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Flexible power distribution network electric energy transaction method and device for intelligent energy storage soft switch

A technology of electric energy trading and soft switching, which is applied in the direction of circuit devices, AC networks with energy trade/energy transmission authority, and AC networks with the same frequency from different sources, etc., to achieve the effect of realizing operational efficiency and improving transaction profits

Active Publication Date: 2022-02-01
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, domestic and foreign research on multi-regional flexible interconnection distribution networks mainly focuses on the formulation of operation optimization strategies for multi-terminal intelligent energy storage soft switches. How to realize the improvement of operating profits of intelligent energy storage soft switches in power trading needs further research

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  • Flexible power distribution network electric energy transaction method and device for intelligent energy storage soft switch
  • Flexible power distribution network electric energy transaction method and device for intelligent energy storage soft switch
  • Flexible power distribution network electric energy transaction method and device for intelligent energy storage soft switch

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Embodiment Construction

[0094] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. 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.

[0095] The retail package pricing method considering price-based...

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Abstract

The invention provides a flexible power distribution network electric energy transaction method for an intelligent energy storage soft switch, and the method comprises the steps: taking the lowest electric energy cost and the minimum node voltage deviation of each interconnected power distribution network region in a flexible interconnected power distribution system as a target, and forming a cost function of a time period t with respect to transaction power through power flow analysis, obtaining a power flow constraint and a safe operation constraint; carrying out distributed market clearing calculation among the interconnected distribution network areas based on a non-cooperative game, and determining clearing prices and transaction active power of lower-layer end-to-end electric energy transactions in each time period; performing upper-layer active power transaction adjustment and internal energy storage link output strategy solution to obtain an active power scheduling result of the intelligent energy storage soft switch; each interconnected power distribution network region obtaining the optimal reactive power output of the intelligent energy storage soft switch according to a cost function; and the power distribution network area performing actual purchase and sale power settlement with a superior power grid according to the final transaction result. The operation cost of each region can be reduced, and the operation profit of the intelligent energy storage soft switch is improved.

Description

technical field [0001] The invention relates to the technical field of planning and evaluation of urban power grids, in particular to a flexible distribution network power trading method for intelligent energy storage soft switches. Background technique [0002] A large number of new elements such as distributed power sources and electric vehicles have put forward higher requirements for the operation of the distribution network. In order to meet the diversified and customized power demand on the user side, the traditional distribution network will gradually develop from a traditional radial structure to a Highly flexible and controllable flexible interconnection structure. Each distribution network area interconnected through multi-terminal intelligent soft switches will have multiple energy interaction paths and support accurate and controllable power transmission, laying a physical foundation for the multi-regional flexible interconnection of distribution network power t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/48H02J3/50H02J3/06H02J3/32
CPCH02J3/008H02J3/48H02J3/50H02J3/06H02J3/32H02J3/0075H02J2203/10H02J2203/20Y04S10/50
Inventor 李娟徐晶张梁张章崔荣靖迟福建李桂鑫李鹏田振冀浩然宋关羽
Owner STATE GRID TIANJIN ELECTRIC POWER
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