CN107238776A - It is a kind of to prevent detection warning device of the transformer station with safety measure power transmission - Google Patents
It is a kind of to prevent detection warning device of the transformer station with safety measure power transmission Download PDFInfo
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- CN107238776A CN107238776A CN201710390822.9A CN201710390822A CN107238776A CN 107238776 A CN107238776 A CN 107238776A CN 201710390822 A CN201710390822 A CN 201710390822A CN 107238776 A CN107238776 A CN 107238776A
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- Prior art keywords
- safety measure
- power transmission
- transformer station
- warning device
- conductive clamp
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Emergency Alarm Devices (AREA)
Abstract
Detection warning device of the transformer station with safety measure power transmission is prevented the invention discloses a kind of, so that the serious accident of anti-stop-band safety measure power transmission occurs.Operation operating personnel are when progress power failure equipments are resumed operation, need first to remove all safety measures of installing, the ground wire of the present invention is equally installed between power failure equipments and grounding net of transformer substation temporarily, if having left safety measure by power equipment, a conducting loop will be formed, so as to triggering device alarm, warning operation operating personnel forbid power transmission；Compared with conventional method, apparatus of the present invention are skillfully constructed, easy to be easy-to-use, safe and reliable, while solving the pressure-resistant problem that device is directly contacted and produced with power failure equipments by scattered and electric charge release the method for voltage.
Description
Technical field
The present invention relates to detection technique field of the transformer station with safety measure power transmission is prevented, more particularly to one kind prevents power transformation
Stand the detection warning device with safety measure power transmission.
Background technology
Transformer station is when carrying out dead line interval or bus recovers power transmission operation, it is necessary to which inspection will recover the circuit of power transmission
The safety that interval or bus are installed（Ground connection）Measure is all removed, and power transmission can be carried out after indeed all removing by checking；Once
Generation band safety measure power transmission behavior, it will cause serious equipment and human casualty accident, or even jeopardize the safety of bulk power grid
Stable operation.Up to now, the method for power transmission of the transformer station with safety measure is prevented both at home and abroad mainly two kinds：Manually patrol
Five anti-devices are looked into and installed to inspection.Manual patrol inspection visual inspection and is removed all at the scene by Substation Operating personnel
Power equipment safety measure, rely on the Specialized Quality and sense of responsibility of site operation personnel, reliability and security is good；Install
Five anti-devices are to prevent misoperation apparatus by being installed on transformer station's power equipment, and each single item operation of operating personnel need to pass through
The logic judgment of error-proof device can be performed, security it is higher but it is easy break down, reliability is still needed lifting, and operation is more
Cumbersome, specialized capability and learning ability to operating personnel require higher.
Patent such as Application No. 201511033181.9 discloses a kind of anti-control system of transformer station five, including：Five prevent
Main frame, display, network controller, wireless router, for electric screen cabinet, centralized control center, ground wire manager main frame, detection breech-block
Structure and computer key；Five anti-main frames are connected with display, centralized control center, network controller and ground wire manager main frame；For
Multiple grounding wire devices are provided with electric screen cabinet；Network controller is connected with wireless router, and wireless router is used for computer key
Information exchange between spoon and five anti-main frames；Detection blocking mechanism is connected with ground wire manager main frame；Computer key is used for supplying
Electric screen cabinet is unlocked operation and lock operation；Computer key is by control signal to being unlocked operation for electric screen cabinet or closing
Lock operation, five anti-main frames control display to show the state for electric screen cabinet in real time according to control signal.And for example Application No.
A kind of five-preventing system for Intelligent transformer station disclosed in 201710059972.1 patent, the five-preventing system is located at intelligence
In the monitoring system for changing transformer station, it is connected respectively with the intelligent terminal and terminal device of Intelligent transformer station, the five-preventing system
Including monitoring system backstage lock modules, wall lock modules and electronic loop lock modules, the monitoring system backstage is closed
Lock module is connected with the monitoring data storehouse in monitoring system and electronic loop lock modules respectively, the wall lock modules with
Intelligent terminal is connected, and the electronic loop lock modules are connected with terminal device.It is disadvantageous in that：Easily break down,
Reliability is still needed lifting, and operates relatively complicated, and specialized capability and learning ability to operating personnel require higher.
The content of the invention
The present invention alarms there is provided a kind of detection for preventing transformer station with safety measure power transmission in order to solve the above problems and filled
Put, pass through power equipment, safety（Ground connection）Measure and grounding net of transformer substation turn on loop to constitute, and apply DC voltage, triggering
Warning device detects that safety measure whether is left on power equipment, and the present invention is easy, ingenious, reliable.
It is a kind of to prevent detection warning device of the transformer station with safety measure power transmission, including be connected respectively with A, B, C three-phase
Binding clip on binding clip, A, B, C three-phase is connected after being linked together by wire with electric discharge valve, the electric discharge valve and electricity
Anti-, resistance, dc source, audible-visual annunciator, grounding net of transformer substation series connection.
The dc source is battery.
The electric discharge valve is circular metal body, and the week of the circular metal body, which surveys, is evenly equipped with several acupunctures.
The audible-visual annunciator is connected with binding clip.
The binding clip includes upper conductive clamp and the lower conductive clamp that is hinged therewith, the upper conductive clamp and/or under
The clamping part of conductive clamp provided with can turn conducting probe.
Further, the conducting probe is provided with insulator cap.
Further, the conducting probe is threadedly coupled with the clamping part of upper conductive clamp and/or lower conductive clamp.
Further, the clamping part of the conducting probe and upper conductive clamp and/or lower conductive clamp is compressed by sliding
Governor motion is connected.
Further, described slide compresses governor motion including being arranged on the slide opening of clamping part, being arranged on clamping part slide opening
Several blind holes of both sides and the slide plate being arranged under clamping part, the slide plate both sides be provided with blind hole to inserted link, it is described
Slide plate is provided with the conducting probe being threadedly coupled therewith, is provided between the needle handle end of the conducting probe and clamping part and holds out against spring.
Further, the spring that holds out against has collar thrust bearing.
Further, slide opening both sides blind hole is symmetricly set on clamping part.
Further, the blind hole is hierarchic structure.
Further, the conducting probe needle tip is helicitic texture.
The final purpose of the present invention is to check whether transformer station is removed completely by the safety measure of power equipment, to realize this
One purpose is accomplished by finding the difference after being left safety measure by power equipment and removed completely, and inventor is in transformer station's O＆M
Find be reliable ground by all safety measures of power equipment in work and be connected with the grounded screen of transformer station.Cause
This, apparatus of the present invention use dc source-audible-visual annunciator-resistance-inductance-electric discharge valve-binding clip-bus-safety measure-change
The conducting loop of power station grounded screen, it can be seen that once bus（By power equipment）Safety measure above is removed, with last time
Road can not just be turned on, audible-visual annunciator just stop alarm；In addition, apparatus of the present invention want to realize expected function, it is necessary to solve
The problem of device is pressure-resistant.Transformer station's power failure equipments can form electricity due to being influenceed by periphery high voltage alive equipment on itself
Very big induced electricity and electrostatic is pressed, after power failure equipments safety measure is all removed, this hair will be destroyed when touching power failure equipments
The safe and reliable operation of bright device, or even threaten personal safety.Apparatus of the present invention employed in R＆D process dispersion voltage and
The two methods concentrated electric charge and discharged carry out the pressure-resistant problem of solving device, to avoid making apparatus of the present invention undertake all induced electricities
And electrostatic potential, we have installed a divider resistance and inductance additional in warning device upper end to realize that voltage disperses, while in iron
A metal thorn-like electric discharge valve is installed between core and binding clip, by the principle of electrostatic charge point discharge, by the bus that has a power failure
Electrostatic charge concentrate on metal thorn-like electric discharge valve and discharge in atmosphere, further reduction dc source and sound and light alarm
The energy of a charge that device is born, so as to solve the pressure-resistant problem of detection warning device, it is ensured that apparatus of the present invention are safe and reliable
Operation；The conductive clip of the present invention is by the clamping part in upper conductive clamp and/or lower conductive clamp, and fastening spring is sleeved on company
In spindle, connecting bushing in the axle bed of upper and lower conductive clamp, fastening spring two ends in the opposite direction respectively card be pressed in it is upper and lower
On the upper and lower surface of conductive clamp, upper and lower conductive clamp retaining clip is held contact, can open it in handle end plus-pressure,
The handle end outer surface of upper and lower conductive clamp or the upper and lower conductive clip external surface in addition to mouth is clamped are fixed with insulation sleeve, will survey
Examination folder is added on ABC three-phase conducting wires, when in use, is punctured conductor insulation sheath by rotating conducting probe and then is connect with wire
Touch, be easy to use, good connecting effect.Further, spring is held out against by compressing, sliding skateboard adjusting slider is in the position of clamping part
Put, so as to clamp the wire of different-diameter, the spring that holds out against has collar thrust bearing, rotated light.
Brief description of the drawings
Utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 apparatus of the present invention structural representations；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is the overlooking the structure diagram of clamping part of the present utility model；
Fig. 4 is A-A structural representations in Fig. 3；
Fig. 5 is the structural representation of the utility model blind hole.
Embodiment
Embodiment 1：As Figure 1-5, it will run at ground wire A, B, C three-phase binding clip to the convergence used in operation and cut
Disconnected, as apparatus of the present invention and the contact portion of power failure equipments, operating method is consistent with ground wire, with insulating bar by three phase connections
Folder is fixed on the three-phase drainage thread of power failure equipments, it is ensured that simple and easy to do during the use of apparatus of the present invention；
At apparatus of the present invention A, B, C three-phase binding clip convergence lower end installing circular metal body put electric valve 26, by power failure equipments because quiet
Electric induction and a large amount of electrostatic charges for assembling discharge here, it is to avoid threaten apparatus of the present invention lower end dc source 23 and alarm
The safe and reliable operation of device；Installing partial pressure reactance 25 and resistance 24 in electric discharge valve lower end, to share power failure equipments on periphery
Ac induction voltage and DC voltage component are produced under the influence of high voltage alive equipment, it is to avoid threaten apparatus of the present invention lower end straight
Flow the safe and reliable operation of power supply and warning device 22；Warning device 22 uses audible-visual annunciator, and apparatus of the present invention are close to ground
Part installing dc source and audible-visual annunciator, realize the detection to power failure equipments safety measure and warning function；In acousto-optic
Conductor grip is installed in alarm lower end, and conductor grip is identical with the conductor grip on ABC three-phases, and connection transformer station is sandwiched when using and is connect
On the grounding body of earth mat, it is ensured that reliable loop is formed between apparatus of the present invention and earth mat, safety measure and power failure equipments.The present invention
Ground wire be installed in temporarily between power failure equipments and grounding net of transformer substation, if having left safety measure by power equipment, it will
A conducting loop is formed, so that triggering device alarm, warning operation operating personnel, forbid power transmission.
The conductor grip 21 includes upper conductive clamp 1 and the lower conductive clamp 11 that is hinged therewith, the upper conductive clamp with/
Or the clamping part of lower conductive clamp provided with can turn conducting probe 10.
The conducting probe is provided with insulator cap 5.
The conducting probe is threadedly coupled with the clamping part of upper conductive clamp and/or lower conductive clamp.
The clamping part of the conducting probe and upper conductive clamp and/or lower conductive clamp is connected by sliding compression governor motion
Connect.
If described slide compresses governor motion including being arranged on the slide opening 3 of clamping part, being arranged on clamping part slide opening both sides
Dry blind hole 2 and the slide plate 8 being arranged under clamping part, the slide plate both sides be provided with blind hole to inserted link 4, on the slide plate
It is provided with provided with the conducting probe being threadedly coupled therewith, between the needle handle end of the conducting probe and clamping part and holds out against spring 6.
Slide opening both sides blind hole is symmetricly set on clamping part.
The blind hole is hierarchic structure.
The conducting probe needle tip is helicitic texture.
Embodiment 2：As Figure 1-5, it will run at ground wire A, B, C three-phase binding clip to the convergence used in operation and cut
Disconnected, as apparatus of the present invention and the contact portion of power failure equipments, operating method is consistent with ground wire, with insulating bar by three phase connections
Folder is fixed on the three-phase drainage thread of power failure equipments, it is ensured that simple and easy to do during the use of apparatus of the present invention；
At apparatus of the present invention A, B, C three-phase binding clip convergence lower end installing circular metal body put electric valve 26, by power failure equipments because quiet
Electric induction and a large amount of electrostatic charges for assembling discharge here, it is to avoid threaten apparatus of the present invention lower end dc source 23 and alarm
The safe and reliable operation of device；Installing partial pressure reactance 25 and resistance 24 in electric discharge valve lower end, to share power failure equipments on periphery
Ac induction voltage and DC voltage component are produced under the influence of high voltage alive equipment, it is to avoid threaten apparatus of the present invention lower end straight
Flow the safe and reliable operation of power supply and warning device 22；Warning device 22 uses audible-visual annunciator, and apparatus of the present invention are close to ground
Part installing dc source and audible-visual annunciator, realize the detection to power failure equipments safety measure and warning function；In acousto-optic
Conductor grip is installed in alarm lower end, and conductor grip is identical with the conductor grip on ABC three-phases, and connection transformer station is sandwiched when using and is connect
On the grounding body of earth mat, it is ensured that reliable loop is formed between apparatus of the present invention and earth mat, safety measure and power failure equipments.
The conductor grip 21 includes upper conductive clamp 1 and the lower conductive clamp 11 that is hinged therewith, the upper conductive clamp with/
Or the clamping part of lower conductive clamp provided with can turn conducting probe 10.
The conducting probe is provided with insulator cap 5.
The conducting probe is threadedly coupled with the clamping part of upper conductive clamp and/or lower conductive clamp.
The clamping part of the conducting probe and upper conductive clamp and/or lower conductive clamp is connected by sliding compression governor motion
Connect.
If described slide compresses governor motion including being arranged on the slide opening 3 of clamping part, being arranged on clamping part slide opening both sides
Dry blind hole 2 and the slide plate 8 being arranged under clamping part, the slide plate both sides be provided with blind hole to inserted link 4, on the slide plate
It is provided with provided with the conducting probe being threadedly coupled therewith, between the needle handle end of the conducting probe and clamping part and holds out against spring 6.
The spring that holds out against has collar thrust bearing 7.
Slide opening both sides blind hole is symmetricly set on clamping part.
The conducting probe needle tip is helicitic texture.
Embodiment 3：As Figure 1-5, it will run at ground wire A, B, C three-phase binding clip to the convergence used in operation and cut
Disconnected, as apparatus of the present invention and the contact portion of power failure equipments, operating method is consistent with ground wire, with insulating bar by three phase connections
Folder is fixed on the three-phase drainage thread of power failure equipments, it is ensured that simple and easy to do during the use of apparatus of the present invention；
At apparatus of the present invention A, B, C three-phase binding clip convergence lower end installing circular metal body put electric valve 26, by power failure equipments because quiet
Electric induction and a large amount of electrostatic charges for assembling discharge here, it is to avoid threaten apparatus of the present invention lower end dc source 23 and alarm
The safe and reliable operation of device；Installing partial pressure reactance 25 and resistance 24 in electric discharge valve lower end, to share power failure equipments on periphery
Ac induction voltage and DC voltage component are produced under the influence of high voltage alive equipment, it is to avoid threaten apparatus of the present invention lower end straight
Flow the safe and reliable operation of power supply and warning device 22；Warning device 22 uses audible-visual annunciator, and apparatus of the present invention are close to ground
Part installing dc source and audible-visual annunciator, realize the detection to power failure equipments safety measure and warning function；In acousto-optic
Conductor grip is installed in alarm lower end, and conductor grip is identical with the conductor grip on ABC three-phases, and connection transformer station is sandwiched when using and is connect
On the grounding body of earth mat, it is ensured that reliable loop is formed between apparatus of the present invention and earth mat, safety measure and power failure equipments.
The conductor grip 21 includes upper conductive clamp 1 and the lower conductive clamp 11 that is hinged therewith, the upper conductive clamp with/
Or the clamping part of lower conductive clamp provided with can turn conducting probe 10.
The conducting probe is provided with insulator cap 5.
