CN202305782U - Intelligent transformer station high voltage line power factor angle on-site verification apparatus - Google Patents
Intelligent transformer station high voltage line power factor angle on-site verification apparatus Download PDFInfo
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- CN202305782U CN202305782U CN2011201694401U CN201120169440U CN202305782U CN 202305782 U CN202305782 U CN 202305782U CN 2011201694401 U CN2011201694401 U CN 2011201694401U CN 201120169440 U CN201120169440 U CN 201120169440U CN 202305782 U CN202305782 U CN 202305782U
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Abstract
The utility model relates to an intelligent transformer station high voltage line power factor angle on-site verification apparatus, wherein a phase-adjustable high voltage and heavy current test condition is generated through a voltage regulator, a current boosting device, a high voltage test power supply and a phase shifter, the heavy current generated by the current boosting device is fed into a standard current transformer and an electronic voltage transformer, the high voltage generated by the high voltage test power supply is fed into the standard current transformer and the electronic voltage transformer, a digital signal processed by the electronic voltage transformer and a combination unit and an analog signal of the standard voltage and current transformer are simultaneously fed into an electronic transformer integration verification device, and the electronic transformer integration verification device compares the errors of the power factor angles of the electronic voltage transformer and the standard voltage and current transformer. The intelligent transformer station high voltage line power factor angle on-site verification apparatus can obtain the influence on power factor angle, from electronic voltage transformer, the combination unit and a data transmission network, etc., so as to adjust related parameters, thereby ensuring the accuracy of power factor angle measuring and electric energy metering.
Description
Technical field
The utility model belongs to the electric energy metrical field; Be particularly related in a kind of intelligent substation on-site calibrating method and the device of measuring the power factor of high-voltage lines angle error based on electronic mutual inductor and merge cells, can carry out field-checking the error at transformer station power factor of high-voltage lines angle.
Background technology
China has included intelligent grid in implementation plan in the power transmission and distribution project technical field at present, adopts the intelligent substation of up-to-date cutting edge technology to begin pilot construction and operation.Electric parameter measurement and electric energy metrical be the important assurance of this new technology successful Application accurately and reliably.Electronic mutual inductor in the intelligent substation all is an electronic type as the used voltage of measurement, relay protection and electric energy metrical, current transformer; Its measuring principle, structure and secondary network are different fully with traditional mutual inductor; Electronic mutual inductor output digital voltage, current signal; Become the form of standard code to send to protection, measuring and controlling equipment through merging cell translation; A protection and an important parameters of electric power power-factor angle of measuring and controlling equipment are exactly the phase differential of the digital voltage electric current of merge cells output.It is exactly that the power factor angular measurement is inaccurate that the phase difference measurement of voltage, electric current is forbidden, and the power factor angular measurement inaccurately will directly cause gaining merit, wattless power measurement and electric energy metrical are inaccurate, particularly electric energy metrical not the brigadier influence the fairness of electric weight trade settlement.The power-factor angle error delta
ΦTo power factor cos
ΦThe relation of the amount of influence is: [cos (
Φ-Δ
Φ)-cos
Φ]/cos
Φ=cos Δ
Φ-1-sin Δ
ΦTan
ΦAs working as
Φ=60 ° of (cos
Φ=0.5) time; + 10 ' the power factor error that causes of phase error be-0.5%; + 20 ' the power factor error that causes of phase error be-1% ,+30 ' the power factor error that causes of phase error be-1.5%, the power factor error that+1 ° phase error causes is-3%;
ΦDuring near 90 °, phase error increases (approximate negative tangent cutve changes) fast to the influence of power factor error.
In the application of tradition mutual inductor, the error of the phase differential of control voltage, electric current realizes that through the angular difference that detects mutual inductor the electric mutual inductor in the intelligent substation has microprocessor because of its inside, and error can be revised through software.And in reality debugging, the error of electric mutual inductor satisfies accuracy requirement after through the software correction, but in fact the electric current and voltage phase differential has surpassed 1 °.Judge with field test data according to theoretical analysis thus: the electric current and voltage phase differential is not only relevant with mutual inductor, also receives the influence of network delay, data operation in the equipment such as merge cells and optical fiber communication network.Therefore, be necessary that the intelligent substation electronic mutual inductor is measured the power factor of high-voltage lines angle carries out verification, is convenient to relevant smart machines such as electronic mutual inductor, merge cells and Networks of Fiber Communications are adjusted the accuracy of measuring to improve.
