电力专业英语阅读和翻译部分课后长句.doc

WORD完美整理版 范文范例 参考指导 第一章 第一节 电力系统基本结构 Part 1 Basic Construction of Electric Power System Basic Concepts of Electric Power System 电能是一种理想的能力形式，便于传输和使用，而且很清洁，对环境和大气无污染，因此自被发现以来，电能发展迅速并且利用广泛。电能的 产生、输送和消耗过程就在这一被称为电力系统的整体化系统中实现。 Electricity is an ideal energy form, which is convenient to deliver and use, and is clean without polluting our environment and atmosphere. The generation, delivery and consumption of electricity are realized in an integrated system which is called electric power system or power system. 一个电力系统包括三个基本部分：发电系统、输电系统和配电系统，如图1-1所示。 An electric power system consists of three principal divisions: power generation, power transmission system, and power distribution systems, as shown in Fig.1.1 图1-1电力系统的三个基本部分 用户从电力系统取用的所有电能都是在某种形式的电厂（或者称作电站）中产生的。发电是整个电能利用过程的第一环节。 All the electricity the consumers take from the power system is generated in a power plant, or called power station, of some kind. Power generation is the first stage of the whole progress of the utilization of electric energy. 输电系统连接发电和配电系统，并经过网络互连通向其他电力系统。配电系统在执行电压变换和开关功能的变电站将所有单个负荷接连到输电 线路。 Transmission systems are the connecting links between the generation plants and the distribution systems and lead to other power systems over interconnections. A distribution system connects all the individual loads to the transmission lines at the substations which perform voltage transformation and switching functions. 地处负荷区的附近的小型电厂，通常直接连接到中压输电系统或配电系统。 Small generating plants located near the load are often connected to the subtransmission or distribution system directly. 通常，在输电系统水平上形成相邻电力系统间的互联。 Interconnection to neighboring power systems are usually formed at the transmission system level. 因而整个电力系统包括多个电源和若干层次的输电网络。这提供了高度的结构化冗余，使系统能够承受罕见的意外事故而不会中断对用户的供 电。 The overall system thus consists of multiple generating sources and several layers of transmission networks. This provides a high degree of structural redundancy that enables the system to withstan