CN111091695B - 10kV line power failure alarm device - Google Patents

10kV line power failure alarm device Download PDF

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Publication number
CN111091695B
CN111091695B CN201911382693.4A CN201911382693A CN111091695B CN 111091695 B CN111091695 B CN 111091695B CN 201911382693 A CN201911382693 A CN 201911382693A CN 111091695 B CN111091695 B CN 111091695B
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CN
China
Prior art keywords
power failure
base
controller
control box
electrically connected
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Active
Application number
CN201911382693.4A
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Chinese (zh)
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CN111091695A (en
Inventor
林润锡
萧镜明
陈锐波
陶自强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
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Application filed by Guangdong Power Grid Co Ltd, Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN201911382693.4A priority Critical patent/CN111091695B/en
Publication of CN111091695A publication Critical patent/CN111091695A/en
Application granted granted Critical
Publication of CN111091695B publication Critical patent/CN111091695B/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02Monitoring continuously signalling or alarm systems
    • G08B29/06Monitoring of the line circuits, e.g. signalling of line faults
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/08Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines

Abstract

The embodiment of the invention discloses a 10kV line power failure alarm device, which comprises an equipment shell arranged on each line supporting telegraph pole, wherein the equipment shell comprises a base and a control box clamped and arranged on the base, an embedded groove for installing a cable is arranged on one side end surface of the base close to the control box, a controller and a voltage detection circuit electrically connected with the cable are arranged on one side end surface of the control box close to the base, an alarm circuit electrically connected with the output end of the controller is arranged in the control box, the controller controls the alarm circuit to work according to feedback information of the voltage detection circuit, a timing circuit electrically connected with the controller is arranged in the control box, the power failure alarm device comprises a controller, a power failure alarm circuit, a timing circuit, a power failure timing circuit and a staff, wherein the power failure alarm circuit is electrically connected with the controller, the timing circuit is electrically connected with the controller, and the staff can rapidly judge the initial power failure place through comparison of power failure time.

