Distributed energy resource comprehensive utilization system and method used for natural gas station

The invention discloses a distributed energy resource comprehensive utilization system and method used for a natural gas station. The system comprises a natural gas compressor set, a heat exchanger, a water processor, a hot water storage tank, a secondary heat exchanger, a water feeding cooling device, a circulating water pump, a connecting pipeline, an adjusting valve and other main devices. A large amount of heat energy can be generated in the compressing process, fed water of the heat exchanger is processed to be soft water through the water processor, after temperature raising, the water enters the hot water storage tank, and heat exchanging is performed on the soft water and return water, used for heat supplying, of the secondary heat exchanger for the heat supplying. The redundant part further can drive a water boiling device to provide living drinking boiling water or living hot water through the secondary heat exchanger, the compressor cooling water after secondary heat exchanging enters the water feeding cooling device again so that the water can be cooled to a normal temperature, and water feeding conditions of cooling water is achieved. The system uses indirect cooling heat energy for heating the cold water in the compressing process, the secondary heat exchanging is performed on the water with raised temperature, so that comprehensive utilization of the energy is achieved, the energy utilization rate of the system is improved, and energy cost is reduced.