恒速风电机组对电网暂态电压稳定性的影响  

Impact of Fixed-speed Wind Turbine on Transient Voltage Stability of Power Grid

作　　者：马越[1] 陈星莺[1] 余昆[1] 胡鹤轩[1] 

机构地区：[1]河海大学能源与电气学院,江苏南京211100

出　　处：《水电能源科学》2013年第7期246-249,共4页Water Resources and Power

基　　金：国家自然科学基金资助项目(51077043)

摘　　要：基于恒速风电机组的结构,给出风电机组各部分的数学模型,利用仿真软件DIgSILENT/PowerFactory建立恒速风电机组的动态模型,并利用该模型在WSCC 3机9节点算例中仿真恒速风电机组并网运行时因风速变化引起的电网电压波动,通过极限切除时间分析恒速风电机组并网对电网暂态电压稳定性的影响,并与接入相同容量的同步机组进行比较。结果表明,恒速风电机组的接入降低了电网的暂态电压稳定性,且随接入恒速风电机组装机容量的增大,电网的暂态电压稳定性不断降低。由此提出一些改善恒速风电机组并网后电网暂态电压稳定性的建议。Based on the structure of fixed-speed wind turbine, this paper gives the mathematical model of each part of wind turbine. And then the simulation software DIgSILENT/PowerFactory is used to build the dynamic model of the wind turbine. Taking 9-node system of WSCC3 wind turbine for an example, the voltage fluctuation of the grid caused by wind speed variation is simulated when the wind turbine is connected into grid. And it also analyzes the impact of fixed- speed wind turbine on the transient voltage stability of power grid by limit removal time. Compared with the synchronous unit of same capacity, the results show that the connection of fixed-speed wind turbine reduces the transient voltage stability of the grid and it got worse with the increasing of fixed-speed wind turbine capacity. So, some measures are put forward to improve the transient voltage stability of the grid for connection of the wind turbine.

关 键 词：恒速风电机组 电压波动 暂态电压稳定性 并网 

分 类 号：TM712[电气工程—电力系统及自动化] TM614