电力专用通信网是随电力系统的发展需要逐步形成和发展的。它主要用来缓解公网发展缓慢造成的通信能力不足和填补公网难以满足的一些电力部门特殊的通信需求。 电力通信是现代电力系统不可缺少的重要组成部分。组成电力系统的各部分，如发电、送电、变电、配电和用电通常都是分 The power communication network is gradually formed and developed with the development of power system. It is mainly used to ease the communication network caused by the slow development of the public network and to fill some of the public sector can not meet the special communication needs of the power sector. Power communication is an indispensable part of modern power system. The components of a power system, such as power generation, transmission, substation, distribution, and electricity, are usually sub-components