考虑分布式电源的配电台区电压质量评估方法研究  

Research on Voltage Quality Evaluation Method for Distribution Station Area Considering Distributed Power

作　　者：葛华锋 GE Huafeng(Suzhou Power Supply Company,Suzhou 215000)

机构地区：[1]国网江苏省电力有限公司苏州供电分公司,江苏苏州215000

出　　处：《电力安全技术》2024年第10期25-30,共6页Electric Safety Technology

摘　　要：以考虑分布式电源和非线性负荷的低压配电台区为例,分别采用经验模态分解、集合经验模态分解和固有时间尺度分解三种信号分解技术对台区的电压质量指标进行分析对比,并对电压暂降和非线性负荷投入的电能质量事件进行识别、分类以及分类准确性对比。结果表明,三种信号分解技术均能明确表征不同电能质量事件的发生,且分解后的模态特征均具有很高的分类准确率,相比较而言,固有时间尺度分解具有更高的分类准确率。Taking a low-voltage distribution station area considering distributed power and nonlinear load as an example,three sign decomposition techniques including empirical mode decomposition,ensemble empirical mode decomposition and intrinsic time decomposition(ITD)are used to analyze and compare the voltage quality of the station area,and the power quality events including voltage sag and nonlinear load input are identified and classified,while comparison is carried out on its classification accuracy.The results show that the three signal decomposition techniques are available to represent the occurrence of various power quality events,and the decomposed modal features are of high classification accuracy.Compared with the other two techniques,intrinsic time decomposition features higher classification accuracy.

关 键 词：低压配电台区 分布式电源 非线性负荷 电压质量 信号分解技术 

分 类 号：TM712[电气工程—电力系统及自动化]