Economic Analysis of Micro Grid Operation in Energy Self-Balance Mode

Micro grid operation cost is the main obstacle of restricting its commercial operation. An effective way to solve this problem is the effective evaluation and the cost reduction by the evaluation. In the micro grid operation cost evaluation, there are not only basic factors, such as the cost of distributed generation and energy storage system, the sale contract, but also the grid backup cost. The indexes about power exchange are adopted to evaluate backup power cost. The data from a smart building micro grid is used to validate the method. It can be seen that the cost of energy, time of use price, and control strategy are of great significance for the operation cost, and good control policy can make the cost of micro grid reasonable.