A review of power management and stability issues in microgrid

Demand of power is growing day by day but non-conventional sources which are primary sources of energy are not only limited but also the pollutants released from them cause pollution. Microgrid system is one of the best solutions of feeding electrical demand and checking pollution as most of the distributed energy resources (DER) used in the microgrid are environment friendly. Microgrid also maintains reliability of electricity in the system. Use of renewable generators like photo voltaic (PV), wind etc. provide power using conventional sources with less pollution, but their implementation in grid causes several complications like circulating current, voltage harmonics, reduction in storage life, over voltage and over current in transient etc. Apart from that other challenges like active-reactive power sharing, current sharing, power management among renewable sources and high penetration of renewable energy are required to be focused to increase the handling and working capability of microgrid. The paper proposes an extensive literature survey on these severe problems in microgrid system and enlists the different work going on to eliminate the particular type of problems.