光伏T接高压配电网电流差动保护研究

TM614; 分析了光伏电站故障电流的特性，研究了两个目前常用电流差动保护判据应用在光伏T接线路上存在的问题。研究结果表明，传统T接线路差动保护判据不能同时满足内部故障的灵敏性和外部故障的可靠性。结合光伏电源故障电流特点，提出了适合于光伏T接线路电流差动保护的综合判据。对改进后的判据进行了大量的仿真试验，仿真结果表明，该判据能满足区内故障时的灵敏性和区外故障时的可靠性，并且具有很强的抗过渡电阻的能力。...

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Bibliographic Details
Published in电力系统保护与控制 Vol. 43; no. 13; pp. 60 - 65
Main Author 王婷 刘渊 李凤婷 贾言争 何世恩 李育强
Format Journal Article
LanguageChinese
Published 新疆大学教育部可再生能源发电与并网控制工程技术研究中心,新疆 乌鲁木齐,830047%新疆大学教育部可再生能源发电与并网控制工程技术研究中心，新疆 乌鲁木齐 830047 2015
国网昌吉供电公司，新疆 昌吉 831100%国网哈密供电公司,新疆 哈密,839000%国家电网甘肃省电力公司风电技术中心,甘肃 兰州,730050
Subjects
T接线路
光伏
电流差动保护：综合判据
current differential protection
电流差动保护
photovoltaic power
综合判据
synthesis criterion
光伏
T-type line
T接线路
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ISSN1674-3415

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Summary:TM614; 分析了光伏电站故障电流的特性，研究了两个目前常用电流差动保护判据应用在光伏T接线路上存在的问题。研究结果表明，传统T接线路差动保护判据不能同时满足内部故障的灵敏性和外部故障的可靠性。结合光伏电源故障电流特点，提出了适合于光伏T接线路电流差动保护的综合判据。对改进后的判据进行了大量的仿真试验，仿真结果表明，该判据能满足区内故障时的灵敏性和区外故障时的可靠性，并且具有很强的抗过渡电阻的能力。
Bibliography:WANG Ting, LIU Yuan, LI Fengting, JIA Yanzheng, HE Shien, LI Yuqiang （1. Engineering Research Center of Education Ministry for Renewable Energy Power Generation and Grid Technology, Xinjiang University, Urumqi 830047, China; 2. State Grid Changji Power Supply Company, Changji 831100, China; 3. State Grid Harni Power Supply Company, Hami 839000, China; 4. Wind Power Technology Center, Gansu Electric Power Corporation, Lanzhou 730050, China）
photovoltaic power; T-type line; current differential protection; synthesis criterion
41-1401/TM
The characteristic of fault current of photovoltaic power is analyzed. Research on the problems that two traditional criterions of current differential protection used in photovoltaic T-type line has done and results show that traditional criterions cannot simultaneously meet the sensitivity and reliability. Combining with the characteristic of fault current of photovoltaic power, a synthesis criterion of current differential protection suitable for photovoltaic T-type line is prop
ISSN:1674-3415