基于电力系统仿真软件的静止无功系统模型应用  

Static Var System Models of PSS/E and Their Application in Simulations

作　　者：杨健[1] 徐政[1] 游广增 YANG Jian;XU Zheng;YOU GuangZeng(Department of Electric Engineering,Zhejiang University,Hangzhou 310027,China;Center of Power Grid Planning and constructing,Yunnan Power Grid Ltd.,Kunming 650011,China)

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]云南电网有限责任公司电网规划建设研究中心,昆明650011

出　　处：《云南电力技术》2019年第1期1-6,21,共7页Yunnan Electric Power

摘　　要：静止无功系统(Static Var Systems,SVS)是静止无功补偿装置和机械投切的无功补偿装置的组合,可用于提高电力系统电压稳定性、增加系统阻尼和改善电能质量等。SVS模型的适用性直接影响仿真结果的准确性。电力系统仿真软件PSS/E中的三种SVS模型具有通用性和准确性,是机电暂态仿真中模拟SVS动态特性的典型模型。本文首先讨论SVS模型在机电暂态仿真中的模拟原则,之后对PSS/E中的三种SVS模型进行分析比较。最后,通过仿真算例验证SVS的动态无功补偿作用,分析慢速电纳控制、非线性斜率控制和直接死区控制的特点。研究结果表明,控制参数选择时应兼顾响应时间、动态无功裕度和允许的电压变化范围。Static Var Systems(SVS)are defined as combinations of different static and mechanically switched var compensators. SVS have been widely used in enhancing the voltage stability, damping the power oscillation and improving the power quality. There are three generic SVS models in the power system simulation software PSS/E.These models are versatile and accurate. They are typical models of SVS in electromechanical transient simulation. In this paper, the simulation principles of SVS are discussed at first. Then the block diagrams of PSS/E SVS models are introduced, and are compared with each other. The effect of SVS in dynamic reactive compensation and the comparison of the slow susceptance controller, the non-linear droop controller and the deadband controller are presented in study cases. Result shows that when choosing the parameters of these controllers, the response time, the dynamic reactive power margin and the allowable voltage variation range should be taken into consideration.

关 键 词：静止无功系统 动态模型 机电暂态仿真 PSS/E SVC 

分 类 号：TM74[电气工程—电力系统及自动化]