A distribution system with distributed generators

energy storage systems and electric vehicles can be operated as an isolated microgrid and provide power supply to the interrupted loads in a short period after a fault-caused power supply interruption. However

as the output power of an intermittent energy source such as a wind turbine or a photovoltaic panel is generally fluctuant and stochastic

it is hardly possible to provide sustainable power supply to the power loads in the isolated island operating as a microgrid. Given this background

a strategy for short-period restoration of the isolated island considering the power output uncertainties of intermittent energy sources is presented. A restoration model for the isolated island with distributed generators

energy storage systems

electric vehicles and controllable loads is developed first

with the objective of providing continuous and stable power supply to the maximized amount of power load in a given period. The characteristics of different kinds of intermittent energy resources and their output capabilities are discussed next

and the controllable loads are employed to balance the power output fluctuations of these intermittent energy sources. Probabilistic models are utilized to describe the uncertainties of the predicted power outputs of the intermittent energy sources. The proposed restoration model is then transformed to a definite quadratic constrained integer programming one

and solved by the well-developed CPLEX solver. Finally

the proposed restoration strategy is verified by a modified IEEE 33-bus test system. This work is supported by National Basic Research Program of China (973 Program) (No. 2013CB228202)

National Natural Science Foundation of China (No. 51361130152

No. 51377005) and Zhejiang Key Science and Technology Innovation Group Program (No. 2010R50004).