摘要
为满足工程规划设计的需要,分析了基于模块化多电平换流器(Modular Multilevel Converter, MMC)的统一潮流控制器(Unified Power Flow Controller,UPFC)的等效电路,提出一种基于PSS/E的机电暂态仿真方法。采用该方法进行潮流计算时,将UPFC用功率注入等效,利用交替迭代法进行求解。在动态仿真中,将UPFC等效为电流源模型,并考虑直流系统、控制器和调制等环节的作用。将该方法集成于PSS/E中,分别对小系统和实际系统进行仿真。结果表明,所提方法能够实现含UPFC电力系统的潮流计算,可模拟UPFC的动态特性,适用于对实际系统的仿真研究。
In order to meet the needs of project planning and design,the equivalent circuit of the Unified Power Flow Controller(UPFC)based on the Modular Multilevel Converter(MMC)is analyzed.Then,an electromechanical transient simulation method based on PSS/E is proposed.The power injection model of the UPFC and the alternating iteration method are used in the load flow calculation.To realize transient simulations,the UPFC is represented by current sources.The direct current system,controllers and the modulation of the UPFC are taken into consideration.By integrating this method in PSS/E,both a small system and a real system are tested.The results show that the proposed method,which is suitable for real power systems.
作者
蔡晖
杨健
彭竹弈
谢珍建
宋鹏程
徐政
CAI Hui;YANG Jian;PENG Zhuyi;XIE Zhenjian;SONG Pengcheng;XU Zheng(State Grid Jiangsu Electric Power Co.,Ltd.Economic Research Institute,Nanjing 210008,China;Zhejiang University,Hangzhou 310027,China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2018年第19期117-125,共9页
Power System Protection and Control
基金
国网江苏省电力有限公司科技项目"含UPFC等柔性输电设备长过程动态稳定特性及仿真技术研究"~~
