Research on Control Strategy in Photovoltaic-Battery-Diesel Hybrid Micro-Grid

It is facing resource shortage and environmental pollution around the globe, until the emergence of new renewable energy technology has reinvigorated traditional techniques. Development of renewable energy generation in China needs the joint efforts of all social sectors from policy to technique. Distributed generation combining with battery applied in micro-grid relieves a problem of resource shortage, and ensures load operation when power grid fault urgently. In this paper, photovoltaic is described briefly first. Then photovoltaic-battery-diesel micro-grid is established according to the situation about geographical environment, what is more workflow of the system is analyzed. Control strategy is shown according to condition of micro-grid. At last, micro-grid containing distributed generation established in Liaoning Province is quantitative illustrated in economic benefit. Distributed generation is added into micro-grid enhance the reliability of micro-grid even power grid. That makes a contribution to resource and environmental problem.