CN105262223A - Microcomputer protection abnormity processing auxiliary device - Google Patents
Microcomputer protection abnormity processing auxiliary device Download PDFInfo
- Publication number
- CN105262223A CN105262223A CN201510740282.3A CN201510740282A CN105262223A CN 105262223 A CN105262223 A CN 105262223A CN 201510740282 A CN201510740282 A CN 201510740282A CN 105262223 A CN105262223 A CN 105262223A
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- China
- Prior art keywords
- signal
- protection
- circuit
- output
- processing unit
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to the field of power system automatic control, specifically a microcomputer protection abnormity processing auxiliary device. The device comprises a signal converter which converts an external analog signal into a low-voltage signal; a multichannel synchronous sampling circuit which achieves the synchronous sampling of multiple analog signals and converts the signals into digital sampling values; a hard contact input circuit which achieves external switch position, switch position and other related switching values input; a hard contact output circuit which temporarily protects an action output contact; a time synchronous circuit which receives and analyzes a time synchronous signal; and an integrated data processing unit which outputs a protection action signal and protects a protection action output relay to output an action signal. The device can be used for temporary protection, is used for temporarily replacing a conventional protection apparatus to achieve the monitoring of the state of a power system circuit, and can process abnormal conditions of a relay protection apparatus with no need of power failure. The device has functions of GPS time setting and fault recording, and can serve as a portable fault recorder for on-site inspection and monitoring.
Description
technical field
The invention belongs to Automation of Electric Systems control field.Specifically Microcomputer Protection abnormality processing servicing unit.
Background technology
In the prior art, be single covering device based on domestic 66kV and following defeated, distribution line protection, as there are protective device abnormal conditions, needing primary equipment to have a power failure can process, or adopts adjacent protection ribbon and the way installing temporary protection additional.Require that primary system must possess certain condition, complicated operation by adjacent protection ribbon, have great risk; Install temporary protection method additional to primary system not requirement, relatively simply, but relaying protection specialty carries great risk.Due to without finished product temporary protection, adopt conventional relays patch, simple and easy fixing method, or by the method that old protective relaying device replaces temporarily, defencive function is lack of standardization, poor reliability more.
Summary of the invention
The present invention is directed to above-mentioned deficiency and provide one to can be used as temporary protection for substituting GPF (General Protection False device temporarily; to circuit on power system monitoring state; have a power failure without the need to primary equipment and can process the abnormal conditions of protective relaying device; ensure that the safe and stable operation of system, be when integrating temporary protection, GPS couple, the Microcomputer Protection abnormality processing servicing unit of failure wave-recording three kinds of functions.
Technical solution of the present invention is: a kind of Microcomputer Protection abnormality processing servicing unit, comprising:
Signal converter (PT/CT): external analog signal is converted to low voltage signal.
Multi-channel synchronal sampling circuit: multichannel analog signals synchronous acquisition is also converted to digital sample values.
Hard contact is opened into circuit: outside disconnecting link position, the position of the switch and the input of other related switch amounts.
Hard contact digital output circuit: interface is outputed in temporary protection action.
Time synchronized circuit: receive and resolve time synchronizing signal.
Integrated data processing unit: output protection actuating signal drives protection act to output relay and outputs actuating signal.
Integrated data processing unit comprises:
Digital Signal Processing DSP and central processing unit ARM forms core data arithmetic element, controls digital output circuit output signal for sampled data computing, starting protection.
Internal memory SDRAM is used for the parameters needed for store sample, recorder data and system cloud gray model.
Memory cell FLASH is for storing embedded program needed for recorded wave file and plant running and definite value.
Ethernet interface RJ45 is used for device main frame and communicates with background manage software, the optimum configurations receiving user also on send real-time sampling data and fault recorder data.
System clock required when real-time clock RTC circuit runs for generation of comprehensive arithmetic element.
Advantage of the present invention is: 1, Microcomputer Protection abnormality processing servicing unit can be used as temporary protection for substituting GPF (General Protection False device to circuit on power system monitoring state temporarily; have a power failure without the need to primary equipment and can process the abnormal conditions of protective relaying device, ensure that the safe and stable operation of system.When device has a GPS couple and failure wave-recording function, can be used as portable fault oscillograph for site examining and repairing and supervision.2, volume is little, uses flexibly; Adopt Embedded Hardware Platform, data processing performance is strong, stable.
