CN105699742A - +/-800kV DC power transmission line hot-line electrical inspection device - Google Patents
+/-800kV DC power transmission line hot-line electrical inspection device Download PDFInfo
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- CN105699742A CN105699742A CN201610048557.1A CN201610048557A CN105699742A CN 105699742 A CN105699742 A CN 105699742A CN 201610048557 A CN201610048557 A CN 201610048557A CN 105699742 A CN105699742 A CN 105699742A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
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Abstract
The invention provides a +/-800kV DC power transmission line hot-line electrical inspection device, and the device comprises a power module, a binocular visual unit, electric field induction equipment and an electrical inspection output module, wherein the power module, the binocular visual unit, the electric field induction equipment and the electrical inspection output module are respectively connected with a microprocessor. The power management module provides working power for the microprocessor. The binocular visual unit collects image information. The microprocessor recognizes a detected wire in a DC power transmission line according to the image information, and calculates the distance from the detected wire to the device. The electric field induction equipment measures the electric field surrounding the detected wire according to the distance from the detected wire to the device. The microprocessor judges whether the detected wire is electrified or not according to the electric field measurement result. The electrical inspection output module outputs the electrification information of the detected wire. The device is small in size, is light in weight, is large in range, is high in reliability, and can achieve the contact-type or non-contact type electrical inspection of the line through an unmanned plane or an insulating operation rod.
Description
Technical field
The present invention relates to a kind of electroscopic device, in particular to one ± 800kV DC power transmission line livewire work electroscopic device。
Background technology
Along with the construction of super UHV transmission line, livewire work technology is to ensure that the important technical of circuit reliability, in order to ensure the safety of operating personnel, is important technological means to the electrical verification of circuit。Whether UHV transmission line and extra-high voltage converting equipment need to identify charged when charged and interruption maintenance, occur in case unexpected。According to the regulation in " electrical safe working order ", all having a power failure or the electrical equipment of brownout is working, it is necessary to taking power failure, electrical verification, installing earth lead, hang nameplate and the technical measures of installing cover bar。And the operational approach and step to electrical verification is made that strict regulation。At present on high pressure and ultrahigh-voltage voltage grade, the mode adopted both at home and abroad mostly is on stock and is set with condensing type electroscope carries out electrical verification, and owing to direct current does not have electric current on electric capacity, thus this mode is not appropriate for DC power transmission line。Big additionally, due to these trace clearance, insulating bar is long, and weight is very heavy, electrical verification operating difficulties on tower, thus non-contact type electricity checking mode just has obvious advantage, and the existing electroscopic device for realizing non-contact type electricity checking mode mainly includes following several:
(1) based on induction type (contactless) electroscope of UV pulse method。By high-precision ultraviolet spectrometer, record the ultraviolet in charged apparatus local discharge process and charging equipment surface corona and radiation, then carry out analysis and the process of data, thus reaching to identify the purpose of equipment live。This mode is affected substantially by weather etc., then loses efficacy when wire does not discharge。
(2) high-frequency local discharging induction type (contactless) electroscope。Rely on detection charging equipment within a certain period of time because of the principle of the intensity of hyperfrequency (350MHz～2900MHz) electromagnetic pulse of shelf depreciation generation and quantity, identify equipment live in no。Its pluses and minuses are comparatively similar to UV pulse method。It is to be noted that the induction type of this principle (contactless) electroscope result of use when mist, snow, rain etc. dislike that slightly result of use is than fine day under weather is good, and this equipment manufacturing cost is relatively low。
(3) based on induction type (contactless) electroscope of electromagnetic induction method。Induction type (contactless) electroscope of electromagnetic induction method is the principle that the surrounding space according to charging equipment exists electric field, whether charged carrys out judgment device by detection equipment surrounding space with or without electric field。Pockesl effect method and parallel plate capacitor method are the electric field measurement methods nowadays commonly used。These device volumes are big, maintenance is greatly and easily by the impact of surrounding electric field。
By to existing ± 800kV transmission line of electricity electrical verification mode and demand analysis, urgent need is a kind of reliably, use flexible and portable electroscopic device。Based on the electric-field sensor of MEMS sensor, weight is little and low in energy consumption, it is simple to adopt minute vehicle or insulating bar come close to or in contact with ± 800kV transmission line of electricity carries out contactless or contact electrical verification。This device can be effectively improved livewire work electrical verification work efficiency, reduce the labor intensity of operating risk and operating personnel, and raising ± 800kV electric transmission line hot-line technical merit and operational reliability is significant。
Summary of the invention
In order to solve the problems referred to above existing in prior art, the present invention provides one ± 800kV DC power transmission line livewire work electroscopic device。
Present invention provide the technical scheme that one ± 800kV DC power transmission line livewire work electroscopic device, it thes improvement is that: described device includes the power management module, binocular vision unit, electric field sensing device and the electrical verification result output module that are connected respectively with microprocessor；Described power management module provides the working power of described microprocessor；Described binocular vision unit gathers image information；Tested wire in described microprocessor DC power transmission line according to described image information identification, and calculate the distance between described tested wire and electroscopic device；Electric field around described electric field sensing device tested wire according to the range measurement between described tested wire and electroscopic device；According to electric field measurement result, described microprocessor judges that whether described tested wire is charged；Described electrical verification result output module exports the band electrical information of described tested wire。
Preferably, described binocular vision unit includes binocular camera and image processing module, and described binocular camera gathers the image information of measured object by two photographic head from different visual angles, and exports image information to described image processing module；Described image processing module is separated the tested wire in image information from background, adopts and inspects principle, by the three-dimensional coordinate information of some width tested wires of wire image information acquisition of different angles。
Further, microprocessor receives the tested wire three-dimensional coordinate information of described image processing module output, in conjunction with the three-dimensional coordinate information measuring point, identifies the tested wire in DC power transmission line and calculates the distance between described tested wire and electroscopic device；
When described distance is less than 15m, described microprocessor starts described electric field sensing device and measures the electric field around described tested wire, and accepts the electric field measurement result that described electric field sensing device returns；
According to described electric field measurement result, described microprocessor judges that whether described tested wire is charged, and control the information whether output of electrical verification result output module is charged。
Further, described microprocessor judges that whether described tested wire is charged by the following method: compared by the feature electric field near described electric field measurement result and ± 800kV DC power transmission line, when the difference of the electric field intensity measured and feature electric field intensity is less than 20%, it is determined that described tested wire is charged；When the difference of electric field intensity and the feature electric field intensity measured is when 20%-60%, then remeasure or change position and remeasure；If the difference of the electric field intensity measured and feature electric field intensity is more than 60%, then judge that described tested wire is not charged。
Further, described feature electric field extracts from the Electric Field Distribution model near ± 800kV DC power transmission line, and is stored in the internal memory of described microprocessor, and described microprocessor is AT89C51 system。
Further, electric field sensing device includes MEMS micro field sensor and signal conditioning circuit, described MEMS micro field sensor measures the electric field around described tested wire, and described electric field is converted into corresponding being exported after the high-frequency alternating voltage signal of Electric Field Modulated to described Signal-regulated kinase, the high-frequency alternating voltage signal received is filtered and processing and amplifying by described Signal-regulated kinase, and the high-frequency voltage signal after processing is AD converted rear output digit signals to microprocessor, described microprocessor is measured electric field value accordingly after the digital signal received is demodulated and is demarcated。
Further, described MEMS micro field sensor includes auxiliary circuit and electric field induction chip, and described auxiliary circuit for providing working power and offset signal to electric field measurement chip；Described electric field induction chip is used for measuring DC electric field intensity, and described DC electric field intensity is converted into the high-frequency alternating voltage signal of Electric Field Modulated。
Further, described auxiliary circuit and electric field induction chip are located between upper and lower metal polar plate, and described upper and lower metal polar plate is used for uniform electric field。
Preferably, described electrical verification result output module includes electrical verification indicating module, LED display lamp and speaker, described electrical verification indicating module connects described microprocessor, described LED display lamp and described speaker respectively, for receiving the low and high level switching signal of described microprocessor output, and control described LED display lamp and described speaker according to described low and high level switching signal；When described microprocessor judges wire to be measured is charged, output high level is to described electrical verification indicating module, and it is bright that described electrical verification indicating module controls described LED display lamp, and controls described speaker and send audible alarm。
Further, described electrical verification result output module also includes antenna, and described antenna is connected with described electrical verification indicating module, for information whether charged for tested conduction being sent in the handheld device of Ground Operation personnel by wireless transmission method。
Compared with immediate prior art, the present invention has following marked improvement:
1) electroscopic device provided by the invention carries out electrical verification for the feature electric field near right ± 800KV DC power transmission line, and not by the impact of the factors such as surrounding electrical body, weather and measurement distance, reliability is high；
2) present invention adopts binocular vision unit electrical verification object is identified and finds range, compared with existing ultrasound wave and laser ranging, and can automatic range and identify electrical verification object, it is to avoid manual operation is improper and the maloperation that causes and instruction；
3) present invention adopt based on the micro field sensor of MEMS measure ± 800KV DC power transmission line near feature electric field, this micro field sensor mechanical motion parts, integrated level and reliability are high, lightweight；
4) electroscopic device that the present invention adopts is except adopting red LED display lamp and speaker and informing that whether operating personnel is charged, it is also provided with antenna, it is transferred in the portable equipment of Ground Operation personnel by wireless radio transmission mode for the information whether tested wire is charged, it is simple to realize the intelligent management of the operations such as transmission line of electricity electrical verification and ground connection；
5) electroscopic device volume provided by the invention is little, lightweight, and the end that can be conveniently installed at unmanned plane and insulating bar rod carries out electrical verification operation, and due to lightweight, the labor intensity of operating personnel is little, improves working performance。
Accompanying drawing explanation
Fig. 1 is the structural representation of DC power transmission line livewire work electroscopic device provided by the invention；
Fig. 2 is the occupation mode schematic diagram of electroscopic device provided by the invention。
Wherein: the upper metal polar plate of 1-；Metal polar plate under 2-；3-MEMS micro field sensor；4-antenna；5-cross-arm；6-insulating cord；7-insulating bar；8-electroscopic device；9-insulator；The tested wire of 10-；11-tower body；12-unmanned plane。
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail。
In order to thoroughly understand the embodiment of the present invention, detailed structure will be proposed in following description。Obviously, the execution of the embodiment of the present invention is not limited to the specific details that those skilled in the art has the knack of。Presently preferred embodiments of the present invention is described in detail as follows, but except these detailed descriptions, the present invention can also have other embodiments。
The structural representation of DC power transmission line livewire work electroscopic device provided by the invention is as it is shown in figure 1, this electroscopic device 8 includes: power management module, binocular vision unit, electric field sensing device and the electrical verification result output module being connected with microprocessor respectively；Described power management module provides the working power of described microprocessor；Described binocular vision unit gathers image information；Tested wire 10 in described microprocessor DC power transmission line according to described image information identification, and calculate the distance between described tested wire 10 and electroscopic device 8；Electric field around described electric field sensing device tested wire 10 according to the range measurement between described tested wire 10 and electroscopic device 8；According to electric field measurement result, described microprocessor judges that whether described tested wire 10 is charged；Described electrical verification result output module exports the band electrical information of described tested wire 10。
Described binocular vision unit includes binocular camera and image processing module, and described binocular camera gathers the image information of measured object by two photographic head from different visual angles, and exports image information to described image processing module；Described image processing module is separated the tested wire 10 in image information from background, adopts and inspects principle, by the three-dimensional coordinate information of some tested wires 10 of width wire image information acquisition of different angles。
Described microprocessor receives tested wire 10 three-dimensional coordinate information of described image processing module output, in conjunction with the three-dimensional coordinate information measuring point, identifies the tested wire 10 in DC power transmission line and calculates the distance between described tested wire 10 and electroscopic device 8；
When described distance is less than 15m, described microprocessor starts described electric field sensing device and measures the electric field around described tested wire 10, and accepts the electric field measurement result that described electric field sensing device returns；
According to described electric field measurement result, described microprocessor judges that whether described tested wire 10 is charged, and control the information whether output of electrical verification result output module is charged。
Described microprocessor judges that whether described tested wire 10 is charged by the following method: by the feature electric field near described electric field measurement result and ± 800kV DC power transmission line (according to line construction and layout, the electric field value obtained by electromagnetic finite element software modeling simulation calculation such as ANSYS) compare, when the difference of the electric field intensity measured and feature electric field intensity is less than 20%, judge that described tested wire 10 is charged, when the difference of electric field intensity and the feature electric field intensity measured is when 20%-60%, then remeasure or change position and remeasure；If the difference of the electric field intensity measured and feature electric field intensity is more than 60%, then judge that described tested wire 10 is not charged。
Described feature electric field extracts from the Electric Field Distribution model near ± 800kV DC power transmission line, and is stored in the internal memory of described microprocessor, and described microprocessor is AT89C51 system。
Described electric field sensing device includes MEMS micro field sensor 3 and signal conditioning circuit, described MEMS micro field sensor 3 measures the electric field around described tested wire 10, and described electric field is converted into corresponding being exported after the high-frequency alternating voltage signal of Electric Field Modulated to described Signal-regulated kinase, the high-frequency alternating voltage signal received is filtered and processing and amplifying by described Signal-regulated kinase, and the high-frequency voltage signal after processing is AD converted, it is export to microprocessor after digital signal by analog-signal transitions, described microprocessor is measured electric field value accordingly after digital signal is demodulated and is demarcated。
Described MEMS micro field sensor 3 includes upper and lower metal polar plate and the auxiliary circuit being arranged between described upper and lower metal polar plate and electric field induction chip, and described upper and lower metal polar plate is used for uniform electric field；Described auxiliary circuit for providing working power and offset signal to electric field measurement chip；Described electric field induction chip is used for measuring DC electric field intensity, and described DC electric field intensity is converted into the high-frequency alternating voltage signal of Electric Field Modulated。
Described electrical verification result output module includes electrical verification indicating module, red LED display lamp and speaker, described electrical verification indicating module connects red LED display lamp, speaker and microprocessor respectively, for receiving the switching signal of the low and high level provided from microprocessor, if charged, microprocessor output high level is to electrical verification indicating module, and speaker bright by electrical verification indicating module control LED display lamp sends " charged " chimes of doom, otherwise, microprocessor output low level, red LED display lamp and speaker are failure to actuate。
Described electrical verification result output module also includes antenna 4, and described antenna 4 is connected with described electrical verification indicating module, for information whether charged for tested conduction being sent in the handheld device of Ground Operation personnel by wireless transmission method。
Below in conjunction with accompanying drawing 2, the application example of electroscopic device provided by the invention is illustrated。
When operating personnel is on cross-arm 5, select cross-arm 5 electrical verification pattern, utilize this electroscopic device 8 of insulating cord 6 to be placed into and just can carry out electrical verification to whether tested wire 10 is charged when about 10 insulator (2m) left and right distances of tested wire 10, it is possible to identify that wire is that total head is run or brownout operation。
Operating personnel is when tower body 11 electrical verification, select tower body 11 electrical verification pattern, in the position parallel with wire, end this electroscopic device 8 fixed insulation action bars 7, insulating bar 7 is utilized to stretch out the position of tower body 11 about about 4m, make electroscopic device 8 apart from the position of tested wire 10 about 15m, tested wire 10 is carried out electrical verification。
Operating personnel, when ground electrical verification, is arranged on electroscopic device 8 at the top of unmanned plane 12, and flight carries out electrical verification to the position apart from tested wire 10 about about 6m。
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit; although the present invention being described in detail with reference to above-described embodiment; the specific embodiment of the present invention still can be modified or equivalent replacement by those of ordinary skill in the field; these are without departing from any amendment of spirit and scope of the invention or equivalent replace, all within the claims that application is awaited the reply。
Claims (10)
1. one kind ± 800kV DC power transmission line livewire work electroscopic device, it is characterised in that: described device includes the power management module, binocular vision unit, electric field sensing device and the electrical verification result output module that are connected respectively with microprocessor；Described power management module provides the working power of described microprocessor；Described binocular vision unit gathers image information；Tested wire in described microprocessor DC power transmission line according to described image information identification, and calculate the distance between described tested wire and electroscopic device；Electric field around described electric field sensing device tested wire according to the range measurement between described tested wire and electroscopic device；According to electric field measurement result, described microprocessor judges that whether described tested wire is charged；Described electrical verification result output module exports the band electrical information of described tested wire。
2. electroscopic device according to claim 1, it is characterised in that:
Described binocular vision unit includes binocular camera and image processing module, and described binocular camera gathers the image information of measured object by two photographic head from different visual angles, and exports image information to described image processing module；Described image processing module is separated the tested wire in image information from background, adopts and inspects principle, by the three-dimensional coordinate information of some width tested wires of wire image information acquisition of different angles。
3. electroscopic device according to claim 2, it is characterised in that:
Microprocessor receives the tested wire three-dimensional coordinate information of described image processing module output, in conjunction with the three-dimensional coordinate information measuring point, identifies the tested wire in DC power transmission line and calculates the distance between described tested wire and electroscopic device；
When described distance is less than 15m, described microprocessor starts described electric field sensing device and measures the electric field around described tested wire, and accepts the electric field measurement result that described electric field sensing device returns；
According to described electric field measurement result, described microprocessor judges that whether described tested wire is charged, and control the information whether output of electrical verification result output module is charged。
4. electroscopic device according to claim 3, it is characterised in that:
Described microprocessor judges that whether described tested wire is charged by the following method: compared by the feature electric field near described electric field measurement result and ± 800kV DC power transmission line, when the difference of the electric field intensity measured and feature electric field intensity is less than 20%, it is determined that described tested wire is charged；When the difference of electric field intensity and the feature electric field intensity measured is when 20%-60%, then remeasure or change position and remeasure；If the difference of the electric field intensity measured and feature electric field intensity is more than 60%, then judge that described tested wire is not charged。
5. electroscopic device according to claim 4, it is characterised in that:
Described feature electric field extracts from the Electric Field Distribution model near ± 800kV DC power transmission line, and is stored in the internal memory of described microprocessor, and described microprocessor is AT89C51 system。
6. the electroscopic device according to any one in claim 1-5, it is characterised in that:
Electric field sensing device includes MEMS micro field sensor and signal conditioning circuit, described MEMS micro field sensor measures the electric field around described tested wire, and described electric field is converted into corresponding being exported after the high-frequency alternating voltage signal of Electric Field Modulated to described Signal-regulated kinase, the high-frequency alternating voltage signal received is filtered and processing and amplifying by described Signal-regulated kinase, and the high-frequency voltage signal after processing is AD converted rear output digit signals to microprocessor, described microprocessor is measured electric field value accordingly after the digital signal received is demodulated and is demarcated。
7. electroscopic device according to claim 6, it is characterised in that:
Described MEMS micro field sensor includes auxiliary circuit and electric field induction chip, and described auxiliary circuit for providing working power and offset signal to electric field measurement chip；Described electric field induction chip is used for measuring DC electric field intensity, and described DC electric field intensity is converted into the high-frequency alternating voltage signal of Electric Field Modulated。
8. electroscopic device according to claim 7, it is characterised in that:
Described auxiliary circuit and electric field induction chip are located between upper and lower metal polar plate, and described upper and lower metal polar plate is used for uniform electric field。
9. electroscopic device according to claim 1, it is characterised in that:
Described electrical verification result output module includes electrical verification indicating module, LED display lamp and speaker, described electrical verification indicating module connects described microprocessor, described LED display lamp and described speaker respectively, for receiving the low and high level switching signal of described microprocessor output, and control described LED display lamp and described speaker according to described low and high level switching signal；When described microprocessor judges wire to be measured is charged, output high level is to described electrical verification indicating module, and it is bright that described electrical verification indicating module controls described LED display lamp, and controls described speaker and send audible alarm。
10. electroscopic device according to claim 9, it is characterized in that: described electrical verification result output module also includes antenna, described antenna is connected with described electrical verification indicating module, for information whether charged for tested conduction being sent in the handheld device of Ground Operation personnel by wireless transmission method。
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| CN106597065A (en) * | 2016-12-10 | 2017-04-26 | 国网浙江省电力公司金华供电公司 | MEMS non-contact high-voltage direct current electroscope |
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