CN105044442A - High-voltage live detection device - Google Patents
High-voltage live detection device Download PDFInfo
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- CN105044442A CN105044442A CN201510467753.8A CN201510467753A CN105044442A CN 105044442 A CN105044442 A CN 105044442A CN 201510467753 A CN201510467753 A CN 201510467753A CN 105044442 A CN105044442 A CN 105044442A
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Abstract
The invention discloses a high-voltage live detection device which comprises sensors, a high-voltage live display device and an anti-misoperation locking driving device. The number of the sensors is three; the three sensors are corresponding to A, B, C three phases of high-voltage live bodies respectively; the sensors collect current signals leaked by the high-voltage live bodies; the high-voltage live display device displays the live state of the high-voltage live bodies; and the anti-misoperation locking driving device is provided with an anti-misoperation device interface, wherein the anti-misoperation device interface is connected with an anti-misoperation device. When judgment result shows that the high-voltage live body is in a high-voltage live state, one path of signal is used for driving an LED of a display module to carry out display, and thus live display function is realized; and the other path of signal is transmitted to the anti-misoperation locking driving device for carrying out locking driving, and thus output locking function is realized.
Description
Technical field
The present invention relates to power technology, particularly relate to electrification in high voltage detection technique.
Background technology
HV live displaying is the whether charged a kind of device in index line road, and it can point out site operation personnel intuitively, to a certain degree prevent mistakenly entering charged chamber and maloperation; Secondly can carry out interface with error-proof device includes forced blocking in.External high voltage display device is integrated on set of equipments more, only possesses Presentation Function, does not have blocking function.
Summary of the invention
Technical matters to be solved by this invention is just to provide a kind of electrification in high voltage pick-up unit, while realizing HV live displaying, possesses blocking function.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of electrification in high voltage pick-up unit, comprise sensor, high voltage display device, anti-misoperation locking drive unit, described sensor is provided with three, described three sensors corresponding A, B, C three-phase high-voltage electrified body respectively, described sensor gathers the current signal that high-voltage charged body is revealed, described high voltage display device shows high-voltage charged body electriferous state, described anti-misoperation locking drive unit is provided with error-proof device interface, and described error-proof device interface is connected with error-proof device; When being electriferous state more than any mutually in three-phase high-voltage electrified body, described high voltage display device is then shown as electriferous state, and described anti-misoperation locking drive unit control error-proof device carries out locking simultaneously.
Preferably, described sensor is for detecting the Leakage Current signal of lightning arrester.
Preferably, described sensor adopts electromagnetic type punching current sensor, and described sensor adopts permalloy iron core.
Preferably, described sensor is parallel with TVS pipe at current output terminal.
Preferably, described error-proof device interface comprises electromagnetic lock interface and computer key interface.
Preferably, described computer key Interface integration has voltage detecting type circuit, current detection type circuit, resistance detection type circuit.
Preferably, described voltage detecting type circuit comprises resistance R1, resistance R2, voltage table, the HV live displaying output contact of series connection, and time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and voltage table detects that open-circuit voltage is 0V.
Preferably, described current detection type circuit comprises resistance R1, resistance R2, reometer, the HV live displaying output contact of series connection, and time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and reometer detects that short-circuit current is 0A.
Preferably, described resistance detection type circuit comprises resistance R1, resistance R2, the HV live displaying output contact of series connection, described HV live displaying output contact is parallel with an ohmmeter, time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and the resistance that ohmmeter detects is for infinitely great.
Preferably, described high voltage display device is provided with electrification in high voltage analysis module, described electrification in high voltage analysis module is analyzed the current signal that the high-voltage charged body of sensor collection is revealed, when judging in three-phase high-voltage electrified body more than any phase as electriferous state, described electrification in high voltage analysis module by omicronff signal transmission to display module and anti-misoperation locking drive unit.
The present invention gathers the signal of " A, B, C " three-phase high-voltage electrified body Leakage Current respectively by three sensors, and send high voltage display device to and compare judgement, when judged result is electrification in high voltage, one road signal shows for driving the LED of display module, complete charged Presentation Function, another road Signal transmissions, to anti-misoperation locking drive unit, for latch actuation, completes locking output function.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is structure principle chart of the present invention;
Fig. 2 is the schematic diagram of voltage detecting type circuit;
Fig. 3 is the schematic diagram of current detection type circuit;
Fig. 4 is the schematic diagram of resistance detection type circuit.
Embodiment
As shown in Figure 1, a kind of electrification in high voltage pick-up unit, comprise sensor, high voltage display device 10, anti-misoperation locking drive unit, described sensor is provided with three, described three sensors corresponding A, B, C three-phase high-voltage electrified body respectively, described sensor gathers the current signal that high-voltage charged body is revealed, described high voltage display device shows high-voltage charged body electriferous state, described anti-misoperation locking drive unit is provided with driving circuit 11 and error-proof device interface, and described error-proof device interface is connected with error-proof device; When in three-phase high-voltage electrified body, more than any phase (containing a phase, two-phase, three-phase) is for electriferous state, described high voltage display device is then shown as electriferous state, and described anti-misoperation locking drive unit control error-proof device carries out locking simultaneously.
Through investigation, existing Outdoor Trusses For Transformer Substation circuit all configures lightning arrester, and the Leakage Current signal of lightning arrester can be used as the sensor current signal of sensor, is input in display main frame, through processing accordingly, and the electriferous state of display device.
In addition, consider the actual conditions of in-site installation, safe operation, have employed electromagnetic type punching current sensor, select initial permeability high, the little permalloy of loss does iron core.This sensor accurately can detect the power current of 30uA ~ 15mA, accuracy 1%.There is fabulous temperature characterisitic and interference of electromagnetic field ability, meet the precise requirements of the equipment sampling under the interference of scene, complicated power station completely.
Sensor outer housing size: 42x40x18 (mm), empty diameter: the 22mm of punching, sensor outer housing is stainless steel substrates, and coil is 1000 circles, ER effect than 1000:1, input current 30 μ A-150mA, output current 30nA-150 μ A.Coil output line is 3 core shielding lines, and 2 is current output line, and another single line connects stainless steel casing.Sensor is 1% in the testing current accuracy of 30 μ A-150mA scopes; When no current inputs, measuring current value <5 μ A; If therefore measuring current value >30 μ A in actual use, and when being 50HZ (on-the-spot frequency has certain error) sine wave, can think that lightning arrester works in electriferous state.Described sensor is parallel with TVS pipe at current output terminal, when there being Lightning Over-voltage to occur, clamps down on current potential at certain magnitude of voltage, prevents from damaging collecting unit.
Wherein, high voltage display device is provided with electrification in high voltage analysis module, described electrification in high voltage analysis module is analyzed the current signal that the high-voltage charged body of sensor collection is revealed, when judging in three-phase high-voltage electrified body more than any phase as electriferous state, described electrification in high voltage analysis module by omicronff signal transmission to display module and anti-misoperation locking drive unit.
Current electric system mainly contains two kinds of error-proof devices, first is electromagnetic lock, the second is error proof locking system of microcomputer, anti-misoperation locking drive unit is fairly simple with coordinating of electromagnetic lock, as long as controlled the operating power of electromagnetic lock by the output contact of charged display, comparatively speaking, the interface of error proof locking system of microcomputer is just much complicated, usually have and detect idle contact, voltage and current 3 kinds, error-proof device interface of the present invention is exactly the unified interface simultaneously solving these 3 kinds of electrical verification modes.
Wherein, error-proof device interface comprises electromagnetic lock interface 12 and computer key interface 13.Electromagnetic lock interface 12 is for coordinating with electromagnetic lock, and described computer key Interface integration has voltage detecting type circuit, current detection type circuit, resistance detection type circuit, to adapt to multiple electrical verification mode.
