换流变压器运行状态智能诊断分析评价系统研究

Research on Intelligent Diagnosis Analysis and Evaluation System of Operation Status of Converter Transformer

文中开发了换流变压器运行状态智能诊断分析评价系统,监测换流变压器运行状态并开展状态评估和故障诊断。换流变压器运行状态智能分析评价系统集成高频或超声局放、油气、温度、振动、铁心接地电流、负荷数据6类监测传感器,实现带电安装集中一体化管理。系统提出基于多参量的联合分析方法,建立了基于变压器自身结构参数和历史数据的热平衡模型、绝缘老化模型、过负荷模型、故障分类模型,可以实现变压器多源数据的融合研判,对变压器进行超前预警和全过程监测,提高变压器面对复杂电网运行工况的应对能力。

In this paper,the intelligent diagnosis analysis and evaluation system of operation status of converter transformer is developed to monitor the operation status and carry out status assessment and fault diagnosis of the con-verter transformer.The intelligent analysis and evaluation system of the operation status of the converter transformer integrates such six types of monitoring sensors as high frequency partial discharge,ultrasonic partial discharge,oil chromatogram(oil gas),temperature,vibration,grounding current of core and load data so to achieve live installation integrated management.The joint analysis method based on multiple parameters is proposed in this system and the models of heat balance,insulation aging,overload and fault classification based on transformer’s own structural pa-rameters and historical data.are set up,which can achieve fusion research and judgment of multi-source data of transformer,carry out advance warning and whole process monitoring of transformer and improve the ability of trans-formers to deal with complex operation conditions of power grid.