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An Optimal Power Flow Calculation Method for Electrothermal Coupling Integrated Energy System

An integrated energy system and optimal power flow technology, applied in the direction of AC networks with the same frequency from different sources, can solve the problems of lack of consideration of the power flow distribution of the thermal pipe network system, and achieve good numerical stability and convergence

Active Publication Date: 2021-05-14
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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  • An Optimal Power Flow Calculation Method for Electrothermal Coupling Integrated Energy System
  • An Optimal Power Flow Calculation Method for Electrothermal Coupling Integrated Energy System
  • An Optimal Power Flow Calculation Method for Electrothermal Coupling Integrated Energy System

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Embodiment Construction

[0137] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0138] The optimal power flow calculation method of the electrothermal coupling comprehensive 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 an electrothermal ...

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Abstract

The invention relates to an optimal power flow calculation method for an electrothermal coupling comprehensive energy system based on a generalized inverse method, and belongs to the technical field of electric power / comprehensive energy system operation control. This method first establishes a steady-state model of a regional integrated energy system coupled with electricity and heat, and then establishes a multi-objective optimal power flow model for a regional integrated energy system based on the generalized inverse matrix theory. The loss is minimized and solved iteratively based on the Newton-Raphson method. The information transfer between the power system and the thermal system is realized through the conversion of the operating power of the coupling equipment. The method proposed by the invention can accurately reflect the operation status of the regional comprehensive energy system, and has good numerical stability and convergence. The optimization process is a process of optimizing the feasible solution, and a better feasible solution can be obtained at each step. The calculation can be stopped at any time according to the actual situation, which is suitable for real-time system optimization and scheduling applications.

Description

technical field [0001] The invention relates to a method for calculating the optimal power flow of an electrothermal coupling comprehensive energy system based on a generalized inverse method, and belongs to the technical field of electric energy system operation regulation. Background technique [0002] The Energy Internet is the deep integration and development of the new generation of energy systems and Internet technology, and it is also the focus and innovation frontier of the current academic and industrial circles at home and abroad. On the basis of the Energy Internet, the State Grid Corporation has proposed the "Ubiquitous Power Internet of Things", which defines the power system as the core and backbone, and various distributed resources gather together to form a regional comprehensive energy system and establish interaction with the superior power grid . The research and construction of regional integrated energy systems is a key factor in the implementation of m...

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Application Information

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Patent Type & Authority Patents(China)
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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