CN101614800A - A kind of calibration device for comprehensive parameter tester of transformer - Google Patents
A kind of calibration device for comprehensive parameter tester of transformer Download PDFInfo
- Publication number
- CN101614800A CN101614800A CN200910181695A CN200910181695A CN101614800A CN 101614800 A CN101614800 A CN 101614800A CN 200910181695 A CN200910181695 A CN 200910181695A CN 200910181695 A CN200910181695 A CN 200910181695A CN 101614800 A CN101614800 A CN 101614800A
- Authority
- CN
- China
- Prior art keywords
- road
- transformer
- signal generator
- calibration device
- module
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 238000002955 isolation Methods 0.000 claims description 17
- 238000013519 translation Methods 0.000 claims description 2
- 238000012795 verification Methods 0.000 abstract description 19
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 16
- 238000013461 design Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention discloses a kind of calibration device for comprehensive parameter tester of transformer, comprise host computer and slave computer, described host computer comprises and is used to accept the canonical parameter information that the testing person presets, and canonical parameter information is converted into corresponding electric current automatically, voltage, phase place essential information and the user interface that links to each other with the control module input end of slave computer, described slave computer comprises with the user interface of host computer and linking to each other, receive the information of host computer and send the control module of control word, it is characterized in that: the output of described control module links to each other with 6 road signal generator modules respectively, wherein the output of 3 road signal generator modules connects the input of corresponding 3 road precision constant current source modules respectively, and the output of other 3 road signal generator modules connects the input of 3 road accurate voltage source modules respectively.The present invention can realize comprehensive parameter tester of transformer is carried out the verification of high-level efficiency, pin-point accuracy, and does not need extra manual conversion, has improved the efficient of verification work.
Description
Technical field
The present invention relates to a kind of calibration device for comprehensive parameter tester of transformer, the calibration, calibrating and the detection range that belong to the power test instrument, utilize this calibration equipment can be to the main measurement function of comprehensive parameter tester of transformer promptly: open circuit loss, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, power factor, frequency etc. be carried out the verification of high-level efficiency, pin-point accuracy.
Background technology
Transformer is main equipment of electric system, and its safe operation is most important.Standards such as " DL/T 596-1996 power equipment preventive trial rules ", " GB1094.1～1094.5 power transformers " explicitly call at power transformer technical parameters such as the open circuit loss that joins from dispatching from the factory to, need in the link such as preventive trial transformer, load loss, no-load current, load current, short-circuit impedance, impedance voltage to measure.In light of this situation, domestic a lot of power test instrument manufacturing firm begins development, produces comprehensive parameter tester of transformer.But according to investigations, the comprehensive parameter tester of transformer quality on the home market is uneven, and this class testing instrument is carried out verification and provides reliable checking data that the quality that improves preventive trial is had positive effect to the user.
The method of present domestic relevant technologies unit verification comprehensive parameter tester of transformer is still taked " conventional standard source method ", its principle of work mainly is: utilize general standard signal source (as three table calibrating installations) to inject standard three-phase voltage, the current signal that presets to tested comprehensive parameter tester of transformer, and to the test product readout, thereby reach purpose to the test product verification.This " conventional standard source method " has many deficiencies, makes a concrete analysis of as follows:
The dirigibility of the voltage of at first, utilization " conventional standard source method " output, electric current, angle, frequency is limited.Because such standard set-up ultimate principle is at voltage table, reometer, power meter design, the space that is provided with that offers the testing person only is voltage, electric current, power and angle etc., and frequency range also is all in about power frequency.If the testing person utilizes such standard set-up need carry out complicated calculating in advance to the measurement function (as open circuit loss, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, power factor etc.) of comprehensive parameter tester of transformer, just standard values such as the open circuit loss that presets, load loss being converted into basic voltage, electric current, angle equivalent earlier exports again, so not only increase workload, also increased the probability of verification miswork.
Secondly, utilize " conventional standard source method " standard signals such as voltage, electric current, angle, frequency of output, parameters such as its range, accuracy also have different with the requirement of carrying out comprehensive parameter tester of transformer verification work.
In sum, at present domestic can reference " conventional standard source method " when being used for that comprehensive parameter tester of transformer carried out verification work, have that work is loaded down with trivial details, calculation of complex, make mistakes easily, the incomplete deficiency such as adaptation of range and accuracy.Be necessary to design calibration device for comprehensive parameter tester of transformer with strong points, that accuracy is high, to improve the efficient of relevant verification work.
Summary of the invention
The objective of the invention is provides special a kind of calibration device for comprehensive parameter tester of transformer at existing " the conventional standard source method " weak point when comprehensive parameter tester of transformer being carried out verification work, has good specific aim, the accuracy height.
To achieve these goals, technical solution of the present invention provides a kind of calibration device for comprehensive parameter tester of transformer, comprise host computer and slave computer, described host computer comprises and is used to accept the canonical parameter information that the testing person presets, and canonical parameter information is converted into corresponding electric current automatically, voltage, phase place essential information and the user interface that links to each other with the control module input end of slave computer, described slave computer comprises with the user interface of host computer and linking to each other, receive the information of host computer and send the control module of control word, the output of described control module links to each other with 6 road signal generator modules respectively, wherein the output of 3 road signal generator modules connects the input of corresponding 3 road precision constant current source modules respectively, the input of 3 road accurate voltage source modules that the output of other 3 road signal generator modules connects respectively.
Aforesaid calibration device for comprehensive parameter tester of transformer, it is characterized in that: described 3 road precision constant current source modules can link to each other with external Range Extension module, be that described 3 road precision constant current source modules can also can be exported through the accurate up-flow of external Range Extension module directly as the output of 3 phase currents; Described 3 road accurate voltage source modules can link to each other with external Range Extension module, promptly 3 road accurate voltage source modules can be directly as the output of 3 phase voltages, also can be through the output of boosting of external Range Extension module precision.
Under the control action of input of the information of user interface and control module, each signal generator module can produce amplitude independently, frequency, the level and smooth sinusoidal signal unit of height that phase angle is adjustable, these sinusoidal signal unit can be used for encouraging separate precision constant current source module, the accurate voltage source module of back level, thereby form 3 separate phase currents and 3 phase voltages, 3 phase currents and 3 phase voltages can also can be passed through external Range Extension module up-flow, boost and expand output directly as standard signal output.
Aforesaid calibration device for comprehensive parameter tester of transformer, it is characterized in that: user interface is accepted the canonical parameter that the testing person presets, and canonical parameter mainly comprises: open circuit loss, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, power factor, frequency etc.The beneficial effect of this design is: the testing person can directly test to comprehensive parameter tester of transformer after importing these parameters targetedly, and need not again these parameters manually be calculated and be decomposed into essential informations such as abstract electric current, voltage, phase place, thereby improved work efficiency, reduced error probability.
Aforesaid calibration device for comprehensive parameter tester of transformer, it is characterized in that: described signal generator module comprises DDS chip AD9951, take circuit design, produce easily with the Direct Digital synthetic technology of DDS chip that frequency stabilization is adjustable, amplitude stability is adjustable, phase stabilization is adjustable and the level and smooth stable sinusoidal signal of height of curve based on DDS chip AD9951.The beneficial effect of this design is: these sinusoidal signal unit will be used for encouraging rearmounted current source circuit and constant voltage power supply circuit, the frequency of utilizing the sinusoidal signal that the DDS technology produces is except can be the 50Hz first-harmonic, also can be configured to various frequencies easily, 6 road signals are separate, and highly stable; The amplitude resolution of sinusoidal signal can reach 14, satisfies needs of the present invention; Though the more important thing is that the sinusoidal signal curve is still for discretize, but the refresh interval of curve amplitude is less than 1us, very level and smooth, can't see " ladder " by ordinary oscilloscope, the effect of this " height of curve is level and smooth " can be avoided taking follow-up filtering circuit fully, thus the negative effect of amplitude that the filtering circuit that significantly reduces brings and phase place.
Aforesaid calibration device for comprehensive parameter tester of transformer, it is characterized in that: described 6 road signal generator modules are separate, between described signal generator module and precision constant current source module, signal generator module and accurate voltage source module also comprise signal isolation circuit.Precision constant current source module and accurate voltage source module have been taked the design proposal of electrical isolation, 6 road sine voltage signals of i.e. 6 road signal generator modules release are separate, and all be incorporated into 3 road precision constant current source modules and 3 road accurate voltage source modules through precision current type voltage transformer (VT) or the accurate amplifier of isolating, wherein, constant current source module, voltage source module for power supply power supply be electrical isolation separately, thereby further produces the current source of 3 tunnel electrical isolation and the voltage source of 3 tunnel electrical isolation.The beneficial effect of this design is: 3 road precision constant current source modular design parameters are every road output 5A electric current, 3 road precision voltage source modular design parameters are every road output 200V voltage, if do not take the electrical isolation means, then 6 road sine voltage signals of signal generator module release are directly introduced corresponding constant current source, voltage source module, because big electric current, high voltage are easy to crosstalk mutually by common return, even take " a bit altogether " etc. design proposal, also difficultly obtain good circuit production effect; If take the design proposal of electrical isolation, then each electric current, voltage produce the mutual electrical isolation in loop, and signal cross-talk etc. significantly reduce, and help improving actual energy parameter of the present invention.
