The Development Of A Generalized Optimal Operating Strategy For A Hybrid Energy System

Abstract

Operating strategy in hybrid energy system is the allocation of energy sources based on availability to meet the load demand in an optimal way. It has to determine the flow of energy from the hybrid energy system sources to loads, charging, and discharging of storage systems such as battery, in such a way as to optimize the system performance by minimizing the operating cost. In the present work, a generalized algorithm for the optimal operation of hybrid energy system with any number of sources is proposed. The objective of the proposed algorithm is to maximize the availability of energy to the loads. In this algorithm, the loads are allocated based on priority. When the load cannot be met with the available sources and storage will lead to shedding of the non-priority loads. To validate the developed algorithm, a case study is carried out using load data collected from a typical village Palayapatti in India (Latitude: 10° 44′ 0′′ North, Longitude: 79° 6′ 0′′ East). A comparison is made between a system operated with the developed algorithm for optimal operating strategy and a system operated without the strategy. Hybrid energy system operating with the developed operating strategy has a shortage of 10% compared with the existing system, which is 11.7%. The results of the comparative study show the effectiveness of the developed algorithm.