Pressurization, through-flow method traditional during the mutual inductor on site verification are: seized voltage transformer (VT) once applies 80%～120% of rated voltage, and standard potential transformer and seized parallel connection, no-load voltage ratio are identical; To 1%～120% of current transformer single pass rated current, standard current transformer and seized series connection, no-load voltage ratio are identical; The verification of voltage, current transformer is separately independently carried out.Standard current transformer and current lifting device insulation voltage over the ground is all lower in this method; The actual working environment of can not simulated field mutual inductor being installed; Promptly do not possess high voltage arranged simultaneously, the condition of big electric current, can't realize measurement to line voltage distribution, current power factor angle.And, traditional boost and high voltage of up-flow device output and the phase angle between the big electric current also are difficult to 0～360 ° of adjusting; The mutual inductor check meter does not have the function of power-factor angle between measurement standard electrician's formula and seized electronic type voltage, the current transformer simultaneously yet.
Summary of the invention
The utility model technical matters to be solved is: solve the problem that above-mentioned prior art exists; And a kind of intelligent substation power factor of high-voltage lines angle on-site calibration device is provided; Satisfy the intelligent substation electronic mutual inductor and measure the needs that verification is carried out at the power factor of high-voltage lines angle, be convenient to relevant smart machines such as electronic mutual inductor, merge cells and Networks of Fiber Communications are adjusted the accuracy of measuring to improve.
The technical scheme that the utility model adopts is: this intelligent substation power factor of high-voltage lines angle on-site calibration device comprises current lifting device, standard current transformer, electronic current mutual inductor, high-potting power supply, standard potential transformer, phase shifter, electronic type voltage transformer, merge cells, electronic mutual inductor comprehensive calibrator and the up-flow pressure regulator of boost pressure regulator and the up-flow that are used to boost; The power supply of device adopts and exchanges 380V/100A, three-phase four-wire system; Up-flow pressure regulator input end is connected in a phase power supply～380V; The phase shifter input end connects three-phase supply; The phase shifter output terminal connects the input end of the pressure regulator that boosts; The output terminal of pressure regulator of boosting connects the high-potting power supply, and the once end of standard potential transformer and electronic type voltage transformer is all parallelly connected with high-potting voltage; The up-flow output voltage regulator connects current lifting device; After the big electric current 220kV high-tension cable that passes current lifting device passes standard current transformer; Be connected to electronic current mutual inductor again; Electronic current mutual inductor output terminal and electronic type voltage transformer output terminal all are connected to the merge cells input end through Optical Fiber Transmission; The merge cells output terminal is connected to the electronic mutual inductor comprehensive calibrator through Optical Fiber Transmission, and meanwhile, the secondary terminals of standard current transformer and the secondary terminals of standard potential transformer all are connected to the electronic mutual inductor comprehensive calibrator.
The electronic mutual inductor comprehensive calibrator comprises dsp processor, optical receiver, communications protocol processing module, accurate voltage mutual inductor, precision current mutual inductor, analog signal conditioner circuit, phase differential comparator circuit, counter, multi-channel a/d converter, dsp processor peripheral circuit; The dsp processor peripheral circuit comprises LCD MODULE, button, history data repository, JTAG emulation interface and the communication module of communicating by letter and being connected with host computer; The optical receiver input end connects the output of merge cells; Optical receiver output connects the communications protocol processing module; The communications protocol processing module connects dsp processor; The input of accurate voltage mutual inductor is connected standard potential transformer output U and standard current transformer output I respectively with the precision current mutual inductor; Accurate voltage mutual inductor and the output of precision current mutual inductor are through being connected to dsp processor after analog signal conditioner circuit and multi-channel a/d converter and phase differential comparator circuit and the counter, and dsp processor is communicated by letter with host computer through communication module and is connected.
The electronic mutual inductor comprehensive calibrator is a core with the dsp processor, has the measurement function of powerful digital processing and voltage, electric current and the phase differential thereof of precision.Tester receives from electronic mutual inductor through merging voltage, the electric current optical fiber and digital signal of the output of unit F T3 interface; After light-receiving conversion and communications protocol parsing, send into the DSP computing, can obtain the parameters such as voltage, electric current, frequency, phase place harmonic of seized high-tension line.Tester will be measured and nurse one's health voltage, electric current and phase differential through mimic channel from the secondary singal of normal voltage, current transformer; The hyperchannel A/D that sends into again by DSP control carries out analog to digital conversion; To obtain digital quantity as canonical reference, also can keep watch on during site test boost, the size of up-flow; Simultaneously, the voltage after the conversion of accurate instrument transformer, current signal be through behind the phase differential comparator circuit, draws the digital quantity of phase differential by counter, sends into the DSP analyzing and processing again.DSP compares seized amount and standard volume; Can directly draw electronic mutual inductor measuring voltage, electric current, phase place instantaneous value and error thereof etc., DSP also forms a complete microprocessor system with peripheral circuits such as keyboard, display, storer, communication interface with pc, JTAG emulation interface.This tester adopts linear power frequency conversion as direct supply, and has the power unit of two electric mutual isolation, wherein+5V (maximum output 3A) is as the digital circuit power supply, and ± 12V (maximum output 0.2A) supplies power as mimic channel.
The Specifeca tion speeification of tester is: analog voltage range 42 ~ 120V, error≤0.2%; Analog current scope 0 ~ 6A, error≤0.2%; 0 ~ 360 ° of phase range, error≤0.1 °; Overtone order 2～19 times; Working power (180 ~ 260) V, 50Hz.
The on-site calibrating method of the utility model is: produce adjustable high voltage, the cranking test condition of phase place through pressure regulator, current lifting device, high-potting power supply, phase shifter; The big electric current that current lifting device is produced is linked into standard current transformer and electronic current mutual inductor; The high voltage that the high-potting power supply is produced is linked into standard potential transformer and electronic type voltage transformer; The aanalogvoltage current signal of digital voltage current signal after process electronic type voltage transformer, electronic current mutual inductor and merge cells are handled and standard potential transformer, standard current transformer inserts the electronic mutual inductor comprehensive calibrator simultaneously, the error of the power-factor angle that voltage, current power factor angle and the electronic type voltage transformer of electronic mutual inductor comprehensive calibrator standard of comparison mutual inductor output, electronic current mutual inductor, merge cells are measured.
In the technique scheme; Described high-potting power supply adopts induction-regulated series resonance increasing apparatus, ceiling voltage 160kV, maximum current 0.5A; Build by a plurality of split type equipment; Reactor and 2 capacitors of comprising 1 pressure regulator that boosts, 1 stepup transformer, 4 overlapped in series, the pressure regulator that boosts input termination phase shifter output terminal, the once end of the output termination stepup transformer of the pressure regulator that boosts; 4 reactors of secondary terminals series connection of stepup transformer, parallelly connected after 2 capacitors in series with the series circuit of stepup transformer, reactor.
In the technique scheme; Big electric current 220kV high-tension cable articulates bar with the electric current that adopts breakout box, thick soft copper lead and top to have metal clip being connected of electronic current mutual inductor and is connected; High-tension cable, breakout box, soft copper lead, electric current articulate bar and connect successively, and hard the end of a thread of high-tension cable is become movable connecting elements.
In the technique scheme, the high-potting power supply with adopt soft bare copper wire and voltage to articulate bar being connected of electronic type voltage transformer to be connected.
The utility model intelligent substation power factor of high-voltage lines angle on-site calibration device; Can carry out the verification of gamut ground to electric parameters such as the phase place of electronic mutual inductor in the intelligent substation and corollary apparatus and power factors; Obtain actual phase error; For the parameter adjustment of devices such as electronic mutual inductor, merge cells provides effective technical basis, guarantee to measure and the accuracy of electric energy metrical.Can produce the condition of work that on-the-spot mutual inductor has high voltage, big electric current simultaneously through this device; And obtain electronic mutual inductor, merge cells, data transmission network etc. exactly because of the influence to the power factor angle error such as phase differential and time delay; With devices such as adjustment electronic mutual inductor, merge cellses related parameter, the accuracy of guaranteed output factor angular measurement and electric energy metrical arranged.
In intelligent substation power factor of high-voltage lines angle on-site calibrating method of the present invention and the device; The electronic mutual inductor comprehensive calibrator has the optical fiber interface based on IEC61850; Can insert simultaneously and examination criteria voltage, Current Transformer Secondary simulating signal and, measure the error of power-factor angle through relatively drawing electronic mutual inductor by the electronic mutual inductor optical fiber and digital signal of merge cells output.
In the on-site calibration device of the utility model intelligent substation power factor of high-voltage lines angle; Through the 220kV high-tension cable big electric current is linked into standard current transformer and seized electronic current mutual inductor; Not only have enough current capacities; And can also bear 220kV and following high voltage; For conventional current lifting device, standard current transformer provide technical guarantee with being connected of high tension loop, has the good insulation performance performance when guaranteeing current lifting device and the standard current transformer of high-tension cable through low-pressure type.
Description of drawings
Fig. 1 is the electric circuit diagram of the utility model.
The explanation of accompanying drawing mark:
1-up-flow pressure regulator, the 2-current lifting device, the big electric current 220kV of 3-high-tension cable, the 4-breakout box,
The thick soft copper lead of 5-, the 6-electric current articulates bar, the 7-Optical Fiber Transmission, the 8-standard current transformer,
The 9-merge cells, the ECT-electronic current mutual inductor, the EVT-electronic type voltage transformer,
The 10-phase shifter, the 11-boost pressure controller, the 12-stepup transformer, the 13-reactor, the 14-capacitor,
The 15-standard potential transformer, the soft bare copper wire of 16-, 17-voltage articulates bar.
Accompanying drawing 2 is an electronic mutual inductor comprehensive calibrator functional structure chart of the present invention.
Embodiment
Shown in accompanying drawing 1, intelligent substation power factor of high-voltage lines angle on-site calibration device comprises current lifting device, standard current transformer, high-potting power supply, standard potential transformer, phase shifter, electronic mutual inductor comprehensive calibrator and is used to boost and the pressure regulator that boosts, the up-flow pressure regulator of up-flow.The power supply of device adopts and exchanges 380V/100A, three-phase four-wire system.After the big electric current that current lifting device produces passed standard current transformer by the high-tension cable of 220kV electric pressure, being connected to ECT again was two ends of electronic current mutual inductor, adopts this mode to have the advantages that electric current is big, insulation voltage is high.The high voltage (1.2*220/
kV and following) that the high-potting power supply produces is behind parallelly connected standard potential transformer, and being connected to EVT again is two ends of electronic type voltage transformer.If EVT and ECT primary circuit can not separate, then the high voltage of high-potting power supply generation also is linked into the high-tension cable of once holding and pass through big electric current of ECT.The input power supply of high-potting power supply is adjusted phase place through phase shifter, and the high voltage of high-potting power supply generation and the power-factor angle of the big electric current that current lifting device produces are regulated in 0～360 ° of scope continuously.Like this, just produced phase place in 0～360 ° of adjustable high voltage, cranking test condition at ECT and EVT primary side.
Digital voltage current signal after EVT, ECT handle through merge cells; Insert the electronic mutual inductor comprehensive calibrator simultaneously with the aanalogvoltage current signal of standard potential transformer, standard current transformer; Carry out the measurement of voltage error, voltage phase difference, current error, current and phase difference; And the direct error of the actual voltage of high-tension line, current power factor angle and the power-factor angle measured through EVT, ECT, merge cells relatively; Judging whether it meets request for utilization, and error information is provided for the adjustment of intelligent apparatus such as EVT, ECT, merge cells.
Standard potential transformer and standard current transformer at the electronic mutual inductor primary side adopt electromagnetic type, thereby realize the precision measurement to high voltage or big current parameters.Standard potential transformer is the SF6 gas-insulated, no-load voltage ratio be (220/
, 110/
)/(0.1/
) kV, class of accuracy be 0.05 grade.ECT primary side current loop and relevant device and EVT primary side loop and relevant device equipotential, insulation against ground voltage equals the rated voltage of EVT.
The insulation of adopting breakout box, soft copper lead and top to have metal clip that is connected of high-tension cable and ECT articulates bar, and hard the end of a thread of high-tension cable is become movable connecting elements, and the scene of being convenient to connects tears operation open.High-tension cable adopts the 220kV high-tension cable; Not only have enough current capacities; And can also bear 220kV and following high voltage; Can be conventional current lifting device, standard current transformer provides technical guarantee with being connected of high tension loop, has the good insulation performance performance when guaranteeing current lifting device and the standard current transformer of high-tension cable through low-pressure type.
Current lifting device is the high-power type of general low-voltage, a core-theaded type, and input voltage is 0 ~ 380V, maximum output current 3600A, capacity 30kVA, and compact conformation is convenient to onsite moving and is built.Standard current transformer is general low pressure multirange type, a core-theaded type, and class of accuracy is the 0.05S level, and maximum current 5000A, secondary rated current 5A or a 1A can carry out the current measurement of high precision, can also be used for the error of verification ECT.Be used for the up-flow pressure regulator of up-flow control, input voltage is 380V, output voltage 0 ~ 430V, capacity 30kVA, has stronger on-the-spot up-flow ability.
The high-potting power supply adopts induction-regulated series resonance increasing apparatus, and ceiling voltage is that 160kV, maximum current are 0.5A, is built by a plurality of split type equipment, and monomer is light, be easy to carrying.The high-potting power supply comprises reactor and 2 capacitors of 1 pressure regulator that boosts, 1 stepup transformer, 4 overlapped in series.Pressure regulator input voltage 220V, output voltage 0～250V, capacity 5kVA boost.Stepup transformer input voltage 0～200V, output voltage 0～10000V, output maximum current 0.5A.Reactance value 238.7～the 954.9H of separate unit reactor, corresponding iron core air gap are regulated 0～60mm, withstand voltage 40kV.The electric capacity of single capacitor is 0.01uF, rated voltage 110kV; When on-the-spot primary circuit electric capacity hour is parallel to once very much; Realize that with load balancing reactor series resonance improves the multiple that boosts, need not use when electric capacity of high-tension cable and pipeline reaches 0.005uF.
Before the pressure regulator that boosts, use a phase shifter; Be used for regulating the phase place of pressure regulator input power supply of boosting; Adjustable continuously to realize the 360 ° of scopes of power-factor angle between single test voltage and the electric current, it is input as 0～360 ° of three-phase and four-line 380V, output 0～250V, capacity 5kVA, phase shift range.
The electronic mutual inductor comprehensive calibrator is for converging the HEZ-1 type of pure power technology company cooperation research and development with the Hunan; It has all functions of conventional electrical formula mutual-inductor tester; Like secondary voltage, current analog interface (100/
V, 5A or 1A) and, can test ratio difference and the phase differential of EVT, ECT based on the fiber data interface of IEC61850 agreement; And; It inserts the optical fiber output data quantity of normal voltage, Current Transformer Secondary output analog quantity and seized electronic mutual inductor simultaneously, and also relatively draws the error of measuring power-factor angle through electronic mutual inductor through simulation, digital processing system rated output factor angle.This tester adopts the 220Vac Alternating Current Power Supply, has giant-screen LCD and shows that accuracy is 0.05%.
In addition, boost pressure regulator, up-flow pressure regulator, phase shifter, current lifting device, stepup transformer, standard current transformer, standard potential transformer and ECT, EVT, merge cells is the prior art of this area.
Intelligent substation power factor of high-voltage lines angle calibration equipment can be to on-the-spot installation in the intelligent substation, 220kV and 110kV electric pressure, carry out verification based on ratio difference, phase differential and the power-factor angle of the electronic mutual inductor of IEC61850 agreement.
Referring to Fig. 2; The electronic mutual inductor comprehensive calibrator comprises dsp processor, optical receiver, communications protocol processing module, accurate voltage mutual inductor, precision current mutual inductor, analog signal conditioner circuit, phase differential comparator circuit, counter, multi-channel a/d converter, dsp processor peripheral circuit; The dsp processor peripheral circuit comprises LCD MODULE, button, history data repository, JTAG emulation interface and the communication module of communicating by letter and being connected with host computer; The optical receiver input end connects the output of merge cells; Optical receiver output connects the communications protocol processing module; The communications protocol processing module connects dsp processor; The input of accurate voltage mutual inductor is connected standard potential transformer output U and standard current transformer output I respectively with the precision current mutual inductor; Accurate voltage mutual inductor and the output of precision current mutual inductor are through being connected to dsp processor after analog signal conditioner circuit and multi-channel a/d converter and phase differential comparator circuit and the counter, and dsp processor is communicated by letter with host computer through communication module and is connected.
The electronic mutual inductor comprehensive calibrator is a core with the dsp processor, has the measurement function of powerful digital processing and voltage, electric current and the phase differential thereof of precision.Tester receives from electronic mutual inductor through merging voltage, the electric current optical fiber and digital signal of the output of unit F T3 interface; After light-receiving conversion and communications protocol parsing, send into the DSP computing, can obtain the parameters such as voltage, electric current, frequency, phase place harmonic of seized high-tension line.Tester will be measured and nurse one's health voltage, electric current and phase differential through mimic channel from the secondary singal of normal voltage, current transformer; The hyperchannel A/D that sends into again by DSP control carries out analog to digital conversion; To obtain digital quantity as canonical reference, also can keep watch on during site test boost, the size of up-flow; Simultaneously, the voltage after the conversion of accurate instrument transformer, current signal be through behind the phase differential comparator circuit, draws the digital quantity of phase differential by counter, sends into the DSP analyzing and processing again.DSP compares seized amount and standard volume; Can directly draw electronic mutual inductor measuring voltage, electric current, phase place instantaneous value and error thereof etc., DSP also forms a complete microprocessor system with peripheral circuits such as keyboard, display, storer, communication interface with pc, JTAG emulation interface.This tester adopts linear power frequency conversion as direct supply, and has the power unit of two electric mutual isolation, wherein+5V (maximum output 3A) is as the digital circuit power supply, and ± 12V (maximum output 0.2A) supplies power as mimic channel.
The Specifeca tion speeification of tester is: analog voltage range 42 ~ 120V, error≤0.2%; Analog current scope 0 ~ 6A, error≤0.2%; 0 ~ 360 ° of phase range, error≤0.1 °; Overtone order 2～19 times; Working power (180 ~ 260) V, 50Hz.
Claims (4)
1. intelligent substation power factor of high-voltage lines angle on-site calibration device is characterized in that: comprise current lifting device, standard current transformer, electronic current mutual inductor, high-potting power supply, standard potential transformer, phase shifter, electronic type voltage transformer, merge cells, electronic mutual inductor comprehensive calibrator and the up-flow pressure regulator of boost pressure regulator and the up-flow that are used to boost; The power supply of device adopts and exchanges 380V/100A, three-phase four-wire system; Up-flow pressure regulator input end is connected in and exchanges the 380V power supply; The phase shifter input end connects three-phase supply; The phase shifter output terminal connects the input end of the pressure regulator that boosts; The output terminal of pressure regulator of boosting connects the high-potting power supply, and the once end of standard potential transformer and electronic type voltage transformer is all parallelly connected with high-potting voltage; The up-flow output voltage regulator connects current lifting device; After the big electric current 220kV high-tension cable that passes current lifting device passes standard current transformer; Be connected to electronic current mutual inductor again; Electronic current mutual inductor output terminal and electronic type voltage transformer output terminal all are connected to the merge cells input end through Optical Fiber Transmission; The merge cells output terminal is connected to the electronic mutual inductor comprehensive calibrator through Optical Fiber Transmission, and meanwhile, the secondary terminals of standard current transformer and the secondary terminals of standard potential transformer all are connected to the electronic mutual inductor comprehensive calibrator.
2. intelligent substation power factor of high-voltage lines according to claim 1 angle on-site calibration device; It is characterized in that: described high-potting power supply adopts induction-regulated series resonance increasing apparatus, ceiling voltage 160kV, maximum current 0.5A; Build by a plurality of split type equipment; Reactor and 2 capacitors of comprising 1 pressure regulator that boosts, 1 stepup transformer, 4 overlapped in series, the pressure regulator that boosts input termination phase shifter output terminal, the once end of the output termination stepup transformer of the pressure regulator that boosts; 4 reactors of secondary terminals series connection of stepup transformer, parallelly connected after 2 capacitors in series with the series circuit of stepup transformer, reactor.
3. intelligent substation power factor of high-voltage lines according to claim 1 angle on-site calibration device; It is characterized in that: big electric current 220kV high-tension cable articulates bar with the electric current that adopts breakout box, thick soft copper lead and top to have metal clip being connected of electronic current mutual inductor and is connected; High-tension cable, breakout box, soft copper lead, electric current articulate bar and connect successively, and hard the end of a thread of high-tension cable is become movable connecting elements.
4. intelligent substation power factor of high-voltage lines according to claim 1 angle on-site calibration device is characterized in that: the high-potting power supply with adopt soft bare copper wire and voltage to articulate bar being connected of electronic type voltage transformer to be connected.
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| CN2011201694401U CN202305782U (en) | 2011-05-25 | 2011-05-25 | Intelligent transformer station high voltage line power factor angle on-site verification apparatus |
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| CN2011201694401U CN202305782U (en) | 2011-05-25 | 2011-05-25 | Intelligent transformer station high voltage line power factor angle on-site verification apparatus |
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| CN102305893A (en) * | 2011-05-25 | 2012-01-04 | 湖南省电力公司科学研究院 | Method and device for checking power-factor angle of high voltage line of intelligent substation on site |
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| CN105974280A (en) * | 2016-05-09 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | GIS voltage holding test device |
| CN105974282A (en) * | 2016-05-09 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | GIS voltage holding test method |
| CN106896253A (en) * | 2017-03-13 | 2017-06-27 | 烟台东方威思顿电气有限公司 | A kind of pluggable Electrical Instrument Transducers with Digital makeup is put |
| CN109991515A (en) * | 2019-04-09 | 2019-07-09 | 国网四川省电力公司电力科学研究院 | The method and system of a high current are obtained under a kind of low actual load |
| CN112467880A (en) * | 2020-11-19 | 2021-03-09 | 西安热工研究院有限公司 | Device and method for limiting maximum boost of head end of black-start sending-out line |
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2011
- 2011-05-25 CN CN2011201694401U patent/CN202305782U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305893A (en) * | 2011-05-25 | 2012-01-04 | 湖南省电力公司科学研究院 | Method and device for checking power-factor angle of high voltage line of intelligent substation on site |
| CN102305893B (en) * | 2011-05-25 | 2013-09-25 | 湖南省电力公司科学研究院 | Method and device for checking power-factor angle of high voltage line of intelligent substation on site |
| CN105319436A (en) * | 2014-06-12 | 2016-02-10 | 国网山西省电力公司电力科学研究院 | Smart station 3/2 wiring bus reactive power checking method based on traditional transformer |
| CN105319436B (en) * | 2014-06-12 | 2017-07-18 | 国网山西省电力公司电力科学研究院 | The wiring bus reactive power rate method of calibration of intelligent station 3/2 based on traditional transformer |
| CN105974280A (en) * | 2016-05-09 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | GIS voltage holding test device |
| CN105974282A (en) * | 2016-05-09 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | GIS voltage holding test method |
| CN106896253A (en) * | 2017-03-13 | 2017-06-27 | 烟台东方威思顿电气有限公司 | A kind of pluggable Electrical Instrument Transducers with Digital makeup is put |
| CN106896253B (en) * | 2017-03-13 | 2023-06-09 | 烟台东方威思顿电气有限公司 | Digital device of live plug-in electronic transformer |
| CN109991515A (en) * | 2019-04-09 | 2019-07-09 | 国网四川省电力公司电力科学研究院 | The method and system of a high current are obtained under a kind of low actual load |
| CN109991515B (en) * | 2019-04-09 | 2021-11-30 | 国网四川省电力公司电力科学研究院 | Method and system for acquiring primary large current under low actual load |
| CN112467880A (en) * | 2020-11-19 | 2021-03-09 | 西安热工研究院有限公司 | Device and method for limiting maximum boost of head end of black-start sending-out line |
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