CN202840479U - Underground coal mine high-voltage switch protector - Google Patents
Underground coal mine high-voltage switch protector Download PDFInfo
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- CN202840479U CN202840479U CN 201220547636 CN201220547636U CN202840479U CN 202840479 U CN202840479 U CN 202840479U CN 201220547636 CN201220547636 CN 201220547636 CN 201220547636 U CN201220547636 U CN 201220547636U CN 202840479 U CN202840479 U CN 202840479U
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- coal mine
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- voltage switch
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Abstract
The utility model relates to a high-voltage switch protector, in particular to an underground coal mine high-voltage switch protector. The protector comprises a mutual inductor, a signal conditioning unit and a DSP (digital signal processing) control unit in sequential connection, and the DSP control unit is connected with a fault storage module, a communication interface unit, a man-machine interactive interface unit, a JTAG (joint test action group) interface module and an actuator. A novel comprehensive protection unit is designed by applying a high-performance DSP chip to a protection system. Besides, the underground coal mine electrical equipment comprehensive protection unit of the system is complete in protection variety, high in action speed, high in sensitivity, good in reliability, convenient and practical, and achieves electric protection for domestic underground coal mine power supply units.
Description
Technical field
The utility model relates to a kind of high-voltage switch gear protective device, has related in particular to high-voltage switch gear protective device under a kind of coal mine.
Background technology
According to statistics, the ignition of cable accident occurs 400 ~ 600 times in national emphasis colliery every year on average, approximately damages
Cable 500km.The main cause that causes these accidents is that overcurrent protection does not pass a test, and tripping and malfunction occur often, so that some occasions are got rid of protection.Simultaneously, along with the increase of mine power supply load, the growth of power supply distance, and the continuous extension of the raising of mechanization degree and mining depth has also brought difficulty to safe power supply.
The normal operation of Underground High-Voltage Power Network is for the production operations such as coal mining, ventilation, transportation and draining provide power and safety assurance.And improving constantly along with coal production mechanization, automaticity, underground power supply used capacity constantly increases, line voltage improves constantly, the continuous increase of high voltage supply distance, more and more higher to colliery underground power supply system reliability, fail safe and successional requirement.
Simultaneously, because Working Environment of Underground Mine is abominable, load fluctuation is large, and operating mode is very unstable, adds electric equipment and uses for a long time, and gas and coal dust gather, drip roof fall accident etc. can make insulation of electrical installation intensity reduce gradually.Moreover, safeguard owing to operating personnel the reasons such as wire fracture of improper or operating mistake, transmission line the faults such as electric leakage and single-phase earthing often can occur.If the untimely eliminating of earth fault, each phase line of electrical network can be moved under the on-Line Voltage, and long-term so operation will cause insulation breakdown, even three-phase or line to line fault accident occur.The arc energy of single-phase earthing, generation when phase fault occurs also can cause gas, coal-dust explosion in addition, directly jeopardizes personal safety and pit gear production safety.Generation for fear of accident guarantees personal safety, and effectively reduces the accident scope, studies high performance high voltage flameproof switch comprehensive protector and has important practical significance and great economic worth.
Mine anti-explosion high-voltage switch gear comprehensive protection device is the core control part of down-hole high pressure switch, is the main protection for high voltage supply system terminated line under the coal mine, and it has played the effect of protection high-tension cable and transformer.For cable and transformer be short-circuited, the fault such as overcurrent, electric leakage and cable bad can both play a protective role, thereby can guarantee the power supply safety of the whole high-tension line of its control.
Present domestic scene employed high-voltage switch gear Integrated Protection System sub-fraction still adopts integrated circuit type; be mainly used in the electric power system of isolated neutral; it adopts small scale integrated circuit to form the fault judging unit, the fault category that magnetic keeps the memory of fault memory cell to occur recently.This protection system is by power module, short block, and the insulation monitoring module forms, and is conducive to faults analysis and maintenance, but R is adopted in its overload time-delay, and the C device is delayed time inaccurate.The advantage of this protected mode is cheap, and is simple to operate; But it is large to exist volume, and precision is low, and the parameter tuning difficulty can't realize the shortcomings such as automation control.
Summary of the invention
The purpose of this utility model is to provide high-voltage switch gear protective device under a kind of coal mine.
