CN202693699U - On-line detection device of overhead line and current transformer (CT) electricity-taking power unit - Google Patents
On-line detection device of overhead line and current transformer (CT) electricity-taking power unit Download PDFInfo
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- CN202693699U CN202693699U CN2012202803877U CN201220280387U CN202693699U CN 202693699 U CN202693699 U CN 202693699U CN 2012202803877 U CN2012202803877 U CN 2012202803877U CN 201220280387 U CN201220280387 U CN 201220280387U CN 202693699 U CN202693699 U CN 202693699U
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Abstract
The utility model discloses an on-line detection device of an overhead line and a current transformer (CT) electricity-taking power unit. The on-line detection device comprises a rechargeable battery, a CT electricity-taking power unit and a data processing module. The CT electricity-taking power unit comprises an energy-taking mutual inductor used to take electric energy from an electric power line and an energy-taking power module used to carry out rectification and filtering, electricity-taking regulation and protection, isolation and voltage stabilization processing on electric energy taken by the energy-taking mutual inductor, and supply power for the data processing module and charge the rechargeable battery. An output end of the energy-taking mutual inductor is connected with the energy-taking power module, and the energy-taking power module is connected with the data processing module. The CT electricity-taking power unit is installed on the electric power line to take the electric energy from the electric power line to supply power for the on-line detection device and charge the rechargeable battery, if energy of induced current can not be taken because of power-off, the rechargeable battery can supply power for the on-line detection device, and therefore the problem that the on-line detection device can not work because of the power-off can be solved.
Description
Technical field
The utility model relates to overhead transmission line Signal Collection Technology field, particularly a kind of on-line measuring device of overhead transmission line and CT power taking supply unit.
Background technology
High speed development along with national economy, all trades and professions are increasing to the demand of electric power, requirement to the quality of power supply (such as the stability of electric energy, continuity etc.) is also more and more higher, it is particularly important that thereby the security of ultra-high-tension power transmission line and stability seem, therefore be necessary to realize on line real-time monitoring at ultra-high-tension power transmission line, with guarantee ultra-high-tension power transmission line normally, safely and steadly operation, this also is an urgent demand of present intelligent grid development.
Development along with power technology, the electrical equipment that is operated on the ultra-high-tension power transmission line is also more and more, such as power circuit on-line measuring device, line facility anti-theft device etc., because most transmission line of electricity is remote, be difficult to routinely way solution power supply supply problem, thereby the modes such as sun power, battery, microwave, light power supply are generally adopted in the power supply of these equipment.
Solar powered owing to being subjected to the restriction of the factors such as energy conversion rate, climatic environment and cost, can't fully satisfy equipment to energy supply aspect round-the-clock and the requirement of long-time stability aspect, therefore have to add accumulator with storage of electrical energy, and solar panel bulky also being unfavorable for installs.Adopt powered battery, because the life problems (general 2 to 3 years) of accumulator itself causes being difficult on the ultra-high-tension power transmission line popularize so that the maintenance cost of equipment increases greatly, be difficult to realize the on line real-time monitoring function.The light power supply mode is to convert electrical energy into luminous energy by low pressure end, delivering to high-pressure side through optical fiber transmission, to be converted into electric energy be power devices again, this mode is limited by geographical conditions, because high voltage overhead lines passes through some isolated areas more, such as mountain area, forest etc., need to increase in addition low pressure end, and then increased cost, and equipment is complicated, and cost is high, and conversion efficiency and power are little.
Therefore need to seek a kind of new power supply mode, can be steady in a long-term provide enough power for overhead transmission line high-side devices especially online detection instrument.
The utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of on-line measuring device and CT power taking supply unit of overhead transmission line, and CT power taking supply unit can be long-term stable powers for on-line measuring device.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of on-line measuring device of overhead transmission line, it comprises: rechargeable battery, CT power taking supply unit and for detection of signal on the line of electric force, and the data processing module that the detection power line signal is processed; Described CT power taking supply unit is connected with rechargeable battery with data processing module, and described data processing module is connected with rechargeable battery; Wherein:
Described CT power taking supply unit comprises:
Being used for obtaining getting of electric energy from line of electric force can mutual inductor;
Be used for to get the electric power signal of can mutual inductor obtaining carry out rectifying and wave-filtering, power taking regulate protection, and the isolation voltage stabilizing process to data processing module power supply and can power module to getting of rechargeable battery charging;
Described get can mutual inductor output terminal with get and can be connected by power module, the described energy power module of getting is connected with data processing module.
In the on-line measuring device of described overhead transmission line, described data processing module comprises: input/output module, communication module, crystal oscillator, reseting module, display screen, keyboard and processor; Described input/output module, communication module, crystal oscillator, reseting module, display screen, keyboard, get can power module to be connected with processor with rechargeable battery and be connected.
In the on-line measuring device of described overhead transmission line, described data processing module also comprises the analog signal conditioner unit of sampling for to the signal of getting the collection of energy mutual inductor; Described analog signal conditioner unit is connected with processor.
In the on-line measuring device of described overhead transmission line, described data processing module also comprises the warning lamp be used to the duty that is presented at line detector, and described warning lamp is connected with processor.
In the on-line measuring device of described overhead transmission line, described processor is dsp processor.
In the on-line measuring device of described overhead transmission line, described getting can comprise by power module:
Be used for carrying out the rectification filtering unit that rectifying and wave-filtering is processed to getting the electric energy that can mutual inductor obtains;
Be used for the electric power signal that rectification filtering unit is processed is regulated and limited the power taking adjusting protected location of the electric energy of getting the output of energy mutual inductor;
Be used for the electric power signal of power taking adjusting protected location output is isolated the isolation voltage regulation unit that voltage stabilizing is processed;
Described get can mutual inductor, rectification filtering unit, power taking regulate protected location, isolation voltage regulation unit, data processing module and connect successively.
In the on-line measuring device of described overhead transmission line, described getting can comprise iron core and pitch of the laps by mutual inductor, and described pitch of the laps is wrapped on the iron core, and the output terminal of coil connects the input end of getting the energy power module.
A kind of CT power taking supply unit of overhead transmission line is used for power taking from the line of electric force, and converts electric energy to and power to external unit, and it comprises:
Being used for obtaining getting of electric energy from line of electric force can mutual inductor;
Be used for to get the electric power signal of can mutual inductor obtaining carry out rectifying and wave-filtering, power taking regulate protection, and the isolation voltage stabilizing process can power module to getting of external unit power supply;
Described get can mutual inductor output terminal with get and can be connected by power module, the described energy power module of getting is connected with external unit.
In the CT power taking supply unit of described overhead transmission line, described getting can comprise by power module:
Be used for carrying out the rectification filtering unit that rectifying and wave-filtering is processed to getting the electric power signal of can mutual inductor obtaining;
Be used for the voltage that rectification filtering unit is processed is regulated and limited the power taking adjusting protected location of the electric energy of getting the input of energy mutual inductor;
Be used for the voltage of power taking adjusting protected location output is isolated the isolation voltage regulation unit that voltage stabilizing is processed;
Described get can mutual inductor, rectification filtering unit, power taking regulate protected location, isolation voltage regulation unit, external unit and connect successively.
In the CT power taking supply unit of described overhead transmission line, described getting can comprise iron core and pitch of the laps by mutual inductor, and described pitch of the laps is wrapped on the iron core, and the output terminal of coil connects the input end of getting the energy power module.
Compared to prior art, the on-line measuring device of the overhead transmission line that the utility model provides and CT power taking supply unit, its on-line measuring device comprises data processing module, rechargeable battery and CT power taking supply unit, obtain electric energy on the line of electric force to the on-line measuring device power supply and charge to rechargeable battery by CT power taking supply unit is installed at line of electric force, if when getting less than faradic energy because of line outage, transfer rechargeable battery to and power to on-line measuring device, solve the problem that causes on-line measuring device to work for because of power failure.Therefore the utlity model has characteristics such as adapting to various inclement weathers, round-the-clock reliable and stable power supply, long-term non-maintaining operation, thereby overcome the weak point of existing power supply technique, is the excellent selection of checkout equipment on the line of electric force, the power supply of circuit burglary-resisting installation.
Description of drawings
Fig. 1 is the structural representation of the on-line measuring device of the utility model overhead transmission line.
Fig. 2 is the structured flowchart of data processing module in the on-line measuring device of the utility model overhead transmission line.
Embodiment
CT power taking supply unit is that a kind of electromagnetic induction principle that utilizes obtains electric energy; and the novel power supply device of realization burning voltage output; its energy long-time running is reliable and stable; technology maturation; the transmission line of electricity curent change had very strong adaptive faculty; possess short circuit and dash current self-protection, can be the online examination and controlling equipment of all kinds of transmission lines of electricity reliable power supply is provided.
CT power taking supply unit of the present utility model is installed on the high-tension line, because it gets the distinctive feature on energy mode and the design concept, make it have the characteristics such as the various inclement weathers of adaptation, round-the-clock reliable and stable power supply, long-term non-maintaining operation, thereby overcome existing power supply technique weak point, become the excellent selection that solves a built-in unit energy supply difficult problem.
For making the purpose of this utility model, technical scheme and effect clearer, clear and definite, referring to the accompanying drawing embodiment that develops simultaneously the utility model is further described.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1 and Fig. 2, the on-line measuring device of the overhead transmission line that the utility model provides comprises data processing module 10, rechargeable battery 20 and CT power taking supply unit 30, described CT power taking supply unit 30 and data processing module 10 are connected with rechargeable battery and are connected, and described data processing module 10 is connected with rechargeable battery 20.
Wherein, described CT power taking supply unit 30 is connected with line of electric force 11, for power taking from line of electric force 11, and convert electric energy to the on-line measuring device power supply and to rechargeable battery 20 chargings, described data processing module 10 is for detection of the signal on the line of electric force 11, and the detection power line signal processed, detect the failure message on the circuit, and communicate by letter with background server.
Please continue to consult Fig. 1, described CT power taking supply unit 30 comprises to be got energy mutual inductor 301 and gets energy power module 302, described get can mutual inductor 301 two output terminals with get and can be connected by power module 302, the described energy power module 302 of getting is connected with data processing module 10.Wherein, the described outside that can mutual inductor 301 be located at line detector of getting so that its power taking from the line of electric force, described data processing module 10, rechargeable battery 20 and with get and can be arranged in the described on-line measuring device by 302 of power modules.
After CT power taking supply unit 30 was installed, described getting can be set on the line of electric force 11 by mutual inductor 301, was used for obtaining electric energy induction generation current from line of electric force 11; Described get can power module 302 be used for to get the electric power signal of can mutual inductor 301 obtaining carry out rectifying and wave-filtering, power taking regulate protection, and the isolation voltage stabilizing process to data processing module 10 and other module for power supply that need to power of on-line measuring device, and to rechargeable battery 20 charging energy-storings.
In the practical example of the utility model, see also Fig. 2, described data processing module 10 comprises: input/output module 101, communication module 102, crystal oscillator 103, reseting module 104, display screen 105, keyboard 106 and processor 107; Described input/output module 101, communication module 102, crystal oscillator 103, reseting module 104, display screen 105, keyboard 106, get can power module 302 to be connected with rechargeable battery and be connected with processor 107 respectively.
When line of electric force 11 tunnel has a power failure, continued to processor 107 power supplies by rechargeable battery 20, and when line of electric force 11 is normal, by 30 power supplies of CT power taking supply unit, solved the difficult problem of on-line measuring device power supply on the line of electric force 11.
Described communication module 102 is preferably RS232 interface or RS-485 interface, it can be connected with remote server by wired mode, the data that processor 107 is processed send to remote server storage, and the data of perhaps by remote server processor 107 being processed are done further processing.Described display screen 105 is LCD display, the data of its intuitively video-stream processor 107 processing, and show that the user is by the data of keyboard 106 inputs.In the present embodiment, described processor 107 adopts the DSP(Digital Signal Processing of super low-power consumption, digital signal processing) processor, guarantee defencive function reliable fast startup under any condition.And provide its work required oscillation frequency by crystal oscillator 103.Reseting module 104 is used for when data processing module 10 powers on it being resetted.
Please continue to consult Fig. 2, described data processing module 10 also comprises analog signal conditioner unit 108 and warning lamp 109, is connected with warning lamp and is connected with processor 107 in analog signal conditioner unit 108.Analog signal conditioner unit 108 is used for the signal of getting 301 collections of energy mutual inductor is sampled, and is transferred to processor 107, is provided with AD sampling holding circuit and AD converter in the DPS processor.Warning lamp 109 is used for being presented at the duty of line detector, such as system running state, system failure alarm, communication indication etc.
Please continue to consult Fig. 1; get and can power module 302 comprise that rectification filtering unit 321, power taking regulate protected location 322 and isolation voltage regulation unit 323, described get can mutual inductor 301, rectification filtering unit 321, power taking regulate protected location 322, isolation voltage regulation unit 323, data processing module 10 and connect successively.
Described rectification filtering unit 321 is used for carrying out rectifying and wave-filtering and processing getting the electric energy that can mutual inductor 301 obtains; described power taking is regulated protected location 322 and is used for the electric energy of getting 301 inputs of energy mutual inductor is regulated and limited to the voltage of rectification filtering unit 321 processing, and isolation voltage regulation unit 323 is used for that the voltage that power taking adjusting protected location 322 is exported is isolated voltage stabilizing to be processed.
Described getting can comprise iron core 311 and pitch of the laps 312 by mutual inductor 301, described unshakable in one's determination 311 are set on the line of electric force 11, described pitch of the laps 312 is wrapped on unshakable in one's determination 311, and two output terminals of coil 312 connect get can power module 302 input end, directly connect rectification filtering unit 321 herein.
The utility model can mutual inductor 301 obtains electric energy from transmission pressure by getting, and then get can power module 302 in output, gets can power module 302 carry out rectifying and wave-filtering to it and process and realize isolation voltage stabilizing output.Get and to include power taking adjusting protected location 322 by power module 302; the electric energy of energy mutual inductor 301 is got in adjusting that can be real-time and restriction; absorption is because of the instantaneous large-current that the special circumstances such as thunderbolt cause, guarantee when the transmission pressure electric current is unstable still can stable output voltage to data processing module 10.
The utility model embodiment is the corresponding CT power taking supply unit that a kind of overhead transmission line is provided also, and it comprises that gets can mutual inductor and get can power module, described get can mutual inductor output terminal with get and can be connected by power module, the described energy power module of getting is connected with external unit.Because this CT power taking supply unit is above being described in detail, repeats no more herein.
In sum, the utility model is by installing CT power taking supply unit and obtain electric energy on the line of electric force to the on-line measuring device power supply and charging to rechargeable battery at line of electric force, if when getting less than faradic energy because of line outage, transfer rechargeable battery to and power to on-line measuring device, solve the problem that causes on-line measuring device to work for because of power failure.Therefore the utlity model has characteristics such as adapting to various inclement weathers, round-the-clock reliable and stable power supply, long-term non-maintaining operation, thereby overcome the weak point of existing power supply technique, is the excellent selection of checkout equipment on the line of electric force, the power supply of circuit burglary-resisting installation.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. the on-line measuring device of an overhead transmission line is characterized in that, comprising: rechargeable battery, CT power taking supply unit and for detection of the signal on the line of electric force, and the data processing module that the detection power line signal is processed; Described CT power taking supply unit is connected with rechargeable battery with data processing module, and described data processing module is connected with rechargeable battery; Wherein:
Described CT power taking supply unit comprises:
Being used for obtaining getting of electric energy from line of electric force can mutual inductor;
Be used for to get the electric power signal of can mutual inductor obtaining carry out rectifying and wave-filtering, power taking regulate protection, and the isolation voltage stabilizing process to data processing module power supply and can power module to getting of rechargeable battery charging;
Described get can mutual inductor output terminal with get and can be connected by power module, the described energy power module of getting is connected with data processing module.
2. the on-line measuring device of overhead transmission line according to claim 1 is characterized in that, described data processing module comprises: input/output module, communication module, crystal oscillator, reseting module, display screen, keyboard and processor; Described input/output module, communication module, crystal oscillator, reseting module, display screen, keyboard, get can power module to be connected with processor with rechargeable battery and be connected.
3. the on-line measuring device of overhead transmission line according to claim 2 is characterized in that, described data processing module also comprises the analog signal conditioner unit of sampling for to the signal of getting the collection of energy mutual inductor; Described analog signal conditioner unit is connected with processor.
4. the on-line measuring device of overhead transmission line according to claim 2 is characterized in that, described data processing module also comprises the warning lamp be used to the duty that is presented at line detector, and described warning lamp is connected with processor.
5. according to claim 2 or the on-line measuring device of 3 or 4 described overhead transmission lines, it is characterized in that, described processor is dsp processor.
6. the on-line measuring device of overhead transmission line according to claim 1 is characterized in that, described getting can comprise by power module:
Be used for carrying out the rectification filtering unit that rectifying and wave-filtering is processed to getting the electric power signal of can mutual inductor obtaining;
Be used for the electric power signal that rectification filtering unit is processed is regulated and limited the power taking adjusting protected location of the electric energy of getting the output of energy mutual inductor;
Be used for the voltage of power taking adjusting protected location output is isolated the isolation voltage regulation unit that voltage stabilizing is processed;
Described get can mutual inductor, rectification filtering unit, power taking regulate protected location, isolation voltage regulation unit, data processing module and connect successively.
7. the on-line measuring device of overhead transmission line according to claim 1 is characterized in that, described getting can comprise iron core and pitch of the laps by mutual inductor, and described pitch of the laps is wrapped on the iron core, and the output terminal of coil connects the input end of getting the energy power module.
8. the CT power taking supply unit of an overhead transmission line is used for power taking from the line of electric force, and converts electric energy to and power to external unit, it is characterized in that, comprising:
Being used for obtaining getting of electric energy from line of electric force can mutual inductor;
Be used for to get the electric power signal of can mutual inductor obtaining carry out rectifying and wave-filtering, power taking regulate protection, and the isolation voltage stabilizing process can power module to getting of external unit power supply;
Described get can mutual inductor output terminal with get and can be connected by power module, the described energy power module of getting is connected with external unit.
9. the CT power taking supply unit of overhead transmission line according to claim 8 is characterized in that, described getting can comprise by power module:
Be used for carrying out the rectification filtering unit that rectifying and wave-filtering is processed to getting the electric power signal of can mutual inductor obtaining;
Be used for the voltage that rectification filtering unit is processed is regulated and limited the power taking adjusting protected location of the electric energy of getting the input of energy mutual inductor;
Be used for the voltage of power taking adjusting protected location output is isolated the isolation voltage regulation unit that voltage stabilizing is processed;
Described get can mutual inductor, rectification filtering unit, power taking regulate protected location, isolation voltage regulation unit, external unit and connect successively.
10. the CT power taking supply unit of overhead transmission line according to claim 8 is characterized in that, described getting can comprise iron core and pitch of the laps by mutual inductor, and described pitch of the laps is wrapped on the iron core, and the output terminal of coil connects the input end of getting the energy power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202803877U CN202693699U (en) | 2012-06-14 | 2012-06-14 | On-line detection device of overhead line and current transformer (CT) electricity-taking power unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202803877U CN202693699U (en) | 2012-06-14 | 2012-06-14 | On-line detection device of overhead line and current transformer (CT) electricity-taking power unit |
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| CN202693699U true CN202693699U (en) | 2013-01-23 |
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| CN2012202803877U Expired - Fee Related CN202693699U (en) | 2012-06-14 | 2012-06-14 | On-line detection device of overhead line and current transformer (CT) electricity-taking power unit |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872792A (en) * | 2014-02-24 | 2014-06-18 | 北京中凯科电电力技术有限公司 | Current transformer online powering device |
| CN103944222A (en) * | 2014-04-11 | 2014-07-23 | 北京昊创瑞通电气设备有限公司 | Overhead line fault detection terminal, power supply device of overhead line fault detection terminal, and system with overhead line fault detection terminal |
| CN104393668A (en) * | 2014-11-29 | 2015-03-04 | 国家电网公司 | Distribution line online monitoring communication terminal supporting utilizing power from high-voltage line |
| CN104501976A (en) * | 2015-01-12 | 2015-04-08 | 国网上海市电力公司 | Passive wireless temperature acquisition system |
| CN104748870A (en) * | 2015-04-02 | 2015-07-01 | 杨志强 | Passive wireless temperature current sensor |
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN106960760A (en) * | 2017-05-05 | 2017-07-18 | 郑州大学 | A kind of distal end assisted heating device of SF6 breakers |
| CN106971899A (en) * | 2017-05-05 | 2017-07-21 | 郑州大学 | One kind prevents the liquefied intelligent temperature control system of extremely frigid zones SF6 breaker arc extinguishing media |
| CN108736567A (en) * | 2018-06-29 | 2018-11-02 | 国家电网有限公司 | Power supply system for electric power monitoring |
| CN110146774A (en) * | 2019-06-24 | 2019-08-20 | 安徽工程大学 | A kind of high-voltage AC transmission cable short dot detection system |
| CN111751656A (en) * | 2020-06-05 | 2020-10-09 | 水木源华电气有限公司 | Voltage and current measurement energy-taking device for power transmission and distribution line |
| CN112152316A (en) * | 2020-09-01 | 2020-12-29 | 杭州电力设备制造有限公司 | Electric power apron on-line monitoring device |
| CN112924476A (en) * | 2021-01-29 | 2021-06-08 | 上海科技大学 | X-ray imaging and online electricity taking system of overhead cable |
| CN114069466A (en) * | 2021-07-28 | 2022-02-18 | 广西电网有限责任公司电力科学研究院 | Induction power-taking type binocular vision power transmission line crossing point monitoring device |
| CN114167178A (en) * | 2021-12-02 | 2022-03-11 | 华北电力大学 | Electric signal measuring device for high-voltage overhead line |
| CN115480095A (en) * | 2022-09-19 | 2022-12-16 | 威胜电气有限公司 | Device and method for detecting after-stop and power restoration of electric energy meter |
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2012
- 2012-06-14 CN CN2012202803877U patent/CN202693699U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103872792A (en) * | 2014-02-24 | 2014-06-18 | 北京中凯科电电力技术有限公司 | Current transformer online powering device |
| CN103944222A (en) * | 2014-04-11 | 2014-07-23 | 北京昊创瑞通电气设备有限公司 | Overhead line fault detection terminal, power supply device of overhead line fault detection terminal, and system with overhead line fault detection terminal |
| CN104393668A (en) * | 2014-11-29 | 2015-03-04 | 国家电网公司 | Distribution line online monitoring communication terminal supporting utilizing power from high-voltage line |
| CN104501976A (en) * | 2015-01-12 | 2015-04-08 | 国网上海市电力公司 | Passive wireless temperature acquisition system |
| CN104748870A (en) * | 2015-04-02 | 2015-07-01 | 杨志强 | Passive wireless temperature current sensor |
| CN106568523A (en) * | 2016-11-10 | 2017-04-19 | 中国电力科学研究院 | Wireless temperature measuring system for high-voltage isolating switch |
| CN106960760A (en) * | 2017-05-05 | 2017-07-18 | 郑州大学 | A kind of distal end assisted heating device of SF6 breakers |
| CN106971899A (en) * | 2017-05-05 | 2017-07-21 | 郑州大学 | One kind prevents the liquefied intelligent temperature control system of extremely frigid zones SF6 breaker arc extinguishing media |
| CN106971899B (en) * | 2017-05-05 | 2019-08-13 | 郑州大学 | One kind preventing the liquefied intelligent temperature control system of extremely frigid zones SF6 breaker arc extinguishing medium |
| CN106960760B (en) * | 2017-05-05 | 2019-12-03 | 郑州大学 | A kind of distal end assisted heating device of SF6 breaker |
| CN108736567B (en) * | 2018-06-29 | 2024-02-09 | 国家电网有限公司 | Power supply system for power monitoring |
| CN108736567A (en) * | 2018-06-29 | 2018-11-02 | 国家电网有限公司 | Power supply system for electric power monitoring |
| CN110146774A (en) * | 2019-06-24 | 2019-08-20 | 安徽工程大学 | A kind of high-voltage AC transmission cable short dot detection system |
| CN110146774B (en) * | 2019-06-24 | 2022-09-06 | 安徽工程大学 | High-voltage alternating-current transmission cable short-circuit point detection system |
| CN111751656A (en) * | 2020-06-05 | 2020-10-09 | 水木源华电气有限公司 | Voltage and current measurement energy-taking device for power transmission and distribution line |
| CN112152316A (en) * | 2020-09-01 | 2020-12-29 | 杭州电力设备制造有限公司 | Electric power apron on-line monitoring device |
| CN112924476A (en) * | 2021-01-29 | 2021-06-08 | 上海科技大学 | X-ray imaging and online electricity taking system of overhead cable |
| CN114069466A (en) * | 2021-07-28 | 2022-02-18 | 广西电网有限责任公司电力科学研究院 | Induction power-taking type binocular vision power transmission line crossing point monitoring device |
| CN114167178A (en) * | 2021-12-02 | 2022-03-11 | 华北电力大学 | Electric signal measuring device for high-voltage overhead line |
| CN115480095A (en) * | 2022-09-19 | 2022-12-16 | 威胜电气有限公司 | Device and method for detecting after-stop and power restoration of electric energy meter |
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