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Three-level coordination anticipated fault screening and sorting method

A technology of predicting faults and three-level coordination. It is applied in the fields of instruments, data processing applications, resources, etc., and can solve the problems of low fault screening accuracy and low efficiency.

Pending Publication Date: 2019-07-02
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing technologies consider the use of a single index to screen and sort the expected fault set, and do not consider the situation of missing selection or multiple index screening, resulting in low accuracy and low efficiency of fault screening

Method used

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  • Three-level coordination anticipated fault screening and sorting method
  • Three-level coordination anticipated fault screening and sorting method
  • Three-level coordination anticipated fault screening and sorting method

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Embodiment Construction

[0095] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are 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 shall fall within the protection scope of the present invention.

[0096] A method for screening and sorting expected faults with three levels of coordination, the method includes the following steps:

[0097] Step 1. Obtain various operation measurement data and fault data when the distribution network is faulty, and establish a fault historical measurement database.

[0098] The operation measurement data when the distribution network fails includes the fault measurement database constructed by PMU measurement data, SCADA data and distribution network operation data at the time of the fault.

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Abstract

The invention relates to a three-level coordination anticipated fault screening and sorting method, which comprises the following steps of: 1) obtaining various operation measurement data and fault data when a power distribution network fails, and establishing a fault history measurement database; 2) according to the fault data provided in the step 1), establishing a branch parameter screening andsorting index, a sensitivity-based load margin screening and sorting index and a synchronous phasor-based voltage stability screening and sorting index respectively, sequentially carrying out branchparameter screening and sorting, load margin screening and sorting and voltage stability screening and sorting in a coordinated progressive screening mode, and achieving rapid and accurate screening of anticipated faults; and 3) outputting serious anticipated faults influencing safe and stable operation of the system. Compared with the prior art, mutually coordinative and rapid system fault set screening and sorting are achieved.

Description

technical field [0001] The invention relates to a method for screening and sorting expected fault sets of a distribution network, in particular to a method for screening and sorting expected faults with three-level coordination. Background technique [0002] With the continuous development of distribution network construction and transformation, the addition of distributed power sources, electric vehicles and a large number of new components has increased the risk of failure, and the expansion of the grid scale has increased the scope of failure, which has greatly affected the distribution network. Safe and stable operation, which in turn restricts the development of large-scale interconnected distribution networks. This is because there are many types of faults, and the severity of the faults is different, which makes the protection device of the distribution network itself unable to take corresponding protection measures in time. In this regard, it is urgent to propose a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/00G06Q50/06
CPCG06Q10/06393G06Q10/20G06Q50/06
Inventor 田书欣刘舒李昆鹏方陈符杨包海龙苏向敬
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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