基于功率预估和阻抗校正法的主导谐波源追踪  

Dominant Harmonic Source Tracing Based on Power Forecast and Impedance Correction Method

作　　者：李瑞 谢乔富 崔荧菳 朱伟杰 袁愿 许磊[3] 华回春[3] 

机构地区：[1]云南电网有限责任公司曲靖供电局,云南曲靖655000 [2]厦门红相电力设备股份有限公司,福建厦门361001 [3]新能源电力系统国家重点实验室(华北电力大学),河北保定071003

出　　处：《广东电力》2017年第6期73-79,共7页Guangdong Electric Power

基　　金：国家自然科学青年基金资助(51507064);中国南方电网有限责任公司科技项目(050200 KK52150003);教育部中央高校基本科研业务费专项资金资助项目(2016MS91)

摘　　要：主导谐波源追踪是解决谐波争端的首要任务。传统的有功功率方向法适合电能质量监测系统应用,可是在理论上被证明是错误的;与有功功率方向法不同,阻抗法在理论上是完全正确,可是只讨论录波数据下的使用,而未涉及电能质量监测系统数据条件下的使用。针对以上2种方法所存在的种种弊端,提出了一种基于基于功率预估和阻抗校正的主导谐波源追踪新方法——在预估功率的前提下得到谐波电压、电流和相位差的信息,采用双主导波动量来计算端口等效谐波阻抗。实际算例表明新方法不同于存在误判的有功功率法和传统阻抗法,它能够给出完全正确的结论,且实现简单。The dominant harmonic tracing is the primary task to solve the problem of harmonic disputes. Traditional active power direction method is suitable for application of power quality monitoring system but it is proved to be wrong in theory. Different from the active power direction method, the impedance method is absolutely correct in theory but it only discusses use of the method of recording data while doesn＇t involve use under the condition of power quality monitoring system data. In allusion to shortcomings of the above two methods, this paper presents a kind of new method for the dominant harmonic tracing based on power forecast and impedance correction which is to get information of harmonic voltage, current and phase difference on the premise of forecasting power and adopt double dominant fluctuation quantity to calculate equivalent harmonic impedance at the port. Actual example indicates that different from the active power direction method and traditional impedance method, the new method can provide absolutely correct conclusion and is simple to be realized.

关 键 词：电能质量 主导谐波源 电能质量监测系统 有功功率法 阻抗法 

分 类 号：TM712[电气工程—电力系统及自动化]