计及风电场的发输电可靠性评估  

Reliability assessment of composite generation and transmission system considering wind farms

作　　者：姜文[1] 严正[1] 杨建林[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《电力系统保护与控制》2010年第22期126-130,178,共6页Power System Protection and Control

基　　金：国家863专项科研基金项目(2007AA05Z458)

摘　　要：为了评估风电并网对发输电系统可靠性的影响,建立了基于序贯蒙特卡罗方法的风电场发输电可靠性模型。该模型充分考虑了机组、线路、变压器以及风力发电机等设备元件的运行状态,同时采用了最优切负荷,给出具体的算法流程,并提出可靠性指标BIEWG。算例采用IEEE-RTS测试系统,风电场是由100台V90-2MW的双馈异步风力发电机组成,风速数据取自东海风电场。仿真结果验证了所提算法的正确性,风电机组的接入对提高发输电组合系统的可靠性具有明显的作用。该算法可以被系统规划者用来有效地评估风电并网对系统可靠性的影响。In order to evatuate the effect ofgrid-connected wind farms on the power system reliability, a wind farm reliability model based on sequential Monte Carlo is established. The operation state of conventional generating units, transmission lines, transformers and wind turbine are considered thoroughly in this model. Meanwhile, an optimal load shedding model is used and a detailed flow diagram of the algorithm is established. The reliability index BIEWG （the benefit of interrupted expectation from wind generation） is proposed. The IEEE-RTS test system is adopted in the algorithm. Wind farm is made up of 100 doubly fed wind turbine of V90-2 MW. Wind speed data come from Donghai wind farm. The simulation results verify the correctness of the algorithm, and show that the wind power reliability can be improved after the wind turbine is switched in. The proposed algorithm can be utilized by power system planners to effectively evaluate the effect of grid-connected wind farms on power system reliability.

关 键 词：序贯蒙特卡罗 可靠性 最优切负荷 双馈异步风力发电机 

分 类 号：TM732[电气工程—电力系统及自动化]