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A high-voltage user work monitoring system and method applied in the electric power field

A monitoring system, high-voltage technology, applied in the direction of electrical components, circuit devices, etc., can solve problems such as power grid line load imbalance, economic loss, life safety, etc.

Active Publication Date: 2017-06-23
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A high-voltage user is a user between an ultra-high-voltage user and a low-voltage user in the power system. It is often a low-voltage user composed of an ultra-high voltage user transformed into a voltage such as 10KV and then supplied to a factory or a civilian power supply line. It is a particularly important link in the entire power system. Whether its operation is normal or not can not only affect all users under the entire high-voltage power supply, but also directly affect the low-voltage users under its jurisdiction. For this reason, a monitoring system is required. Work monitoring, and now commonly used monitoring systems are independent of high-voltage end monitoring and low-voltage end monitoring, this monitoring method will have the following disadvantages: when the high-voltage end fails, only the high-voltage end and the ultra-high-voltage end will be isolated and separated or backup line access, instead of isolation and splitting or backup line access between the high-voltage side and the low-voltage side; The high-voltage side and the ultra-high-voltage side will not be isolated and split or the backup line will be connected at the same time. The emergence of these two disadvantages will cause the load imbalance of the entire power grid line, extend new faults or spread the original fault, and affect more Users on the same network, causing great economic losses and life safety

Method used

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  • A high-voltage user work monitoring system and method applied in the electric power field

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Experimental program
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Effect test

Embodiment 1

[0034] A high-voltage user work monitoring system applied in the electric power field, such as figure 1 As shown, it is mainly composed of a main line protection circuit, a surge voltage protection circuit, a high-voltage intelligent terminal, a transmission circuit, a video monitoring circuit, a power supply circuit, an MCU single-chip microcomputer, and a background monitoring center system. The MCU single-chip microcomputer is respectively connected to the main line protection circuit and the power supply circuit , a video monitoring circuit, a high-voltage intelligent terminal, a surge voltage protection circuit and a transmission circuit, the transmission circuit is connected to the background monitoring center system, and the main line protection circuit includes a main line isolation protection circuit and an electronic current mutual inductance respectively connected to the MCU single-chip microcomputer The main line isolation protection circuit includes an AC contactor...

Embodiment 2

[0041] This embodiment is further optimized on the basis of Embodiment 1. Further, in order to better realize the system of the present invention, the background monitoring center system is mainly composed of a monitoring center host system, and the monitoring center host system is connected to transmit circuit.

[0042] Its working principle and function are as follows: MCU single-chip microcomputer will self-calibrate the processing data, surge voltage protection action event record data, high-voltage intelligent end protection action event record data, main line isolation protection circuit made protection action event record data, on-site monitoring data It is transmitted to the background monitoring center system for backup, command control and other processing, so that the background can notify the staff for quick on-site processing, judgment and maintenance, so as to achieve the purpose of the fastest response.

Embodiment 3

[0044] This embodiment is further optimized on the basis of Embodiment 1, in order to better realize the system of the present invention, such as figure 1 As shown, the video monitoring circuit is mainly composed of a video acquisition circuit connected to an infrared camera, and the video acquisition circuit is connected to an MCU single-chip microcomputer.

[0045] Its working principle and function are as follows: the infrared camera installed at the high-voltage user's work site monitors the physical work status of the high-voltage user in real time, and the monitored information is processed by the video acquisition circuit and sent to the MCU for in-depth processing for transmission Display and backup in the host system of the monitoring center, so that the background can notify the staff for quick on-site processing, judgment and maintenance, so as to achieve the fastest response.

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Abstract

The invention discloses a high-voltage user work monitoring system and method applied in the electric power field. The central system consists of the MCU single-chip microcomputer respectively connected to the main line protection circuit, power supply circuit, video monitoring circuit, high-voltage intelligent terminal, surge voltage protection circuit and transmission circuit, the transmission circuit is connected to the background monitoring center system, and the main line protection circuit includes A main line isolation protection circuit and an electronic current transformer connected with the MCU single-chip microcomputer respectively, the main line isolation protection circuit includes an AC contactor, a relay and an intelligent circuit breaker connected in sequence, and the AC contactor is connected to the MCU single-chip microcomputer; the method Including: power supply startup, self-effect processing, protection, monitoring, background monitoring center system processing.

Description

technical field [0001] The invention relates to the field of ultra-high voltage monitoring, in particular to a high-voltage user work monitoring system and method applied in the electric power field. Background technique [0002] A high-voltage user is a user between an ultra-high-voltage user and a low-voltage user in the power system. It is often a low-voltage user composed of an ultra-high voltage user transformed into a voltage such as 10KV and then supplied to a factory or a civilian power supply line. It is a particularly important link in the entire power system. Whether its operation is normal or not can not only affect all users under the entire high-voltage power supply, but also directly affect the low-voltage users under its jurisdiction. For this reason, a monitoring system is required. Work monitoring, and now commonly used monitoring systems are independent of high-voltage end monitoring and low-voltage end monitoring, this monitoring method will have the foll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
Inventor 李杨王洪
Owner STATE GRID CORP OF CHINA