Abstract

HOKKAIDO a northern island of Japan has highpotentials of Solar and Wind energies. However, HOKKAIDOElectric Power Company (HEPCO) declares that by increasingRenewable Energy (RE) power such as Photovoltaic and Windgeneration (hereafter PV and Wind), they cannot interconnectto the grid because of interconnection limitation and havingsurplus power in the grid. In this paper, for RE surplus powermanagement, we suggest two solutions. The first solution is toconvert RE surplus power to another type of energy whichdivided into two different methods. First, convert RE surpluspower to 100% heat. Second, convert RE surplus power to 50%heat, 40% hydrogen and 10% electric cars. For this purpose, weuse the Advanced Energy System Analysis Computer tool called“EnergyPLAN” to estimate RE surplus power in HOKKAIDOfuture energy system. Then, we calculate and compare theconversation economic and environmental performances. Thesecond solution is to transfer RE surplus power to connectedmulti-area networks. For this reason, we design load frequencycontrol (LFC) in smart grid model of IEEE 30 bus test system inMATLAB/SIMULINK to give such ability to transfer powerfrom one area to another. Finally, we compare both solutionseconomical and environment performances.