CN102169622A - Lightning stroke report system for power transmission tower - Google Patents

Lightning stroke report system for power transmission tower Download PDF

Info

Publication number
CN102169622A
CN102169622A CN2010102709423A CN201010270942A CN102169622A CN 102169622 A CN102169622 A CN 102169622A CN 2010102709423 A CN2010102709423 A CN 2010102709423A CN 201010270942 A CN201010270942 A CN 201010270942A CN 102169622 A CN102169622 A CN 102169622A
Authority
CN
China
Prior art keywords
mentioned
electric tower
thunderbolt
send
sending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010102709423A
Other languages
Chinese (zh)
Inventor
金世烈
申相文
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.)
ANCHORMAN MACHINERY Co Ltd
Original Assignee
ANCHORMAN MACHINERY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ANCHORMAN MACHINERY Co Ltd filed Critical ANCHORMAN MACHINERY Co Ltd
Publication of CN102169622A publication Critical patent/CN102169622A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/10Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00Audible signalling systems; Audible personal calling systems
    • G08B3/10Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016Personal calling arrangements or devices, i.e. paging systems using wireless transmission

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention provides a lightning stroke report system for a power transmission tower, which notifies inspectors in a wireless manner after detection when a power transmission tower is grounded due to lightning strokes. The lightning stroke report system comprises a lightning stroke detection device which is disposed on the power transmission tower to detect accidents of lightning strokes, a transmitter which transmits abnormal states through wireless data, and a receiver which communicates with the transmitter in a wireless manner and receives identification information and flashover times of a corresponding power transmission tower. When a power transmission undergoes an accident of lightning stroke, an inspector is notified in a wireless manner, and the inspector can confirm the lightning stroke. In another embodiment, the alarm information passes through a relay receiver of a relative management area and is transmitted to a central monitoring set, and an administrator of the central monitoring set can master the situations of lightning stroke accidents of each area at any time, facilitating the action taking on the accidents of lightning strokes.

Description

Send the special-purpose thunderbolt of electric tower reporting system
Technical field
The present invention is struck by lightning the back when ground fault takes place about the iron tower of thunderbolt reporting system, particularly power transmission sequence, can the detection accident and with the special-purpose reporting system of being struck by lightning of the electric tower of sending of wireless notification floor manager.
In addition, the present invention send electric tower generation lightning strike accident situation by the central administrator who send electric tower to management, so that they send electric tower the special-purpose reporting system of being struck by lightning to what lightning strike accident took some countermeasures more easily.
Background technology
Power transmission sequence is that the electric power of generating plant production is sent to each regional electric power facility by transformer station, has arrived modern society and has sent electric facility accident directly to involve problems such as being unable to supply electric power for a long time, therefore may cause important social issue.
In addition, being installed in local power transmission sequence need be by the support of sending electric tower of installing according to certain distance, and power transmission sequence need be installed in large-scale area, therefore has to face danger such as wind, snow, rain, thunderbolt.In addition, power transmission sequence damages and causes ground fault to account for major part after sending electric tower to be struck by lightning in the accident of power transmission sequence, so because this class is struck by lightning when causing ground fault (being designated hereinafter simply as lightning strike accident), need take measures rapidly, in order to prevent that accident from taking place, and need employ prevention by means such as inspections.
In addition, because when above-mentioned lightning strike accident causes sending wire short-circuiting, send the electric current that has overload tens of times and even hundreds of times on the electric wire, such electric current can worsen and is installed in the tension stress of sending the electrical equipment such as stepup transformer on the electric tower, finally can cause the misoperation of this electrical equipment.
Therefore, when sending electric tower generation lightning strike accident, need a kind of adequate measures such as the fault area being taked to stop electric power supply that detect rapidly after the accident, so this just needs the floor manager to utilize naked eyes or thunderbolt display device to confirm that the maintenance that whether takes place behind the lightning strike accident power transmission sequence to be implemented to continue detects operation.
The thunderbolt display device of utilizing the conventional banner mode is disclosed in the open practical new case communique of Korea S 99-34128 number, illustrate as Fig. 1, this thunderbolt display device is by main frame (16), when thunderbolt back produces high electric current, along with the driven solenoid of startup (70) of (40) of selector switch, along with above-mentioned solenoidal drive by open chassis (13), along with the opening of above-mentioned chassis (13) move to the below display panel (12), open the demonstration cloth (15) that is entangled on the above-mentioned display panel (12) and constitute along with above-mentioned display panel (12) moves to the below.At this moment, the sensing device of the regulation that is made of coil by detection of electromagnetic fields detects the high electric current that above-mentioned thunderbolt causes, and this electric current can start selector switch (40) after by rectification.
Promptly, in the stilt of power transmission sequence-the send thunderbolt display device that the use flag mode that is made of said structure is installed on the electric tower, above-mentionedly send electric tower in a single day to be struck by lightning the back when producing high electric current, along with the bar (11) of the driven solenoid of startup (70) of selector switch (40) will be opened chassis (13), at this moment display panel (12) is opened the demonstration cloth (15) that is wrapped on the display panel (12) after moving to the below, and this send electric tower that lightning strike accident has taken place to external prompt.
But there is certain defective in the thunderbolt display device of the use conventional banner mode that constitutes with said structure, need confirm to send the lightning strike accident etc. of electric tower with eyes such as the floor manager.When night or bad weather generation lightning strike accident, discovery accident place needs long time, can not in time take measures to lightning strike accident.Be exactly to show cloth in addition because factors such as rain, wind are wrapped in and send on the electric tower or be difficult to confirm when damaging.
The open communique of Jap.P. discloses another kind of detection method No. 60214273 in addition, that just is to use the optical signal generator of the coil, delay circuit and the light emitting diode that possess the perception thunder-strike current, when lightning strike accident takes place when, by having the delay circuit of different time delay, send optical pulse train (Optical Pulse Train) to monitoring station (Monitor Site), distinguish the electric tower thunderbolt pick-up unit that send of demonstration accident place lightning strike accident after the pattern of the optical pulse train that transmits then.It is poor time of arrival also to have introduced the electric current and the thunder that utilize the thunderbolt that sends by fiber optics to cause in No. the 60214273rd, Japan's publication communique, detects the method at the accident place of generation lightning strike accident.
But, in the above-mentioned Japanese publication, need use fiber optics owing to send when being struck by lightning detection signal, so each send electric tower all to use fiber optics to connect conveyer line, if will to consider to send electrical distance long, when sending the fitting limit of electric facility wide, will there be problems such as the high and installation difficulty of maintenance cost.
Summary of the invention
[problem that needs solution]
The present invention be consider after the above-mentioned situation create, first purpose of invention is to provide when sending electric tower generation lightning strike accident, a kind of identifying information that send electric tower and lightning strike accident frequency that has an accident to the floor manager by radio is provided, be convenient to the electric tower that send at floor manager's affirmation accident place, grasp and send the special-purpose thunderbolt of the electric tower of sending of electric tower current state reporting system.
Second purpose of the present invention is to provide when lightning strike accident takes place, send the central administrator of electric tower to send to take place the identifying information that send electric tower of the fact and lightning strike accident to management, be convenient to him and send the special-purpose thunderbolt of electric tower reporting system what send that electric tower lightning strike accident takes measures.
[problem solution]
To achieve these goals, being mounted in great majority according to sending of the 1st viewpoint of the present invention special-purpose thunderbolt of electric tower reporting system send on the electric tower, when sending electric tower generation lightning strike accident, the thunderbolt reporting system that is notified to the floor manager behind the electric tower of sending of lightning strike accident specify to take place, the design feature of this system is to possess to be installed in to send the thunderbolt pick-up unit that detects lightning strike accident on the electric tower, when detecting lightning strike accident by above-mentioned thunderbolt pick-up unit, send the transmitter of accident alarming information by wireless data, the floor manager carries passes through the receiver that wireless and above-mentioned transmitter communicated and received the above-mentioned warning message that each transmitter sends, above-mentioned thunderbolt pick-up unit possesses by sending the high electric current on the electric tower to generate faradic surge coil and be installed in the surge coil two ends, blocking-up from the surge coil input by the electromagnetic electromagnetic wave shielding device that send electric wire to produce.
The another one design feature is to possess to the above-mentioned a plurality of address dates of electric tower distribution as the regulation of independent identifying information that send, above-mentioned transmitter sends corresponding identifying information-address date and the flashover number of times information thereof of sending electric tower as warning message, and above-mentioned receiver shows the electric tower that send that lightning strike accident takes place after receiving this information.
The design feature of above-mentioned transmitter is when possessing the whole device of control in addition, when detecting thunderbolt by above-mentioned thunderbolt pick-up unit, when generating and exporting the processor of above-mentioned warning message, working procedure that non-volatility is preserved above-mentioned processor, the modulating device of the warning message that program storage device that all that distribute in the compass of competency send the address date of electric tower, modulation generate by above-mentioned processor, the wireless output unit by aerial ripple transmitting network output wireless data have been preserved.
The design feature of above-mentioned receiver is to possess the multiplying arrangement that signal that above-mentioned transmitter is sent amplifies in addition, demodulation is by the demodulating equipment of above-mentioned multiplying arrangement amplifying signal, protocol-decoding is by the decoding device of the demodulating data of above-mentioned demodulation method acquisition according to the rules, the key input apparatus that possesses a plurality of function keys of floor manager's controlling receiver action, the display device that shows above-mentioned warning message with literal or numeral, when controlling whole receiver action according to the key assignments that utilizes the input of above-mentioned key input apparatus, show from the microprocessor of the warning message of above-mentioned transmitter reception in above-mentioned display device, when preserving the working procedure of above-mentioned microprocessor, preserved all that distribute in the compass of competency and sent the program storage device of the address date of electric tower.
In addition, the characteristics of above-mentioned processor are to detect the operation power source voltage to have when unusual, generate also output and represent this unusual regulation warning message.
In addition, above-mentioned features of microprocessor is when above-mentioned transmitter receives the warning message of expression abnormal voltage, controls above-mentioned display device and shows and comprise the warning message that send electric tower identifying information that the misoperation power supply takes place.
In addition, the design feature of above-mentioned transmitter is additionally to have increased may command to supply the switchgear that above-mentioned modulating device moves power supply.When above-mentioned processor does not send warning message, close above-mentioned switchgear, open switchgear when sending warning message.
To achieve these goals, being mounted in great majority according to sending of the 2nd viewpoint of the present invention special-purpose thunderbolt of electric tower reporting system send on the electric tower, when sending electric tower generation lightning strike accident, the thunderbolt reporting system that is notified to the floor manager behind the electric tower of sending of lightning strike accident specify to take place, the design feature of this system is to possess to be installed in to send the thunderbolt pick-up unit that detects lightning strike accident on the electric tower, when detecting lightning strike accident by above-mentioned thunderbolt pick-up unit, send a plurality of transmitters of the 1st warning message by wireless data, in certain distance, generate also the 2nd warning message of distribution provisions cognizance code behind above-mentioned the 1st warning message of long-range reception, send to the relaying receiver (at least one) of extranets then, and receive from above-mentioned relaying receiver by extranets and to show that each send the central monitoring group of electric tower lightning strike accident generation state behind the 2nd warning message.Above-mentioned the 1st warning message comprises corresponding the 1st address date that send the regulation of electric tower of identification, above-mentioned cognizance code is the 2nd address date of each relaying receiver of identification, above-mentioned thunderbolt pick-up unit possesses by sending the high electric current on the electric tower to generate faradic surge coil and be installed in the surge coil two ends, blocking-up from the surge coil input by the electromagnetic electromagnetic wave shielding device that send electric wire to produce.
In addition, the design feature of above-mentioned transmitter is to calculate behind the corresponding lightning strike accident frequency that send electric tower to send after flashover number of times information is included in above-mentioned warning message.
[invention effect]
According to having the invention of said structure, when sending electric tower generation lightning strike accident, wirelessly send the lightning strike accident of electric tower by utilizing, so that can confirm to send the lightning strike accident of electric tower generation a long way off the floor manager to the floor manager.In addition, can also confirm to send to the floor manager behind the operation power supply status of transmitter, detect and change operation so that the floor manager carries out device more flexibly.
In addition, according to the present invention, when lightning strike accident takes place when, its warning message can send to the central monitoring group behind the relaying receiver through the administration corresponding area, so the keeper of central monitoring group can grasp the lightning strike accident situation of sending electric tower in each area, lightning strike accident is easier takes measures to taking place.
Description of drawings
Fig. 1 is the figure that shows the inner structure of tradition thunderbolt annunciator.
Fig. 2 is to be the figure that the special-purpose thunderbolt of electric tower reporting system notion is sent in example explanation with the 1st case study on implementation of the present invention.
Fig. 3 is the block diagram of the structure of displayed map 2 illustrated transmitters (100).
Fig. 4 is the circuit diagram of the circuit structure of displayed map 3 illustrated thunderbolt test sections (110).
Fig. 5 is the process flow diagram of the action of key diagram 3 illustrated transmitters (100).
Fig. 6 is the block diagram of the structure of displayed map 2 illustrated receivers (200).
Fig. 7 is to be the figure that the notion of the special-purpose thunderbolt of electric tower reporting system is sent in example explanation with other case study on implementation of the present invention.
Fig. 8 represents the inner structure of relaying receiver (400).
Fig. 9 shows the inner structure of central monitoring group (500).
[symbol description] 100: transmitter, 200: receiver, L: surge coil, D: crystal diode, S1: thyristor
Embodiment
Below by case study on implementation of the present invention being described with reference to figure.But the case study on implementation that the following describes only is one of good case study on implementation of the present invention, and such case study on implementation is not represented and limited interest field of the present invention.The present invention can carry out various distortion back and implement in the scope that does not break away from technological thought.
Key concept of the present invention at first is described.
After can considering to confirm to send the lightning strike accident of electric tower generation, notify the whole bag of tricks of floor manager or other management devices.Wherein first method is exactly at sensor display of visually signal, allows the floor manager wait and discerns.But this method in conventional art, illustrate, need the floor manager to confirm with eyes, when lightning strike accident took place in night or the bad weather, the affirmation accident needed for a long time, can't in time handle lightning strike accident.
In addition, second method is that sensor passes through optical cable or other circuit to the management devices notice lightning strike accident takes place.But there are the very difficult problems that adapt to reality such as expense height, management devices difficulty in this method owing to need additionally circuit be installed between sensor.
It is wireless to management devices notice lightning strike accident to consider that at last sensor passes through.This method does not need extra wiring operation, also can a plurality of sensor of integrated management, so be the higher method of efficient.
In addition, through discovering that sending the best approach of electric tower thunderbolt reporting system is exactly wireless mode.
But installed on the electric tower of sending of sensor a large amount of hi-lines has been arranged.These hi-lines can produce not only powerful but also a large amount of electromagnetic waves.Usually wireless transmitter is made of various electronics and electrical equipment, and these equipment are to link together by electric wire.These electronics and electrical equipment are all very responsive to electromagnetic wave.Electromagnetic wave can flow into the error running of initiating device in the device by electric wire.Especially wireless transmitter is equipped with antenna in order to receive and dispatch the RF signal.Electromagnetic wave flow into device inside easily by antenna.Therefore, for above-mentioned reasons, sending electric tower that wireless transmitter is installed is very unpractical scheme.
The present inventor keeping the certain distance position with sending electric tower, utilizes receiver and wireless base station apparatus to carry out repeatedly communication experiment after sending electric tower that wireless base station apparatus is installed.Found that receiving trap can't normally receive the signal that wireless base station apparatus sends.That is, the data sent of dispensing device are not reduced in receiving trap normally.This has been carried out various analyses, maximum reason is exactly that the electromagnetic wave that send the hi-line of electric tower to send flows into dispensing device inside, when wireless base station apparatus sent data, these electromagnetic waves will send together by antenna, and therefore receiving trap can't discern those original data.
Flowing into electromagnetic approach to dispensing device has multiple.Inflow by antenna is arranged, have electric wiring to flow into, the inflow of the sensor that is struck by lightning by detection etc. is arranged by being arranged on the substrate.
Find after the electromagnetic wave degree of confirming to utilize these approach to flow into, flow into a large amount of electromagnetic waves by sensor, the electromagnetic wave of these inflows can finally can pass through antenna transmission by inner wiring transmission.The sensor that detects thunderbolt is that inflow send the electric current of electric tower to generate faradic coil pickoff when taking place by thunderbolt, a little less than this coil pickoff all is highly brittle to the electromagnetic influence in outside.
Therefore, according to above-mentioned experimental result, the output terminal of coil pickoff is in order to block external electromagnetic waves, the electromagnetic wave blocking wave filter has been installed, block the electromagnetic wave that flows into by coil pickoff then and flow into internal circuit, found that the data that the more stable reception of receiver send the transmitter of electric tower installation to send.
Fig. 2 is to be the figure that the special-purpose thunderbolt of electric tower reporting system notion is sent in example explanation according to above-mentioned experimental result with case study on implementation of the present invention.The special-purpose thunderbolt of the electric tower reporting system of sending among Fig. 2 is by supporting receiver (200) formation that transmitter (100) that sending of power transmission sequence install on the electric tower and floor manager carry.
Above-mentioned transmitter (100) flow into the high electric current that send electric tower after detecting and sending electric tower to be struck by lightning, and will pass through the wireless transmission warning message if detect lightning strike accident.Transmitter (100) can be received device (200) reception by the warning message of wireless transmission.
Above-mentioned warning message can show the flashover number of times information of the corresponding identifying information that send electric tower of identification and the number of times that is struck by lightning, and above-mentioned identifying information send the specified address data of electric tower to constitute by distributing to each that transmitter (100) is installed.
The communication distance of above-mentioned transmitter (100) and receiver (200) is an example with transmitter (100), is set in 5km to the 10KM radius.Certainly, these receiving ranges can enlarge according to RF (Radio Frequency) circuit performance that above-mentioned transmitter (100) and receiver (200) possess.
Though above-mentioned for convenience of explanation transmitter (100) and receiver (200) illustrate separately among Fig. 2, but above-mentioned transmitter (100) quantity must conform to the quantity of sending electric tower, and receiver (200) quantity should conform to the floor manager's who detects the power transmission sequence abnormality number.
Below by Fig. 3 to Fig. 6 above-mentioned transmitter (100) and receiver (200) are described in more details.
Fig. 3 is the block diagram of the structure of displayed map 2 illustrated transmitters (100).Cross reference number 110 among Fig. 3 is that the high-current flow when being struck by lightning is gone into when sending electric tower, detects the thunderbolt test section that whether is struck by lightning on this basis.This thunderbolt test section (110) connects the information of voltage input end (VS1) of processor described later (170).
Fig. 4 is the structural drawing that shows the concrete structure of above-mentioned thunderbolt test section (110).Reference marks L is a surge coil among Fig. 4.When installing, this surge coil (L) keeps certain distance with sending electric tower.High-current flow when sending electric tower to be struck by lightning is gone into when sending electric tower, and surge coil (L) inputs to internal circuit after generating induction current.
The crystal diode (BD) of the high-tension influence of the both sides terminal parallel connection of above-mentioned surge coil (L) when preventing that internal circuit is struck by lightning.The both sides of surge coil (L) are connected with the input end of rectification part (113) by electromagnetic wave shielding device (111,112) separately in addition.Above-mentioned electromagnetic wave shielding device (111,112) is the external electromagnetic waves that flows into by surge coil (L), that is, blocking-up avoids these electromagnetic waves to flow into internal circuit by the electromagnetic wave that send electric wire to send that send electric tower to support.
Above-mentioned rectification part (113) is made of bridge rectification circuit and smoothing capacitor etc.This rectification part (113) is when importing induction current by surge coil (L), this electric current to be carried out the laggard line output of rectification.
The input end of above-mentioned rectification part (113) is to be connected with the gate end of thyristor (S1) with Zener diode (Z1) by resistance (R1).The sun level of thyristor (S1) is connected plus earth with the information of voltage input end (VS1) of processor (170).Be to be connected with cell voltage (V1) between the anode of thyristor (S1) and the information of voltage input end (VS1) in addition by pull-up resistor (R2).Therefore, thyristor (S1) is when being set at closed condition, cell voltage (V1) is input to the information of voltage input end (VS1) of processor (170) by pull-up resistor (R2), so information of voltage input end (VS1) is transfused to high level detection signal, make surge coil (L) produce induction current behind high electric current when inflow send electric tower to be struck by lightning, when therefore rectification part (113) output surpasses certain grade of other electric current, thyristor (S1) will be set at open mode, just can import low-level detection signal to information of voltage input end (VS1).
In addition, when the cross reference number 120 among Fig. 3 is the working procedure of non-volatility preservation processor (170), preserves corresponding each and send the program storage of the address date of electric tower identification signal.
In addition, cross reference number 130 is FSK modulation portion that the transmission data of exporting by the tandem data output terminal (TXD) of processor (170) are carried out FSK modulation (Frequency Shift Keying Modulation).Cross reference number 140 is the amplifiers that enlarge the modulation signal of FSK modulation portion (130) output.Cross reference number 150 is that the modulation signal that amplifier (140) amplifies is outputed to the transmitting antenna that aerial ripple transmits net.
In addition, reference marks BAT is the battery of the required operation power supply of each circuit part of input operation, the 160th, and according to the control of processor (170), the switch portion of the operation power supply of control FSK modulation portion (130) and amplifier (140).
That is the usual minimum state that keeps operation power supply operation processor (170) of above-mentioned transmitter (100).During from above-mentioned thunderbolt test section (110) input thunderbolt detection signal, provide FSK modulation portion (130) and amplifier (140) operation power supply.
In addition, in the time of the whole device of processor (170) control, during from above-mentioned thunderbolt test section (110) input as low-level thunderbolt detection signal, to corresponding the send identifying information-address date of electric tower and the flashover number of times information of accumulative total of its tandem data output terminal (TXD) output, send to above-mentioned receiver (200) then as warning message.
In addition, supply voltage (V1), be that battery (BAT) voltage is connected with the VRH end of processor (170) by resistance (R10), when the access node between above-mentioned resistance (R10) and the VRH end carries out ground connection by capacitor (C1), access node between its capacitor (C1) and the ground connection is connected with the VRL end of processor (170), so processor (170) utilizes the potential difference (PD) between above-mentioned VRH end and the VRL end to detect the abnormality of cell voltage, when the voltage between the two ends is lower than the stipulated standard value, will generate the information data of expression phenomenon, and export by tandem data output terminal (TXD).
The warning message that send electric tower that above-mentioned processor (170) generates is made of the information data of address date and regulation, above-mentioned address date is the identifying information that send electric tower that transmitter (100) have been installed, and this address date and above-mentioned explanation are kept in the program storage (120) like that.
