Multi-network steady-state energy flow analysis method and device for electricity-gas comprehensive energy system

Abstract

The invention discloses a multi-network steady-state energy flow analysis method and device for an electricity-gas comprehensive energy system. The multi-network steady-state energy flow analysis method comprises the following steps: respectively carrying out topology analysis on an electrical network and a natural gas network in a to-be-analyzed electricity-gas comprehensive energy network, and determining an electrical network equation and a corresponding electrical system variable, a natural gas network equation and a corresponding natural gas system variable, an electricity-gas coupling element equation and a corresponding additional variable; and solving a nonlinear algebraic equation set comprising a power network equation, a natural gas network equation and a coupling element equation to obtain the value of the electrical system variable, the value of the natural gas system variable and the value of the additional variable, wherein the value of the electrical system variable, the value of the natural gas system variable and the value of the additional variable form a steady-state energy flow of the to-be-analyzed electricity-gas comprehensive energy network. The multi-network steady-state energy flow analysis method and device for an electricity-gas comprehensive energy system are good in accuracy, low in calculation amount and high in calculation efficiency.

Description

technical field [0001] The invention relates to the technical field of electric-gas integrated energy system simulation technology, in particular to a method and device for analyzing steady-state energy flow in a multi-network of electric-gas integrated energy. Background technique [0002] Energy supply has become a key factor restricting the sustainable development of human society. In the regional integrated energy system, electricity and natural gas are converted into energy through coupling components such as gas turbines and compressors. The analysis and calculation of energy flow needs to consider the connecting branches and coupling components of the power network and natural gas fluid pipeline network. The steady-state energy flow analysis of this complex energy network involves the joint solution of multiple power and natural gas networks. At present, there is a lack of simulation analysis and calculation methods for large-scale multi-coupling systems that are suit...

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a method and device for analyzing the steady-state energy flow of multi-network electricity-gas integrated energy, so as to solve the problems of low efficiency and low precision of the current steady-state energy flow analysis method for integrated energy systems

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