CN108181603A - A kind of three-phase mutual inductor simulates linked network detecting system - Google Patents
A kind of three-phase mutual inductor simulates linked network detecting system Download PDFInfo
- Publication number
- CN108181603A CN108181603A CN201810182701.XA CN201810182701A CN108181603A CN 108181603 A CN108181603 A CN 108181603A CN 201810182701 A CN201810182701 A CN 201810182701A CN 108181603 A CN108181603 A CN 108181603A
- Authority
- CN
- China
- Prior art keywords
- phase
- voltage
- mutual inductor
- current
- booster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 230000001012 protector Effects 0.000 claims abstract description 12
- 238000004088 simulation Methods 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000012795 verification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000016507 interphase Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of three-phase mutual inductors to simulate linked network detecting system; including threephase switch protection location, three-phase regulator, booster, switch protector, three-phase voltage/current standard circuit and three-phase/single-phase test product; the threephase switch protection location connects three-phase regulator; three-phase regulator is also connected with booster; booster is also connected with switch protector; switch protector is also connected with three-phase voltage/current standard circuit, and three-phase voltage/current standard circuit is also connected with three-phase/single-phase test product.The present invention can influence in mutual inductor actual moving process, when the voltage and current parameter of Assembled metering mutual inductor changes as curent change changes the accuracy of voltage, voltage change between electric current and the voltage and current of three-phase；And by simulating under the alternate abnormal power supply of power circuit appearance and mutual inductor extreme operating condition, mutual inductor operating parameter changes, the verification to mutual inductor operation guarantee ability.
Description
Technical field
The present invention relates to transformer technical field, specifically a kind of three-phase mutual inductor simulates linked network detecting system.
Background technology
Mutual inductor is one of core equipment in electric system, by power circuit high current, high voltage signal according to
Defined accuracy is converted to low current, low voltage signal, provides secondary device use.Its main function be electrical energy measurement,
It measures, protect and controls, be isolated and standardize.As the sensing element being widely used on power circuit, during due to operation
When the operating parameter of mutual inductor itself or power circuit changes, the working condition of mutual inductor will be directly influenced, is occurred
Mutual inductor metering is inaccurate, and transducing signal deviation causes switch to malfunction, and will directly affect mutual inductor operational safety, serious conditions
Lower breakdown can cause power grid to be paralysed.
The existing accuracy test to electric power mutual-inductor in China, including national authority department such as national electric appliance state net Wuhan high pressure
Research institute, Xi'an high pressure research institute, Suzhou DianKeYuan etc., the tester used is single-phase measurement.For actual use in
The single-phase transformers of AC three-phase or three-phase mutual inductor, the precision measured just do not account for influencing each other yet.Although state
It is also provided in family's standard GB20840.4 three-phase mutual inductors, alternate application high tension voltage is applied to detecting current error influence amount
Electric current is added also to be limited to the influence of single-phase error detection to detecting voltage error influence amount, do not provide three-phase different conditions
Under error influence and compare online.
In the project tested according to national Specification electric power mutual-inductor, routine test and pattern examination for manufacturing firm
It tests and provides, but practical mutual inductor running environment can not be verified completely in the project.As mutual inductor operates in electricity
In a state that line of force road is faulty, for different line fault, mutual inductor reflects electrical parameter and also differs, Ke Yibang
Operation maintenance personnel is helped fast and effectively to fix a breakdown；The for another example existing defects inside mutual inductor, when normal electricity circuit is run, mutually
The phenomenon that electrical parameter and mutual inductor operation damage that sensor is reflected.
The error-detecting of mutual inductor three-phase, interphase interference test and offer simulation on-line operation system as a result, for existing
The mutual inductor detection and experiment that three-phase electrical power system uses more fully are supplemented.
Invention content
The purpose of the present invention is to provide a kind of three-phase mutual inductors to simulate linked network detecting system, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides following technical solution：
A kind of three-phase mutual inductor simulates linked network detecting system, including threephase switch protection location, three-phase regulator, boosting
Device, switch protector, three-phase voltage/current standard circuit and three-phase/single-phase test product, the threephase switch protection location connection three
Phase voltage regulator, three-phase regulator are also connected with booster, and booster is also connected with switch protector, and switch protector is also connected with three-phase electricity
Pressure/current standard circuit, three-phase voltage/current standard circuit are also connected with three-phase/single-phase test product.
Further technical solution as the present invention：The threephase switch protection location includes A.C. contactor KM and open circuit
Device QF.
Further technical solution as the present invention：The three-phase regulator is potentiometer TK.
Further technical solution as the present invention：The booster is current transformer T.
Compared with prior art, the beneficial effects of the invention are as follows：1st, the high pressure of three-phase hanging net operation experiment is not direct
On high-tension line, but low pressure mains-supplied is used, generate high-voltage test electric power, test effect is identical and safe and reliable.
2nd, the high pressure generated can be adjusted arbitrarily, realized different high-voltage tests, be not limited to conventional voltage grade (such as 10
Or 20kV), voltage can be tested in other any 0-20kV.
3rd, the following low currents of three-phase 20kV can be provided directly by transformer, and high current can be occurred by low-tension current
Device is grafted in high tension voltage circuit, high-voltage great-current offer is produced, so as to fulfill the examination of the following mutual inductors of different capabilities 20kV
It tests.
4th, easy simulating grid operation phase shortage, ground connection most common failure state, dismount a fusion tube.
5th, the temperature rise tests such as below 20kV voltage transformers load capacity, limit load can provide actual motion state
Under test data product design and result verification are provided.
6th, temperature rise test is run under the rated current of below 20kV current transformers and voltage, actual response goes out actual motion
Test data under state, the data not tested using low-tension current.
Description of the drawings
Fig. 1 is the whole block diagram of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of three-phase mutual inductor simulation linked network detecting system, including threephase switch protection location, three-phase tune
Depressor, booster, switch protector, three-phase voltage/current standard circuit and three-phase/single-phase test product, the threephase switch protection
Unit connects three-phase regulator, and three-phase regulator is also connected with booster, and booster is also connected with switch protector, and switch protector is also
Three-phase voltage/current standard circuit is connected, three-phase voltage/current standard circuit is also connected with three-phase/single-phase test product.
Threephase switch protection location includes A.C. contactor KM and circuit breaker Q F.Three-phase regulator is potentiometer TK.Boosting
Device is current transformer T.
The present invention operation principle be：1st, three-phase mushing error is tested：
Transformer error tester is detected using single-phase at present, when being verified such as current transformer error, no
It is low pressure or middle pressure mutual inductor by mutual inductor, is all that high current is generated by current lifting device, applies low pressure in test item primary side
Primary current, while standard current transformer is flowed into, the electric current exported by test item and standard is compared realization.For
This detection method is compared with practical operation situation, there is gap, the voltage used first such as middle pressure and it is above when if surpass
0.4kV is crossed, secondly electromagnetic field effects factor, for conventional electromagnetic formula product in three-phase line, detect phase normal power-up, and
Other two-phases are not powered, and running environment is also differed with actual use, and the result detected in this way can not correct response.
It by the use of patented product, when transformer error detects, connects the line according to ct calibrating regulation, adjusts and rise
It flows device electric current or adjusts voltage generation circuit, error is directly read on three-phase tester.So as to easily realize detection three-phase
Electric current and the error and three-phase current of error result or mutual inductor when true environment is run under voltage different situations
With the variation of the interphase interference of voltage to error.Such as during detection current error, it single-phase can apply current detecting error, observation
The influence of three-phase current；It can also be seen that tested mutual inductor operating voltage changes the influence to current error.For example detect voltage
During error, single-phase it can apply voltage detection error with three-phase, the variation of observation voltage between phases is to the shadow of tested phase transformer error
It rings；It can also be seen that tested mutual inductor operating current changes the influence to voltage error.
2nd, mutual inductor operating analysis when circuit is various abnormal：
For high-voltage mutual inductor operate in power circuit it is faulty in the state of, such as three-phase lack phase power supply, single-phase earthing
Different line fault, mutual inductor are converted to carry out voltage and current parameter also to differ.To being researched and analysed in terms of such phenomenological theory
It is very much, also can not failure reproduction but due to once break down, needing to solve as early as possible in actual use.Therefore in this way
This binding isotherm can not be analyzed, it is even more impossible to simulated failure phenomenons to give training.
It can then be realized easily by the use of patented product, if desired for simulation phase-deficient operation, need to only pull up sub-high pressure guarantor
Protect fusion tube, you can the single-phase operation of any phase of simulation, two-phase operation situation after phase shortage.If desired for simulation singlephase earth fault fortune
Row, only need to directly touch any phase high-voltage busbar with grounding rod or ground wire is connected to any phase high-voltage busbar, you can simulation
It has high-voltage earthing failure and metallic earthing failure.These simulated experiments are provided, combining with theoretical analysis can help electric system
Operation maintenance personnel is fast and effectively fixed a breakdown.
3rd, mutual inductor load capacity and abnormal test analysis：
The temperature rise tests such as voltage transformer load capacity, limit load, to the experiment under actual motion state can be provided
Data provide product design and result verification.Respective load is connected in secondary terminals side according to transformer parameter, system is primary
Voltage gradually boosts to test voltage, and carrying out temperature according to the national Specification time rises test.
When occurring abnormal in mutual inductor manufacturing process, the enameled wire epidermis of a such as secondary coil is knocked against hard, and coil is caused to insulate
Short circuit etc. between local damage and the bad lamination of iron core making, is tested, above-mentioned mutual inductor is original by simulating on-line operation
Making bad point will gradually expand, and explode through occurring as soon as the serious destruction of insulation or even product after a period of time.Pass through these simulations
Experiment shoots the arrow at the target to the control of mutual inductor quality point.
Under normal circumstances, current transformer makees operation temperature rise test in domestic testing agency, no matter mutual inductor uses electricity
Pressure is high pressure or low pressure, is all primary secondary to mutual inductor or passes to low-tension current and carry out temperature rise test, and there is no very in this way
The data under actual operating mode are reflected in fact.
