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Abnormal remote diagnosis method of equipment based on telemetry

A diagnostic method and technology of moving equipment, applied in the field of diagnosis, to achieve the effect of improving the level

Active Publication Date: 2021-06-29
STATE GRID ZHEJIANG ELECTRIC POWER +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, a dilemma arises

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  • Abnormal remote diagnosis method of equipment based on telemetry

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Embodiment Construction

[0048] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0049] In this technical solution, through the calculation and analysis of recent telemetry historical data, problems that can be found by EMS but ignored due to performance considerations can be found. The details of this embodiment are as follows:

[0050] Through the deep inspection method, remote diagnosis can be made for the abnormality of telemetry abnormal equipment. Diagnosis items can be divided into the following aspects: diagnosis of no change in telemetry, diagnosis of overrunning of telemetry, diagnosis of unbalanced power flow of main transformer busbar, diagnosis of abnormal temperature rise of transformer.

[0051] 1. Telemetry does not change diagnostics

[0052] The system identifies the active power, reactive power and current telemetry point data of the three-side windings, lines, and loads of the main transform...

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Abstract

The invention relates to a remote diagnosis method for abnormality of equipment based on telemetry, relating to a diagnosis method. At present, the real-time performance and the eradication of jumps in the grid automation system cannot be balanced. The invention includes remote measurement non-change diagnosis, remote measurement over-limit diagnosis, main transformer bus current unbalance diagnosis, and transformer temperature rise abnormality diagnosis. This technical solution solves the problem of finding abnormalities in the equipment without affecting the operation performance of the EMS by means of an external system; the in-depth inspection automatically conducts data identification on the power grid operation data on a regular basis, searches for problematic information, and uses charts, etc. way to show it. Monitoring information analysts can analyze the current information obtained through in-depth inspections, and can also query historical inspection information and form year-on-year and chain-to-month comparison results, so as to discover potential problems and hidden safety hazards in power grid operation; the in-depth inspection function makes up for The supervisor monitors the deficiencies and omissions in the normal work, so as to further improve the level of safe operation of the power grid.

Description

technical field [0001] The invention relates to a diagnosis method, in particular to a remote diagnosis method based on telemetry abnormality equipment abnormality. Background technique [0002] The telemetry data provided by the power grid automation system (EMS) must have the two most basic indicators of real-time and correctness, so as to meet the requirements of monitoring and dispatching personnel to grasp and accurately adjust the working conditions of the power grid in a timely manner. [0003] The so-called real-time performance means that after the state of the primary equipment in the power grid changes, the relevant information can be reflected to the dispatch center immediately, and the longest delay of the lag should generally not exceed 3 seconds; the so-called correctness refers to the state of all primary equipment The information must fully conform to the current actual working conditions of the power grid: for remote signaling data, there must be no misoper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J13/00G01R31/08
CPCG01R31/088H02J13/0006H02J3/00H02J2203/20
Inventor 钱建国李英施正钗朱炳铨姚仲焕王晓陈家乾赵玉成杨兴超莫建国莫莉晖魏美兰江雯姬袁楚楚藏怡宁
Owner STATE GRID ZHEJIANG ELECTRIC POWER