The utility model is to achieve these goals by the following technical solutions:
High-voltage switch gear protective device under a kind of coal mine is characterized in that comprising:
Instrument transformer: comprise the voltage transformer summation current transformer, be used for finishing the forceful electric power signal to the conversion of weak electric signal;
Signal condition unit: comprise for the biasing circuit module in the sampled voltage scope that bipolar signal is transformed to A/D and be used for the frequency overlapped-resistable filter of elimination high fdrequency component;
The DSP control unit: to the electric power signal that A/D sampling obtains process, the judgement of firm power calculation of parameter, protection;
Faulty modules: be used for depositing various short troubles, voltage, electric current and leak current fault parameter, initial definite value configuration;
Communication interface unit: with the CAN bus communication;
Man Machine Interface unit: be used for the input of definite value, the determining of mode of operation, the demonstration of network operation parameter, operating state, fault type and carries out data communication with host computer;
Jtag interface module: come the emulation of completion system and program to download;
Actuator: the control signal that receives the DSP control unit is finished the control of relay switch state;
Described instrument transformer, signal condition unit, DSP control unit are linked in sequence, and described DSP control unit is connected with faulty modules, communication interface unit, Man Machine Interface unit, jtag interface module and actuator.
In the such scheme, described voltage transformer adopts the SPT204V model, and current transformer adopts the SCT254FK model.
In the such scheme, the DSP control unit adopts chip TMS 320 F 2812.
The utlity model has following beneficial effect:
The utility model lifts close microcomputer protective relay technology in conjunction with the advanced person and demand and the present situation of China's mine power supply system proposes, and high performance dsp chip is applied in the protection system, designs a kind of novel integrated protection unit.And this system protection A wide selection of colours and designs, quick action, highly sensitive, good reliability, convenient and practical underground coal mine electrical equipment integrated protection unit are to solve power supply unit electic protection problem under the domestic coal mine.And system configuration is flexible, and versatility is good, utilizes modularized design, can improve efficiency of algorithm, shorten the construction cycle, be easy to system maintenance and expansion, for the potential safety hazard that reduces the colliery underground power supply system, guarantee that Safety of Coal Mine Production has certain realistic meaning and real value.
Description of drawings
Fig. 1 is the utility model system configuration block diagram.
Embodiment
The below is described further the utility model:
The operation principle of high-voltage switch gear protective device is under the coal mine: at first with the signal of telecommunication that detects respectively through voltage transformer SPT204V summation current transformer SCT254FK; become and be fit to the range of signal that protection system allows; deliver to again the DSP processing and control element (PCE); after the A/D converter that is carried by DSP processing and control element (PCE) inside becomes it into digital signal; the DSP processing and control element (PCE) calculates accordingly and processes it immediately, and the data after then will processing are sent to host computer and show etc.The dsp chip TMS320F2812 that this protection system adopts fast operation, be good at Digital Signal Processing is as the master cpu unit, and it is a kind of 32 high-speed dsps, and instruction process speed is up to 150MIPS; 12 16 passage high-speed a/d modules of Embedded, but pile line operation; Multi-channel PWM can be used to realize the control to multiple motor.
System with dsp chip TMS320F2812 as core; overcome that the prior device computational speed is slow, computational accuracy is low and the incomplete shortcoming of defencive function; given full play to the dsp chip fast operation; be good at the advantage of Digital Signal Processing; both satisfied the relaying protection quick-action; the requirement of real-time has been satisfied again in the requirement of selectivity and reliability simultaneously.
The DSP controlled processing unit: data processing unit is the core of native system, should adopt high speed processor.This system adopts dsp chip TMS320F2812 as core, is mainly used in that the electric power signal that sampling obtains to A/D is processed, the judgement of firm power calculation of parameter, protection.In addition, also want the functions such as realization event record, fault alarm, failure diagnosis, failure wave-recording, fault inquiry.
Signal condition unit: comprise for the biasing circuit module in the sampled voltage scope that bipolar signal is transformed to A/D and be used for the frequency overlapped-resistable filter of elimination high fdrequency component; Signal after the processing process for DSP and.The A/D that native system adopts DSP2812 inside to carry carries out data acquisition.
Faulty modules: be used for depositing various short troubles, voltage, electric current and leak current fault parameter, initial definite value configuration;
Communication interface unit: with the CAN bus communication;
Man Machine Interface unit: be used for the input of definite value, the determining of mode of operation, the demonstration of network operation parameter, operating state, fault type and carries out data communication with host computer;
Jtag interface module: come the emulation of completion system and program to download;
Actuator: the control signal that receives the DSP control unit is finished the control of relay switch state;
Described instrument transformer, signal condition unit, DSP control unit are linked in sequence, and described DSP control unit is connected with faulty modules, communication interface unit, Man Machine Interface unit, jtag interface module and actuator.
