摘要
独立运行光伏电力系统中存在着电压稳定问题。根据系统的特点和问题的性质,采用时域数值仿真的方法分析,应用M atlab建立系统仿真模型,并搭建了实验系统平台,采用瞬时无功功率求解法快速检测无功功率。仿真和实验结果证明无功功率不平衡是导致该类系统不稳定的主要原因。最后,提出了解决暂态电压稳定的有效办法和措施,对独立光伏电站的正常运行有指导性意义。
Voltage instability of a stand-alone photovoltaic power system is studied. According to system＇s characters and the instability problem in PV system, a simulation model is built by using numerical simulation method in time-domain and instantaneous reactive power theory, and a experimental system is established. The results of simulation and experiment show that the imbalance of reactive power in the system is the main reason of instability. A solution based on instantaneous reactive power theory is presented, which has guiding significance to make PV system run normally.
出处
《继电器》
CSCD
北大核心
2006年第23期39-43,共5页
Relay
关键词
独立光优系统
暂态稳定
时域数值仿真
瞬时无功功率
无功补偿
stand-alone photovohaic power system
transient stability
numerical simulation method in time-domain
instantaneous reactive power
reactive power compensation
