呼辽直流工程次同步振荡的数模混合仿真  

Digital-Analog Hybrid Simulation Study on Subsynchronous Oscillation of ±500 kV DC Transmission Project From Hulun Buir to Liaoning

作　　者：刘翀[1] 穆清[1] 蒋卫平[1] 陈凌芳[1] 王明新[1] 项祖涛[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2011年第10期47-52,共6页Power System Technology

摘　　要：直流输电可能引发整流站附近的火电机组产生次同步振荡现象。为确保呼辽交直流系统运行的安全稳定性,采用数模混合实时仿真的方法,对呼辽直流输电系统可能引发呼盟汽轮机组次同步振荡的问题进行了研究。通过仿真研究,深入分析了呼辽交直流输电系统在不同运行方式下发生次同步振荡的风险,研究了直流系统运行工况对次同步振荡的影响,验证了直流控制系统内采用次同步阻尼控制器抑制次同步振荡的有效性,并提出了相应的建议。HVDC system may cause sub-synchronous oscillation （SSO） occurred in thermal power units near rectifier station. To ensure secure and stable operation of AC/DC power transmission system from Hulun Buir to Liaoning, the possibly occurred subsynchronous oscillation （SSO） of turbogenerating units in Hulun Buir League, which might be caused by HVDC power transmission system from Hulun Buir to Liaoning, is studied by digital-analog hybrid simulator, and the risk of occurring SSO under different operation modes of AC/DC power transmission system from Hulun Buir to Liaoning is analyzed in depth, besides, the impacts of operating conditions of HVDC power transmission system on SSO are studied. The effectivity of adopting SSO damping controller in control system of HVDC power transmission project is verified by results of hybrid digital-analog hybrid simulation, and corresponding suggestions are given.

关 键 词：直流输电 次同步振荡 数模混合实时仿真 次同步阻尼控制器 

分 类 号：TM71[电气工程—电力系统及自动化]