小水电站群孤网运行电压控制方法研究  

Research on Voltage Control Strategy of Isolated Operation in Small Hydropower Stations

作　　者：李桂昌 张俊潇 LI Gui-chang;ZHANG Jun-xiao(Guangzhou Power Electrical Engineering Technology Co.,Ltd.,Guangzhou 510670,China;Guangdong Power Grid Development Research Institute Co.,Ltd.,Guangzhou 510080,China)

机构地区：[1]广州市奔流电力科技有限公司,广东广州510670 [2]广东电网发展研究院有限责任公司,广东广州510080

出　　处：《机电工程技术》2017年第6期120-123,共4页Mechanical & Electrical Engineering Technology

摘　　要：小水电具有分散开发、就地成网、就地供电和发电成本低的特点,然而部分小水电区域电网与主网联系薄弱,在丰水期时由于雷电或过电压等原因容易形成孤网。孤网运行时由于存在系统功率不平衡以及电源调节能力不足等特点,可能导致孤网电压失稳,从而影响孤网系统的安全性和可靠性。因此,针对小水电站群孤网运行的情况,借助小水电机组、D-STATCOM和储能等设备以研究小水电站群孤网的电压控制方法。研究结果可为孤网运行的电压控制提供技术指导。Small hydropower has the characteristics of distributed development,on-site network,local power supply and low power generation cost.However,some small hydropower regional power grids are weakly connected with the main network.In the wet period,the small-scale hydropower regional power grid is easy to form an isolated network due to lightning or over-voltage.Because of the system power imbalance and the lack of power regulation ability,it is easy to cause the voltage instability,which affects the security and reliability of the isolated system.Therefore,the voltage control strategy of small hydropower stations is proposed with the help of small hydropower units,D-STATCOM and energy storage,aiming at the operation of small-scale hydropower stations.The results can provide technical guidance for the voltage control of isolated network operation.

关 键 词：小水电站群 孤网运行 电压控制方法 储能 D-STATCOM 

分 类 号：TM761[电气工程—电力系统及自动化]