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Power failure event-based power distribution network cable variable relationship anomaly diagnosis method, device and system

An abnormal diagnosis and distribution network technology, applied in circuit devices, measuring devices, electrical components, etc., can solve problems such as restricting the construction process of first-class distribution networks, low reliability analysis accuracy, and inconsistent line-to-line relationship.

Active Publication Date: 2021-02-09
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manually maintained Power Management System (PMS) mainly relies on on-site inspections by grassroots employees. Due to factors such as complicated equipment, long time-consuming, and difficult inspections, it is difficult to obtain the correct relationship between medium-voltage distribution network lines and transformers. , so that the relationship between the actual site and the PMS midline substation is inconsistent, which will lead to business pain points such as large potential safety hazards in line maintenance, high calculation errors in medium-voltage line loss rates, and low reliability analysis accuracy, which seriously restricts the construction of a first-class distribution network.

Method used

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  • Power failure event-based power distribution network cable variable relationship anomaly diagnosis method, device and system
  • Power failure event-based power distribution network cable variable relationship anomaly diagnosis method, device and system
  • Power failure event-based power distribution network cable variable relationship anomaly diagnosis method, device and system

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Embodiment 1

[0086] An embodiment of the present invention provides a method for diagnosing an abnormality of a distribution network line change relationship based on a power outage event, including the following steps:

[0087] Step (A) is based on the obtained power data of the distribution transformer, generating a set of distribution transformers for historical power outages;

[0088] In a specific implementation manner of the embodiment of the present invention, the specific implementation process of the step (A) is:

[0089] In the energy management system (this system is a system existing in the prior art), the distribution transformers to be processed are screened out based on the power information of the distribution transformers, and the power measurement data stored in the existing system corresponding to the distribution transformers are read and Its basic device information. For a distribution transformer M j Connected to line f, distribution transformer M j The measured da...

Embodiment 2

[0125] Based on the same inventive concept as that of Embodiment 1, the embodiment of the present invention provides a device for diagnosing abnormality of distribution network line change relationship based on power outage events, including:

[0126] A generating unit, configured to generate a set of historical power outage distribution transformers based on the obtained power data of the distribution transformer;

[0127] The first calculation unit is used to obtain busbars and distribution transformers near it based on the latitude and longitude information of the poweroutage distribution transformer set in the poweroutage distribution transformer set, and the voltage measurement data of the nearby busbars;

[0128] The second calculation unit is used to calculate the correlation coefficient index between the power outage distribution transformer and its nearby busbars, and find out the suspected busbars;

[0129] The first screening unit is used to screen out all lines cor...

Embodiment 3

[0161] Based on the same inventive concept as that of Embodiment 1, the embodiment of the present invention provides a system for diagnosing abnormality of distribution network line change relationship based on power outage events, including a storage medium and a processor;

[0162] The storage medium is used to store instructions;

[0163] The processor is configured to operate according to the instructions to execute the steps of the method according to any one of Embodiment 1.

[0164] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but n...

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Abstract

The invention discloses a power failure event-based power distribution network cable variable relationship anomaly diagnosis method, device and system. The method comprises steps of generating a historical power failure distribution transformer set based on obtained power data of distribution transformers; obtaining nearby buses and distribution transformers based on longitude and latitude information of the power failure distribution transformers in the power failure distribution transformer set; calculating a correlation coefficient index of the power failure distribution transformer and a nearby bus to find out a suspected subordinate bus; screening out all lines under the suspected subordinate bus corresponding to the power failure distribution transformer; calculating power failure distribution transformer number proportion indexes corresponding to all lines under the suspected subordinate bus, and seeking a power failure distribution transformer number proportion index thresholdvalue; and screening out suspected subordinate lines of the power failure distribution transformer based on the threshold value, and finding out the power failure distribution transformer with the wrong line change relationship and the suspected subordinate lines of the power failure distribution transformer. The method is simple in calculation, and can help an operator to discover an abnormal line change relation distribution transformer in time and recommend a subordinate line of the distribution transformer.

Description

technical field [0001] The invention belongs to the field of abnormal diagnosis of medium-voltage distribution network line-transformation relationship, and specifically relates to a method, device and system for abnormal diagnosis of distribution network line-transformation relationship based on power failure events, which are suitable for medium-voltage distribution network. Background technique [0002] The line-to-line transformation relationship of the medium-voltage distribution network is the relationship between the medium-voltage bus, the distribution transformer load, and the tie switch. It describes the power supply path from the medium-voltage bus to the distribution transformer load. The manually maintained Power Management System (PMS) mainly relies on on-site inspections by grassroots employees. Due to factors such as complicated equipment, long time-consuming, and difficult inspections, it is difficult to obtain the correct relationship between medium-voltage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/55G06F17/11H02J3/00H02J13/00
CPCG01R31/55G06F17/11H02J3/00H02J13/00H02J2203/20Y04S10/50
Inventor 陈烨陈锦铭刘伟袁宇波焦昊叶迪卓然于聪聪宋伟伟史曙光郭雅娟崔晋利张超李岩
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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