电厂变压器套管绝缘性能在线监测技术的研究

Research on Online Monitoring Technology for Insulation Performance of Transformer Bushing in Power Plant

电厂变压器是厂内最为核心的电气设备,套管是变压器的附件组成单元,是高压母线和变压器之间的桥梁。套管安全运行,对电厂至关重要。如果套管绝缘性能出现故障,会导致电厂电力系统停运,甚至会使变压器发生重大事故。本文对电厂变压器套管绝缘性能在线监测技术进行了研究,介绍了传统离线监测技术和在线监测技术,给出了套管绝缘性能在线监测系统的设计框架,并对硬件和软件的实现方案进行了设计,实现了套管绝缘性能的实时在线监测,对保证套管安全运行具有重要意义。

The power plant transformer is the most core electrical equipment in the power plant.The bushing is the accessory unit of transformer and the bridge between high voltage bus and transformer.The safe operation of bushing is very important for power plant.If the bushing insulation performance fails,the power system of the power plant may be shut down,and even the transformer may have a major accident.The paper studies the online monitoring technology of the power plant transformer bushing insulation performance,introduces the traditional offline monitoring technology and online monitoring technology,gives the design framework of online monitoring system of bushing insulation performance,and designs the implementation scheme of hardware and software,realizes the real-time online monitoring of bushing insulation performance,which is of great significance to ensure the safe operation of bushing.