CN202978427U - Microcomputer monitoring and protecting device of mine-used feeder switch - Google Patents
Microcomputer monitoring and protecting device of mine-used feeder switch Download PDFInfo
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- CN202978427U CN202978427U CN2012206273121U CN201220627312U CN202978427U CN 202978427 U CN202978427 U CN 202978427U CN 2012206273121 U CN2012206273121 U CN 2012206273121U CN 201220627312 U CN201220627312 U CN 201220627312U CN 202978427 U CN202978427 U CN 202978427U
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- programmable control
- microcomputer
- logic programmable
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to a microcomputer monitoring and protecting device of a mine-used feeder switch. The microcomputer monitoring and protecting device is composed of a microcomputer processing module, a logic programmable control module, a communication module, a display module, a FLASH module, an RAM module, a voltage/current collection module, a state input module, a relay output module and an infrared remote control receiving module; the microcomputer processing module is connected with the logic programmable control module, the communication module and the infrared remote control receiving module respectively; and the FLASH module, the RAM module, the display module, the voltage/current collection module, the state input module and the relay output module are connected with the logic programmable control module respectively. With the microcomputer monitoring and protecting device of the utility model adopted, reliable electric leakage protection, selective electric leakage protection, phase-sensitive protection and tail-end short-circuit protection of the feeder switch can be realized; and a user can better perform the work such as circuit control, load allocation, equipment maintenance and responsibility assessment.
Description
Technical field
The utility model relates to the protective device of electric power system, relates in particular to a kind of low-voltage feeder switch protective device for the colliery underground power supply system.
Background technology
Mining feed switch is for distribution system master switch or switch-dividing under coal mine, and its effect is the contact of disjunction and contact the superior and the subordinate, and the power supply safety of protection next stage facilitates the next stage line maintenance.In time play the effect of protection outage when subordinate's circuit outlet fault, and to the isolation of upper level supply line.When doing the branch switch use, adjust corresponding setting value, to the separately protected disconnection of line related fault and isolation, and can easily see fault message from display window, fast and easy is overhauled and is fixed a breakdown.Under coal mine, power supply trouble has become the bottleneck of its production of restriction now; power protection system has been gone up or has just been prepared in each colliery; it is unreliable that but all there is earth leakage protective in currently marketed feeding switch microcomputer monitor and protection device, protection is leaked in choosing, do not possess the problems such as phase-sensitive protection.
The utility model content
It is reliable that technical problem to be solved in the utility model is to provide a kind of earth leakage protective, protection is leaked in choosing, and the mining feed switch microcomputer monitor and protection device with end short-circuit protection, phase-sensitive protection function.
the technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of mining feed switch microcomputer monitor and protection device, comprise the MICROCOMPUTER PROCESSING module, the logic programmable control module, optical coupling module, communication module, display module, the FLASH module, the RAM module, the electric current and voltage acquisition module, the state input module, relay output module and infrared remote control receiver module, described MICROCOMPUTER PROCESSING module respectively with described logic programmable control module, described communication module and described infrared remote control receiver module connect, described FLASH module, the RAM module, display module, the electric current and voltage acquisition module, state input module and relay output module all are connected with described logic programmable control module.
The beneficial effects of the utility model are: the utility model can be realized reliable earth leakage protective, choosing leakage protection, phase-sensitive protection and end short-circuit protection to feeding switch, and the user can carry out the work of the aspects such as circuit is controlled, load allotment, maintenance of equipment, responsibility examination better.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described relay output module is connected with described logic programmable control module by optical coupling module.
Further, described state input module connects the logic programmable control module by optical coupling module.
Further, described MICROCOMPUTER PROCESSING module is connected with communication module by optical coupling module.
Adopt the beneficial effect of above-mentioned further scheme to be, optical coupling module plays the isolating switch effect, and when communication module, state input module, when relay output module breaks down, protection MICROCOMPUTER PROCESSING module is unaffected.
Further, described logic programmable control module connects temperature collect module.
Adopt the beneficial effect of above-mentioned further scheme to be, temperature collect module collection indoor temperature offers the staff and does the analysis reference.
Description of drawings
Fig. 1 is mining feed switch microcomputer monitor and protection device schematic diagram;
Fig. 2 is mining feed switch microcomputer monitor and protection application of installation circuit diagram.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
The utility model is used under coal mine, uses exchanging 50Hz, and rated voltage is 3300V, 1140V, 600V, in the electric power system of rated current 0 to 630A three-phase isolated neutral.