As shown in Figure 2, described voltage detecting type circuit comprises resistance R1, resistance R2, voltage table, the HV live displaying output contact of series connection, time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and voltage table detects that open-circuit voltage is 0V.The voltage table measurement function of computer key by detecting 1, the magnitude of voltage of 2 judges that whether circuit charged, and write anti-mis-logical and carry out forced blocking grounding switch or forbid hanging temporary ground wire.
As shown in Figure 3, described current detection type circuit comprises resistance R1, resistance R2, reometer, the HV live displaying output contact of series connection, time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and reometer detects that short-circuit current is 0A.The reometer measurement function of computer key by detecting 3, the short-circuit current value of 4 judges that whether circuit charged, and write anti-mis-logical and carry out forced blocking grounding switch or forbid hanging temporary ground wire.
As shown in Figure 4, described resistance detection type circuit comprises resistance R1, resistance R2, the HV live displaying output contact of series connection, described HV live displaying output contact is parallel with an ohmmeter, time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and the resistance that ohmmeter detects is for infinitely great.The ohmmeter measurement function of computer key by detecting 5, the resistance value of 6 judges that whether circuit charged, and write anti-mis-logical and carry out forced blocking grounding switch or forbid hanging temporary ground wire.
The present invention is integrated with 3 kinds of electrical verification modes, but reality has only used one when wiring, such as: if anti-misoperation locking is voltage-type, so just with the circuit connection of voltage detecting type; If anti-misoperation locking is current mode, so just use current detection type circuit connection; If anti-misoperation locking is resistive type, so just with the circuit connection of resistance detection type.
The present invention can meet all error proof locking system of microcomputer computer key electrical verification demands, and wiring is simple.Error proof locking system of microcomputer computer key is handheld device; particularly during rainy weather operation; the hidden danger of electric leakage is had during electrical verification; this Interface design has R1, R2 to be current limiting safeguard resistor; electric current (voltage) is limited in safe range, prevents the personal injury that 220V voltage causes operating personnel.
Claims (10)
1. an electrification in high voltage pick-up unit, it is characterized in that: comprise sensor, high voltage display device, anti-misoperation locking drive unit, described sensor is provided with three, described three sensors corresponding A, B, C three-phase high-voltage electrified body respectively, described sensor gathers the current signal that high-voltage charged body is revealed, described high voltage display device shows high-voltage charged body electriferous state, described anti-misoperation locking drive unit is provided with error-proof device interface, and described error-proof device interface is connected with error-proof device; When being electriferous state more than any mutually in three-phase high-voltage electrified body, described high voltage display device is then shown as electriferous state, and described anti-misoperation locking drive unit control error-proof device carries out locking simultaneously.
2. a kind of electrification in high voltage pick-up unit according to claim 1, is characterized in that: described sensor is for detecting the Leakage Current signal of lightning arrester.
3. a kind of electrification in high voltage pick-up unit according to claim 2, is characterized in that: described sensor adopts electromagnetic type punching current sensor, and described sensor adopts permalloy iron core.
4. a kind of electrification in high voltage pick-up unit according to claim 2, is characterized in that: described sensor is parallel with TVS pipe at current output terminal.
5. a kind of electrification in high voltage pick-up unit according to Claims 1-4 any one, is characterized in that: described error-proof device interface comprises electromagnetic lock interface and computer key interface.
6. a kind of electrification in high voltage pick-up unit according to claim 5, is characterized in that: described computer key Interface integration has voltage detecting type circuit, current detection type circuit, resistance detection type circuit.
7. a kind of electrification in high voltage pick-up unit according to claim 6, it is characterized in that: described voltage detecting type circuit comprises resistance R1, resistance R2, voltage table, the HV live displaying output contact of series connection, time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and voltage table detects that open-circuit voltage is 0V.
8. a kind of electrification in high voltage pick-up unit according to claim 6, it is characterized in that: described current detection type circuit comprises resistance R1, resistance R2, reometer, the HV live displaying output contact of series connection, time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and reometer detects that short-circuit current is 0A.
9. a kind of electrification in high voltage pick-up unit according to claim 6, it is characterized in that: described resistance detection type circuit comprises resistance R1, resistance R2, the HV live displaying output contact of series connection, described HV live displaying output contact is parallel with an ohmmeter, time charged more than a phase any in three-phase high-voltage electrified body, HV live displaying output contact is opened, circuit disconnects, and the resistance that ohmmeter detects is for infinitely great.
10. a kind of electrification in high voltage pick-up unit according to claim 1, it is characterized in that: described high voltage display device is provided with electrification in high voltage analysis module, described electrification in high voltage analysis module is analyzed the current signal that the high-voltage charged body of sensor collection is revealed, when judging in three-phase high-voltage electrified body more than any phase as electriferous state, described electrification in high voltage analysis module by omicronff signal transmission to display module and anti-misoperation locking drive unit.
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| CN201510467753.8A CN105044442A (en) | 2015-08-03 | 2015-08-03 | High-voltage live detection device |
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Cited By (6)
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| CN107247178A (en) * | 2017-08-02 | 2017-10-13 | 安徽明都电气有限公司 | Sensor indirect method of checking electricity system and its inspection method for electrically that KYN28-12 is switched |
| CN107703399A (en) * | 2017-07-25 | 2018-02-16 | 国网江苏省电力公司南通供电公司 | High voltage display device |
| CN108732412A (en) * | 2018-04-17 | 2018-11-02 | 广东电网有限责任公司 | A kind of potential indicator |
| CN108802479A (en) * | 2018-05-26 | 2018-11-13 | 杭州顿恒科技有限公司 | A kind of equipotential high voltage electrified monitoring device |
| CN109629929A (en) * | 2018-12-13 | 2019-04-16 | 国网山东省电力公司潍坊供电公司 | A kind of outdoor high-voltage electrified display interlock apparatus and locking control method |
| CN110579637A (en) * | 2018-06-08 | 2019-12-17 | 长园共创电力安全技术股份有限公司 | High-voltage live detection method based on mutation algorithm |
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| CN204044232U (en) * | 2014-08-25 | 2014-12-24 | 武汉共创伏安科技有限公司 | A kind of high voltage display device by monitoring leakage current of an arrester |
| CN104423284A (en) * | 2013-09-06 | 2015-03-18 | 西安司坤电子科技有限公司 | High-voltage electrification displaying and locking device |
| CN204882697U (en) * | 2015-08-03 | 2015-12-16 | 国网浙江省电力公司台州供电公司 | High -voltage live -line detection device |
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| CN202260422U (en) * | 2011-10-13 | 2012-05-30 | 西安光远电气有限责任公司 | Induction type high voltage display locking device |
| EP2733808A1 (en) * | 2012-11-16 | 2014-05-21 | ABB Technology AG | Method and system for suppressing very fast transients |
| CN104423284A (en) * | 2013-09-06 | 2015-03-18 | 西安司坤电子科技有限公司 | High-voltage electrification displaying and locking device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107703399A (en) * | 2017-07-25 | 2018-02-16 | 国网江苏省电力公司南通供电公司 | High voltage display device |
| CN107247178A (en) * | 2017-08-02 | 2017-10-13 | 安徽明都电气有限公司 | Sensor indirect method of checking electricity system and its inspection method for electrically that KYN28-12 is switched |
| CN108732412A (en) * | 2018-04-17 | 2018-11-02 | 广东电网有限责任公司 | A kind of potential indicator |
| CN108802479A (en) * | 2018-05-26 | 2018-11-13 | 杭州顿恒科技有限公司 | A kind of equipotential high voltage electrified monitoring device |
| CN108802479B (en) * | 2018-05-26 | 2023-07-07 | 杭州顿恒科技有限公司 | Equipotential high-voltage live-line monitoring device |
| CN110579637A (en) * | 2018-06-08 | 2019-12-17 | 长园共创电力安全技术股份有限公司 | High-voltage live detection method based on mutation algorithm |
| CN109629929A (en) * | 2018-12-13 | 2019-04-16 | 国网山东省电力公司潍坊供电公司 | A kind of outdoor high-voltage electrified display interlock apparatus and locking control method |
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Application publication date: 20151111 |