CN105811255A - High-voltage live display locking device - Google Patents
High-voltage live display locking device Download PDFInfo
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- CN105811255A CN105811255A CN201410832413.6A CN201410832413A CN105811255A CN 105811255 A CN105811255 A CN 105811255A CN 201410832413 A CN201410832413 A CN 201410832413A CN 105811255 A CN105811255 A CN 105811255A
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Abstract
The invention provides a high-voltage live display locking device which comprises a sensing unit, a signal amplifying unit connected to the output end of the sensing unit, an A/D sampling unit which is connected to the output end of the signal amplifying unit, a signal processing and control unit which is connected to the output end of the A/D sampling unit, an display unit which is connected to the output end of the signal processing and control unit, a linkage signal output unit, and a power supply unit which supplies power to each unit. The sensing unit is a contact sensor or sensing sensor. The high-voltage live display locking device can be adapted to the input of signals of two different orders of magnitude of the contact sensor and the sensing sensor. The device provides a node to a microprocessor type electrical misoperation prevention device, the misoperation of 6kV, 10kV and 35kV switchgear back cabinet door is effectively prevented, the power supply can be automatically switched, and the high-voltage live display locking device has a function of outputting a lock signal in loss of power.
Description
Technical field
The present invention relates to a kind of microprocessor-based products of power system that is applied in and prevent the high-voltage electriferous display locking device in electric misoperation system.
Background technology
Along with the raising day by day of the anti-error level of transformer station, the expanding day of anti-misoperation coverage rate, the serious accident in transformer station is occurred to reduce year by year.But, owing to current transformer station middle-high voltage switch " five prevent " block sytem exists hidden danger, switch cubicle anti mis-closedown function imperfection, it is impossible to for judging the whether charged offer foundation of circuit there is certain security risk in operation maintenance personnel grid switching operation and maintainer's upkeep operation process.
Summary of the invention
The present invention is to solve the problems referred to above that prior art exists, it is provided that a kind of function with forced blocking, thus effectively preventing the maloperation to door of switch cabinet, ensureing the high-voltage electriferous display locking device of the safety in production of power system.
The high-voltage electriferous display locking device of the present invention, it is characterized in that: includes sensing unit, be connected on the signal amplification unit of sensing unit outfan, be connected on the A/D sampling unit of signal amplification unit outfan, the signal processing being connected on A/D sampling unit outfan and control unit, the display unit being connected on signal processing and control unit outfan and interlocking signal output unit and the power supply power supply unit powered for each unit, and sensing unit adopts touch sensor or inductosyn；
Described signal amplification unit is connected to the feedback circuit one of corresponding inductosyn and the feedback circuit two of corresponding touch sensor；
Described power supply power supply unit includes the DC source branch road that is made up of the AC/DC module connected and diode D1 and the battery that is made up of the battery connected and diode D2 is powered branch road, described DC source branch road and battery branch road of powering is in parallel；
Described interlocking signal output unit is to be made up of reset chip, on-off circuit and magnetic latching relay, one group of normally opened node of described magnetic latching relay is output control terminal, and the output control terminal of described signal processing and control unit is connected with the input of on-off circuit.
The invention has the beneficial effects as follows:
1, touch sensor and the input of two kinds of varying number level signals of inductosyn can be suitable for, both contact measurement can have been carried out, vicarious detection can be carried out again, make in-site installation convenient, same transformer station is frequently present of touch sensor output and inductosyn output, so adopts a kind of high-voltage electriferous display locking device to make easy for installation；
2, high voltage display device is that microcomputer type prevents electric misoperation device from providing passive bus output by the one of magnetic latching relay group of normally opened node, there is forced blocking function, therefore operator cannot open electrical body cabinet door, ensures the safety in production of power system.Device adopts reset chip that magnetic latching relay is carried out dead electricity control, when this device dead electricity, when running voltage drops to reset chip threshold value, reset chip reset output signal makes magnetic latching relay action by on-off circuit, make device should be able to ensure magnetic latching relay action once under power failure state, the normally opened node Guan Bi of magnetic latching relay.
3, supply voltage Parallel opertation is adopted, do not need the additional devices such as relay and realize the power supply automatic switching function (220VAC and battery) of high-voltage electriferous display locking device, can realize automatically switching, if power supply 220V dead electricity, automatically switch to battery to power, when 220V power supply is powered, battery power consumption is 0W.Export direct current by power module to seal in diode and power with battery that to seal in diode then in parallel to system power supply, generation leakage current when adopting 2 diodes to prevent from simultaneously powering.
4, utilize touch sensor and inductosyn that electrical body is detected, it is capable of out cabinet electrical verification in front of the door operation, electrical verification does not pass through cannot open door of switch cabinet, there is the function of forced blocking, it is effectively prevented the maloperation to 6kV, 10kV and 35kV switch cubicle rear cabinet door, ensures the safety in production of power system.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of the present invention；
Fig. 2 is the schematic block circuit diagram of interlocking signal output unit；
Fig. 3 is the circuit theory diagrams of power supply power supply unit.
Detailed description of the invention
As shown in Figure 1, this high-voltage electriferous display locking device, including sensing unit, being connected on the signal amplification unit of sensing unit outfan, be connected on the A/D sampling unit of signal amplification unit outfan, the signal processing being connected on A/D sampling unit outfan and control unit, the display unit being connected on signal processing and control unit outfan and interlocking signal output unit and the power supply power supply unit powered for each unit, sensing unit adopts touch sensor or inductosyn；
The feedback circuit one of corresponding inductosyn and the feedback circuit two of corresponding touch sensor it is connected between the outfan of described signal amplification unit and input；By selecting feedback impedance value in feedback circuit one and feedback circuit two to adjust amplification, it is possible to access inductosyn and the two distinct types of signal source of touch sensor.
As shown in Figure 2, described interlocking signal output unit is to be made up of reset chip, on-off circuit and magnetic latching relay, being connected to resistance R1 and audion D3 between reset chip and on-off circuit, one group of normally opened node of described magnetic latching relay is that output control terminal prevents electric misoperation device to be connected with microcomputer type.The reset output terminal of described reset chip is connected with the input of on-off circuit with the output control terminal of signal processing and control unit through audion D3, the control end of co-controlling magnetic latching relay.
The normally opened node Guan Bi of magnetic latching relay prevents electric misoperation device from providing forced blocking function for microcomputer type, when by sensing unit, high-voltage electriferous display locking device detects that electrical body band electric control relay closes, the normally opened node Guan Bi of magnetic latching relay, operator must be off state if it is desired to open this node of electrical body cupboard door lock, it is achieved thereby that the function of forced blocking.
As it is shown on figure 3, described power supply power supply unit, powering branch road including the DC source branch road being made up of the AC/DC module connected and diode D1 and the battery that is made up of the battery connected and diode D2, described DC source branch road and battery branch road of powering is in parallel.Employing low-voltage is in parallel, and namely battery is in parallel with DC source, leakage of current when preventing from simultaneously powering by sealing in two diodes.
