CN104362520A - Intelligent high voltage verification display and block system of substation - Google Patents
Intelligent high voltage verification display and block system of substation Download PDFInfo
- Publication number
- CN104362520A CN104362520A CN201410569502.6A CN201410569502A CN104362520A CN 104362520 A CN104362520 A CN 104362520A CN 201410569502 A CN201410569502 A CN 201410569502A CN 104362520 A CN104362520 A CN 104362520A
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- display
- high voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
-
- 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
- G01R19/145—Indicating the presence of current or voltage
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses an intelligent high voltage verification display and block system of a substation, and solves the problems that an existing verification display and block system has potential safety hazards and is likely to be interfered. A high voltage electrifying sensor is interactively connected with a display and lock controller in a wireless way; the display and lock controller is connected with a computer key respectively connected with a five-prevention lock and a five-prevention control system; the display and lock controller comprises a display, a verification energy collector, a power amplifier and a frequency controller. The display and block system provided by the invention has a verification prompt function, and further has a plurality of misoperation-preventive locking connectors such as a misoperation-preventive key and an electric lock connector; furthermore, the forced locking demands of various equipments can be comprehensively realized, the conditions of mistakenly entering gaps, mistakenly climbing a tower and mistakenly closing a ground cutter can be effectively prevented, the electrification warning and forced locking function can be provided to production staff, the human casualty accidents can be prevented, and the safety of an operator can be ensured.
Description
Technical field
The present invention relates to anti-misoperation system in electric power system, be specially the display of a kind of intelligent substation high voltage testing and block sytem.
Background technology
In electric power system, prevent electric misoperation, guarantee to send out, the safe and reliable operation of controller switching equipment and electric line is also primarily one of most important requirement, just in case have an accident, will huge economic loss be caused, and even jeopardize equipment and personal safety.For this reason, power industry mandatory requirement is taked to prevent electric misoperation device in electric power system, to meet electric power " five prevent " requirement.
For many years, the device preventing various misoperation is being studied always by electric industry department.And the method for the induction power taking energy that home and abroad is used is at present all that the magnetic field intercepts secondary coil produced by electric current obtains energy or signal mostly.The method is (as equipment is unloaded) when only there being voltage not have electric current, just can not obtain signal.Most passive high voltage is charged tests showing device, and its drive current is that the output of capacity type high pressure sensor by directly contacting with primary equipment provides, and its drive current provided is comparatively large, and whether charged display be also obvious.But this kind of device is installed, needs capacitance type sensor is installed, and the installation that must have a power failure, therefore this device is generally arranged in high-tension switch cabinet.Because its characteristic belongs to non-equipotential mounting means, be difficult to install on the equipment of high voltage grade.
At present, the high voltage testing display that Application comparison is many and locking device are mainly divided into contact, induction type and Equipotential-type according to operation principle.
Contact high voltage testing display, main body is plug by one with ceramic condenser, shell body poured with epoxy resin or electroceramics composition; It is based on principle of capacitive divider, provides the electriferous state information of installation place electric equipment; Be used in the high-tension switch cabinet of 10 ~ 35kV.This device is made up of ceramic insulator sensor, display and rectifier cell, and core is porcelain transducer, and it is combined by various adhesives by the insulator manufactured with electroceramics and other elements.Porcelain transducer, except the characteristic with pillar porcelain insulator, is also had the effect being obtained display institute energy requirement by capacitance partial pressure, reaches the object of passive display.Display element in display adopts multiple neon lamp to be connected in series, and increases light-emitting area, and adopts the light emitting species of flash of light, receives better display effect.
The advantage of the charged explicit device of contact is without the need to outer power supply source, but deposits problem both ways: one is the special construction due to transducer, determine when plug puncture or shell body insulation flashover time, cause the single phase ground fault of installation place; Two is that plug and shell body are gluing when combining, and may occur partial discharge, and integral insulation height dimension limits it cannot form electrical verification display more than more than 35kV level, is not suitable with outdoor environment and runs.
Inductosyn is an induction electrode near the insulation against ground of high-voltage charged body, and by the stray capacitance between induction electrode and electrification in high voltage, lotus root closes the alternating voltage signal on high-voltage charged body.By cable, this signal is sent to display controller to carry out amplifying and processing, finally realizes high voltage testing display and lock-in control.
The advantage of induction-type high-voltage electrical verification display unit is: transducer can be arranged on outside line security distance, and reliability is higher; Transducer does not directly contact with high voltage bus, and device itself can not produce partial discharge, install, safeguard simple and convenient; Except Presentation Function, locking can also be realized by output contact; The form changing transducer can the electrical verification display of real GIS and locking, and range of application is wider.Shortcoming is that interference free performance is poor, can not cover full voltage range; Need to provide additional working power, do not have near cannot being applied on the high-tension line of 220V AC power.
This device relies on the high-voltage discharge tube of electric field self-energizing to realize electrical verification display.Be filled with the discharge tube of specific gas, according to Tang Xun or fluidization tower theory, the dissociation of gas can be evoked under high voltage electric field effect; When reaching self-maintained discharge condition, inevitable with photoionization and recombination process thereof, certain radiance can be showed in discharge channel.Its operation principle is that display and high-voltage link together, and relies on the displacement current of space electric field to obtain energy and maintains glow discharge.
Adopt the discharge tube of usual structure neon filling, very difficult realization is out of doors in strong environmental light applications in daytime, and its radiance can provide eye-catching visual brightness.This high-voltage discharge tube operation principle is: be connected with high potential by its one end, and the other end, by auxiliary electrode stray capacitance over the ground, forms displacement current loop, maintains gas discharge.The electric field energy extracted by this mode is limited, measures by experiment, and general discharging current is limited to tens in scope.Simultaneously, as the discharge tube of electrical verification display, because 100 μ A display unit main bodies are subject to the phase spacing of the electric equipment of installation place and the restriction of size own, within requiring that its length is limited in 100 mm, thus, it proposes some constraint to the size of discharge tube and structural design.
Equipotential type high voltage testing display unit belongs to prompting-type, and its advantage adopts the connection of unsettled current potential, can not affect the normal operation of electrical network; Without the need to additional power source, be suitable for indoor outer operational environment.Shortcoming is that discharge tube is easily aging; Can only Presentation Function be provided, locking contact can not be exported.
Traditional electrical verification display and block sytem are all by capacitance partial pressure, make indicator light shinny with the mode that electrification in high voltage part directly contacts, or at Near Ground, an inductive pick-up is installed, powered by the interchange additional power source of 220V, signal is amplified, makes indicator light luminescence or realize automatic blocking.Puncture because first kind of way exists capacitor insulation, cause the danger of the direct short circuit grounding of high pressure, threaten to the safety of electrical network, and can only indoors use.Second way Problems existing is, the ground of transformer station gathers induced signal, is easily subject to the interference at other phase and charged interval, and interference is large.Due to needs external power supply, this mode is not suitable for circuit uses, and is also very easily disturbed in the use of transformer station.
Summary of the invention
The present invention, in order to solve existing electrical verification display and block sytem exists potential safety hazard and the problem be very easily disturbed, provides the display of a kind of intelligent substation high voltage testing and block sytem.
The present invention adopts following technical scheme to realize: a kind of intelligent substation high voltage testing display and block sytem, comprise electrification in high voltage transducer, display and locking controller, computer key, five anti-locksets, five anti-control system, electrification in high voltage transducer is wirelessly connected alternately with display and locking controller; Electrification in high voltage transducer is arranged on high voltage electric equipment, triplets, respectively A, B, C three-phase of corresponding high voltage electric power equip ment; Display and locking controller are installed on cabinet door or the high-voltage circuit grounding cutter place of the switch cubicle of high voltage electric equipment; Wireless high-voltage isolation between electrification in high voltage transducer, display and locking controller; Display and locking controller are connected with computer key, and computer key is connected respectively with five anti-locksets, five anti-control system; Display and locking controller comprise display, electrical verification energy collecting device, power amplifier and frequency controller, and monitor body is made up of high optically focused, high brightness, high-power LED lamp; Flashing rate control system is had additional in display; Electrical verification energy collecting device by rectifier and buck converter integrated; Power amplifier adopts OTL power amplification circuit, and the front end of OTL power amplification circuit is voltage amplifier; Frequency controller adopts the control circuit be made up of IGBT to make.
During operation, by electrification in high voltage transducer to display and locking controller input tape telecommunications breath, computer key carries out electrical verification by five anti-control system, judges whether lock coding meets, and prevents from opening by mistake lock phenomenon;
Display adopts high optically focused, high brightness, high-power LED lamp, achieves the illumination effect that power consumption is little and brightness is high, increased flashing rate control system in display newly, achieve the stable of flashing rate, have stability and reliability, the flicker frequency controlling light-emitting component makes observation personnel feel comfortable, electrical verification display in system, utilizing coupling principle to get can, by the power amplifier than large 30 times of indoor type electrical verification display multiplication factor, according to determining energy hole, triggering the light-emitting component be made up of high optically focused, high brightness, high-power LED, not needing additional power source, equal with electrified body current potential, do not affect the normal operation of electrified body, under the background of outdoor strong sunlight in summer, obvious, stable flicker light can be sent, electrical verification energy collecting device in system is by an integrated low-loss rectifier and an efficient voltage reducing type transducer, with the high-tension line coupling energy by producing in collection environment, then this power conversion is become the output of well-tuned, for light-emitting element assembly provides energy, this energy acquisition module is for directly to voltage waveform rectification and store gathered energy and design in an external storage capacitor, consume any too much power by an internal parallel pressurizer simultaneously, the ultra low quiescent current undervoltage lockout pattern possessing wide retarding window enables electric charge accumulate on a storage capacitor, till buck converter can send the electric charge that a part stores to output expeditiously, when non-loaded resting state, adjustable output voltage, to charge to storage capacitance simultaneously continuously.Overcome existing electrical verification display and block sytem exists potential safety hazard and the problem be very easily disturbed.
The present invention not only has the function of electrical verification prompting, and there is the multiple anti-misoperation locking interface such as error prevention key, electric blocking contact, the forced blocking demand of the various equipment of round Realization, effectively prevent from being strayed into interval, fault rod climbing tower, closing ground cutter by mistake, charged warning and forced blocking function is provided to producers, prevent human casualty accident from occurring, ensure operating personnel's safety; The various places such as switch cubicle, ring main unit, box-type substation, GIS combined electric, cable end, high voltage bus, line-to-ground cutter, open combined electrical apparatus can be installed on.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the circuit theory diagrams of Fig. 1 intermediate power amplifier;
Fig. 3 is the circuit theory diagrams of Fig. 1 medium frequency controller.
Embodiment
A kind of intelligent substation high voltage testing display and block sytem, comprise electrification in high voltage transducer, display and locking controller, computer key, five anti-locksets, five anti-control system, electrification in high voltage transducer is wirelessly connected alternately with display and locking controller; Electrification in high voltage transducer is arranged on high voltage electric equipment, triplets, respectively A, B, C three-phase of corresponding high voltage electric power equip ment; Display and locking controller are installed on cabinet door or the high-voltage circuit grounding cutter place of the switch cubicle of high voltage electric equipment; Wireless high-voltage isolation between electrification in high voltage transducer, display and locking controller; Display and locking controller are connected with computer key, and computer key is connected respectively with five anti-locksets, five anti-control system; Display and locking controller comprise display, electrical verification energy collecting device, power amplifier and frequency controller, and monitor body is made up of high optically focused, high brightness, high-power LED lamp; Flashing rate control system is had additional in display; Electrical verification energy collecting device by rectifier and buck converter integrated; Power amplifier adopts OTL power amplification circuit, and the front end of OTL power amplification circuit is voltage amplifier; Frequency controller adopts the control circuit be made up of IGBT to make.
In specific implementation process, this system can be divided into indoor type and indoor type according to installation scene, indoor high-voltage electrical verification display and locking device are applicable to the indoor high-voltage power equipments such as switch cubicle, narrow space complicated for indoor equipment internal structure and the actual features design such as relative closure, electromagnetic environment be complicated.Passive induction energy fetching device is directly installed on equipment high pressure position, by the mode of coupling energy taking, power amplification, high voltage electric field is converted to radiofrequency signal to send, receive control module to receive signal, change, calculate, judge, what automatically control locking device according to equipment live situation cut-offs state; The actual features such as outdoor high-voltage electrical verification display and locking device are applicable to the outdoor high-voltage power equipments such as multiple-loop line ultra-high-tension power transmission line and grounding switch thereof, relatively open for outdoor equipment space, and natural daylight is stronger design.Live detection and display module are directly installed on equipment high pressure position, by the mode of coupling energy taking, power amplification, high voltage electric field are converted to electric flux, are pointed out by charged signal by the flicker of high-power light-emitting element.Send radiofrequency signal to receive and control module radiofrequency signal sends, reception control module receives signal, changes, calculates, judges, what automatically control locking device according to equipment live situation cut-offs state simultaneously.
Low-power level signal carries out modulating by power amplifier, process after, due to impedance operator, if directly link coupling circuit, will be too little because of signal, be attenuated soon.For this reason, prior art must be utilized small-signal to be carried out power amplification makes whole communication process carry out smoothly.According to actual conditions, the technology of power amplifier mainly realizes following aspect function: have enough large power output, normal transmission during guarantee signal transmits in coupled system and circuit; Require rated load impedance and the coupling circuit impedance matching of power amplifier; Because load variations is larger, require that power amplifier has strong carrying load ability; Require power amplifier working stability, dependable performance.According to the feature of typical OTL circuit, build experimental circuit as shown in the figure.In this circuit, front end is voltage amplifier, and OTL circuit is by front end input signal, and rear end is output signal.
Frequency controller adopts the circuit be made up of IGBT to produce high-power sinusoidal signal, this signal is after step-up transformer boosting and high-pressure series resonant circuit are amplified, electric pressure can reach high pressure, superhigh pressure, ultra high voltage rank, set up the Mathematical Modeling of frequency modulation type resonance extra-high voltage experiment power supply, and propose the method for voltage-regulation self-adjusting proportional, integral control method and the phase-locked automatic frequency adjustment of a kind of new PI on this basis, thus realize pressure regulation and the frequency modulation of whole system, control method is conducive to the steady-state error of elimination system and improves the dynamic property of system, be easy to Project Realization.Frequency control system structure is primarily of the uncontrollable rectification circuit of three-phase, and H-bridge inverter circuit, output filter, series resonant circuit forms.
Claims (1)
1. an intelligent substation high voltage testing display and block sytem, it is characterized in that: comprise electrification in high voltage transducer, display and locking controller, computer key, five anti-locksets, five anti-control system, electrification in high voltage transducer is wirelessly connected alternately with display and locking controller; Electrification in high voltage transducer is arranged on high voltage electric equipment, triplets, respectively A, B, C three-phase of corresponding high voltage electric power equip ment; Display and locking controller are installed on cabinet door or the high-voltage circuit grounding cutter place of the switch cubicle of high voltage electric equipment; Wireless high-voltage isolation between electrification in high voltage transducer, display and locking controller; Display and locking controller are connected with computer key, and computer key is connected respectively with five anti-locksets, five anti-control system;
Display and locking controller comprise display, electrical verification energy collecting device, power amplifier and frequency controller, and monitor body is made up of high optically focused, high brightness, high-power LED lamp; Flashing rate control system is had additional in display; Electrical verification energy collecting device by rectifier and buck converter integrated; Power amplifier adopts OTL power amplification circuit, and the front end of OTL power amplification circuit is voltage amplifier; Frequency controller adopts the control circuit be made up of IGBT to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569502.6A CN104362520A (en) | 2014-10-23 | 2014-10-23 | Intelligent high voltage verification display and block system of substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569502.6A CN104362520A (en) | 2014-10-23 | 2014-10-23 | Intelligent high voltage verification display and block system of substation |
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| CN104362520A true CN104362520A (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410569502.6A Pending CN104362520A (en) | 2014-10-23 | 2014-10-23 | Intelligent high voltage verification display and block system of substation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152563A (en) * | 2018-01-06 | 2018-06-12 | 国网山东省电力公司夏津县供电公司 | Early warning interceptor is accidentally stepped under electromagnetically |
| CN108802479A (en) * | 2018-05-26 | 2018-11-13 | 杭州顿恒科技有限公司 | A kind of equipotential high voltage electrified monitoring device |
| CN113161170A (en) * | 2020-01-07 | 2021-07-23 | 国网上海市电力公司 | Method for preventing mistaken closing of grounding switch blade on GIS combined electrical apparatus in electrified mode |
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| JP2010026838A (en) * | 2008-07-22 | 2010-02-04 | Toshiba Lighting & Technology Corp | Wireless sensor |
| CN202614782U (en) * | 2012-05-22 | 2012-12-19 | 南京市溧水县电子研究所有限公司 | Wireless speed sensor |
| CN103743937A (en) * | 2014-01-28 | 2014-04-23 | 成都赛康信息技术有限责任公司 | High voltage presence indicating device and implementing method thereof |
| CN203589843U (en) * | 2013-11-07 | 2014-05-07 | 成都赛康信息技术有限责任公司 | Intelligent high-voltage live-line display and locking device |
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2014
- 2014-10-23 CN CN201410569502.6A patent/CN104362520A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010026838A (en) * | 2008-07-22 | 2010-02-04 | Toshiba Lighting & Technology Corp | Wireless sensor |
| CN202614782U (en) * | 2012-05-22 | 2012-12-19 | 南京市溧水县电子研究所有限公司 | Wireless speed sensor |
| CN203589843U (en) * | 2013-11-07 | 2014-05-07 | 成都赛康信息技术有限责任公司 | Intelligent high-voltage live-line display and locking device |
| CN103743937A (en) * | 2014-01-28 | 2014-04-23 | 成都赛康信息技术有限责任公司 | High voltage presence indicating device and implementing method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152563A (en) * | 2018-01-06 | 2018-06-12 | 国网山东省电力公司夏津县供电公司 | Early warning interceptor is accidentally stepped under electromagnetically |
| CN108802479A (en) * | 2018-05-26 | 2018-11-13 | 杭州顿恒科技有限公司 | A kind of equipotential high voltage electrified monitoring device |
| CN108802479B (en) * | 2018-05-26 | 2023-07-07 | 杭州顿恒科技有限公司 | Equipotential high-voltage live-line monitoring device |
| CN113161170A (en) * | 2020-01-07 | 2021-07-23 | 国网上海市电力公司 | Method for preventing mistaken closing of grounding switch blade on GIS combined electrical apparatus in electrified mode |
| CN113161170B (en) * | 2020-01-07 | 2024-06-07 | 国网上海市电力公司 | Method for preventing electrified mis-closing of grounding switch blade on GIS combined electrical appliance |
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Application publication date: 20150218 |