基于广义节点的配电网集中式差动保护方法研究
面对配电网供电需求的增大、连接复杂度的增高以及可再生能源接入等问题,研究和发展智能配电网保护控制成为电力系统发展的必然选择和趋势。提出基于广义节点的配电网集中式差动保护方法,根据电网实时结构和测量可用性变化情况,应用广义节点的概念,确定差动保护的最小差动区间,即一个由保护终端构成的、封闭的合围若干电气元件的最小集合。基于广义基尔霍夫定律建立了数学模型,给出了计算方法,通过算例分析验证了该算法的可行性,可以解决分布式电源接入以及出现部分环网情况下配电网的保护问题。...
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Published in | 电力系统保护与控制 Vol. 41; no. 11; pp. 111 - 116 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
许继电气股份有限公司,河南 许昌 461000%国家电网公司物资部,北京 100031%哈尔滨工业大学电气工程系, 黑龙江 哈尔滨 150001
2013
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Subjects | |
Online Access | Get full text |
ISSN | 1674-3415 |
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Summary: | 面对配电网供电需求的增大、连接复杂度的增高以及可再生能源接入等问题,研究和发展智能配电网保护控制成为电力系统发展的必然选择和趋势。提出基于广义节点的配电网集中式差动保护方法,根据电网实时结构和测量可用性变化情况,应用广义节点的概念,确定差动保护的最小差动区间,即一个由保护终端构成的、封闭的合围若干电气元件的最小集合。基于广义基尔霍夫定律建立了数学模型,给出了计算方法,通过算例分析验证了该算法的可行性,可以解决分布式电源接入以及出现部分环网情况下配电网的保护问题。 |
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Bibliography: | ZHANG Xiang-an, TAN Qian, LIU Xing, ZHOU Su-quan, FENG Wei-ming (1. XJ Electric Co., Ltd, Xuchang 461000, China; 2. Supplies Management Department, State Grid Corporation of China, Beijing 100031, China; 3. Dept of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China) 41-1401/TM intelligent distribution network; network protection; differential protection; generalized Kirchhoffs law The research and development of protection control in intelligent distribution network become the inevitable outcome and the development trend of electric power system with the increase of demand in power supply demand, increased strength of connection complexity and access of renewable energy access. This paper puts forward the method of distribution network centralized differential protection based on the concept of generalized node in distribution network. It applies the concept of generalized node to determine the minimum differential interval of differential protection, namely the minimum set of electrica |
ISSN: | 1674-3415 |