基于电网等值模型的电能质量试验电源研究

吴 楠; 李尚盛; 查晓明

吴楠,李尚盛,查晓明.基于电网等值模型的电能质量试验电源研究[J].电测与仪表,2017,54(19):.
Wu Nan,Li Shangsheng,Zha Xiaoming.Study of power quality testing supply based on equivalent model of power grid[J].Electrical Measurement & Instrumentation,2017,54(19):.

基于电网等值模型的电能质量试验电源研究

Study of power quality testing supply based on equivalent model of power grid

DOI：

中文关键词: 试验电源电能质量模拟相似理论电网等值模型虚拟阻抗

英文关键词:testing supply power quality simulation similarity theory equivalent model of power grid virtual impedance

基金项目:

作者中文名	作者英文名	单位
吴楠	Wu Nan	国网江苏省电力公司电力科学研究院
李尚盛	Li Shangsheng	武汉大学电气工程学院
查晓明	Zha Xiaoming	武汉大学电气工程学院

摘要点击次数: 1441

中文摘要:

为了使电能质量试验电源更好地模拟实际电网的外特性,本文提出了基于电网等值模型的电能质量模拟方法。基于相似理论,进一步提出了相似程度d这一指标用于评价试验电源模拟的电能质量与“原型”的相似性。本文针对H桥级联型逆变器的试验电源拓扑结构,亦提出了基于重复学习控制的电压源虚拟阻抗控制策略,其能对基波情况下实际电网的外特性进行模拟,且可信度较高。最后,通过仿真验证了所提控制策略的有效性以及指标的可行性。

英文摘要:

To better simulate external characteristics of actual grid using power quality testing supply, this paper proposes power quality simulation method based on equivalent model of power grid. In view of similarity theory, similarity degree d is proposed as an index to evaluate the similarity between power quality simulated by testing supply and the prototype. With regard to H-bridge cascaded inverter topology, voltage source virtual impedance control strategy based on repeated study control is also proposed in this paper. It can simulate external characteristics of actual grid in fundamental situation, meanwhile it embraces high credibility. Ultimately, feasibility of proposed control strategy and index is verified by simulation.

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