Optimal coordination of water-energy nexus resources in metropolitan water resource network for approaching carbon neutrality

Abstract

The water resource industry has been recognized for its substantial electricity consumption. Moreover, recent movements towards RE100 membership aimed at managing water resources have begun to expedite the technical demands for a novel coordination method. This study proposes the involvement of various types of electricity markets from the perspective of operators within a metropolitan water resource network consisting of flow and treatment capacity of each facility in each MWPF. The proposed method considers not only individual water treatment facilities, but also a comprehensive management approach for the network based on detailed interdisciplinary methods. The treatment capacity and deliverability of small hydropower generators (SHGs) at each node was linearized in piece-wise formation based on experimental and actual specifications provided by the corporation. The analysis is not based on social scientific context but purely con-ducted from the technical perspectives considering the treatment processes that have been neglected in the previous research. Participation in the economic demand response was simulated to avoid compromising the intraday procurement requirements of water resources. The variability mitigation by the renewable energy resources in the network was simulated to be less than 7 % during the entire scheduling period. The economic feasibility of REC markets with multipliers was improved by 58.47 % through appropriate hourly coordination, considering market settlement. The profit from participation in electricity market was simulated to be increased by 165.98 % and 174.32 % in S3 and S4.