Electromechanical transient coupling simulation method, device and equipment for gas-electric combined system and medium

By building sub-models and coupling interface models of power systems and natural gas systems, electromechanical transient coupling simulation is carried out, and the problem of the existing technology inability to accurately simulate the response of gas-electric combined system is solved, and accurate simulation and efficient calculation of gas-electric combined system are achieved.

CN119692238APending Publication Date: 2025-03-25STATE GRID JIANGSU ELECTRIC POWER CO LTD RESEARCH INSTITUTE +1
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Patent Information

Application Number
CN202411814625.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The existing electromechanical transient simulation models of power systems cannot accurately reflect the time scale characteristics of natural gas systems and gas engine power generation systems, and fail to fully consider the coupling relationship between the power system and the natural gas system, and cannot accurately simulate the true response of the gas-electric joint system in the event of failure or dynamic changes.

Method used

By obtaining power system data and natural gas system data, a power system sub-model and a natural gas system sub-model are built, and a coupling interface model is built to convert and interact the data between the power system and the natural gas system, and electromechanical transient coupling simulation is performed until the simulation is completed.

Benefits of technology

It can accurately simulate the electromechanical transient response of the gas-electric combined system under various operating conditions, including the frequency and voltage fluctuations of the power system, as well as the pressure and flow changes of the natural gas system. It is suitable for gas-electric combined systems of different sizes, and improves the simulation calculation speed while ensuring simulation accuracy.

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Abstract

The invention relates to the technical field of electric power system simulation, in particular to an electromechanical transient coupling simulation method, device, equipment and medium for a gas-electric joint system.The method comprises the steps that electric power system data and natural gas system data are obtained, and an electric power system sub-model and a natural gas system sub-model are constructed respectively; constructing a coupling interface model, and performing data conversion and interaction; initializing the power system sub-model and the natural gas system sub-model until simulation is completed; the simulation result is analyzed, and the frequency recovery characteristic and the voltage stability of the power system and the pressure and flow adjusting conditions of the natural gas system under the fault condition are determined; and verifying the accuracy of the model according to the operation data or physical experiment data of the actual gas and electricity connection and system, and adjusting and optimizing the model. According to the method, the electromechanical transient response of the pneumatic-electric combined system under various working conditions can be accurately simulated, and the simulation calculation speed is increased on the premise of ensuring the simulation precision by optimizing the algorithm and the model structure.
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