Optimal Energy Management of an Isolated Microgrid Including Uncertainities of Renewable Energy Source

Abstract

In today’s world, the need for microgrids in bolstering the current utilities in dispatching adequate power to meet
the load demand, has risen. In certain circumstances, the customer demand may or may not be met due to
unavoidable faults in the power system stemming either from the microgrid or the utility. These power interruptions
can have a major impact on the customer’s expenditures or on the overall costs of the utility/microgrid. There arises
a need to assess the various factors involved, to solve this problem.Recent significant increase in vitality costs and
the effects of government, administrative bodies, and ecological issues have brought about a requirement for
progressive improvement in the operating reliability and advancement in the energy system.This can be done by
studying the Estimated Total Cost, Unmet load, amount of interruptions, the number of microturbines (Distributed
generators) required etc. and cost of each. The transformation of these cost values into interruption costs can be
used to assess the reliability benefits of alternative configurations.The Distributed energy resources (DER) employed
in this project include PV module, wind turbine generator, micro-turbine and fuel cells with spinning reserves and
battery bank acting as an Energy Storage Devices (ESS). Assuming a sample demand load curve, our project strives
to achieve energy balance after an uncertainty occurs in a standalone microgrid. Analysis will be carried out to
calculate the Estimated Total Cost (ETC) using IBM ILOG CPLEX Optimization Studio.