摘要
大规模新能源接入,电力电子设备的引入等使得现代电力系统越来越复杂,在振荡方面的事故时有发生,严重威胁电力系统的安全稳定运行。目前有关电力系统振荡发生的成因有一些研究成果,但是这些成果并不统一,之间存在明显差异。提出了三个观点:①电力系统发生振荡是极小概率事件,一般不会发生;②振荡发生的本质是一些相关设备参数、控制参数、系统拓扑结构等在特定条件下引起;③振荡发生后,多种手段(如任意修改有关参数和拓扑)都可以相对容易地抑制振荡。结合火电机组出力不同、风电场拓扑结构不同、输电线路长度不同、风机控制器参数不同等各种情况,进行了基于DigSILENT/PowerFactory软件的仿真,有关结果验证了上述三个观点的合理性。
At present,there are some research results on the causes of power system oscillations,but these results are not uniform,and there are obvious differences.This paper puts forward three viewpoints:①The oscillation of the power system is a very small probability event,which generally does not occur.②The nature of the oscillation occurs is that some related e-quipment parameters,control parameters,system topology,etc.caused under certain conditions,③After the oscillation occurs, various means (such as arbitrarily modifying related parameters and topology) can suppress the oscillation relatively easily. Specifically,based on the different output of thermal power units,different wind farm topologies,different transmission line lengths, and different controller parameters,the simulation based on DigSILENT/PowerFactory software is carried out,this paper verificates of the rationality of the above three points.
出处
《工业控制计算机》
2019年第5期155-157,共3页
Industrial Control Computer
基金
南瑞智能电网保护和运行控制国家实验室开放课题(51577031)