Description

10kV line power failure alarm device
Technical Field
The embodiment of the invention relates to the technical field of power failure alarm, in particular to a 10kV line power failure alarm device.
Background
Conventionally, an electric power system is divided into three major constituent systems of power generation, transmission and distribution. The power distribution system as the last link of the power system is directly oriented to the end users, and the perfection of the power distribution system is directly related to the power utilization reliability and the power utilization quality of the majority of users. The wide distribution range and large quantity of 10kV distribution lines in villages and towns are important components of a distribution network. The conventional unplanned fault power failure can only enter a relevant system through a unit desktop, the range of possible power failure is inquired, the working efficiency is low, a lot of inconvenience is brought to residents living around, for the fault power failure accident of a line, a worker needs to visit along the line to determine the power failure position, the working efficiency is low, and the workload is large.
In the prior art, when a power failure accident occurs to a distribution line, power failure information is sent to terminal equipment through a GSM communication loop, and the power failure position is warned through a buzzer, but when power failure warning is sent out at multiple places of the same line, an alarm device in the prior art cannot help workers to find out the place where the power failure occurs in time.
Disclosure of Invention
Therefore, the embodiment of the invention provides a 10kV line power failure alarm device, which performs power failure alarm work through an alarm circuit electrically connected with a controller, performs power failure timing through a timing circuit electrically connected with the controller, and enables a worker to quickly judge a first power failure place through comparison of power failure time, so that the worker is helped to judge a power failure range, the work efficiency is effectively improved, and the problem that the worker is difficult to determine a specific power failure position due to alarm accidents at multiple places of the same line in the prior art is solved.
In order to achieve the above object, an embodiment of the present invention provides the following:
a10 kV line power failure alarm device comprises an equipment shell arranged on each line supporting telegraph pole, the equipment shell comprises a base and a control box clamped and installed on the base, an embedded groove for installing a cable is arranged on the end surface of one side, close to the control box, of the base, a controller and a voltage detection circuit electrically connected with the cable are arranged on the end surface of one side of the control box close to the base, the voltage detection circuit detects the voltage signal of the cable in real time and feeds back information to the controller, an alarm circuit electrically connected with the output end of the controller is arranged in the control box, the controller controls the alarm circuit to work according to the feedback information of the voltage detection circuit, and a timing circuit electrically connected with the controller is arranged in the control box and used for power failure timing of the circuit.
The embodiment of the invention is further characterized in that a GSM communication loop and a wireless transmission loop which are electrically connected with the output end of the controller are arranged in the control box, the GSM communication loop and the wireless transmission loop are respectively connected with terminal equipment, the terminal equipment comprises a mobile phone terminal and an internet terminal, and the alarm circuit comprises a buzzer and a warning lamp which are electrically connected with the output end of the controller.
The embodiment of the invention is further characterized in that one side of the control box close to the base is provided with a conductive groove corresponding to the embedded groove, and a conductive block electrically connected with the voltage detection circuit is arranged in the conductive groove.
The embodiment of the invention is further characterized in that an arc-shaped clamping plate is arranged in the embedding groove, a buffer cavity is reserved between the arc-shaped clamping plate and the embedding groove, and a plurality of elastic pieces are arranged in the buffer cavity.
The embodiment of the invention is further characterized in that the control box comprises a base connected with the base, a dustproof net is arranged around the base, an outer shell is arranged on the base in a buckling mode, a plurality of sound expansion holes are formed in the outer shell, and a waterproof gap is reserved between the dustproof net and the outer shell.
The embodiment of the invention is further characterized in that the base is provided with a plurality of clamping grooves, the outer shell is provided with a plurality of fixed ends embedded in the clamping grooves, the clamping grooves are of an L-shaped structure, each fixed end comprises an elastic arm connected with the outer shell, the tail end of each elastic arm is provided with a clamping block embedded in the clamping groove, and one end of each clamping block, close to the base, is provided with an inclined plane end.
The embodiment of the invention is further characterized in that a water storage groove is arranged on the base between the dust screen and the outer shell and close to the clamping groove, and a slope surface which inclines downwards is arranged on the end surface of one side of the base close to the outer shell.
The embodiment of the invention is also characterized in that a heat dissipation fan is arranged in the outer shell, the heat dissipation fan is connected with an output shaft of the micro motor in a transmission way, and a fan blade of the heat dissipation fan is laid with a reflective sticker.
The embodiment of the invention is further characterized in that a solar panel is arranged on the outer side of the outer shell, a storage battery electrically connected with the solar panel is arranged in the outer shell, and the storage battery is electrically connected with the controller through a discharge circuit.
The embodiment of the invention is further characterized in that the sound expansion hole is of a funnel-shaped structure, and the outer shell is made of resin.
The embodiment of the invention has the following advantages:
(1) the device comprises a shell, a controller, a voltage detection circuit, an alarm circuit and a timing circuit, wherein the voltage detection circuit is electrically connected with the controller and is used for monitoring the voltage of a line and feeding the voltage back to the controller;
(2) the equipment shell is installed on a line in a buckling mode, installation is convenient, electric shock accidents are effectively avoided, in addition, the effective waterproof and dustproof functions are guaranteed on the equipment shell, the sound amplification effect of the alarm circuit is enhanced, and the heat dissipation effect of the circuit in the equipment shell is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a control block diagram of an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure A in FIG. 1 according to an embodiment of the present invention;
fig. 4 is an enlarged structural diagram of B in fig. 1 according to an embodiment of the present invention.
In the figure:
1-a base; 2-a control box; 3-an alarm circuit; 4-a controller; 5-a voltage detection circuit; 6-a conductive groove; 7-a timing circuit; 8-GSM communication loop; 9-wireless transmission loop;
11-embedding grooves; 12-arc splint; 13-a buffer chamber; 14-an elastic member;
21-a base; 22-dust screen; 23-an outer shell; 24-slope surface; 25-waterproof gaps; 26-a card slot; 27-a resilient arm; 28-a snap block; 29-a water storage tank;
231-a sound diffusing hole; 232-solar panel; 233-radiating fan
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1 and 2, the invention provides a 10kV line power failure alarm device, which comprises an equipment shell arranged on each line supporting telegraph pole, wherein a controller serving as a control center is arranged in the equipment shell, the controller can be a single chip microcomputer controller, the input end of the controller is electrically connected with a voltage detection circuit 5, the voltage value in the line is detected in real time through the voltage detection circuit 5 and fed back to the controller 4, when the detected voltage value is lower than a voltage threshold value set by the controller 4, a power failure accident occurs, an alarm signal is sent to an alarm circuit 3 connected with the output end of the controller 4 through the controller 4, so that peripheral residents are timely reminded of power failure signals, signals are sent to a GSM communication loop 8 and a wireless transmission loop 9 connected with the output end of the controller 4, and power failure information is sent to a mobile phone terminal and an internet terminal connected with the controller through the GSM communication loop 8 and the wireless transmission loop 9 respectively, on one hand, the power failure information is timely notified to the user, and on the other hand, the emergency repair measures are convenient for the working personnel to take in time.
In addition, the output end of the controller 4 is also connected with a timing circuit 7, when a power failure accident occurs, the controller 4 sends a signal to the timing circuit 7, and the power failure timing is started through the timing circuit 7, therefore, when the power failure accident occurs in a plurality of places of the same line, a worker judges the place where the power failure accident occurs at the beginning through the information of the timing circuit 7, the worker can conveniently judge the accident place, the worker can conveniently carry out the timely emergency repair work of the line, the power failure time is effectively reduced, and the emergency repair efficiency of the worker is improved.
The control circuit is arranged on the equipment shell arranged on the circuit, the equipment shell comprises a base 1 and a control box 2 clamped and arranged on the base 1, the control box 2 is used for installing and fixing a controller 4 and the circuit electrically connected with the controller 4, the base 1 is fixedly installed by using the national language control 2, and the circuit is clamped and fixed through the base 1 and the control box 2, so that the circuit is conveniently measured, and the alarm device is conveniently installed and fixed.
As shown in fig. 1 and 4, an end face of one side of the base 1 close to the control box 2 is provided with an embedded groove 11 for installing a cable, an arc-shaped clamping plate 12 is arranged in the embedded groove 11, the arc-shaped clamping plate 12 is made of rubber, three-phase circuits are respectively embedded in the embedded groove 11, then the control box 2 is extruded towards the base 1, the cable is limited and fixed through a conductive groove 6 which is arranged on one side of the control box 2 close to the base 1 and corresponds to the embedded groove 11, a buffer cavity 13 is reserved between the arc-shaped clamping plate 12 and the embedded groove 11, a plurality of elastic members 14 are arranged in the buffer cavity 13, the elastic members 14 are vertically arranged springs, and the arc-shaped clamping plate 12 is extruded and pushed towards the control box 2 through the elastic members 14, so that the clamping stability of the cable and the invention is improved.
In addition, be provided with in electrically conductive recess 6 with voltage detection circuit 5 electric connection's conducting block, promote the cable through elastic component 14 and remove to electrically conductive recess 6 direction, not only be applicable to the cable of different specification and dimension fixed, effectively improved the stability of being connected of detection circuitry and cable moreover.
As shown in fig. 1, the control box 2 of the present invention includes a base 21 connected to the base 1, the base 21 is connected to the base 1 by a buckle, an electric control circuit of the alarm device is disposed on the base 21, a dust screen 22 is disposed around the base 21, an outer casing 23 is installed on the base 21 by a buckle, a plurality of sound amplifying holes 231 are disposed on the outer casing 23, the sound amplifying holes 231 are funnel-shaped, one end of the sound amplifying hole 231 having a larger diameter is disposed outside the outer casing 23, so as to enhance the sound amplifying effect, the alarm circuit 3 of the present invention is a buzzer and a warning light electrically connected to the output end of the controller, the sound amplifying effect of the buzzer is effectively increased by the sound amplifying holes 231, so as to enhance the alarm effect of the alarm device of the present invention, the dust screen 22 disposed inside the outer casing 23 and wrapped around the base 21 can not only effectively prevent dust from invading and affecting the operation safety of the device and heat dissipation of the circuit chip, moreover, the dust screen 22 and the waterproof gap 25 arranged between the dust screen 22 and the outer shell 23 can prevent the water drops from entering along the sound amplifying hole 231 to cause the line short circuit accident.
In addition, the sound amplifying hole 231 arranged on the outer shell 23 of the invention can help the circuit chip arranged in the base 21 to radiate heat, and prolong the service life of the chip, the heat radiating fan 233 is arranged in the outer shell 23, the heat radiating fan 233 is connected with the output shaft of the micro motor in a transmission way, and the air flow in the control box 2 is accelerated through the heat radiating fan 233 and the heat radiating holes arranged on the outer shell 23, so that the invention not only can help the alarm device to radiate heat, and avoid the problem of chip heat radiation fault caused by cable heating, but also can help the warning lamp of the alarm circuit 3 to diffuse the irradiation range through the light reflecting paster laid on the fan blades of the heat radiating fan 233, thereby causing the attention of people.
In addition, the shell body 23 selects the resin material for use, can effectively bear the generating heat of cable, makes things convenient for the warning light to warn moreover, when the daytime, drives reflection of light sticker rotation through heat dissipation fan 233 to with the sunshine to around scintillation disperse, thereby can play the effect of driving to descending birds on the cable, carry out effectual protection to the cable.
According to the invention, the circuit board in the control box 2 is provided with the solar panel 232 through being arranged on the outer side of the outer shell 23, the storage battery electrically connected with the solar panel 232 is arranged in the outer shell 23 for supplying power, and the storage battery is electrically connected with the controller 4 through the discharging circuit, so that the control circuit in the control box 2 can normally operate and work when the power failure accident happens to the circuit.
As shown in fig. 1 and 3, the base 21 of the present invention is provided with a plurality of slots 26, the outer casing 23 is provided with a plurality of fixing ends embedded in the slots 26, the slots 26 are L-shaped, each fixing end includes an elastic arm 27 connected to the outer casing 23, the end of the elastic arm 27 is provided with a locking block 28 embedded in the slot 26, one end of the locking block 28 close to the base 21 is provided with an inclined end, and the inclined end facilitates the locking block 28 to slide downwards along the inner wall of the slot 26.
Slide the inclined plane end of buckle piece 28 downwards along draw-in groove 26 inner wall, when buckle piece 28 removed to draw-in groove 26 bottom, drive buckle piece 28 and resume to original state under the effect of elastic arm 27 to make buckle piece 28 buckle in draw-in groove 26 bottom, thereby realize shell body 23 and base 21's fixed, easy operation is convenient, the maintenance of the interior circuit of base 21 of being convenient for is changed.
An ejection cavity can be arranged on the base 21 and parallel to the clamping groove 26, and a pin is inserted into the ejection cavity to prop the clamping block 28 to one side far away from the clamping groove 26, so that the fixed end of the outer shell 23 can be conveniently taken out of the clamping groove 26.
As shown in fig. 3, a water storage groove 29 is arranged on the base 21 between the dust screen 22 and the outer shell 23 near the clamping groove 26, a slope surface 24 which inclines downwards is arranged on the end surface of one side of the base 21 near the outer shell 23, when moisture enters the outer shell 23 from the sound amplifying hole 231, the moisture slides downwards along the inner wall of the outer shell 23, part of the water drops can slide out of the control box 2 along the slope surface 24 on the base 21, and the other part of the water drops can slide into the water storage groove 29, so that the short-circuit accident of the circuit caused by the moisture is avoided, and the waterproof performance of the control box 2 is enhanced.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (8)