Below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
Accompanying drawing explanation
Fig. 1 is block diagram of the present invention.
Fig. 2 is integrated data processing unit block diagram.
Embodiment
See Fig. 1, Microcomputer Protection abnormality processing servicing unit block diagram name is called: signal converter, multi-channel synchronal sampling circuit, hard contact leave into circuit, hard contact digital output circuit, time synchronized circuit, integrated data processing unit.
External analog amount signal is digital signal by A/D converter sample quantization after signal converter (PT/CT) is changed, and sends into integrated data processing unit.Integrated data processing unit according to rhabdion point open into semaphore status (switch, disconnecting link position) and through A/D converter gather analog quantity information; calculate the state of current object of protection; when result of calculation reaches default protection definite value, integrated data processing unit output protection actuating signal drives protection act to output relay and outputs actuating signal.Signal when time synchronized circuit is used for receiving and resolves outside pair, and parsing gained temporal information is delivered to integrated data processing unit.
See Fig. 2, integrated data processing unit block diagram name is called: Digital Signal Processing (DSP), central processing unit (ARM), real-time clock (RTC), memory cell (FLASH), internal memory (SDRAM), Ethernet interface (RJ45).
Digital Signal Processing DSP and central processing unit ARM forms core data arithmetic element, controls digital output circuit output signal for sampled data computing, starting protection.
Internal memory SDRAM is used for the parameters needed for store sample, recorder data and system cloud gray model.
Memory cell FLASH is for storing embedded program needed for recorded wave file and plant running and definite value.
Ethernet interface RJ45 is used for device main frame and communicates with background manage software, the optimum configurations receiving user also on send real-time sampling data and fault recorder data.
System clock required when real-time clock RTC circuit runs for generation of comprehensive arithmetic element.
Claims (2)
1. a Microcomputer Protection abnormality processing servicing unit, is characterized in that comprising:
Signal converter: external analog signal is converted to low voltage signal;
Multi-channel synchronal sampling circuit: multichannel analog signals synchronous acquisition is also converted to digital sample values;
Hard contact is opened into circuit: outside disconnecting link position, the position of the switch and the input of other related switch amounts;
Hard contact digital output circuit: interface is outputed in temporary protection action;
Time synchronized circuit: receive and resolve time synchronizing signal;
Integrated data processing unit: output protection actuating signal drives protection act to output relay and outputs actuating signal.
2. according to Microcomputer Protection abnormality processing servicing unit according to claim 1, it is characterized in that integrated data processing unit comprises: Digital Signal Processing DSP and central processing unit ARM forms core data arithmetic element, control digital output circuit output signal for sampled data computing, starting protection;
Internal memory SDRAM is used for the parameters needed for store sample, recorder data and system cloud gray model;
Memory cell FLASH is for storing embedded program needed for recorded wave file and plant running and definite value;
Ethernet interface RJ45 is used for device main frame and communicates with background manage software, the optimum configurations receiving user also on send real-time sampling data and fault recorder data;
System clock required when real-time clock RTC circuit runs for generation of comprehensive arithmetic element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510740282.3A CN105262223A (en) | 2015-11-05 | 2015-11-05 | Microcomputer protection abnormity processing auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510740282.3A CN105262223A (en) | 2015-11-05 | 2015-11-05 | Microcomputer protection abnormity processing auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105262223A true CN105262223A (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510740282.3A Pending CN105262223A (en) | 2015-11-05 | 2015-11-05 | Microcomputer protection abnormity processing auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105262223A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2001104A2 (en) * | 2007-06-08 | 2008-12-10 | Honeywell International Inc. | Network-based aircraft secondary electric power distribution system |
| CN201623475U (en) * | 2010-02-09 | 2010-11-03 | 保定华源电气新技术开发有限公司 | Small current system grounding protection device |
-
2015
- 2015-11-05 CN CN201510740282.3A patent/CN105262223A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2001104A2 (en) * | 2007-06-08 | 2008-12-10 | Honeywell International Inc. | Network-based aircraft secondary electric power distribution system |
| CN201623475U (en) * | 2010-02-09 | 2010-11-03 | 保定华源电气新技术开发有限公司 | Small current system grounding protection device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |