摘要
随着西北750kV电网的建成投运,原有330kV网架将与新出现的750kV线路形成电磁环网。文中研究了2008年底西北750kV骨干网架初步形成后,750/330kV电磁环网运行方式对系统安全稳定性的影响。静态安全分析和稳定计算结果表明,在未形成坚强的750kV网架结构前,合环运行比解环方式更有利于提高西北电网输送能力和稳定水平。针对合环运行可能出现的系统振荡、输送受限等问题,提出通过加强安稳装置配置、研制遮断容量更大的断路器、优化运行方式和网架结构等措施来保证系统的稳定运行。
Along with the completion and put into service of 750 kV Northwest China power grid, the original 330 kV network will electro-magnetically coupled with the newly built 750 kV power grid, The authors research the influence of operation modes of electro-magnetically coupled 750/330 kV power grid on system security and stability when Northwest China 750 kV main network is preliminarily completed at the end of 2008. The results of static security and stability analysis show that before a strong 750 kV network is built up, the operation mode of electro-magnetically coupled power grid, i,e., the close-loop operation mode, is available to enhance the transmission capacity and stability level of Northwest China power grid than open loop operation mode. For the potential problems such as system oscillation and restricted power transmission that may occur under close-loop operation, some suggestions are put forward, including reinforcing the configuration of security and stability control devices, developing circuit breakers with higher interrupting capacity, optimizing operating modes and network structure, etc., to ensure stable operation of Northwest China power grid.
出处
《电网技术》
EI
CSCD
北大核心
2007年第15期33-38,共6页
Power System Technology
基金
西北电网有限公司"十一五"科技计划资助项目(06-DD06)。
关键词
西北750KV电网
运行方式
电磁环网
输送极限
潮流
750 kV Northwest China power grid
operation mode
electro-magnetically coupled power loop
transmission limit
power flow
作者简介
潘炜（1973-），男，博士研究生，研究方向为电力系统分析与控制，E—mail：partway2007@163．com
刘文颖（1955-），女，教授，从事电力系统分析与控制及电力系统智能调度研究工作
史可琴（1963-），女，高级工程师，从事电网生产调度工作
范越（1970-），男，高级工程师，从事电网生产调度工作。
