Steady-state analysis method of electric-natural gas area comprehensive energy system

Abstract

The invention discloses a steady-state analysis method of an electric-natural gas area comprehensive energy system. The method comprises the steps of (1) performing modeling and solving on a natural gas system of the electric-natural gas area comprehensive energy system; (2) performing node pressure-load sensitivity analysis on the natural gas system; (3) based on natural gas system information and energy interaction information, structuring energy coupling link modeling and energy conversion analysis which take an energy concentrator as the core; (4) performing steady state solving on a power system; (5) structuring a steady-state analysis comprehensive solving model of the electric-natural gas area comprehensive energy system to obtain the influence led by network state change of the natural gas system. Aimed at an operational scenario of 'power determined by gas', the steady-state analysis method of the electric-natural gas area comprehensive energy system explores the influence of the network state change of the natural gas system on the natural gas system and the area comprehensive energy system and provides a certain theoretical foundation for energy mutual aid and mutual influence analysis in an energy Internet.

Description

technical field [0001] The invention relates to the fields of energy Internet, integrated energy system, natural gas system, and smart grid, and in particular to a steady-state analysis method for an electric-natural gas regional integrated energy system. Background technique [0002] Energy is the foundation of national development. In recent years, with the continuous promotion of concepts such as energy Internet and comprehensive energy systems, the development of energy systems has shown a trend of diversification, intelligence, and informationization. In the regional comprehensive energy system composed of electricity, natural gas and thermal systems, the energy is closely coupled and complementary, which can realize the cascade utilization and collaborative optimization of energy. Combining the supply and demand characteristics of different forms of energy, fully considering their synergy and mutual influence is the key to improving energy utilization efficiency in an ...

AI Technical Summary

Problems solved by technology

[0004] There are at least the following shortcomings and deficiencies in the existing technology: At present, researchers in related fields mainly focus on the inter-regional level of integrated energy systems. In addition, related research ignores the state characteristics of natural gas networks and assumes them to be stable of

The limitation of these methods is that the above studies have relatively little discussion on the regional-level integrated energy system with power distribution system (with the characteristics of three-phase unbalanced power flow) and gas distribution system (with the characteristics of low-voltage natural gas network) and close energy coupling. At the same time, due to the application of technologies such as Power to Gas (P2G) technology, the network status of the natural gas system will change (such as the change of natural gas quality and the introduction of new gas injection points), and the traditional analysis methods are no longer applicable. limitations

Images