多机互联系统下的PSS性能分析  

Analysis of PSS Working Performance under Multi-Machine System

作　　者：雷阳 何信林[1] 段建东[2] 杨世强 冯海斌[3] LEI Yang;HE Xinlin;DUAN Jiandong;YANG Shiqiang;FENG Haibin(Xi’an Thermal Research Institute Co.,Ltd.,Xi’an 710054,Shaanxi China;Department of Electrical,Xi’an University of Technology,Xi’an 710048,Shaanxi,China;Huaneng Haikou Power Plant,Haikou 571923,Hainan,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]西安理工大学电气系,陕西西安710048 [3]华能海口电厂,海南海口571923

出　　处：《电网与清洁能源》2019年第9期50-56,共7页Power System and Clean Energy

基　　金：国家自然科学基金项目(51877174);强电磁工程与新技术国家重点实验室(华中科技大学)开放课题基金(2018KF001);电力设备电气绝缘国家重点实验室(西安交通大学)开放课题项目(EIPE18201)~~

摘　　要：利用PSS稳定器提高电力系统稳定性是一种被普遍采用的有效方法,工程中一般基于单机无穷大系统采用相位补偿方法对其进行现场参数试验计算。但系统理论自振频率和实际电网运行存在差异,考虑实际网侧运行来研究励磁系统特性将会更加准确。在Phillip-Heffron模型基础上,讨论了多机系统下发电机模型的建立,并结合了双端供电、交直流输电2个典型多机系统下暂态扰动的仿真测试,通过比对等效PSS系统和实际工程中的PSS系统,分析了其在多机互联场景下的动态效果,对于PSS的性能改善具有积极意义。PSS is a simple and effective method to improve the stability of power system.In engineering,the phase compensation method is usually used to calculate field parameters of single machine infinite bus system.However,there are differences between the theoretical natural frequencies of the system and the actual grid operation.Considering the actual grid side operation,it will be more accurate to study the characteristics of the excitation system.On the basis of Phillip-Heffron model,this paper discusses the establishment of generator model in multi-machine system,and based on the simulation test of transient disturbance in two typical multimachine systems of double-terminal power supply and AC/DC transmission,the dynamic effect in multi-machine interconnection scenario is analyzed by comparing the equivalent PSS system with the PSS system in the practical engineering,which is of positive significance for improving the performance of PSS.

关 键 词：Phillip-Heffron模型 多机系统 PSS 交直流系统 

分 类 号：TM761[电气工程—电力系统及自动化]