CN201044348Y - Microcomputer type synthetic protection monitoring apparatus - Google Patents
Microcomputer type synthetic protection monitoring apparatus Download PDFInfo
- Publication number
- CN201044348Y CN201044348Y CNU2007200958590U CN200720095859U CN201044348Y CN 201044348 Y CN201044348 Y CN 201044348Y CN U2007200958590 U CNU2007200958590 U CN U2007200958590U CN 200720095859 U CN200720095859 U CN 200720095859U CN 201044348 Y CN201044348 Y CN 201044348Y
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- protection
- input port
- signal
- output port
- processing unit
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Abstract
A microcomputer comprehensive protective monitoring device consists of a power, a current transformer CT, a signal arranging circuit, an A/D conversion circuit and a central processing unit. The current transformer CT receives current signal and inputs the signal to an input port of the signal arranging circuit. The output port of the signal arranging circuit is connected with the input port of the A/D conversion circuit, and the output port of the A/D conversion circuit is connected with the input port of the central processing unit, and the output port of the central processing unit is respectively connected with a display and a relay; a power supply is connected with the input port of the central processing unit via a power changing module. The utility model integrates instantaneous trip protection, fixed (inverse) time lag protection, zero sequence protection, over (under) voltage protection, reclosing protection, gas protection, temperature protection, wire breakage monitoring, measuring and control. The device also has the advantages of real-time monitoring and protection, high reliability and complete protective functions each with an independent trip contact.
Description
Technical field:
The utility model relates to a kind of 6～10kV switch cubicle protective device, particularly a kind ofly collects the microcomputer type integrated protection supervising device that various relay functions are one.
Background technology:
What 6～10kV switch cubicle that present known electrical power trans mission/distribution system uses adopted is the GPF (General Protection False mode; every defencive function is respectively by being finished by several different relay synthetics; as current relay, voltage relay, multiple switching relay, the time relay, auxiliary relay, signal relay etc.; these relay functions are single, are used in combination various technical parameters and adjust cumbersome.Relay need calibrate and safeguard every year, and workload is big, installation is loaded down with trivial details, the relay mechanical part is more, the fault point is many, poor to environmental suitability, and GPF (General Protection False mode control precision is low, misoperation ratio height, poor reliability.
Summary of the invention:
The purpose of this utility model just is to overcome above-mentioned deficiency of the prior art; and provide a kind of microcomputer type integrated protection supervising device; this device integrates the function of various relays; and play real-time monitoring and protective effect; each defencive function all has the contact output of independently tripping; defencive function is complete, the reliability height.
Technical solutions of the utility model are: a kind of microcomputer type integrated protection supervising device is characterized in that: be made up of power supply, current transformer CT, signal conditioning circuit, A/D change-over circuit, CPU; Current transformer CT received current signal, and be entered into the input port of signal conditioning circuit, the output port of signal conditioning circuit is connected with the input port of A/D change-over circuit, the output port of A/D change-over circuit is connected with the input port of CPU, and the output port of CPU is connected with relay with display respectively; Power supply is connected with the input port of CPU by the power source change module.
The utility model can also adopt following technical measures:
Above-mentioned central processor CPU adopts DSPIC30F6013A.
The utility model has the advantages that: 1, integrate fast tripping protection, fixed (instead) time limit protection, zero-sequenceprotection, the protection of mistake (owing) pressure, reclosing protection, protection, temperature protection, PT disconnection monitoring and observing and controlling function; and play real-time monitoring and protective effect; each defencive function all has the contact output of independently tripping; defencive function is complete, the reliability height.
Description of drawings:
Fig. 1 is the utility model work block diagram.
Embodiment:
As shown in the figure: a kind of microcomputer type integrated protection supervising device, form by power supply, signal conditioning circuit, A/D change-over circuit, CPU DSPIC30F6013A; Current transformer CT received current signal, and be entered into the input port of signal conditioning circuit, the output port of signal conditioning circuit is connected with the input port of A/D change-over circuit, the output port of A/D change-over circuit is connected with the input port of CPU, and the output port of CPU is connected with relay with display respectively; Power supply is connected with the input port of CPU by the power source change module.
Operation principle of the present utility model is: current signal is after internal proprietary CT conversion, through entering the A/D conversion after the arrangement, CPU reads digital quantity after the conversion from A/D, show measured value, and to gather data carry out digital filtering, and with set point relatively, as satisfy action logic, CPU will drive exit relay and move.
Claims (2)
1. a microcomputer type integrated protection supervising device is characterized in that: be made up of power supply, current transformer CT, signal conditioning circuit, A/D change-over circuit, CPU; Current transformer CT received current signal, and be entered into the input port of signal conditioning circuit, the output port of signal conditioning circuit is connected with the input port of A/D change-over circuit, the output port of A/D change-over circuit is connected with the input port of CPU, and the output port of CPU is connected with relay with display respectively; Power supply is connected with the input port of CPU by the power source change module.
2. microcomputer type integrated protection supervising device according to claim 1 is characterized in that: above-mentioned central processor CPU adopts DSPIC30F6013A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200958590U CN201044348Y (en) | 2007-04-25 | 2007-04-25 | Microcomputer type synthetic protection monitoring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200958590U CN201044348Y (en) | 2007-04-25 | 2007-04-25 | Microcomputer type synthetic protection monitoring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201044348Y true CN201044348Y (en) | 2008-04-02 |
Family
ID=39259238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200958590U Expired - Fee Related CN201044348Y (en) | 2007-04-25 | 2007-04-25 | Microcomputer type synthetic protection monitoring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201044348Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694377A (en) * | 2012-06-18 | 2012-09-26 | 黑龙江省电力有限公司检修公司 | Microcomputer-type power transmission temporary protection device |
| CN104297625A (en) * | 2014-11-07 | 2015-01-21 | 安徽马钢自动化信息技术有限公司 | PT wire breakage diagnosis system and method |
-
2007
- 2007-04-25 CN CNU2007200958590U patent/CN201044348Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694377A (en) * | 2012-06-18 | 2012-09-26 | 黑龙江省电力有限公司检修公司 | Microcomputer-type power transmission temporary protection device |
| CN104297625A (en) * | 2014-11-07 | 2015-01-21 | 安徽马钢自动化信息技术有限公司 | PT wire breakage diagnosis system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20120425 |