采用隔直参数分析不同PSS配置模型的适应性  

Adaptability Analysis of PSS Configuration Models by DCBlocking Parameter

作　　者：刘翔宇 程伦 李铁成 高泽明 何玉灵[3] 陈二松 樊锐轶 LIU Xiangyu;CHENG Lun;LI Tiecheng;GAO Zeming;HE Yuling;CHEN Ersong;FAN Ruiyi(State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China;State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050000,China;Institute of Equipment Fault Diagnosis and Testing Technology,North China Electric Power University,Baoding 071003,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021 [2]国网河北省电力有限公司,河北石家庄050000 [3]华北电力大学设备故障诊断与检测技术研究所,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2021年第1期24-32,共9页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51777074).

摘　　要：通过分析隔直参数对PSS阻尼效果的影响,研究了不同PSS配置模型的适应性。首先介绍了加速功率型PSS的逻辑模型和功率隔直环节的合成原理,阐述了单机无穷大模型的应用假设。其次以实际机组为例,采用单机无穷大模型和相位补偿原理对PSS的阻尼效果进行了理论分析。然后采用双机模型进行了隔直参数对阻尼效果的影响研究,分析了不同振荡频率下隔直参数对振荡模式的影响特点。最后采用实际电网仿真的方式,检验了隔直参数变化对振荡模式的影响效果。通过对不同PSS配置模型得到结果的对比分析,得到了隔直参数对PSS阻尼效果影响明显,利用单机无穷大系统配置PSS存在风险的结论。论文成果对PSS的工程配置具有参考意义。This paper studied the adaptability of different PSS configuration models by analyzing the impact of DC blocking parameter on the damping effect of PSS.Firstly,we introduced the logic model of the accelerated power PSS and the synthesis principle of the power blocking link as well as the hypothesis of one machine infinity bus(OMIB)model.Next,we theoretically analyzed the damping effect of PSS in actual unit by OMIB model and phase compensation principle.Then,we studied the influence of DC blocking parameter on damping effect in dual systems.Finally,we analyzed the influence characteristics of DC blocking parameter on oscillation modes under different frequencies and tested its influence effect by simulation in actual power grid.After comparing the analysis of different PSS configuration models,we came to the conclusion that DC blocking parameter has a significant influence on the damping effect of PSS,and that there is risk of PSS configuration in OMIB model.The achievements obtained in this paper has reference significance to the engineering configuration of PSS.

关 键 词：PSS 隔直环节 参数配置 单机无穷大系统 

分 类 号：TM712[电气工程—电力系统及自动化]