A Radial Constraint Set Generation Method and Device for Power Distribution System Optimization Problems
A power distribution system and optimization problem technology, applied in the direction of circuit devices, electrical components, AC network circuits, etc., can solve problems such as unfavorable and fast solution, increase the scale of the original optimization problem, and cannot ensure the connectivity and radiation of the grid, and achieve Flexible adaptation, high solution efficiency, and the effect of reducing calculation time
Active Publication Date: 2022-06-17
ZHEJIANG UNIV +1
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However, in the case of multiple power sources in the power distribution system, the radial constraint set based on spanning tree cannot ensure the connectivity and radiation of the obtained grid; while the radial constraint set based on single commodity flow requires an increase in the number of power lines dummy power flow variables, which will increase the size of the original optimization problem, which is not conducive to the rapid solution
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[0026] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.
[0027] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and / or" as...
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The application discloses a method and a device for generating a radial constraint set for the optimization problem of a power distribution system. First, the original distribution network is simplified to obtain a simplified distribution network that does not contain faulty nodes, faulty lines, and nodes with degree 1; then, an undirected graph loop identification algorithm is used to find all possible existences in the simplified distribution network loops; then, impose constraints on each loop to ensure that all loops are disconnected; finally, design radial constraint sets for distribution system expansion planning, reconstruction and recovery problems to improve the original problem solution efficiency. Compared with the radial constraint set based on spanning tree and single commodity flow, the radial constraint set of power distribution system expansion planning, reconstruction and recovery problems designed in this application has higher computational efficiency, which is conducive to the efficient and efficient power distribution system. Flexibly adapt to increasingly complex operating environments.
Description
technical field [0001] The present application relates to the technical field of power systems, and in particular, to a method and device for generating radial constraint sets for power distribution system optimization problems. Background technique [0002] In order to facilitate the coordination of relay protection and reduce short-circuit current, the power distribution system generally operates in a radial topology. As the penetration rate of distributed generation resources increases, the increasingly complex operating environment requires the variability and flexibility of the distribution network. Radial constraints are the key constraints for optimization problems such as power distribution system expansion planning, reconfiguration, island operation and recovery. Finding an efficient radial constraint set can not only reduce the complexity of power distribution system optimization problems, reduce the solution time, but also improve the The flexibility of the distr...
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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 庞凯元文福拴王崇宇李鹏袁智勇于力徐全刘胤良
Owner ZHEJIANG UNIV