Demand response based microgrid's economic dispatch

Abstract

The development of energy management tools for next-generation Distributed Energy Resources (DER) based power plants, such as photovoltaic, energy storage units, and wind, helps power systems be more flexible. Microgrids are entities that coordinate DERs in a persistently more decentralized fashion, hence decreasing the operational burden on the main grid and permitting them to give their full benefits. A new power framework has emerged due to the integration of DERs-based microgrids into the conventional power system. With the rapid advancement of microgrid technology, more emphasis has been placed on maintaining the microgrids' long-term economic feasibility while ensuring security and stability. The objective of this research is to provide a multi-objective economic operation technique for microgrids containing air-conditioning clusters (ACC) taking demand response into account. A dynamic price mechanism is proposed, accurately reflecting the system's actual operational status. For economic dispatch, flexible loads and air conditioners are considered demand response resources. Then, a consumer-profit model and an AC operating cost model are developed, with a set of pragmatic constraints of consumer comfort. The generation model is then designed to reduce the generation cost. Finally, a microgrid simulation platform is developed in MATLAB/Simulink, and a case is designed to evaluate the proposed method's performance. The findings show that consumer profit increases by 69.2% while ACC operational costs decrease by 18.2%. Moreover, generation costs are reduced without sacrificing customer satisfaction.

Energy optimization management of microgrid using improved soft actor-critic algorithm

“…Energy supply and management have always been one of the significant challenges faced by modern society. With the rapid development of renewable energy and the widespread adoption of distributed energy sources, microgrids (MGs) has garnered extensive attention as an emerging paradigm in energy systems (Saeed et al, 2023;Kheiter et al, 2022). MGs, often incorporating renewable energy sources and energy storage, have emerged as viable solutions to address the chal-lenges of conventional centralized power systems (Ahmad et al, 2023;Mostefa et al, 2023).…”