CN105301328A - Usage method of self-check electronic voltage transformer - Google Patents
Usage method of self-check electronic voltage transformer Download PDFInfo
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- CN105301328A CN105301328A CN201510782588.5A CN201510782588A CN105301328A CN 105301328 A CN105301328 A CN 105301328A CN 201510782588 A CN201510782588 A CN 201510782588A CN 105301328 A CN105301328 A CN 105301328A
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Abstract
The invention relates to a self-check electronic voltage transformer. The self-check electronic voltage transformer comprises an electronic voltage transformer main body, an X ray machine and an ARM11 processor. The X ray machine is used for shooting a housing of the electronic voltage transformer main body, obtaining corresponding X ray digital images, and determining the internal parts, having defects, of the housing of the electronic voltage transformer main body based on analysis of the X ray digital images. The ARM11 processor receives the information of the positions having the defects and sends the information of the positions to a display device for displaying. According to the invention, the structure of the electronic voltage transformer is optimized, and the intelligent self-checking of the electronic voltage transformer is also realized.
Description
Technical field
The present invention relates to power domain, particularly relate to a kind of using method of self-check type electronic type voltage transformer.
Background technology
Electronic mutual inductor, AC sampling is carried out by the voltage to input, current signal, again sampled value is inputted secondary instrument by the transmission system such as cable, optical fiber and digital quantity to be connected, digital quantity input secondary instrument carries out computing to the sampled value of voltage, electric current, can obtain the parameters such as voltage effective value, current effective value, fundamental voltage, fundamental current, harmonic voltage, harmonic current, active power, fundamental power, harmonic power.
But electronic type voltage transformer of the prior art exists unreasonable structure, cost performance is not high, cannot be commonly used, and, also cannot realize secondary device and the inherent vice of remote equipment and the self-inspection of External Defect.
Therefore, the present invention proposes a kind of self-check type electronic type voltage transformer, optimize electronic type voltage transformer of the prior art, improve the cost performance of electronic type voltage transformer, more crucially, be integrated with the inherent vice of secondary device and remote equipment and the checkout equipment of External Defect, improve the detection efficiency of fault.
Summary of the invention
In order to solve the technical matters that prior art exists, the invention provides a kind of self-check type electronic type voltage transformer, first, de-redundancy is carried out to the structure of electronic type voltage transformer of the prior art, while products quality guarantee, the structure of simplified apparatus; Secondly, integrated ultraviolet imager and X-ray production apparatus realize the inherent vice self-inspection to remote equipment, and integrated various image processing equipment realizes the External Defect self-inspection to remote equipment.
According to an aspect of the present invention, provide a kind of self-check type electronic type voltage transformer, described voltage transformer (VT) comprises electronic type voltage transformer main body, X-ray production apparatus and ARM11 processor, described X-ray production apparatus is used for taking to obtain corresponding X-ray digital image to the shell of described electronic type voltage transformer main body, and the position of the inside existing defects of the shell of described electronic type voltage transformer main body is determined based on the analysis of X-ray digital image, described ARM11 processor receives the position of described existing defects and is sent to display device to show.
More specifically, in described self-check type electronic type voltage transformer, comprising: ultraviolet imager, for detecting the discharge information of distal housing, to determine the paradoxical discharge position of distal housing; X-ray production apparatus, be arranged on the opposite of distal housing, be connected with described ultraviolet imager, for when receiving the paradoxical discharge position of distal housing, take to obtain corresponding X-ray digital image to the paradoxical discharge position of distal housing adaptively, and the X-ray digital image obtained is analyzed, to determine the position of the inner existing defects of distal housing; Electronic type voltage transformer main body, comprises on-the-spot shell, distal housing, high voltage bus, air core coil, ironcore choke, signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment, electro-optic conversion equipment, downlink optical fiber, primary power source, secondary power supply, uplink optical fibers, photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment; On-the-spot shell, for holding high voltage bus, air core coil, ironcore choke, signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment, electro-optic conversion equipment and primary power source; Distal housing, for holding secondary power supply, photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment; High-definition camera equipment, for taking the surface of distal housing, to obtain corresponding surface image; Gauss's denoising equipment, with described high-definition camera equipment connection, for carrying out Gauss's denoising to receiving surface image, to obtain denoising image; Smoothing processing equipment, with described Gauss's denoising equipment connection, for the smoothing process of denoising image received, to obtain smoothed image; Gray processing treatment facility, with described smoothing processing equipment connection, for carrying out gray processing process to the smoothed image received, to obtain gray level image; Column border checkout equipment, is connected with described gray processing treatment facility, for described gray level image, calculates the number of often row black picture element, and the row that the number of black picture element is more than or equal to threshold number of pixels are designated as edge columns; Row rim detection equipment, is connected with described gray processing treatment facility, for described gray level image, calculates the number of often row black picture element, and the row that the number of black picture element is more than or equal to threshold number of pixels is designated as edge lines; Skeleton splitting equipment, be connected respectively with described column border checkout equipment and described row rim detection equipment, region edge columns and edge lines interweaved is as distal housing skeleton domain of the existence, and from described gray level image, be partitioned into described distal housing skeleton domain of the existence to export as skeleton subimage, the background of skeleton subimage from gray level image to be separated; Defect analysis equipment, is connected with described skeleton splitting equipment, is mated by described skeleton subimage with various defect image feature, and the successful kind of output matching is as skeleton defect kind; SD storage card, is connected respectively with column border checkout equipment, row rim detection equipment and defect analysis equipment, for prestoring threshold number of pixels and various defect image feature; High voltage bus, through air core coil and ironcore choke; Air core coil, as the sensing head of protection channel; Ironcore choke, as the sensing head of Measurement channel; Signal conditioning circuit, the signal that receiving core coil exports, comprise filtering process electronic circuit, phase shift process electronic circuit and amplify process electronic circuit, carrying out filtering, phase shift and amplification process successively for the signal exported ironcore choke, and the signal after output processing; Analog to digital conversion circuit, is connected with signal conditioning circuit, and the signal for being exported by signal conditioning circuit carries out the analog to digital conversion of 8; Data receiver, is connected with analog to digital conversion circuit by SPI interface, combines and CRC check the data received; Data transmitting equipment, by SPI interface, the data after verification are sent to electro-optic conversion equipment, the data after described verification are parallel mode; Data after verification are transmitted by downlink optical fiber by electro-optic conversion equipment; Photoelectric conversion device, receives the data after described verification by uplink optical fibers; CPLD chip, realizes the data simultaneously received after the verification of multidiameter delay, and carries out parallel-serial conversion, with the data after the verification obtaining multi-path serial; ARM11 processor, realizes being connected with the bus interface of CPLD chip and mounting mobile communication equipment; Also by mobile communication equipment and X-ray production apparatus and defect analysis equipment connection to receive position and the skeleton defect kind of the inner existing defects of distal housing; Data after the verification of multi-path serial are sent to the measurement server place of far-end by mobile communication equipment; Primary power source, for signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment and electro-optic conversion equipment provide electric power supply; Secondary power supply, for photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment provide electric power supply; Liquid crystal display, is connected with ARM11 processor, for showing position and the skeleton defect kind of the inner existing defects of distal housing in real time, also for the data after the verification of real-time display multiway serial; Wherein, the data being sent to the measurement server place of far-end are proportional to the corresponding data after analog to digital conversion circuit analog to digital conversion.
More specifically, in described self-check type electronic type voltage transformer: X-ray production apparatus and defect analysis equipment are all embedded with mobile communication interface.
More specifically, in described self-check type electronic type voltage transformer: ultraviolet imager and X-ray production apparatus are integrated on one piece of surface-mounted integrated circuit.
More specifically, in described self-check type electronic type voltage transformer: ultraviolet imager is arranged on the opposite of distal housing.
More specifically, in described self-check type electronic type voltage transformer: high-definition camera equipment is arranged on the opposite of distal housing.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the block diagram of self-check type electronic type voltage transformer of the present invention.
Reference numeral: 1 electronic type voltage transformer main body; 2X X-ray machine X; 3ARM11 processor
Embodiment
Below with reference to accompanying drawings the embodiment of self-check type electronic type voltage transformer of the present invention is described in detail.
Along with developing rapidly of photoelectron technology, many scientific and technological developed countries turn to sight the electronic current mutual inductor utilizing optical sensing technology and electronics method to carry out Development of Novel, are called for short photoelectric current inductor.The standard of International Power association distributing electronic formula voltage transformer (VT).The implication of electronic mutual inductor, except comprising the mutual inductor of photo-electric, also comprises other various voltage, current sensor utilizing Electronic Testing principle.
But, the structural redundancy of electronic type voltage transformer of the prior art is high, involve great expense, use cost performance the power supply management department of voltage transformer (VT) too high in enormous quantities, simultaneously, electronic type voltage transformer of the prior art lacks the on-site parameters checkout equipment of some necessity, causes field data to transmit poor real, easily delays the processing time of field failure.
For this reason, the present invention proposes a kind of self-check type electronic type voltage transformer, first the structure of electronic type voltage transformer of the prior art is optimized, improve its cost performance, add the realization of ultraviolet imager, X-ray production apparatus and various high-precision image processing equipment in addition to self-inspection while the inherent vice of remote equipment and External Defect.
Fig. 1 is the block diagram of self-check type electronic type voltage transformer of the present invention, described voltage transformer (VT) comprises electronic type voltage transformer main body, X-ray production apparatus and ARM11 processor, described X-ray production apparatus is used for taking to obtain corresponding X-ray digital image to the shell of described electronic type voltage transformer main body, and the position of the inside existing defects of the shell of described electronic type voltage transformer main body is determined based on the analysis of X-ray digital image, described ARM11 processor receives the position of described existing defects and is sent to display device to show.
Then, the structure of self-check type electronic type voltage transformer of the present invention is specifically described.
Described voltage transformer (VT) comprises: ultraviolet imager, for detecting the discharge information of distal housing, to determine the paradoxical discharge position of distal housing.
Described voltage transformer (VT) comprises: X-ray production apparatus, be arranged on the opposite of distal housing, be connected with described ultraviolet imager, for when receiving the paradoxical discharge position of distal housing, take to obtain corresponding X-ray digital image to the paradoxical discharge position of distal housing adaptively, and the X-ray digital image obtained is analyzed, to determine the position of the inner existing defects of distal housing.
Described voltage transformer (VT) comprises: electronic type voltage transformer main body, comprises on-the-spot shell, distal housing, high voltage bus, air core coil, ironcore choke, signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment, electro-optic conversion equipment, downlink optical fiber, primary power source, secondary power supply, uplink optical fibers, photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment; On-the-spot shell, for holding high voltage bus, air core coil, ironcore choke, signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment, electro-optic conversion equipment and primary power source; Distal housing, for holding secondary power supply, photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment.
Described voltage transformer (VT) comprises: high-definition camera equipment, for taking the surface of distal housing, to obtain corresponding surface image.
Described voltage transformer (VT) comprises: Gauss's denoising equipment, with described high-definition camera equipment connection, for carrying out Gauss's denoising to receiving surface image, to obtain denoising image; Smoothing processing equipment, with described Gauss's denoising equipment connection, for the smoothing process of denoising image received, to obtain smoothed image; Gray processing treatment facility, with described smoothing processing equipment connection, for carrying out gray processing process to the smoothed image received, to obtain gray level image.
Described voltage transformer (VT) comprises: column border checkout equipment, is connected with described gray processing treatment facility, for described gray level image, calculates the number of often row black picture element, and the row that the number of black picture element is more than or equal to threshold number of pixels are designated as edge columns; Row rim detection equipment, is connected with described gray processing treatment facility, for described gray level image, calculates the number of often row black picture element, and the row that the number of black picture element is more than or equal to threshold number of pixels is designated as edge lines.
Described voltage transformer (VT) comprises: skeleton splitting equipment, be connected respectively with described column border checkout equipment and described row rim detection equipment, region edge columns and edge lines interweaved is as distal housing skeleton domain of the existence, and from described gray level image, be partitioned into described distal housing skeleton domain of the existence to export as skeleton subimage, the background of skeleton subimage from gray level image to be separated.
Described voltage transformer (VT) comprises: defect analysis equipment, is connected with described skeleton splitting equipment, is mated by described skeleton subimage with various defect image feature, and the successful kind of output matching is as skeleton defect kind.
Described voltage transformer (VT) comprises: SD storage card, is connected respectively with column border checkout equipment, row rim detection equipment and defect analysis equipment, for prestoring threshold number of pixels and various defect image feature.
Described voltage transformer (VT) comprises: high voltage bus, through air core coil and ironcore choke; Air core coil, as the sensing head of protection channel; Ironcore choke, as the sensing head of Measurement channel; Signal conditioning circuit, the signal that receiving core coil exports, comprise filtering process electronic circuit, phase shift process electronic circuit and amplify process electronic circuit, carrying out filtering, phase shift and amplification process successively for the signal exported ironcore choke, and the signal after output processing; Analog to digital conversion circuit, is connected with signal conditioning circuit, and the signal for being exported by signal conditioning circuit carries out the analog to digital conversion of 8.
Described voltage transformer (VT) comprises: data receiver, is connected with analog to digital conversion circuit by SPI interface, combines and CRC check the data received; Data transmitting equipment, by SPI interface, the data after verification are sent to electro-optic conversion equipment, the data after described verification are parallel mode; Data after verification are transmitted by downlink optical fiber by electro-optic conversion equipment; Photoelectric conversion device, receives the data after described verification by uplink optical fibers.
Described voltage transformer (VT) comprises: CPLD chip, realizes the data simultaneously received after the verification of multidiameter delay, and carries out parallel-serial conversion, with the data after the verification obtaining multi-path serial.
Described voltage transformer (VT) comprises: ARM11 processor, realizes being connected with the bus interface of CPLD chip and mounting mobile communication equipment; Also by mobile communication equipment and X-ray production apparatus and defect analysis equipment connection to receive position and the skeleton defect kind of the inner existing defects of distal housing.
Described voltage transformer (VT) comprises: mobile communication equipment, the data after the verification of multi-path serial is sent to the measurement server place of far-end; Primary power source, for signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment and electro-optic conversion equipment provide electric power supply; Secondary power supply, for photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment provide electric power supply.
Described voltage transformer (VT) comprises: liquid crystal display, is connected with ARM11 processor, for showing position and the skeleton defect kind of the inner existing defects of distal housing in real time, also for the data after the verification of real-time display multiway serial.
Wherein, the data being sent to the measurement server place of far-end are proportional to the corresponding data after analog to digital conversion circuit analog to digital conversion.
Alternatively, in described voltage transformer (VT): X-ray production apparatus and defect analysis equipment are all embedded with mobile communication interface; Ultraviolet imager and X-ray production apparatus are integrated on one piece of surface-mounted integrated circuit; Ultraviolet imager is arranged on the opposite of distal housing; And high-definition camera equipment can be arranged on the opposite of distal housing.
In addition, current transformer, it utilizes the proportional feature of transformer primary, secondary current to make.Its principle of work, equivalent circuit are also identical with general transformer, and just its former limit windings in series is in circuit-under-test, and the number of turn is little; Vice-side winding connects the low-impedance load such as reometer, relay current coil, near short circuit.Primary current (i.e. tested electric current) and secondary current depend on the load of test line, and have nothing to do with the secondary load of current transformer.Because secondary is close to short circuit, so former and deputy polygonal voltage U1 and all very little, exciting current I0 is also very little.When current transformer runs, secondary does not allow open circuit.Because once open circuit, primary current all becomes exciting current, makes magnetic flux and secondary voltage substantially exceed normal value and jeopardize the person and device security.Therefore, mustn't fuse be connect in current transformer secondary loop, also not allow operationally just to pull down the equipment such as reometer, relay without bypass.The mode of connection of current transformer by its connect load service requirement determine.The most frequently used mode of connection is single-phase, three-phase star and incomplete star.
Adopt self-check type electronic type voltage transformer of the present invention, to cost dearly for electronic type voltage transformer in prior art and remote equipment lacks the technical matters of defect self-checking equipment, by the structure of modification to electronic type voltage transformer, simplify the inner structure of original electronic type voltage transformer, improve its cost performance; More crucially, the integrated Inner Defect Testing equipment to remote equipment and External Defect checkout equipment, thus the intelligent level improving electronic type voltage transformer.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (6)
1. a using method for self-check type electronic type voltage transformer, the method comprises:
1) a kind of self-check type electronic type voltage transformer is provided, described voltage transformer (VT) comprises electronic type voltage transformer main body, X-ray production apparatus and ARM11 processor, described X-ray production apparatus is used for taking to obtain corresponding X-ray digital image to the shell of described electronic type voltage transformer main body, and the position of the inside existing defects of the shell of described electronic type voltage transformer main body is determined based on the analysis of X-ray digital image, described ARM11 processor receives the position of described existing defects and is sent to display device to show;
2) described voltage transformer (VT) is used.
2. the method for claim 1, is characterized in that, described voltage transformer (VT) comprises:
Ultraviolet imager, for detecting the discharge information of distal housing, to determine the paradoxical discharge position of distal housing;
X-ray production apparatus, be arranged on the opposite of distal housing, be connected with described ultraviolet imager, for when receiving the paradoxical discharge position of distal housing, take to obtain corresponding X-ray digital image to the paradoxical discharge position of distal housing adaptively, and the X-ray digital image obtained is analyzed, to determine the position of the inner existing defects of distal housing;
Electronic type voltage transformer main body, comprises on-the-spot shell, distal housing, high voltage bus, air core coil, ironcore choke, signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment, electro-optic conversion equipment, downlink optical fiber, primary power source, secondary power supply, uplink optical fibers, photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment;
On-the-spot shell, for holding high voltage bus, air core coil, ironcore choke, signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment, electro-optic conversion equipment and primary power source;
Distal housing, for holding secondary power supply, photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment;
High-definition camera equipment, for taking the surface of distal housing, to obtain corresponding surface image;
Gauss's denoising equipment, with described high-definition camera equipment connection, for carrying out Gauss's denoising to receiving surface image, to obtain denoising image;
Smoothing processing equipment, with described Gauss's denoising equipment connection, for the smoothing process of denoising image received, to obtain smoothed image;
Gray processing treatment facility, with described smoothing processing equipment connection, for carrying out gray processing process to the smoothed image received, to obtain gray level image;
Column border checkout equipment, is connected with described gray processing treatment facility, for described gray level image, calculates the number of often row black picture element, and the row that the number of black picture element is more than or equal to threshold number of pixels are designated as edge columns;
Row rim detection equipment, is connected with described gray processing treatment facility, for described gray level image, calculates the number of often row black picture element, and the row that the number of black picture element is more than or equal to threshold number of pixels is designated as edge lines;
Skeleton splitting equipment, be connected respectively with described column border checkout equipment and described row rim detection equipment, region edge columns and edge lines interweaved is as distal housing skeleton domain of the existence, and from described gray level image, be partitioned into described distal housing skeleton domain of the existence to export as skeleton subimage, the background of skeleton subimage from gray level image to be separated;
Defect analysis equipment, is connected with described skeleton splitting equipment, is mated by described skeleton subimage with various defect image feature, and the successful kind of output matching is as skeleton defect kind;
SD storage card, is connected respectively with column border checkout equipment, row rim detection equipment and defect analysis equipment, for prestoring threshold number of pixels and various defect image feature;
High voltage bus, through air core coil and ironcore choke;
Air core coil, as the sensing head of protection channel;
Ironcore choke, as the sensing head of Measurement channel;
Signal conditioning circuit, the signal that receiving core coil exports, comprise filtering process electronic circuit, phase shift process electronic circuit and amplify process electronic circuit, carrying out filtering, phase shift and amplification process successively for the signal exported ironcore choke, and the signal after output processing;
Analog to digital conversion circuit, is connected with signal conditioning circuit, and the signal for being exported by signal conditioning circuit carries out the analog to digital conversion of 8;
Data receiver, is connected with analog to digital conversion circuit by SPI interface, combines and CRC check the data received;
Data transmitting equipment, by SPI interface, the data after verification are sent to electro-optic conversion equipment, the data after described verification are parallel mode;
Data after verification are transmitted by downlink optical fiber by electro-optic conversion equipment;
Photoelectric conversion device, receives the data after described verification by uplink optical fibers;
CPLD chip, realizes the data simultaneously received after the verification of multidiameter delay, and carries out parallel-serial conversion, with the data after the verification obtaining multi-path serial;
ARM11 processor, realizes being connected with the bus interface of CPLD chip and mounting mobile communication equipment; Also by mobile communication equipment and X-ray production apparatus and defect analysis equipment connection to receive position and the skeleton defect kind of the inner existing defects of distal housing;
Data after the verification of multi-path serial are sent to the measurement server place of far-end by mobile communication equipment;
Primary power source, for signal conditioning circuit, analog to digital conversion circuit, data receiver, data transmitting equipment and electro-optic conversion equipment provide electric power supply;
Secondary power supply, for photoelectric conversion device, CPLD chip, ARM11 processor, liquid crystal display and mobile communication equipment provide electric power supply;
Liquid crystal display, is connected with ARM11 processor, for showing position and the skeleton defect kind of the inner existing defects of distal housing in real time, also for the data after the verification of real-time display multiway serial;
Wherein, the data being sent to the measurement server place of far-end are proportional to the corresponding data after analog to digital conversion circuit analog to digital conversion.
3. method as claimed in claim 2, is characterized in that:
X-ray production apparatus and defect analysis equipment are all embedded with mobile communication interface.
4. method as claimed in claim 2, is characterized in that:
Ultraviolet imager and X-ray production apparatus are integrated on one piece of surface-mounted integrated circuit.
5. method as claimed in claim 2, is characterized in that:
Ultraviolet imager is arranged on the opposite of distal housing.
6. method as claimed in claim 2, is characterized in that:
High-definition camera equipment is arranged on the opposite of distal housing.
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| CN108982552A (en) * | 2017-06-01 | 2018-12-11 | 群创光电股份有限公司 | Optical detection device and its operating method |
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| CN105242092A (en) * | 2015-11-16 | 2016-01-13 | 彭冬青 | Self-inspection electronic voltage transformer |
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