风火打捆交直流外送系统功角暂态稳定研究  

Study on Angle Transient Stability for Wind-thermal-bundled Power Transmitted by AC/DC System

作　　者：郭小江[1] 赵丽莉[2] 汤奕[2] 申洪[3] 

机构地区：[1]电力系统仿真控制教育部重点实验室(天津大学),天津市南开区300072 [2]东南大学,江苏省南京市210096 [3]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2013年第22期19-25,6,共7页Proceedings of the CSEE

基　　金：国家电网公司科技项目(XT71-11-006)~~

摘　　要：风火打捆交直流外送是未来千万千瓦级风电能源基地电力外送的重要方式之一,亟需掌握风火打捆交直流外送系统的稳定特性及其机理。文章分析了不同风电比例和不同直流控制方式下系统的暂态功角稳定特性,探讨了风电、火电和直流系统间的交互作用,并基于扩展等面积(extendedequal-area criterion,EEAC)理论分析了送受端机组惯量对系统功角暂态稳定性的影响机理。结果表明:在受端电网为无穷大系统的场景下,系统暂态功角稳定性随风电比例增加而改善;在送受端机组惯量可比场景下,存在最优风电与火电配置比例,使得系统暂态功角稳定性最好。For the 10 GW wind power bases in China,wind-thermal-bundled power transmission by AC/DC system is regarded as one of feasible ways,but the stability characteristic of this kind of transmission systems should be investigated.In the paper,the angle transient stability characteristics were studied in the scenarios with different wind power penetration and DC control modes through simulations,and the interaction among wind power,thermal power and DC systems was discussed.Besides,the effects of the inertias of sending and receiving end systems on the angle transient stability characteristics were studied based on extended equal-area criterion（EEAC）.When the receiving end power grid is equated to an infinite system,the system angle transient stability is improved with the increase of wind power penetration,while the equivalent inertia of the sending end can be comparable to that of the receiving end,there is an optimal wind power penetration with which the system has the highest angle transient stability.

关 键 词：风火打捆 交直流 风电比例 扩展等面积 

分 类 号：TM71[电气工程—电力系统及自动化]