Abstract
The micro turbine (MT) is scheduled to catch up wind power uncertainty and thus lead to great variations in the state of natural gas system (NGS). To meet this challenge, firstly, a dynamic model of gas-electricity combined system with wind power is established, the dynamic model of NGS is based on differential equations, so that it can connect with MT model easily, and a droop control module is added to the Rowen's MT model, so that the improved model can adjust the output power according to the scheduling instructions. Then, a stability control method based on the variable regulation ratio gas pressure regulator is proposed, the essence of this method is to reduce the variation of natural gas storage in the gas pipeline, so as to ensure the stability of pressure. The simulation results show that the dynamic model is correct and the stability control method is effective.
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