Abstract: In order to cope with the problems of high volatility and weak anti-interference ability of distributed energy sources, it is significant to explore the integrated resource allocation of independent microgrids mainly powered by distributed energy sources. An integrated resource planning optimization model for independent microgrids containing interruptible loads is established, and the maximum calling capacity of interruptible loads and the installed capacity of distributed generation are optimized and planned at the same time, so as to better play the role of interruptible loads in independent microgrids and to improve the economics of microgrid operation; multiple linearization modeling methods, such as the aggregated unit model, are applied to linearize the established model, and the mixed-integer linear optimization method of the CPLEX solver is called to solve the linearized model. The correctness of the established model and the adopted methods are verified through simulation calculations, and the capacity planning strategies for controllable power sources and interruptible loads in independent microgrids with a high share of renewable energy are derived from the calculation results.

    Key words: independent microgrid; distributed generation; interruptible load; capacity optimization; mixed-integer optimization; aggregated unit