这是变压预试试验的计算软件，适合在电力行业的高压试验工作者。-This is software of Transformer test,which is fit to the people working in high power

配电网变压器有载无弧调压，采用电力电子器件。不错的。-With no-load power transformer arc voltage, using power electronic devices. Nice.

In order to solve the power quantity problem of negative sequence current and harmonic current in high-speed railway, railway static power conditioner (RPC) was adopted. RPC contains two inverters which are connected with each other by sharing a DC c