文档介绍：第 39 卷第 7 期电力系统保护与控制
2011 年 4 月 1 日 Power System Protection and Control , 2011
郑州 220 kV 电磁环网解环规划研究
白宏坤1,李干生2
(,河南郑州 450052; ,河南郑州 450052)
摘要:随着电网结构的不断加强,220 kV 电网短路电流水平提高较快,必须逐步实施解环以降低 220 kV 电网短路电流水平,
但在电网解环过程中往往会与一些规划的电网项目存在矛盾。阐述了电磁环网解环基本原则及主要解环方式,并以郑州 500
kV/220 kV电磁解环网为例,根据其现状及远景电网规划,对其逐步实施解环方案并同时校验了郑州电网远期规划的合理性。
提出的通过电网解环规划研究来校验电网规划的合理性的理念,一方面可将电网规划与解环规划合理统一以指导电网的发
展,另一方面也可避免不必要的电网建设从而节省投资。
关键词: 电网规划;电网结构;短路电流;解环运行;500/220 kV 电磁环网
Study on open-loop planning of 220 kV ic ring in Zhengzhou
BAI Hong-kun1,LI Gan-sheng2
(1. Electric Power of Henan, Zhengzhou 450052,China;
2. Henan Electric Power Survey & Design Institute,Zhengzhou 450052,China)
Abstract: The 220 kV work short-circuit current level enhances quickly along with unceasing enhancement of
work structure, open-loop operation mode must be carried out gradually to lower the 220 kV work
short-circuit current level. But in the process of work open-loop it often contradicts with some planned work
projects. This paper describes the fundamental principles as well as the main method of open-loop. Taking Zhengzhou 500 kV/220
kV ic ring for example, in accordance with its present situation and long-work planning, open-loop operation is
progressively implemented and the rationality of Zhengzhou long-work plan has been simultaneously verfied. This pa