ENERGY MANAGEMENT SYSTEM, POWER DEMAND PLAN OPTIMIZATION METHOD AND POWER DEMAND PLAN OPTIMIZATION

摘要

PROBLEM TO BE SOLVED: To provide an energy management system capable of correcting the demand plan of energy in a micro grid at high speed, by reducing the load of calculation, and to provide a power demand plan optimization method and a power demand plan optimization program.SOLUTION: A micro grid G includes a renewable energy generator 5, a storage battery 9 and a load 6, and is connected with an external power system 2. An energy management system 20 includes a demand plan calculation unit for calculating a demand plan, by solving the optimization problem of an objective function that is a non constraint problem, and a demand plan correction unit for correcting a demand plan, by using a sensitivity matrix obtained from a quadratic approximation function in the vicinity of an already-acquired optimum solution of the objective function.SELECTED DRAWING: Figure 1