通信交流供电系统一般由以下组成主用交流电源（一般是市电，特殊情况下可用风电等），备用交流电源（油机发电机组或者燃气发电机组等）。
高雄捷运交流供电系统 Alternative Current Power Supply
本篇论文第一章研究了城市铁路供电系统(包括直流牵引供电系统和交流供电系统)的构成和运行方式。
In the first chapter, studying the structure and running performance include the DC traction power supply and ac power supply system.
在飞机电气系统中，随着电力电子装置的广泛应用，交流供电系统的电能质量问题受到越来越多的关注。
The electronic equipment is widely applied to aircraft electric power system, so power quality problems in AC main power supply system cause more and more attention.
文中介绍了通信基站的电源系统，包括交流供电系统、直流供电系统和接地系统，论述了等电位在基站建设中的重要性。
In the paper, an electrical power system of base station is introduced in detail, including AC power supply system, DC power supply system and earthing system.
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