Claims (3)
1. high-voltage switch gear protective device under the coal mine is characterized in that comprising:
Instrument transformer: comprise the voltage transformer summation current transformer, be used for finishing the forceful electric power signal to the conversion of weak electric signal;
Signal condition unit: comprise for the biasing circuit module in the sampled voltage scope that bipolar signal is transformed to A/D and be used for the frequency overlapped-resistable filter of elimination high fdrequency component;
The DSP control unit: to the electric power signal that A/D sampling obtains process, the judgement of firm power calculation of parameter, protection;
Faulty modules: be used for depositing various short troubles, voltage, electric current and leak current fault parameter, initial definite value configuration;
Communication interface unit: with the CAN bus communication;
Man Machine Interface unit: be used for the input of definite value, the determining of mode of operation, the demonstration of network operation parameter, operating state, fault type and carries out data communication with host computer;
Jtag interface module: come the emulation of completion system and program to download;
Actuator: the control signal that receives the DSP control unit is finished the control of relay switch state;
Described instrument transformer, signal condition unit, DSP control unit are linked in sequence, and described DSP control unit is connected with faulty modules, communication interface unit, Man Machine Interface unit, jtag interface module and actuator.
2. high-voltage switch gear protective device under a kind of coal mine according to claim 1 is characterized in that: described voltage transformer employing SPT204V model, current transformer employing SCT254FK model.
3. high-voltage switch gear protective device under a kind of coal mine according to claim 1 is characterized in that: DSP control unit employing chip TMS 320 F 2812.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547636 CN202840479U (en) | 2012-10-24 | 2012-10-24 | Underground coal mine high-voltage switch protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547636 CN202840479U (en) | 2012-10-24 | 2012-10-24 | Underground coal mine high-voltage switch protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202840479U true CN202840479U (en) | 2013-03-27 |
Family
ID=47952095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220547636 Expired - Fee Related CN202840479U (en) | 2012-10-24 | 2012-10-24 | Underground coal mine high-voltage switch protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202840479U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441470A (en) * | 2013-08-23 | 2013-12-11 | 桂林电子科技大学 | Electric leakage protection system based on DSP |
| CN117294025A (en) * | 2023-11-27 | 2023-12-26 | 泰安众诚自动化设备股份有限公司 | Mining high-voltage switch protection control method, system, controller and storage medium |
-
2012
- 2012-10-24 CN CN 201220547636 patent/CN202840479U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441470A (en) * | 2013-08-23 | 2013-12-11 | 桂林电子科技大学 | Electric leakage protection system based on DSP |
| CN103441470B (en) * | 2013-08-23 | 2015-03-25 | 桂林电子科技大学 | Electric leakage protection system based on DSP |
| CN117294025A (en) * | 2023-11-27 | 2023-12-26 | 泰安众诚自动化设备股份有限公司 | Mining high-voltage switch protection control method, system, controller and storage medium |
| CN117294025B (en) * | 2023-11-27 | 2024-02-27 | 泰安众诚自动化设备股份有限公司 | Mining high-voltage switch protection control method, system, controller and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHONGQING FEIERDA ELECTRICAL CO., LTD. Free format text: FORMER NAME: CHONGQING FIND MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 401327 the Jiulongpo District of Chongqing Municipality Gu Zhen Jing Long Industrial Park Patentee after: CHONGQING FIND MACHINERY CO., LTD. Address before: 401327 the Jiulongpo District of Chongqing Municipality Gu Zhen Jing Long Industrial Park Patentee before: Chongqing Find Machinery Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 402566, 30 Longshan Road, Pu Lu Town, Tongliang County, Chongqing Patentee after: CHONGQING FIND MACHINERY CO., LTD. Address before: 401327 the Jiulongpo District of Chongqing Municipality Gu Zhen Jing Long Industrial Park Patentee before: CHONGQING FIND MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: No. 30, Longshan Avenue, Pu Lu street, Tongliang District, Chongqing (Industrial Park) Patentee after: Chongqing feierda ventilation equipment Limited by Share Ltd Address before: 402566, 30 Longshan Road, Pu Lu Town, Tongliang County, Chongqing Patentee before: CHONGQING FIND MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20181024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |