Abstract: In order to improve the operation economy of the distribution system with multiple industrial parks

and restrain the power fluctuation of the distribution-micro tie line，a multi-time scale optimization scheduling

strategy for the distribution system with multiple industrial parks was proposed based on the rolling optimization

principle. Firstly，the energy characteristics of industrial parks' internal equipment were analyzed and modeled.

Then a two-stage optimal scheduling model of distribution system with multiple industrial parks was constructed.

Among them，the interactive power between industrial parks and the distribution system as well as the operation

power of the equipment inside each industrial park and distribution system were coordinated by the day-ahead

optimization scheduling，the goal of improving the operation economy of the distribution system with multiple

industrial parks was achieved. The operating conditions of the internal equipment of industrial parks could be

corrected by the intra-day optimization scheduling，the fluctuation of the interaction power of the distributionmicro

tie line was suppressed. Finally，the effectiveness of the proposed model and method in improving the

operational economy of industrial parks and distribution systems and reducing the power fluctuation of the

distribution-micro tie line was verified by an example.

      Key words: industrial parks；multi-time scale；rolling optimization；distribution system