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KEYWORD: power grid; strategy of gas power station; communication; synchronous generator; grid connected inverter ABSTRACT: The Chinese economy is developing rapidly, the demand for energy is getting more and more intense. With the development of coal mine, the utilization of gas is getting more and more important, and the numerous gas generating units will be connected to the power grid. Due to the characteristics that the unit capacity of gas generator is small, the gas safety requirements is high, and gas power stations is sensitive to grid disturbances, gas power stations which are connected to distribution network will produce a correspond impact on the grid. Therefore, it is important to study the control strategy of gas power station. In view of three kinds of operation modes of gas power generation stations in China, the island and anti-island effect of the distributed gas power stations connected to distribution network are discussed. Then the three kinds of anti-Island efficiency strategies are proposed for gas power generation, which are based on communication, synchronous generator and grid connected inverter, and their advantages and disadvantages are analyzed and compared. The three kinds of anti-Island benefit strategy have important reference and guidance for the design and operation of gas power stations in China. The model of mine gas generatorIgnore the rectifier loss and assume the output electromagnetic power of the rectifier equal to the magneto alternator. Based on the relation of rotate speed and power, the output electromagnetic torque of the generator Ignore the damping of the generator, the rotor motion formation of the generator:Therefore the simplified model integrates magneto alternator and rectifier is shown in Figure.1. Figure.1 The simplified model integrates magneto alternator and rectifierInternational Forum on Energy, Environment Science and Materials (IFEESM 2015)