背景谐波电压影响公共连接点谐波电流的研究  

Study on Harmonic Current Effected by Background Harmonic Voltages at Point of Common Coupling

作　　者：孙晓武[1] 施火泉[1] 

机构地区：[1]江南大学通信与控制工程学院,江苏无锡214122

出　　处：《电气传动》2010年第6期38-42,共5页Electric Drive

摘　　要：用户装设交流滤波装置后,背景谐波电压也会影响用户公共连接点(简称PCC)谐波电流。首先建立这类供电系统简化模型,结合各种工况的谐波潮流分析,研究PCC谐波电压和谐波电流的实质、背景谐波电压的影响,并提出用户PCC实际注入系统的谐波电流的工程计算方法。通过典型工程实例各种工况下测试结果,分析验证背景谐波电压对用户PCC谐波电流的影响。理论分析和实践结果表明分析方法的有效性和可行性,在工程应用中可分析、解决相关问题。After the user installed AC filters,harmonic current at point of common coupling（PCC） may be affected by background harmonic voltages.A simplified model was established for the power supply system.Through the harmonic power flow analysis of working conditions,the essence of harmonic voltages and current at PCC and the effection of background harmonic voltage were studied,a method was proposed for calculating the actual harmonic current injection system at PCC.Through the analysis on testing result of typical project cases vertify the casue of them.The feasibility and the validity of analysis method is testified by both theoretic analysis and practice results,analysis model may analysis and resolve related issues in engineering.

关 键 词：背景谐波电压 谐波电流 公共连接点 电网 谐波限值 

分 类 号：TM711[电气工程—电力系统及自动化]