英译汉翻译资料.ppt

* An electric power systems consists of three principle divisions: 13.8kV 220kV 800kV 500kV 1000kV 10kV 35kV 220v 380v Chapter 1 Basic concept of electric power system 1) Interconnection has increased to the point where power is exchanged between the systems of different companies as a matter of routine. 互联已经发展到这样的程度，不同电力公司系统之间的电能交换已经成为惯例。 2) This provides a high degree of structural redundancy that enables the system to withstand unusual contingencies without service disruption to the consumers. 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。 3) The equipments which form an electric system are arranged depending on the manner in which loads grows in the area and may be rearranged from time to time. 构成电力系统的设备，其布局取决于当地的负荷增长方式，并且随时可能重 新调整。 Chapter 2 Electric power generation 1) In this regard，it is worth mentioning that thermal generating stations using gas or coal take from 4 to 8 hours to start up , while nuclear stations may take several days. 在这点上，值得注意的是:采用天然气或煤炭的热电厂启动需要4-8小时，而核电站会花费几天时间。 2)The synchronous machine as an AC generator driven by a turbine is the device which converts mechanical energy to electrical energy, in powers ranging up to 1500 MW.. 作为由涡轮机驱动的交流发电机，同步电机是将机械能转化为电能的设备， 其功率范围高达1500MW。 Chapter 2 Electric power generation 1) Most stations have ratings between 200MW and 1500 MW so as to attain the high efficiency and economy of a large installation. 大多数电站的额定值在200MW和500MW之间，以实现大站的高效经营运行。 2)Hydropower plants can cause low dissolved oxygen levels in the water, a problem that is harmful to riverbank habitats. 水电厂会导致水中的氧气溶解度降低——（这是）一个对岸边生存环境有害的问题。 Chapter 3 Power generation stations 1) Spillways adjacent to the dam are provided to discharge water whenever the reservoir level is too high. 临近水坝的泄洪道用来在水库水位太高时泄水。 2) Often the diagram is simplified further by omitting the complete circuit through the neutral and by indicating the component parts by standard symbols rather than by their equivalent circuits.. 单线图往往被进一步简化，简化的途径包括：忽略经过中线的完整电路， 用标准符号表示电路组成