Hadamard-product-based method and device for generating branch on-off short circuit standard exceeding suppression strategy

Abstract

The invention discloses a method and a device for generating a branch breaking short circuit standard exceeding suppression strategy based on hadamard-product. The method comprises the following steps: determining a node admittance matrix of short circuit current; when equipment is adopted for switching on or switching off, a switching-off branch set for short circuit suppression is obtained; performing branch supplementation and limitation on the cut-off branch set to form an effective cut-off dominant control branch set; in the node admittance matrix, a class II column admittance matrix is extracted; constructing a branch on-off control participation matrix according to the class-II column admittance matrix, and performing hadamard-product on the participation matrix and the class-II column admittance matrix to generate a class-II short circuit suppression admittance substitution matrix; replacing admittance values in the node admittance matrix with element values of a replacement matrix to form a power grid short circuit calculation matrix cluster; and sequentially taking matrixes from the power grid short-circuit calculation matrix cluster to carry out short-circuit current calculation, obtaining corresponding short-circuit qualified measures, and realizing decision-making of short-circuit suppression measures. The problem that a machine selects short circuit suppression measures to form a strategy search space is solved.

Description

Technical field [0001] This application involves the theory of artificial intelligence knowledge. The theory is used in the field of power grid simulation technology, which is specific to a method and device based on the Hadamard-PRODUCT-based branching to inhibit short-circuit over-the-standard strategies. Background technique [0002] The short -circuit over -circuit of the power system will have a serious impact on the power grid and the surrounding surroundings. The expression form includes: large current generates huge power, causing mechanical damage to equipment; huge short -circuit currents pass through the conductor, which will cause great heat in a short period of time, causing overheating equipment and damage; The sudden change in the system power distribution caused a large area of ​​voltage, which brought great damage to users; the lack of synchronization between the power plants that were running in side of the side of the side, destroying the stability of the syste...

AI Technical Summary

Problems solved by technology

This experience-led method is very important, but under the circumstances of diversified power supply, diversified transmission forms, and increased electrical connection density, the disadvantages gradually appear: the operation mode is ever-changing, and the safety measures listed in experience are limited. Troubled by combinatorial explosions, it is difficult for humans to bear the huge workload and time investment, and they are forced to use sampling instead of the selection mode of enumeration, resulting in a limited number of proposed measures and verification operation modes

When the power grid structure changes and the operation changes, the workload of manual trial and error is large, and the degree of automatic processing is low. As a result, on the one hand, it is difficult to provide effective short-circuit suppression measures within the specified time; Determining the optimality of the measures has the disadvantage of missing better short-circuit suppression measures

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