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Power grid anticipated fault set automatic generating method and system

A technology of predicting fault sets and predicting faults, which is applied to electrical components, circuit devices, AC network circuits, etc., can solve the problems that the effect of predicting fault analysis needs to be improved, and achieve the effect of comprehensive static security analysis of power grid and high practicability

Active Publication Date: 2014-07-23
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, the current predicted faults only include the faults of the same-rod lines, while a large number of faults of non-same-rod lines are not included. The effect of predicted fault analysis needs to be improved

Method used

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  • Power grid anticipated fault set automatic generating method and system
  • Power grid anticipated fault set automatic generating method and system
  • Power grid anticipated fault set automatic generating method and system

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The described embodiments are only some, not all, embodiments of 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.

[0026] The method for automatically generating the expected fault set of the power grid of the present invention comprises the following steps:

[0027] (1) Set the expected fault depth of the expected fault set and the power flow transfer threshold of the fault impact domain;

[0028] (2) Divide the power grid;

[0029] (3) Carry out N-1 predicted failure analysis for each partition: add each expected breaking device and the branch whose power flow transfer exceeds the power flow transfer threshold before and after breaking into the fault...

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Abstract

The invention relates to a power grid anticipated fault set automatic generating method and system. The method includes the following steps that first, an anticipated fault depth of an anticipated fault set and a tide transferring threshold value of a fault influence domain are set; second, a power grid is divided into various partition areas; third, N-1 anticipated fault analysis is performed on each partition area, each anticipated switching-off device and branches with tide transfer exceeding the tide transferring threshold value before and after switching off are added to the fault influence domain, N-1 fault influence domains are formed, all the N-1 fault influence domains are analyzed, the overlapped fault influence domains are combined, and N-2 anticipated fault sets are formed; fourth, according to the anticipated fault depth, the N-m fault influence domains are circularly calculated, and accordingly, a plurality of anticipated fault sets are generated; fifth, the multiple anticipated fault sets in all the partition areas are gathered, and multiple anticipated fault sets of a whole network are formed. The method and system not only are favorable for improving the analysis effect of anticipated faults but also effectively control the scale of the multiple fault sets, the calculating efficiency is high, and the using effect is good.

Description

technical field [0001] The invention relates to the technical field of power grid security analysis, and more specifically, to a method and system for automatically generating predicted fault sets of a power grid. Background technique [0002] In order to improve the security and reliability of the power grid, it is necessary to conduct a security analysis of the power grid. Security analysis mainly includes static security analysis and dynamic security analysis. At present, the main method of static security analysis is to analyze the state of the power grid by setting and evaluating the expected fault set, so as to provide the basis for taking corresponding control measures. It can be seen that the expected fault set plays an important role in the static security analysis of the power grid, and its validity directly affects the effect of the static security analysis. [0003] Due to the large number of grid components and the complexity and diversity of grid faults, curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06H02J3/00
Inventor 李传栋林韩吴文宣
Owner STATE GRID CORP OF CHINA
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