附加励磁阻尼控制器对励磁系统的要求分析Analysis of the Requirement of the Supplementary Excitation Damping Controller on Excitation System
顾益磊,王西田,赵大伟,许其品,赫卫国
GU Yilei,WANG Xitian,ZHAO Dawei,XU Qipin,HE Weiguo
摘要(Abstract)：
我国火电基地采用串补技术向负荷中心送电已被验证存在次同步谐振(SSR)问题。为此建立了励磁系统功率单元的时域仿真模型和频域模型,在此基础上分析附加励磁阻尼控制器(SEDC)对功率单元控制模式的要求。通过对功率单元的特性分析、频率特性分析和时域仿真,量化分析励磁系统整流电路触发控制模式对SEDC性能的影响,得到要有效实现SEDC对次同步谐振的阻尼效果,必须要求励磁功率单元采用分相触发模式的结论。
It is already proved that there is subsynchrous resonance(SSR) during power transmission from calfired power plants using series compensation to the load center. Therefore, the time-domain simulation model and frequency-domain model for power unit of excitation system are built, on the basis of which the requirements of the supplementary excitation damping controller(SEDC) on control mode of power unit are analyzed. By analysis of power unit characteristic, frequency characteristic and time-domain simulation, the paper conducts quantitative analysis of the impact of trigger control mode of rectifying circuit on SEDC. It is concluded that phase control mode must be adopted on excitation power unit in order that damping on SSR can be realized.
关键词(KeyWords)：
附加励磁阻尼控制器;励磁功率单元;分相触发;等间隔触发
SEDC;excitation power unit;phase trigger control;equidistant trigger
基金项目(Foundation):
作者(Author):
顾益磊,王西田,赵大伟,许其品,赫卫国
GU Yilei,WANG Xitian,ZHAO Dawei,XU Qipin,HE Weiguo
DOI: 10.19585/j.zjdl.2014.04.002
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