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Electric-thermal coupled integrated energy system optimal current calculation method

A technology that integrates energy systems and optimal power flow. It is applied to AC networks with the same frequency from different sources, and can solve problems such as lack of consideration of power flow distribution in thermal pipe network systems.

Active Publication Date: 2020-02-04
STATE GRID CORP OF CHINA +2
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Problems solved by technology

The shortcomings of the existing technology are mainly that the modeling of thermal system equipment is relatively simple, and the lack of consideration of the power flow distribution of the thermal pipe network system

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  • Electric-thermal coupled integrated energy system optimal current calculation method
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  • Electric-thermal coupled integrated energy system optimal current calculation method

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Embodiment Construction

[0137] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0138] The optimal power flow calculation method of the electrothermal coupling integrated energy system based on the generalized inverse method proposed by the present invention, such as figure 1 As shown, the method includes the following steps:

[0139] (1) Establish a steady-state power flow model of the electrothermal coupled integ...

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Abstract

The invention relates to an electric-thermal coupled integrated energy system optimal current calculation method based on a generalized inverse method and belongs to the field of power / integrated energy system operation control technologies. According to the method, firstly, a steady-state model of a regional electric-thermal coupled integrated energy system is established; then, a multi-target optimal current model of the regional integrated energy system is established based on a generalized inverse matrix theory, wherein multiple targets include minimum energy utilization cost and minimum power distribution system network loss; and solving is performed iteratively based on a Newton Raphson method, and information transmission between a power system and a thermodynamic system is realizedthrough coupling equipment operating power conversion. Through the method, operating conditions of the regional integrated energy system can be accurately reflected, the method has good numerical stability and convergence, the optimization process is an optimization process of a feasible solution, a more optimal feasible solution can be obtained in each step, calculation can be stopped anytime according to the actual situation, and the method is suitable for real-time system optimization, scheduling and application.

Description

Technical field [0001] The invention relates to an optimal power flow calculation method for an electrothermal coupling integrated energy system based on a generalized inverse method, and belongs to the technical field of power energy system operation control. Background technique [0002] Energy Internet is the deep integration and development of a new generation of energy systems and Internet technologies, and it is also the focus and innovation frontier of the current domestic and international academic and industrial circles. On the basis of the energy Internet, the State Grid Corporation of China also proposed the "Ubiquitous Power Internet of Things", which clarified that the power system is the core and backbone, and various distributed resources are gathered together to form a regional integrated energy system and establish interaction with the upper-level grid . Research and construction of a regional integrated energy system is a key factor in the implementation of my ...

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Application Information

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IPC IPC(8): H02J3/06
CPCH02J3/06
Inventor 王罡侯磊杨超张靖苏琨夏天张正文姚大伟
Owner STATE GRID CORP OF CHINA
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