基于发电机异步自励磁试验及机组轴系扭振暂态试验的同步电机参数辨识方法  

Electrical Parameters Measurement and Identification Method of Synchronous Machine based on Asynchronous Self-excitation Test and Torsional Vibration of Unit Shafting Transient Test

作　　者：康海燕 田继伟 王绍德 任树东 朱芸 徐珂 KANG Haiyan;TIAN Jiwei;WANG Shaode;REN Shudong;ZHU Yun;XU Ke(North China Power Engineering Co.,Ltd.,Beijing 100120,China;Tuoketuo Power Plant,Datang International Power Generation Co.,Ltd.,Hohhot 010206,China)

机构地区：[1]华北电力设计院有限公司,北京100120 [2]内蒙古大唐国际托克托发电有限责任公司,呼和浩特010206

出　　处：《大电机技术》2023年第3期36-42,共7页Large Electric Machine and Hydraulic Turbine

摘　　要：采用阻塞滤波器方案治理次同步谐振的研究,对同步发电机电气参数在计算异步自励磁和机网复合共振时的准确性提出了更高要求。本文提出了一种基于发电机异步自励磁试验及机组轴系扭振暂态试验的同步电机参数修订辨识方法,该方法在厂家设计参数基础上,保持部分较为可靠的d、q轴参数不变,调整部分潜在误差较大且对次同步谐振/振荡较为敏感的d、q轴参数,并采用调整后参数由电磁暂态仿真程序进行与现场试验相同条件下的上述两种仿真试验,将仿真结果与现场试验的结果进行比对,经过多次迭代,直至轴系扭振各模态的振荡特性、以及异步自励磁的激发特性与相同条件下的现场试验结果基本吻合时,认为仿真试验使用的参数为修订辨识的同步电机参数。实际工程的现场试验结果验证了本方法用于次同步谐振/振荡问题分析的可行性与准确度。The research on using blocking filter to mitigate subsynchronous resonance(SSR)puts forward higher requirements for the accuracy of synchronous generator electrical parameters in studying on asynchronous self-excitation and torsional interaction problems.This paper presents an electrical parameter measurement and identification method based on asynchronous self-excitation test and torsional vibration of unit shafting transient test,which has the advantages of simple test operation and clear identification target.Based on the design parameters of the manufacturer,the relevant operational parameters of d-axis and q-axis are continuously adjusted,so that the simulation curve of unit rotation speed difference basically consistent with the non-synchronizing parallel test recording curve under each torsional vibration modal frequency,and the simulation curve of generator stator current basically consistent with the asynchronous self-excitation test recording curve under each asynchronous self-excitation modal frequency,thus a set of electrical parameters can be identified.The field test results verify the feasibility and accuracy of this method in studying SSR/SSO problem.

关 键 词：同步发电机 次同步谐振/振荡 异步自励磁 机网复合共振 

分 类 号：TM341[电气工程—电机]