1000MW汽轮发电机定子出线套管绝缘设计  

Insulation Design of Stator Bushing of 1 000 MW Turbo-generator

作　　者：任晓[1] 王军[1] 方春恩[1] 李伟[1] 梁鸣华[1] 彭云 杨立锋 

机构地区：[1]西华大学电气信息学院先进计算研究中心,成都610039 [2]东方电气集团东方电机有限公司,德阳618000 [3]四川电力公司劳动甘孜公司,康定626000

出　　处：《高压电器》2013年第4期37-42,共6页High Voltage Apparatus

基　　金：智能电气设备重点实验室项目(XZD0819);四川电力电子重点学科项目(SZD0503);1000MW级汽发定子出线套管合作研制(10209213)~~

摘　　要：绝缘结构设计是高压电气设计的最核心问题,绝缘结构能否满足设计要求,对产品的安全运行十分重要。设计了3种不同的27 kV 1 000 MW汽轮发电机定子出线套管的绝缘结构:无屏蔽电极、单屏蔽电极和双屏蔽电极,利用Maxwell 10.0有限元软件进行仿真分析,得到最大电场强度及位置、典型位置电场分布曲线;通过比较不同方案中电场强度的最大值及电场强度分布情况,并与实际运行中的绝缘介质的击穿场强进行比较,最终确定了1 000 MW汽轮发电机定子出线套管最优绝缘结构———双屏蔽电极结构,为1 000 MW汽轮发电机定子出线套管绝缘设计的实际应用提供理论依据。Insulation structural design is the core problems of high voltage electrical design, and it is very important for the safe operation of the product whether insulation structure can meet the design requirements. Three types of insulation structure of stator bushing of 1 000 MW turbo-generator are designed, which are no shield electrode type, single-shield electrode type and double-shielded electrode type. The maximum of electric field strength and its position and the typical location field distribution curve is obtained by use of Maxwell 10.0 finite element software for simulation analysis. The maximum electric field strength and electric field distribution of different programs are compared, and the actual operation of the dielectric breakdown field strength compared. Ultimately double-shielded electrode type is determined, which is the optimal insulation structure of stator outgoing lines bushing of 1 000 MW turbo-generator. It provides a theoretical basis for insulation design of stator outgoing lines bushing of 1 000 MW turbo-generator.

关 键 词：1 000 MW 出线套管 绝缘设计 电场强度 电场分布 

分 类 号：TM311[电气工程—电机]