张海平　柴宜　王琳琳　周贤培　刘忠祥

摘 要：变电站交直流一体化电源系统方案实现了多套站用电源系统蓄电池组的共用，多套电源系统的集中监控、集中管理，一套设备多种电源输出。因交直流一体化电源系统方案具有集成度高、管理简便等诸多优点，该方案已在国家电网公司全国各电压等级变电站得到广泛应用，南方电网公司也在逐步扩大应用范围。但多年以来交直流一体化电源系统所存在的标准化低、不同品牌器件兼容性差、维护成本高等问题一直未从根本上得到解决。交直流一体化电源系统一方面维护效率低、维护成本高，同时严重影响到了变电站的可靠运行。文章针交直流一体化电源系统所存在标准化程度低的问题，提出全模块化电源系统方案。

关键词：变电站；交直流一体化；全模块化；标准化通信

中图分类号：TM63 文献标志码：A 文章编号：2095-2945（2018）32-0180-03

Abstract： The scheme of integrated AC/DC power supply system for substation realizes the sharing of batteries in several sets of station power supply system， the centralized monitoring and centralized management of multiple sets of power supply systems， and the output of multiple power sources for one set of equipment. Because the integrated AC/DC power system has many advantages such as high integration and simple management， this scheme has been widely used in various voltage grade substations of the State Grid Corporation， and the Southern Power Grid Corporation is gradually expanding the scope of application. But for many years， the problems of low standardization， poor compatibility of different brand components and high maintenance cost have not been fundamentally solved in the integrated AC/DC power supply system. On the one hand， the integrated AC/DC power supply system has low maintenance efficiency and high maintenance cost； on the other hand， it seriously affects the reliable operation of the substation. In this paper， the problem of low standardization exists in the integrated AC/DC power supply system， and the scheme of fully modular power supply system is put forward.

Keywords： substation； integration of AC and DC； full modularization； standardized communication

引言

交直流一體化电源系统（下文简称：一体化电源）由站用交流电源、直流电源、通信电源、交流不间断电源构成，主要功能是为变电站提供各类稳定、可靠的电源。各个电源子系统共用一套蓄电池组作为后备电源，通过各类电源变换器将交流电源分配或变换为AC380V、AC220V、DC220V/110V、DC-48V这四种电压等级。为了保证系统正常运行，配置一体化电源监控系统对系统进行实时测量、控制。

1 常规一体化电源系统

一体化电源系统由空气开关、ATS（双电源自动切换装置）、交流接触器、高频开关电源模块（下文简称：充电模块）、调压硅链（选配）、蓄电池组、电力专用逆变器、DC/DC直流变换器、各类表计、监控系统、各类传感器、柜体等部分构成。……