摘要
针对微网的网架结构和运行特点,根据潮流解的存在性推导了一种适用于微网的静态电压稳定指标。该指标考虑了节点电压的影响,且不受网络R/X值限制;另外其在推导过程中不需进行网损等值,因此误差较小。搭建了13节点微网系统,验证了推导指标的正确性,最后利用该指标分析了PV、PI、P-Q(V)3种节点类型的分布式电源及其位置和容量对微网静态电压稳定性的影响。
In allusion to the grid structure and operation characteristics of microgrid, a static voltage stability index for microgrid is de- duced based on the existence of the power flow. The index has taken the node voltage into account and is free from the influence of the grid＇s R/X; besides, it has a smaller error for no network loss equivalent during its deduction. Then one 13-node microgrid system is established to validate the deduced index, finally the index is used to analyze the influences of distributed sources including the PV, PI, P-Q （V） node types as well as heir locations and capacities on the static voltage stability of microgrid.
出处
《东北电力技术》
2017年第5期14-17,共4页
Northeast Electric Power Technology
关键词
微网
电压稳定指标
分布式发电
电压稳定性
microgrid
voltage stability index
distributed source
voltage stability
