Abstract
The coordination of energy carriers in energy systems has significant benefits in enhancing the flexibility, efficiency, and sustainability characteristics of energy networks. These benefits are of great importance for multi-carrier energy networks due to the complexity of obtaining optimal dispatch, considering the non-convex nature of their energy conversion. The current study proposes a robust operation model for the coordination of multi-carrier systems, including electricity, gas, heat, and water carriers concerning thermal energy storage technology. Thermal energy storage is for storing extra heat generated by combined heat and power (CHP) plants and boilers in time intervals with low heat demand on the system and discharging it when required. Energy network operators should have the capability to manage uncertain energy loads to study the impact of load variation on the decision-making process in network operation. Accordingly, this study employs an information gap decision theory (IGDT) method to model the uncertainty of the power demand in optimal system operation. By applying the IGDT approach, the operator of the energy system can use the appropriate methodology to obtain a robust optimal operation. Such a modeling approach helps the operator to make suitable decisions about probable variations in power load. The introduced model is applied in a test system for evaluating the performance and effectiveness of the introduced scheme.
Highlights
In 2013, Presidential Policy Directive 21 (PPD-21) introduced the energy section as a critical element, considering its role in supplying necessary functions across all fundamental infrastructures
This study presents an information gap decision theory (IGDT)-based robust operation model for multi-carrier energy networks that considers the role of thermal storage facilities in managing the heat generation schedule of the Combined heat and power (CHP) plant, and the heat load supply of the system is investigated
This study presented an IGDT-based robust operation of multi-carrier energy networks with power, gas, heating, and water carriers considering the thermal energy storage system
Summary
In 2013, Presidential Policy Directive 21 (PPD-21) introduced the energy section as a critical element, considering its role in supplying necessary functions across all fundamental infrastructures. The authors in [15] have proposed a robust model for dealing with the uncertainty of power market prices when managing CHP networks. The authors have proposed a steady-state energy flow for multi-carrier networks, including integrated power and gas systems in [20]; interconnected power and heating systems in [21]; and combined power, gas, and heating systems in [22]. The authors in [29] proposed a multi-objective scheme for the two-stage optimal operation of combined power and gas systems with emerging technologies, such as power to gas plants and demand-side management. This study presents an IGDT-based robust operation model for multi-carrier energy networks that considers the role of thermal storage facilities in managing the heat generation schedule of the CHP plant, and the heat load supply of the system is investigated. The introduced robust model has been implemented in test multi-carrier networks for the evaluation of the performance of the presented scheme
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