CN105068034B - A kind of current transformer detecting system and its detection method - Google Patents
A kind of current transformer detecting system and its detection method Download PDFInfo
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- 238000012360 testing method Methods 0.000 claims description 20
- 238000005070 sampling Methods 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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Abstract
A kind of current transformer detecting system and its detection method of the present invention, folder is embraced including the lifting device installed in power cabinet upper side and the U-shaped for being fixed on lifting device end, the side that the U-shaped embraces folder is equipped with radar range finding sensor, the power cabinet is internally provided with control device, radar range finding sensor is electrically connected with control device, the lifting device forms for multisection hydraulic bar, the control device includes host computer, slave computer, the High-current output module being connected with host computer and the hydraulic motion module being connected with slave computer, the High-current output module includes electronic pressure controller, high frequency filter and current lifting device.The present invention completes high-altitude wiring or off-line by one-touch control, substitute original overhead jointing clamp high current generator combination, current transformer once through-flow and point pole sex work and the operation in the form of work car can be completed, reduces intensity of workers, improves work efficiency.
Description
Technical field
The present invention relates to current detection technology field, and in particular to a kind of current transformer detecting system and its detection side
Method.
Background technology
Electrical installation project in power plant and substation's construction project is included once, the installation of secondary device, in whole station
A large amount of secondary AC loops need to pass through once the through-flow integrality for checking secondary current circuit in the case that wiring finishes.
At present, it is used to be once made of with flow detection device testing clamp hand handle and two part of extended telescopic rod, pass through high-altitude wiring
Pincers carry out connecing electric test to electrical equipment progress high-altitude, and when in use, first testing clamp hand handle is connected with telescopic rod by screw thread
Connect to tighten and be allowed to integrally change, every operation lever is connected according to the reminding method on bar；Operative employee is directly grasped on ground
Make, lift mounted high-altitude test clamp upper jaw and hook measured object, after be connected to high-current generation device CT surveyed
Examination.Had the following disadvantages using above device：First, high-altitude is easily swung, and easily touches adjacent spaces, while jaw poor reliability
Easily come off；Second, it is big to lift mounted high-altitude test clamp overall weight, higher to staff's force requirements.The
3rd, detection process is cumbersome, current transformer is detected inaccurate；
The content of the invention
, can be complete the technical problem to be solved in the present invention is to provide a kind of current transformer detecting system and its detection method
Into current transformer is once through-flow and point pole sex work and the operation in the form of work car, its detection process is simple and convenient, reduces
Intensity of workers, the accuracy for improving work efficiency and detecting.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of current transformer detecting system, including lifting device installed in power cabinet upper side and it is fixed on lifting dress
The U-shaped for putting end embraces folder, and the side that the U-shaped embraces folder is equipped with radar range finding sensor, and the power cabinet is internally provided with control
Device, the radar range finding sensor are electrically connected with control device, and the lifting device forms for multisection hydraulic bar, the control
Device includes host computer, slave computer, High-current output module and hydraulic motion module；The High-current output module includes electronics
Pressure regulator, high frequency filter and current lifting device, the input terminal of the electronic pressure controller are connected through air switch with AC power, its is defeated
Outlet is connected through high frequency filter with the input terminal of current lifting device, and the host computer passes through the first PWM modulation module and electronic pressure regulating
The input terminal of device is connected, and the output terminal of the current lifting device is connected through the first current sampling unit with host computer；The hydraulic motion
Module includes the second PWM modulation module, silicon controlled component, the second current sampling unit, force samples unit, radar range finding unit
And control unit；The input terminal of the second PWM modulation module is connected with slave computer, its output terminal is successively through Group of Silicon Controlled Rectifier, sky
Air cock is connected with AC power, and the output terminal of second current sampling unit is connected with slave computer, its input terminal and hydraulic pressure
Pump is connected, and the output terminal of described control unit is connected through force samples unit with slave computer, and the output terminal of control unit is through more piece
Hydraulic stem interface is connected with auxiliary element, and the output terminal of the radar range finding unit is connected with host computer, the Group of Silicon Controlled Rectifier
Output terminal is connected with the input terminal of hydraulic pump；The radar range finding unit, for measure embrace folder apart from current transformer lead it
Between distance, and the data after processing are sent into host computer and slave computer.
Further, the control device further include the display module being connected with host computer, wireless module, multi input end,
Point-polarity control unit and armful folder control unit.
Further, the point-polarity control unit includes triode K1 and K2, the collector of the triode K1 and K2
It is connected with power supply, its base stage is connected by resistance R2, resistance R5 with the output terminal of host computer respectively, the hair of triode K1 and K2
Emitter-base bandgap grading is grounded through resistance R3, resistance R6 respectively, and the base stage of three collector K1 is connected through resistance R1 with its collector, the base of triode K2
Pole is connected through resistance R4 with its collector, and the both ends of the resistance R3 and R4 are parallel with capacitance C1 and capacitance C2 respectively, and described three
Pole pipe K1 is connected with the emitter of K2 and draws wiring passes through buzzer as test terminals one, the ground terminal of the resistance R3
HA is connected with the ground terminal of resistance R6 and the node between resistance R3 and buzzer HA draws wiring as test terminals two.
A kind of detection method of current transformer detecting system, includes the following steps：
（1）Host computer and slave computer read radar range finding cell data information, and are shown by display screen；
（2）Slave computer gathers hydraulic pump current information, and calculates the multisection hydraulic bar rate of climb and time, passes through PWM tune
The control Group of Silicon Controlled Rectifier Converting Unit conducting of molding block and shut-off, while frequency control is carried out to hydraulic pump, complete multisection hydraulic bar
The closed-loop control of rising, until multisection hydraulic bar reaches current transformer wire locations；
（3）Multi input end input top embraces folder and picks up signal to host computer, is picked up by PC control armful folder completion dynamic
Make；
（4）Whether the test wiring that current transformer is detected by point-polarity control unit contacts well, if contact is good
Prompt tone is sent, and is shown by display module；
（5）Wireless module receives the control signal of point-polarity control unit, and the control signal is uploaded to host computer, together
When point-polarity control unit output short-time pulse voltage is linked into current transformer primary side and produces short-time pulse electric current,
Current Transformer Secondary side cut cable determines current transformer polarity by universal meter pointer offset direction；
（6）Test terminals one are connected by embracing folder with the side of current transformer, test terminals two-way earthing switch blade,
Switch is connected with the opposite side of current transformer, and host computer reads the number of the first current sampling unit and first voltage sampling unit
Be worth and carry out analysis meter calculation, at the same observe secondary device up-sampling information, determine whole system electric current secondary loop whether wiring
Correctly, whether current transformer ratio is correct.
The beneficial effects of the invention are as follows：The present invention completes high-altitude wiring or off-line by one-touch control, substitutes original high
Empty jointing clamp strong current generator, can complete once through-flow current transformer and point pole sex work and be made in the form of work car
Industry, reduces intensity of workers, improves work efficiency.
Brief description of the drawings
Fig. 1 is the device of the invention figure；
Fig. 2 is the system block diagram of the present invention；
Fig. 3 is the circuit diagram of point-polarity control unit of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of current transformer detecting system, including the lifting device 32 installed in 33 upper side of power cabinet
And the U-shaped armful folder 31 of lifting device end is fixed on, the side which embraces folder 31 is equipped with radar range finding sensor 34, power cabinet
33 are internally provided with control device, which is electrically connected by cable with control device, the lifting dress
32 are put to form for multisection hydraulic bar.When in use, power cabinet 2 is shifted onto to the lower section of tested current transformer, p-wire is passed through
Switch is connected with the primary side of current transformer, embraces the secondary side that folder 31 is connected to current transformer, that is, completes equipment before test
Installation.
As shown in Fig. 2, control device includes host computer 1, slave computer 2, High-current output module and hydraulic motion module, should
Host computer 1 and slave computer 2 are MCU microcontrollers；The High-current output module includes electronic pressure controller 4, high frequency filter 5
With current lifting device 6, the input terminal of the electronic pressure controller 4 is connected through air switch 3 with AC power, its output terminal is through high frequency filter
5 are connected with the input terminal of current lifting device 6, and the host computer 1 passes through the first PWM modulation module 9 and the input terminal phase of electronic pressure controller 4
Even, the output terminal of the current lifting device 6 is connected through the first current sampling unit 7 with host computer 1；The hydraulic motion module includes the
Two PWM modulation modules 10, silicon controlled component 11, the second current sampling unit 15, force samples unit 23, radar range finding unit 18
And control unit 17；The input terminal of the second PWM modulation module 10 is connected with slave computer 2, its output terminal is successively through silicon-controlled
Component 11, air switch 12 are connected with AC power, and the output terminal of second current sampling unit 15 is connected with slave computer 2,
Its input terminal is connected with hydraulic pump 14, and the output terminal of described control unit 17 is connected through force samples unit 23 with slave computer 2, control
The output terminal of unit 17 processed is connected through multisection hydraulic bar interface with auxiliary element 13, the output terminal of the radar range finding unit 18 with
Host computer 1 is connected, and the output terminal of the silicon controlled component 11 is connected with the input terminal of hydraulic pump 14；The radar range finding unit
18, folder 31 is embraced apart from the distance between current transformer lead for measuring U-shaped, and the data after processing are sent into host computer 1
In slave computer 2.
As shown in Figures 2 and 3, control device further includes the display module 24 being connected with host computer, wireless module 21, how defeated
Enter end 22, point-polarity control unit 20 and embrace folder control unit 19.The point-polarity control unit 20 includes triode K1 and K2, and three
The collector of pole pipe K1 is connected with power supply, its base stage is connected by resistance R2 with the output terminal of host computer 1, the hair of triode K1
Emitter-base bandgap grading is grounded through resistance R3, and the base stage of three collector K1 is connected through resistance R1 with its collector；The collector of triode K2 with electricity
Source is connected, its base stage is connected by resistance R5 with the output terminal of host computer 1, and the emitter of triode K2 is grounded through resistance R6, and three
The base stage of collector K2 is connected through resistance R4 with its collector, and the both ends of resistance R3 and R4 are parallel with capacitance C1 and capacitance C2 respectively；Three
Pole pipe K1 is connected with the emitter of K2 and draws wiring as the test terminals one for measurement current transform er, the resistance
The ground terminal of R3 is connected by buzzer HA with the ground terminal of resistance R6 and the node between resistance R3 and buzzer HA is drawn and connect
Line is as test terminals two.
A kind of detection method of current transformer detecting system, includes the following steps：
S1：Host computer 1 and slave computer 2 read the data message of radar range finding unit 18, and are shown by display screen；
S2：Slave computer 2 gathers the current information of hydraulic pump 14, and calculates the multisection hydraulic bar rate of climb and time, passes through
PWM modulation module 10 controls the conducting of Group of Silicon Controlled Rectifier Converting Unit and shut-off, carries out frequency control to hydraulic pump 14, completes more piece liquid
The closed-loop control that compression bar rises, until multisection hydraulic bar reaches current transformer wire locations；
S3：Multi input end 22 inputs top armful folder 31 and picks up signal to host computer 1, and it is complete to embrace folder 31 by the control of host computer 1
Acted into picking up；
S4：Whether the test wiring that current transformer is detected by point-polarity control unit 20 contacts well, if contact is good
Prompt tone is sent well, handling result is uploaded to host computer 1, and shown by display screen；
S5：Wireless module 21 receives the control signal of point-polarity control unit 20, and the control signal is uploaded to upper
Machine 1, while the output short-time pulse voltage of point-polarity control unit 20 is linked into current transformer primary side and is produced in short-term
Pulse current, current transformer polarity is determined in Current Transformer Secondary side cut cable by universal meter pointer offset direction；
S6：Test terminals one are connected by embracing folder 31 with the side of current transformer, test terminals two-way ground connection lock
Knife 4, switch are connected with the opposite side of current transformer, and host computer 1 reads the first current sampling unit 7 and first voltage sampling is single
The numerical value of member 8 simultaneously carries out analysis meter calculation, while observes secondary device up-sampling information, determines that whole system electric current secondary loop is
No wiring is correct, whether current transformer ratio is correct.
Those skilled in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as within the spirit of the present invention, above example is made
Appropriate change and variation all falls within the scope of protection of present invention.
Claims (4)
1. a kind of current transformer detecting system, including lifting device installed in power cabinet upper side and it is fixed on lifting device
The U-shaped of end embraces folder, and the side that the U-shaped embraces folder is equipped with radar range finding sensor, and the power cabinet is internally provided with control dress
Put, the radar range finding sensor is electrically connected with control device, and the lifting device forms for multisection hydraulic bar, its feature exists
In：The control device includes host computer, slave computer, High-current output module and hydraulic motion module；The High-current output
Module includes electronic pressure controller, high frequency filter and current lifting device, and the input terminal of the electronic pressure controller is through air switch with exchanging
Power supply is connected, its output terminal is connected through high frequency filter with the input terminal of current lifting device, and the host computer passes through the first PWM modulation mould
Block is connected with the input terminal of electronic pressure controller, and the output terminal of the current lifting device is connected through the first current sampling unit with host computer；
The hydraulic motion module include the second PWM modulation module, silicon controlled component, the second current sampling unit, force samples unit,
Radar range finding unit and control unit；The input terminal of the second PWM modulation module is connected with slave computer, its output terminal passes through successively
Group of Silicon Controlled Rectifier, air switch are connected with AC power, and the output terminal of second current sampling unit is connected with slave computer, its is defeated
Enter end with hydraulic pump to be connected, the output terminal of described control unit is connected through force samples unit with slave computer, control unit it is defeated
Outlet is connected through multisection hydraulic bar interface with auxiliary element, and the output terminal of the radar range finding unit is connected with host computer, described
The output terminal of Group of Silicon Controlled Rectifier is connected with the input terminal of hydraulic pump；The radar range finding unit, it is mutual apart from electric current for measuring armful folder
The distance between sensor lead, and the data after processing are sent into host computer and slave computer.
A kind of 2. current transformer detecting system according to claim 1, it is characterised in that：The control device further includes
Display module, wireless module, multi input end, point-polarity control unit and armful folder control unit being connected with host computer.
A kind of 3. current transformer detecting system according to claim 2, it is characterised in that：The point-polarity control unit
Including triode K1 and K2, the collector of the triode K1 and K2 is connected with power supply, its base stage passes through resistance R2, electricity respectively
Resistance R5 is connected with the output terminal of host computer, and the emitter of triode K1 and K2 are grounded through resistance R3, resistance R6 respectively, three collector K1
Base stage be connected through resistance R1 with its collector, the base stage of triode K2 is connected through resistance R4 with its collector, the resistance R3
Capacitance C1 and capacitance C2 are parallel with respectively with the both ends of R4, and the triode K1 is connected with the emitter of K2 and draws wiring conduct
Terminals one are tested, the ground terminal of the resistance R3 is connected by buzzer HA with the ground terminal of resistance R6 and resistance R3 and bee
Node between ring device HA draws wiring as test terminals two.
4. a kind of detection method of current transformer detecting system, it is characterised in that include the following steps：
（1）Host computer and slave computer read radar range finding cell data information, and are shown by display screen；
（2）Slave computer gathers hydraulic pump current information, and calculates the multisection hydraulic bar rate of climb and time, passes through PWM modulation mould
Block control Group of Silicon Controlled Rectifier Converting Unit conducting and shut-off, while frequency control is carried out to hydraulic pump, complete multisection hydraulic bar and rise
Closed-loop control, until multisection hydraulic bar reach current transformer wire locations；
（3）Multi input end input top embraces folder and picks up signal to host computer, embraces folder completion by PC control and picks up action；
（4）Whether the test wiring that current transformer is detected by point-polarity control unit contacts well, if contact is well sent
Prompt tone, and shown by display module；
（5）Wireless module receives the control signal of point-polarity control unit, and the control signal is uploaded to host computer, at the same time will
Point-polarity control unit output short-time pulse voltage is linked into current transformer primary side and produces short-time pulse electric current, in electric current
Mutual inductor secondary side cut cable determines current transformer polarity by universal meter pointer offset direction；
（6）Test terminals one are connected by embracing folder with the side of current transformer, test terminals two-way earthing switch blade, switch
It is connected with the opposite side of current transformer, the numerical value of host computer the first current sampling unit of reading and first voltage sampling unit is simultaneously
Carry out analysis calculating, while observe secondary device up-sampling information, determine whole system electric current secondary loop whether wiring it is correct,
Whether current transformer ratio is correct.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510510549.XA CN105068034B (en) | 2015-08-19 | 2015-08-19 | A kind of current transformer detecting system and its detection method |
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| CN201510510549.XA CN105068034B (en) | 2015-08-19 | 2015-08-19 | A kind of current transformer detecting system and its detection method |
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| CN105068034B true CN105068034B (en) | 2018-04-20 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106291228A (en) * | 2016-08-10 | 2017-01-04 | 国网浙江省电力公司金华供电公司 | Power transformer enclosure CT no-load voltage ratio polarity test platform |
| CN107576885B (en) * | 2017-08-23 | 2020-01-07 | 国网山东省电力公司淄博供电公司 | Polarity detection device for secondary circuit of metering transformer |
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| CN103336261A (en) * | 2013-05-30 | 2013-10-02 | 中国电力科学研究院 | High-voltage live access apparatus for current transformer |
| CN203950028U (en) * | 2014-07-15 | 2014-11-19 | 国家电网公司 | Zero magnetic flux direct-current current transformer electronic surveying elemental error pick-up unit |
| CN104385969A (en) * | 2014-11-07 | 2015-03-04 | 国家电网公司 | Voltage transformer detection vehicle |
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2015
- 2015-08-19 CN CN201510510549.XA patent/CN105068034B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008134142A (en) * | 2006-11-28 | 2008-06-12 | Kansai Electric Power Co Inc:The | Inspection device and current voltage measuring device set |
| CN201413390Y (en) * | 2009-05-22 | 2010-02-24 | 苏州市华电电气技术有限公司 | Electric power transformer field calibration vehicle |
| CN202649450U (en) * | 2012-05-16 | 2013-01-02 | 贵州电力试验研究院 | Online calibration system for electronic voltage transformer |
| CN202911610U (en) * | 2012-09-21 | 2013-05-01 | 云南电网公司普洱供电局 | Mutual inductor moving check trolley |
| CN202854319U (en) * | 2012-11-06 | 2013-04-03 | 江苏省电力公司电力科学研究院 | Vehicle-mounted current transformer high-voltage wire connection platform |
| CN103336261A (en) * | 2013-05-30 | 2013-10-02 | 中国电力科学研究院 | High-voltage live access apparatus for current transformer |
| CN203950028U (en) * | 2014-07-15 | 2014-11-19 | 国家电网公司 | Zero magnetic flux direct-current current transformer electronic surveying elemental error pick-up unit |
| CN104385969A (en) * | 2014-11-07 | 2015-03-04 | 国家电网公司 | Voltage transformer detection vehicle |
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Inventor after: Zhang Jun Inventor after: Wang Yiyong Inventor after: Zhang Dongxian Inventor after: Yan Ting Inventor after: Wang Wei Inventor after: Mu Yunlong Inventor after: Wang Yun Inventor after: Jiao Kun Inventor after: Dai Jialin Inventor after: Gao Ran Inventor after: Jing Yao Inventor after: Zhang Zhaoyuan Inventor after: Hu Zhijia Inventor after: Shu Chang Inventor after: Wang Jian Inventor after: Zang Wei Inventor after: Peng Mingzhi Inventor after: Huang Jie Inventor after: Shao Hua Inventor after: Wu Haiyan Inventor after: Chen Qian Inventor after: Chang Wenjing Inventor before: Zhang Jun Inventor before: Zhang Dongxian Inventor before: Wang Yiyong Inventor before: Yan Ting Inventor before: Wang Wei Inventor before: Mu Yunlong |
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Address after: No. 397, Tongcheng South Road, Baohe District, Hefei City, Anhui Province 230061 Patentee after: STATE GRID ANHUI POWER SUPPLY COMPANY OVERHAUL BRANCH Patentee after: STATE GRID CORPORATION OF CHINA Address before: 230000, No.397, Tongcheng South Road, Baohe District, Hefei City, Anhui Province Patentee before: Maintenance Company Of State Grid Anhui Electric Power Company Patentee before: State Grid Corporation of China |
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Address after: No. 397, Tongcheng South Road, Baohe District, Hefei City, Anhui Province 230061 Patentee after: Super high voltage branch of State Grid Anhui Electric Power Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: No. 397, Tongcheng South Road, Baohe District, Hefei City, Anhui Province 230061 Patentee before: STATE GRID ANHUI POWER SUPPLY COMPANY OVERHAUL BRANCH Patentee before: STATE GRID CORPORATION OF CHINA |