基于时域分析法的黑龙江某600MW机组励磁系统参数辨识

Parameter identification of excitation system for a 600 MW unit in Heilongjiang based on time domain analysis

为了得到黑龙江电网日常生产调度和电力系统稳定分析所需的准确计算数据,以黑龙江地区某600 MW机组励磁系统为研究对象,给出了一种基于现场实测数据的励磁系统参数辨识方法。该方法通过对发电机励磁系统进行时域测试,采集励磁系统相关数据。在电力系统分析软件PSASP中,选取12励磁系统模型为600 MW机组励磁系统模型,由实测数据计算电机励磁系统模型所需参数,利用此参数对发电机励磁系统进行空载小扰动阶跃仿真。仿真结果验证了该测试方法的可行性及励磁控制系统模型参数的准确性。

In order to get the accurate calculation data needed for daily production scheduling and power system stability analysis of Heilongjiang power grid,taking the excitation system of a 600 MW unit in Heilongjiang as the research object,a parameter identification method of excitation system based on the field measurement data is presented.The relevant data of excitation system are collected by testing the excitation system of generator in time domain.12 excitation system model is chosen as the excitation system model of 600 MW unit in the power system analysis software PSASP.The parameters needed for the excitation system model of the generator are calculated from the measured data,and the no-load small disturbance step simulation of generator excitation system is carried out by using the parameters.The simulation results verify the feasibility of the proposed method and the accuracy of the excitation control system model parameters.