CN104425091A - Lightning arrester capable of monitoring wirelessly - Google Patents
Lightning arrester capable of monitoring wirelessly Download PDFInfo
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- CN104425091A CN104425091A CN201310381377.1A CN201310381377A CN104425091A CN 104425091 A CN104425091 A CN 104425091A CN 201310381377 A CN201310381377 A CN 201310381377A CN 104425091 A CN104425091 A CN 104425091A
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- zinc oxide
- lightning arrester
- module
- oxide valve
- copper electrode
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Abstract
The invention discloses a lightning arrester capable of monitoring wirelessly. The lightning arrester capable of monitoring wirelessly comprises a zinc oxide valve plate at the central part and an outer sleeve with an umbrella skirt, wherein the umbrella skirt is internally provided with an annular circuit board which is provided with a circuit, wherein the circuit comprises an electricity acquiring module and a sampling module at least; the zinc oxide valve plate is internally provided with a low-voltage zinc oxide valve plate, a first copper electrode plate, a second copper electrode plate and an aluminum electrode in a sandwiched mode, wherein the low-voltage zinc oxide valve plate corresponds to the annular circuit board; the first copper electrode plate and the second copper electrode plate are respectively pressed on the upper end surface and the lower end surface of the low-voltage zinc oxide valve plate, and are respectively electrically connected with two ends of the circuit on the annular circuit board so as to form parallel circuits of a circuit of the annular circuit board with the low-voltage zinc oxide valve plate; the aluminum electrode is pressed on the lower end surface of the second copper electrode plate; the low-voltage zinc oxide valve plate, the parallel circuits and the aluminum electrode are sequentially electrically connected so as to form a state measurement circuit for measuring the current leakage and operation times of the lightning arrester. The state measurement circuit in the lightning arrester is used for monitoring the lightning arrester so as to guarantee the accuracy and the timeliness of monitored data.
Description
Technical field
The present invention relates to lightning arrester field, particularly one can wireless monitor lightning arrester.
Background technology
Lightning arrester, as the device of protection electric equipment, can discharge the switching overvoltage energy of thunder and lightning or electric power system on the one hand, make electric equipment from the harm of instantaneous overvoltage, can block afterflow on the other hand, avoid electric power system ground short circuit.In prior art, the zinc oxide arrester (MOA) of power industry many employings better performances.
MOA is without series gap, and directly bear the effect of power system operation voltage for a long time, therefore zinc oxide valve plate is deteriorated gradually, and Leakage Current increases.Resistive current component simultaneously in Leakage Current produces active loss, makes valve block temperature increase, can produce thermal runaway when the temperature of MOA is increased beyond its thermally-stabilised limit, MOA can be caused to damage or blast, cause large-area power-cuts time serious.Therefore, MOA is monitored frequently by the temperature and Leakage Current that detect MOA.
The mode of general employing infrared measurement of temperature monitors the temperature of MOA, but the outer wrap insulating barrier of MOA, the accurate temperature of zinc oxide valve plate cannot be detected.The Leakage Current of MOA measured by usual use Leakage Current analyzer, the MOA that electric pressure is higher has substantially installed on-line computing model and has monitored Leakage Current incessantly, but usually need manual record and data analysis, labor workload is large, efficiency is low, and do not install the MOA of on-line computing model, need regular live line measurement Leakage Current value, poor real.
Summary of the invention
The present invention is to overcome defect in above-mentioned prior art, by arranging state detection circuit in lightning arrester inside, by the parameter such as temperature and Leakage Current of wireless data transceiving real time on-line monitoring lightning arrester, and the temperature of Measurement accuracy lightning arrester.
For achieving the above object, the invention provides one can wireless monitor lightning arrester, comprise the overcoat of the zinc oxide valve plate of central part and the band full skirt of parcel zinc oxide valve plate, be provided with annular circuit board in overcoat full skirt, which is provided with the circuit at least formed by electricity-fetching module and sampling module; Sandwiched in zinc oxide valve plate: low-voltage zinc oxide valve block, it is corresponding with the position of annular circuit board; First copper electrode sheet and the second copper electrode sheet, on its upper surface being crimped on low-voltage zinc oxide valve block respectively and lower surface, and the first copper electrode sheet and the second copper electrode sheet are electrically connected with the two ends of loop circuit on-board circuitry respectively, form the parallel circuits of low-voltage zinc oxide valve block and loop circuit on-board circuitry; Aluminium electrode, it is crimped on the lower surface of the second copper electrode sheet; Low-voltage zinc oxide valve block, parallel circuits, aluminium electrode are electrically connected composition state measuring circuitry successively, for measuring Leakage Current and the action frequency of lightning arrester.
Utilize the state measuring circuitry being arranged at lightning arrester inside to monitor lightning arrester, ensure that the accuracy of Monitoring Data, improve operating efficiency.
In technique scheme, the first copper electrode sheet or the second copper electrode sheet are close to temperature sensor, temperature sensor is by the control of loop circuit on-board circuitry.Temperature sensor is that the monitoring of lightning arrester provides another kind of Informational support, improves monitoring quality.
In technique scheme, annular circuit board comprises: electricity-fetching module, and it is for collecting and store the energy of total leakage current of lightning arrester, as working power and the overcurrent protection of state measuring circuitry; Sampling module, it is connected on electricity-fetching module, and sampling module is sampled to the electric current flowing through electricity-fetching module and sampled signal spread out of; Control module, it detects the electricity of electricity-fetching module and processes sampled signal.Electricity-fetching module, sampling module and control module are all arranged on annular circuit board, utilize and reveal the power supply of energy as loop, independent operation, and monitoring result is not by external interference.
In technique scheme, annular circuit board also comprises amplification adjusting module, and it receives the sampled signal of sampling module and spreads out of after process.
In technique scheme, control module comprises: electric power detection submodule, and it is for detecting the electricity of electricity-fetching module; Signal transacting submodule, it is to the number of times obtaining leakage current values and lightning arrestor movement after the signal transacting of amplification adjusting module input.Electric power detection submodule and signal transacting submodule make the state of control module real-time analysis lightning arrester.
In technique scheme, annular circuit board also comprises: temperature sensor controls submodule, and itself and temperature sensor are electrically connected, and the read-write operation of control temperature transducer.Temperature sensor controls submodule and makes control module receive the signal with analysis temperature transducer as required, and flexibility is strong.
In technique scheme, control module also comprises data and sends submodule, and the number of times of the leakage current data of acquisition, temperature data and lightning arrestor movement sends by it.
In technique scheme, annular circuit board also comprises radio-frequency (RF) receiving and transmission module and antenna, radio-frequency (RF) receiving and transmission module receives data and sends the signal of submodule, the signal that antenna is used for radio-frequency (RF) receiving and transmission module being transmitted send maybe by the Signal transmissions that receives to radio-frequency (RF) receiving and transmission module.The cooperation of radio-frequency (RF) receiving and transmission module and antenna makes monitor signal wireless receiving and dispatching, and transmission accurately facilitates.
Accompanying drawing explanation
Fig. 1 be of the present invention can the internal structure schematic diagram of wireless monitor lightning arrester;
Fig. 2 is state measuring circuitry schematic diagram of the present invention.
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-zinc oxide valve plate, 2-first copper electrode sheet, 3-low-voltage zinc oxide valve block, 4-aluminium electrode, 5-overcoat, 6-annular circuit board, 7-second copper electrode sheet.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
The zinc oxide arrester (MOA) of prior art is made up of with the insulating coating being wrapped in its outside the zinc oxide valve plate of central part, and overcoat is composite silicone rubber material.Put outward and be provided with outstanding overcoat full skirt.
The present invention inserts the first copper electrode sheet, low-voltage zinc oxide valve block, the second copper electrode sheet and aluminium electrode from top to bottom successively in the zinc oxide valve plate of zinc oxide arrester (MOA) central part of prior art, annular circuit board is inserted in overcoat full skirt inside, form state measuring circuitry, but on outward appearance without any impact.
As shown in Figure 1, annular circuit board 6 is provided with in the inside of zinc oxide arrester overcoat full skirt, low-voltage zinc oxide valve block 3 is provided with at the central part corresponding with annular circuit board 6 position, the upper/lower terminal face of low-voltage zinc oxide valve block 3 crimps respectively the first copper electrode sheet 2 and the second copper electrode sheet 7 that diameter is identical, at the lower surface of the second copper electrode sheet 7 crimping aluminium electrode 4.Zinc oxide valve plate 1, low-voltage zinc oxide valve block 3 are identical with the diameter of aluminium electrode 4, and the diameter of the first copper electrode sheet 2 and the second copper electrode sheet 7 is slightly larger than the diameter of zinc oxide valve plate.
Zinc oxide valve plate 1 is as MOA resistance Rn, and low-voltage zinc oxide valve block 3 is as series resistance R
0, as shown in Figure 2, annular circuit board 6 is provided with electricity-fetching module, sampling module, amplification adjusting module, control module, radio-frequency (RF) receiving and transmission module and antenna.Electricity-fetching module is for collecting the total leakage current I with store M OA resistance Rn
renergy, for other modules provide stable working power and overcurrent protection, guarantee that whole testing circuit normally works.Sampling module is connected on electricity-fetching module, and sampling module is to the electric current I flowing through electricity-fetching module
1sample and input to amplification adjusting module, amplifying adjusting module and the sampled signal after process is input to control module.Control module comprises electric power detection submodule, signal transacting submodule, temperature sensor controls submodule and data send submodule.Electric power detection submodule is for detecting the electricity of electricity-fetching module.Signal transacting submodule is to the number of times obtaining leakage current values and lightning arrestor movement after the sampled signal process of input.Temperature sensor is close on the first copper electrode sheet or the second copper electrode sheet, and controls submodule with temperature sensor and be electrically connected, and temperature sensor controls the read-write operation of submodule control temperature transducer.Data are sent submodule and are sent by radio-frequency (RF) receiving and transmission module by the number of times of the leakage current data of acquisition, temperature data and lightning arrestor movement.Antenna be used for signal that radio-frequency (RF) receiving and transmission module is transmitted send maybe by the Signal transmissions that receives to radio-frequency (RF) receiving and transmission module.
Be electrically connected the first copper electrode sheet and the second copper electrode sheet respectively at electricity-fetching module and sampling module two ends, form the parallel circuits of series resistance R0 and annular circuit board 6.The two ends of parallel circuits are electrically connected MOA resistance Rn and aluminium electrode 4 respectively.Parallel circuits and aluminium electrode composition state measuring circuitry, puncturing on circuit of the zinc oxide arrester in the prior art of connecting.
Series resistance R
0puncture voltage be usually less than 220V.Impedance on annular circuit board 6 is far smaller than series resistance R
0resistance under normal operating conditions, so when lightning arrester normally runs, flows through the electric current I of electricity-fetching module
1be far longer than and flow through series resistance R
0electric current I
0, therefore electric current I
1can Approximate Equivalent in total leakage current I of lightning arrester
r.
When lightning surge causes more greatly lightning arrestor movement, I
rgreatly increase, state measuring circuitry enters overcurrent saturation condition, now R
0both end voltage is by rising and exceed its pressure sensitive voltage, R
0in low resistive state after breakdown, most current passes through R
0release.State measuring circuitry is by detecting the number of times of self saturation current record lightning arrestor movement.
State measuring circuitry service intermittent, when the output voltage of electricity-fetching module can maintain control module normally work time, control module can start by set date detect the electricity that electricity-fetching module stores.When electricity is not enough, control module is closed data and is sent submodule and temperature sensor control submodule, stops the signal transmitting and receiving of radio-frequency (RF) receiving and transmission module and the read-write of temperature sensor.Just resting state is entered after completing electric power detection.When detecting that electricity is sufficient, control module will start the measurement of leakage current and temperature, then transfer data to radio-frequency (RF) receiving and transmission module to be sent, after the transmission completing data, control module closedown data transmission submodule and temperature sensor control submodule and enter resting state.
When without the need to providing power supply, status circuit is set in the inside of existing zinc oxide arrester, the temperature of real―time precision measurment lightning arrester, Leakage Current and action frequency, and by radio transceiver signal, avoid the error that manual operation brings, provide operating efficiency.
State measuring circuitry utilizes the leakage current of zinc oxide valve plate as unique working power, automatically realizes service intermittent, avoids the hidden danger that circuit long-term work brings.
Be only a specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (8)
1. can a wireless monitor lightning arrester, comprise the overcoat of the zinc oxide valve plate of central part and the band full skirt of the described zinc oxide valve plate of parcel, it is characterized in that:
Be provided with annular circuit board in described overcoat full skirt, which is provided with the circuit at least formed by electricity-fetching module and sampling module;
Sandwiched in described zinc oxide valve plate:
Low-voltage zinc oxide valve block, it is corresponding with the position of described annular circuit board;
First copper electrode sheet and the second copper electrode sheet, on its upper surface being crimped on described low-voltage zinc oxide valve block respectively and lower surface, and described first copper electrode sheet and described second copper electrode sheet are electrically connected with the two ends of described loop circuit on-board circuitry respectively, form the parallel circuits of described low-voltage zinc oxide valve block and described loop circuit on-board circuitry;
Aluminium electrode, it is crimped on the lower surface of described second copper electrode sheet;
Described low-voltage zinc oxide valve block, described parallel circuits, described aluminium electrode are electrically connected composition state measuring circuitry successively, for measuring Leakage Current and the action frequency of lightning arrester.
2. according to claim 1 can wireless monitor lightning arrester, it is characterized in that, described first copper electrode sheet or described second copper electrode sheet are close to temperature sensor, described temperature sensor is by the control of described loop circuit on-board circuitry.
3. according to claim 1 and 2 can wireless monitor lightning arrester, it is characterized in that, described annular circuit board comprises:
Electricity-fetching module, it is for collecting and store the energy of total leakage current of lightning arrester, as working power and the overcurrent protection of described state measuring circuitry;
Sampling module, it is connected on described electricity-fetching module, and described sampling module is sampled to the electric current flowing through described electricity-fetching module and sampled signal spread out of;
Control module, it detects the electricity of described electricity-fetching module and processes described sampled signal.
4. according to claim 3 can wireless monitor lightning arrester, it is characterized in that, described annular circuit board also comprises amplification adjusting module, and it receives sampled signal of described sampling module and spreads out of after process.
5. according to claim 4 can wireless monitor lightning arrester, it is characterized in that, described control module comprises:
Electric power detection submodule, it is for detecting the electricity of described electricity-fetching module;
Signal transacting submodule, obtains the number of times of leakage current values and lightning arrestor movement after its signal transacting inputted described amplification adjusting module.
6. according to claim 3 can wireless monitor lightning arrester, it is characterized in that, described annular circuit board also comprises: temperature sensor controls submodule, and itself and described temperature sensor are electrically connected, and control the read-write operation of described temperature sensor.
7. according to claim 6 can wireless monitor lightning arrester, it is characterized in that, described control module also comprises data and sends submodule, and the number of times of the leakage current data of acquisition, temperature data and lightning arrestor movement sends by it.
8. according to claim 7 can wireless monitor lightning arrester, it is characterized in that, described annular circuit board also comprises radio-frequency (RF) receiving and transmission module and antenna, described radio-frequency (RF) receiving and transmission module receives described data and sends the signal of submodule, described antenna be used for the signal that described radio-frequency (RF) receiving and transmission module transmits to send maybe by the Signal transmissions that receives to described radio-frequency (RF) receiving and transmission module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310381377.1A CN104425091B (en) | 2013-08-28 | 2013-08-28 | Lightning arrester capable of monitoring wirelessly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310381377.1A CN104425091B (en) | 2013-08-28 | 2013-08-28 | Lightning arrester capable of monitoring wirelessly |
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| Publication Number | Publication Date |
|---|---|
| CN104425091A true CN104425091A (en) | 2015-03-18 |
| CN104425091B CN104425091B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310381377.1A Expired - Fee Related CN104425091B (en) | 2013-08-28 | 2013-08-28 | Lightning arrester capable of monitoring wirelessly |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510779A (en) * | 2015-12-01 | 2016-04-20 | 国网四川省电力公司资阳供电公司 | Arrester on-line monitoring system and application method thereof |
| CN105510778A (en) * | 2015-12-01 | 2016-04-20 | 国网四川省电力公司资阳供电公司 | Arrester on-line monitoring terminal device |
| CN107064709A (en) * | 2016-12-28 | 2017-08-18 | 上海欧忆能源科技有限公司 | Outdoor arrester |
| CN107680761A (en) * | 2017-09-18 | 2018-02-09 | 西安唯实输配电技术有限公司 | A kind of electric railway intelligent metal oxide arrester and preparation method |
| CN108051106A (en) * | 2017-12-04 | 2018-05-18 | 中国电力科学研究院有限公司 | A kind of test of lightning arrester temperature measuring equipment |
| CN114823015A (en) * | 2022-06-29 | 2022-07-29 | 山东泰开互感器有限公司 | Overvoltage protector, manufacturing method and capacitor voltage transformer |
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| JPH03219581A (en) * | 1989-11-13 | 1991-09-26 | Mitsubishi Electric Corp | Monitor of zinc oxide arrester |
| CN101359528A (en) * | 2007-07-31 | 2009-02-04 | 上海电气自动化设计研究所有限公司 | Jointing construction for sampling valve plate for resistence leakage current of lightning arrester |
| CN202649293U (en) * | 2012-04-20 | 2013-01-02 | 山西省电力公司大同供电分公司 | Arrester on-line detecting system |
| CN202794300U (en) * | 2012-08-14 | 2013-03-13 | 南京卓实电气有限责任公司 | Online monitoring device of power transmission line lightening arrester |
| CN103235214A (en) * | 2013-04-07 | 2013-08-07 | 武汉新电电气技术有限责任公司 | Online monitoring system for zinc oxide lightening arrestor of transmission lines |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH03219581A (en) * | 1989-11-13 | 1991-09-26 | Mitsubishi Electric Corp | Monitor of zinc oxide arrester |
| CN101359528A (en) * | 2007-07-31 | 2009-02-04 | 上海电气自动化设计研究所有限公司 | Jointing construction for sampling valve plate for resistence leakage current of lightning arrester |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510779A (en) * | 2015-12-01 | 2016-04-20 | 国网四川省电力公司资阳供电公司 | Arrester on-line monitoring system and application method thereof |
| CN105510778A (en) * | 2015-12-01 | 2016-04-20 | 国网四川省电力公司资阳供电公司 | Arrester on-line monitoring terminal device |
| CN105510779B (en) * | 2015-12-01 | 2018-03-06 | 国网四川省电力公司资阳供电公司 | A kind of arrester on-line monitoring system and its application method |
| CN107064709A (en) * | 2016-12-28 | 2017-08-18 | 上海欧忆能源科技有限公司 | Outdoor arrester |
| CN107680761A (en) * | 2017-09-18 | 2018-02-09 | 西安唯实输配电技术有限公司 | A kind of electric railway intelligent metal oxide arrester and preparation method |
| CN107680761B (en) * | 2017-09-18 | 2019-07-02 | 西安唯实输配电技术有限公司 | A kind of electric railway intelligent metal oxide arrester and preparation method |
| CN108051106A (en) * | 2017-12-04 | 2018-05-18 | 中国电力科学研究院有限公司 | A kind of test of lightning arrester temperature measuring equipment |
| CN108051106B (en) * | 2017-12-04 | 2021-03-26 | 中国电力科学研究院有限公司 | Temperature measuring device for lightning arrester test |
| CN114823015A (en) * | 2022-06-29 | 2022-07-29 | 山东泰开互感器有限公司 | Overvoltage protector, manufacturing method and capacitor voltage transformer |
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