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

A technology for monitoring terminals and distribution transformers, which is applied in the direction of measuring electrical variables, current indication directions, and measuring devices. It can solve problems such as incorrect wiring, waste, and high quality requirements for personnel, so as to improve the correct rate of installation and avoid manual waste. Technology less demanding effect

Active Publication Date: 2012-10-17
安徽中鑫继远信息技术股份有限公司
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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] In this embodiment, the method for quickly judging the wiring error of the distribution transformer monitoring terminal is: firstly check the correctness of the voltage loop according to the three-phase AC voltage and current data collected by the distribution transformer monitoring terminal, and then perform the current loop after confirming that the voltage loop is correct Correctness check.

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

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

[0032] 1. If the voltage of a certain phase in phase A, phase B and phase C 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 that the phas...

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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 wiring errors of distribution transformer monitoring terminals. Background technique [0002] The distribution transformer monitoring terminal is an important device of the "smart distribution network" in the "smart grid". Statistics, forming various transformer working condition data and storing them in the built-in non-volatile memory, and communicating with the master station of power distribution automation through GPRS\CDMA\Ethernet and other methods. The distribution transformer monitoring terminal must be wired correctly in order to correctly reflect the voltage, current power and electric energy information of the distribution transformer. 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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