CN206892160U - A kind of direct current resistance tester of full-automatic transformer - Google Patents
A kind of direct current resistance tester of full-automatic transformer Download PDFInfo
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- CN206892160U CN206892160U CN201720785445.4U CN201720785445U CN206892160U CN 206892160 U CN206892160 U CN 206892160U CN 201720785445 U CN201720785445 U CN 201720785445U CN 206892160 U CN206892160 U CN 206892160U
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Abstract
The technical field of transformer in power system is the utility model is related to, more particularly, to a kind of direct current resistance tester of full-automatic transformer.Master unit and the human-computer interaction module electrically connected with CPU control master units, gearshift control module, memory module and protection module are controlled including CPU; human-computer interaction module is used to input configuration information and output detection information; gearshift control module is carried out lifting shelves control to the gear of on-load tap-changer of transformer, and protection module is upshiftd and protected during downshift operation simultaneously to on-load voltage regulating switch.It can realize that automatic gear shifting detects to the D.C. resistance of each gear during detection, and data are handled, when detecting data exception, automatically grinding can be carried out or remind staff to carry out corresponding operating, Intelligent Measurement is realized, save substantial amounts of human resources.
Description
Technical field
The technical field of transformer in power system is the utility model is related to, more particularly, to a kind of full-automatic transformation
Device instrument for measuring DC resistance.
Background technology
As the important composition among power system, the orderly operation of main transformer safety and steady, be supply of electric power peace
The important guarantee of full property.Main transformer on-load voltage regulating switch has 17 gears, to ensure to be unsatisfactory for mass of system requirement in voltage
When by regulation stall, so as to adjust voltage, voltage is met system requirements, and we carry out D.C. resistance survey to main transformer
Need to carry out D.C. resistance test to each gear of this 17 gears during examination.At this stage, direct current is completed to some gear
It is necessary to which next gear is adjusted by the pressure regulation knob on manual operation on-load voltage regulating switch after resistance test, so
Carry out the test of next gear again afterwards.This mode rely primarily on manual operation, it is necessary to staff it is more, operating efficiency
It is relatively low.
Utility model content
The utility model is to overcome at least one defect described in above-mentioned prior art, there is provided one kind can be automatically performed transformation
The step of device D.C. resistance is tested, and is not required to expend too many human resources, and staff operates is simple, and testing result is accurate, inspection
Survey the higher tester of efficiency and detection method.
In order to solve the above technical problems, the utility model employs following technical scheme：
A kind of direct current resistance tester of full-automatic transformer, including CPU control master unit and are electrically connected with CPU control master units
Human-computer interaction module, gearshift control module, memory module and the protection module connect, human-computer interaction module, which is used to input, sets letter
Breath and output detection information, gearshift control module carry out lifting shelves control to the gear of on-load tap-changer of transformer, protect mould
Block is upshiftd and protected during downshift operation simultaneously to on-load voltage regulating switch.
Further, described gearshift control module includes wireless gear shift module, wired gear shift module, gear information collection
Module and detection interface, wireless gear shift module, wired gear shift module and gear information acquisition module control master unit with CPU respectively
Connection, detection interface are connected with wireless gear shift module and wired gear shift module respectively.Gearshift control mode include line traffic control and
Controlled in wireless, in shift process, position of transferring the files is determined by gear information acquisition module.
Further, described wireless gear shift module includes wireless sending module and wireless receiving module, and preferably RF is wireless
Sending module and RF wireless receiving modules, the two is connected by wireless connection, wireless sending module with CPU control master units, nothing
Line receiving module is connected with detection interface；Gear information acquisition module is current sample module.For some gears, using wireless
The mode of remote control is transferred the files, and CPU control master unit control wireless sending modules send information of transferring the files, and wireless receiving module receives tune
Control detection interface carries out gear-change operation after shelves information.The electric current that gear information is expressed as 4-20mA is input to gear information collection
Module, gear information acquisition module are current sample module, and current gear is determined by the size of electric current.
Further, described human-computer interaction module includes keyboard and display screen, and the two is connected with CPU control master units
Connect.Staff can set the related data of transformer, in D.C. resistance detection process, display screen real-time display by keyboard
Gear information and detection information etc., the operation of testing result and suggestion is fed directly to staff.
Further, described protection module includes counter electromotive force protection location and AD sampling modules, the two interconnection,
AD sampling modules connection CPU control master units.AD sampling modules are acquired to the state of on-load voltage regulating switch and send CPU to
Master unit is controlled, counter electromotive force protection location is connected with AD sampling modules, is upshiftd and is dropped simultaneously in on-load voltage regulating switch
Voltage device is shielded during shelves operation.
In detection, detecting step is as follows：
S1：By the pressure regulation button on on-load tap-changer of transformer and test point and tester each detection, interface is corresponding connects
Connect, press start button after self-defined setting is carried out to detection pattern, tester carries out self-test and detects the connection of each p-wire
State；
S2：Tester detects each p-wire connection normally, carries out five full gears automatically and polishes back and forth；
S3：A gear is returned, each phase D.C. resistance of full gear is carried out and detects and calculate three-phase imbalance rate automatically, sentence automatically
Whether disconnected detection data are normal, if data are normal, detection is completed in shutdown, if data are abnormal, by default settling mode pair
Prompting message is polished or exported to gear, and testing result is stored in memory module；
S4：Polishing is completed or staff completes respective operations, tester repeat step S3 operations according to prompting message.
Compared with prior art, beneficial effect is：The automatic measurement of the D.C. resistance of main transformer is realized, and is not required to
Take out stitches, in detection process, automatic gear shifting and automatically grinding can be carried out, considerably reduce the workload of staff；And
Detection data can be stored automatically, facilitate staff to check the testing result of transformer.
Brief description of the drawings
Fig. 1 is the schematic diagram of direct current resistance tester of full-automatic transformer；
Fig. 2 is the testing process of direct current resistance tester of full-automatic transformer.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in further detail.
As shown in figure 1, it is control core that CPU, which controls master unit, human-computer interaction module includes keyboard and display screen, respectively with
CPU control master unit connections；Protection module includes counter electromotive force protection location and AD sampling modules, the anti-electricity of AD sampling modules connection
Kinetic potential unit and CPU control master units；Gearshift control module includes gear information acquisition module, wired gear shift module and wirelessly changed
Shelves module, three is connected with CPU control master units respectively, wireless in wired gear shift module therein and wireless shift module
Receiving module is connected with detection interface, and detection interface is used to connect the test point and pressure regulation button on main transformer, so as to real
Existing gear shift operation；Other memory module is connected with CPU control master units.
In detection, by the upper test point for detecting interface and transformer and pressure regulation button is corresponding connects, and passes through keyboard
Transformer parameter and other information are set, start tester.CPU control gearshift control modules realize self shifter, will detect
Data handled.The collection of gear information is completed by current sample module, and gear information is expressed as to 4-20mA electric current
Current sample module is input to, current gear is determined by the size of electric current.
In detection process, detection data be stored in memory module, and in real time by display screen by gear information, inspection
Survey data and result is supplied to staff.If the behaviour that gearshift control module is mistakenly assigned while upshiftd and downshifted
Make, protection module starts, and prevents transformer regulating button and carries out the operation.
As shown in Fig. 2 being the testing process of direct current resistance tester of full-automatic transformer, step is as follows：
S1：By the pressure regulation button on on-load tap-changer of transformer and test point and tester each detection, interface is corresponding connects
Connect, press start button after self-defined setting is carried out to detection pattern, tester carries out self-test and detects the connection of each p-wire
State；
S2：Tester detects each p-wire connection normally, carries out five full gears automatically and polishes back and forth；
S3：A gear is returned, each phase D.C. resistance of full gear is carried out and detects and calculate three-phase imbalance rate automatically, sentence automatically
Whether disconnected detection data are normal, if data are normal, detection is completed in shutdown, if data are abnormal, by default settling mode pair
Prompting message is polished or exported to gear；
S4：Polishing is completed or staff completes respective operations, tester repeat step S3 operations according to prompting message.
Specifically, when the step S3 detectors judge that detection data are abnormal, it is as follows to preset settling mode：
S31：Threshold decision is carried out to D.C. resistance data, if a certain mutually full gear data exceed given threshold, judged
Probably due to instrument wire contacts are bad, operating personnel's rewiring can be reminded；
S32:If a certain mutually full gear data have compared multiple proportion with other two, judgement is probably to have certain mutually to break
Failure and operating personnel are reminded from display screen；
S33：If there is deviation in odd number whole gear or even numbers whole gear data, the gearshift being judged as in shunting switch
Switch contact is likely to occur oxidation, now tester record judged result and send instruction automatically in adjacent gear positions back and forth not
The lifting shelves stopped, for switch contact of polishing；
S34：If there is a gear n directly to hinder exception, illustrate that the switch contact of the gear is likely to occur oxidation, now tester
Record judged result and send instruction and polished back and forth in n-1 to n+1 shelves automatically；
S35：Gone wrong if 1-9 shelves or 9-17 shelves directly hinder data, illustrate the polarity switch contact oxidation of shunting switch,
Now tester, which will record judged result and send automatic 8 to 10 grades of instruction, carries out descending operation back and forth.
Specifically, in detection process, human-computer interaction module real-time display gear information, D.C. resistance information, direct current
Hinder diagnostic message and tactful revision information, memory module storage related data.Staff need to understand inspection in detection process
, it is necessary to make corresponding maintenance operation to testing result, human-computer interaction module in real time can pass information for survey progress and testing result
Pass staff.
In detection process, pressing power-off button can detection of end at any time.In maintenance process, it is sometimes found that bigger
Failure, it is necessary to the system of progress maintenance, it is necessary to first stop detection, this function is set, adds the flexibility of detection process.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.All made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in
Within the protection domain of the utility model claims.
Claims (7)
- A kind of 1. direct current resistance tester of full-automatic transformer, it is characterised in that：Master unit is controlled including CPU and is controlled with CPU The human-computer interaction module of master unit electrical connection, shift gears control module, memory module and protection module, human-computer interaction module are used for Configuration information and output detection information are inputted, gearshift control module carries out lifting shelves control to the gear of on-load tap-changer of transformer System, protection module are upshiftd and protected during downshift operation simultaneously to on-load voltage regulating switch.
- A kind of 2. direct current resistance tester of full-automatic transformer according to claim 1, it is characterised in that：Described gear shift Control module includes wireless gear shift module, wired gear shift module, gear information acquisition module and detection interface, wireless gear shift mould Block, wired gear shift module and gear information acquisition module are connected with CPU control master units respectively, and detection interface is respectively with wirelessly changing Shelves module connects with wired gear shift module.
- A kind of 3. direct current resistance tester of full-automatic transformer according to claim 2, it is characterised in that：Described is wireless Gear shift module includes wireless sending module and wireless receiving module, and the two is controlled by wireless connection, wireless sending module with CPU Master unit is connected, and wireless receiving module is connected with detection interface.
- A kind of 4. direct current resistance tester of full-automatic transformer according to claim 2, it is characterised in that：Described gear Information acquisition module is current sample module.
- A kind of 5. direct current resistance tester of full-automatic transformer according to claim 3, it is characterised in that：The wireless hair It is respectively RF wireless sending modules and RF wireless receiving modules to send module and wireless receiving module.
- A kind of 6. direct current resistance tester of full-automatic transformer according to claim 1, it is characterised in that：Described is man-machine Interactive module includes keyboard and display screen, and the two is connected with CPU control master units.
- A kind of 7. direct current resistance tester of full-automatic transformer according to claim 1, it is characterised in that：Described protection Module includes counter electromotive force protection location and AD sampling modules, the two interconnection, and AD sampling modules connection CPU controls main list Member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720785445.4U CN206892160U (en) | 2017-07-01 | 2017-07-01 | A kind of direct current resistance tester of full-automatic transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720785445.4U CN206892160U (en) | 2017-07-01 | 2017-07-01 | A kind of direct current resistance tester of full-automatic transformer |
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| CN206892160U true CN206892160U (en) | 2018-01-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228966A (en) * | 2017-07-01 | 2017-10-03 | 广东电网有限责任公司珠海供电局 | A kind of direct current resistance tester of full-automatic transformer and its method of testing |
| CN110456160A (en) * | 2019-08-20 | 2019-11-15 | 保定市森茂科技有限公司 | Super-pressure three-phase transformer D.C. resistance test method and test device |
| CN112816801A (en) * | 2020-08-28 | 2021-05-18 | 苏州灵成电气有限公司 | Transformer arrester detecting system |
-
2017
- 2017-07-01 CN CN201720785445.4U patent/CN206892160U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228966A (en) * | 2017-07-01 | 2017-10-03 | 广东电网有限责任公司珠海供电局 | A kind of direct current resistance tester of full-automatic transformer and its method of testing |
| CN110456160A (en) * | 2019-08-20 | 2019-11-15 | 保定市森茂科技有限公司 | Super-pressure three-phase transformer D.C. resistance test method and test device |
| CN110456160B (en) * | 2019-08-20 | 2021-11-30 | 保定市森茂科技有限公司 | Method and device for testing direct current resistance of ultrahigh voltage three-phase transformer |
| CN112816801A (en) * | 2020-08-28 | 2021-05-18 | 苏州灵成电气有限公司 | Transformer arrester detecting system |
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