Claims (1)
1. high-voltage electriferous display locking device, it is characterized in that: include sensing unit, be connected on the signal amplification unit of sensing unit outfan, be connected on the A/D sampling unit of signal amplification unit outfan, the signal processing being connected on A/D sampling unit outfan and control unit, the display unit being connected on signal processing and control unit outfan and interlocking signal output unit and the power supply power supply unit powered for each unit, sensing unit adopts touch sensor or inductosyn；
Described signal amplification unit is connected to the feedback circuit one of corresponding inductosyn and the feedback circuit two of corresponding touch sensor；
Described power supply power supply unit includes the DC source branch road that is made up of the AC/DC module connected and diode D1 and the battery that is made up of the battery connected and diode D2 is powered branch road, described DC source branch road and battery branch road of powering is in parallel；
Described interlocking signal output unit is to be made up of reset chip, on-off circuit and magnetic latching relay, one group of normally opened node of described magnetic latching relay is output control terminal, and the output control terminal of described signal processing and control unit is connected with the input of on-off circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832413.6A CN105811255B (en) | 2014-12-29 | 2014-12-29 | High-voltage electriferous display locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832413.6A CN105811255B (en) | 2014-12-29 | 2014-12-29 | High-voltage electriferous display locking device |
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| Publication Number | Publication Date |
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| CN105811255A true CN105811255A (en) | 2016-07-27 |
| CN105811255B CN105811255B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410832413.6A Active CN105811255B (en) | 2014-12-29 | 2014-12-29 | High-voltage electriferous display locking device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336824A (en) * | 2018-03-16 | 2018-07-27 | 珠海康晋电气股份有限公司 | Anti-misoperation locking circuit and automatic power distribution system |
| CN109030918A (en) * | 2018-08-20 | 2018-12-18 | 江苏邦泰电气有限公司 | A kind of HV live displaying locking system |
| CN113436410A (en) * | 2021-06-02 | 2021-09-24 | 内蒙古蒙电华能热电股份有限公司乌海发电厂 | False opening alarm device of high tension switchgear backplate |
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| CN2927065Y (en) * | 2006-04-25 | 2007-07-25 | 孙登峰 | High-pressure electric display locker of three-phase controlled inductive |
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| CN202013624U (en) * | 2011-05-05 | 2011-10-19 | 李实亿 | Watchdog device for high voltage switch cabinet |
| CN203385783U (en) * | 2013-06-27 | 2014-01-08 | 成都国能龙源科技有限公司 | Low-power intelligent high-voltage charged display locking device based on AVR microcontroller |
| CN204290074U (en) * | 2014-12-29 | 2015-04-22 | 辽宁拓新电力电子有限公司 | High-voltage electriferous display locking device |
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2014
- 2014-12-29 CN CN201410832413.6A patent/CN105811255B/en active Active
Patent Citations (7)
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| CN2697663Y (en) * | 2004-04-15 | 2005-05-04 | 许一声 | High-voltage charged display device |
| CN2927065Y (en) * | 2006-04-25 | 2007-07-25 | 孙登峰 | High-pressure electric display locker of three-phase controlled inductive |
| CN201130213Y (en) * | 2007-11-15 | 2008-10-08 | 广州锐翔电力工程设备有限公司 | High pressure electrification display trigger device for induction high pressure armored cable of electrification state |
| CN101692534A (en) * | 2009-06-24 | 2010-04-07 | 张敬敏 | Blocking against misoperation, alarming and protecting device of high-voltage switch cabinet |
| CN202013624U (en) * | 2011-05-05 | 2011-10-19 | 李实亿 | Watchdog device for high voltage switch cabinet |
| CN203385783U (en) * | 2013-06-27 | 2014-01-08 | 成都国能龙源科技有限公司 | Low-power intelligent high-voltage charged display locking device based on AVR microcontroller |
| CN204290074U (en) * | 2014-12-29 | 2015-04-22 | 辽宁拓新电力电子有限公司 | High-voltage electriferous display locking device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336824A (en) * | 2018-03-16 | 2018-07-27 | 珠海康晋电气股份有限公司 | Anti-misoperation locking circuit and automatic power distribution system |
| CN109030918A (en) * | 2018-08-20 | 2018-12-18 | 江苏邦泰电气有限公司 | A kind of HV live displaying locking system |
| CN113436410A (en) * | 2021-06-02 | 2021-09-24 | 内蒙古蒙电华能热电股份有限公司乌海发电厂 | False opening alarm device of high tension switchgear backplate |
| CN113436410B (en) * | 2021-06-02 | 2022-12-02 | 内蒙古蒙电华能热电股份有限公司乌海发电厂 | False opening alarm device of high tension switchgear backplate |
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| Publication number | Publication date |
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| CN105811255B (en) | 2018-06-26 |
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