Aforesaid calibration device for comprehensive parameter tester of transformer, it is characterized in that: designed the output area that external Range Extension module is used to expand 3 phase currents and 3 phase voltages, external Range Extension module comprise the accurate up-flow mutual inductor of 3 road 5A/30A and 3 road 200V/500V the precision mutual inductor that boosts.The beneficial effect of this design is: as if direct design current by precision constant current source circuit acquisition 30A pin-point accuracy is the comparison difficulty, and the direct simultaneously design voltage by accurate voltage source module acquisition 500V pin-point accuracy also is the comparison difficulty; If take external Range Extension module, then the pressure of output of prime electric current and voltage output will reduce greatly, by selecting suitable accurate big electric current amplifier and accurate high pressure amplifier to get final product the three-phase output that easy high-performance realizes electric current 5A and voltage 200V, can realize gamut output by external Range Extension module again, succinct reliable.
The invention has the beneficial effects as follows: use this calibration device for comprehensive parameter tester of transformer, can be to the main measurement function of comprehensive parameter tester of transformer promptly: measurement functions such as open circuit loss, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, power factor, frequency carry out the verification of high-level efficiency, pin-point accuracy; And the characteristics at the comprehensive parameter tester of transformer measurement function have designed user interface, the user can directly preset standard values such as open circuit loss, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, power factor, frequency targetedly, and do not need additionally manually to be converted into again corresponding electric current, voltage, angle equivalence, the efficient of the verification work that helps improving.
Description of drawings
Fig. 1 is the wiring diagram that carries out comprehensive parameter tester of transformer verification work with " conventional standard source method ";
Fig. 2 is the wiring diagram that carries out comprehensive parameter tester of transformer verification work with the embodiment of the invention;
Fig. 3 is the calibration device for comprehensive parameter tester of transformer slave computer theory diagram of the embodiment of the invention;
Fig. 4 is the circuit theory diagrams of control module in the embodiment of the invention;
Fig. 5 is the circuit theory diagrams of 1 road signal generator module in the embodiment of the invention;
Fig. 6 is the circuit theory diagrams of 1 tunnel Signal Spacing part in the embodiment of the invention;
Fig. 7 is the circuit theory diagrams of 1 road precision constant current source module in the embodiment of the invention;
Fig. 8 is the circuit theory diagrams of 1 road accurate voltage source module in the embodiment of the invention.
Embodiment
The present invention is described further below in conjunction with drawings and Examples.
Referring to shown in Figure 1, be the wiring diagram that carries out comprehensive parameter tester of transformer verification work with " conventional standard source method ".Its principle of work is: " conventional standard source method " generally possesses standard signals such as electric current, voltage, power function is set, when the testing person carries out comprehensive parameter tester of transformer verification work, at first need standard values such as open circuit loss, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, power factor are converted into the standard value that the standard signal source of routines such as abstract voltage, electric current, phase place or power can directly be provided with, inject tested comprehensive parameter tester of transformer then.The deficiency of this method is: verification work specific aim is poor, work is loaded down with trivial details, calculation of complex, make mistakes easily, range and accuracy not exclusively adapt to etc.
Referring to shown in Figure 2, be the wiring diagram that carries out comprehensive parameter tester of transformer verification work with the embodiment of the invention.Its principle of work is: the testing person directly carries out open circuit loss targetedly by calibration equipment host computer interface, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, the setting of standard values such as power factor, parameter is set to be calculated automatically through present embodiment, be converted into abstract voltage, electric current, essential informations such as phase place, pass to the calibration equipment slave computer according to communication protocol through under the communication serial port, the calibration equipment slave computer is concrete topworks, converts testing person's down-transmitting data to concrete voltage, electric current, phase signal also is injected into tested comprehensive parameter tester of transformer.The advantage of this design proposal is: the testing person can directly test to comprehensive parameter tester of transformer after host computer sets up standard parameter targetedly, and need not again these parameters manually be calculated and be decomposed into essential informations such as abstract electric current, voltage, phase place, thereby improved work efficiency, reduced error probability.
