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Integrated energy system day-ahead optimized scheduling method and system considering dynamic characteristics of networks

A technology of integrated energy system and dynamic characteristics, which is applied in the field of integrated energy system optimization scheduling method and system field, and can solve the problem of rare operation optimization of electric-gas-heat interconnection system.

Active Publication Date: 2018-09-28
SHANDONG UNIV
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Problems solved by technology

[0006] However, the above studies only focus on two types of energy-flow coupling, and there are not many studies on the operation optimization of electricity-gas-heat interconnection systems that take into account the dynamic characteristics of the heat network and the gas network.

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  • Integrated energy system day-ahead optimized scheduling method and system considering dynamic characteristics of networks
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  • Integrated energy system day-ahead optimized scheduling method and system considering dynamic characteristics of networks

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Embodiment Construction

[0057] The present invention is described in detail below in conjunction with accompanying drawing:

[0058] 1 Analysis of network dynamic characteristics

[0059] 1.1 Dynamic characteristics of heating network

[0060] The dynamic characteristics of the heating network are mainly reflected in the time delay and temperature loss during hot water transmission. On the one hand, due to the slow speed of hot water transmission, the temperature change at the inlet diffuses slowly to the outlet, so part of the heat energy will be stored in the hot water pipes. On the other hand, due to the difference in temperature between hot water and its surrounding environment, heat loss will occur during its flow, resulting in a drop in temperature. In this paper, the node method is used to model the dynamic characteristics of the heating network.

[0061] (1) Transmission delay

[0062] First, the temperature loss of hot water during transmission is not considered. figure 1 is the longitu...

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Abstract

The present invention discloses an integrated energy system day-ahead optimized scheduling method and system considering the dynamic characteristics of networks. The method comprises: performing modeling and analysis on dynamic characteristics of the heating network and the gas network, and mining the corresponding energy storage capacity under the corresponding dynamic characteristics of the heating network and the gas network; establishing an integrated energy system day-ahead optimized scheduling model considering dynamic characteristics of both the gas network and the heating network, andlinearizing and solving the model; and finally, through the simulation calculation, analyzing the influence of the dynamic characteristics of the pipe network on the optimal operation of the system, the dynamic characteristic interaction relationship between different networks and the potential of collaborative optimization, wherein the obtained results prove the necessity and feasibility of considering the dynamic characteristics of the networks in the integrated energy system.

Description

technical field [0001] The present invention relates to the technical field of electric-gas-thermal integrated energy system interconnection, in particular to a method and system for optimizing scheduling of integrated energy systems considering the dynamic characteristics of the network. Background technique [0002] With the increasingly serious energy and environmental problems, in order to improve the overall efficiency of energy utilization and the ability to accommodate renewable energy, there is an increasingly urgent need for multi-type energy interconnection integration and complementary integration. In addition, with the development of various energy conversion equipment (such as combined heat and power (CHP), gas turbines, power-to-gas, etc.), the coupling effect of various forms of energy in production, transmission, consumption, etc. is becoming stronger and stronger. . Therefore, the research on the operation optimization of Integrated Energy System (IES) incl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/04G06Q50/06
CPCG06Q10/04G06Q10/0631G06Q50/06
Inventor 王成福梁军
Owner SHANDONG UNIV
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