CN110927411A - Auxiliary wiring device for transformer test - Google Patents
Auxiliary wiring device for transformer test Download PDFInfo
- Publication number
- CN110927411A CN110927411A CN201910985372.7A CN201910985372A CN110927411A CN 110927411 A CN110927411 A CN 110927411A CN 201910985372 A CN201910985372 A CN 201910985372A CN 110927411 A CN110927411 A CN 110927411A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an auxiliary wiring device for a transformer test, which is powered by a power supply, wherein a display screen is arranged on the front side of the device, a wiring panel is arranged on the back side of the device, a plurality of wiring interfaces are arranged on the wiring panel, the wiring interfaces are connected with a switching circuit, the switching circuit is also connected with a central controller, and the central controller is also connected with the display screen. The transformer test auxiliary wiring device can assist the test wiring connection between an instrument and a transformer, all wiring changes can be realized through the wiring device, and the wiring change can be controlled within 5s when in use, so that the convenience and the rapidness are realized.
Description
Technical Field
The invention relates to a transformer performance testing technology, in particular to an auxiliary wiring device for a transformer test.
Background
Along with the continuous improvement of the requirement on the operation reliability of the system, the power failure maintenance time of the substation is shorter and shorter, while the transformer wastes time and labor in the test work of all primary equipment of the substation, the investigation and research show that the characteristic test time accounts for 69.33% of the whole test time, the wiring step in the characteristic test link is longest in time, and the occupation ratio reaches 71%. Therefore, in recent years, companies put a lot of efforts on research and development of new technologies in order to improve the efficiency of overhaul tests. Technical personnel improve detection means and methods of the transformer in many times, but the problem of working fatigue caused by frequent ascending and descending of the main transformer due to change of test wiring of the personnel still cannot be effectively solved, particularly the problem of sunstroke of the personnel frequently occurs during outdoor high-temperature operation, the high falling risk of field operation is greatly improved, and safety control of the field operation is not facilitated. The invention discloses an automatic transformer detection system and an automatic transformer detection method thereof in the invention patent of Chinese patent publication No. CN109115477A, published 2019, 1 month and 1 day, and named as 'an automatic transformer detection system and an automatic transformer detection method thereof', wherein the automatic transformer detection system comprises a bottom plate, walking wheels, a position adjusting device and a notch detection device, the walking wheels are mounted at the lower end of the bottom plate, the position adjusting device is mounted on the bottom plate, the notch detection device is mounted on the position adjusting device, the position adjusting device comprises a linear guide rail, an electric sliding plate, a lifting plate, a mounting frame, a bump, a bearing bracket, a pushing cylinder, a sliding frame and a guide frame, and the notch detection device comprises a mounting plate, an adjusting mechanism, a driving mechanism and a detection mechanism. The relay detection method has the disadvantages that the detection of the relay is only convenient, and a method for improving the detection efficiency and the safety of the relay is not provided.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an auxiliary wiring device for a transformer test.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a transformer test auxiliary connection device, is supplied power by the power, and the device openly is equipped with the display screen, and the device back is equipped with wiring panel, is equipped with a plurality of wiring interface on the wiring panel, and the wiring interface is connected with switching circuit, and switching circuit still is connected with central controller, and central controller still is connected with the display screen. The power supply can adopt an external 220V power supply or an internal 24V battery. The wiring panel divides wiring areas in detail, and is connected with the transformer casing head and the test instrument according to the description of each wiring area of the panel, so that the test wiring work can be completed, and the wiring process is convenient and fast.
Taking a direct current resistance test as an example, in a traditional test mode, when a direct current resistance test on a medium-voltage side is carried out after the direct current resistance test on a high-voltage side is completed, a tester needs to climb a main transformer to remove a test wiring on the high-voltage side, then the test wiring is replaced to the medium-voltage side, and the process takes at least 20 min. After the tester is utilized, the original high-voltage side direct current resistance test mode only needs to be quitted on the liquid crystal screen, the medium-voltage side direct current resistance test mode is further selected, the change of test wiring is realized by instrument control, the process is simple and rapid, the wiring can be controlled within 5s during the wiring changing, and the efficiency is greatly improved.
As a preferred scheme, the transformer test auxiliary wiring device further comprises a power management module, and the power management module is connected with a power supply, each chip and each component.
As a preferred scheme, the power management module comprises a voltage stabilizing chip, and the model of the voltage stabilizing chip is LM 2576S-5.
As a preferred scheme, switching circuit include relay and relay drive circuit, the relay is connected with relay drive circuit, relay drive circuit is connected with central controller, the relay includes high-voltage relay, middling pressure relay, low-voltage relay, middling pressure short-circuit relay, low pressure short-circuit relay and earthing relay, interconnect between high-voltage relay, middling pressure relay and the low-voltage relay, interconnect between middling pressure relay and the middling pressure short-circuit relay, interconnect between low-voltage relay and the low pressure short-circuit relay, earthing relay is connected with middling pressure short-circuit relay and low pressure short-circuit relay simultaneously. After the relay driving circuit receives the execution instruction, the functions of short circuit, grounding, suspension and the like among three phases of the transformer are realized through attraction.
Preferably, the relay is in a model of JQX 30F.
As a preferred scheme, the transformer test auxiliary wiring device further comprises a current acquisition circuit, the current acquisition circuit is connected with the switching circuit, and the current acquisition circuit is further connected with the central controller through an AD conversion circuit. The current display is not displayed in the test process of a part of test instruments, and a current monitoring function is additionally designed for monitoring the stable condition of a circuit in the whole test process. Considering that the circuit does not account for final test data processing, the designed acquisition precision is not required to be very high, the current detection precision designed by the device is 1%, the detection current range is 500mA-50A, the device has the AC/DC detection capability, and the current analog quantity is digitized and finally displayed on a screen through a current detection sensor HBC-LSP element and an AD7705 conversion chip.
As a preferred scheme, the current acquisition circuit comprises a current detection sensor, the type of which is HBC-LSP; the AD conversion circuit comprises an AD conversion chip, and the model number of the AD conversion chip is AD 7705.
As a preferred scheme, the auxiliary wiring device for the transformer test further comprises a USB interface, and the USB interface is connected with the central controller through a USB interface circuit. The USB debugging interface is arranged, so that the reading and writing of the built-in chip can be realized through the USB debugging interface in the later period, and the function expansion of other various wiring modes is facilitated.
The transformer test auxiliary wiring device has the advantages that the transformer test auxiliary wiring device can assist the test wiring connection between an instrument and a transformer, all wiring changes can be realized through the wiring device, the wiring change can be controlled within 5s when in use, and the convenience and the rapidness are realized.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a circuit diagram of the switching circuit portion of the present invention;
fig. 3 is a circuit diagram of a current acquisition circuit portion of the present invention.
Wherein: 1. the device comprises a central controller, 2, a display screen, 3, a switching circuit, 4, an AD conversion circuit, 5, a current acquisition circuit, 6 and a USB interface circuit.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example (b): the utility model provides a transformer test auxiliary connection device, is by power supply, as shown in figure 1, and the device openly is equipped with display screen 2, and the device back is equipped with wiring panel, is equipped with a plurality of wiring interface on the wiring panel, and the wiring interface is connected with switching circuit 3, and switching circuit still is connected with central controller 1, and central controller still is connected with the display screen. The transformer test auxiliary wiring device further comprises a power supply management module, and the power supply management module is connected with a power supply, each chip and each component. The power management module comprises a voltage stabilizing chip, and the model of the voltage stabilizing chip is LM 2576S-5. The transformer test auxiliary wiring device also comprises a USB interface, and the USB interface is connected with the central controller through a USB interface circuit 6. The USB debugging interface is arranged, so that the reading and writing of the built-in chip can be realized through the USB debugging interface in the later period, and the function expansion of other various wiring modes is facilitated. The transformer test auxiliary wiring device further comprises a current collecting circuit 5, the current collecting circuit is connected with the switching circuit, and the current collecting circuit is further connected with the central controller through an AD conversion circuit 4.
Taking a direct current resistance test as an example, in a traditional test mode, when a direct current resistance test on a medium-voltage side is carried out after the direct current resistance test on a high-voltage side is completed, a tester needs to climb a main transformer to remove a test wiring on the high-voltage side, then the test wiring is replaced to the medium-voltage side, and the process takes at least 20 min. After the tester is utilized, the original high-voltage side direct current resistance test mode only needs to be quitted on the liquid crystal screen, the medium-voltage side direct current resistance test mode is further selected, the change of test wiring is realized by instrument control, the process is simple and rapid, the wiring can be controlled within 5s during the wiring changing, and the efficiency is greatly improved.
The switching circuit include relay and relay drive circuit, relay and relay drive circuit are connected, relay drive circuit is connected with central controller, the relay includes high-voltage relay, the middling pressure relay, low-voltage relay, middling pressure short-circuit relay, low pressure short-circuit relay and ground connection relay, high-voltage relay, interconnect between middling pressure relay and the low-voltage relay, interconnect between middling pressure relay and the middling pressure short-circuit relay, interconnect between low-voltage relay and the low pressure short-circuit relay, ground connection relay is connected with middling pressure short-circuit relay and low pressure short-circuit relay simultaneously. As shown in fig. 2, 16 relays are included, the model number of the relays is JQX30F, and the relays include 4 high-voltage relays, 4 medium-voltage relays, 4 low-voltage relays, 2 medium-voltage short-circuit relays and 2 low-voltage short-circuit relays. Thus, 7 kinds of switching circuits are realized, specifically as follows:
1. testing a direct current resistance at a high-voltage side;
2. testing a direct current resistance at a medium-voltage side;
3. testing a direct current resistance at a low-voltage side;
4. testing the time waveform of the on-load switch;
5. high-medium short circuit impedance test;
6. high-low short circuit impedance test:
7. medium-low short circuit impedance test.
FIG. 3 is a detailed circuit diagram of a current acquisition circuit including a current sense sensor of the HBC-LSP type; the AD conversion circuit comprises an AD conversion chip, and the model number of the AD conversion chip is AD 7705.
The current display is not displayed in the test process of a part of test instruments, and a current monitoring function is additionally designed for monitoring the stable condition of a circuit in the whole test process. Considering that the circuit does not account for final test data processing, the designed acquisition precision is not required to be very high, the current detection precision designed by the device is 1%, the detection current range is 500mA-50A, the device has the AC/DC detection capability, and the current analog quantity is digitized and finally displayed on a screen through a current detection sensor HBC-LSP element and an AD7705 conversion chip.
Claims (8)
1. The utility model provides a transformer test auxiliary connection device, by power supply, characterized by, the device openly is equipped with the display screen, and the device back is equipped with wiring panel, is equipped with a plurality of wiring interface on the wiring panel, and the wiring interface is connected with switching circuit, and switching circuit still is connected with central controller, and central controller still is connected with the display screen.
2. The auxiliary wiring device for the transformer test as claimed in claim 1, further comprising a power management module, wherein the power management module is connected with a power supply and each chip and component.
3. The auxiliary wiring device for the transformer test as claimed in claim 2, wherein the power management module comprises a voltage stabilizing chip, and the model of the voltage stabilizing chip is LM 2576S-5.
4. The auxiliary wiring device for the transformer test as claimed in claim 1 or 2, wherein the switching circuit comprises a relay and a relay driving circuit, the relay is connected with the relay driving circuit, the relay driving circuit is connected with the central controller, the relay comprises a high-voltage relay, a medium-voltage relay, a low-voltage relay, a medium-voltage short-circuit relay, a low-voltage short-circuit relay and a grounding relay, the high-voltage relay, the medium-voltage relay and the low-voltage relay are connected with each other, the medium-voltage relay and the medium-voltage short-circuit relay are connected with each other, the low-voltage relay and the low-voltage short-circuit relay are connected with each other, and the grounding relay is connected with the medium-.
5. The auxiliary wiring device for the transformer test as claimed in claim 4, wherein the relay is JQX 30F.
6. The auxiliary wiring device for the transformer test as claimed in claim 1, further comprising a current collection circuit, wherein the current collection circuit is connected with the switching circuit, and the current collection circuit is further connected with the central controller through an AD conversion circuit.
7. The auxiliary wiring device for the transformer test as claimed in claim 6, wherein the current collection circuit comprises a current detection sensor of type HBC-LSP; the AD conversion circuit comprises an AD conversion chip, and the model number of the AD conversion chip is AD 7705.
8. The auxiliary wiring device for the transformer test as claimed in claim 1, further comprising a USB interface, wherein the USB interface is connected to the central controller via a USB interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910985372.7A CN110927411A (en) | 2019-10-16 | 2019-10-16 | Auxiliary wiring device for transformer test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910985372.7A CN110927411A (en) | 2019-10-16 | 2019-10-16 | Auxiliary wiring device for transformer test |
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| Publication Number | Publication Date |
|---|---|
| CN110927411A true CN110927411A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910985372.7A Pending CN110927411A (en) | 2019-10-16 | 2019-10-16 | Auxiliary wiring device for transformer test |
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| CN (1) | CN110927411A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508087A (en) * | 2011-12-26 | 2012-06-20 | 石家庄供电公司 | Integrated test stand for transformers |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN105894713A (en) * | 2016-05-05 | 2016-08-24 | 中南林业科技大学 | Security monitoring method based on non-contact temperature detection |
| CN207051234U (en) * | 2017-05-26 | 2018-02-27 | 苏州芯沃科电子科技有限公司 | A kind of test using capacitance sensor device for being used to distinguish lotus seeds concentric reducer |
| CN107798853A (en) * | 2017-10-16 | 2018-03-13 | 陕西特恩电子科技有限公司 | A kind of remote terminal tester |
| CN108333448A (en) * | 2018-01-09 | 2018-07-27 | 国网安徽省电力公司阜阳供电公司 | Transformer routine test comprehensive test device |
| CN208125829U (en) * | 2018-03-12 | 2018-11-20 | 国网浙江省电力公司金华供电公司 | A kind of main transformer attribute testing test device |
| CN109239495A (en) * | 2018-09-26 | 2019-01-18 | 合肥博微田村电气有限公司 | A kind of transformer performance automatic detection device |
| CN109470942A (en) * | 2018-03-12 | 2019-03-15 | 国网浙江省电力公司金华供电公司 | A kind of main transformer attribute testing box and its automatic control method |
| CN208752149U (en) * | 2018-08-14 | 2019-04-16 | 国网四川省电力公司遂宁供电公司 | A kind of transformer test integration termination |
| CN209230743U (en) * | 2018-12-20 | 2019-08-09 | 郑州汉威智能仪表有限公司 | A kind of quick test fixture of concentrator |
| CN211785631U (en) * | 2019-10-16 | 2020-10-27 | 国网浙江省电力有限公司金华供电公司 | Auxiliary wiring device for transformer test |
-
2019
- 2019-10-16 CN CN201910985372.7A patent/CN110927411A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508087A (en) * | 2011-12-26 | 2012-06-20 | 石家庄供电公司 | Integrated test stand for transformers |
| CN103698621A (en) * | 2013-09-05 | 2014-04-02 | 国家电网公司 | Vehicle-mounted transformer comprehensive test system |
| CN105894713A (en) * | 2016-05-05 | 2016-08-24 | 中南林业科技大学 | Security monitoring method based on non-contact temperature detection |
| CN207051234U (en) * | 2017-05-26 | 2018-02-27 | 苏州芯沃科电子科技有限公司 | A kind of test using capacitance sensor device for being used to distinguish lotus seeds concentric reducer |
| CN107798853A (en) * | 2017-10-16 | 2018-03-13 | 陕西特恩电子科技有限公司 | A kind of remote terminal tester |
| CN108333448A (en) * | 2018-01-09 | 2018-07-27 | 国网安徽省电力公司阜阳供电公司 | Transformer routine test comprehensive test device |
| CN208125829U (en) * | 2018-03-12 | 2018-11-20 | 国网浙江省电力公司金华供电公司 | A kind of main transformer attribute testing test device |
| CN109470942A (en) * | 2018-03-12 | 2019-03-15 | 国网浙江省电力公司金华供电公司 | A kind of main transformer attribute testing box and its automatic control method |
| CN208752149U (en) * | 2018-08-14 | 2019-04-16 | 国网四川省电力公司遂宁供电公司 | A kind of transformer test integration termination |
| CN109239495A (en) * | 2018-09-26 | 2019-01-18 | 合肥博微田村电气有限公司 | A kind of transformer performance automatic detection device |
| CN209230743U (en) * | 2018-12-20 | 2019-08-09 | 郑州汉威智能仪表有限公司 | A kind of quick test fixture of concentrator |
| CN211785631U (en) * | 2019-10-16 | 2020-10-27 | 国网浙江省电力有限公司金华供电公司 | Auxiliary wiring device for transformer test |
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Application publication date: 20200327 |