CN212514768U - Lightning arrester on-line monitor adopting leakage current for power supply - Google Patents
Lightning arrester on-line monitor adopting leakage current for power supply Download PDFInfo
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- CN212514768U CN212514768U CN201922404951.6U CN201922404951U CN212514768U CN 212514768 U CN212514768 U CN 212514768U CN 201922404951 U CN201922404951 U CN 201922404951U CN 212514768 U CN212514768 U CN 212514768U
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Abstract
The utility model aims at providing an online monitor of lightning arrester powered by leakage current, which comprises a lightning arrester detection mechanism, the lightning arrester detection mechanism comprises a lightning arresting receiving rod and a lightning arresting detection box body, the lightning arresting detection box body is designed into a cylindrical structure, the lightning arresting receiving rod is fixed at the upper end of the lightning arresting detection box body through a rotary fixing device, the electric leakage output end in the lightning arresting detection box body is connected with a lightning arresting detection counting system capable of being powered by the leakage current through a conductive lead, the input end of the lightning arresting detection counting system is directly connected with the lightning arresting receiving rod to store energy, then the full current and the negative current of the leakage current of the lightning arrester are sampled by using a detection circuit and are sent out by wireless, thereby effectively collecting the times of lightning stroke, improving the collection precision, effectively improving the timeliness of detection and solving the problem of the dependence of an external power supply, the service life can be effectively prolonged, and the reliability is strong.
Description
Technical Field
The utility model relates to a transmission of electricity transformer information acquisition field in the relevant aspect mainly involves an adopt arrester on-line monitoring ware of leakage current power supply.
Background
With the development of social and economic life, the requirement for electricity utilization is relatively high for people, especially in the application of power distribution and power transmission of a transformer substation, but most attention needs to be paid to avoiding the influence of electric shock in the power distribution and power transmission at the present stage, and the electric shock has a great influence on power transmission, so that a lightning arrester needs to be installed in a power transmission transformer line and the number of lightning strokes is counted during actual power transmission, but a lightning stroke counter is widely applied to a plurality of power lines at the present stage, and as the power grid is continuously developed, the line inspection work is more heavy and the danger coefficient is higher, so that an online lightning arrester monitoring system capable of automatically wiping and transmitting relevant data is urgently needed, but at present, the online lightning arrester monitoring system is mainly realized by adopting a battery power supply or solar power supply mode, so that the cost is greatly increased, and the use time period is prolonged, the corresponding fittings also need to be replaced, are relatively complex and costly.
Therefore, an adopt arrester on-line monitoring ware of leakage current power supply is provided, through improving traditional thunderbolt count detecting system, adopt and use super capacitor to gather arrester leakage current, store the energy, then utilize detection circuitry to sample arrester leakage current's full current and negative current, and send away through wireless, can enough effectually gather the thunderbolt number of times, improve the collection precision, the promptness that effectual improvement detected, utilize leakage current to charge simultaneously and can solve external power source's dependence problem, can also effectual increase of service life, high reliability, just become the problem that needs to solve for urgent need of technical staff in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an adopt arrester on-line monitoring ware of leakage current power supply, through improving traditional thunderbolt count detecting system, adopt and use super capacitor to gather arrester leakage current, store the energy, then utilize detection circuitry to sample arrester leakage current's full current and negative current, and send away through wireless, can reach effectually gather the thunderbolt number of times, improve the collection precision, the timeliness of effectual improvement detection, utilize leakage current to charge simultaneously and can solve external power source's dependence problem, can also effectual increase of service life, high reliability.
For solving the background art in technical problem, the utility model discloses a following technical scheme:
the utility model provides an adopt arrester on-line monitoring ware of leakage current power supply, includes arrester detection mechanism, arrester detection mechanism include lightning-arrest receiving rod and lightning-arrest detection box, lightning-arrest detection box establish to cylindric structure, lightning-arrest receiving rod pass through rotatory fixing device and fix the upper end at lightning-arrest detection box, the internal electric leakage output of lightning-arrest detection box be connected with the lightning-arrest detection counting system that can the power supply of leakage current through electrically conductive lead wire, the input of lightning-arrest detection counting system directly be connected with lightning-arrest receiving rod.
Preferably, rotatory fixing device include connecting block and rotation axis, connecting block one end vertical fixation on lightning-arrest detection box top, the connecting block other end pass through the rotation axis and be connected with lightning-arrest receiving rod, it can be rotatory rotary device fix lightning-arrest receiving rod to set up through detecting box top in lightning-arrest, can effectually realize the regulation of each direction of lightning-arrest receiving rod, effectually adjust fixedly the optional position, the adaptation intensity of the lightning-arrest receiving rod of effectual improvement.
