一种基于广域量测的电容式电压互感器运行状态评估方法

An Assessment Method for Ｒunning State of Capacitor Voltage Transformer Based on Wide － area Measurement

摘要:

变电站电压互感器是满足变电站各节点电压可观的必要设备，数量众多、分布广泛且结构封闭，难以经济可 靠地实现在线监测与实时状态评估。通过分析电容式电压互感器采集偏差模型，对采集偏差进行分解、聚类，提出一 种基于广域电网运行数据驱动的电容式电压互感器运行状态评估方法。

Abstract:

Voltage transformer is the necessary equipment to satisfy the considerable voltage of each node in the substation． It is difficult to realize on － line monitoring and real － time state assessment economically and reliably because of its large number，wide distribution and closed structure． Capacitor voltage transformers are widely designed and applied in the newly － built substations over 220 kV through the country． By analyzing the acquisition bias model of capacitor voltage transformers，the acquisition bias is decomposed and clustered，and an assessment method for running state of capacitor voltage transformers is proposed which is driven based on wide － area grid operation data．