A kind of mining feed switch microcomputer monitor and protection device as shown in Figure 1 comprises MICROCOMPUTER PROCESSING module, logic programmable control module, communication module, display module, FLASH module, RAM module, electric current and voltage acquisition module, optical coupling module, temperature collect module, state input module, relay output module and infrared remote control receiver module.Described MICROCOMPUTER PROCESSING module is connected with described logic programmable control module and described infrared remote control receiver module respectively.Communication module is connected with the MICROCOMPUTER PROCESSING module by optical coupling module.Described temperature collect module, FLASH module, RAM module, display module, electric current and voltage acquisition module all are connected with described logic programmable control module.Described state input module and relay output module all are connected with described logic programmable control module by optical coupling module.
The MICROCOMPUTER PROCESSING module is used for the signal that receives from modules is carried out calculation process and exports operation result, and Logic control module is responsible for the signal processing priority sequence that modules sends over, and guarantees the work of MICROCOMPUTER PROCESSING module stability.The FLASH(flash memory) module is used for the memory retention system program.The ephemeral data that produces when RAM(random access memory random asccess memory) module is used for memory device system work.Optical coupling module plays the insulation blocking effect in device, state input module, relay output module, when communication module breaks down, and the safety of the MICROCOMPUTER PROCESSING module of the protection optical coupling module other end makes it unaffected.
Carry out collecting work to the three-phase voltage on bus and electric current by the electric current and voltage acquisition module, and send the signal that collects to the logic programmable control module, process by the logic programmable control module, judge whether circuit exists fault, when supply line breaks down, the logic programmable control module is sent an instruction, send relay output module to by optical coupling module, the control relay action, tripping coil on opening switch reaches the purpose of the cut-out of controlling supply line.On the other hand, the electric current and voltage acquisition module sends the signal that gathers to the information that obtains after the logic programmable control module is processed, send communication module to by the MICROCOMPUTER PROCESSING module, realize the Long-distance Control adjustment operation by communication module, comprise Long-distance Control, remote signal, remote measurement and remote adjustment function.The utlity model has two kinds of communication modes of RS485 and CAN, analog data uploads to substation by RS485, and fault uploads to substation by CAN.
The infrared remote control receiver module is used for receiving the infrared signal of sending from the peripheral hardware remote controller, and converts the infrared signal that receives to the signal of telecommunication, then electric signal transmission is carried out signal to the MICROCOMPUTER PROCESSING module process.
The state input module is used for that input selector switch is in a minute position, a certain location status of position and test position etc. is put, overhauled to co-bit, and sends selected position of the switch information to the logic programmable control module.
Display module, to the voltage in circuit, electric current, residual voltage, zero-sequence current, active power, reactive power, power factor, electricity consumption electricity, to switch minute, the combined floodgate running status, operating time, the character of operation, electric current, the voltage waveform of time of failure during fault, reason, instant of failure current value and fault trip moment, the information such as indoor temperature show.
The abbreviation of CAN(Control ler Area Network/ controller local area network), CAN belongs to the category of fieldbus, and it is the distributed control of a kind of effective support or the real-time serial communication network of controlling.Dcs based on the CAN bus realizes real-time between each node, data communication reliably.
RS-485 is a kind of electrical equipment standard, and logical one represents take the voltage difference of line-to-line as+(2 ~ 6) V; Logical zero represents take the voltage difference of line-to-line as-(2 ~ 6) V.The RS-485 interface is the combination of adopting balance driver and differential receiver, and anti-common mode disturbances ability strengthens, and noise immunity is good.
Temperature collect module is used for gathering indoor environment temperature, and the temperature signal that collects shows on display module by the logic programmable control module.
Protection is leaked in choosing: should judge by the residual voltage of setting and sensitivity and the zero-sequence current of zero-sequence current with the phase angle of residual voltage whether system exists leak current fault.
The earth leakage search/lockout function: when switch load side insulation resistance during lower than 40K Ω+20%(1140V), 22K Ω+20%(660V) master switch, branch switch all can realize reliably the earth leakage search/lockout function, possess simultaneously total, switch-dividing adaptation function.
Phase-sensitive protection: when system's generation following situations, the utility model will carry out phase-sensitive protection: 1) three-phase current is simultaneously greater than set point; 2) power factor is greater than 0.98.