Referring to shown in Figure 3, be the calibration device for comprehensive parameter tester of transformer slave computer theory diagram of the embodiment of the invention.Under the control action of the parameter setting of user interface and control module, 6 road signal generator modules can produce amplitude independently, frequency, 6 tunnel level and smooth sinusoidal signal unit of height that phase angle is adjustable, 3 road precision constant current source modules, 3 road accurate voltage source modules that the sinusoidal signal of these generations is isolated through 6 tunnel signal isolation circuit input back level electric power, thereby form 3 separate phase currents and 3 phase voltages, 3 phase currents and 3 phase voltages can also can be passed through external Range Extension module up-flow, boost and expand output directly as standard signal output.
Referring to shown in Figure 4, be the circuit theory diagrams of control module in the embodiment of the invention.U1 is control chip C8051F020, and its work is: send control word to 6 road signal generator modules, start 6 road signal generator module work then to produce corresponding sinusoidal signal; The content of control word mainly comprises information such as amplitude, frequency, phase place.
Referring to shown in Figure 5, be the circuit theory diagrams of 1 road signal generator module in the embodiment of the invention.U8 produces chip for the DDS signal, and the U8 model is AD9951, and U8 produces the difference sinusoidal signal between CH1 and CH1/ pin under the control of U1, and the sinusoidal model of this difference is enlarged into single-ended sinusoidal signal Sig_in by precision instrument amplifier U2, and the U2 model is INA128; Meet together through 6 road signal generator modules and to obtain 6 tunnel single-ended sinusoidal signals after amplifying, 6 tunnel signal isolation circuit of input back level respectively.
Referring to shown in Figure 6, be the schematic diagram of 1 tunnel signal isolation circuit in the embodiment of the invention.The single-ended sinusoidal signal Sig_in of U2 output, through a series connection precision resistance RJ2, be input to the former limit of accurate voltage mutual inductor T1, T1 is 0.05 grade of precision current type voltage transformer (VT), the secondary current signal of T1 inserts the current/voltage translation circuit of accurate amplifier U35 and RJ49 composition, the U35 model is OPA228, and the output signal Sig_out of U35 and the output signal Sig_in of U2 are linearly proportional, and the signal electrical isolation; Meet the single-ended sinusoidal signals that obtain 6 tunnel process electrical isolation together through 6 tunnel signal isolation circuit, respectively 3 road precision constant current source modules and 3 road accurate voltage source modules of input back level.
Referring to shown in Figure 7, be the circuit theory diagrams of 1 road precision constant current source module in the embodiment of the invention, this figure is an example with A phase precision constant current source module.This module is single-ended output voltage controlled current source circuit, and this module is by the big electric current amplifier of precision U15, accurate amplifier U17, and the accurate sampling resistor RJ51 in the precision resistance of 4 1K and 1 Europe constitutes, and wherein the U15 model is PA12A, and the U17 model is OPA228; Current output terminal of this module is Ia_out, and the output voltage signal Sig_out of its output current and U35 is linearly proportional, is voltage-controlled current source.
Referring to shown in Figure 8, be the circuit theory diagrams of 1 road accurate voltage source module in the embodiment of the invention, this figure is an example with A phase accurate voltage module.The related output signal Sig_in_4 of signal isolation circuit is incorporated into the input end in the same way of the accurate high pressure amplifier U36 of accurate voltage source module, this module is utilized precision resistance RJ2K and RJ20K, constitute ratio amplifying circuit in the same way, U36 output signal U a_out is the linear scaling amplifying signal of input signal Si g_in_4.
In addition to the implementation, all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within protection scope of the present invention.
Claims (7)
1. calibration device for comprehensive parameter tester of transformer, comprise host computer and slave computer, described host computer comprises and is used to accept the canonical parameter information that the testing person presets, and canonical parameter information is converted into corresponding electric current automatically, voltage, phase place essential information and the user interface that links to each other with the control module input end of slave computer, described slave computer comprises with the user interface of host computer and linking to each other, receive the information of host computer and send the control module of control word, it is characterized in that: the output of described control module links to each other with 6 road signal generator modules respectively, wherein the output of 3 road signal generator modules connects the input of corresponding 3 road precision constant current source modules respectively, and the output of other 3 road signal generator modules connects the input of 3 road accurate voltage source modules respectively.
2. calibration device for comprehensive parameter tester of transformer according to claim 1 is characterized in that: described 3 road precision constant current source modules link to each other with external Range Extension module respectively; Described 3 road accurate voltage source modules link to each other with external Range Extension module respectively.