In addition, above-mentioned information data is an alarm content, comprises as the alarm content of thunderbolts such as flashover number of times information and the alarm content of expression cell voltage abnormality.Also having above-mentioned warning message is to transmit frame data by the agreement of stipulating.In addition, above-mentioned processor (170) inside possesses counter (171), calculates and preserves flashover number of times information after thunderbolt detects number of times.
Follow action below with reference to the illustrated transmitter of flowchart text Fig. 3 (100) of Fig. 5.
The user installs battery (BAT) or opens when not having illustrated independent power switch input operation power supply at this dispensing device (100), and processor (170) is saved in internal storage initialization process such as (not diagrams) after carrying out as read from program storage (120) working procedure of regulation.(ST501)
After this, processor (170) control off switch portion (160) cuts off the battery supply to FSK modulation portion (130) and amplifier (140).That is, processor (170) is under normal running status, and setting big FSK modulation portion (130) and the amplifier (140) of power consumption is non-driven state, prevents consuming cells (BAT).(ST5020)
After this, after finishing, above-mentioned initialization process and switch motion send when in the electric tower lightning strike accident taking place, send and flow into high electric current in the electric tower, thunderbolt test section (110) is to processor (170) input is low-level when luring voltage in the transmitter (100) then, and processor (170) perception of just taking this as a foundation send whether lightning strike accident takes place in the electric tower.(ST503,ST504)
After this, processor (170) reads the corresponding address date that send electric tower from program storage (120) after, flashover number of times information with the address date that reads and internal counter (171) counting is foundation, generate the warning message of regulation, after opening switch portion (160), when being set at driving condition, the warning message of generation outputs to FSK modulation portion (130) by tandem data output terminal (TXD) FSK modulation portion (130) and amplifier (140).
Therefore, above-mentioned warning message sends to receiver (200) end through FSK modulation back by amplifier (140) and antenna (150) in FSK modulation portion (130).
In addition, processor (170) is not in the normal operating state that thunderbolt takes place even be not, by VRH end and VRL end, detect cell voltage when being lower than certain value, the same with above-mentioned action, driving switch portion (160) at first, then FSK modulation portion (130) and amplifier (140) are set at driving condition, and send to receiver (200) after generating the warning message of the provisioning information comprise address date that send electric tower that demonstration reads and cell voltage abnormality from program storage (120).(ST505)
In addition, processor (170) repeats above-mentioned warning message and sends action in the time of predesignating, and surpasses setting-up time and just can interrupt sending.Such as, stop 3 seconds action after sending 7 seconds repeatedly in 3 days, when stopping to send action during through 3 days, reset the flashover number of times information of processor (170) inside counting device (171) accumulative total.(ST506,ST507)
In addition, Fig. 6 is the block diagram that shows above-mentioned receiver (200) structure.
Promptly, cross reference number 201 among Fig. 6 is antennas of the frequency signal of receiver transmitter (100) transmission, the 202nd, the automatic gain voltage (AGC:Auto Gain Control) with from FSK demodulation section (204) input that the back will illustrate is foundation, the RF amplifier that the frequency signal that receives by above-mentioned antenna (201) is amplified, the 603rd, by the frequency signal of the regulation in the frequency signal of RF amplifier (202) reception, that is, in order to filter the surface acoustic wave filter filter of the frequency signal that transmitter (100) sends.
In addition, cross reference number 204 is FSK demodulation sections of the original data of reduction behind the modulation signal of transmitter (100) of demodulation FSK modulation, the 205th, agreement is in accordance with regulations decoded to the demodulating data of above-mentioned FSK demodulation section (24), and the back is about to the demoder that is input to microprocessor (213) of explanation.
In addition, cross reference number 206 is the display parts that show from the warning message of transmitter (100) reception, 207 and 208 is to notify alarm and the warning lamp that lightning strike accident has taken place to the floor manager, the 209th, and the above-mentioned alarm (207) that drives according to the control of microprocessor (213) and the drive division of warning lamp (208).
In addition, cross reference number 210 is when preserving microprocessor (213) working procedure, corresponding transmitter (100), preserved and distributed to that all send the program storage of the address date of electric tower in receiver (200) compass of competency, the 211st, preserve the data-carrier store of the various data such as warning message that receive from transmitter (100).
In addition, cross reference number 212 is key input parts of the various operation push-buttons (not have diagram) that possess floor manager's controlling receiver (200) action, and this key input part (212) possesses selects the various function keys and the floor manager that drive alarm (207) or warning lamp (208) etc. to search for the search key of the information such as abnormal alarm in the data-carrier store (211) that are stored in.
When cross reference number 213 is imported the whole service of controlling receiver by the key of above-mentioned key input part (212) in addition,, carry out the microprocessor that also control is reported to the police according to the warning message that receives from above-mentioned transmitter (100).
The following describes the action of the receiver that constitutes by said structure.
Promptly, by antenna (201) when transmitter (100) receives warning message such as thunderbolt grade, when corresponding received signal is carried out demodulation by RF amplifier (202) and Surface Acoustic Wave Filter (203) and FSK demodulation section (204), be input to microprocessor (213) after decoding by demoder.
In addition, when microprocessor receives by the warning message of decoder decode, at first in program storage (210), search for the address date of corresponding warning message, and the unusual electric tower that send takes place in search.Understand after the above-mentioned information data literal or numeral in addition in display part (206) control display alarm content.Microprocessor this moment (213) drives alarm (207) and warning lamp (208) by drive division (209), notifies the floor manager that lightning strike accident has taken place.
Therefore, the floor manager is according to the alarm content that shows in the above-mentioned display part (206), confirm current which send electric tower ground fault to take place because of thunderbolt.In addition, when same display alarm when unusual takes place for the battery of transmitter (100), the floor manager can be easy to the transmitter (100) of judging that battery consumption is intact, and takes corresponding measure.
That is, distribute to floor manager's the interior all fixed address data of sending electric tower correspondence of compass of competency in the above-mentioned case study on implementation, when sending electric tower to wait generation unusual, send warning message, make the floor manager discern the electric tower that send of generation thunderbolt easily to receiver because of suffering thunderbolt.
In the above-mentioned in addition case study on implementation, transmitter (100) and receiver (200) are by wireless connections, and the floor manager carries above-mentioned receiver (200), can confirm the with the naked eye light state of confirming that send electric tower long-range.
In addition, in the above-mentioned case study on implementation, check the voltage condition of the battery (BAT) of each transmitter (100) outfit, when the operation power supply is not enough, just can point out on the receiver, report to the police so the operation power supply of transmission transmitter (100) that can be stable is not enough.
In addition, Fig. 7 is to be the figure that the notion of the special-purpose thunderbolt of electric tower reporting system structure is sent in example explanation with other case study on implementation of the present invention.Cross reference number 300 (300 among Fig. 7 1~ 300 n) be to send electric tower group, above-mentionedly send electric tower group (300) to send electric tower to constitute by a plurality of of above-mentioned transmitter have been installed, belong to above-mentioned and send in the electric tower group (300) each to send electric tower to carry out radio communication between transmitter (100) and the relaying receiver described later, therefore be installed in the distance range of regulation in order to allow.
In addition, cross reference number 400 (400 1~ 400 n) be when causing ground fault because of thunderbolt, long-rangely in certain distance accept each and send behind warning message that the transmitter (100) installed on the electric tower sends circular to the relaying receiver of central monitoring group described later.Exist in the scope of the radius 5km to 10km of above-mentioned relaying receiver (400) communicate with it send electric tower group (300), the 500th, receive the central monitoring group of the warning message that each relaying receiver (400) sends, central monitoring group and above-mentioned relaying receiver (400) are that Kongzhong or the private by PSTN (Public Switched Telephone Network) etc. is connected.At this moment, above-mentioned relaying receiver (400) preferably is connected by network with central monitoring group (500).
Therefore, when sending electric tower to cause ground fault because of thunderbolt, the warning message that the transmitter (100) that send electric tower to install sends will send on the interior relaying receiver (400) of its range of management, the relaying receiver (400) that receives warning message sends to information central monitoring group (500) once more, makes the keeper of central monitoring group (500) grasp the situation of the electric tower generation of sending of each area lightning strike accident.
Below by Fig. 8 and Fig. 9 above-mentioned relaying receiver (400) and central monitoring group (500) are described in more details.
Fig. 8 represents the inner structure of above-mentioned relaying receiver (400), thus for the part identical with the structure of the receiver (200) of Fig. 6 only example go out identical cross reference number, no longer elaborate.
Promptly, cross reference number 401 among Fig. 8 is corresponding transmitter (100), preserve all that distribute in the compass of competency and sent the 1st address date of electric tower, and preserve when distributing to the 2nd address date of corresponding relaying receiver (400) accordingly, possess to the program storage of central monitoring group (500) transmission from the working procedure of the warning message of transmitter reception.
That is, above-mentioned the 2nd address date is in order to discern each relaying receiver (400), distributes identifying information to central monitoring group (500), sends in the warning message of above-mentioned central monitoring group (500) to comprise the 1st address date and the 2nd address date.
In addition, cross reference number 402 is the key input parts that possess the various operating keys (not have to illustrate) that the corresponding regional keeper who send electric tower group (300) of management controls the action of relaying receiver (400), this key input part (402) possesses the various function keys that can select to drive alarm (207) or warning lamp (208) etc., and regional keeper search is stored in the search key of the abnormal alarm information of data-carrier store etc. and the various function keys of carrying out data communication with central monitoring group (500).
In addition, cross reference number 403 is to carry out the network connecting portion that transceive data is communicated by letter with above-mentioned central monitoring group (500), the 404th, be connected in above-mentioned network connecting portion (403), the interface of the various communication protocols that support needs when carrying out data communication with above-mentioned central monitoring group (500).
In addition, cross reference number 405 is when controlling whole relaying receiver (400) operation according to above-mentioned key input part (402) input key assignments, sends to the microprocessor of central monitoring group behind the warning message that control and treatment receives from transmitter (100).
The following describes the operation of the relaying receiver (400) that constitutes by said structure.
Promptly, by antenna (201) when transmitter (100) receives warning message such as thunderbolt grade, when corresponding received signal is carried out demodulation by RF amplifier (202) and Surface Acoustic Wave Filter (203) and FSK demodulation section (204), be input to microprocessor (405) after decoding by demoder.
Microprocessor (405) is searched for the 1st address date of warning message in program storage (401) after, search the unusual electric tower that send takes place, notify to regional keeper by drive division (209) driving alarm (207) and warning lamp (208) then lightning strike accident has taken place.
After this, microprocessor (405) reads the identifying information of corresponding relay receiver (400) from program storage (401)--behind the 2nd address date, add in the warning message of reception, then by network in succession portion (403) send to central monitoring group (405), notify the electric tower of sending of which area that lightning strike accident has taken place with this.
In addition, Fig. 9 shows the inner structure of above-mentioned central monitoring group (500), cross reference number 501 among Fig. 9 is the display parts that show from the warning message of above-mentioned relaying receiver (400) reception, the 502nd, and the keeper has possessed the key input part of the various function keys (not having diagram) of control central monitoring group (500) operation.
In addition, cross reference number 503 is data-carrier stores of preserving from the various data such as warning message of relaying receiver (400) transmission, the 504th, when preserving the working procedure of control part described later (505), corresponding transmitter (100), preserved and distributed to that all send the 1st address date of electric tower in each relaying receiver (400) compass of competency, preserved the program storage part of distributing to each relaying receiver (400) at corresponding relay receiver (400).
In addition, when cross reference number 505 is the whole device of control, when above-mentioned relaying receiver (400) sends warning message, according to its warning message control and handle the control part of reporting to the police.
Therefore, when sending electric tower generation lightning strike accident, the warning message that corresponding transmitter (100) sends can through with the relaying receiver (400) that send electric tower group (300) to keep communicating by letter after send to central monitoring group (500), control part (505) in the central monitoring group (500) is understood the warning message content that receives by network connecting portion (403), control when being shown to display part (501), notify to the keeper by drive division (209) driving alarm (207) and warning lamp (208) lightning strike accident has taken place.
Therefore the keeper can be by the displaying contents of the display part (501) in the central monitoring group (500), confirm current which area which send electric tower that lightning strike accident has taken place.
In addition, when the battery of transmitter (100) takes place to report to the police too when unusual, the keeper of relaying receiver (400) and central monitoring group (500) can be easy to the transmitter (100) of judging that battery consumption is intact, and takes corresponding measure.
Therefore, in the above-mentioned case study on implementation in the compass of competency of each relaying receiver (400) all send electric tower to distribute the 1st address date, distribute the 2nd address date in order to discern different relaying receivers (400), when lightning strike accident takes place when, the warning message that comprises above-mentioned the 1st address date and the 2nd address date can send to central monitoring group (500) through relaying receiver (400), so the keeper of relaying receiver (400) and central monitoring group (500) is easy to discern the electric tower that send that thunderbolt takes place, and takes appropriate measures then.
In addition, the present invention is not limited to above-mentioned case study on implementation, can carry out various distortion back and implement in the scope that does not break away from technological thought.
For example, in above-mentioned case study on implementation, relaying receiver (400) is installed in regional keeper's range of management, and warning devices such as alarm, display part are installed.But also warning devices such as alarm, warning lamp can be installed, adopt unmanned relaying receiver.
In addition, in above-mentioned case study on implementation, transmitter (100) is installed in and send on the electric tower, notifies when lightning strike accident takes place.But above-mentioned transmitter (100) also can be installed on the distribution tower except sending electric tower.
In addition, in above-mentioned case study on implementation, when sending electric tower that lightning strike accident takes place simultaneously to send out, a plurality of transmitters (100) send warning message with identical frequency in the identical time period a plurality of, so receiver (200) possibly can't correctly reduce corresponding warning message.
Therefore, after considering above-mentioned situation, preferably the identification number to send electric tower that transmitter is sent is to set time delay of the warning message of foundation different value, the identification number last figure of for example sending electric tower is during for " 0 " or " 5 ", send immediately, when " 1 " or " 6 ", after 6 seconds, send or the like.In addition, also can set the time delay that transmitter sends warning message at random.

Claims (10)

1. one kind is sent the special-purpose thunderbolt of electric tower reporting system, send on the electric tower according to being installed in great majority, when sending electric tower generation lightning strike accident, the thunderbolt reporting system of notifying the floor manager behind the electric tower of sending of lightning strike accident specify to take place, this design feature of sending the special-purpose thunderbolt of electric tower reporting system is to possess to be installed in to send the thunderbolt pick-up unit that detects lightning strike accident on the electric tower, when detecting lightning strike accident by above-mentioned thunderbolt pick-up unit, send the transmitter of accident alarming information by wireless data, the floor manager carries passes through the receiver that wireless and above-mentioned transmitter communicated and received the above-mentioned warning message that each transmitter sends, above-mentioned thunderbolt pick-up unit possesses by sending the high electric current on the electric tower to generate faradic surge coil and be installed in the surge coil two ends, blocking-up from surge coil input by the electromagnetic electromagnetic wave shielding device that send electric wire to produce, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
2. the special-purpose thunderbolt of the electric tower reporting system of sending according to claim 1 possesses to the address date of the electric tower distribution of sending of above-mentioned majority as the regulation of identifying information, then above-mentioned transmitter is sent identifying information one address date that send electric tower accordingly and its flashover number of times information as warning message, above-mentioned receiver shows the electric tower that send that lightning strike accident takes place after receiving this information, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
3. when the transmitter that send the special-purpose thunderbolt of electric tower reporting system according to claim 1 and 2 possesses the whole above-mentioned transmitter of control, generate the processor of exporting behind the above-mentioned warning message when detecting thunderbolt by above-mentioned thunderbolt pick-up unit, non-volatility has been preserved all that distribute in the compass of competency and has been sent the program storage device of the address date of electric tower, modulation reaches the wireless output unit of above-mentioned modulation signal being exported with wireless data by aerial ripple transmission net by the modulating device of the warning message that above-mentioned processor generates, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
4. the receiver of the special-purpose thunderbolt of electric tower reporting system that send according to claim 1 and 2 possesses the multiplying arrangement of amplification from the signal of above-mentioned transmitter reception, the demodulating equipment of the above-mentioned multiplying arrangement amplifying signal of demodulation, the decoding device that agreement is according to the rules decoded to the demodulating data that receives from above-mentioned demodulating equipment, key input apparatus with a plurality of function keys of floor manager's controlling receiver, the display device that shows above-mentioned warning message with literal and numeral, key assignments according to above-mentioned key input apparatus input, when controlling the action of whole receiver, in above-mentioned display device, show from the microprocessor of the warning message of above-mentioned transmitter reception, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
5. the above-mentioned processor of the special-purpose thunderbolt of electric tower reporting system that send according to claim 3 detects when moving abnormity of power supply, generates and represents the laggard line output of this unusual warning message, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
6. when the above-mentioned microprocessor that send the special-purpose thunderbolt of electric tower reporting system according to claim 4 receives the unusual warning message of display voltage from above-mentioned transmitter, control above-mentioned display device, show the warning message that comprises the identifying information that send electric tower that the operation abnormity of power supply takes place, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
7. the above-mentioned transmitter of the special-purpose thunderbolt of electric tower reporting system that send according to claim 3 possesses the switchgear that the control input moves power supply, when above-mentioned processor does not send warning message, close above-mentioned switchgear, when sending warning message, open switchgear, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
8. the transmitting time of the warning message of the special-purpose thunderbolt of electric tower reporting system to the transmitter on the different electric towers is installed of sending according to claim 1 is carried out different settings, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
9. one kind is sent the special-purpose thunderbolt of electric tower reporting system, send on the electric tower according to being installed in great majority, when sending electric tower generation lightning strike accident, the thunderbolt reporting system that is notified to the floor manager behind the electric tower of sending of lightning strike accident specify to take place, this system possesses to be installed in and send on the electric tower thunderbolt pick-up unit that detects lightning strike accident, when detecting lightning strike accident by above-mentioned thunderbolt pick-up unit, send a plurality of transmitters of the 1st warning message by wireless data, in certain distance, generate also the 2nd warning message of distribution provisions cognizance code behind above-mentioned the 1st warning message of long-range reception, send to the relaying receiver (at least one) of extranets then, and receive from above-mentioned relaying receiver by extranets and to show that each send the central monitoring group of electric tower lightning strike accident generation state behind the 2nd warning message, above-mentioned the 1st warning message comprises corresponding the 1st address date that send the regulation of electric tower of identification, above-mentioned cognizance code is the 2nd address date of each relaying receiver of identification, above-mentioned thunderbolt pick-up unit possesses by sending the high electric current on the electric tower to generate faradic surge coil and be installed in the surge coil two ends, blocking-up from surge coil input by the electromagnetic electromagnetic wave shielding device that send electric wire to produce, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
10. the above-mentioned transmitter that send the special-purpose thunderbolt of electric tower reporting system according to claim 9 is after calculating the corresponding lightning strike accident frequency that send electric tower, the above-mentioned warning message that comprises its flashover number of times information sends, as the special-purpose thunderbolt of the electric tower of sending of characteristics reporting system.
CN2010102709423A 2010-02-25 2010-08-27 Lightning stroke report system for power transmission tower Pending CN102169622A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100016967A KR20110097231A (en) 2010-02-25 2010-02-25 Lightning alert system for power transmission tower
KR10-2010-16967 2010-02-25

Publications (1)

Publication Number Publication Date
CN102169622A true CN102169622A (en) 2011-08-31

Family

ID=44490770

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102709423A Pending CN102169622A (en) 2010-02-25 2010-08-27 Lightning stroke report system for power transmission tower

Country Status (2)

Country Link
KR (1) KR20110097231A (en)
CN (1) CN102169622A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107064609A (en) * 2017-03-30 2017-08-18 电子科技大学 A kind of transformer station's lightning impulse prior-warning device
CN108830967A (en) * 2018-09-27 2018-11-16 云南电网有限责任公司电力科学研究院 A kind of visual Electric Power Patrol method and device
CN110221180A (en) * 2019-07-01 2019-09-10 国网四川省电力公司电力科学研究院 A kind of identification of 10kV distribution line lightning fault and localization method
CN110703052A (en) * 2019-10-16 2020-01-17 山东理工大学 Lightning stroke detection method for power equipment

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101358792B1 (en) * 2012-04-24 2014-02-10 주식회사 티지오 Apparatus for protecting electric transmission tower from lighting and management system using the same
KR102341081B1 (en) 2021-01-19 2021-12-20 유승우 Lightnig monitoring system for power transmission tower
KR102517631B1 (en) * 2022-10-26 2023-04-04 주식회사 유림기술단 Telephone pole lightning prevention system for distribution line

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214273A (en) * 1984-04-10 1985-10-26 Hitachi Cable Ltd Detecting method of lightning stroke
CN200956049Y (en) * 2006-09-29 2007-10-03 昆明铁路局科学技术研究所 Transmission line short circuit fault position timely positioning and position wireless notice device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214273A (en) * 1984-04-10 1985-10-26 Hitachi Cable Ltd Detecting method of lightning stroke
CN200956049Y (en) * 2006-09-29 2007-10-03 昆明铁路局科学技术研究所 Transmission line short circuit fault position timely positioning and position wireless notice device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107064609A (en) * 2017-03-30 2017-08-18 电子科技大学 A kind of transformer station's lightning impulse prior-warning device
CN108830967A (en) * 2018-09-27 2018-11-16 云南电网有限责任公司电力科学研究院 A kind of visual Electric Power Patrol method and device
CN108830967B (en) * 2018-09-27 2023-11-10 云南电网有限责任公司电力科学研究院 Visual power inspection method and device
CN110221180A (en) * 2019-07-01 2019-09-10 国网四川省电力公司电力科学研究院 A kind of identification of 10kV distribution line lightning fault and localization method
CN110703052A (en) * 2019-10-16 2020-01-17 山东理工大学 Lightning stroke detection method for power equipment

Also Published As

Publication number Publication date
KR20110097231A (en) 2011-08-31

Similar Documents

Publication Publication Date Title
CN102169622A (en) Lightning stroke report system for power transmission tower
US7930141B2 (en) Communicating faulted circuit indicator apparatus and method of use thereof
US20050151659A1 (en) Transmission/distribution line fault indicator with remote polling and current sensing and reporting capability
US9515691B2 (en) System and method for transmitting pollution information over an integrated wireless network
KR101295617B1 (en) System for warning thunderbolt
CN104505948A (en) Overhead high voltage line fault alarm information system based on android
US20230160784A1 (en) Conductor support structure position monitoring system
KR101154817B1 (en) Lightning alert device and system for power transmission towers
CN107069965A (en) Power distribution network step voltage electric leakage alarm device and power supply area under one's jurisdiction power distribution network electric leakage monitoring system
CN101196550B (en) Power cable monitoring device and method for monitoring power cable state using the same
KR100388361B1 (en) System for detecting lightning stroke
CN201166697Y (en) Power cable monitoring device
CN205861819U (en) Power-off of base station sensor
CN201044123Y (en) Telecontrol general purpose locomotive signal transmission device
KR20180083727A (en) Realtime salinity detecting apparatus for reclaimed land and salinity management system for reclaimed land
KR100406187B1 (en) Road control system
CN203708395U (en) Mobile television fault monitoring system
CN203786843U (en) Power cable anti-theft alarming system
CN110491057A (en) The safety pre-warning system of closed area
JPH11112414A (en) Maintenance management system for base station for mobile communication
AU2021105966A4 (en) Power sensor
CN101587618A (en) Fully-digitalized streetlamp burglary-resisting system
KR102128952B1 (en) Information broadcasting system and method having lightning protection function
CN207000476U (en) Intelligent iron shoe monitoring system
KR100751704B1 (en) Apparatus and method sensing a electric leakage position by a electric power line communication

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20110831