CN106990379A - Current transformer error check test system - Google Patents
Current transformer error check test system Download PDFInfo
- Publication number
- CN106990379A CN106990379A CN201710370811.4A CN201710370811A CN106990379A CN 106990379 A CN106990379 A CN 106990379A CN 201710370811 A CN201710370811 A CN 201710370811A CN 106990379 A CN106990379 A CN 106990379A
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- CN
- China
- Prior art keywords
- data
- current transformer
- network system
- test
- experiment
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- 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.)
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Classifications
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- 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
Abstract
The invention discloses a kind of current transformer error check test system, it includes P1, S1 experiment terminal, and P1, S1 experiment terminal are respectively connected to current transformer primary side and secondary side；Tetra- testing terminals of A, B, C, N, access current transformer load-side, by programme-control, and A, B, C single-phase straight resistance data and the alternate straight resistance data of AB, BC, CA can be tested automatically；Database, typing has network system basic data and calculation formula；CPU, intelligence reads test data, transfers network system basic data and formula, quickly calculates the current transformer and whether meets relay protection requirement, and by experimental data, conclusion automatic report generation；Display, for showing test data and form；And USB port, for exporting form.The present invention can effectively change current transformer error and check the present situation that efforts amount is big, easily malfunction, and greatly mitigate numerous and diverse workload.
Description
Technical field
The present invention relates to electric power system control and protection field, especially a kind of current transformer error check test system
System.
Background technology
The degree of accuracy of the size of Current Transformer Secondary load impedance to transformer has a significant impact.Work as secondary load impedence
During beyond the secondary load impedence allowed, transformer iron core enters saturation state, and transformer error is greatly increased, and causes relay
The misoperation of protection.
Estimated current transformer error test job is divided into the characteristic test of current transformer side and load-side direct resistance metering.
Both sides experimental rig is separate, and test data result is simply to be enumerated, it is impossible to is calculated and divided by effective data
Analysis, draws the whether qualified conclusion of data.During by manually checking, most producers can not grasp computational reasoning side well
Method, and data volume is more, calculation formula, coefficient are easily obscured, and need to consult a large amount of network system data.Checking step is：From two
Set test instrument exports basic data respectively, and --- ----consulting network system basic data ----inquires about calculating to-screening critical data
Formula, design factor ----carrying out numerous and diverse calculate ----result of calculation is compared with measured result.Need check data up on
Thousand, work numerous and diverse and inefficiency.
In addition, when carrying out load-side direct resistance metering, experimental rig can only test single-phase data, it is necessary to manually be repeated
Plug test wire could complete three-phase and the alternate test directly hindered.Because the load of bed rearrangement transformer substation current transformer winding is numerous,
This test job task is heavy.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of check of the current transformer error of reliable operation and efficiency high
Pilot system.
In order to solve the above-mentioned technical problem, current transformer error check test system of the invention includes
P1 tests terminal and S1 experiment terminals, for measurement current transform er performance data, wherein P1 experiment terminal accesses
Current transformer primary side, S1 experiment terminal access Current Transformer Secondaries side, and tested using C-V characteristic method；
Tetra- testing terminals of A, B, C, N, directly hinder data, wherein tetra- testing terminals of A, B, C, N connect for measuring load-side
Enter current transformer load-side, by programme-control, the single-phase straight resistance data of A, B, C can be tested automatically and AB, BC, CA are alternate
Straight resistance data；
Database, typing has network system basic data and calculation formula；
CPU, intelligence reads reasonable network system basic data and formula in test data, called data storehouse, quick to calculate
Go out the current transformer and whether meet relay protection requirement, and by experimental data, conclusion automatic report generation；
Display, for showing test data and form；And
USB port, for exporting form.
The beneficial effects of the invention are as follows：The present invention can effectively change current transformer error and check that efforts amounts is big, hold
Error-prone present situation, greatly mitigates numerous and diverse workload, non-conforming equipment is found in time, it is ensured that the correct operation of relay protection,
Operation of power networks reliability is improved, can be in power system popularity application.
Brief description of the drawings
Fig. 1 is the flow chart of current transformer error check test system of the present invention.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description：
Referring to Fig. 1, current transformer error check test system of the invention includes
P1 tests terminal and S1 experiment terminals, for measurement current transform er performance data, wherein P1 experiment terminal accesses
Current transformer primary side, S1 experiment terminal access Current Transformer Secondaries side, and tested using C-V characteristic method；
Tetra- testing terminals of A, B, C, N, directly hinder data, wherein tetra- testing terminals of A, B, C, N connect for measuring load-side
Enter current transformer load-side, by programme-control, the single-phase straight resistance data of A, B, C can be tested automatically and AB, BC, CA are alternate
Straight resistance data；
Database, typing has network system basic data and calculation formula；
CPU, intelligence reads reasonable network system basic data and formula in test data, called data storehouse, quick to calculate
Go out the current transformer and whether meet relay protection requirement, and by experimental data, conclusion automatic report generation；
Display, for showing test data and form；And
USB port, for exporting form.
Current transformer error test system measurement current transform er performance data and load-side can directly hinder number simultaneously
According to.As shown in drawings, when testing current transformer characteristic, system sets P1, S1 to test terminal, is surveyed using C-V characteristic method
Have a try, in load-side direct resistance metering, system sets tetra- testing terminals of A, B, C, N, by programme-control, can test automatically
A, B, C single-phase straight resistance data and the alternate straight resistance data of AB, BC, CA.Device shifts to an earlier date network system basic data, calculation formula
It is stored in database, above test data is intelligently read by CPU, reasonable network system basic data and formula is transferred, soon
Speed calculates whether the current transformer meets relay protection requirement.Experimental data, conclusion can be passed through with automatic report generation
USB port is exported.The system can check 10%, 5% error.
In summary, present disclosure is not limited in the above embodiments, and those skilled in the art can be
Propose other embodiments within the technological guidance's thought of the present invention, but these embodiments be included in the scope of the present invention it
It is interior.
Claims (1)
1. a kind of current transformer error check test system, it is characterised in that：Including
P1 tests terminal and S1 experiment terminals, for measurement current transform er performance data, wherein P1 experiment terminal access electric currents
Transformer primary side, S1 experiment terminal access Current Transformer Secondaries side, and tested using C-V characteristic method；
Tetra- testing terminals of A, B, C, N, data, wherein tetra- testing terminal access electricity of A, B, C, N are directly hindered for measuring load-side
Current transformer load-side, by programme-control, the single-phase straight resistance data of A, B, C and the alternate straight resistance of AB, BC, CA can be tested automatically
Data；
Database, typing has network system basic data and calculation formula；
CPU, intelligence reads reasonable network system basic data and formula in test data, called data storehouse, quickly calculates this
Whether current transformer meets relay protection requirement, and by experimental data, conclusion automatic report generation；
Display, for showing test data and form；And
USB port, for exporting form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370811.4A CN106990379A (en) | 2017-05-23 | 2017-05-23 | Current transformer error check test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370811.4A CN106990379A (en) | 2017-05-23 | 2017-05-23 | Current transformer error check test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106990379A true CN106990379A (en) | 2017-07-28 |
Family
ID=59420234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710370811.4A Pending CN106990379A (en) | 2017-05-23 | 2017-05-23 | Current transformer error check test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106990379A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2248003C2 (en) * | 2003-05-05 | 2005-03-10 | Пензенский государственный университет | Device for calibrating instrument current transformers |
| CN202351421U (en) * | 2011-11-29 | 2012-07-25 | 厦门红相电力设备股份有限公司 | Error detection device for current transformer |
| CN103293507A (en) * | 2012-03-02 | 2013-09-11 | 北京瑞恒超高压电器研究所 | Online detection method of error of current transformer |
| CN204009039U (en) * | 2014-07-14 | 2014-12-10 | 国家电网公司 | A kind of current transformer error curve auxiliary testing system |
-
2017
- 2017-05-23 CN CN201710370811.4A patent/CN106990379A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2248003C2 (en) * | 2003-05-05 | 2005-03-10 | Пензенский государственный университет | Device for calibrating instrument current transformers |
| CN202351421U (en) * | 2011-11-29 | 2012-07-25 | 厦门红相电力设备股份有限公司 | Error detection device for current transformer |
| CN103293507A (en) * | 2012-03-02 | 2013-09-11 | 北京瑞恒超高压电器研究所 | Online detection method of error of current transformer |
| CN204009039U (en) * | 2014-07-14 | 2014-12-10 | 国家电网公司 | A kind of current transformer error curve auxiliary testing system |
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Application publication date: 20170728 |
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| WD01 | Invention patent application deemed withdrawn after publication |