CN107966602A - A kind of residual voltage harvester - Google Patents
A kind of residual voltage harvester Download PDFInfo
- Publication number
- CN107966602A CN107966602A CN201610906838.6A CN201610906838A CN107966602A CN 107966602 A CN107966602 A CN 107966602A CN 201610906838 A CN201610906838 A CN 201610906838A CN 107966602 A CN107966602 A CN 107966602A
- Authority
- CN
- China
- Prior art keywords
- residual voltage
- pin
- wiring board
- isolated amplifier
- abc
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Abstract
The invention discloses a kind of residual voltage harvester, it is characterized in that：Residual voltage sensor is fixed on installation chassis, and a conducting wire is connected to the ABC three-phases galvanic circle of switch respectively, passes through 4 mounting holes（16）Wiring board is fixed on switch internal, DC24V voltages are applied to the pin 24V+ and pin 24V of wiring board, the pin E of wiring board is grounded, prevent wiring board electric leakage from injuring the person and equipment, secondary wiring is connected with the pin T and pin N of wiring board respectively, circuit ABC three-phase voltages are converted into residual voltage and are first exported after capacitor filtering to isolated amplifier by residual voltage sensor, the extraneous High-frequency Interference of isolated amplifier isolation at the same time amplifies residual voltage signal, after capacitor filtering, by pin SO+ and pin SO by residual voltage signal output to control terminal, in signal input and output loop a TVS pipe in parallel, effectively absorb the pulse that isolated amplifier can be caused to damage, ensure the safe operation of isolated amplifier.
Description
Technical field
The present invention relates to a kind of residual voltage harvester.
Background technology
At present, controller is required to be grounded direction protection for state's net, scheme has the following two kinds：First, directly by adopting
Collect the residual voltage output of threephase potential transformer, but this scheme cost price is too high；2nd, sensed by gathering residual voltage
The voltage output of device, this scheme cost is relatively low, but because of the residual voltage value very little of current residual voltage sensor output, and
Easily disturbed by extraneous high-frequency signal, cause control terminal not collect voltage or collection information inaccuracy, so that control terminal
Can not reliably controlling switch separating brake.
The content of the invention
The object of the present invention is to provide a kind of residual voltage harvester, it is characterized in that：Residual voltage sensor（2）By line
Road ABC three-phase voltages are converted into residual voltage and export to isolated amplifier（14）, isolated amplifier（14）The external world can be effectively isolated
High-frequency Interference, and will be exported after the small residual voltage value amplification collected to control terminal, so as to ensure that control terminal is reliable
Run on ground.
To achieve the above object, the present invention provides following technical solution：
A kind of residual voltage harvester, it is characterized in that：By the residual voltage sensor that material is epoxy resin outsourcing silicon rubber
（2）Successively installation chassis is equidistantly fixed on no less than 200mm according to phase spacing（3）On, a conducting wire（1）Switch is connected to respectively
ABC three-phases galvanic circle, pass through 4 mounting holes（16）By wiring board（12）Switch internal is fixed on, to wiring board（12）'s
Pin 24V+（6）With pin 24V-（7）Apply DC24V voltages, by wiring board（12）Pin E（9）Ground connection, by secondary wiring
（4）Respectively with wiring board（12）Pin T（10）With pin N（11）It is connected, residual voltage sensor（2）By circuit ABC three-phases
Voltage conversion is into residual voltage first through capacitance（13）Exported after filtering to isolated amplifier（15）, isolated amplifier（15）Isolation is outer
Boundary's High-frequency Interference at the same time amplifies residual voltage signal, by capacitance（13）After filtering, pass through pin SO+（5）With pin SO-
（8）By residual voltage signal output to control terminal, in signal input and an output loop TVS pipe in parallel（14）, effectively
Absorption can cause isolated amplifier（15）The pulse of damage.
The present invention provides a kind of residual voltage harvester, residual voltage sensor（2）And wiring board（12）Coordinate, isolation
Extraneous High-frequency Interference is exported to control terminal after residual voltage signal is amplified at the same time, is grounded direction protection, ensures control
Terminal reliably controlling switch separating brake.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention.
Attached drawing 2 is wiring board schematic diagram of the invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
In figure：1st, a conducting wire 2, residual voltage sensor 3, installation chassis 4, secondary wiring 5, pin SO+
6th, pin 24V+ 7, pin 24V- 8, pin SO- 9, pin E 10, pin T 11, pin N 12, wiring board
13rd, capacitance C 14, TVS pipe 15, isolated amplifier 16, mounting hole
As shown in Figs. 1-2, the residual voltage sensor of the invention by material for epoxy resin outsourcing silicon rubber（2）Successively according to
Phase spacing is equidistantly fixed on installation chassis no less than 200mm（3）On, a conducting wire（1）The ABC three-phases for being connected to switch respectively are led
Electrical circuit, passes through 4 mounting holes（16）By wiring board（12）Switch internal is fixed on, to wiring board（12）Pin 24V+（6）
With pin 24V-（7）Apply DC24V voltages, isolated amplifier（15）Supply pin 23 connect+24V power supplys with 24 feet, will be secondary
Conducting wire（4）Respectively with wiring board（12）Pin T（10）With pin N（11）It is connected, by pin T（10）With pin N（11）Series connection
Capacitance C（13）Afterwards respectively with isolated amplifier（15）Signal input pin 11 be connected with 12 feet, by wiring board（12）Pin E
（9）Ground connection, prevents wiring board（12）Electric leakage, injures the person and equipment, residual voltage sensor（2）By circuit ABC three-phase voltages
Residual voltage is converted into first through capacitance C（13）Exported after filtering out different frequency range ripple to isolated amplifier（15）, isolated amplifier
（15）The extraneous High-frequency Interference of isolation at the same time amplifies the residual voltage signal collected, by isolated amplifier（15）Signal output
1 and 3 foot of foot exports, through capacitance（13）After filtering, pass through wiring board（12）Pin SO+（5）With pin SO-（8）By zero sequence electricity
Press signal output to be grounded direction protection to control terminal, ensure control terminal reliably controlling switch separating brake, it is defeated in signal
Enter and output loop distinguishes a TVS pipe in parallel（14）, isolated amplifier can be caused by effectively absorbing（15）The pulse of damage, ensures
Isolated amplifier（15）Safe operation.
Claims (3)
1. a kind of residual voltage harvester, it is characterized in that：Residual voltage sensor（2）It is fixed on installation chassis（3）On, once
Conducting wire（1）The ABC three-phases galvanic circle of switch is connected to respectively, passes through 4 mounting holes（16）By wiring board（12）It is fixed on switch
Inside, to wiring board（12）Pin 24V+（6）With pin 24V-（7）Apply DC24V voltages, by wiring board（12）Pin E
（9）Ground connection, by secondary wiring（4）Respectively with wiring board（12）Pin T（10）With pin N（11）It is connected, residual voltage sensing
Device（2）Circuit ABC three-phase voltages are converted into residual voltage first through capacitance（13）Exported after filtering to isolated amplifier（15）, every
From amplifier（15）The extraneous High-frequency Interference of isolation at the same time amplifies residual voltage signal, by capacitance（13）After filtering, by drawing
Foot SO+（5）With pin SO-（8）By residual voltage signal output to control terminal, in signal input and output loop parallel connection one
A TVS pipe（14）, isolated amplifier can be caused by effectively absorbing（15）The pulse of damage.
A kind of 2. residual voltage harvester according to claim 1, it is characterised in that：Residual voltage sensor（2）Deng
Spacing arranges, and phase spacing is no less than 200mm.
