发电机静态励磁系统产生的轴电压分析和防治  

Analysis and Prevention Measures of Shaft Voltage Produced by Generator Static Excitation System

作　　者：徐永金[1] 王健[1] 苏猛业[1] 

机构地区：[1]安徽淮南平圩发电有限责任公司,安徽淮南232089

出　　处：《安徽电力》2011年第3期12-16,共5页Anhui Electric Power

摘　　要：目前,国内、外大型汽轮机组基本上采用静态励磁系统作为发电机转子励磁电流的供电电源,静态励磁系统引起的轴电压对发电机组轴瓦电腐蚀的危害程度也比传统的励磁方式大得多。在重点分析了静态励磁系统的轴电压产生原因及传输机理之后,针对机组实际运行工况进行了相关试验测试,根据试验结果给出了相应的防范措施。目前,这些轴电压防治措施已经在国、内外大型机组上得到广泛应用。At present, the domestic and foreign large-scale steam turbine basically static excitation system, as a generator rotor excitation current power supplies. Static excitation system cause axis for inspecting the voltage electricity corrode damage degree also greatly than traditional excitation way. This article mainly analyzes the shaft voltage static excitation system causes and .transmission mechanism. In the actual operating conditions and the correlation to the test, according to the testing results given the corresponding preventive measures. At present, these shaft voltage control measures, and in countries has widely used on large units.

关 键 词：汽轮发电机组 静态励磁 轴电压 轴瓦电腐蚀 大轴接地 阻容模块 

分 类 号：TM311.03[电气工程—电机]