| 大电源接入方式对短路电流的影响分析 |
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| 引用本文： | 周吉安,靳丹,王维洲,但扬清,刘文颖. 大电源接入方式对短路电流的影响分析[J]. 电工电能新技术, 2012, 31(1): 48-51 |
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| 作者姓名： | 周吉安 靳丹 王维洲 但扬清 刘文颖 |
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| 作者单位： | 1. 甘肃省电力公司,甘肃兰州,730050
2. 华北电力大学电气与电子工程学院,北京,102206 |
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| 摘 要： | 本文针对大容量电源接入电网造成短路电流升高的问题,根据对称短路电流计算公式,对大电源不同接入方式的短路电流升高影响进行了分析,提出了有效限制短路电流的大电源接入点选择原则,给实际电源规划建设提供借鉴.通过实例仿真,验证了将大电源接入高电压等级和在电源电流贡献系数较小的节点接入大电源可限制短路电流升高的有效性.
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| 关 键 词： | 大容量电源 对称短路 大电源接入方式 限制短路电流 |
Analysis of influence of huge power supplies grid-connection modes on short-circuit current |
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| ZHOU Ji-an , JIN Dan , WANG Wei-zhou , DAN Yang-qing , LIU Wen-ying. Analysis of influence of huge power supplies grid-connection modes on short-circuit current[J]. Advanced Technology of Electrical Engineering and Energy, 2012, 31(1): 48-51 |
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| Authors: | ZHOU Ji-an JIN Dan WANG Wei-zhou DAN Yang-qing LIU Wen-ying |
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| Affiliation: | 1.Gansu Provincial Electric Power Company,Lanzhou 730050,China; 2.Electrical & Electronic Engineering School of North China Electric Power University,Beijing 102206,China) |
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| Abstract: | In view of the problem that huge power supplies grid-connection causing the increase of short-circuit current,different short-circuit current increasing under different huge power supplies grid-connection modes is analyzed according to symmetrical short-circuit current calculation formula.The selection principle of huge power supplies grid-connection modes which can effectively limit short-circuit current is put forward and it can be referred in the actual planning and construction of power grid.The validities of modes that huge power supplies connected to high-voltage bus and nodes with little current contribution coefficient are indicated by the simulation instance. |
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| Keywords: | huge power supplies symmetrical short circuit fault huge power supplies grid-connection modes limiting short-circuit current |
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