CN203930036U - A kind of three-phase overvoltage protector revise instrument - Google Patents
A kind of three-phase overvoltage protector revise instrument Download PDFInfo
- Publication number
- CN203930036U CN203930036U CN201420261549.1U CN201420261549U CN203930036U CN 203930036 U CN203930036 U CN 203930036U CN 201420261549 U CN201420261549 U CN 201420261549U CN 203930036 U CN203930036 U CN 203930036U
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- high pressure
- overvoltage protector
- pressure generator
- sampling apparatus
- housing
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- 230000001012 protector Effects 0.000 title claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 22
- 238000012795 verification Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009365 direct transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical group [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a kind of three-phase overvoltage protector revise instrument; comprise housing and be arranged on power supply, the high pressure generator in housing; in housing, be also provided with the sampling apparatus, comparison means and the display device that connect by signal wire successively; high pressure generator, sampling apparatus, comparison means and display device are connected with power supply respectively; surface of shell arranges function panel, and function panel comprises power interface, switch, generation button, display panel, input port and output port.The utility model both can verification over-pressure safety device in the accuracy of thunder-and-lightning counter and current sensing means; the action situation of all right verification lightning arrester; carry out three-phase measurement simultaneously; save checking time; easy to operate; intuitive display, can meet rapidly test demand, has improved unit check personnel's work efficiency.
Description
Technical field
The utility model belongs to overvoltage protection calibration equipment technical field, particularly a kind of three-phase overvoltage protector revise instrument.
Background technology
In the transformer and distribution power station of 10KV to 35KV, for the device of overvoltage protection, mostly be lightning arrester and supporting surveying instrument thereof, wherein, lightning arrester mostly is zinc paste formula, and surveying instrument comprises thunder-and-lightning counter and current sensing means.Breakdown protection effect when lightning arrester plays superpotential or excess current; thunder-and-lightning counter and current sensing means are at the action frequency of lightning arrester reflection lightning arrester in service and the numerical value of total current; the protection of concentrated expression lightning arrester and insulation status; therefore; before coming into operation or regularly all need over-pressure safety device to carry out verification; comprise three-phase lightning protector is detected, and thunder-and-lightning counter and reometer are carried out to verification.But, present measuring means is more single, and the cooperation of the multiple testing instruments of needs, especially only have at every turn and carry out verification to single-phase, only three-phase lightning protector just needs to measure for three times, has both wasted test period, is unfavorable for again the contrast of three test figures, detection needs the time long, is unfavorable for the timely power transmission of equipment.
Utility model content
The deficiency that the utility model exists for prior art; a kind of three-phase overvoltage protector revise instrument is provided; both can verification thunder-and-lightning counter and the accuracy of current sensing means; the action situation of all right verification lightning arrester; carry out three-phase measurement simultaneously; save checking time, improved verification efficiency.
For solving the problems of the technologies described above; the technical solution of the utility model is: a kind of three-phase overvoltage protector revise instrument; comprise housing and be arranged on power supply, the high pressure generator in housing; in housing, be also provided with the sampling apparatus, comparison means and the display device that connect by signal wire successively, described high pressure generator, sampling apparatus, comparison means and display device are connected with power supply respectively.
Described surface of shell arranges function panel, described function panel comprises power interface, switch, generation button, display panel, input port and output port, described power interface is connected with described power supply respectively with switch, described generation button is connected with described high pressure generator, described input port connects described high pressure generator output terminal, and described output port connects described sampling apparatus input end.
Described input port and output port are set to respectively 3 groups.
Described sampling apparatus is high-precision difference formula current transformer.
Described comparison means adopts single-chip microcomputer.
Described display device is the liquid crystal matrix formula of 128 × 64 dot matrix.
When equipment uses; first by device to be measured; it is over-pressure safety device access device; the three-phase input end of over-pressure safety device accesses respectively the input port of this equipment; connect the output terminal of high pressure generator; the three-phase output end of over-pressure safety device accesses respectively corresponding output port, connects the input end of sampling apparatus.
Power supply in housing is by external civil power supply source, can be divided into two parts, a part completes the direct transmission of civil power, be embodied as high pressure generator supply source, another part is the PC power source of switching mode, power input is still civil power, but can as required line voltage be converted to direct voltage source output, thereby meets the supply source demand of disparate modules in device.
After opening switch, the power connection of modules, by the generation button on function panel, start high pressure generator action, carry out overvoltage simulation test: high pressure generator electric signal is after device to be measured, obtain testing electric signal, by the current signal in current sampling device acquisition test electric signal, and current signal is sent into comparison means, complete the contrast of test current signal and standard current signal, thereby judge whether to exist fault, if fault, by comparison means output alarm signal, display device receives the test current signal that comparison means sends, generator action frequency and alerting signal, on display panel, show test current value, action frequency value and the instruction of reporting to the police.Because test is that three-phase carries out simultaneously; so the indicating value of display panel is also divided into three tunnels; operator can be according to the data on display panel and the instruction of reporting to the police; compare with thunder-and-lightning counter in tested over-pressure safety device and the indicating value of reometer, judge whether rapidly to exist fault and which to have mutually fault.
Three-phase overvoltage protector revise instrument of the present utility model can be measured three-phase overvoltage protective device simultaneously; without detecting the phase that is connected, save tie-time and test period, be beneficial to again the contrast of three test figures; detection needs the time very short, is convenient to the timely power transmission of equipment.Meanwhile, also can verification to the action frequency of three-phase overvoltage protective device, measure lightning current by time whether can move, and check and correction action frequency, easy to operate, intuitive display, can meet rapidly test demand, has improved unit check personnel's work efficiency.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is function panel figure of the present utility model.
Fig. 2 is measuring principle figure of the present utility model.
Embodiment
Embodiment
As shown in Figure 1 and Figure 2; a kind of three-phase overvoltage protector revise instrument; comprise housing 7 and be arranged on power supply 6, the high pressure generator 2 in housing; in housing, be also provided with the sampling apparatus 3, comparison means 4 and the display device 5 that connect by signal wire successively, described high pressure generator 2, sampling apparatus 3, comparison means 4 and display device 5 are connected with power supply 6 respectively.
Housing 7 surfaces arrange function panel, described function panel comprises power interface 1, switch 14, generation button 10, display panel 11, input port 12 and output port 13, owing to being that three-phase is measured simultaneously, so input port and output port are set to respectively 3 groups, power interface 1 is connected with power supply 6 respectively with switch 14, button 10 occurs and be connected with high pressure generator 2, input port 12 connects high pressure generator 2 output terminals, and output port 13 connects sampling apparatus 3 input ends.
Sampling apparatus is high-precision difference formula current transformer, and the corresponding three-phase of mutual inductor can be set to three groups, is preferably TLI4970 type current transformer, and it utilizes difference measurement principle, can suppress the interference that bring external magnetic field, and therefore measured deviation is extremely low, is only 25mA; Meanwhile, this current transformer has adopted the structure of independently measuring temperature and mechanical stress, can realize stability and the high-precision requirement of long-term measurement.
Comparison means adopts single-chip microcomputer, be preferably the ATMEGAl62 being used in conjunction with TLI4970 type current transformer, can make full use of the comparison and reception transfer function of this single-chip microcomputer, the pulse output pin of three groups of current transformers is connected with three external interrupt pins of ATMEGAl62 respectively, in the time having external interrupt, ATMEGAl62 reads the current effective value of every group of current transformer in turn, and the data of reading are processed, with single-chip microcomputer in the standard current value that stores compare, and comparative result is stored in single-chip microcomputer comparand register, comparand register is 24 bit registers without sign bit intrinsic in single-chip microcomputer, the ratio of storage current measurement value and standard journey, while showing at ratio the coverage error that exceedes 10 centered by 1, single-chip microcomputer is output alarm signal.
It is the liquid crystal matrix formula of 128 × 64 dot matrix that display device is preferably, display panel 11 is divided into two parts, a part is three-phase test electric current display panel 8, a part is action frequency and warning indicated number panel 9, be preferably LCDl2864, in addition, carry out data interaction for convenient with host computer, display panel also can be expanded 485 bus interface, preferably the MAX485 type bus converter of MAXIM company.
Power supply in housing is by external civil power supply source, the external 220V power lead of power interface, can be divided into two parts, a part completes the direct transmission of alternating current 220V voltage, is embodied as high pressure generator supply source, the PC power source that another part is switching mode, power input is still civil power, but can as required line voltage be converted to direct voltage source output, as ± 12V, ± 5V, ± 3.3V, thus meet the supply source demand of disparate modules in device.
When equipment uses; first by device to be measured; it is over-pressure safety device access device; the three-phase input end of over-pressure safety device accesses respectively the input port of this equipment; connect the output terminal of high pressure generator; the three-phase output end of over-pressure safety device accesses respectively corresponding output port, connects the input end of sampling apparatus.After opening switch, the power connection of modules, by the generation button on function panel, start high pressure generator action, carry out overvoltage simulation test: high pressure generator electric signal is after device to be measured, obtain testing electric signal, by the current signal in current sampling device acquisition test electric signal, and current signal is sent into comparison means, complete the contrast of test current signal and standard current signal, thereby judge whether to exist fault, if fault, by comparison means output alarm signal, display device receives the test current signal that comparison means sends, generator action frequency and alerting signal, on display panel, show test current value, action frequency value and the instruction of reporting to the police.Because test is that three-phase carries out simultaneously; so the indicating value of display panel is also divided into three tunnels; operator can be according to the data on display panel and the instruction of reporting to the police; compare with thunder-and-lightning counter in tested over-pressure safety device and the indicating value of reometer, judge whether rapidly to exist fault and which to have mutually fault.
The above, be only preferred embodiment of the present utility model, not the utility model done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. a three-phase overvoltage protector revise instrument; comprise housing and be arranged on power supply, the high pressure generator in housing; it is characterized in that: in housing, be also provided with the sampling apparatus, comparison means and the display device that connect by signal wire successively, described high pressure generator, sampling apparatus, comparison means and display device are connected with power supply respectively.
2. three-phase overvoltage protector revise instrument as claimed in claim 1; it is characterized in that: described surface of shell arranges function panel; described function panel comprises power interface, switch, generation button, display panel, input port and output port; described power interface is connected with described power supply respectively with switch; described generation button is connected with described high pressure generator; described input port connects described high pressure generator output terminal, and described output port connects described sampling apparatus input end.
3. three-phase overvoltage protector revise instrument as claimed in claim 2, is characterized in that: described input port and output port are set to respectively 3 groups.
4. three-phase overvoltage protector revise instrument as claimed in claim 1, is characterized in that: described sampling apparatus is high-precision difference formula current transformer.
5. three-phase overvoltage protector revise instrument as claimed in claim 1, is characterized in that: described comparison means adopts single-chip microcomputer.
6. three-phase overvoltage protector revise instrument as claimed in claim 2, is characterized in that: described display device is the liquid crystal matrix formula of 128 × 64 dot matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261549.1U CN203930036U (en) | 2014-05-22 | 2014-05-22 | A kind of three-phase overvoltage protector revise instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261549.1U CN203930036U (en) | 2014-05-22 | 2014-05-22 | A kind of three-phase overvoltage protector revise instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203930036U true CN203930036U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261549.1U Expired - Fee Related CN203930036U (en) | 2014-05-22 | 2014-05-22 | A kind of three-phase overvoltage protector revise instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN203930036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061349A (en) * | 2018-08-08 | 2018-12-21 | 国网湖南省电力有限公司 | A kind of 10 KV lightning arrester three-phase test devices |
| CN109900982A (en) * | 2018-02-13 | 2019-06-18 | 菲尼克斯电气公司 | A kind of test macro |
-
2014
- 2014-05-22 CN CN201420261549.1U patent/CN203930036U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900982A (en) * | 2018-02-13 | 2019-06-18 | 菲尼克斯电气公司 | A kind of test macro |
| CN109061349A (en) * | 2018-08-08 | 2018-12-21 | 国网湖南省电力有限公司 | A kind of 10 KV lightning arrester three-phase test devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20141105 Termination date: 20170522 |
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| CF01 | Termination of patent right due to non-payment of annual fee |