In the emergency repair of electric power caused by sudden natural disasters, the reliability and stability of emergency power supply vehicles largely determine the speed and efficiency of restoring power supply. Based on the performance test and reliability study of 18 diesel-powered vehicles in Guangzhou Power Supply Company Limited, the typical defects of emergency power supply equipment and the causes of the faults are analyzed. It provides technical support for the technical standards and the maintenance guidance of emergency power supply equipment, and greatly improves the emergency capability of rapid power recovery under extreme natural disasters. It has improved the emergency response capability of rapid re-powering under extreme natural disasters, shortened the repair time, and significantly reduced the loss and impact of extreme natural disasters on the power system and the entire national economy.
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