华中-华北交流同步电网简化等值建模分析  

A Simplified Equivalent Model of Central-North China Power Grid

作　　者：刘巨[1] 孙海顺[1] 刘子全[1] 文劲宇[1] 罗成 

机构地区：[1]强电磁工程与新技术国家重点实验室,华中科技大学,湖北省武汉市430074 [2]中西部电网独立运行公司,美国卡梅尔市46032

出　　处：《电力系统自动化》2014年第6期38-42,90,共6页Automation of Electric Power Systems

基　　金：国家电网公司大电网重大专项资助项目(SGCC-MPLG026-2012);国家自然科学基金资助项目(51177057)~~

摘　　要：为了深入地研究华中—华北交流互联同步电网的运行机理,将华中电网与华北电网简化等值成一个7机48节点系统,该等值系统较好地保留原型系统的联络线潮流静态特性、联络线功率动态特性、大扰动冲击特性和短路电流特性。通过对该等值系统仿真分析,初步证明了仿真中发现的四川区域电网个别母线严重故障导致华中电网与华北电网间交流联络线发生解列的现象属于功角失稳范畴,基于此提出了一种实用的可提高系统稳定性的措施。In order to further study the operation mechanism of the Central-North China AC synchronous power grid, this paper simplified this power grid into a 7-machine 48-node equivalent system. The equivalent system well retains the power flow static characteristics, tie-line power dynamic characteristics, the impact of large disturbance characteristics and short-circuit current characteristics of the original power grid. By the simulation analysis of the equivalent system, this paper preliminarily proves that the system UHV AC line splitting resulting from the serious fault occurring in Sichuan power grid is an angle instability problem. Based on this, a practical measure is proposed to improve the system stability.

关 键 词：联络线 振荡解列 等值建模 功角稳定 

分 类 号：TM743[电气工程—电力系统及自动化]