余运俊,衷国瑛,范瑞祥,朱建勇,纪清照.滑膜频率偏移法和过/欠频被动法结合的混合孤岛检测法[J].电子测量与仪器学报,2017,31(2):224-229
滑膜频率偏移法和过/欠频被动法结合的混合孤岛检测法
Mixed islanding detection method based on slide mode frequency and OFP/UFP islanding detection method
  
DOI:10.13382/j.jemi.2017.02.009
中文关键词:  过/欠频被动法  滑膜频率偏移法  检测盲区  电能质量
英文关键词:OFP/UFP  SMS  NDZ  power quality
基金项目:国家自然科学基金(61563034);国家国际科技合作专项(2014DFG72240)、江西省自然科学基金(20151BAB206051)、江西省科技支撑计划(2013BBE50102)、南昌大学研究生创新专项(cx2016257)资助
作者单位
余运俊 1. 南昌大学信息工程学院南昌330031;2. 国网江西省电力科学研究院南昌330096 
衷国瑛 南昌大学信息工程学院南昌330031 
范瑞祥 国网江西省电力科学研究院南昌330096 
朱建勇 华东交通大学电气工程学院南昌330096 
纪清照 国网江西省电力科学研究院南昌330096 
AuthorInstitution
Yu Yunjun 1. School of Information Engineering, Nanchang University, Nanchang 330031, China; 2. Jiangxi Electric Power Science Research Institute, Nanchang 330096, China 
Zhong Guoying School of Information Engineering, Nanchang University, Nanchang 330031, China 
Fan Ruixiang Jiangxi Electric Power Science Research Institute, Nanchang 330096, China 
Zhu Jianyong Electrical Engineering College, Huadong Jiaotong University, Nanchang 330096, China 
Ji Qingzhao Jiangxi Electric Power Science Research Institute, Nanchang 330096, China 
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中文摘要:
      孤岛检测是光伏并网系统安全运行的一个重要保证。目前对过/欠频被动法和滑膜频率偏移法的改进研究很多,但没有改善负载消耗功率和逆变输出功率匹配度高时,过/欠频法检测盲区大的缺点,没有改善滑膜频率偏移法对电能质量影响大的缺点。基于此,提出一种基于滑膜频率偏移法和过/欠频被动法结合的混合孤岛检测法。这种算法能够对上述孤岛检测方法的缺点做出改进,能够避免系统突变因素造成断开逆变输出的误动作,能够实时跟踪负载的变化切换不同的算法。在MATLAB\simulink和光伏微网实验系统中进行孤岛检测实验,实验结果证明了理论分析的正确性。
英文摘要:
      Islanding detection is an important guarantee for the safe operation of photovoltaic grid connected system. At present, there are a lot of improvement researches on slide mode frequency(SMS) and OFP/UFP islanding detection method(IDM), but the disadvantage of large non detection zone (NDZ) of OFP/UFP is not changed when the matching degree of load consumption power and inverter output power is high, the disadvantage of large influence to power quality of SMS is not changed. A mixed islanding detection method based on SMS and OFP/UFP is proposed. The NDZ of OFP/UFP and the influence to power quality of SMS is decreased. The malfunction of the system which is caused by the abrupt change of the system was avoided. It can switch different IDM algorithms when the load is changed. Islanding detection experiment is carried out in MATLAB\Simulink and photovoltaic micro grid experiment system. The experimental result verifies the correctness of theoretical analysis.
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