Robust optimisation scheduling of CCHP systems with multi‐energy based on minimax regret criterion

Abstract

The intermittency of renewable energy and load uncertainty in the combined cooling, heating, and power (CCHP) system operation is considered in this study. The authors propose a robust optimisation scheduling method to attenuate the disturbance of uncertainty, and derive the day-ahead scheduling decision under two strategies including electrical load tracking and thermal load tracking. Also, the budget of uncertainty is introduced to alleviate the conservatism of robust optimisation. Moreover, a minimax regret non-linear formulation is constructed to describe the performance of the system and different realisations of uncertainty. To solve the problem, the authors develop a hybrid solution method, which is composed of a two-stage Lagrangian relaxation iterative algorithm and an improved cross entropy algorithm. Simulation results demonstrate that the minimum of the maximum regret can be obtained, and the conservatism of robust optimisation is significantly reduced by properly setting the level of budget of uncertainty. As a result, the validity and effectiveness of the proposed robust optimisation model and algorithm are confirmed.

A Three-Stage Coordinated Optimization Scheduling Strategy for a CCHP Microgrid Energy Management System

“…The CCHP microgrid involves many devices, including microgas turbines, absorption refrigerators, electric refrigerators, waste heat recovery devices, heat exchangers, and distributed renewable energy [18,19]. Figure 1 shows the system structural diagram of a CCHP microgrid.…”

Environmental and Economic Operation of Wind-PV-CCHP-Based Energy System Considering Risk Analysis Via Downside Risk Constraints Technique

“…An information gap decision theory technique has been used in a CCHP-based microgrid in [32] to cope with market tariff uncertainty. A combination of a robust technique and a hybrid approach has been provided in [33] to tackle the renewable energy source outputs and demands uncertainties in a CCHPbased microgrid. A robust technique has been utilized in a CCHP-based microgrid in [34] to deal with the uncertainties of the renewable energy outputs and electrical, heating, and cooling demands.…”

Day-Ahead Hierarchical Steady State Optimal Operation for Integrated Energy System Based on Energy Hub

“…An EH integrates a variety of energy converters, such as compressors, CHP, heat exchangers, CCHP, heat recovery devices, transformers, microturbines, power-electronic devices, gas boilers, fuel cells, and other equipment, where the inputs and outputs of multiple energy flow are usually available [12,18,19]. From a system point of view, an EH is considered a unit where multiple energy flows can be converted, conditioned, and stored.…”

“…From a system point of view, an EH is considered a unit where multiple energy flows can be converted, conditioned, and stored. This EH is also able to provide the basic features, such as input and output, conversion, and diversified storage of different energy forms [7,10,[17][18][19].…”