数字励磁调节器完整功能建模与仿真  

Modeling and Simulation on Performance of Digital Automatic Voltage Regulator

作　　者：苏为民[1] 吴涛[1] 姚谦[1] 谢欢[1] 史扬[1] 

机构地区：[1]华北电力科学研究院有限责任公司,北京市西城区100045

出　　处：《电网技术》2011年第12期100-106,共7页Power System Technology

摘　　要：基于实时数字仿真系统(real time digital simulation,RTDS)和数字励磁调节器(automatic voltage regulator,AVR)装置构建了物理数字联合仿真平台,并针对AVR辅助控制及限制环节功能可能存在的缺陷设计了包括低频振荡、过励、进相和定子过流等项目的试验方案。利用RDTS对某AVR装置进行建模仿真,并在时域范围内比较仿真模型与实际装置对各种扰动的动态响应,验证了试验方法和仿真建模的正确性,并分析指出了该AVR装置在强励限制上特性与国标要求不一致之处。A combined physical-mathematical simulation platform based on real time digital simulation （RTDS） and digital automatic voltage regulator （AVR） is constructed, and in allusion to defects possibly existing in the functions of auxiliary control and limiting link in AVRs a testing scheme including such items as low-frequency oscillation, over-excitation, under-excitation operation, over current of generator stator and so on is designed. Using the designed testing scheme the modeling and simulation of a certain AVR device are performed by RTDS, and dynamic responses of simulation model and actual device to various disturbances are compared to verify the correctness of testing method, simulation and modeling. Based on the testing results it is pointed out that the characteristic of forced excitation limiting of the simulated AVR is inconsistent with the requirement specified in China National Standard and this phenomena is analyzed. Testing results show that the parameters and models offered by AVR manufacturers should not be simply accepted, especially in auxiliary limiting links the design idea and parameter benchmarks of different manufacturers are not same, even someone does not confirm to National Standard, thus it is necessary for them to carry out rigid tests and detections.

关 键 词：数字励磁调节器 辅助限制环节 实时数字仿真系统 励磁系统管理 

分 类 号：TM743[电气工程—电力系统及自动化]