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本文介绍了ANAPF有源滤波装置的工作原理、方案、技术参数以及产品特点,结合在江苏某知名纺织企业低压配电系统中的应用案列,说明了有源滤波装置在低压配电系统中对改善供电电能质量、治理谐波起到了至关重要的作用
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<P align=right>徐霜</P> <P align=right>安科瑞电气股份有限公司</P> <P> <STRONG>摘要:</STRONG>本文介绍了ANAPF有源滤波装置的工作原理、方案、技术参数以及产品特点,结合在江苏某知名纺织企业低压配电系统中的应用案列,说明了有源滤波装置在低压配电系统中对改善供电电能质量、治理谐波起到了至关重要的作用。</P> <P> <STRONG>引言 </STRONG></P> <P> 随着电力电子变流装置的应用日益广泛,电能得到了更加充分的利用。但非线性电力装置设备的广泛应用产生了大量畸变的电流谐波,畸变电流在电网中的流动导致了谐波电压;谐波污染越来越多地威胁到电力系统安全、稳定、经济运行,给同一网络的线性负载和其它用户带来了极大影响。谐波已与电磁干扰、功率因数降低并列为电力系统的三大公害。所以了解谐波产生的原理、研究消除供配电系统中的高次谐波问题对改善供电质量和确保电力系统安全经济运行有着非常积极的意义。谐波测量是谐波问题中的一个重要分支,对抑制谐波、解决谐波产生的问题有着重要的指导作用。因此对谐波的测量和分析是电力系统分析和控制中的一项重要工作,是继电保护、故障测量等工作开展的重要前提。</P> <P> <STRONG>1.工作原理</STRONG></P> <P> ANAPF系列有源电力滤波装置并联在含谐波负载的低压配电系统中,能够对动态变化的谐波电流进行快速实时的跟踪和补偿。其原理为:ANAPF系列有源电力滤波器通过CT采集系统谐波电流,经控制器快速计算并提取各次谐波电流的含量,产生谐波电流指令,通过功率执行器件产生与谐波电流幅值相等方向相反的补偿电流,并注入电力系统中,从而抵消非线性负载所产生的谐波电流。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none; TEXT-ALIGN: center"><FONT style="FONT-SIZE: 14px"><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 447px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 196px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%872(53).png"><BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> </FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none; TEXT-ALIGN: center"><FONT style="FONT-SIZE: 14px">ANAPF有源电力滤波器原理图</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> <FONT style="FONT-SIZE: 14px"> </FONT></FONT><FONT style="FONT-SIZE: 14px"><STRONG>2.APF产品技术参数<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"></STRONG> </FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> ANAPF有源电力滤波器技术参数</FONT></P> <TABLE style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 528px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" align=center border=1> <TBODY style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">接线方式</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">三相三线或三相四线</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">接入电压</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">3×380±10%</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">接入频率</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">50Hz±2%</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">瞬态响应时间</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">100μs</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">开关频率</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">10kHz-20kHz</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">功能设置</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">只补偿谐波、只补偿无功、既补偿谐波又补偿无功</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">谐波补偿次数</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">2-31次</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">保护类型</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">直流过压保护、IGBT过流保护、装置过温保护</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">冷却方式</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">强制风冷</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">噪音</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"><65dB(处于柜内并运作于额定状态)</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 工作环境温度</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">-10℃~+45℃(环境温度超过工作温度范围降容使用)</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">工作环境湿度</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"><85%RH不凝结</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">安装场合</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">室内安装</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">海拔高度</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">≤1000M(更高海拔需降容使用)</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">进出线方式</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">根据客户要求</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">防护等级</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">IP30</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">智能通信接口</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">RS485/MODBUS-RTU</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">远程监控</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">可选</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">安装方式</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 163px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">立柜式</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 125px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">壁挂式</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 116px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">抽屉式</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">补偿电流大小(A)</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 163px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">50、100、150</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">200、250、300</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 125px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">30、50</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 116px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">30、50</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 124px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">柜体颜色</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 404px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" colSpan=3> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">RAL7035</FONT></P></TD></TR></TBODY></TABLE> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 有源滤波装置三种安装方式中,壁挂式和抽屉式是立柜式的经济型方案,为用户大大节约了成本。单个模块容量最大为50A,可单独使用。也可选用多个50A模块形成大电流补偿装置。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> </FONT><FONT style="FONT-SIZE: 14px"><STRONG>3.方案设计<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"></STRONG> 针对江苏某知名纺织企业项目的谐波,相关技术人员对容量2500KVA的1#变压器出线侧进行了详细测量。主要谐波频次为5次、7次、11次是典型的6n±1谐波。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 测量示意图:(黑圈为测量点)</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 492px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 201px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%873(39).png"></FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> </FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 根据测量后的电能质量分析和具体测量数据,结合谐波计算公式(1)(2)(3),可以估算谐波电流大小。{$page$}</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 104px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 24px" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%871(90).png"> …………………………………………………(1)</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 147px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 30px" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%872(55).png">………………………………………(2)</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 101px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 24px" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%873(41).png"> ……………………………………(3)</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">(<IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 19px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 26px" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%874(29).png">谐波总电流<IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 30px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 24px" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%875(24).png">基波电流有效值<IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 26px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 24px" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%876(25).png">全波电流有效值<IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 37px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 24px" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%877(21).png">总谐波电流畸变率)</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">由以上公式计算,可计算得1#变压器出线柜的谐波电流,如表所示。 </FONT></P> <TABLE style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 568px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none" border=1> <TBODY style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 193px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">测量点</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 105px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">电流Irms(A)</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 129px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">THDi</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 142px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">谐波电流In(A)</FONT></P></TD></TR> <TR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 193px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">1#变压器出线柜</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 105px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">3065.1 </FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 129px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">11.96%</FONT></P></TD> <TD style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 142px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px">366.59</FONT></P></TD></TR></TBODY></TABLE> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 谐波治理时考虑到要将谐波滤波干净,谐波滤波器选型时要比实际电流大一些,确定对1#变压器变频器出线配置2台ANAPF200-380/BGL的有源滤波装置进行集中治理。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> <STRONG>4.产品设计</STRONG></FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 4.1电气设计<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> ANAPF200-380/BGL有源滤波装置由4个50A抽屉板载模块构成,总进线配一个塑壳断路器,原理如下图所示:</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none; TEXT-ALIGN: center"><FONT style="FONT-SIZE: 14px"><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 398px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 157px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%874(27).png"></FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> <STRONG>4.1.1抽屉板载模块的设计</STRONG><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; FLOAT: right; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 254px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 191px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%875(22).png"><BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 外形尺寸485×610×275 (宽*深*高)<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 额定电流:50A<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 额定电压:AC380V<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 接线方式:三相四线<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 进线方式:后进后出<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 额定频率:50Hz<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 模块壳体颜色:RAL9004<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 防护等级:IP20<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 质量:50KG <BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <STRONG>4.2柜体结构设计<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"></STRONG> 如下图,柜体尺寸为1000*2200*800(宽高深),柜体颜色是RAL7035,GGD柜型,镀锌板材质,安装方式是与配电柜拼柜,柜体设计本着与其它低压柜协调一致的原则。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none; TEXT-ALIGN: center"><FONT style="FONT-SIZE: 14px"><IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 554px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 284px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%876(23).png"></FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> <STRONG>5.产品特点<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"></STRONG> ●模块化设计,成本低,性能提高,体积小,安装便利,便于后期维护及扩容;<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> ●DSP+FPGA全数字控制方式,具有极快的响应时间,先进的主电路拓扑和控制算法,精度更高、运行更稳定;<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> ●一机多能,即可补谐波,又可兼补无功,可对2-31次谐波进行全补偿或指定特定次谐波进行补偿;<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> ●具有完善的桥臂过流保护、直流过压保护、装置过温保护功能;<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> ●每个模块采用彩色触摸屏以实现参数设置和控制,使用方便,易于操作和维护;<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> ●输出端加装滤波装置,降低高频纹波对电力系统的影响;</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <FONT style="FONT-SIZE: 14px"><STRONG>6.应用案例<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"></STRONG> 6.1项目概况及要求<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 江苏某知名纺织企业现场使用变频器等负载,产生大量谐波,导致电容柜的电容器损坏,从而使实际功率因数降低,由于功率因数达不到国家规定标准0.9的要求,供电部门采取了对该公司进行经济上的处罚,严重影响公司正常运营。<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 6.2谐波治理效果</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> <IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 227px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 172px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%877(19).png"> <IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 218px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 166px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%878(14).png"><BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 图1 投入使用前电流波形 图2投入使用前电流频谱<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 从图1、图2可以看出电流波形即是典型的三相整流桥非线性负载的波形,图2中反映出变频器的电流谐波总畸变率为11.96%,5次谐波电流是331.6 A,7次谐波电流是89.8A,除此之外还有11次,12次电流谐波,其他次数谐波较小可忽略。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> <IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 221px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 173px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%879(11).png"> <IMG style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0px; BORDER-TOP: medium none; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: medium none; WIDTH: 224px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; BORDER-BOTTOM: medium none; LIST-STYLE-TYPE: none; HEIGHT: 170px" alt="" src="http://net.acrel.cn/ckfinder/userfiles/images/%e5%9b%be%e7%89%8710(7).png"><BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 图3投入使用后电流波形 图4 投入使用后电流频谱 <BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> 投入有源电力滤波器后,变频器电网供电的波形及谐波含量均发生了变化,从图3可以看出电流波形已变得接近正弦波,图4中反映出变频器的总输入电流总畸变率减少到4.8%,5次谐波电流从原来的331.6A变为92.2A,7次谐波电流从原来的89.8A变为13.8A,其他次数的谐波同样得到了消除。有源电力滤波器的应用为企业消除电网污染、节能降耗带来了新的亮点。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> <STRONG>7.结束语<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"></STRONG> 该项目所选用的有源滤波柜是最新模块化设计方案,体积小,成本低,安装便利,便于以后维护及扩容;使用方便,易于操作;有源滤波装置节约了用户投资成本,缩短了工期,为低压配电网的谐波治理工程提供了高效的补偿装置,具有良好的应用价值和应用前景。</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> <FONT style="FONT-SIZE: 14px">【参考资料】<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> [1]安科瑞电能质量监测与治理选型手册。2015.08版<BR style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"> [2]安科瑞电气股份有限公司产品手册.2013.01.版</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"></FONT> </P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 作者简介</FONT></P> <P style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 20px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"><FONT style="FONT-SIZE: 14px"> 徐霜,女,本科。任职单位:现任职于安科瑞电气股份有限公司</FONT></P>