CN209086334U - A kind of high sensitivity insulator electric field detection device - Google Patents
A kind of high sensitivity insulator electric field detection device Download PDFInfo
- Publication number
- CN209086334U CN209086334U CN201821727423.3U CN201821727423U CN209086334U CN 209086334 U CN209086334 U CN 209086334U CN 201821727423 U CN201821727423 U CN 201821727423U CN 209086334 U CN209086334 U CN 209086334U
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- resistance
- electric field
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- operational amplifier
- capacitor
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- Testing Relating To Insulation (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a kind of highly sensitive insulator electric field detection devices, electric field strength acquisition device, optical receiver, converter, the data collecting card including cabinet and being successively electrically connected.The cabinet side is hinged with chamber door.Electric field strength acquisition device output optical signal, then it is changed into electric signal, reduce the violent corona interference of insulator high-voltage end；The present apparatus detects electric field strength, sensitive height by the combination of bridge circuit and amplifier；Measurement, the record of the electric field strength of different directions are realized, convenient for analyzing the direction character of electric field；The present apparatus automatically records electric field testing result, compares convenient for analysis, is also convenient for building defects of insulator database, further appreciates that influence of the defects of insulator to ultra-high-tension power transmission line to researcher.
Description
Technical field
The utility model belongs to electric field measurement field, and in particular to a kind of high sensitivity insulator electric field detection device.
Background technique
In the prior art, the detection of insulator electric field generally uses electric field method that can be effectively detected.Currently, having very much
Studies have shown that can directly reflect the insulation status of insulator by the field distribution of measurement insulator, the interior exhausted of insulator is found out
Edge defect.Therefore, by detecting insulator electric field performance can judge whether interior insulator is defective.
When carrying out insulator electric field detection, electric field strength has directionality, and the measurement of electric field is vulnerable to many factors
Interference.Therefore, insulator electric field strength signal is not easy to acquire and analyze.
Summary of the invention
The purpose of this utility model is to solve the above problems, and provides a kind of highly sensitive insulator electric field detection device, spirit
Sensitivity is high, can detect the electric field strength of different directions, anti-interference, and electric field strength data automatically save, and compares convenient for analysis.
The technical solution of the utility model is a kind of highly sensitive insulator electric field detection device, including cabinet and successively electricity
Property connection electric field strength acquisition device, optical receiver, converter, data collecting card.
The electric field strength acquisition device includes the bridge circuit of resistance R1, resistance R2, resistance R3, resistance R4 composition, electricity
Appearance C1 is in parallel with resistance R1, and capacitor C2 is in parallel with resistance R2, and capacitor C3 is in parallel with resistance R3, and capacitor C4 is in parallel with resistance R4, electricity
Resistance R1 connect place extraction wire with resistance R2, and as port A, resistance R3 connect place extraction wire with resistance R4, as end
Mouth B, operational amplifier U1 normal phase input end are connect with port B, and operational amplifier U1 inverting input terminal is connect with port A；Operation
Amplifier U1 output end is connect through resistance R5 with operational amplifier U2 inverting input terminal, the both ends slide rheostat RP1 respectively with fortune
Calculate inverting input terminal, output end connection, the sliding contact of slide rheostat RP1 and the reverse phase of operational amplifier U2 of amplifier U2
Input terminal connection, the sliding contact of slide rheostat RP2 are connect through resistance R6 with the normal phase input end of operational amplifier U2, are slided
One end of rheostat RP2 is grounded, and the other end is connect with the negative power end of operational amplifier U2, and resistance R7 connects with optical transmitter,
The resistance R7 other end is connect with operational amplifier U2 output end, the cathode ground connection of optical transmitter；Resistance R1 connects it with resistance R3
Place is connect with power supply VCC, is connect in place of resistance R2 and resistance R4 connection with power supply VEE；Capacitor C1 includes 2 capacitance electrodes.
