• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2015, Vol. 36 ›› Issue (8): 95-101.doi: 10.3969/j.issn.1000-7229.2015.08.016

• 输配电技术 • 上一篇    下一篇

基于N-1准则的中压配电线转供能力实用测算分析

朱雪飞1,周长城1,杨建华1,黄磊2,张杰超2,王志勇2   

  1. 1. 中国农业大学信息与电气工程学院,北京市 100083;2. 国网北京市电力公司,北京市 100031
  • 出版日期:2015-08-01
  • 作者简介:朱雪飞(1992),男,硕士研究生,研究方向为配电网规划与可靠性分析; 周长城(1993),男,硕士研究生,研究方向为配电网规划与分布式电源技术; 杨建华(1963),男,教授,本文通信作者,主要研究方向为电力系统规划与仿真、新能源发电技术、智能微电网等; 黄磊(1974),男,高级工程师,研究方向为配电网规划、运行与自动化技术; 张杰超(1981),男,工程师,研究方向为配电网规划与营销; 王志勇(1979),男,高级工程师,研究方向为配电网自动化技术。

Practical Calculation and Analysis of Load Transfer Ability of Medium Voltage Distribution Lines Based on N-1 Security Criterion

ZHU Xuefei1, ZHOU Changcheng1, YANG Jianhua1, HUANG Lei2, ZHANG Jiechao2, WANG Zhiyong2   

  1. 1. College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; 2. State Grid Beijing Electric Power Company, Beijing 100031, China
  • Online:2015-08-01

摘要:

为了确定配电网中压馈线之间的负荷转供情况,结合线路的最大负荷电流、允许载流量和多种约束条件,提出了基于“N-1”准则的负荷转供实用测算和分析方法。在了解馈线联络情况的基础上,确定由单馈线或多馈线承担负荷转供的可能性;在满足多种约束条件下,计算、分析并获得馈线首端故障后的转供负荷容量和多种转供方案。通过对变电站各回馈线转供数据进行汇总,可以得出变电站不同故障情况下的负荷损失率。经过实际配电网转供的工程应用,验证了测算分析方法的实用性和有效性。

关键词: 配电网, 中压, N-1准则, 负荷转供, 对端载流量, 负荷损失率

Abstract:

To determine the load transfer between medium voltage feeders in distribution network, combining with the maximum load current and allowable peer ampacity of the lines and some constraints, a practical method is proposed to calculate and analyze the load transfer based on N-1 security criterion. On the basis of understanding the basic connection relation between the feeders, the possibility of the load transfer is determined, which might be supported by a single feeder or multiple feeders. The transfer capacity and the transfer solution schemes to meet the constraints could be calculated, analyzed and obtained when a feeder starting terminal was in failure. The load loss rate under different fault conditions of one single substation could be obtained by summarizing all the transfer information of the lines from the substation. The practicability and the effectiveness of the method have been verified through the practical engineering application in a real distribution network.

Key words: distribution network, medium voltage, N-1 security criterion, load transfer, peer ampacity, load loss rate

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