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Online monitoring system for relay protection and automatic devices

A technology of automatic devices and monitoring systems, applied in circuit devices, information technology support systems, electrical components, etc., can solve problems such as power grid accidents, and achieve the effects of ensuring safe operation, less investment at one time, and low cost

Inactive Publication Date: 2011-07-20
CHAOYANG POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, with the continuous development of the power system and the continuous improvement of the reliability of power supply by users, the role of relay protection and automatic devices in the operation of the power grid is becoming more and more important, but the pressure plate function that plays a key role in automatic devices is easily operated Workers ignore it, because there are many types of pressure plates, and they need to be classified into categories when using them. When operating these pressure plates, if they cannot accurately input or withdraw a large number of pressure plates, wrong or missed investment will cause power grid accidents.
Especially for protection devices with many pressure plates or regular switching on and off of pressure plates, similar errors are more likely to occur for backup power automatic switch-on devices, bus differential failure devices, and de-loading devices.

Method used

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  • Online monitoring system for relay protection and automatic devices
  • Online monitoring system for relay protection and automatic devices

Examples

Experimental program
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Embodiment Construction

[0009] Examples, see attached figure 1 , the relay protection and automatic device on-line monitoring system is to collect the throwing and retreating signal of each pressure plate of the relay protection and automatic device as a remote signal star, and then send it to the state acquisition component RTU device, which is encoded by the RTU device and passed Line 485 is input into the communication controller T6 and then sent to the monitoring machine 3 for processing. Among them, the pressure plate state acquisition circuit 1 includes a miniature dry reed contact GJ 1 ~GJ 4 , permanent magnet CI 1 ~CI 4 , resistance R 1 ~R 4 , signal cable N; their connection relationship is resistance R 1 ~R 4 The other ends are connected to miniature reed contacts GJ 1 ~GJ 4 One end of the miniature reed contact GJ 1 ~GJ 4 The other end of the signal cable N is connected to the +110V power supply, and the miniature dry reed contact GJ 1 ~GJ 4 Both use permanent magnet CI 1 ~CI...

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Abstract

The invention belongs to a monitoring device in the power industry, and particularly relates to an online monitoring system for relay protection and automatic devices. The online monitoring system comprises a pressing plate state acquisition circuit (1), a monitoring machine (3) and a scheduling end (4) and further comprises a control circuit (2), wherein the control circuit (2) comprises a state acquisition element RTU (Remote Terminal Unit), a communication controller T6, photoelectric couplers G1-G4, and resistors R5-R12. In the online monitoring system for relay protection and automatic devices, the design for software and hardware is reasonable, the operation is simple, the installation and maintenance are convenient, strict management can be carried out on all pressing plates for relay protection and automatic devices of a substation, safe operation of power supply lines is ensured, the one-time investment is less, and the cost is low.

Description

technical field [0001] The invention belongs to a monitoring device in the electric power industry, in particular to an on-line monitoring system for relay protection and automatic devices. Background technique [0002] At present, with the continuous development of the power system and the continuous improvement of the reliability of power supply by users, the role of relay protection and automatic devices in the operation of the power grid is becoming more and more important, but the pressure plate function that plays a key role in automatic devices is easily operated Workers ignore it, because there are many types of pressure plates, and they need to be classified into different categories when using them. When operating these pressure plates, if they cannot accurately input or withdraw a large number of pressure plates, wrong or missed investment will cause power grid accidents. Especially for backup power self-switching devices, bus differential failure devices, de-load...

Claims

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Application Information

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IPC IPC(8): H02J13/00
CPCY02E60/723Y04S10/16Y02E60/00
Inventor 王金星
Owner CHAOYANG POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY