Micro-grid distributed cooperative control method and system considering economic dispatching

The invention discloses a micro-grid distributed cooperative control method and system considering economic dispatch, and the method comprises the steps: constructing a communication network between distributed power supplies in a micro-grid, carrying out the measurement to obtain the voltage, current and frequency of each distributed power supply, and carrying out the calculation to obtain active power and reactive power; carrying out micro-grid voltage and frequency mean value estimation, and obtaining a voltage adjustment signal and a frequency adjustment signal of micro-grid voltage recovery and frequency recovery through PI control; calculating to obtain active micro-increasing cost and reactive marginal cost corresponding to each distributed power supply, and obtaining a voltage adjusting signal and a frequency adjusting signal for realizing economic dispatching of the micro-grid based on the communication network; and the voltage frequency adjustment signals are respectively used for voltage and freque