摘要
分布式电源集成化接入到公共电网中,给系统带来扰动和噪声,使基于谐波电压波动的孤岛检测方法准确性下降,同时传统谐波电压孤岛检测在提取相应特征谐波电压的幅值和相位较为困难。因此提出基于特征谐波混沌振子检测系统相结合的孤岛检测方法,把公共连接点(PCC点)的电压作为外驱动力加到混沌振子系统中,通过混沌振子系统相轨迹图的改变,就可以检测系统的运行状态。MATLAB仿真结果表明,方法具有较高的准确度和快速性。
Integrated access of distributed power source to the public power grid would bring disturbance and noise to the system,thus reducing the accuracy of the island detection method based on harmonic voltage fluctuation.In the meanwhile,it is quite difficult to extract the amplitude and phase of corresponding characteristic harmonic voltage in traditional harmonic voltage island detection.Therefore,an island detection method was proposed,based on the combination of characteristic harmonics and the chaotic oscillator detection system.The voltage at PCC point was applied as an external driving force to the Duffing oscillator system.The operating status of the inspection system could be detected by tracking changes of the phase trajectory of the Duffing oscillator system.MATLAB simulation results indicated that the proposed approach could achieve quite high accuracy and rapidity.
作者
杨擎宇
薛太林
张昊杰
Yang Qingyu;Xue Tailin;Zhang Haojie(Department of Electrical Engineering, Shanxi University, Taiyuan Shanxi 030000, China)
出处
《电气自动化》
2021年第2期77-80,共4页
Electrical Automation
关键词
孤岛检测
双特征谐波
混沌振子检测系统
相轨迹图
island detection
by-characteristic harmonics
Duffing oscillator detection system
phase trajectory
作者简介
杨擎宇(1993—),男,山西人,研究生,研究方向为电气工程。