The conducting probe is threadedly coupled with the clamping part of upper conductive clamp and/or lower conductive clamp.
The clamping part of the conducting probe and upper conductive clamp and/or lower conductive clamp is connected by sliding compression governor motion
Connect.
If described slide compresses governor motion including being arranged on the slide opening 3 of clamping part, being arranged on clamping part slide opening both sides
Dry blind hole 2 and the slide plate 8 being arranged under clamping part, the slide plate both sides be provided with blind hole to inserted link 4, on the slide plate
It is provided with provided with the conducting probe being threadedly coupled therewith, between the needle handle end of the conducting probe and clamping part and holds out against spring 6.
The spring that holds out against has collar thrust bearing 7.
Slide opening both sides blind hole is symmetricly set on clamping part.
The blind hole is hierarchic structure.
Embodiment 4：As Figure 1-5, it will run at ground wire A, B, C three-phase binding clip to the convergence used in operation and cut
Disconnected, as apparatus of the present invention and the contact portion of power failure equipments, operating method is consistent with ground wire, with insulating bar by three phase connections
Folder is fixed on the three-phase drainage thread of power failure equipments, it is ensured that simple and easy to do during the use of apparatus of the present invention；
At apparatus of the present invention A, B, C three-phase binding clip convergence lower end installing circular metal body put electric valve 26, by power failure equipments because quiet
Electric induction and a large amount of electrostatic charges for assembling discharge here, it is to avoid threaten apparatus of the present invention lower end dc source 23 and alarm
The safe and reliable operation of device；Installing partial pressure reactance 25 and resistance 24 in electric discharge valve lower end, to share power failure equipments on periphery
Ac induction voltage and DC voltage component are produced under the influence of high voltage alive equipment, it is to avoid threaten apparatus of the present invention lower end straight
Flow the safe and reliable operation of power supply and warning device 22；Warning device 22 uses audible-visual annunciator, and apparatus of the present invention are close to ground
Part installing dc source and audible-visual annunciator, realize the detection to power failure equipments safety measure and warning function；In acousto-optic
Conductor grip is installed in alarm lower end, and conductor grip is identical with the conductor grip on ABC three-phases, and connection transformer station is sandwiched when using and is connect
On the grounding body of earth mat, it is ensured that reliable loop is formed between apparatus of the present invention and earth mat, safety measure and power failure equipments.
The conductor grip 21 includes upper conductive clamp 1 and the lower conductive clamp 11 that is hinged therewith, the upper conductive clamp with/
Or the clamping part of lower conductive clamp provided with can turn conducting probe 10.
The conducting probe is provided with insulator cap 5.
The conducting probe is threadedly coupled with the clamping part of upper conductive clamp and/or lower conductive clamp.
The clamping part of the conducting probe and upper conductive clamp and/or lower conductive clamp is connected by sliding compression governor motion
Connect.
If described slide compresses governor motion including being arranged on the slide opening 3 of clamping part, being arranged on clamping part slide opening both sides
Dry blind hole 2 and the slide plate 8 being arranged under clamping part, the slide plate both sides be provided with blind hole to inserted link 4, on the slide plate
It is provided with provided with the conducting probe being threadedly coupled therewith, between the needle handle end of the conducting probe and clamping part and holds out against spring 6.
The spring that holds out against has collar thrust bearing 7.
Slide opening both sides blind hole is symmetricly set on clamping part.
The blind hole is hierarchic structure.
The conducting probe needle tip is helicitic texture.
