CN101718817A - Device and method for measuring voltage phase of high-voltage line in field intensity type non-contact way - Google Patents

Device and method for measuring voltage phase of high-voltage line in field intensity type non-contact way Download PDF

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Publication number
CN101718817A
CN101718817A CN200910232678A CN200910232678A CN101718817A CN 101718817 A CN101718817 A CN 101718817A CN 200910232678 A CN200910232678 A CN 200910232678A CN 200910232678 A CN200910232678 A CN 200910232678A CN 101718817 A CN101718817 A CN 101718817A
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China
Prior art keywords
circuit
voltage
phase
dispensing device
signal
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Pending
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CN200910232678A
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Chinese (zh)
Inventor
张金波
高杨
宋佳佳
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Hohai University Changzhou Campus
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Hohai University Changzhou Campus
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Priority to CN200910232678A priority Critical patent/CN101718817A/en
Publication of CN101718817A publication Critical patent/CN101718817A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a device and a method for measuring a voltage phase of a high-voltage line in a field-intensity type non-contact way. Two transmitting devices contact with or approach to two high-voltage lines to be measured; a voltage signal output end of a transmitting antenna is connected with an amplitude limiter circuit; the output end of the amplitude limiter circuit is connected with a filter circuit; a voltage phase signal output end of the filter circuit is respectively connected with voltage phase signal output ends of a phase modulation circuit and an integrating circuit; a voltage phase modulation signal output end of the phase modulation circuit is connected with a voltage phase modulation signal input end of the transmitting antenna; the frequencies of modulation circuits of two transmitting devices are different; a receiving device is arranged for a certain distance away from the two transmitting devices and receives voltage phase signals from the two transmitting devices by a wireless mode; and a voltage phase difference value can be obtained by the calculation of a microprocessor. The invention doe not need to be connected in a wired way and can ensure that operators are isolated from a high-voltage line by a considerably-long distance, thereby greatly improving the safety factor for detection and effectively protecting personal safety of operators.

Description

The device and method of measuring voltage phase of high-voltage line in field intensity type non-contact way
Technical field
The present invention relates to a kind of device and method that can measure the high-tension line voltage-phase.
Background technology
Electric system is before electrical network is incorporated into the power networks combined floodgate, New Development electric station grid connection and the operation of new transformer station, and after project of transmitting and converting electricity enlarging, transformation or the main equipment overhaul, the nuclear phase test will be done in the completion scene of putting into operation, comprise and check phase sequence and check phase place, promptly need to measure the phase differential of the corresponding two-phase of two electrical networks that are incorporated into the power networks, cause short circuit because phase sequence or phase place are incorrect, electrical network is constituted impact to prevent, bring unnecessary trouble to the user, cause device damage etc.The phase place strictness of being incorporated into the power networks between the voltage that requires two electrical networks when closing a floodgate is identical, therefore, at this moment just needs to measure more exactly the voltage phase difference between the corresponding phase of two electrical networks.
The wired mode of the many employings of at present domestic phase-detection for high-voltage electric power circuit in order to measure the phase differential of two circuits, uses the long line while of dragging to contact with the measured point usually, realizes the detection of phase place by corresponding comparator circuit.The nuclear phase evidence puts into operation at the scene: the method for utilizing the direct nuclear phase of overhead transmission line itself is effectively reliably, is absorbed in passive situation the same day of can avoiding putting into operation because of nuclear phase is inconsistent.The equipment that adopts the method for the direct nuclear phase of single-phase potential transformer to use mainly contains: two of insulation rods, two pairs of insulated shoes, test lead are an amount of, one of voltage table, but the problem that this method exists is: for high-tension line, when especially high-tension overhead line being carried out phase-detection, require two measurement mechanisms to contact with two leads simultaneously, adopt wired mode to drag line very long, use very inconveniently, the more important thing is that high pressure has certain danger.Under certain high pressure effect,, can constitute serious injury to human body, equipment etc. if run into suitable weather (as air humidity, temperature etc.) just can produce electric arc.
Summary of the invention
The objective of the invention is defective, a kind of light easy-to-use, apparatus and method of detecting the strong formula non-cpntact measurement high-tension line voltage-phase of safety are provided at above-mentioned prior art.
The technical scheme that apparatus of the present invention adopt is: two dispensing devices contact with two hi-lines to be measured or are approaching, receive the voltage signal of high pressure phase line when the transmitting antenna of dispensing device is to use and send the antenna of the high-frequency signal of the voltage signal that is loaded with the high pressure phase line with the form of wireless transmission, the voltage signal output end of transmitting antenna connects the voltage signal input end of amplitude limiter circuit, limit circuit output end connects the input end of filtering circuit, the voltage phase signal output terminal of filtering circuit connects the voltage phase signal input end of phase-modulation circuit and integrating circuit respectively, the voltage-phase modulation signal output terminal of phase-modulation circuit receives and sends the voltage-phase modulation signal input end of antenna, the voltage signal of the output terminal of integrating circuit connects the relatively end of voltage comparator circuit, the input control end of the output termination on-off circuit of voltage comparator circuit, the power input of the output termination on-off circuit of power circuit, the control end output of on-off circuit connects the control end of acousto-optic indicating circuit, the power output end of on-off circuit connects the power end of modulation circuit, the signal input part of the frequency signal output termination modulation circuit of frequency generating circuit; The frequency difference of the modulation circuit of two dispensing devices.
The technical scheme that the inventive method adopts is: earlier two dispensing devices are hung on the two high pressure phase lines with two insulating bars respectively, contact with this high pressure phase line or vertical with this high pressure phase line but directly do not contact by two transmitting antennas by two transmitting antennas are direct; Receiving trap is placed with a certain distance from two dispensing devices, receiving trap calculates by microprocessor at last and obtains the voltage-phase difference by the voltage phase signal of wireless mode reception from two dispensing devices again.
The invention has the beneficial effects as follows: need not wired connection; wireless mode is adopted in the transmission of phase information; can make operating personnel and hi-line itself isolate a quite long segment distance, improve the safety coefficient of phase-detection greatly, protect operating personnel's personal safety effectively.
Description of drawings
Fig. 1 is an on-the-spot test scheme of installation of the present invention.
Fig. 2 is a schematic diagram of the present invention.
Embodiment
As shown in Figure 1, measure high-tension line not during the voltage-phase between the homophase, use insulating bar 3 and insulating bar 4 respectively dispensing device 1 and dispensing device 2 to be contacted with A, the B of two hi-lines to be measured or approaching, dispensing device 1 and dispensing device 2 receive the voltage signal of two high pressure phase line A, B respectively, and the form with wireless transmission sends the high-frequency signal that is loaded with this voltage signal then; Receiving trap 5 receives the high-frequency signal that this two-way is loaded with the voltage signal of corresponding phase line by wireless mode, and by after the demodulation, handles accordingly, at last phase difference value outwards is shown to the user.
As Fig. 2, dispensing device 1 has transmitting antenna 6, amplitude limiter circuit 7, filtering circuit 8, integrating circuit 9, acousto-optic indicating circuit 10, modulation circuit 11, on-off circuit 12, power circuit 13 and frequency generating circuit 14.Receive the voltage signal of high pressure phase line when transmitting antenna 6 is to use and send the antenna of the high-frequency signal of the voltage signal that is loaded with the high pressure phase line with the form of wireless transmission.The voltage signal output end of transmitting antenna 6 connects the voltage signal input end of amplitude limiter circuit 7, the input end of the output termination filtering circuit 8 of amplitude limiter circuit 7.The effect of amplitude limiter circuit 7 and filtering circuit 8 is: during use, the capacity effect between transmitting antenna 6 and the hi-line is obtained voltage signal, carries out amplitude limit, the voltage square wave signal behind the amplitude limit is carried out the voltage signal that filtering obtains the high pressure phase line with the differential concatenation stabilivolt again by the field coupled mode.
The voltage phase signal output terminal of filtering circuit 8 connects the voltage phase signal input end of phase-modulation circuit 11 and integrating circuit 9 respectively, when phase-modulation circuit 11 is to use the voltage phase signal of the high pressure phase line of amplitude limiter circuit 7 and filtering circuit 8 outputs is carried out the circuit of high frequency modulated, the voltage-phase modulation signal output terminal of phase-modulation circuit 11 receives and sends the voltage-phase modulation signal input end of antenna 6.The voltage signal of the output terminal of integrating circuit 9 connects the relatively end of voltage comparator circuit 15, the input control end of the output termination on-off circuit 12 of voltage comparator circuit 15.The power input of the output termination on-off circuit 12 of power circuit 13, the control end output of on-off circuit 12 connects the control end of acousto-optic indicating circuit 10, the power output end of on-off circuit 12 connects the power end of modulation circuit 11, and on-off circuit 12 is controlled the electric and dead electricity that gets of modulation circuit 11 and acousto-optic indicating circuit 10 simultaneously; The signal input part of the frequency signal output termination modulation circuit 11 of frequency generating circuit 14.
In like manner, as Fig. 2, dispensing device 2 has the structure identical with dispensing device 1, specifically be to have transmitting antenna 6-1, amplitude limiter circuit 7-1, filtering circuit 8-1, integrating circuit 9-1, acousto-optic indicating circuit 10-1, modulation circuit 11-1, on-off circuit 12-1, power circuit 13-1, frequency generating circuit 14-1 and voltage comparator circuit 15-1, circuit corresponding in the connected mode of above-mentioned each circuit and effect and the dispensing device 1 is identical, and unique difference is that modulation circuit 11 is different with the frequency of modulation circuit 11-1.
Receiving trap 5 has receiving antenna 16, receiving antenna 17, receiver module 18, receiver module 19, microprocessor 20, display circuit 21, keyboard circuit 22 and power circuit 23.Microprocessor 20 is external receiver module 18, receiver module 19, display circuit 21, keyboard circuit 22 and power circuit 2 respectively.Wherein, reception is from the input end of the output termination receiver module 18 of the receiving antenna 16 of the voltage phase signal of dispensing device 1, and receiver module 18 contains the tested voltage after the demodulation in the I/O mouth of the square-wave signal of phase information by output termination microprocessor 20; Reception is from the input end of the output termination receiver module 19 of the receiving antenna 17 of the voltage phase signal of dispensing device 2, and receiver module 19 contains the tested voltage after the demodulation in the I/O mouth of the square-wave signal of phase information by output termination microprocessor 20; Power circuit 23 is received the power end of microprocessor 20, for it provides power supply; The I/O mouth of keyboard circuit 22 and microprocessor 20; Display circuit 21 is connected with the I/O mouth of microprocessor 20, is used to show the phase difference measurement value.
In order to measure two phase differential between the high pressure phase line, utilize insulating bar 3 and insulating bar 4 to be hung on the two high pressure phase lines dispensing device 1 and dispensing device 2, by its transmitting antenna 6 and transmitting antenna 6-1 directly contact with this high pressure phase line or transmitting antenna 6 vertical with transmitting antenna 6-1 but directly do not contact with this high pressure phase line; Receiving trap 5 is placed with a certain distance from dispensing device 1 and dispensing device 1, and receiving trap 5 just can obtain phase difference value by the voltage phase signal that wireless mode receives from dispensing device 1 and dispensing device 2 by calculating.

Claims (3)

1. the device of a measuring voltage phase of high-voltage line in field intensity type non-contact way, comprise receiving trap and dispensing device, it is characterized in that: dispensing device (1) and dispensing device (2) contact with two hi-lines to be measured or are approaching, the transmitting antenna (6) of dispensing device (1) receives the voltage signal of high pressure phase line and sends the antenna of the high-frequency signal of the voltage signal that is loaded with the high pressure phase line with the form of wireless transmission when being to use, the voltage signal output end of transmitting antenna (6) connects the voltage signal input end of amplitude limiter circuit (7), the input end of the output termination filtering circuit (8) of amplitude limiter circuit (7), the voltage phase signal output terminal of filtering circuit (8) connects the voltage phase signal input end of phase-modulation circuit (11) and integrating circuit (9) respectively, the voltage-phase modulation signal output terminal of phase-modulation circuit (11) receives and sends the voltage-phase modulation signal input end of antenna (6), the voltage signal of the output terminal of integrating circuit (9) connects the relatively end of voltage comparator circuit 15, the input control end of the output termination on-off circuit (12) of voltage comparator circuit (15), the power input of the output termination on-off circuit (12) of power circuit (13), the control end output of on-off circuit (12) connects the control end of acousto-optic indicating circuit (10), the power output end of on-off circuit (12) connects the power end of modulation circuit (11), the signal input part of the frequency signal output termination modulation circuit (11) of frequency generating circuit (14); Described dispensing device (2) has transmitting antenna (6-1), amplitude limiter circuit (7-1), filtering circuit (8-1), integrating circuit (9-1), acousto-optic indicating circuit (10-1), modulation circuit (11-1), on-off circuit (12-1), power circuit (13-1), frequency generating circuit (14-1) and voltage comparator circuit (15-1), above-mentioned each circuit structure is identical with the middle corresponding circuit of connected mode and dispensing device (1), and modulation circuit (11) is different with the frequency of modulation circuit (11-1).
2. the device of measuring voltage phase of high-voltage line in field intensity type non-contact way according to claim 1, it is characterized in that: described receiving trap (5) has reception from the receiving antenna 16 of the voltage phase signal of dispensing device (1) with receive from the receiving antenna (17) of the voltage phase signal of dispensing device (2), the output terminal of receiving antenna (16,17) and connect the input end of receiver module (18,19) respectively, and receiver module (18,19) connects microprocessor (20) respectively; Display circuit (21), keyboard circuit (22), power circuit (23) connect microprocessor (20) respectively.
3. the method for a measuring voltage phase of high-voltage line in field intensity type non-contact way, it is characterized in that: earlier use insulating bar (3,4) to be hung on the two high pressure phase lines respectively dispensing device (1) and dispensing device (2), contact with this high pressure phase line or vertical with transmitting antenna (6-1) but directly do not contact with this high pressure phase line by transmitting antenna (6) by transmitting antenna (6) and transmitting antenna (6-1) are direct; Receiving trap (5) is placed with a certain distance from dispensing device (1,2), receiving trap (5) calculates by microprocessor (20) at last and obtains the voltage-phase difference by the voltage phase signal of wireless mode reception from dispensing device (1,2) again.
CN200910232678A 2009-12-04 2009-12-04 Device and method for measuring voltage phase of high-voltage line in field intensity type non-contact way Pending CN101718817A (en)

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Application Number Priority Date Filing Date Title
CN200910232678A CN101718817A (en) 2009-12-04 2009-12-04 Device and method for measuring voltage phase of high-voltage line in field intensity type non-contact way

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Application Number Priority Date Filing Date Title
CN200910232678A CN101718817A (en) 2009-12-04 2009-12-04 Device and method for measuring voltage phase of high-voltage line in field intensity type non-contact way

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102419397A (en) * 2011-08-15 2012-04-18 中国科学院遥感应用研究所 Phase difference measuring device and method
CN104133109A (en) * 2014-08-20 2014-11-05 河海大学常州校区 Novel electric quantity metering device of electric power circuit
CN105425054A (en) * 2015-12-24 2016-03-23 国网重庆市电力公司电力科学研究院 Noncontact potential measurement method and device
CN106053941A (en) * 2016-06-20 2016-10-26 上海路辉电子科技有限公司 Phase detection method and devices
CN106202410A (en) * 2016-07-12 2016-12-07 成都优谱德信息技术有限公司 A kind of Intelligent-counting System and method for controlled based on mobile terminal
CN106249024A (en) * 2016-07-01 2016-12-21 重庆大学 Transmission line of electricity voltage measurement method based on D dot electric-field sensor
CN106918743A (en) * 2017-04-12 2017-07-04 国网四川省电力公司电力科学研究院 The working voltage phase localization method of the middle single-phase cable termination of pressure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102419397A (en) * 2011-08-15 2012-04-18 中国科学院遥感应用研究所 Phase difference measuring device and method
CN104133109A (en) * 2014-08-20 2014-11-05 河海大学常州校区 Novel electric quantity metering device of electric power circuit
CN105425054A (en) * 2015-12-24 2016-03-23 国网重庆市电力公司电力科学研究院 Noncontact potential measurement method and device
CN106053941A (en) * 2016-06-20 2016-10-26 上海路辉电子科技有限公司 Phase detection method and devices
CN106053941B (en) * 2016-06-20 2018-01-19 上海路辉电子科技有限公司 A kind of method for detecting phases and device
CN106249024A (en) * 2016-07-01 2016-12-21 重庆大学 Transmission line of electricity voltage measurement method based on D dot electric-field sensor
CN106202410A (en) * 2016-07-12 2016-12-07 成都优谱德信息技术有限公司 A kind of Intelligent-counting System and method for controlled based on mobile terminal
CN106918743A (en) * 2017-04-12 2017-07-04 国网四川省电力公司电力科学研究院 The working voltage phase localization method of the middle single-phase cable termination of pressure

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Open date: 20100602