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高速公路建成投入营运后,电力供给是一个非常重要的课题、供电的安全、可靠和经济是确保高速公路安全运行、提高经济效益的重要环节。电力事故、供电中断将给高速公路营运的收费、监控、通信、通风、照明系统造成管理混乱,严重影响高速公路的正常运行,给国民经济造成重大损失。高速公路的传统供电方式是沿路按需要供电点就近接电,由于我省地处高山丛林地带,高速公路多数在山区穿越,就近接电的电源少,又多数为农村小水电供电,供电可靠性差,
After the expressway is completed and put into operation, the power supply is a very important issue. The safety, reliability and economy of power supply are the important links to ensure the safe operation of the expressway and increase the economic efficiency. Electricity accidents and interruption of power supply will cause chaos in the management of charging, monitoring, communication, ventilation and lighting systems of expressway operation, seriously affecting the normal operation of expressway and causing heavy losses to the national economy. Because the province is located in the jungle of high mountains, most of the expressways are traversed in the mountainous areas. The nearby power supply is small, and most of them supply electricity to the rural small hydropower. The power supply reliability is poor ,