电力专业英语阅读与翻译 课件 13-Overvoltage and Lightning Shielding、14-Faults on Power System.pptx

电力专业英语(13)OvervoltageandLightningShielding参考教材：朱永强.电力专业英语阅读与翻译.机械工业出版社，2024-06

BasicConceptsofElectricPowerSystem1.Concretely,powersystemareoftensubjectedtoovervoltagesthathavetheirorigininatmosphericdischargesinwhichcasetheyarecalledexternalovervoltages,ortheyaregeneratedinternallybyconnectingordisconnectingthesystem,orduetothesystemfaultinitiationorextinction.尝试翻译1.Concretely,powersystemareoftensubjectedtoovervoltagesthathavetheirorigininatmosphericdischargesinwhichcasetheyarecalledexternalovervoltages,ortheyaregeneratedinternallybyconnectingordisconnectingthesystem,orduetothesystemfaultinitiationorextinction.生词adv.具体地concretelyn.消灭[除]extinction翻译具体地，电力系统常常遭受起源于大气放电的过电压，那种情况下称为外部过电压；或者（过电压）在内部产生，由于连接或断开系统，或是由于系统故障的产生和消除。

BasicConceptsofElectricPowerSystem说明that引导的定语从句修饰的主体是overvoltages。而inwhichcase引导的定语从句修饰的主体是整个that从句，其中whichcase指代that从句的具体内容，they指代overvoltages。在ortheyaregeneratedinternally中，they也指代overvoltages，而generated后面除了副词internally之外还有两个由or连接的介宾短语作为状语，分别以by和dueto开头。为了便于理解，该句子可以拆解为：Concretely,powersystemareoftensubjectedtoovervoltages;theovervoltageshavetheirorigininatmosphericdischarges;inthiscasetheyarecalledexternalovervoltages;orovervoltagesaregeneratedinternallybyconnectingordisconnectingthesystem;orovervoltagesaregeneratedinternallyduetothesystemfaultinitiationorextinction.

BasicConceptsofElectricPowerSystem2.Hence,withincreasingthesystem’soperatingvoltageapointisreachedwhentheswitchingovervoltagesbecamethedominantfactorindesigningthesystem’sinsulationuptoapproximately300kV.尝试翻译2.Hence,withincreasingthesystem’soperatingvoltageapointisreachedwhentheswitchingovervoltagesbecamethedominantfactorindesigningthesystem’sinsulationuptoapproximately300kV.生词n.主要因素dominantfactor翻译因此，随着系统运行电压提高，达到一点，此时操作过电压成为高达300kV左右的系统绝缘设计的主要因素。

BasicConcepts