Smart development of community energy storage in power grid with PV units

Abstract

Energy storage (ES) system has become an inevitable element in smart distribution network (DN) due to massive deployment of renewable energy resources (RERs). ES is capable of solving a number of operational problems in distribution network due to intermittent characteristic of the RERs while providing numerous other benefits such as ancillary services, peak reduction, reliability improvement etc. Among various type of RERs, community level distributed photovoltaic (PV) is the fastest-growing power generation system due to its technological advancement; declining price and better fit into consumer area. Thus, impact of intermittent PV output power is more severe in community level where the consumption is happening. Hence, the idea of bringing ES close to the source of the problem has led to the development of concept called community energy storage (CES). Most available studies claimed that the deployment of CES is more effective in alleviating the impact of high PV penetration while offering more benefits than the centrally located substation storage if properly planned and effectively controlled. However, comprehensive review found that very scant analytical evidences were shown to prove the statement. Besides, currently CES allocation is determined based on maximizing specific benefit while neglecting others benefits of its deployment. Very scarce previous works provided a complete allocation