The final purpose of the present invention is to check whether transformer station is removed completely by the safety measure of power equipment, to realize this
One purpose is accomplished by finding the difference after being left safety measure by power equipment and removed completely, and inventor is in transformer station's O＆M
Find be reliable ground by all safety measures of power equipment in work and be connected with the grounded screen of transformer station.Cause
This, apparatus of the present invention use dc source-audible-visual annunciator-resistance-inductance-electric discharge valve-binding clip-bus-safety measure-change
The conducting loop of power station grounded screen, it can be seen that once bus（By power equipment）Safety measure above is removed, with last time
Road can not just be turned on, audible-visual annunciator just stop alarm；In addition, apparatus of the present invention want to realize expected function, it is necessary to solve
The problem of device is pressure-resistant.Transformer station's power failure equipments can form electricity due to being influenceed by periphery high voltage alive equipment on itself
Very big induced electricity and electrostatic is pressed, after power failure equipments safety measure is all removed, this hair will be destroyed when touching power failure equipments
The safe and reliable operation of bright device, or even threaten personal safety.Apparatus of the present invention employed in R＆D process dispersion voltage and
The two methods concentrated electric charge and discharged carry out the pressure-resistant problem of solving device, to avoid making apparatus of the present invention undertake all induced electricities
And electrostatic potential, we have installed a divider resistance and inductance additional in warning device upper end to realize that voltage disperses, while in iron
A metal thorn-like electric discharge valve is installed between core and binding clip, by the principle of electrostatic charge point discharge, by the bus that has a power failure
Electrostatic charge concentrate on metal thorn-like electric discharge valve and discharge in atmosphere, further reduction dc source and sound and light alarm
The energy of a charge that device is born, so as to solve the pressure-resistant problem of detection warning device, it is ensured that apparatus of the present invention are safe and reliable
Operation；The conductive clip of the present invention is by the clamping part in upper conductive clamp and/or lower conductive clamp, and fastening spring is sleeved on company
In spindle, connecting bushing in the axle bed of upper and lower conductive clamp, fastening spring two ends in the opposite direction respectively card be pressed in it is upper and lower
On the upper and lower surface of conductive clamp, upper and lower conductive clamp retaining clip is held contact, can open it in handle end plus-pressure,
The handle end outer surface of upper and lower conductive clamp or the upper and lower conductive clip external surface in addition to mouth is clamped are fixed with insulation sleeve, will survey
Examination folder is added on ABC three-phase conducting wires, when in use, is punctured conductor insulation sheath by rotating conducting probe and then is connect with wire
Touch, be easy to use, good connecting effect.Further, spring is held out against by compressing, sliding skateboard adjusting slider is in the position of clamping part
Put, so as to clamp the wire of different-diameter, the spring that holds out against has collar thrust bearing, rotated light.
Claims (6)
1. a kind of prevent detection warning device of the transformer station with safety measure power transmission, it is characterised in that：Including with A, B, C three-phase separate
Binding clip on the binding clip not connected, A, B, C three-phase is connected after being linked together by wire with electric discharge valve, described to put
Electric valve is connected with reactance, resistance, dc source, audible-visual annunciator, grounding net of transformer substation.
2. prevent detection warning device of the transformer station with safety measure power transmission as claimed in claim 1, it is characterised in that：It is described
Dc source is battery.
3. prevent detection warning device of the transformer station with safety measure power transmission as claimed in claim 2, it is characterised in that：It is described
Electric discharge valve is circular metal body, and the week of the circular metal body, which surveys, is evenly equipped with several acupunctures.
4. prevent detection warning device of the transformer station with safety measure power transmission as claimed in claim 3, it is characterised in that：It is described
Audible-visual annunciator is connected with binding clip.
5. prevent detection warning device of the transformer station with safety measure power transmission as claimed in claim 4, it is characterised in that：It is described
Binding clip includes upper conductive clamp and the lower conductive clamp being hinged therewith, the folder of the upper conductive clamp and/or lower conductive clamp
Hold portion provided with can turn conducting probe.
6. prevent detection warning device of the transformer station with safety measure power transmission as claimed in claim 5, it is characterised in that：It is described
Conducting probe is provided with insulator cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390822.9A CN107238776B (en) | 2017-05-27 | 2017-05-27 | Detection alarm device for preventing transformer substation from transmitting power with safety measures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710390822.9A CN107238776B (en) | 2017-05-27 | 2017-05-27 | Detection alarm device for preventing transformer substation from transmitting power with safety measures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107238776A true CN107238776A (en) | 2017-10-10 |
| CN107238776B CN107238776B (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710390822.9A Active CN107238776B (en) | 2017-05-27 | 2017-05-27 | Detection alarm device for preventing transformer substation from transmitting power with safety measures |
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| CN (1) | CN107238776B (en) |
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