CN102645573A - Noncontact ultrahigh voltage electricity detector - Google Patents
Noncontact ultrahigh voltage electricity detector Download PDFInfo
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- CN102645573A CN102645573A CN2012101463745A CN201210146374A CN102645573A CN 102645573 A CN102645573 A CN 102645573A CN 2012101463745 A CN2012101463745 A CN 2012101463745A CN 201210146374 A CN201210146374 A CN 201210146374A CN 102645573 A CN102645573 A CN 102645573A
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Abstract
A noncontact ultrahigh voltage electricity detector comprises an ultrasonic wave receive unit, an electromagnetic signal receive unit, a shielded enclosure and a master control circuit board, wherein the ultrasonic wave receive unit comprises an ultrasonic transducer and a directional ultrasound millimeter wave signal receiver which is of a nonmetal paraboloid structure, and the ultrasonic transducer is installed at the focal position of the directional ultrasound millimeter wave signal receiver through an installation support and is electrically connected with the master control circuit board; the electromagnetic signal receive unit comprises an even number of electromagnetic signal receive antennas which are arranged on the directional ultrasound millimeter wave signal receiver and symmetrically distributed close to the edge of the directional ultrasound millimeter wave signal receiver along the circumference, and the electromagnetic signal receive antennas are electrically connected with the master control circuit board; and the master control circuit board is provided with an ultrasonic signal process module, a multichannel electromagnetic signal process module, a data display module, an audio output module and a process chip. The noncontact ultrahigh voltage electricity detector is combined with signals having different characteristics and forms, thus realizing the location of high voltage equipment electricity detection; and the noncontact ultrahigh voltage electricity detector is good in directivity and high in sensibility.
Description
Technical field
The invention belongs to charging equipment electrical verification technical field in the electric system, relate in particular to and a kind ofly charging equipment is carried out the contactless UHV (ultra-high voltage) electroscopic device that electrical verification detects based on what ultrasound wave and electromagnetic induction combined.
Background technology
High-voltage electric power circuit is the lifeblood of national economy; Alive circuit and charging equipment are ubiquitous in the electric system of actual motion; Must discern and locate electrified body before staff's conducting transmission line and the equipment testing; After definite circuit is charged, just can not carry out service work, thereby guarantee personal safety and guarantee the normal operation of electric system.Electroscope is to be used for detecting whether have one of common tool of voltage on the power equipment; Charged body identification of UHV (ultra-high voltage) both at home and abroad and location technology can be divided into two big types by the electrical verification mode at present: one type is identification of contact electrified body and location technology, and another kind of is contactless inspection electrified body identification and location technology.Wherein, the contact electroscope is existing practical application in electric system, and existing relevant criterion has been carried out standard to the galvanoscopic design of contact, manufacturing machine test method; And contactless electroscope also is in development and experimental stage at present.
The existing contact electroscope mainly contains high-tension electricity condensing type electroscope, sparking distance method electroscope, divider resistance formula electroscope etc.Because the contact electroscope must directly contact with high-tension apparatus when electrical verification is operated, therefore exist control lever long, inconvenience is carried; Not easy-operating shortcoming, in supertension line and equipment occasion, safe distance is far away especially; Insulating requirements is high, under the situation that the insulation condition can not get guaranteeing, has certain potential safety hazard at the electric pressure height; Influence personal safety easily, cause unnecessary economic loss and casualties; Simultaneously along with UHV (ultra-high voltage), the technological maturation of UHV transmission; The electric pressure of transmission line of electricity is increasingly high; According to the regulation of ultra-high-tension power transmission line terrain clearance, in general the line voltage distribution grade is high more, and the line security required distance is just high more; The length and the amount of deflection of general electrical verification bar are difficult to meet the demands, and have brought inconvenience for the galvanoscopic operation of contact.
In view of the galvanoscopic above deficiency of contact; The non-contact type electricity checking device has received widely and having paid close attention to; Existing contactless electrified body identification and location technology mainly are to utilize the method for electromagnetic induction; High pressure power frequency electric field signal intensity is measured, through electromagnetic theory result of calculation, thus the voltage and the charged identification of detection electrified body.Like the patent No. is that 200720125147.9 Chinese utility model patent, the patent No. are that 201020170413.1 the Chinese utility model patent and the patent No. are 201120035590.3 the disclosed several kinds of extra-high voltage electroscopy equipments of Chinese utility model patent, mainly comprises indicating circuit, memory expansion circuit that links to each other with microprocessor that the output terminal of Ultraviolet sensor circuit, photoelectric isolating circuit, microprocessor, humiture collection circuit, touch-control control circuit, microprocessor links to each other and the power circuit that links to each other with Ultraviolet sensor circuit, photoelectric isolating circuit, microprocessor, humiture collection circuit, touch-control control circuit respectively; The Ultraviolet sensor circuit links to each other with the input end of microprocessor through photoelectric isolating circuit, and the output terminal of the output terminal of humiture collection circuit, touch-control control circuit links to each other with the input end of microprocessor.Obtain the discharge signal of the high-pressure system in the coverage by the ultraviolet transducing circuit, transfer to processor and carry out signal Processing, through processor statistics discharge pulse numerical value electrical equipment is carried out electrical verification again and detect.Though above-mentioned several kinds of non-contact type electricity checking devices can effectively be avoided the personal safety accident; The assurance power system security is produced; But repeatability is bad as a result, reliability is not high in the ubiquity electrical verification, the shortcoming of directivity difference; It is charged to be difficult to on-the-spot accurately which phase circuit of judgement or equipment, can't effectively realize accurate location.
Summary of the invention
The purpose of this invention is to provide a kind of good directionality, highly sensitive, accurately the non-contact type ultrasonic electroscopic device of the particular location of positioning belt electric line or equipment.
To achieve these goals, the present invention takes following technical solution:
The non-contact type high voltage electroscopic device comprises: ultrasound wave receiving element, electromagnetic signal receiving element, metallic shield housing and be arranged at the main control board in the said shield shell; The ultrasound wave receiving element comprises that ultrasonic transducer and the directional ultrasound millimeter-wave signal that is arranged at the shield shell front end receive body; It is the paraboloidal structure that nonmetallic materials are processed that this directional ultrasound millimeter-wave signal receives body; Ultrasonic transducer is installed in the focal position that the directional ultrasound millimeter-wave signal receives body through mounting bracket, and ultrasonic transducer is electrically connected with main control board; The electromagnetic signal receiving element comprises that even number is arranged on the directional ultrasound millimeter-wave signal reception body and near the electromagnetic signal receiving antenna of directional ultrasound millimeter-wave signal reception body edge along the circumference symmetrical distribution, the electromagnetic signal receiving element is electrically connected with main control board; The process chip that main control board is provided with the ultrasonic signal processing module that links to each other with the ultrasound wave receiving element, the hyperchannel electromagnetic signal processing module that links to each other with the electromagnetic signal receiving element, data disaply moudle, audio frequency output module and links to each other with ultrasonic signal processing module, electromagnetic signal processing module, data disaply moudle and audio frequency output module respectively; Process chip is carried out the laggard line of numbers narrow-band filtering of sample conversion to ultrasonic signal that is received from the ultrasonic signal processing module and the electromagnetic signal that is received from hyperchannel electromagnetic signal processing module and is handled and digital signal feature extraction and judgement; And electromagnetic signal carried out symmetric channel difference processing and location computing, result is sent to data disaply moudle and audio frequency output module exports.
Ultrasonic signal processing module of the present invention comprises ultrasound wave filtering circuit, ultrasound wave amplifying circuit, ultrasound wave frequency conversion demodulator circuit and the ultrasound wave envelope detecting circuit that links to each other successively, is used for that the ultrasonic signal that receives is carried out filtering, amplification, frequency conversion demodulation and detection and handles.
Hyperchannel electromagnetic signal processing module of the present invention comprises that corresponding electromagnetic wave filtering circuit that links to each other with said electromagnetic signal receiving antenna and electromagnetic wave amplify and detecting circuit, is used for that the electromagnetic wave signal that receives is carried out filtering, amplification and detection and handles.
Audio frequency output module of the present invention comprises the D/A modular converter and driving amplifying circuit that links to each other successively.
Electromagnetic signal receiving antenna of the present invention is double-deck PBC structure.
The present invention is provided with optical foresight at said shield shell top.
The present invention receives on the body at said directional ultrasound millimeter-wave signal and is processed with observation port, and said observation port is positioned on the horizontal optical axis of said optical foresight.
The present invention adopts ultrasound wave to detect the mode that combines with electromagnetic signal; Ultrasonic signal and ELECTROMAGNETIC RADIATION SIGNATURE to the radiation of supertension line corona discharge carry out directive reception; The ultrasonic signal that receives is carried out the envelope detection processing and in the back-end chip processing procedure, the envelope signal after the detection carried out the extraction of power frequency component frequecy characteristic; Through showing and monitoring the charged situation that power frequency component image and sound are judged charging equipment; Avoided in the conventional ultrasound wave detecting method directly the ultrasonic signal that receives being sampled and monitored and the erroneous judgement that possibly cause, thereby improved the accuracy of electrical verification; The receiving element that adopts multichannel electromagnetic signal receiving antenna to form simultaneously; The multiple signals that receive are carried out difference processing; Devices to test level and vertical position are positioned, thereby the electrical verification that realizes high voltage alive equipment detects, accurately concrete certain the charged uniline in location.The present invention has made full use of the ultrasound examination good directionality, anti-electromagnetic interference capability is strong and the highly sensitive characteristics of electromagnetic signal, adopts non-contacting mode to detect, and can operate at a distance, can guarantee operator's safety.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is a schematic block circuit diagram of the present invention;
Fig. 4 detects synoptic diagram for electrical verification of the present invention;
Fig. 5 is the synoptic diagram of the embodiment of the invention 3;
Fig. 6 is the synoptic diagram of the embodiment of the invention 4.
Below in conjunction with accompanying drawing and each embodiment to further explain of the present invention.
Embodiment
As shown in Figure 1, the UHV (ultra-high voltage) electroscopic device of present embodiment comprises ultrasound wave receiving element 1, electromagnetic signal receiving element 2, shield shell 3, handle 4 and optical foresight 5.Wherein, ultrasound wave receiving element 1 comprises that ultrasonic transducer 1a, directional ultrasound millimeter-wave signal receive body 1b and mounting bracket 1c.
As preferred embodiment, be provided with optical foresight 5 at shield shell 3 tops, receive on the body 1b at the directional ultrasound millimeter-wave signal and be processed with observation port a, observation port a is positioned on the horizontal optical axis of optical foresight 5.Adopt optical aiming device, through the light assist location, operating personnel can locate electrified body more exactly when electrical verification detected in the safe distance scope, avoided contacting with high-tension apparatus, and are safe.In addition; When directional ultrasound millimeter-wave signal reception body 1b adopts transparent nonmetallic materials to process; On directional ultrasound millimeter-wave signal reception body 1b, then observation port a need not be set, optical foresight 5 can directly see through directional ultrasound millimeter-wave signal reception body 1b observe the location.
As shown in Figure 3; Main control board of the present invention is provided with ultrasonic signal processing module A, hyperchannel electromagnetic signal processing module B, process chip C, data disaply moudle D and audio frequency output module E; Process chip C links to each other with ultrasonic signal processing module A, hyperchannel electromagnetic signal processing module B, data disaply moudle D and audio frequency output module E respectively, and the model of process chip C is C8051F021 in the present embodiment.Ultrasonic signal processing module A comprises ultrasound wave filtering circuit, ultrasound wave amplifying circuit, ultrasound wave frequency conversion demodulator circuit and the ultrasound wave envelope detecting circuit that connects successively; After ultrasonic transducer 1a receives ultrasonic millimeter-wave signal; Signal is sent among the ultrasonic signal processing module A; Carry out the frequency conversion demodulation after by ultrasonic signal processing module A ultrasonic millimeter-wave signal filtering being amplified and envelope detection is handled, be sent to process chip C then.Hyperchannel electromagnetic signal processing module B comprises that electromagnetic wave filtering circuit and electromagnetic wave amplify and detecting circuit; The present invention is provided with a plurality of electromagnetic signal receiving antennas; Each electromagnetic signal receiving antenna links to each other with detecting circuit with one road electromagnetic wave filtering circuit and electromagnetic wave amplification separately; Hyperchannel electromagnetic signal processing module B will carry out filtering, amplification and detection from the electromagnetic wave signal of multichannel electromagnetic signal receiving antenna to be handled, and is sent to process chip C then.Electromagnetic signal of the present invention adopts multichannel electromagnetic signal receiving antenna to receive the accurate location that can realize charged high-tension apparatus.Process chip C carries out the A/D sample conversion to the ultrasonic signal and the electromagnetic signal that receive, extracts the effective information of electrical verification signal, and the multichannel electromagnetic signal is carried out difference processing location computing.Process chip C is sent to data disaply moudle D with result, shows that through data disaply moudle D the model of the data disaply moudle of present embodiment is DM100X; Result is also through audio frequency output module E output simultaneously, and the audio frequency output module E of present embodiment comprises the D/A modular converter that connects successively and drive amplifying circuit that result forms audio frequency output through D/A conversion and amplification back, rear end.
Whether charged the ultimate principle of ultrasonic wave electrified body identification of the present invention and location technology is: detect high-tension line or the equipment ultrasonic signal that produces during through the corona discharge on the detection high-tension line and the ELECTROMAGNETIC RADIATION SIGNATURE when charged carries out; Ultrasound wave receiving element and the electromagnetic signal receiving element formed by multichannel electromagnetic signal receiving antenna received ultrasonic signal and electromagnetic signal respectively at first; Send the signal that receives to separately signal processing module then; Corresponding signal processing module at first all carries out Filtering Processing respectively to ultrasonic signal and electromagnetic signal; Then to ultrasonic signal amplify, frequency conversion demodulation and envelope detection handle; Electromagnetic signal is carried out amplification demodulator handle, ultrasonic signal after the processing and electromagnetic signal are sent to process chip together; The inner A/D modular converter of process chip carries out sample conversion to ultrasonic signal and electromagnetic signal and becomes digital signal; Then ultrasonic signal after the conversion and electromagnetic signal are carried out digital narrow-band filtering processing; To strengthen the interference free performance of electroscopic device, guarantee the accuracy of electrical verification; Adopt Digital Signal Processing respectively digital ultrasonic signal and electromagnetic signal to be carried out the extraction of power frequency characteristic frequency then; Judge whether signal is ultrasonic signal and the electromagnetic signal that electrified body produces; Simultaneously the hyperchannel electromagnetic signal is carried out the symmetric channel difference processing; Judge that the directional ultrasound millimeter-wave signal receives body and whether aims at electrified body to be tested, thereby confirm the charged situation of Devices to test and level and vertical direction; Then result is exported through image and audio frequency respectively, obtained electrified body identification and positioning result.The present invention combines heterogeneity, multi-form signal, realizes the accurate location of high-tension line and equipment electrical verification.
As shown in Figure 4; In actual detected; The ultrahigh voltage power circuit or the equipment that the electroscopic device aligning are needed detection; Utilize earphone and display to monitor, observe discharge and electromagnetic signal that whether the corona that high pressure produces is arranged,, explain that then circuit is charged when shows signal is the corona rectified signal monitored simultaneously of power frequency characteristic signal during also for the power frequency characteristic sounds; Mobile electroscopic device is to the sound maximum and observe the then circuit for detecting of the strongest circuit of indicator signal; In addition, when the present invention combines optical aiming device, see through the respective lines that observation port can more accurately be confirmed detection.This method has fully combined the highly directive of ultrasonic millimeter wave detecting device and the high sensitivity that electromagnetic signal detects, and has designed good directionality, highly sensitive electroscope, the accurately particular location of positioning belt electric line.
Present embodiment is with embodiment 1 different place: the electromagnetic signal receiving antenna in the electromagnetic signal receiving element of present embodiment is for covering the double-decker of copper on the two sides of pcb board.Adopt double-deck receiving antenna to be more conducive to the stable of space reception signal, the electromagnetic signal that receiving antenna receives is carried out the differential type processing and compared through hyperchannel again, thus the location of achieve a butt joint collection of letters level and vertical direction.
As shown in Figure 5; Present embodiment is with embodiment 1 different place: the electromagnetic signal receiving element 2 of present embodiment has comprised that 2 are arranged at the electromagnetic signal receiving antennas that are symmetrically distributed along circumference that receive body 1b upper marginal position at the directional ultrasound millimeter-wave signal, this electromagnetic signal receiving antenna be shaped as round sheet.
As shown in Figure 6, present embodiment is with embodiment 1 different place: the electromagnetic signal receiving element 2 of present embodiment has comprised that 8 are arranged at intervals at the electromagnetic signal receiving antenna along the circumference symmetrical distribution that receives body 1b upper marginal position at the directional ultrasound millimeter-wave signal.
The present invention can be used for exchanging detection, demonstration, warning of the electrified body voltages such as supply line, high-tension apparatus and high-pressure test device that the 50Hz rated voltage is 220KV-1000KV etc., compares with existing high voltage electroscope to have the following advantages:
Can whether charged at the outer non-contact testing measured object of electrical safety distance, good directionality, degree of discrimination height is avoided contacting with high-tension apparatus, and is safe.
Adopt directional ultrasound wave transducer and multichannel electromagnetic signal receiving element; Through ultrasound wave passage and electromagnetism hyperchannel signal is carried out filtering and signal characteristic extract filtering interfering, extract the electrical verification signal effective information, realize multiple signals location computing, difference processing and comparison, the accurate location of realizing circuit under test or equipment level and vertical direction.
The directional ultrasound millimeter-wave signal receives body and adopts nonmetallic materials, and is in light weight, is easy to carry.
Structural design is convenient to operation, and the handle design hommization is conveniently used and carried.
Operation can be carried out on ground, alleviates the labour intensity of high-tension line maintenance greatly, saves labor, and improves the work efficiency of electric power overhaul.
Claims (7)
1. non-contact type high voltage electroscopic device comprises: the shield shell of ultrasound wave receiving element, electromagnetic signal receiving element, metal and be arranged at the main control board in the said shield shell; It is characterized in that:
Said ultrasound wave receiving element comprises that ultrasonic transducer and the directional ultrasound millimeter-wave signal that is arranged at said shield shell front end receive body; It is the paraboloidal structure that nonmetallic materials are processed that said directional ultrasound millimeter-wave signal receives body; Said ultrasonic transducer is installed in the focal position that said directional ultrasound millimeter-wave signal receives body through mounting bracket, and said ultrasonic transducer is electrically connected with said main control board;
The electromagnetic signal receiving antenna that said electromagnetic signal receiving element comprises that even number is arranged at intervals at that said directional ultrasound millimeter-wave signal receives on the body and receives the body edge and be symmetrically distributed along circumference near said directional ultrasound millimeter-wave signal, said electromagnetic signal receiving element is electrically connected with said main control board;
The process chip that said main control board is provided with the ultrasonic signal processing module that links to each other with the ultrasound wave receiving element, the hyperchannel electromagnetic signal processing module that links to each other with the electromagnetic signal receiving element, data disaply moudle, audio frequency output module and links to each other with the audio frequency output module with said ultrasonic signal processing module, hyperchannel electromagnetic signal processing module, data disaply moudle respectively; Said process chip is carried out the laggard line of numbers narrow-band filtering of sample conversion to ultrasonic signal that is received from the ultrasonic signal processing module and the electromagnetic signal that is received from hyperchannel electromagnetic signal processing module and is handled and digital signal feature extraction and judgement; And electromagnetic signal carried out symmetric channel difference processing and location computing, result is sent to data disaply moudle and audio frequency output module exports.
2. non-contact type high voltage electroscopic device according to claim 1; It is characterized in that: said ultrasonic signal processing module comprises ultrasound wave filtering circuit, ultrasound wave amplifying circuit, ultrasound wave frequency conversion demodulator circuit and the ultrasound wave envelope detecting circuit that connects successively, is used for that the ultrasonic signal that receives is carried out filtering, amplification, frequency conversion demodulation and envelope detection and handles.
3. non-contact type high voltage electroscopic device according to claim 1; It is characterized in that: said hyperchannel electromagnetic signal processing module comprises that corresponding electromagnetic wave filtering circuit that links to each other with said electromagnetic signal receiving antenna and electromagnetic wave amplify and detecting circuit, is used for that the electromagnetic wave signal that receives is carried out filtering, amplification and detection and handles.
4. non-contact type high voltage electroscopic device according to claim 1 is characterized in that: said audio frequency output module comprises the D/A modular converter and driving amplifying circuit that connects successively.
5. non-contact type high voltage electroscopic device according to claim 1 is characterized in that: said electromagnetic signal receiving antenna is double-deck PCB structure.
6. non-contact type high voltage electroscopic device according to claim 1 is characterized in that: be provided with optical foresight at said shield shell top.
7. non-contact type high voltage electroscopic device according to claim 6 is characterized in that: receive on the body at said directional ultrasound millimeter-wave signal and be processed with observation port, said observation port is positioned on the horizontal optical axis of said optical foresight.
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| CN201210146374.5A CN102645573B (en) | 2012-05-11 | 2012-05-11 | Noncontact ultrahigh voltage electricity detector |
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| CN201210146374.5A CN102645573B (en) | 2012-05-11 | 2012-05-11 | Noncontact ultrahigh voltage electricity detector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103091547A (en) * | 2013-02-04 | 2013-05-08 | 杭州双东电力科技有限公司 | Full voltage class wireless electroscope |
| CN103344818A (en) * | 2013-06-19 | 2013-10-09 | 国家电网公司 | Non-contact electroscope and electroscopy |
| CN106370728A (en) * | 2016-12-02 | 2017-02-01 | 河南宏博测控技术有限公司 | Power grid fault ultrasonic testing device and method |
| CN106645890A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | High voltage electroscopic system |
| CN106645891A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | Power grid high-voltage line live part verification method |
| CN108169542A (en) * | 2018-01-10 | 2018-06-15 | 云南电网有限责任公司电力科学研究院 | A kind of Multi-purpose non-contact electricity tester |
| CN111025006A (en) * | 2019-12-20 | 2020-04-17 | 云南电网有限责任公司玉溪供电局 | Non-contact voltage detection and phase recognition device |
| CN113945812A (en) * | 2021-09-28 | 2022-01-18 | 海南电网有限责任公司电力科学研究院 | Near-field space pulse radiation positioning sensor |
| CN115032468A (en) * | 2022-08-10 | 2022-09-09 | 广东电网有限责任公司佛山供电局 | Device and method for identifying direction of charged body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106645890A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | High voltage electroscopic system |
| CN106645891A (en) * | 2016-11-16 | 2017-05-10 | 合肥普望电子有限责任公司 | Power grid high-voltage line live part verification method |
| CN106370728A (en) * | 2016-12-02 | 2017-02-01 | 河南宏博测控技术有限公司 | Power grid fault ultrasonic testing device and method |
| CN108169542A (en) * | 2018-01-10 | 2018-06-15 | 云南电网有限责任公司电力科学研究院 | A kind of Multi-purpose non-contact electricity tester |
| CN108169542B (en) * | 2018-01-10 | 2020-03-31 | 云南电网有限责任公司电力科学研究院 | Non-contact electricity testing device |
| CN111025006A (en) * | 2019-12-20 | 2020-04-17 | 云南电网有限责任公司玉溪供电局 | Non-contact voltage detection and phase recognition device |
| CN113945812A (en) * | 2021-09-28 | 2022-01-18 | 海南电网有限责任公司电力科学研究院 | Near-field space pulse radiation positioning sensor |
| CN115032468A (en) * | 2022-08-10 | 2022-09-09 | 广东电网有限责任公司佛山供电局 | Device and method for identifying direction of charged body |
| CN115032468B (en) * | 2022-08-10 | 2022-10-21 | 广东电网有限责任公司佛山供电局 | Device and method for identifying direction of charged body |
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