CN206132865U - Electric field detection circuitry around electrified insulator - Google Patents
Electric field detection circuitry around electrified insulator Download PDFInfo
- Publication number
- CN206132865U CN206132865U CN201621176553.3U CN201621176553U CN206132865U CN 206132865 U CN206132865 U CN 206132865U CN 201621176553 U CN201621176553 U CN 201621176553U CN 206132865 U CN206132865 U CN 206132865U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- operational amplifier
- foot
- electric field
- 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.)
- Active
Links
- 230000005684 electric field Effects 0.000 title claims abstract description 16
- 239000012212 insulator Substances 0.000 title abstract description 17
- 238000001514 detection method Methods 0.000 title abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses an electric field detection circuitry around electrified insulator, including electric capacity C1, electric capacity C2, resistance R1, resistance R2, resistance R3, resistance R4, operational amplifier U1, electric capacity C1's a termination electric field signal AD_IN, another termination resistance R1's of electric capacity C1 one end, electric capacity C1 plays the effect to initial signal filtering, resistance R1's the other end connects operational amplifier U1's the 2nd foot, resistance R2's one end respectively, and resistance R2's the other end connects operational amplifier U1's the 1st foot, electric capacity C2's one end respectively, another termination output signal AD_TEST of electric capacity C2, and resistance R1 and resistance R2 are used for the regulating circuit to gather the magnification, and electric capacity C2 plays secondary filter's effect, resistance R3's one end, resistance R4's one end connect operational amplifier U1's the 3rd foot respectively, and resistance R3's the other end connects 3.3V voltage, operational amplifier U1's the 4th foot respectively, another termination SGND of resistance R4, and resistance R3 and resistance R4 provide 12 offset voltage signal for operational amplifier U1.
Description
Technical field
This utility model is related to a kind of sub- surrounding electric field of charged insulating and detects circuit, belongs to Signal Collection Technology field.
Background technology
Composite insulator with its excellent anti-fouling flashover performance nationwide to be used widely, but in running
How to detect that its performance condition is a domestic or even worldwide difficult problem, it is a large amount of that this problem has even had influence on composite insulator
The technical policy promoted the use of.At present mostly power supply administration uses visual method detection, and this method is it cannot be guaranteed that detect
Defect inside composite insulator.As the composite insulator hanging net operation cycle is increasingly longer, inevitably synthesize
Insulator deteriorates accident.Along with the deterioration of composite insulator, there is the operating composite insulator in part to have brittle failure, becoming of puncturing
Gesture.Live detection is carried out to composite insulator using range estimation, can not be found and be hidden in below silicone rubber, glass fibre plug
Internal defect.Live detection is carried out to composite insulator with electric field method necessary.
Experiment results proved for a long time, the conductive defect of composite insulator and its insulation degradation of local can lead to
Cross and change along the field intensity that insulator chain is axially distributed and sensitively reflect.Therefore, it is necessary to propose a kind of using highly sensitive
The multinomial technology such as the electric-field sensor of degree and field strength distribution measurement analysis can effectively find that the insulation of composite insulator is bad
Change phenomenon, fill up the blank that composite insulator deteriorates online measuring technique.
Utility model content
The purpose of this utility model is the defect for overcoming prior art to exist, and proposes electricity around a kind of charged insulating
Field detection circuit.
This utility model is adopted the following technical scheme that：A kind of sub- surrounding electric field of charged insulating detects circuit, it is characterised in that
Including electric capacity C1, electric capacity C2, resistance R1, resistance R2, resistance R3, resistance R4, operational amplifier U1, a termination of the electric capacity C1
One end of another termination resistance R1 of electric field signal AD_IN, the electric capacity C1, the other end of the resistance R1 meets respectively institute
The 2nd foot, one end of the resistance R2 of operational amplifier U1 are stated, the other end of the resistance R2 connects respectively the operational amplifier
1st foot of U1, one end of the electric capacity C2, another termination output signal AD_TEST of the electric capacity C2；The one of the resistance R3
End, one end of the resistance R4 connect respectively the 3rd foot of the operational amplifier U1, and the other end of the resistance R3 meets respectively 3.3V
4th foot of voltage, the operational amplifier U1, another termination SGND of the resistance R4, the 11st of the operational amplifier U1 the
Foot meets SGND.
The beneficial effect that this utility model is reached：（1）This utility model compares for the electric field signal around insulator
It is faint, it is not enough to be detected instrument CPU Direct Recognitions, by the way that the electric field signal around insulator is filtered, is amplified, then filter
Process, input signal AD_IN1 can be set to the voltage range that CPU is capable of identify that；This utility model is defeated with existing signal
Enter voltage comparator to compare, circuit signal processing accuracy is high, good wave filtering effect, error is little, accuracy of detection is high.
Description of the drawings
Fig. 1 is circuit connection diagram of the present utility model.
Specific embodiment
This utility model is further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this
The technical scheme of utility model, and protection domain of the present utility model can not be limited with this.
Fig. 1 is circuit connection diagram of the present utility model.The utility model proposes a kind of sub- surrounding electric field of charged insulating
Detection circuit, it is characterised in that including electric capacity C1, electric capacity C2, resistance R1, resistance R2, resistance R3, resistance R4, operational amplifier
The one termination electric field signal AD_IN of U1, electric capacity C1, one end of another terminating resistor R1 of electric capacity C1, electric capacity C1 are played to initial
The effect of signal filtering；The other end of resistance R1 connects respectively the 2nd foot, one end of resistance R2 of operational amplifier U1, resistance R2's
The other end connects respectively the 1st foot, one end of electric capacity C2 of operational amplifier U1, another termination output signal AD_TEST of electric capacity C2,
Resistance R1 and resistance R2 is used to adjust circuit collection amplification, and electric capacity C2 plays a part of secondary filtering；One end of resistance R3,
One end of resistance R4 connects respectively the 3rd foot of operational amplifier U1, and the other end of resistance R3 connects respectively 3.3V voltages, operational amplifier
4th foot of U1, another termination SGND of resistance R4, the 11st foot of operational amplifier U1 meets SGND, resistance R3 and resistance R4 for fortune
Calculate the biasing voltage signal that amplifier U1 provides 1/2.
Operation principle of the present utility model：Electric field signal AD_IN1 is input into, by electric capacity C1, resistance R1, resistance R2, resistance
R3, resistance R4 and operational amplifier U1 are amplified, then are filtered process through electric capacity C2, reject burr, obtain smoother
Ac voltage signal AD_TEST, then lifting conversion is carried out to signal by increasing resistance, the control of the amplitude range of signal is existed
Within 3.3V, then deliver to CPU process.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model know-why, some improvement and deformation can also be made, these change
Enter and deform also to should be regarded as protection domain of the present utility model.
Claims (1)
1. a kind of sub- surrounding electric field of charged insulating detects circuit, it is characterised in that including electric capacity C1, electric capacity C2, resistance R1, resistance
R2, resistance R3, resistance R4, operational amplifier U1, a termination electric field signal AD_IN of the electric capacity C1, the electric capacity C1's is another
One end of the one termination resistance R1, the other end of the resistance R1 connects respectively the 2nd foot, the electricity of the operational amplifier U1
One end of resistance R2, the other end of the resistance R2 connects respectively the 1st foot of the operational amplifier U1, one end of the electric capacity C2,
Another termination output signal AD_TEST of the electric capacity C2；One end of the resistance R3, one end of the resistance R4 meet respectively institute
State the 3rd foot of operational amplifier U1, the other end of the resistance R3 connect respectively 3.3V voltages, the 4th of the operational amplifier U1 the
Foot, another termination SGND of the resistance R4, the 11st foot of the operational amplifier U1 meets SGND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621176553.3U CN206132865U (en) | 2016-10-27 | 2016-10-27 | Electric field detection circuitry around electrified insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621176553.3U CN206132865U (en) | 2016-10-27 | 2016-10-27 | Electric field detection circuitry around electrified insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206132865U true CN206132865U (en) | 2017-04-26 |
Family
ID=58576957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621176553.3U Active CN206132865U (en) | 2016-10-27 | 2016-10-27 | Electric field detection circuitry around electrified insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206132865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370941A (en) * | 2016-10-27 | 2017-02-01 | 国网江苏省电力公司检修分公司 | Electrified detection circuit for surrounding electric field of insulator |
-
2016
- 2016-10-27 CN CN201621176553.3U patent/CN206132865U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370941A (en) * | 2016-10-27 | 2017-02-01 | 国网江苏省电力公司检修分公司 | Electrified detection circuit for surrounding electric field of insulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954906B (en) | A kind of device and method for relay status detection | |
| CN106908671A (en) | A kind of non-intrusion type household loads intelligent detecting method and system | |
| CN104614608A (en) | Detection device and method for low voltage parallel electric arc fault | |
| CN205374588U (en) | Leakage current collection system | |
| CN102323508A (en) | Performance online detection device of induction type oxide arrester | |
| CN104684371B (en) | A kind of passive controlling magnetic field shielding device and its screen method | |
| CN206132865U (en) | Electric field detection circuitry around electrified insulator | |
| CN107765084B (en) | Universal voltage input power frequency signal frequency measurement system | |
| CN106771639B (en) | High pressure pole tower ground resistance on-line monitoring system | |
| CN106324329B (en) | Overvoltage self-adaptive identification method and system based on D-dot principle | |
| CN209446701U (en) | A kind of input grounding detection circuit for new-energy automobile charging pile | |
| CN102749523B (en) | Direct-current ground resistance detection circuit applied to photovoltaic inverter system | |
| CN204439784U (en) | A kind of voltage traveling wave sensor | |
| CN103412195A (en) | Electric power collective reading system and method for detecting thunder and lightning environment | |
| CN207067378U (en) | A kind of capacitance type potential transformer real-time detection apparatus based on PC platforms | |
| CN106370941A (en) | Electrified detection circuit for surrounding electric field of insulator | |
| CN206348466U (en) | Scale-deposit-preventing electrode examines water circuit | |
| CN202886479U (en) | Insulation resistance-to-ground sampling signal processing circuit for photovoltaic grid-connection system | |
| CN208313847U (en) | A kind of detector circuit for piston cleanliness detection | |
| CN203554405U (en) | Detection circuit of capacitive touch keys | |
| CN106019062B (en) | A kind of residual current coil breakage detection device and its detection method | |
| CN206557295U (en) | A kind of line resistance resistance detects circuit | |
| CN206348397U (en) | The sub- surrounding space electric field sensing circuits of high voltage charged insulation | |
| CN205720392U (en) | Non-contact zero live wire detects warning circuit and instrument automatically | |
| CN204495914U (en) | A kind of electromagnetic wave detection device based on sensing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee after: State Grid Corporation of China Patentee after: National network Jiangsu Electric Power Co., Ltd. maintenance branch Address before: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee before: State Grid Corporation of China Patentee before: State Grid Jiangsu Electric Power Company Maintenance Branch Company |