A kind of 3. residual voltage harvester according to claim 1, it is characterised in that：Residual voltage sensor（2）Material
Matter is epoxy resin outsourcing silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610906838.6A CN107966602A (en) | 2016-10-19 | 2016-10-19 | A kind of residual voltage harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610906838.6A CN107966602A (en) | 2016-10-19 | 2016-10-19 | A kind of residual voltage harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107966602A true CN107966602A (en) | 2018-04-27 |
Family
ID=61996828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610906838.6A Pending CN107966602A (en) | 2016-10-19 | 2016-10-19 | A kind of residual voltage harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107966602A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761189A (en) * | 2018-07-28 | 2018-11-06 | 贵州航天天马机电科技有限公司 | A kind of miniaturization voltage acquisition general module |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250584Y (en) * | 1995-11-07 | 1997-03-26 | 王复亮 | Automatic monitoring and controlling device for low voltage line safety |
| CN201812665U (en) * | 2010-10-27 | 2011-04-27 | 河南省电力公司信阳供电公司 | Anti-resonance three-phase voltage transformer |
| CN103840438A (en) * | 2014-03-25 | 2014-06-04 | 浙江巨力电气有限公司 | Intelligent detecting system for detecting single phase grounding protection function of intelligent switch device based on 10kV neutral non-grounding distribution network system |
| CN204595084U (en) * | 2015-05-14 | 2015-08-26 | 浙江华仪电器科技有限公司 | Residual voltage sensor and there is the power transmission sequence of residual voltage acquisition function |
| CN205484519U (en) * | 2016-03-31 | 2016-08-17 | 国网浙江建德市供电公司 | Three -phase zero sequence combination formula voltage sensing device |
| CN205643476U (en) * | 2016-04-12 | 2016-10-12 | 珠海许继电气有限公司 | Outdoor zero sequence and phase sequence voltage measurement device |
| CN206096236U (en) * | 2016-10-19 | 2017-04-12 | 河南华盛隆源电气有限公司 | Zero sequence voltage collection system |
-
2016
- 2016-10-19 CN CN201610906838.6A patent/CN107966602A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250584Y (en) * | 1995-11-07 | 1997-03-26 | 王复亮 | Automatic monitoring and controlling device for low voltage line safety |
| CN201812665U (en) * | 2010-10-27 | 2011-04-27 | 河南省电力公司信阳供电公司 | Anti-resonance three-phase voltage transformer |
| CN103840438A (en) * | 2014-03-25 | 2014-06-04 | 浙江巨力电气有限公司 | Intelligent detecting system for detecting single phase grounding protection function of intelligent switch device based on 10kV neutral non-grounding distribution network system |
| CN204595084U (en) * | 2015-05-14 | 2015-08-26 | 浙江华仪电器科技有限公司 | Residual voltage sensor and there is the power transmission sequence of residual voltage acquisition function |
| CN205484519U (en) * | 2016-03-31 | 2016-08-17 | 国网浙江建德市供电公司 | Three -phase zero sequence combination formula voltage sensing device |
| CN205643476U (en) * | 2016-04-12 | 2016-10-12 | 珠海许继电气有限公司 | Outdoor zero sequence and phase sequence voltage measurement device |
| CN206096236U (en) * | 2016-10-19 | 2017-04-12 | 河南华盛隆源电气有限公司 | Zero sequence voltage collection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761189A (en) * | 2018-07-28 | 2018-11-06 | 贵州航天天马机电科技有限公司 | A kind of miniaturization voltage acquisition general module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204347118U (en) | Electrification in high voltage numerical monitor and blocking device | |
| CN101640956A (en) | Design method of intelligent power supply electronic converter of general-type railway signal lamp | |
| CN206096236U (en) | Zero sequence voltage collection system | |
| CN104198904A (en) | Insulation tube type bus partial discharge detecting device | |
| CN107966602A (en) | A kind of residual voltage harvester | |
| CN203551651U (en) | A DC power system bus voltage AC component detecting circuit | |
| CN204028283U (en) | A kind of novel fault arc detection device | |
| CN209946248U (en) | Non-contact power frequency voltage measuring device | |
| CN204330987U (en) | A kind of rotated detection instrument of electromagnetism interference | |
| CN107332219A (en) | A kind of harmonic elimination system for microcomputer | |
| CN107040286A (en) | A kind of enhanced power carrier signal sensor | |
| CN203015157U (en) | High-power induction cooker circuit based on power electronics | |
| CN108183727B (en) | Electricity consumption information interference signal filtering device, electricity consumption information acquisition system and method | |
| CN204101621U (en) | A kind of charged display and pick-up unit being applied to 110kV electric system | |
| CN206894366U (en) | Inductive load detection circuit, reactance compensation device, power emitting unit and system | |
| CN206728011U (en) | A kind of enhanced power carrier signal sensor | |
| CN201199628Y (en) | Protecting equipment for electric force power distribution PLC control detection line | |
| CN104319559A (en) | Leakage protection plug with ground wire live-line indication | |
| CN205562675U (en) | Be used for shunt capacitance ware current measurement , gather and get ability integrated device | |
| CN202424120U (en) | Pulse DC current leakage and over-voltage protection apparatus | |
| CN203800564U (en) | Multi-stage leakage protector | |
| CN204967434U (en) | Mains operated circuit and system of surge current peak value measuring circuit | |
| CN203775055U (en) | Electric pressure cooker voltage control circuit and electric pressure cooker | |
| CN202533534U (en) | Capacitance compensation test device | |
| CN204154793U (en) | For the novel voltage pick-up unit of motor train unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |