摘要
本文立足国家标准《电能质量公用电网谐波》,针对配电网谐波电流限值计算与评估中存在的一些问题进行了探讨。考虑谐波电流限值分配关键参数,分析单个用户接入电网公共连接点的确定对系统阻抗的影响,提出公共连接点短路容量计算的若干方法。在此基础之上,基于工程实际案例分析背景谐波电压引起的谐波电流问题以及非线性负荷的谐波电流放大问题,为电能质量的限值计算与评估提供参考。
Based on the national standard network, some concrete problems about the Quality of electric energy supply-Harmonics in public supply evaluation and limit calculation of harmonic current existed in distribution power system are studied in this paper. Considering the key parameters of the distribution of harmonic current,the impact of the determination of common connection point of single user access network on system impedance are analyzed,several methods of the short circuit capacity calculation of point of common connection point are provided. Based on the practical engineering cases, the connection of background harmonic voltage and harmonic circuit and the harmonic current amplification of nonlinear load are studied. The above contents provide a reference for the limit calculation and assessment of power quality.
出处
《电力电容器与无功补偿》
北大核心
2016年第6期7-11,16,共6页
Power Capacitor & Reactive Power Compensation
关键词
电能质量
谐波电流
限值计算
评估
power quality
harmonic current
limit value calculation
evaluation
