论发电机电压互感器故障导致10KV母线失压事故的应对措施

论发电机电压互感器故障导致10KV母线失压事故的应对措施摘要本文通过对热电厂Q℉-3-2发电机因电压互感器故障，导致母线失压事故，找出热电厂发电机电压互感器发生故障的原因，并提出防止类似事故再次发生的对策，保证热电厂供电系统安全可靠的运行。热电厂作为供电的核心部门，担任着整个生产厂区的供电任务，在生产过程中，为了保证产品的工艺、质量和安全，也对供电系统有着较高的要求，所以热电厂的正常运行，对生产起着举足轻重的作用。发电机电压互感器是电力系统极为重要的测量设备，其二次回路故障直接威胁着机组的安全运行，会对热电厂正常供电造成较大的影响。为了保证供电系统的可靠运行，找到发生故障的原因，对存在的隐患进行彻底的整改，并总结经验，以防止类似事故的再次发生，具有重要的意义。因此，本文对此问题进行专项调查、分析和试验，并力求通过改造，减少发电机电压互感器回路故障的发生。事实证明，经过仔细分析问题症结所在，并对此进行处理，就能使发电机和供电系统安全可靠的运行，也能保证生产的正常进行。关键词：电力系统；发电机；电压互感器；故障第！页AbstractIn this paper,through the failure of the voltage transformer of QF-3-2 generator inthermal power plant,resulting in the bus voltage loss accident,find out the cause of thefailure of the generator voltage transformer in thermal power plant,and put forwardcountermeasures to prevent the recurrence of similar accidents,to ensure the safe andreliable operation of power supply system in thermal power plant.As the core departmentof power supply,thermal power plant is responsible for the power supply task of thewhole production area.In the production process,in order to ensure the technology,quality and safety of products,it also has high requirements on the power supply system,so the normal operation of thermal power plant plays a pivotal role in the production.Generator voltage transformer is a very important measuring equipment in power system,secondary circuit failure directly threatens the safe operation of unit,and will cause greatinfluence on the normal power supply of thermal power plant.In order to ensure thereliable operation of the power supply system,it is of great significance to find out thecause of the failure,to carry out a thorough rectification of the hidden dangers,and tosum up experience,so as to prevent similar accidents from happening again.Therefore,this paper carries out a special investigation,analysis and test on this problem,andstrives to reduce the occurrence of generator voltage transformer circuit fault throughtrans formation.Facts have proved that by carefully analyzing the crux of the problem anddealing with it,generators and power supply systems can operate safely and reliably,aswell as ensure the normal operation of production.Keywords:The power system;The generator;Voltage transformer;The fault第Ⅱ页目录第1章绪论1.1研究背景…1.2本文研究的主要内容、目标与方法…1第2章火力发电厂…22.1火力发电厂工作原理…22.2电压互感器原理与作用…42.2,】事故现象…62.2.2事故原因与分析…7结论…12致谢…参考文献……14第Ⅲ页