CN2085971U - Tester for hanging isolator of high-tension line - Google Patents
Tester for hanging isolator of high-tension line Download PDFInfo
- Publication number
- CN2085971U CN2085971U CN 91203792 CN91203792U CN2085971U CN 2085971 U CN2085971 U CN 2085971U CN 91203792 CN91203792 CN 91203792 CN 91203792 U CN91203792 U CN 91203792U CN 2085971 U CN2085971 U CN 2085971U
- Authority
- CN
- China
- Prior art keywords
- circuit
- tension line
- mould
- isolator
- tester
- 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.)
- Withdrawn
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model provides a tester for hanging isolator of high-tension line. The tester for hanging isolator of high-tension line comprises a full wave circuit with anti-jamming circuit, an A/D convert cable run and a display circuit. The utility model is easy and simple to handle, the extrinsic factor has small effect on the measurement result, and the certainty of measurement is high, and the response is well through trial employment.
Description
The utility model belongs to a kind of voltage measuring apparatus, especially to the detection of the suspended insulator that is used for high-tension line.
The suspended insulator that is used for ultra-high-tension power transmission line, after long-time the use, the short circuit of may losing efficacy causes the accident.Detection to suspended insulator is so at present, one end of two metal bars is touched the steel cap of the upper and lower both sides of insulator respectively, regulate the gap between these two metal bar other ends again, the size in this gap during according to generation electric discharge phenomena (discharging sound or electric spark are arranged) is determined this insulator voltage difference of both sides up and down by tabling look-up.Influenced greatly by master, objective factor with this measurement device, precision is low, easily causes erroneous judgement, misjudgement.
The purpose of this utility model provides a kind of automaticity height, and measurement result is subjected to ectocine little, high-tension line suspended insulator pick-up unit easy and simple to handle.
The utility model comprises the full-wave rectifying circuit 11 of being with anti-jamming circuit, and it carries out rectification with input voltage; Mould/number conversion circuit 12, it becomes digital signal with the analog signal conversion after rectification; Display circuit 13, it receives through the signal of mould/number conversion and shows measurement result.Because this device is worked under hyperbaric environment, the ground capacitance that device itself exists can not be ignored, and the common mode voltage of input end will produce a very large impact measurement result like this, so that true value may be covered fully.For eliminating this influence, need set up anti-jamming circuit, promptly at diode D as Fig. 2 rectification circuit
1Two ends parallel resistance R
3, diode D
3Two ends parallel resistance R
4
The utility model is described in further detail in conjunction with the accompanying drawings.
Fig. 1 is the utility model block scheme.
Fig. 2 is a rectifying part of the present utility model.
Fig. 2 provides an embodiment of the present utility model in conjunction with Fig. 3.
Among Fig. 1,11, the band anti-jamming circuit full-wave rectifying circuit 12, mould/number conversion circuit 13, display circuit
Among Fig. 2, R
1, R
2, R
3, R
4, R
5Be resistance, D
1, D
2, D
3, D
4Be diode, C
0Be electric capacity, A, B are voltage input end, and X, Y end links to each other with the end of the same name of Fig. 3 circuit and constitutes an embodiment of the present utility model.
Among Fig. 3, R
6, R
7, R
8, R
9, R
10Be resistance, C
1, C
2, C
3, C
4, C
5Be electric capacity, K is a switch, and E is a power supply, IC
1Be mould/number conversion circuit, IC
2Be display circuit, IC
1In number designation be the chip pin sequence number.
Rectification circuit of the present utility model adopts special symmetric circuit, and the high pressure interfering signal is the common mode signal, and measured signal is difference mode signal. During measurement A, B end is contacted respectively the steel cap of the upper and lower both sides of tested insulator, for common mode voltage, can not ignore the direct-to-ground capacitance of device itself, thereby produce common mode disturbances, and because resistance R3、R
4Existence, greatly reduce common mode voltage to the impact (namely reducing common mode disturbances) of measurement result. In the circuit, resistance R1＝R
2，R
3＝R
4，R
1Value is at 100R3～200R
3，R
3＞＞R
5。
The utility model is easy to use, need not manual intervention in operating process, is subjected to extraneous factor affecting little, shows that the result adopts digital direct-reading type, and is more accurate and visual.
Fig. 2 provides an embodiment of the present utility model in conjunction with Fig. 3.Each element reference value is as follows:
R
1=R
2=500 megaohms, R
3=R
4=5 megaohms, R
5=40 kilo-ohms, R
6=47 kilo-ohms, R
7=100 kilo-ohms, R
8=10 kilo-ohms, R
9=18 kilo-ohms, R
10=100 kilo-ohms, C
0=30uF, C
1=0.22uF, C
2=0.47uF, C
3=1000pF, C
4=0.1uF, C
5=100pF, the voltage of power supply E are 9V.IC
1Be mould/number conversion chip CC
7106, IC
2Be LCD panel VI-302-1.
Closing Switch K during use touches the steel cap of the upper and lower both sides of tested insulator respectively with A, B two ends, and voltage signal shows after rectification and mould/number conversion like this, thereby obtains the voltage difference at these insulator two ends.Should be worth then with the upper and lower both sides of contiguous insulator voltage difference and compare,, illustrate that this insulator was normal if the amplitude that differs is little, otherwise undesired.
Claims (3)
1, a kind of high-tension line suspended insulator detector is characterized in that it comprises
A, input signal is carried out the full-wave rectifying circuit 11 of the band anti-jamming circuit of rectification, described anti-jamming circuit is promptly at the diode D of full-wave rectifying circuit
1Last parallel resistance R
3, diode D
3Last parallel resistance R
4, and R
3=R
4, R
1=R
2,
B, will the analog signal conversion after rectification become the mould/number conversion circuit 12 of digital signal,
C, receive the output signal of mould/number conversion circuit 12 and show the display circuit 13 of final measurement.
2,, it is characterized in that described mould/number conversion circuit 12 adopts integrated circuit (IC) chip CC according to the high-tension line suspended insulator detector of claim 1
7106
3,, it is characterized in that described display circuit 13 adopts LCD panel VI-302-1 according to the high-tension line suspended insulator detector of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203792 CN2085971U (en) | 1991-03-16 | 1991-03-16 | Tester for hanging isolator of high-tension line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203792 CN2085971U (en) | 1991-03-16 | 1991-03-16 | Tester for hanging isolator of high-tension line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085971U true CN2085971U (en) | 1991-10-02 |
Family
ID=4914020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91203792 Withdrawn CN2085971U (en) | 1991-03-16 | 1991-03-16 | Tester for hanging isolator of high-tension line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640020A (en) * | 2013-11-27 | 2014-03-19 | 武汉科迪奥电力科技有限公司 | Insulator detecting robot |
| CN110456270A (en) * | 2019-08-09 | 2019-11-15 | 清华大学 | A kind of motor insulated on-line monitoring method and device |
-
1991
- 1991-03-16 CN CN 91203792 patent/CN2085971U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640020A (en) * | 2013-11-27 | 2014-03-19 | 武汉科迪奥电力科技有限公司 | Insulator detecting robot |
| CN103640020B (en) * | 2013-11-27 | 2016-11-23 | 武汉科迪奥电力科技有限公司 | Insulator detecting robot |
| CN110456270A (en) * | 2019-08-09 | 2019-11-15 | 清华大学 | A kind of motor insulated on-line monitoring method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |