摘要
针对目前有源孤岛检测法检测信道间相互干扰及注入扰动量对电能质量产生影响等不足之处,提出了一种基于阻抗测量原理的孤岛检测方法。介绍了阻抗测量法的检测原理及孤岛判定依据,分析了信号发生器的触发位置、触发角等因素对多分布式电源干扰的影响及抑制,探讨了短路脉冲电流信号对分布式电源出线端电压偏差的影响机理。利用Matlab/Simulink对系统孤岛、并网运行状态进行建模仿真,仿真结果表明利用阻抗测量法进行多信道检测可以显著抑制干扰,降低对电能质量的影响,有效实现孤岛检测。
Aiming at the disadvantages of mutual interference between different detection channels of active detection and the influence on power quality due to the disturbance variable, a novel method based on impedance measurement is proposed for islanding detection. The detecting principle of the impedance measurement and the criterion for island- ing detection were illustrated, and the impacts and inhibition of different trigger local and trigger angle of signal gener- ator on multiple distributed powers were analyzed, and the dynamic mechanism of short impulse current for voltage de- viation of distributed generation terminal was studied. Matlab/Simulink was utilized to set up different detection sys- tems, and the simulation was processed afterward. The numerical illustration indicates that the proposed method is re- markably reliable on detecting islanding conditions, moreover, it can solve the interference problem in the multi-chan- nel detection, and reduce the impact on power quality.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2013年第5期40-44,共5页
Proceedings of the CSU-EPSA
基金
国家自然科学基金项目(71263043)
国家自然科学基金项目(51167015)
宁夏回族自治区高等教育"质量工程"改革项目(2011JG-22)
宁夏自治区自然基金项目(NZ12140)
关键词
孤岛检测
阻抗测量
多源微网
分布式电源
短路电流
islanding detection
impedance measurement
multi-source micro-grid
distributed resource
short cur-rent
作者简介
肖龙（1987-）,男,硕士研究生,研究方向为电力系统保护与控制.Email：xl12006243705@163.com｜
杨国华（1972-）,男,通信作者,硕士,教授,硕士生导师,研究方向为新能源发电技术与微网系统.Email：ghyangchina@126.com｜
周鑫（1988-）,男,硕士研究生,研究方向为新能源发电与微网技术.Email：zhou_xin1988love@163.com
