CN205265232U - Novel colliery low -voltage power supply network selective earth lea kage protection in pit device - Google Patents
Novel colliery low -voltage power supply network selective earth lea kage protection in pit device Download PDFInfo
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- CN205265232U CN205265232U CN201521115610.2U CN201521115610U CN205265232U CN 205265232 U CN205265232 U CN 205265232U CN 201521115610 U CN201521115610 U CN 201521115610U CN 205265232 U CN205265232 U CN 205265232U
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Abstract
The utility model discloses a novel colliery low -voltage power supply network selective earth lea kage protection in pit device, the device is including data acquisition node modules and the two major modules of central processing module, data acquisition node modules includes zero -sequence voltage or zero sequence current transformer, low pass filter, AD conversion, CC2530, zigbee wireless module, OMRON G2R -2 relay, battery powered unit, central processing module includes zigbee module, CC2530, STM32F407ZGT6, switching power supply. This device can effectual real -time supervision in the pit low -voltage power supply network power supply system whether the trouble of leaking electricity takes place, can in time tell the electric leakage branch road and only cut off the electric leakage branch road if there is the electric leakage trouble to treat that the staff rebuilds and does not influence the power supply work of other branch roads that guaranteed colliery underground power supply system's security on the one hand, on the other hand has also improved the production efficiency in colliery effectively.
Description
Technical field
The utility model relates to the technical field of coal mine downhole safety, particularly relates to a kind of novel colliery underground low-tension network choosingSelecting property earth leakage protective device.
Background technology
Coal industry is an important energy industry, Ye Shiyige big coal country of China, but production environment complexity under coal mine,Natural conditions are severe, and power supply unit is easily damaged, and may cause electric leakage, electric shock, produce electric spark, cause that fire evenGas explosion, causes casualties, therefore along with the development of colliery industry, to reliability, security and continuity under coal mineRequirement also more and more higher, in order to ensure the normal operation of personnel in the pit's safety and electrical equipment, the loss of minimizing accident, improveThe reliability of colliery underground power supply system, the underground low-tension network selective leakage protection device of developing high performance-price ratio is also veryNecessary. But under the coal mine just using now, mostly to exist False Rate not high for earth leakage protective device, and reliability is very poor, lineThe drawbacks such as road difficult arrangement.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of novel colliery underground low-tension network selectiveEarth leakage protective device.
The technical scheme that the utility model adopts is:
1. a novel colliery underground low-tension network selective leakage protection device, is characterized in that: described device comprises data acquisitionNode module and the large module of central processing module two; Described data acquisition node module comprise residual voltage or zero sequence current mutual inductor,Low pass filter, A/D conversion, CC2530, Zigbee wireless module, OMRONG2R-2 relay, battery power supply unit; InstituteState central processing module and comprise Zigbee module, CC2530, STM32F407ZGT6, Switching Power Supply; Wherein zero sequence current mutual inductor,Zero sequential potential transformer is connected with low pass filter, and low pass filter is connected with A/D modular converter, and powered battery is connected with CC2530,CC2530 is connected with A/D modular converter, Zigbee module, OMRONG2R2-2 relay, OMRONG2R2-2 relay and feedSwitch is connected, and Switching Power Supply is connected with STM32F407ZGT6, and STM32F407ZGT6 is connected with alarm, CC2530, CC2530Be connected with Zigbee module.
2. described in, data acquisition node module is arranged on the main line of electric power system and each branch road, this module by zero sequence current mutual inductor andZero sequential potential transformer gathers respectively zero-sequence current and residual voltage, gathers the data of coming and converts to by low pass filter and A/DThe discernible signal of CC2530, then be sent to central processing module through Zigbee module, if while having leak current fault, CC2530 warpZigbee module receives signal and controls the actuating of relay of respective branch, then controls feeding switch and acts accordingly.
3. described in, central processing module is arranged on coordinator node place, and this module receives by Zigbee module the number that each branch road collection comesAccording to, and send STM32F407ZGT6 to through CC2530, then judge whether to occur leak current fault through STM32F407ZGT6 analysis dataWith electric leakage branch road, if there is leak current fault to occur, STM32F407ZGT6 can send action command to electric leakage branch road through Zigbee module.Compared with prior art, the beneficial effects of the utility model are:
In this device, adopt zero sequential potential transformer and zero sequence current mutual inductor to gather respectively residual voltage and the zero sequence of each nodeElectric current, and convert the discernible signal of CC2530 to by low pass filter and A/D, send to through Zigbee module, if there is leak current fault, the fault that alarm sounds and judges according to zero-sequence current in the timely deal with data of STM32F407ZGT6Branch node can be received disconnection action command through Zigbee module, disconnected in time by OMRONG2R2-2 Control feeding switchOpen, alarm can be notified staff the maintenance of coming in time, can implement rapidly in time earth leakage protective function like this, also canRealize earth leakage protective selectively, guaranteed safety and the efficiency of colliery underground work. And this device is without rearranging circuitWhether special detection leaks electricity, and has solved the difficulty of wiring.
Brief description of the drawings
Fig. 1 is: the earth leakage protective overall design drawing of underground low-tension network.
Fig. 2 is: the general frame of routing node and terminal node.
Fig. 3 is: coordinator node module frame chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further illustrated.
1. a novel colliery underground low-tension network selective leakage protection device, is characterized in that: described device comprises data acquisitionNode module and the large module of central processing module two; Described data acquisition node module comprise residual voltage or zero sequence current mutual inductor,Low pass filter, A/D conversion, CC2530, Zigbee wireless module, OMRONG2R-2 relay, battery power supply unit; InstituteState central processing module and comprise Zigbee module, CC2530, STM32F407ZGT6, Switching Power Supply; Wherein zero sequence current mutual inductor,Zero sequential potential transformer is connected with low pass filter, and low pass filter is connected with A/D modular converter, and powered battery is connected with CC2530,CC2530 is connected with A/D modular converter, Zigbee module, OMRONG2R2-2 relay, OMRONG2R2-2 relay and feedSwitch is connected, and Switching Power Supply is connected with STM32F407ZGT6, and STM32F407ZGT6 is connected with alarm, CC2530, CC2530Be connected with Zigbee module.
2. described in, data acquisition node module is arranged on the main line of electric power system and each branch road, this module by zero sequence current mutual inductor andZero sequential potential transformer gathers respectively zero-sequence current and residual voltage, gathers the data of coming and converts to by low pass filter and A/DThe discernible signal of CC2530, then be sent to central processing module through Zigbee module, if while having leak current fault, CC2530 warpZigbee module receives signal and controls the actuating of relay of respective branch, then controls feeding switch and acts accordingly.
3. described in, central processing module is arranged on coordinator node place, and this module receives by Zigbee module the data that each branch road collection comes,And send STM32F407ZGT6 to through CC2530, then judge whether to occur leak current fault and leakage through STM32F407ZGT6 analysis dataElectricity branch road, if there is leak current fault to occur, STM32F407ZGT6 can send action command to electric leakage branch road through Zigbee module.
4. in this device, adopted zero sequential potential transformer and zero sequence current mutual inductor to gather respectively residual voltage and the zero sequence electricity of each nodeStream, and convert the discernible signal of CC2530 to by low pass filter and A/D, send STM32F407ZGT6 to through Zigbee moduleIn time deal with data, if there is leak current fault, alarm sounds and the fault branch node judged according to zero-sequence current can be throughZigbee module is received disconnection action command, disconnects in time alarm meeting by OMRONG2R2-2 Control feeding switchNotify in time staff the maintenance of coming, can implement rapidly in time so earth leakage protective function, also can realize earth leakage protectiveSelective, guaranteed safety and the efficiency of colliery underground work. And this device is without whether rearranging circuit special detectionElectric leakage, has solved the difficulty of wiring.
Claims (3)
1. a novel colliery underground low-tension network selective leakage protection device, is characterized in that: described device comprises data acquisitionNode module and the large module of central processing module two; Described data acquisition node module comprise residual voltage or zero sequence current mutual inductor,Low pass filter, A/D conversion, CC2530, Zigbee wireless module, OMRONG2R-2 relay, battery power supply unit; InstituteState central processing module and comprise Zigbee module, CC2530, STM32F407ZGT6, Switching Power Supply; Wherein zero sequence current mutual inductor,Zero sequential potential transformer is connected with low pass filter, and low pass filter is connected with A/D modular converter, and powered battery is connected with CC2530,CC2530 is connected with A/D modular converter, Zigbee module, OMRONG2R2-2 relay, OMRONG2R2-2 relay and feedSwitch is connected, and Switching Power Supply is connected with STM32F407ZGT6, and STM32F407ZGT6 is connected with alarm, CC2530, CC2530Be connected with Zigbee module.
2. a kind of novel colliery underground low-tension network selective leakage protection device according to claim 1, is characterized in that: instituteState main line and each branch road that data acquisition node module is arranged on electric power system, this module is by zero sequence current mutual inductor and zero sequenceVoltage transformer gathers respectively zero-sequence current and residual voltage, gathers the data of coming and converts to by low pass filter and A/DThe discernible signal of CC2530, then be sent to central processing module through Zigbee module, if while having leak current fault, CC2530 warpZigbee module receives signal and controls the actuating of relay of respective branch, then controls feeding switch and acts accordingly.
3. a kind of novel colliery underground low-tension network selective leakage protection device according to claim 1, is characterized in that:Described central processing module is arranged on coordinator node place, and this module receives by Zigbee module the data that each branch road collection comes,And send STM32F407ZGT6 to through CC2530, then judge whether to occur leak current fault and leakage through STM32F407ZGT6 analysis dataElectricity branch road, if there is leak current fault to occur, STM32F407ZGT6 can send action command to electric leakage branch road through Zigbee module.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106370960A (en) * | 2016-08-15 | 2017-02-01 | 西安科技大学 | Mine's power grid electric leakage identification method based on the real component of the fault instantaneous positive sequence current |
CN107359592A (en) * | 2017-08-16 | 2017-11-17 | 国家电网公司 | A kind of SCM Based earth leakage protective detecting system |
CN107968380A (en) * | 2016-10-19 | 2018-04-27 | 贾海亮 | A kind of underground low-tension network selective leakage protection device |
CN107968381A (en) * | 2016-10-19 | 2018-04-27 | 贾海亮 | A kind of creepage protection equipment for electric vehicle based on field programmable gate array |
-
2015
- 2015-12-28 CN CN201521115610.2U patent/CN205265232U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106370960A (en) * | 2016-08-15 | 2017-02-01 | 西安科技大学 | Mine's power grid electric leakage identification method based on the real component of the fault instantaneous positive sequence current |
CN107968380A (en) * | 2016-10-19 | 2018-04-27 | 贾海亮 | A kind of underground low-tension network selective leakage protection device |
CN107968381A (en) * | 2016-10-19 | 2018-04-27 | 贾海亮 | A kind of creepage protection equipment for electric vehicle based on field programmable gate array |
CN107359592A (en) * | 2017-08-16 | 2017-11-17 | 国家电网公司 | A kind of SCM Based earth leakage protective detecting system |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20161228 |