摘要
为解决传统检测方法阈值设置困难、对电能质量影响大的问题,提出一种基于电阻变化率和有功功率扰动相结合的混合孤岛检测方法。电阻变化率作为被动方法,该特征量在孤岛后可快速响应,有功功率扰动模块仅在被动方法怀疑孤岛时开启,自适应注入能使公共耦合点电压越限的最小有功功率。仿真结果表明,该方法可快速正确地检测出孤岛,即便在非孤岛情况下也不会发生误判。
In order to solve the problem that the traditional detection method is difficult to set the threshold and has great influence on power quality,a hybrid islanding detection method based on the combination of resistance change rate and active power disturbance is proposed.As a passive method,the resistance change rate can respond quickly after islanding,and the active power disturbance module is turned on only when the passive method suspects islanding,and the minimum active power that can make the voltage of the common coupling point exceed the limit is injected adaptively.The simulation results show that this method can quickly and correctly detect the islanding effect,and there will be no misjudgment even in the case of non-islanding.
作者
高淑萍
郭芳宾
邵美阳
韩寅峰
Gao Shuping;Guo Fangbin;Shao Meiyang;Han Yinfeng(College of Electrical and Control Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Xi’an Key Laboratory of Electrical Equipment Condition Monitoring and Power Supply Security,Xi’an 710054,China;State Grid Shaanxi Electric Power Research Institute,Xi’an 710100,China;Ningbo Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Ningbo 315016,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2024年第5期324-332,共9页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51777166)
国家自然科学基金国际合作与交流项目(52061635105)
国家电网有限公司总部科技项目(52094020006U)。
关键词
分布式发电
故障检测
电能质量
混合孤岛检测方法
有功功率扰动
distributed power generation
fault detection
power quality
hybrid islanding detection method
active power disturbance
