POWER SUPPLY SYSTEM OF AC MICROGRID THREE PHASE,申请号KR20150163492-传众专利搜索

POWER SUPPLY SYSTEM OF AC MICROGRID THREE PHASE

申请公布号：KR101644522(B1)

申请号：KR20150163492

申请日期：2015.11.20

申请公布日期：2016.08.01

申请人：

KC COTTRELL CO., LTD.

发明人：KWON, KI NAM

分类号：H02J3/38

主分类号：H02J3/38

摘要：The present invention relates to a power supply system of an AC micro grid three phase load, to calculate a minimum operation condition of a diesel engine based on demand power and basic power of each line-to-line load in a standalone micro grid using distributed power sources which includes a new/regenerable energy source, an energy storage device, a diesel engine and a wind power generator, and make the basic power additionally supply power to a corresponding line-to-line load in real time with respect to a real time shortage of line-to-line demand power which consumes relatively a lot of power among the line-to-line demand power in comparison with the average supplied power. According to the present invention, the power supply system comprises: distributed power sources including a new/regenerable energy source, an energy storage device, a diesel engine and a wind power generator; an AC grid connecting the distributed power sources to a power system to supply power; and a power management system (PMS) detecting line-to-line demand power in each line-to-line load supplied from a power distribution device to control stability of the system. The PMS calculates output power of the diesel engine based on the line-to-line load detected in each line-to-line load and a maximum power to be supplied from the basic power, and makes the basic power supply a shortage of the corresponding line-to-line load which consumes relatively a lot of power in comparison with the power output distributed and supplied from the diesel engine among the line-to-line demand power.