CN201522538U - Integral polarity test instrument of current transformer - Google Patents
Integral polarity test instrument of current transformer Download PDFInfo
- Publication number
- CN201522538U CN201522538U CN 200920256252 CN200920256252U CN201522538U CN 201522538 U CN201522538 U CN 201522538U CN 200920256252 CN200920256252 CN 200920256252 CN 200920256252 U CN200920256252 U CN 200920256252U CN 201522538 U CN201522538 U CN 201522538U
- Authority
- CN
- China
- Prior art keywords
- current transformer
- polarity
- test
- unit
- data transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 238000003491 array Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 7
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 2
- 230000010354 integration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses an integral polarity test instrument of a current transformer and relates to the test instrument of the current transformer, which comprises a central processing unit, wherein the central processing unit is respectively connected with a wireless data transmission module, a polarity signal detection unit and a pulse signal generation unit through data cables, and the wireless data transmission module is connected with a wireless voice communication unit which is used for providing a tester voice communication channel between a CT side and a protection side. The central processing unit is connected with the wireless data transmission module, the pulse signal generation unit and the polarity signal detection unit, a pulse source signal required for a test is generated on the CT side, and a polarity signal is detected on the protection side. The integral polarity test instrument of the current transformer has simple structure and high integration degree, leads the operation to be more convenient, changes the complicated status that a battery A is taken as a power supply in the past and constantly connected and disconnected, and a walkie-talkie is further needed for telling the connection and the disconnection of the test on the protection side and further improves the working efficiency and the reliability of the whole test.
Description
Technical field
The utility model relates to a kind of current transformer integral polarity tester, belongs to current transformer tester technical field.
Background technology
The integral polarity method of measuring current mutual inductor is more original at present; the tester climbs on the current transformer; with the A-battery is power supply; constantly taking switching opens; also to tell the test of protection side to take switching and open situation with walkie-talkie; inefficiency presses for integral polarity test method for current mutual inductor is reformed, and finds out the new method of testing that is fit to electric substation's operating mode.
Summary of the invention
At the defective that exists in the prior art, the purpose of this utility model is to provide a kind of current transformer integral polarity tester, and is simple in structure, and the integrated level height is easy to operate, improves the work efficiency and the reliability of whole test.
For reaching above purpose, the technical scheme that the utility model is taked is:
Current transformer integral polarity tester; it is characterized in that: comprise central processor unit; central processor unit is connected with wireless data transmission module, polar signal detecting unit, pulse signal generating unit respectively by data line, and wireless data transmission module and the wireless speech communication unit that is used to the CT side is provided and protect tester's speech communication passage between the side connect.
On the basis of technique scheme, the pulse signal generating unit is the independent current source power supply, is provided with some photoelectric relay arrays in the pulse signal generating unit.
On the basis of technique scheme, the polar signal detecting unit is provided with additive polarity detection module and subtractive polarity detection module.
Current transformer integral polarity tester described in the utility model; simple in structure; the integrated level height; make more convenient to operate; changed is power supply with the A-battery in the past; constantly take switching and open, also will tell the test of protection side to take the complicated situation that switching is opened, improve the work efficiency and the reliability of whole test with walkie-talkie.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is a system construction drawing of the present utility model
Fig. 2 is principle of work block diagram of the present utility model and process flow diagram
Fig. 3 is the Appearance Panel synoptic diagram of the present utility model
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the system construction drawing of current transformer integral polarity tester described in the utility model; comprise central processor unit; central processor unit is connected with wireless data transmission module, polar signal detecting unit, pulse signal generating unit respectively by data line, and wireless data transmission module and the wireless speech communication unit that is used to the CT side is provided and protect tester's speech communication passage between the side connect.Central processor unit of the present utility model adopts the Atmega128 of AVR as the control core, Atmega128 is the high SoC of a integrated level, the almost embedded required control modules of all these testers, fully without any need for peripheral components, and very easily expansion, system stability are high.Atmega128 is mainly used in NGN network communication subelement processor at present, and its performance is extensively approved.Real time operating system uCOS-II is the kernel software platform that this tester adopts, and endorses cutting in this, and is widely used in can well being realized on this kernel for real-time control in this tester and measurement in the control application of all trades and professions.
On the basis of technique scheme, the pulse signal generating unit is the independent current source power supply, is provided with some photoelectric relay arrays in the pulse signal generating unit.The pulse signal generating unit is an independent current source, and purpose is in order to isolate with operation part, can to adopt No. 5 general nickel-hydrogen chargeable cells of industry as the main operation power supply, low price and easy to use.The pulse signal generating unit is made of the photoelectric relay PVN012 array of IR company, and the pulse signal that is used to provide varying strength is given the CT side.
On the basis of technique scheme, the polar signal detecting unit is provided with additive polarity detection module and subtractive polarity detection module.As the demonstration of test result, it is additive polarity or subtractive polarity that the utility model utilizes two LED to indicate test result, simple, intuitive.
In sum, the function of each unit of the utility model is as follows:
1) wireless speech communication unit is used to provide tester's speech communication passage between CT side and the protection side;
2) wireless data transmission module provides CT side and the measuring control signal of protection side and the transmission channel of measurement result, and is used for collaborative CT side and protects action and the detection sequential of side in process of the test;
3) CPU (central processing unit) is connected with wireless data transmission module, pulse signal generating unit, polar signal detecting unit, produces the required impulse source signal of test in the CT side, and detects polar signal in the protection side; CPU (central processing unit) according to tester setting to decide the test role be CT side or protection side, whole test process is by the one-key operation of protection side start button, the result is presented at CT side and protection side respectively;
4) pulse signal generating unit is connected with CPU (central processing unit), is used for sending the polarity measurement signal in the CT side;
5) polar signal detecting unit is connected with CPU (central processing unit), is used for detecting polar signal in the protection side.Fig. 3 is the Appearance Panel synoptic diagram of the present utility model.
Advantage of the present utility model: this current transformer integral polarity tester has replaced testing equipments such as the A-battery of bulky heaviness, pointer microampere meter and walkie-talkie, can reduce the overall volume of pilot system greatly, reduce cost, and test connection is simple, do not need to carry out numerous and diverse test preliminary work, increase work efficiency and reliability.
Fig. 2 is principle of work block diagram of the present utility model and process flow diagram, and the utility model basic control principle is as follows:
1. the tester that is operated in the protection side sends the test commencing signal by wireless data transmission module, and begins synchronous whole test sequence by start button.
2.CT side test instrument wireless data transmission module receives the commencing signal that the protection side is sent, and at first sends the pulse signal of minimum strength, and begins synchronous whole test sequence.
3. if the protection side does not detect polar signal at the appointed time, then, improve pulse signal intensity by wireless data transmission module notice CT side, detect effective polar signal up to the protection side.Otherwise test process failure.
4. after the protection side detected polar signal, test result notice CT side, test result was simultaneously displayed on protection side and CT side by wireless data transmission module.
The main measuring-signal of the utility model is the polarity of protection lateral vein towards signal; disappear and tremble algorithm and can remove on-the-spot interference well through disappear twitter circuit and corresponding software of hardware; to various model C T and secondary side wiring length and good environmental adaptability, improved ease of use to a certain extent.At the system applies function expansion, the utility model can provide multiple spot to measure simultaneously in the future.Use through on-the-spot actual test, the utility model can satisfy the testing of electric system current transformer integral polarity fully, and the dirigibility of test greatly is provided, and the integrated level height is easy to carry, and has improved production efficiency.
Claims (3)
1. current transformer integral polarity tester; it is characterized in that: comprise central processor unit; central processor unit is connected with wireless data transmission module, polar signal detecting unit, pulse signal generating unit respectively by data line, and wireless data transmission module and the wireless speech communication unit that is used to the CT side is provided and protect tester's speech communication passage between the side connect.
2. current transformer integral polarity tester as claimed in claim 1 is characterized in that: the pulse signal generating unit is the independent current source power supply, is provided with some photoelectric relay arrays in the pulse signal generating unit.
3. current transformer integral polarity tester as claimed in claim 1 or 2 is characterized in that: the polar signal detecting unit is provided with additive polarity detection module and subtractive polarity detection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920256252 CN201522538U (en) | 2009-11-19 | 2009-11-19 | Integral polarity test instrument of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920256252 CN201522538U (en) | 2009-11-19 | 2009-11-19 | Integral polarity test instrument of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522538U true CN201522538U (en) | 2010-07-07 |
Family
ID=42508716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920256252 Expired - Fee Related CN201522538U (en) | 2009-11-19 | 2009-11-19 | Integral polarity test instrument of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201522538U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435907A (en) * | 2011-10-31 | 2012-05-02 | 许继集团有限公司 | Polarity testing method for electronic current transformer |
| CN103389439A (en) * | 2013-07-29 | 2013-11-13 | 国家电网公司 | CT (computed tomography) polarity detecting instrument |
| CN104133154A (en) * | 2013-05-03 | 2014-11-05 | 武汉凯默电气有限公司 | Intelligent substation current transformer polarity test method and device |
| CN104166072A (en) * | 2014-08-22 | 2014-11-26 | 江苏省电力公司常州供电公司 | Intelligent polarity detection device and method for four-star type voltage transformer |
| WO2016026231A1 (en) * | 2014-08-22 | 2016-02-25 | 江苏省电力公司常州供电公司 | Intelligent polarity detection apparatus and method for four-star type voltage transformer |
| CN108107314A (en) * | 2017-12-14 | 2018-06-01 | 国家电网公司 | A kind of polarity testing device of current transformer |
| CN110579676A (en) * | 2019-09-19 | 2019-12-17 | 国网辽宁省电力有限公司营口供电公司 | Automatic polarity detection device |
| CN111025054A (en) * | 2019-12-03 | 2020-04-17 | 天津送变电工程有限公司 | Multifunctional wireless relay protection debugging auxiliary instrument |
| CN112684381A (en) * | 2020-12-03 | 2021-04-20 | 广东电网有限责任公司中山供电局 | CT polarity tester of hand-held type wireless transmission sampling |
-
2009
- 2009-11-19 CN CN 200920256252 patent/CN201522538U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435907A (en) * | 2011-10-31 | 2012-05-02 | 许继集团有限公司 | Polarity testing method for electronic current transformer |
| CN104133154A (en) * | 2013-05-03 | 2014-11-05 | 武汉凯默电气有限公司 | Intelligent substation current transformer polarity test method and device |
| CN104133154B (en) * | 2013-05-03 | 2016-12-28 | 武汉凯默电气有限公司 | A kind of intelligent substation current transformer polarity testing method and device |
| CN103389439A (en) * | 2013-07-29 | 2013-11-13 | 国家电网公司 | CT (computed tomography) polarity detecting instrument |
| CN104166072A (en) * | 2014-08-22 | 2014-11-26 | 江苏省电力公司常州供电公司 | Intelligent polarity detection device and method for four-star type voltage transformer |
| WO2016026231A1 (en) * | 2014-08-22 | 2016-02-25 | 江苏省电力公司常州供电公司 | Intelligent polarity detection apparatus and method for four-star type voltage transformer |
| CN104166072B (en) * | 2014-08-22 | 2017-07-18 | 江苏省电力公司常州供电公司 | The intelligent device for detecting polarity of four star-like voltage transformers and detection method |
| CN108107314A (en) * | 2017-12-14 | 2018-06-01 | 国家电网公司 | A kind of polarity testing device of current transformer |
| CN110579676A (en) * | 2019-09-19 | 2019-12-17 | 国网辽宁省电力有限公司营口供电公司 | Automatic polarity detection device |
| CN111025054A (en) * | 2019-12-03 | 2020-04-17 | 天津送变电工程有限公司 | Multifunctional wireless relay protection debugging auxiliary instrument |
| CN112684381A (en) * | 2020-12-03 | 2021-04-20 | 广东电网有限责任公司中山供电局 | CT polarity tester of hand-held type wireless transmission sampling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201522538U (en) | Integral polarity test instrument of current transformer | |
| CN108919002A (en) | A kind of test macro of direct-current charging post | |
| CN202133738U (en) | Detection and protection device for fault arc | |
| CN202758035U (en) | Cable fault tester | |
| CN104931863A (en) | Synchronizing signal generator used for cable partial discharge test | |
| CN203324403U (en) | Power distribution network feed line protection digital dynamic test system comprising distributed power sources | |
| CN205901757U (en) | Carrier communication module intelligent detecting system | |
| CN204065308U (en) | A kind of polycore cable is to line and fault detection system | |
| CN104777388A (en) | Method for recognizing power supply branch circuit users through zero sequence current sampling method | |
| CN102435907A (en) | Polarity testing method for electronic current transformer | |
| CN105116278A (en) | Electric energy meter missort line tracker | |
| CN104849591B (en) | A kind of power distribution automation integration test detection means | |
| CN202058289U (en) | Inspection device for electricity utilization information acquisition terminal | |
| CN210427707U (en) | Integrated insulation detection's on-vehicle machine test system that charges | |
| CN208384025U (en) | A kind of test macro of direct-current charging post | |
| CN108333507B (en) | Generator excitation regulator detecting system | |
| CN105699740A (en) | Method for measuring all-scale range current | |
| WO2018194870A1 (en) | Solar array communications | |
| CN207366715U (en) | A kind of battery SOC estimation device based on CAN bus | |
| CN205091421U (en) | Synchronous generator winding short circuit alarm device based on negative current | |
| CN104614627A (en) | Portable DC leakage detection positioning device and detection positioning method | |
| CN204945358U (en) | A kind of various dimensions information monitoring instrument for current mutual inductor on site verification | |
| CN210665875U (en) | Multifunctional data electric power harmonic acquisition module | |
| CN204302385U (en) | A kind of measurement mechanism of apparatus insulated performance | |
| CN204719152U (en) | A kind of power distribution automation integration test pick-up unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELECTRIC POWER CO. STATE ELECTRIC NET CROP Effective date: 20120925 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120925 Address after: 213003 Jiangsu province Changzhou City Tianning District Bureau Street No. 27 Patentee after: Changzhou Power Supply Co, Jiangsu Provincial Power Corp. Patentee after: Jiangsu Electric Power Company Patentee after: State Grid Corporation of China Address before: 213003 Jiangsu province Changzhou City Tianning District Bureau Street No. 27 Patentee before: Changzhou Power Supply Co, Jiangsu Provincial Power Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20151119 |
|
| EXPY | Termination of patent right or utility model |