Distribution transformer on-line user identification carrier monitoring controller and control method

Abstract

The invention discloses a distribution transformer on-line user identification carrier monitoring controller and a control method. The controller comprises a main-control central processing unit (CPU), a complex programmable logic device (CPLD) communication logic control circuit, a recommend standard (RS) 232 communication end port, a first co-processing CPU, a second co-processing CPU, a third co-processing CPU, an A-phase carrier communication end port, a B-phase carrier communication end port, a C-phase carrier communication end port, a first crystal oscillator, a first reset chip, a second crystal oscillator, a second reset chip, a third crystal oscillator, a third reset chip, a fourth reset chip, a fourth crystal oscillator, an upper computer and a user side. The main-control CPU receives, processes and outputs instruction information of the upper computer, the CPLD communication logic control circuit receives and outputs the information processed by the main-control CPU, the co-processing CPUs receive the information and output the information to the user side through the carrier communication end ports, and the user side receives, processes and sends feedback information to the upper computer in a reversed back passing mode. By means of the distribution transformer on-line user identification carrier monitoring controller and the control method, distribution type remote control is achieved, examination of line loss of a distribution transformer and precise user on-line recognition can be completed.

Description

technical field [0001] The invention relates to the technical field of power distribution management and monitoring systems, in particular to a distribution transformer online user identification carrier monitoring controller and a control method. Background technique [0002] In my country's low-voltage power distribution network, the power supply lines are mainly buried cables and overhead wires. Due to the complexity of the lines and difficult management, it is difficult to identify the connection relationship between the distribution transformer and the user, resulting in a single distribution transformer line. Damage assessment is difficult. [0003] In order to solve the problem of difficult line loss assessment of a single distribution transformer, the power supply department generally adopts the method of ledger records to register and assess information such as the distribution transformer number, line number, and single-phase user's phase sequence connected to the u...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of difficult line loss assessment of a single distribution transformer, the power supply department generally adopts the method of ledger records to register and assess information such as the number of the distribution transformer connected to the user's meter end, the line number, and the phase sequence of the single-phase user. However, this method has the following defects: 1. The ledger records are entered manually and are prone to errors. 2. There are a large number of distribution transformers and lines in the power distribution system, the wiring is relatively complicated, and there are many users. It is difficult to identify the user's wiring in real time.

[0004] At present, with the rapid development of computer technology, the level of automatic management of power systems is getting higher and higher. It is found that power lines can not only transmit electric energy to users, but also serve as communication channels for carrier waves. Power line carrier communication technology can be used to realize online user communication. identification, but the remote meter reading system of the existing power distribution system can only conduct user information assessment when the user wiring is confirmed, and the change of user wiring and the wiring status of old users cannot be identified and assessed

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