大容量设备启停对有光伏接入的孤立电网的影响  

Influence of Large-Capacity Equipment Start-Stop on Isolated Grid Connected with Photovoltaic

作　　者：沙旦华[1] 靳希[1] 祁晓卿[1] 曹炜[1] 杨秀[1] 张菲菲[1] 

机构地区：[1]上海电力学院电力与自动化工程学院,上海200090

出　　处：《华东电力》2011年第11期1776-1779,共4页East China Electric Power

基　　金：国家自然科学基金项目(50907039);西藏电力有限公司科技项目(SJB-2010-001);河北电力公司科技帮扶项目(KJ-2010-112)~~

摘　　要：孤立电网规模小,电源数量少,负荷变化大,大容量设备启停会造成孤立电网电压和频率的剧烈波动,且不同运行方式下波动差别较大。介绍了某孤立电网及光伏接入的概况,通过在多种运行方式下,大容量设备启停过程中对孤立电网系统频率及光伏电站35 kV侧母线电压的影响的仿真分析,为光伏并网逆变器频率保护及低电压保护设置提供参考依据与建议。Isolated grid, with smaller scale, fewer power sources and larger load changes, may be subject to drastic voltage and frequency fluctuations caused by the startup or shutdown of the large capacity equipments, and the fluctuations differ sharply in different operational modes. This paper conducts the simulation analysis about how the startup or shutdown of the large capacity equipments influences the isolated grid system frequency and the 35 kV bus voltage of photovohaic power station. This research can provide certain reference and advice for the frequency protection and low voltage protection settings of photovoltaic grid inverter.

关 键 词：孤立电网 光伏并网 电网稳定 设备启停 

分 类 号：TM92[电气工程—电力电子与电力传动]