混合激励下变压器用电工材料特性及损耗测量研究

Characteristics and Loss Measurement Study of Electrical Materials for Transformers under Mixed Excitation

电网架构日趋复杂化,电力电子设备的增多,尤其是直流输电系统的发展,使电力设备激励工况由单一分量向基波、谐波、直流分量混合激励转变。而电工材料选型手册中提供的参数是在标准工况下测得,混合激励作用下,材料电气参数发生改变,电工材料中损耗测量方法随之发生改变。设计镜像补偿测量方案,精准测量混合激励工况下,铜板、硅钢叠片中的损耗数据,为模拟仿真模型建立和求解提供数据参照标的。

The increasing complexity of power grid architecture and the increase of power electronic equipment,especially the development of DC transmission system,make the excitation condition of power equipment change from a single component to the mixed excitation of fundamental,harmonic and DC components.While the parameters provided in the selection manual of electrical materials are measured under standard working conditions,under mixed excitation,the electrical parameters of the materials are changed,and the loss measurement method in electrical materials is changed accordingly.A mirror compensation measurement scheme is designed to accurately measure the loss data in copper plates and silicon steel laminates under mixed excitation conditions,which provides a data reference for simulation modelling and solving.