The capacitance electrode includes arc-shaped electrode piece, and capacitance electrode one end is provided with ear block, and ear block is equipped with mounting hole, electricity
Hold electrode to connect through the pin in mounting hole with cabinet；Capacitance electrode one end is provided with connecting hole, and capacitance electrode is through tight in connecting hole
Firmware and conducting wire are connected to electric field strength acquisition device circuit；Capacitance electrode can be rotated around the pin in mounting hole.
The cabinet side is hinged with chamber door.
The utility model has the beneficial effects that
(1) it is violent to reduce insulator high-voltage end for electric field strength acquisition device output optical signal, then be changed into electric signal
Corona interference；
(2) present apparatus detects electric field strength, sensitive height by the combination of bridge circuit and amplifier；
(3) measurement, the record of the electric field strength of different directions are realized, convenient for analyzing the direction character of electric field；
(4) present apparatus automatically records electric field testing result, compares convenient for analysis, is also convenient for building defects of insulator data
Library further appreciates that influence of the defects of insulator to ultra-high-tension power transmission line to researcher.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is 2 circuit diagram of electric field strength acquisition device.
Fig. 3 is the front view of capacitance electrode 3.
Fig. 4 is the top view of capacitance electrode 3.
Specific embodiment
As shown in Figure 1, a kind of high sensitivity insulator electric field detection device, the electricity that including cabinet 1 and is successively electrically connected
Field intensity acquisition device 2, optical receiver 5, converter 6, data collecting card 7.1 side of cabinet is hinged with chamber door.
As shown in Fig. 2, electric field strength acquisition device 2 includes the bridge-type of resistance R1, resistance R2, resistance R3, resistance R4 composition
Circuit, capacitor C1 is in parallel with resistance R1, and capacitor C2 is in parallel with resistance R2, and capacitor C3 is in parallel with resistance R3, capacitor C4 and resistance R4
Parallel connection, resistance R1 connect place extraction wire with resistance R2, and as port A, resistance R3 connect place extraction wire with resistance R4,
As port B, operational amplifier U1 normal phase input end is connect with port B, and operational amplifier U1 inverting input terminal and port A connect
It connects；Operational amplifier U1 output end is connect through resistance R5 with operational amplifier U2 inverting input terminal, the both ends slide rheostat RP1 point
It is not connect with the inverting input terminal of operational amplifier U2, output end, the sliding contact and operational amplifier U2 of slide rheostat RP1
Inverting input terminal connection, the sliding contact of slide rheostat RP2 connects through the normal phase input end of resistance R6 and operational amplifier U2
It connects, one end ground connection of slide rheostat RP2, the other end is connect with the negative power end of operational amplifier U2, and resistance R7 and light are sent
Device 4 is connected, and the resistance R7 other end is connect with operational amplifier U2 output end, the cathode ground connection of optical transmitter 4；Resistance R1 and resistance
It connect in place of R3 connection with power supply VCC, is connect in place of resistance R2 and resistance R4 connection with power supply VEE；Capacitor C1 includes 2 electricity
Hold electrode 3.Resistance R1, resistance R2, resistance R3, the resistance value of resistance R4 are identical；The capacitance of capacitor C2, capacitor C3, capacitor C4
It is identical.
As shown in Figure 3 and Figure 4, capacitance electrode 3 includes arc-shaped electrode piece 31, and 3 one end of capacitance electrode is provided with ear block 32,
Ear block 32 is equipped with mounting hole 34, and capacitance electrode 3 is connect through the pin in mounting hole 34 with cabinet 1；3 one end of capacitance electrode is provided with company
Hole 33 is connect, capacitance electrode 3 is connected to 2 circuit of electric field strength acquisition device through fastener in connecting hole 33 and conducting wire；Capacitance electrode 3
It can be rotated around the pin in mounting hole 34.
Optical transmitter 4 be Lite-On HSDL-4261 it is infrared/UV/ visible light emitter.
Optical receiver 5 uses FEMTOFWPR-20 series optical receiver.
6 model AD7712 of converter.
7 model OLP-9233 PCI high-accuracy data acquisition module of data collecting card.
The working principle of the device of above structure: when measurement electric field, being tested electric field influences 2 capacitance electrodes 3 of capacitor C1
Electrode slice 31 distribution of charges, port A, the port B of 2 circuit of electric field strength acquisition device form potential difference, and potential difference is through transporting
It calculates amplifier U1 to detect, amplify through operational amplifier U2, and sent through optical transmitter 4, optical receiver 5 receives, converter 6
Digital signal is converted to, the electric field strength numerical value that digital signal is tested electric field is stored and saved by data collecting card 7；Rotate capacitor
Electrode 3 repeatedly carries out electric field intensity measuremenrt, it can be achieved that different directions when capacitance electrode 3 is in different angle in cabinet 1
The measurement of electric field strength.
Claims (3)
1. a kind of high sensitivity insulator electric field detection device, including cabinet (1), which is characterized in that further include sequentially connected
Electric field strength acquisition device (2), optical receiver (5), converter (6), data collecting card (7)；
The electric field strength acquisition device (2) includes the bridge circuit of resistance R1, resistance R2, resistance R3, resistance R4 composition, capacitor
C1 is in parallel with resistance R1, and capacitor C2 is in parallel with resistance R2, and capacitor C3 is in parallel with resistance R3, and capacitor C4 is in parallel with resistance R4, resistance
R1 connect place extraction wire with resistance R2, and as port A, resistance R3 connect place extraction wire with resistance R4, as port
B, operational amplifier U1 normal phase input end are connect with port B, and operational amplifier U1 inverting input terminal is connect with port A；Operation is put
Big device U1 output end is connect through resistance R5 with operational amplifier U2 inverting input terminal, the both ends slide rheostat RP1 respectively with operation
The inverting input terminal of amplifier U2, output end connection, the reverse phase of the sliding contact and operational amplifier U2 of slide rheostat RP1 are defeated
Enter end connection, the sliding contact of slide rheostat RP2 is connect through resistance R6 with the normal phase input end of operational amplifier U2, and sliding becomes
One end ground connection of device RP2 is hindered, the other end is connect with the negative power end of operational amplifier U2, and resistance R7 connects with optical transmitter (4),
The resistance R7 other end is connect with operational amplifier U2 output end, the cathode ground connection of optical transmitter (4)；Resistance R1 is connected with resistance R3
Place is connect with power supply VCC, is connect in place of resistance R2 and resistance R4 connection with power supply VEE；Capacitor C1 includes 2 capacitance electrodes
(3)。
2. high sensitivity insulator electric field detection device according to claim 1, which is characterized in that capacitance electrode (3) packet
It includes arc-shaped electrode piece (31), capacitance electrode (3) one end is provided with ear block (32), and ear block (32) is equipped with mounting hole (34), capacitor
Electrode (3) is connect through the pin in mounting hole (34) with cabinet (1)；Capacitance electrode (3) one end is provided with connecting hole (33), capacitor electricity
Pole (3) is connected to electric field strength acquisition device (2) circuit through fastener in connecting hole (33) and conducting wire, and capacitance electrode (3) can be around
Pin rotation in mounting hole (34).
3. high sensitivity insulator electric field detection device according to claim 2, which is characterized in that the cabinet (1) one
Side is hinged with chamber door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727423.3U CN209086334U (en) | 2018-10-24 | 2018-10-24 | A kind of high sensitivity insulator electric field detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727423.3U CN209086334U (en) | 2018-10-24 | 2018-10-24 | A kind of high sensitivity insulator electric field detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209086334U true CN209086334U (en) | 2019-07-09 |
Family
ID=67120497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821727423.3U Expired - Fee Related CN209086334U (en) | 2018-10-24 | 2018-10-24 | A kind of high sensitivity insulator electric field detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209086334U (en) |
-
2018
- 2018-10-24 CN CN201821727423.3U patent/CN209086334U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20201024 |
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| CF01 | Termination of patent right due to non-payment of annual fee |