基于改进型i_p-i_q法的配电静止同步补偿器  

An Improved i_p-i_q Detecting Method Based on D-STATCOM

作　　者：王辉云 常鲜戎[2] 韩博[3] 

机构地区：[1]国网济南电力公司,山东济南250012 [2]电力系统保护与动态安全监控教育部重点实验室(华北电力大学),河北保定071003 [3]华北电力大学数理学院,河北保定071003

出　　处：《陕西电力》2014年第4期37-40,共4页Shanxi Electric Power

基　　金：中央高校基本科研业务费专项资金资助(12MS145);河北省自然科学基金(E2011502097)

摘　　要：快速、准确的补偿指令电流检测方法是提高配电静止同步补偿器(D-STATCOM)补偿性能的重要环节。在瞬时无功功率理论基础上,提出一种改进型i_p-i_q检测法,该方法利用基波正序电压提取模块代替传统i_p-i_q检测法中的电压检测电路,通过对线电压进行三角函数变换获得基波正序电压的相位,从而在三相电网电压不对称和畸变时仍能准确提取补偿指令电流。仿真和实验结果表明,基于改进型i_p-i_q检测法的D-STATCOM能准确获得补偿指令电流,可对谐波和无功进行有效补偿,证明了所提方法的有效性。Accurate and rapid detecting method of reference compensation current is important to improve the performance of distribution static synchronous compensator（D-STATCOM）.Based on the instantaneous reactive power theory,an improved ip-iq detecting method is proposed.The improved method substitutes the voltage detecting circuit of the traditional ip-iq detecting method.Througth line voltage pretreatment,the fundamental positive sequence voltage is separated,and then the reference compensation current can be calculated even if the source voltages are severely distorted and imbalanced.Results obtained by simulations and experiments show that the D-STATCOM based on the proposed method can obtain reference compensation current precisely and harmonic and reactive currents are compensated effectively,which proves the validity of the proposed method.

关 键 词：配电静止同步补偿器 i_P-i_q检测法 补偿指令电流 

分 类 号：TM761[电气工程—电力系统及自动化]