1. A10 kV line power failure alarm device is characterized by comprising an equipment shell, wherein the equipment shell comprises a base (1) and a control box (2) clamped and installed on the base (1), an embedded groove (11) for installing a cable is formed in one side end face, close to the control box (2), of the base (1), a controller (4) and a voltage detection circuit (5) electrically connected with the cable are arranged in the control box (2), the voltage detection circuit (5) detects voltage signals of the cable in real time and feeds information back to the controller (4), an alarm circuit (3) electrically connected with the output end of the controller (4) is installed in the control box (2), and the controller (4) controls the alarm circuit (3) to work according to the feedback information of the voltage detection circuit (5), a timing circuit (7) electrically connected with the controller (4) is arranged in the control box (2), and the timing circuit (7) is used for power failure timing of a line;
the control box (2) comprises a base (21) connected with the base (1), a dust screen (22) is arranged around the base (21), an outer shell (23) is installed on the base (21) in a buckling mode, a plurality of sound expansion holes (231) are formed in the outer shell (23), and a waterproof gap (25) is reserved between the dust screen (22) and the outer shell (23);
be provided with a plurality of draw-in grooves (26) on base (21), be provided with on shell body (23) a plurality of inlays the dress and be in stiff end in draw-in groove (26), draw-in groove (26) are L type structure, the stiff end include with elastic arm (27) that shell body (23) are connected, the end of elastic arm (27) is provided with inlays the dress and is in buckle piece (28) in draw-in groove (26), buckle piece (28) are close to the one end of base (21) is provided with the inclined plane end.
2. The 10kV line power failure alarm device according to claim 1, wherein a GSM communication loop (8) and a wireless transmission loop (9) which are electrically connected with an output end of the controller (4) are arranged in the control box (2), the GSM communication loop (8) and the wireless transmission loop (9) are respectively connected with terminal equipment, the terminal equipment comprises a mobile phone terminal and an internet terminal, and the alarm circuit (3) comprises a buzzer and a warning lamp which are electrically connected with the output end of the controller.
3. The 10kV line power failure alarm device according to claim 1, wherein a conductive groove (6) corresponding to the embedded groove (11) is formed in one side, close to the base (1), of the control box (2), and a conductive block electrically connected with the voltage detection circuit (5) is arranged in the conductive groove (6).
4. The 10kV line power failure alarm device according to claim 1, wherein an arc-shaped clamping plate (12) is arranged in the embedded groove (11), a buffer cavity (13) is reserved between the arc-shaped clamping plate (12) and the embedded groove (11), and a plurality of elastic pieces (14) are arranged in the buffer cavity (13).
5. The 10kV line power failure alarm device according to claim 1, wherein a water storage tank (29) is arranged on the base (21) between the dust screen (22) and the outer shell (23) and close to the clamping groove (26), and a slope surface (24) which inclines downwards is arranged on one side end surface of the base (21) close to the outer shell (23).
6. The 10kV line power failure alarm device according to claim 1, wherein a heat dissipation fan (233) is installed in the outer shell (23), the heat dissipation fan (233) is in transmission connection with an output shaft of a micro motor, and a reflecting sticker is laid on fan blades of the heat dissipation fan (233).
7. The 10kV line power failure alarm device according to claim 1, wherein a solar panel (232) is arranged outside the outer shell (23), a storage battery electrically connected with the solar panel (232) is arranged inside the outer shell (23), and the storage battery is electrically connected with the controller (4) through a discharge circuit.
8. The 10kV line power failure alarm device as claimed in claim 1, wherein the sound diffusing hole (231) is of a funnel-shaped structure, and the outer shell (23) is made of resin.
CN201911382693.4A 2019-12-27 2019-12-27 10kV line power failure alarm device Active CN111091695B (en)

