CN204215017U - AC test device for transformer on-load tap-changer operating characteristic - Google Patents
AC test device for transformer on-load tap-changer operating characteristic Download PDFInfo
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- CN204215017U CN204215017U CN201420768719.5U CN201420768719U CN204215017U CN 204215017 U CN204215017 U CN 204215017U CN 201420768719 U CN201420768719 U CN 201420768719U CN 204215017 U CN204215017 U CN 204215017U
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Abstract
The utility model relates to AC test device for transformer on-load tap-changer operating characteristic, AC220V power supply is through the first filter unit and rectification unit connection metal half field effect transistor, metal half field effect transistor connects boosting unit through the second filter unit, boosting unit connects the 3rd filter unit, 3rd filter unit output terminal bypass is through voltage sensor, overvoltage crowbar, short-circuit protection circuit, temperature protection circuit connects CPU processor, main road connection transformer load ratio bridging switch, on-load tap changers of transformers connects current/voltage sampling module, current/voltage sampling module connection signal acquisition process unit, signal acquisition process unit connects cpu bus, cpu bus is connected with the communication of CPU processor through communication module, CPU processor is through SPWM pulse-width modulation circuit and isolation module connection metal half field effect transistor.Operate with AC power simulation practical operation signal, characteristic during test shunting switch action each time.
Description
Technical field
The utility model relates to a kind of AC test device for transformer on-load tap-changer operating characteristic.
Background technology
The debugging of current on-load tap changers of transformers or the AC power using switch sectional switch to carry debug whether action, direct current test apparatus is used to debug at secondary side, above two kinds of modes all can only Test Switchboard whether action, time of test action whether cannot meet code requirement, and the second way and practical manner have different, the acting characteristic of switch cannot be judged exactly.
Summary of the invention
The purpose of this utility model is the deficiency overcoming prior art existence, provides a kind of AC test device for transformer on-load tap-changer operating characteristic.
The purpose of this utility model is achieved through the following technical solutions:
AC test device for transformer on-load tap-changer operating characteristic, feature is: comprise AC220V power supply and CPU processor, AC220V power supply is connected to metal half field effect transistor through the first filter unit and rectification unit, metal half field effect transistor connects boosting unit through the second filter unit, boosting unit connects the 3rd filter unit, 3rd filter unit output terminal bypass is through voltage sensor, overvoltage crowbar, short-circuit protection circuit, temperature protection circuit connects CPU processor, 3rd filter unit output terminal main road connection transformer load ratio bridging switch, on-load tap changers of transformers connects current/voltage sampling module, current/voltage sampling module connection signal acquisition process unit, signal acquisition process unit connects cpu bus, cpu bus is connected with the communication of CPU processor through communication module, CPU processor is through SPWM pulse-width modulation circuit and isolation module connection metal half field effect transistor, fpga chip connects cpu bus and mixed-media network modules mixed-media respectively, mixed-media network modules mixed-media connects PC data analysis storage and display unit.
Further, above-mentioned AC test device for transformer on-load tap-changer operating characteristic, wherein, connection status display unit on described fpga chip.
Further, above-mentioned AC test device for transformer on-load tap-changer operating characteristic, wherein, described metal half field effect transistor is model is 80N60 transistor.
Again further, above-mentioned AC test device for transformer on-load tap-changer operating characteristic, wherein, described fpga chip is model is EP3C5 chip.
Substantive distinguishing features and the progress of technical solutions of the utility model are mainly reflected in:
1. the power supply being transported to on-load tap changers of transformers is standard AC signal, consistent with the signal of practical adjustments load ratio bridging switch, and testing power supply is directly connected with the mains input side of on-load shunting switch, and test effect is close to practical operation situation; On market, other instruments all use direct current signal to access from the internal circuit of load ratio bridging switch, have walked around mains input side, though also can test, but test process is imperfect;
2. not only can test load ratio bridging switch whether outside regular event, whether interval actuation time can also testing load ratio bridging switch is consistent, whether voltage signal is without exception etc. in course of action;
3. AC power simulation practical operation signal is adopted to operate, and characteristic when can also test shunting switch action each time by sensor, as the data such as synchronism of actuation time, three-phase; Be provided with standard AC power supply and outputting current steadily is controlled, can not damage because of the excessive shunting switch that causes of electric current.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Fig. 1: structure block diagram of the present utility model.
Embodiment
As shown in Figure 1, AC test device for transformer on-load tap-changer operating characteristic, comprise AC220V power supply 1 and CPU processor 4, AC220V power supply 1 is connected to metal half field effect transistor 7 through the first filter unit 2 and rectification unit 3, metal half field effect transistor 7 is models is 80N60 transistor, metal half field effect transistor 7 connects boosting unit 9 through the second filter unit 8, boosting unit 9 connects the 3rd filter unit 10, 3rd filter unit 10 output terminal bypass is through voltage sensor 11, overvoltage crowbar 12, short-circuit protection circuit 13, temperature protection circuit 14 connects CPU processor 4, 3rd filter unit output terminal main road connection transformer load ratio bridging switch 16, on-load tap changers of transformers 16 connects current/voltage sampling module 17, current/voltage sampling module 17 connection signal acquisition process unit 18, signal acquisition process unit 18 connects cpu bus 20, cpu bus 20 is connected with CPU processor 4 communication through communication module 15, CPU processor 4 is through SPWM pulse-width modulation circuit 5 and isolation module 6 connection metal half field effect transistor 7, fpga chip 19 connects cpu bus 20 and mixed-media network modules mixed-media 21 respectively, status display unit 23 connects fpga chip 19, fpga chip 19 is models is EP3C5 chip, mixed-media network modules mixed-media 21 connects cpu bus 20 and PC data analysis storage and display unit 22.
AC220V power supply 1 is mains-supplied, first filter unit 2 is for filtering and isolate the interference of civil power to machine, first filter unit 2, to the alternating voltage after rectification unit 3 output filtering, is rectified into direct supply after rectification unit 3, transfers to metal half field effect transistor 7; CPU processor 4 exports control signal to SPWM pulse-width modulation circuit 5, isolation module 6 isolate after circuit to the interference of CPU processor 4 and SPWM pulse-width modulation circuit 5, and then metal half field effect transistor 7 to be controlled; Direct supply becomes standard AC power supply after metal half field effect transistor 7, filtering is carried out again by the second filter unit 8 pairs of AC power, the voltage of standard AC power supply is risen to test voltage through boosting unit 9 by filtered AC power, then by the 3rd filter unit 10 filtering and isolation test end the interference of internal circuit is exported to voltage sensor 11 and on-load tap changers of transformers 16; Output voltage is down to light current by voltage sensor 11 by AC power, be convenient to control circuit monitoring, light current by voltage sensor 11 through voltage protection circuit 12, short-circuit protection circuit 13, temperature protection circuit 14, feedback signal is transmitted to CPU processor 4 by each module, feed back to the situation of CPU output voltage, protection circuit and testing crew injury-free; The voltage that 3rd filter unit 10 exports is transmitted to the voltage output end of on-load tap changers of transformers 16, the voltage exported carries out current/voltage sampling eventually through current/voltage sampling module 17 after the internal circuit of on-load tap changers of transformers 16, signal flow to signal acquisition process unit 18 signal acquisition process produce data-signal, data-signal through fpga chip 19 (communication signal transmitting-receiving overall channel) by communication module 15 to CPU processor 4 signal transmission; Data-signal is transmitted to PC data analysis storage and display unit 22 by mixed-media network modules mixed-media 21; Fpga chip 19 has control and Presentation Function, transmits the data-signal after calculating to status display unit 23, transmits the data-signal after calculating to mixed-media network modules mixed-media 21.
In sum, the power supply being transported to on-load tap changers of transformers is standard AC signal, consistent with the signal of practical adjustments load ratio bridging switch, and testing power supply is directly connected with the mains input side of on-load shunting switch, and test effect is close to practical operation situation; On market, other instruments all use direct current signal to access from the internal circuit of load ratio bridging switch, have walked around mains input side, though also can test, but test process is imperfect; Not only can test load ratio bridging switch whether outside regular event, whether interval actuation time can also testing load ratio bridging switch is consistent, whether voltage signal is without exception etc. in course of action; AC power simulation practical operation signal is adopted to operate, and characteristic when can also test shunting switch action each time by sensor, as the data such as synchronism of actuation time, three-phase.Be provided with standard AC power supply and outputting current steadily is controlled, can not damage because of the excessive shunting switch that causes of electric current.
It is emphasized that: be only preferred embodiment of the present utility model above, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. AC test device for transformer on-load tap-changer operating characteristic, it is characterized in that: comprise AC220V power supply and CPU processor, AC220V power supply is connected to metal half field effect transistor through the first filter unit and rectification unit, metal half field effect transistor connects boosting unit through the second filter unit, boosting unit connects the 3rd filter unit, 3rd filter unit output terminal bypass is through voltage sensor, overvoltage crowbar, short-circuit protection circuit, temperature protection circuit connects CPU processor, 3rd filter unit output terminal main road connection transformer load ratio bridging switch, on-load tap changers of transformers connects current/voltage sampling module, current/voltage sampling module connection signal acquisition process unit, signal acquisition process unit connects cpu bus, cpu bus is connected with the communication of CPU processor through communication module, CPU processor is through SPWM pulse-width modulation circuit and isolation module connection metal half field effect transistor, fpga chip connects cpu bus and mixed-media network modules mixed-media respectively, mixed-media network modules mixed-media connects PC data analysis storage and display unit.
2. AC test device for transformer on-load tap-changer operating characteristic according to claim 1, is characterized in that: connection status display unit on described fpga chip.
3. AC test device for transformer on-load tap-changer operating characteristic according to claim 1, is characterized in that: described metal half field effect transistor is model is 80N60 transistor.
4. AC test device for transformer on-load tap-changer operating characteristic according to claim 1, is characterized in that: described fpga chip is model is EP3C5 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768719.5U CN204215017U (en) | 2014-12-09 | 2014-12-09 | AC test device for transformer on-load tap-changer operating characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768719.5U CN204215017U (en) | 2014-12-09 | 2014-12-09 | AC test device for transformer on-load tap-changer operating characteristic |
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| Publication Number | Publication Date |
|---|---|
| CN204215017U true CN204215017U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420768719.5U Expired - Fee Related CN204215017U (en) | 2014-12-09 | 2014-12-09 | AC test device for transformer on-load tap-changer operating characteristic |
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| CN (1) | CN204215017U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223496A (en) * | 2015-04-17 | 2016-01-06 | 吉林省电力科学研究院有限公司 | On-load tap changers of transformers naked switch action characteristic alternating-current measurement device |
| CN112630642A (en) * | 2020-12-09 | 2021-04-09 | 中国电力科学研究院有限公司 | System and method for switching on-load tap-changer of transformer |
| CN112986811A (en) * | 2021-02-08 | 2021-06-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Testing device and method for converter transformer tap switch top cover pressure-bearing limit arc test |
| CN112986812A (en) * | 2021-02-08 | 2021-06-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-energy arc short-circuit fault test simulation device and method for tap changer |
-
2014
- 2014-12-09 CN CN201420768719.5U patent/CN204215017U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223496A (en) * | 2015-04-17 | 2016-01-06 | 吉林省电力科学研究院有限公司 | On-load tap changers of transformers naked switch action characteristic alternating-current measurement device |
| CN112630642A (en) * | 2020-12-09 | 2021-04-09 | 中国电力科学研究院有限公司 | System and method for switching on-load tap-changer of transformer |
| CN112630642B (en) * | 2020-12-09 | 2024-01-26 | 中国电力科学研究院有限公司 | System and method for switching on-load tap-changer of transformer |
| CN112986811A (en) * | 2021-02-08 | 2021-06-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Testing device and method for converter transformer tap switch top cover pressure-bearing limit arc test |
| CN112986812A (en) * | 2021-02-08 | 2021-06-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-energy arc short-circuit fault test simulation device and method for tap changer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20171209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |