发电厂直流电源改造分析

针对淮北发电厂一、二期直流电源系统运行中长期存在的问题，该文分析了直流电源系统改造的必要性，详细说明了高频开关电源的性能特点、高频开关电源模块工作原理及PWM工频变换技术，并介绍了淮北发电厂利用高频开关电源对原直流电源的典型改造方案。

Analysis of DC Power Supply Reform in Power Plant

In allusion to the problems in the operation of the DC power supply systems of the first-stage and second-stage pro＂ jects at Huaibei Power Plant, which have existed for a long time. This paper analyzes the necessity of transform for the DC power supply systems, elaborates the performance characteristics of the high frequency switching power supply, working principle of the high frequency switching power supply module and PWM power frequency conversion technology with the introduction of the typical transform scheme for the original DC power supplies by using the high frequency switching power supply at Huaibei Power Plant.