It can then be realized easily by the use of patented product, directly apply the rated current of current transformer, while one
Secondary side can apply below 20kV operating voltages, realize to running temperature rise test, the examination that actual response goes out under actual motion state
Data are tested, the data not tested using low-tension current.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (4)
1. a kind of three-phase mutual inductor simulates linked network detecting system, including threephase switch protection location, three-phase regulator, booster,
Switch protector, three-phase voltage/current standard circuit and three-phase/single-phase test product, which is characterized in that the threephase switch protection is single
Member connection three-phase regulator, three-phase regulator are also connected with booster, and booster is also connected with switch protector, and switch protector also connects
Three-phase voltage/current standard circuit is connect, three-phase voltage/current standard circuit is also connected with three-phase/single-phase test product.
2. a kind of three-phase mutual inductor simulation linked network detecting system according to claim 1, which is characterized in that the three-phase is opened
It closes protection location and includes A.C. contactor KM and circuit breaker Q F.
A kind of 3. three-phase mutual inductor simulation linked network detecting system according to claim 1, which is characterized in that the three-phase tune
Depressor is potentiometer TK.
A kind of 4. three-phase mutual inductor simulation linked network detecting system according to claim 1, which is characterized in that the booster
For current transformer T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182701.XA CN108181603A (en) | 2018-03-06 | 2018-03-06 | A kind of three-phase mutual inductor simulates linked network detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182701.XA CN108181603A (en) | 2018-03-06 | 2018-03-06 | A kind of three-phase mutual inductor simulates linked network detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108181603A true CN108181603A (en) | 2018-06-19 |
Family
ID=62553460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810182701.XA Pending CN108181603A (en) | 2018-03-06 | 2018-03-06 | A kind of three-phase mutual inductor simulates linked network detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108181603A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625403A (en) * | 2009-07-28 | 2010-01-13 | 山西省电力公司电力科学研究院 | Testing device for high-voltage three-phase combination transformer |
-
2018
- 2018-03-06 CN CN201810182701.XA patent/CN108181603A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625403A (en) * | 2009-07-28 | 2010-01-13 | 山西省电力公司电力科学研究院 | Testing device for high-voltage three-phase combination transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Behjat et al. | Diagnosing shorted turns on the windings of power transformers based upon online FRA using capacitive and inductive couplings | |
| Hashemnia et al. | Improved power transformer winding fault detection using FRA diagnostics–part 1: axial displacement simulation | |
| Bagheri et al. | Frequency response analysis and short-circuit impedance measurement in detection of winding deformation within power transformers | |
| Behjat et al. | Numerical modelling of transformers interturn faults and characterising the faulty transformer behaviour under various faults and operating conditions | |
| Wu et al. | A new testing method for the diagnosis of winding faults in transformer | |
| CN104217634B (en) | Distribution true-value simulation test method | |
| Venikar et al. | A novel offline to online approach to detect transformer interturn fault | |
| CN102044863A (en) | Electrical switching apparatus including a plurality of rogowski coils and method of calibrating the same | |
| CN101833043A (en) | Method for measuring electric capacity and dielectric loss of capacitance type voltage transformer | |
| CN104155626B (en) | The system that ground potential climbing capacity resisted by a kind of detection voltage transformer | |
| CN103645410B (en) | The dynamic simulator system of small current neutral grounding system and method in a kind of electrical network | |
| CN102608485B (en) | Detection method for zero-sequence current loops of transformer substations | |
| CN102565618A (en) | Method for detecting zero-sequence voltage circuit of transformer substation | |
| Behjat et al. | Characterization of power transformer electromagnetic forces affected by winding faults | |
| Bak et al. | Vacuum circuit breaker modelling for the assessment of transient recovery voltages: Application to various network configurations | |
| CN108089038A (en) | The experimental rig and method that analysis winding defect pyrogenicity influences paper oil insulation performance | |
| CN105866592B (en) | Dynamic passive compensation response wave shape acquisition system and acquisition method | |
| Behjat et al. | An experimental approach for investigating low-level interturn winding faults in power transformers | |
| Czapp et al. | Verification of safety in low-voltage power systems without nuisance tripping of residual current devices | |
| CN209486281U (en) | A kind of three-phase mutual inductor simulation linked network detection system | |
| CN206096309U (en) | Ferroresonance detects and prevention and cure combined test platform | |
| Wang et al. | A leakage protection method for low-voltage power supply systems based on flexible regulation of the neutral point voltage | |
| CN102565614B (en) | Alternating voltage loop test method | |
| CN103592552A (en) | Instrument and method for testing characteristics of overvoltage protection device | |
| Li et al. | Radial stability evaluation and cumulative test of transformer windings under short-circuit condition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 8, Jingtian Road, Jiangshan Economic Development Zone, Jiangshan City, Quzhou City, Zhejiang Province 324102 Applicant after: Zhejiang Tianji Instrument Transformer Co.,Ltd. Address before: No. 2, Shanhai Road, Shanhai Cooperation Zone, Jiangshan Economic Development Zone, Quzhou City, Zhejiang Province, 324123 Applicant before: ZHEJIANG HORIZON INSTRUMENT TRANSFORMERS Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180619 |