Preferably, the top of lightning-arrest detection box be equipped with two detachable fixed mounting pieces, two fixed mounting piece on be equipped with the fixed orifices, and establish to 90 degrees contained angles between two fixed mounting pieces, be 90 degrees fixed mounting pieces through two contained angles, the stability intensity when can the fixed of the lightning-arrest detection box of effectual improvement, through the stress mutual restriction of 90 degrees contained angles, the deformation that the stress variation when can effectually preventing to install leads to is not hard up.
Preferably, lightning-arrest detection count system include main control chip system, current type voltage transformer and current detection chip, the current of lightning-arrest receiving rod pass through one side of current type voltage transformer and be connected with the input of rectifier bridge, the output and the current output of rectifier bridge are connected, the current type voltage transformer opposite side is connected with peak value follower circuit's positive input end through the input that current detection chip passes through the positive terminal of amplifier, second order band pass filter's input passes through resistance R6 and is connected with the negative pole end of amplifier, second order band pass filter's output is connected with peak value follower circuit's positive input.
Preferably, one side of the rectifier bridge is connected with the input end of the lightning stroke counter, the output end 2 of the lightning stroke counter is connected with the super energy storage capacitor in an electric connection mode, the super energy storage capacitor is connected with the voltage detection chip, and an ammeter P1 is arranged between the lightning stroke counter and the super energy storage capacitor.
Preferably, the main control chip system is a minimum system formed by a single chip microcomputer, and a chip in the main control chip system is an STM32L051C8T6 chip.
Preferably, a 433MHz wireless module is further arranged in the lightning protection detection counting system.
Preferably, the lightning protection detection counting system further comprises a power supply circuit consisting of the acquisition electric chip and the main control chip.
Preferably, the leakage current charging threshold of the lightning protection detection and counting system is 140 μ a, and the lightning protection detection and counting system sends data to the leakage current, the resistive current, the lightning stroke frequency and the ambient temperature 10 hours after the first charging, and sends data to the outside every 8 hours thereafter.
The technical principle is as follows: because most of power transmission lines adopt an alternating current transmission mode, the leakage current of the lightning arrester is also 50Hz alternating current, and due to the equivalent capacitance of the lightning arrester, the voltage phase applied to the two ends of the lightning arrester and the phase of the leakage current have certain phase difference. The ratio of the total current of the arrester consisting of resistive current and capacitive current is normally about 1 to 4, the leakage current is led out from two ends of the zinc oxide valve plate through a lead wire and enters a rectifier bridge through a current type voltage transformer, the rectified current flows through a lightning stroke counter and an ammeter head and finally enters a super capacitor to charge the super capacitor, a current signal which is induced by the current type voltage transformer and has large current, such as the leakage current, enters a sampling circuit, after the super capacitor is charged to reach a certain voltage, the whole circuit starts to work, the single chip microcomputer drives the power supply chip to supply power to the sampling circuit, the sampling circuit filters signals after starting to work, the signals are amplified and sent to the pins of the single chip microcomputer ADC to be sampled, the single chip microcomputer turns off the power supply of the sampling circuit after sampling is finished, electric energy is saved, then relevant calculation is carried out, and meanwhile temperature and humidity data of the surrounding environment of the lightning arrester are collected. And finally, the single chip microcomputer packs the acquired data of the leakage current of the lightning arrester, the lightning stroke frequency of the lightning arrester and the environmental temperature and humidity data, the data are sent out through 433MHz wireless signals, the single chip microcomputer enters a stop mode after the data are sent out, the electric energy is saved, the whole system is in a non-power-off state, when the lightning stroke is experienced, the single chip microcomputer can record, and after the specified wake-up time is reached, the single chip microcomputer enters a working state again to acquire related data and then sends the related data.
Through the design, the power supply problem of the online arrester monitor is solved, the tower climbing operation of line patrol workers is reduced through wireless transmission, and the risk is reduced.
The utility model has the advantages that:
1) the leakage current of the lightning arrester is collected by the aid of the super capacitor, energy is stored, then the full current and the negative current of the leakage current of the lightning arrester are sampled by the aid of the detection circuit, the full current and the negative current are transmitted in a wireless mode, lightning stroke times can be effectively collected, collection precision is improved, and timeliness of detection is effectively improved.
2) The problem of dependence of an external power supply can be solved by charging with leakage current, the service life can be effectively prolonged, and the reliability is high.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of an arrester on-line monitor using leakage current for power supply according to the present invention;
fig. 2 is a schematic structural diagram of an arrester on-line monitor using leakage current to supply power according to the present invention;
fig. 3 is a schematic system circuit diagram of the lightning arrester online monitor powered by leakage current according to the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail below.
Referring to fig. 1, 2 and 3, an online lightning arrester monitor powered by leakage current includes a lightning arrester detection mechanism, the lightning arrester detection mechanism includes a lightning arrester receiving rod 4 and a lightning arrester detection box 1, the lightning arrester detection box 1 is a cylindrical structure, the lightning arrester receiving rod 4 is fixed at the upper end of the lightning arrester detection box 1 through a rotary fixing device, an electric leakage output end in the lightning arrester detection box 1 is connected with a lightning arrester detection counting system powered by leakage current through a conductive lead, and an input end of the lightning arrester detection counting system is directly connected with the lightning arrester receiving rod 4.
Further, rotatory fixing device include connecting block 2 and rotation axis 3, 2 one end vertical fixation of connecting block on the 1 top of lightning-arrest detection box, 2 other ends of connecting block pass through rotation axis 3 and be connected with lightning-arrest receiving rod 4, fix lightning-arrest receiving rod 4 through set up the rotary device that can rotate on 1 top of lightning-arrest detection box, can effectually realize the regulation of 4 each directions of lightning-arrest receiving rod, effectually adjust fixedly to the optional position, effectual improvement lightning-arrest receiving rod 4's adaptation intensity.
Further, the top of lightning-arrest detection box 1 be equipped with two detachable fixed mounting pieces 6, two fixed mounting piece 6 on be equipped with fixed orifices 5, and establish to 90 degrees contained angles between two fixed mounting pieces 6, be 90 degrees fixed mounting pieces 6 through two contained angles, stability when can the fixed of the lightning-arrest detection box 1 of effectual improvement, through the stress mutual restriction of 90 degrees contained angles, the deformation that the stress change when can effectually preventing to install leads to is not hard up.
Further, lightning-arrest detection count system include main control chip system, current type voltage transformer and current detection chip, the current of lightning-arrest receiving rod pass through one side of current type voltage transformer and be connected with the input of rectifier bridge, the output and the current output of rectifier bridge are connected, the current type voltage transformer opposite side is passed through the current detection chip and is connected with peak value follower circuit's positive input end through the positive terminal's of amplifier input, second order band pass filter's input is passed through resistance R6 and is connected with the negative pole end of amplifier, second order band pass filter's output and peak value follower circuit's positive input end are connected.
Furthermore, one side of rectifier bridge be connected with the input of thunderbolt counter, the output 2 of thunderbolt counter is connected with super energy storage capacitor through electric connection mode, super energy storage capacitor is connected with the voltage detection chip, be equipped with ampere meter P1 between thunderbolt counter and the super energy storage capacitor.
Further, the main control chip system is a minimum system formed by a single chip microcomputer, and a chip in the main control chip system adopts an STM32L051C8T6 chip.
Furthermore, a 433MHz wireless module is also arranged in the lightning protection detection counting system.
Furthermore, the lightning protection detection counting system also comprises a power supply circuit consisting of an acquisition electric chip and a main control chip.
Further, the leakage current charging threshold of the lightning protection detection and counting system is 140 muA, and the lightning protection detection and counting system sends data to the leakage current, the resistive current, the lightning stroke frequency and the ambient temperature 10 hours after the lightning protection detection and counting system is charged for the first time, and sends the data to the outside every 8 hours thereafter.
Furthermore, because most of power transmission lines adopt an alternating current transmission mode, the leakage current of the lightning arrester is also 50Hz alternating current, and due to the equivalent capacitance of the lightning arrester, the phase of the voltage applied to two ends of the lightning arrester and the phase of the leakage current have certain phase difference. The total current of the lightning arrester is about 1 to 4 under the normal condition that the ratio of resistive current to capacitive current is 1, leakage current is led out from two ends of a zinc oxide valve block through a lead and enters a rectifier bridge through a current type voltage transformer, the rectified current flows through a lightning stroke counter and an ammeter head and finally enters a super capacitor to charge the super capacitor, and current signals with large current, such as leakage current and the like, induced by the current type voltage transformer enter a sampling circuit. When the super capacitor is charged to reach a certain voltage, the whole circuit starts to work, the single chip microcomputer drives the power supply chip to supply power to the sampling circuit, and the sampling circuit filters signals after starting to work, amplifies the signals and sends the signals to an ADC pin of the single chip microcomputer for sampling. After sampling, the singlechip turns off the power supply of the sampling circuit to save electric energy, then performs related calculation, and simultaneously acquires temperature and humidity data of the surrounding environment of the lightning arrester. And finally, the single chip microcomputer packs the acquired data of the leakage current of the lightning arrester, the lightning stroke frequency of the lightning arrester and the environmental temperature and humidity data, the data are sent out through 433MHz wireless signals, the single chip microcomputer enters a stop mode after the data are sent out, the electric energy is saved, the whole system is in a non-power-off state, when the lightning stroke is experienced, the single chip microcomputer can record, and after the specified wake-up time is reached, the single chip microcomputer enters a working state again to acquire related data and then sends the related data.
Through the design, the power supply problem of the online arrester monitor is solved, the tower climbing operation of line patrol workers is reduced through wireless transmission, and the risk is reduced. While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (8)
1. The utility model provides an adopt arrester on-line monitoring ware of leakage current power supply, includes arrester detection mechanism, its characterized in that: the lightning arrester detection mechanism include lightning-arrest receiving rod and lightning-arrest detection box, lightning-arrest detection box establish to cylindric structure, lightning-arrest receiving rod pass through rotatory fixing device and fix the upper end at lightning-arrest detection box, the internal electric leakage output of lightning-arrest detection box be connected with the lightning-arrest detection counting system that can the leakage current power supply through electrically conductive lead wire, the input of lightning-arrest detection counting system directly be connected with lightning-arrest receiving rod.
2. The on-line arrester monitor using leakage current as claimed in claim 1, wherein said rotation fixing means comprises a connecting block and a rotation shaft, one end of said connecting block is vertically fixed on the top end of the lightning protection detection box, and the other end of said connecting block is connected to the lightning protection receiving rod through the rotation shaft.
3. The on-line monitor for lightning arrester using leakage current to supply power of claim 1, wherein the top of the lightning arresting detection box body is provided with two detachable fixed mounting blocks, the two fixed mounting blocks are provided with fixing holes, and an included angle of 90 degrees is formed between the two fixed mounting blocks.
4. The on-line arrester monitor using leakage current as claimed in claim 1, wherein said lightning protection detection counting system comprises a main control chip system, a current-type voltage transformer and a current detection chip, the current of said lightning protection receiving rod is connected to the input end of the rectifier bridge through one side of the current-type voltage transformer, the output end of the rectifier bridge is connected to the current output of the lightning protection receiving rod, the other side of the current-type voltage transformer is connected to the positive input end of the peak value following circuit through the input end of the positive terminal of the amplifier through the current detection chip, the input end of the second-order band-pass filter is connected to the negative terminal of the amplifier through a resistor R6, and the output end of the second-order band-pass filter is connected to the positive input end of the peak value following circuit.
5. The on-line monitor for lightning arrester using leakage current as claimed in claim 4, wherein one side of said rectifier bridge is connected to the input terminal of the lightning stroke counter, the output terminal 2 of the lightning stroke counter is electrically connected to the super capacitor, the super capacitor is connected to the voltage detection chip, and an ammeter P1 is provided between the lightning stroke counter and the super capacitor.
6. The on-line monitor for lightning arrester using leakage current as claimed in claim 4, wherein the main control chip system is a minimum system composed of single-chip microcomputer, and the chip in the main control chip system is STM32L051C8T6 chip.
7. The on-line arrester monitor using leakage current as claimed in claim 1, wherein said lightning protection detection and counting system further comprises a 433MHz wireless module.
8. The on-line arrester monitor using leakage current as claimed in claim 1, wherein the lightning protection detection and counting system further comprises a power supply circuit consisting of an acquisition chip and a main control chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922404951.6U CN212514768U (en) | 2019-12-27 | 2019-12-27 | Lightning arrester on-line monitor adopting leakage current for power supply |
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| CN201922404951.6U CN212514768U (en) | 2019-12-27 | 2019-12-27 | Lightning arrester on-line monitor adopting leakage current for power supply |
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| CN212514768U true CN212514768U (en) | 2021-02-09 |
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| CN201922404951.6U Active CN212514768U (en) | 2019-12-27 | 2019-12-27 | Lightning arrester on-line monitor adopting leakage current for power supply |
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Effective date of registration: 20211108 Address after: 211100 No. 85, Xing Min Nan Road, Science Park, Jiangning District, Nanjing, Jiangsu. Patentee after: NANJING LANXIN POWER TECHNOLOGY CO.,LTD. Patentee after: SHANGHAI ELECTRIC PORCELAIN WORKS Co.,Ltd. Address before: 211100 No. 85, Xing Min Nan Road, Science Park, Jiangning District, Nanjing, Jiangsu. Patentee before: NANJING LANXIN POWER TECHNOLOGY CO.,LTD. |