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Application Number Priority Date Filing Date Title
CN201911382693.4A CN111091695B (en) 2019-12-27 2019-12-27 10kV line power failure alarm device

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Application Number Priority Date Filing Date Title
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CN111091695B true CN111091695B (en) 2021-07-23

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112858763B (en) * 2020-12-31 2022-07-08 贵州电网有限责任公司 10kV distribution lines overvoltage on-line monitoring device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101813740A (en) * 2010-05-13 2010-08-25 天津市翔晟远电力设备实业有限公司 System and method for detecting high voltage transmission line faults
KR101014319B1 (en) * 2008-11-26 2011-02-16 에스티엑스조선해양 주식회사 Portable checker for fire detecting system
CN102590700A (en) * 2011-12-23 2012-07-18 山东电力集团公司淄博供电公司 Method and device for quickly locating faults of overhead line on basis of time synchronization
JP2016127607A (en) * 2014-12-26 2016-07-11 西日本旅客鉄道株式会社 Dc voltage power failure confirmation device and dc voltage power failure confirmation method
CN207068217U (en) * 2017-05-22 2018-03-02 郑州铁路职业技术学院 A kind of emergent accident power failure warning device
CN208922455U (en) * 2018-11-14 2019-05-31 陈广胜 A kind of distribution line and distribution transforming power-failure alarming device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101014319B1 (en) * 2008-11-26 2011-02-16 에스티엑스조선해양 주식회사 Portable checker for fire detecting system
CN101813740A (en) * 2010-05-13 2010-08-25 天津市翔晟远电力设备实业有限公司 System and method for detecting high voltage transmission line faults
CN102590700A (en) * 2011-12-23 2012-07-18 山东电力集团公司淄博供电公司 Method and device for quickly locating faults of overhead line on basis of time synchronization
JP2016127607A (en) * 2014-12-26 2016-07-11 西日本旅客鉄道株式会社 Dc voltage power failure confirmation device and dc voltage power failure confirmation method
CN207068217U (en) * 2017-05-22 2018-03-02 郑州铁路职业技术学院 A kind of emergent accident power failure warning device
CN208922455U (en) * 2018-11-14 2019-05-31 陈广胜 A kind of distribution line and distribution transforming power-failure alarming device

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