不同励磁模式下的汽轮发电机转子绕组匝间短路故障特征分析  

Characteristic Analysis of Rotor Winding Inter-Turn Short Circuit Fault for Turbo Generator Rotor Winding under Different Excitation Modes

作　　者：武玉才[1] 袁浚峰 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电机与控制应用》2016年第9期86-91,共6页Electric machines & control application

摘　　要：转子绕组匝间短路是汽轮发电机常见故障之一,早期的准确检测对电力系统的安全稳定运行具有重要意义。利用Ansoft与Simplorer软件建立同步发电机转子绕组匝间短路故障的联合仿真模型,分别在恒励磁电流和恒励磁电压两种励磁模式下,得到转子绕组匝间短路时发电机各特征量的变化规律。通过比较,分析不同励磁模式下转子绕组匝间短路时不同的故障特征,为自动电压控制(AVC)励磁调节模式下发电机转子绕组匝间短路故障的分析和诊断奠定基础。Rotor inter-turn short circuit was one of the common faults of turbo generator. The early and accurate detection of the inter- turn short circuit was very important for the safe and reliable operation of the power generation system. Using Ansoft and Simplorer software, simulation model of rotor winding inter-turn short circuit in synchronous generator was established. The variation law of each characteristic of the generator was obtained when the rotor winding inter-turn short circuit,under the condition of constant excitation current and constant excitation vohage. By comparison, the different fault characteristics of rotor winding inter-turn short circuit under different excitation modes were analyzed, which laid the foundation for the analysis and diagnosis of rotor winding inter-turn short circuit fault in AVC excitation regulation mode.

关 键 词：转子绕组匝间短路 联合仿真 励磁模式 有限元 

分 类 号：TM307.1[电气工程—电机]