CAJ | 학술논문

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。
위료심입지연구화중-화북교류호련동보전망적운행궤리，장화중전망여화북전망간화등치성일개7궤48절점계통，해등치계통교호지보류원형계통적련락선조류정태특성、련락선공솔동태특성、대우동충격특성화단로전류특성。통과대해등치계통방진분석，초보증명료방진중발현적사천구역전망개별모선엄중고장도치화중전망여화북전망간교류련락선발생해렬적현상속우공각실은범주，기우차제출료일충실용적가제고계통은정성적조시。
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. <br> This work is supported by State Grid Corporation of China,Major Projects on Planning and Operation Control of Large Scale Grid(No.SGCC-MPLG026-2012)and National Natural Science Foundation of China(No.51177057).