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随着高速公路不断修建和投入运营,其配套设施的建设任务也急剧增加,交通机电系统作为高速公路运营管理是必不可少的附属系统。而机电系统的运行,依靠的是供配电系统提供的电能支持。高速公路供电系统由变配电所、供电线路和各种用电设备等组成。供配电模式一经确定,就决定了高速公路供配电系统内部用电负荷的供电可靠性和供电质量。可靠、安全、灵活、经济电力供给是衡量一条高速公路质量的重要因素。本文通过三明永宁高速公路供配电方案的分析,对中压供电与集中式低压配电相结合的高速公路供配电方式进行探讨。.
As the highway continues to be built and put into operation, the construction tasks of its ancillary facilities also increase sharply. The transportation electromechanical system is an indispensable subsidiary system as an expressway operation and management. The operation of the electromechanical system relies on the power supply provided by the power distribution system. Expressway power supply system by the substation, power lines and a variety of electrical equipment and other components. Once the power supply and distribution mode is determined, it determines the power supply reliability and power supply quality of the internal power load of the highway for power distribution system. Reliable, safe, flexible and economical power supply is an important factor in evaluating the quality of a freeway. Through the analysis of power supply and distribution scheme of Sanming Yongning Expressway, this paper discusses the power supply and distribution modes of expressway combining medium voltage power supply with centralized low voltage power distribution. .