Security of Supply in Gas and Hybrid Energy Networks

Abstract

Reliable energy supply becomes increasingly complex in hybrid energy networks, due to increasing amounts of renewable electricity and more dynamic demand. Accurate modeling of integrated electricity and gas distribution networks is required to quantify operational bottlenecks in these networks and to increase security of supply. In this paper, we propose a hybrid network solver to model integrated electricity and gas distribution networks. A stochastic method is proposed to calculate the security of supply throughout the networks, taking into account the likelihood of events, operational constraints and dynamic supply and demand. The stochastic method is evaluated on a real gas network case study. The calculated security of supply parameters provide insight into the most critical parts of the network and can be used for future network planning. The capabilities of the coupled hybrid energy network simulation are demonstrated on the real gas network coupled to a simplified electricity network. Results demonstrate how combined simulation of electricity and gas networks facilitate the control design and performance evaluation of regional hybrid energy networks.

A Grey-System Theory Approach to Assess the Safety of Gas-Supply Systems

“…As a result, the lower the risk of the given event occurrence, the higher the value determined from Equation (10). The degree of a relationship obtained can thus be referred to, as events are prioritised and areas in need of improvement are indicated.…”

“…Rational preventive maintenance decreases the occurrence likelihood of potential failures, [9]. Subsequently, it reduces the risk of supply disruptions [10,11], as is true for all other industrial-and Energies 2022, 15, 4240 2 of 13 service-supply sectors. Less frequent pipe-failures and disruptions in supply distribution obviously improves the profitability of the supply process, [12][13][14].…”

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“…At the same time, this plays a vital role in helping to achieve the "double-carbon" goals in the whole energy supply chain [3][4][5]. In order to carry out the green and "double-carbon" transformations in the energy industries, in addition to national policy supports and sufficient funds, it is necessary to accurately assess the "double-carbon" and environmental-protection situations of each node in the energy supply chain so as to put forward the transformation strategy [6,7].…”