Method for rapidly judging wiring error of power distribution transformer monitoring terminal

A technology to monitor terminal, wiring errors

Active Publication Date: 2014-06-25
安徽中鑫继远信息技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unclear identification of the primary equipment or errors in the primary line itself, the correct wiring is often not possible, resulting in incorrect information reflected by the terminal. It is often necessary to arrange line personnel after the equipment is installed and it is obviously unreasonable to judge through the information of the master station. After going to the scene and using the phase sequencer for many times, the correct wiring was found out
In addition to the waste of manpower required for secondary construction, construction personnel must also be able to use phase sequencers and have certain on-site experience, which requires high quality personnel

Method used

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  • Method for rapidly judging wiring error of power distribution transformer monitoring terminal

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Embodiment Construction

[0029] The method for quickly judging the wiring error of the distribution transformer monitoring terminal in this embodiment is: first perform voltage loop correctness detection based on the three-phase AC voltage and current data collected by the distribution transformer monitoring terminal, and then perform current loop after confirming that the voltage loop is correct Correctness testing.

[0030] In specific implementation, the correctness of the voltage loop is tested as follows:

[0031] For the amplitude and phase angle of the three-phase AC voltage collected by the distribution transformer monitoring terminal, the judgment is made according to the following steps:

[0032] 1. If the voltage of a phase of A phase, B phase and C phase is zero, it is judged that the phase is missing;

[0033] 2. If the A phase voltage is within the qualified range of 220V±10%, the other two items are higher than the A phase voltage Times, it is judged as the reverse polarity of the phase A volt...

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Abstract

The invention discloses a method for rapidly judging a wiring error of a power distribution transformer monitoring terminal. The method is characterized by comprising two steps of voltage detection and current return accuracy detection, wherein the intelligent judgment on the wiring error of the power distribution transformer monitoring terminal is realized according to the phase relationship between a three-phase voltage and a current. According to the method, the method is embedded into the terminal in mode of embedded software directly; the automatic operation can be realized when the terminal is powered on, and then the wiring error of the terminal is judged automatically; and the installation personnel are prompted through a liquid crystal interface and a buzzer; the accuracy rate of the installation is improved; and the labor waste caused by secondary construction is avoided.

Description

Technical field [0001] The invention relates to a method for judging a wiring error of a distribution transformer monitoring terminal. Background technique [0002] The distribution transformer monitoring terminal is an important device of the "smart distribution network" in the "smart grid". It is installed on the low-voltage side of a 10KV distribution transformer to collect and analyze the three-phase voltage and current information on the low-voltage side of the distribution transformer. According to statistics, various transformer working condition data are formed and stored in the built-in non-volatile memory. At the same time, it can communicate with the distribution automation master station through GPRS\CDMA\Ethernet. The distribution transformer monitoring terminal must be wired correctly to correctly reflect the voltage, current power and electrical energy information of the distribution transformer. However, due to the unclear identification of the primary equipment ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02G01R19/14G01R29/16G01R29/18
Inventor 徐强王飞智建立孟光金芝国李海涛
Owner 安徽中鑫继远信息技术股份有限公司
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