3. calibration device for comprehensive parameter tester of transformer according to claim 2 is characterized in that: external Range Extension module comprise the accurate up-flow mutual inductor of 3 road 5A/30A and 3 road 200V/500V the precision mutual inductor that boosts.
4. according to claim 1 or 2 or 3 described calibration device for comprehensive parameter tester of transformer, it is characterized in that: described canonical parameter comprises: open circuit loss, load loss, no-load current, load current, short-circuit impedance, impedance voltage, power, power factor, frequency.
5. according to claim 1 or 2 or 3 described calibration device for comprehensive parameter tester of transformer, it is characterized in that: described signal generator module comprises DDS chip AD9951.
6. according to claim 1 or 2 or 3 described calibration device for comprehensive parameter tester of transformer, it is characterized in that: described 6 road signal generator modules are separate, between described signal generator module and precision constant current source module, signal generator module and accurate voltage source module also comprise signal isolation circuit.
7. calibration device for comprehensive parameter tester of transformer according to claim 6, it is characterized in that: described signal isolation circuit comprises series connection precision resistance RJ2, the former limit of series connection precision resistance RJ2 and accurate voltage mutual inductor T1 joins, and the current/voltage translation circuit that the secondary of accurate voltage mutual inductor T1 and accurate amplifier U35 and RJ49 form joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101816957A CN101614800B (en) | 2009-07-27 | 2009-07-27 | Calibration device for comprehensive parameter tester of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101816957A CN101614800B (en) | 2009-07-27 | 2009-07-27 | Calibration device for comprehensive parameter tester of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101614800A true CN101614800A (en) | 2009-12-30 |
| CN101614800B CN101614800B (en) | 2011-08-10 |
Family
ID=41494546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101816957A Active CN101614800B (en) | 2009-07-27 | 2009-07-27 | Calibration device for comprehensive parameter tester of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101614800B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565562A (en) * | 2010-12-31 | 2012-07-11 | 上海市电力公司 | Comprehensive testing device for electrical test of transformer |
| CN104122523A (en) * | 2014-07-30 | 2014-10-29 | 哈尔滨朗昇电气股份有限公司 | Circuit for testing time parameters of verifying devices for high-voltage switch testers |
| CN105067878A (en) * | 2015-07-22 | 2015-11-18 | 国家电网公司 | Transformer power characteristic live-line tester |
| CN105478378A (en) * | 2015-11-17 | 2016-04-13 | 杭州西力电能表制造有限公司 | Automatic detection device for industrial frequency transformer and detection control method of automatic detection device |
| CN106558991A (en) * | 2015-09-30 | 2017-04-05 | 佳能株式会社 | Power supply device and image processing system |
| CN107561472A (en) * | 2017-09-29 | 2018-01-09 | 杭州安脉盛智能技术有限公司 | For the sensor of transformer and the method for diagnosing status of monitoring device |
| CN109085430A (en) * | 2018-08-07 | 2018-12-25 | 中国电力科学研究院有限公司 | A kind of method and system being lost for monitoring power transformer on-line |
| CN109901460A (en) * | 2018-12-19 | 2019-06-18 | 北京航天计量测试技术研究所 | A kind of calibration system of II grades of rolling control unit testing instrument |
| CN110208633A (en) * | 2019-05-30 | 2019-09-06 | 裕文新兴电子(深圳)有限公司 | Transformer parameter test macro, test method and computer storage medium |
| CN114236271A (en) * | 2021-12-01 | 2022-03-25 | 国网山东省电力公司电力科学研究院 | On-site calibration method and system for transformer comprehensive detection device |
-
2009
- 2009-07-27 CN CN2009101816957A patent/CN101614800B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565562A (en) * | 2010-12-31 | 2012-07-11 | 上海市电力公司 | Comprehensive testing device for electrical test of transformer |
| CN104122523A (en) * | 2014-07-30 | 2014-10-29 | 哈尔滨朗昇电气股份有限公司 | Circuit for testing time parameters of verifying devices for high-voltage switch testers |
| CN104122523B (en) * | 2014-07-30 | 2017-12-01 | 哈尔滨朗昇电气运维服务有限公司 | The circuit of testing high voltage brake switch tester calibration equipment time parameter |
| CN105067878B (en) * | 2015-07-22 | 2018-11-09 | 国家电网公司 | Transformer efficiency characteristic testing instrument for electrified |
| CN105067878A (en) * | 2015-07-22 | 2015-11-18 | 国家电网公司 | Transformer power characteristic live-line tester |
| CN106558991A (en) * | 2015-09-30 | 2017-04-05 | 佳能株式会社 | Power supply device and image processing system |
| CN105478378A (en) * | 2015-11-17 | 2016-04-13 | 杭州西力电能表制造有限公司 | Automatic detection device for industrial frequency transformer and detection control method of automatic detection device |
| CN107561472A (en) * | 2017-09-29 | 2018-01-09 | 杭州安脉盛智能技术有限公司 | For the sensor of transformer and the method for diagnosing status of monitoring device |
| CN107561472B (en) * | 2017-09-29 | 2019-12-10 | 杭州安脉盛智能技术有限公司 | Condition diagnosis method for sensor and monitoring device of transformer |
| CN109085430A (en) * | 2018-08-07 | 2018-12-25 | 中国电力科学研究院有限公司 | A kind of method and system being lost for monitoring power transformer on-line |
| CN109901460A (en) * | 2018-12-19 | 2019-06-18 | 北京航天计量测试技术研究所 | A kind of calibration system of II grades of rolling control unit testing instrument |
| CN110208633A (en) * | 2019-05-30 | 2019-09-06 | 裕文新兴电子(深圳)有限公司 | Transformer parameter test macro, test method and computer storage medium |
| CN114236271A (en) * | 2021-12-01 | 2022-03-25 | 国网山东省电力公司电力科学研究院 | On-site calibration method and system for transformer comprehensive detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101614800B (en) | 2011-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101614800B (en) | Calibration device for comprehensive parameter tester of transformer | |
| CN101393255B (en) | Verifying apparatus for zinc oxide arrester tester | |
| CN101770006A (en) | Novel method for checking electronic transducer | |
| CN202305785U (en) | Calibrating device based on tracing technology for 0.05-level DC electric energy meter | |
| CN205787084U (en) | Great current mutual inductor automatic calibrator | |
| CN203745634U (en) | Three-phase electric power harmonic wave standard source | |
| CN103558571A (en) | Calibration system of electronic transformer and merging unit | |
| CN205898852U (en) | System takes place for base mark signal | |
| CN102081150B (en) | 'Virtual complex impedance method'-based power frequency line parameter tester calibration device and method | |
| CN201514474U (en) | Parameter test instrument of current transformer | |
| CN102866378B (en) | Voltage or current transformer on-line test device and voltage or current transformer on-line test method | |
| CN201859212U (en) | Novel calibration device of electronic type mutual inductor | |
| CN108181600B (en) | Capacitor voltage transformer testing device | |
| CN204177954U (en) | A kind of 35kV global error of high voltage energy metering installation verification system | |
| CN102928641A (en) | Electronic current transformer | |
| CN204515117U (en) | A kind of detection device for voltage mutual inductor adopting broad frequency signal source | |
| CN203551762U (en) | Electronic instrument transformer and merging unit verification system | |
| CN201289525Y (en) | Checkout device for zinc oxide lightning arrester tester | |
| CN113884966B (en) | AC/DC sensor broadband calibrator and performance detection calibration method thereof | |
| CN103543429A (en) | Micro current transformer calibrator | |
| CN102621519A (en) | Tester for electric energy metering device | |
| CN104316889A (en) | Virtual load method-based generator rotor alternating current impedance tester calibration device | |
| CN205229295U (en) | A device for photovoltaic power generation electric energy measurement monitoring | |
| CN203811648U (en) | Standard sample for testing electromagnetic compatibility of lamp product | |
| CN203465372U (en) | Once through-flow three-phase simultaneous measurement detector for transformer station device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELECTRIC POWER CO. STATE ELECTRIC NET CROP Effective date: 20121030 Owner name: ELECTRIC POWER RESEARCH INSTITUTE, JIANGSU ELECTRI Free format text: FORMER OWNER: JIANGOU PROVINCIAL POWER TEST INST CO., LTD. Effective date: 20121030 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210029 NANJING, JIANGSU PROVINCE TO: 210036 NANJING, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121030 Address after: 210036 Fenghuang West Street, Jiangsu, Nanjing, China, No. 243 Patentee after: Electric Power Research Institute of Jiangsu Electric Power Company Patentee after: Jiangsu Electric Power Company Patentee after: State Grid Corporation of China Address before: 210029 No. 243 Fenghuang West Street, Jiangsu, Nanjing Patentee before: Jiangou Provincial Power Test Inst Co., Ltd. |