摘要
电网中的谐波危害十分严重,随着网络结构日趋复杂化,因谐振造成的谐波污染问题变得更加突出。为了更好地研究分析电网谐振规律,提出一种基于奇异值分解理论的谐波放大分析方法。该方法通过提取谐波源与响应之间传递函数矩阵中的关键信息,获取网络中节点电压和支路电流的谐波放大规律。理论分析和算例分析结果验证了所提出的谐波放大分析方法的有效性。
Harmonics cause serious harm to the power grid. As the network structure becomes more complex, problems of harmonic pollution brought about by resonance have been increasingly highlighted. In order to gain an insight into the resonance in the network, this paper presents an analytic method of harmonic amplification based on the singular value decomposition theory. The main information on the transfer function matrix between harmonic excitations and responses is extracted, which can be used to investigate the characteristics of the node voltage and branch current harmonic amplification in the grid. The theoretical analysis and the results of case studies have verified the effectiveness of the proposed method.
作者
李杨
程莹
刘洋
帅智康
LI gang CHENG ging LIU Wang SHUAI Zhikang(College of Electrical and Information Engineering, Hunan University, Changsha 410082, China Maintenance Company of State Grid Hunan Electric Power Corporation, Changsha 410007, China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2017年第8期16-21,共6页
Automation of Electric Power Systems
基金
国家自然科学基金优秀青年基金资助项目(51622702)~~
关键词
谐振
谐波放大
奇异值分解
传递函数矩阵
resonance
harmonic amplification
singular value decomposition
transfer function matrix
