电力翻译节选

In Sumatera system, a 275kVAC line to connect Northern and Southern part of Sumatera is planned to be in operation by 2010. It is indicated that large scale of mine mouth power plants can be constructed in east Sumatera. For that reasons, a link of mine mouth in south and central Sumatera should be considered to anticipate power transfer to the north and export to Malaysia in the future.

在苏门答腊系统中，一条电压为275千伏连接苏门答腊南北地区的输电线将在2010年之前投入营运，即意味着可在苏门答腊东部地区兴建一座大型矿口发电厂。鉴于此，一条连接苏门答腊南部及中部矿口的输电线可将电力输送到北部地区，日后也可以出口到马来西亚地区。

The basic form of an HVDC converter consists of a 6 pulse bridge using thyristor valves. A thyristor valve may contain many individual thyristors assembled in series and parallel combination to provide the required voltage and current ratings. The most commonly used converter configuration is 12 pulse arrangements which is a combined unit of two 6 pulse converters.

高压直流输电变流器的基本构成部分为采用晶闸管阀运行的六脉波桥式变流器。晶闸管阀可能包含若干组装在串联和并联组合中的单个晶闸管，从而提供所需电压和额定电流。使用最广泛的变流器结构为十二脉波装置，由两组六脉波变流器组成。

The converters naturally produce harmonics. The higher the converter pulse number, the lower the harmonics produced. However, studies have shown that 12-pulse arrangement is the optimal configuration for HVDC transmission based on the overall cost, including the cost of converters and the filters.

变流器会自然产生谐波。变流器脉波频率越高，所产生的谐波次数越低。然而，研究表明，按所有成本（包括变流器和滤波器成本）计算，十二脉波装置是高压直流输电装置的最佳配置。