The end short-circuit protection: when system's generation following situations, the utility model will carry out the end short-circuit protection: 1) three-phase simultaneously electric current greater than set point; 2) A phase current and B phase current phase difference are 180 °; 3) A phase current and C phase current phase difference are 180 °; 4) B phase current and C phase current phase difference are 180 °.
Fig. 2 is mining feed switch microcomputer monitor and protection application of installation circuit diagram.
The utility model is an Intellectual computer application apparatus take single-chip microcomputer as core.It is arranged on the low voltage feeder controller switching equipment and (is called for short: feeding switch), reception is from the signal of feeding switch voltage transformer, current transformer, zero sequential potential transformer, zero sequence current mutual inductor, by the processing of Single Chip Microcomputer (SCM) system, control low tension switch and circuit is carried out the protections such as short circuit, overload, overvoltage, under-voltage, electric leakage, wind-powered electricity gas locking, earth leakage search/lockout; The voltage of circuit, electric current, residual voltage, zero-sequence current, active power, reactive power, power factor, electricity consumption electricity etc. are measured, shown; To switch minute, the combined floodgate running status, the operating time, the character of operation, electric current, the voltage waveform of the time of failure during fault, reason, instant of failure current value and fault trip moment show, record, store; Make the user can carry out better the work of the aspects such as circuit is controlled, load allotment, maintenance of equipment, responsibility examination.
The above is only preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (5)
1. mining feed switch microcomputer monitor and protection device, it is characterized in that: comprise the MICROCOMPUTER PROCESSING module, the logic programmable control module, communication module, display module, the FLASH module, the RAM module, the electric current and voltage acquisition module, the state input module, relay output module and infrared remote control receiver module, described MICROCOMPUTER PROCESSING module respectively with described logic programmable control module, described communication module and described infrared remote control receiver module connect, described FLASH module, the RAM module, display module, the electric current and voltage acquisition module, state input module and relay output module all are connected with described logic programmable control module.
2. mining feed switch microcomputer monitor and protection device according to claim 1, it is characterized in that: described relay output module is connected with described logic programmable control module by optical coupling module.
3. mining feed switch microcomputer monitor and protection device according to claim 1 and 2, it is characterized in that: described state input module is connected with described logic programmable control module by optical coupling module.
4. mining feed switch microcomputer monitor and protection device according to claim 1 and 2, it is characterized in that: described MICROCOMPUTER PROCESSING module is connected with communication module by optical coupling module.
5. mining feed switch microcomputer monitor and protection device according to claim 1 and 2, is characterized in that: described logic programmable control module connection temperature collect module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206273121U CN202978427U (en) | 2012-11-23 | 2012-11-23 | Microcomputer monitoring and protecting device of mine-used feeder switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206273121U CN202978427U (en) | 2012-11-23 | 2012-11-23 | Microcomputer monitoring and protecting device of mine-used feeder switch |
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| Publication Number | Publication Date |
|---|---|
| CN202978427U true CN202978427U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206273121U Expired - Fee Related CN202978427U (en) | 2012-11-23 | 2012-11-23 | Microcomputer monitoring and protecting device of mine-used feeder switch |
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| CN (1) | CN202978427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529825A (en) * | 2014-09-30 | 2016-04-27 | 上海颐坤自动化控制设备有限公司 | Mining high-voltage intelligent integrated protection device and working principle thereof |
| CN114928019A (en) * | 2022-07-19 | 2022-08-19 | 深圳市世坤科技实业有限公司 | Electric switch emergency protection system and method of automatic control system |
-
2012
- 2012-11-23 CN CN2012206273121U patent/CN202978427U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529825A (en) * | 2014-09-30 | 2016-04-27 | 上海颐坤自动化控制设备有限公司 | Mining high-voltage intelligent integrated protection device and working principle thereof |
| CN105529825B (en) * | 2014-09-30 | 2019-09-13 | 上海颐坤自动化控制设备有限公司 | A kind of mining high-voltage intelligent comprehensive protection device |
| CN114928019A (en) * | 2022-07-19 | 2022-08-19 | 深圳市世坤科技实业有限公司 | Electric switch emergency protection system and method of automatic control system |
| CN114928019B (en) * | 2022-07-19 | 2022-11-01 | 深圳市世坤科技实业有限公司 | Electric switch emergency protection system and method of automatic control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151123 |
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| EXPY | Termination of patent right or utility model |