Modeling of Integrated Energy System of Offshore Oil and Gas Platforms Considering Couplings Between Energy Supply System and Oil and Gas Production System

Abstract

The integrated energy system (IES) of offshore oil and gas platforms is a complex energy intensive system, which is composed of energy supply system (ESS), oil and gas production system (OGPS), diesel oil supply system (DOSS) and oil storage and transportation system (OSTS). Among them, ESS and OGPS are closely coupled and show a trend on stronger coupling due to implementation of new technologies, such as waste heat recovery and associated gas utilization. In order to reduce the operating cost and carbon emissions, an optimal operation model that considers their couplings is proposed. Firstly, based on the standardized matrix modeling method, subsystems inside OGPS and ESS are modeled individually and then combined, through which the model of the whole IES can be built. Then, representing this model as constraints, the optimal operation model of offshore oil and gas platforms' IES is proposed, together with constraints representing operational limitations of subsystems. Particularly, in the proposed model, couplings on heat, associated gas and electrical energy between OGPS and ESS are modeled, and hybrid energy storage system (HESS) is considered in modeling ESS, which is able to coordinate associated gas storage (AGS) and electricity storage (ES) in the optimal operation. INDEX TERMS Integrated energy system, offshore oil and gas platforms, standardized matrix model, optimal operation.

Low-Carbon Optimal Configuration of Integrated Electricity and Natural Gas Energy System with Life-Cycle Carbon Emission

“…Currently, numerous studies on IES have been carried out in terms of the quantification of multi-energy resources [7,8], planning and operation optimization [9][10][11] as well as the comprehensive evaluation of energy systems [12]. Regarding the modeling of multi-energy resources, the coupling model between the energy supply system and the oil and gas production system is proposed in [13], and a reliability model of IES considering multienergy correlation is established in [14], which presents a novel analytical method to model the dependent multi-energy capacity outage states and their joint outage probabilities for its reliability assessment. Moreover, a flexibility evaluation method considering the impact of multi-energy coupling is proposed in [15], which provides support for making full use of flexible resources and improving the operational economy.…”