CN106501750A - A kind of voltage transformer site error detects secondary wiring device - Google Patents
A kind of voltage transformer site error detects secondary wiring device Download PDFInfo
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- CN106501750A CN106501750A CN201611094904.0A CN201611094904A CN106501750A CN 106501750 A CN106501750 A CN 106501750A CN 201611094904 A CN201611094904 A CN 201611094904A CN 106501750 A CN106501750 A CN 106501750A
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- outlet
- voltage transformer
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- wiring terminal
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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
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- 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 voltage transformer site error detects secondary wiring device, upper outlet connects voltage transformer to be measured after being wound in take-up rocking bar, lower outlet is wound in connection standard voltage transformer and tester after lower take-up rocking bar, upper outlet and lower outlet are electrically connected by wiring terminal, lower outlet stage casing is provided with transition joint, standard potential transformer connects wiring terminal and tester through transition joint, and further connects voltage transformer to be measured by wiring terminal.During Site Detection, upper outlet is passed connection voltage transformer to be measured from upper line outlet, lower outlet passes connection standard voltage transformer and tester from lower line outlet, you can start to test, and wiring is easy, accurate, work on the spot amount is little, simultaneously solve voltage transformer to be measured, individually line between standard potential transformer and tester, easily form the loop line around standard potential transformer, produce electromagnetic induction, and then the problem of impact testing result, improve the accuracy of detection.
Description
Technical field
The present invention relates to power equipment performance detection technical field, and in particular to a kind of voltage transformer site error detection
Secondary wiring device.
Background technology
In power system, the error of widely used voltage transformer directly affects electric energy and calculates and trade settlement, seriously
When the even whole power system of entail dangers to normal operation, belong to state compulsion detection project, voltage transformer error entered
During row Site Detection, need to carry out its secondary connection between testing equipment and voltage transformer to be measured, its secondary connection is generally deposited
In problems with：
First, wiring is more and complicated, easy wrong, and work on the spot amount is big, and work efficiency is low.
2nd, wiring trend easily forms the closed-loop path around voltage transformer to be measured and testing equipment, mutual to voltage
As electromagnetic induction forms faradic current when sensor error is detected, cause error measure inaccurate, have a strong impact on detection knot
Really.
Content of the invention
It is an object of the invention to provide a kind of voltage transformer site error detects secondary wiring device, current electricity is solved
Press the secondary connection existed during mutual inductor on site error-detecting loaded down with trivial details and secondary connection moves towards to affect testing result accuracy
Problem.
The present invention is achieved through the following technical solutions：
A kind of voltage transformer site error detects secondary wiring device, it is characterised in that including casing 1, wiring terminal
2nd, upper line outlet 3, upper outlet 4, upper take-up rocking bar 5, lower line outlet 6, lower outlet 7, lower take-up rocking bar 8；
The wiring terminal 2 is embedded in 1 side wall of casing, and a side terminal of wiring terminal 2 is arranged at outside casing 1, opposite side
Terminals are arranged in casing 1, specifically include outlet wiring terminal 9 and lower outlet wiring terminal 10；
The upper outlet 4 adopts multicore cable, the upper outlet wiring terminal 9 of one end connection to be located at the terminals in casing 1, separately
One ends wound pass through upper line outlet 3 after upper take-up rocking bar 5 after external voltage transformer to be measured；
The lower outlet 7 adopts multicore cable, the lower outlet wiring terminal 10 of one end connection to be located at the terminals in casing 1,
The other end pass through lower line outlet 6 after being wound in lower take-up rocking bar 8 after external standard potential transformer and tester；
The upper outlet wiring terminal 9 is located at the terminals outside casing 1 and is located at outside casing 1 with lower outlet wiring terminal 10
Terminals are electrically connected by wire；
Described upper outlet wiring terminal (9) are electrically connected by wire with voltage load box positioned at casing (1) terminals outward.
Especially, the stage casing of the lower outlet 7 is provided with transition joint 11, and standard potential transformer connects through transition joint 11
Tester and lower outlet wiring terminal 10.
Especially, the upper outlet 3 is electric using the different multicore of internal single cable electric wire exocuticle color with lower outlet 7
Cable, and the wiring terminal solid colour of every individual wires exocuticle color and corresponding connection.
Especially, 1 material of the casing is plastics.
Especially, in the casing 1, horizontal direction is provided with dividing plate 12, and casing 1 is divided into upper box 13 and lower box 14,
The upper line outlet 3, upper outlet 4, upper take-up rocking bar 5 are arranged at upper box 13, the lower line outlet 6, lower outlet 7, lower take-up
Rocking bar 8 is arranged at lower box 14.
The present invention compared with prior art, has the following advantages and advantages：
A kind of voltage transformer site error of the present invention detects that secondary wiring device, upper outlet are wound in take-up and shake
Connect voltage transformer to be measured after bar, lower outlet is wound in connection standard voltage transformer and tester after lower take-up rocking bar, on
Outlet and lower outlet are electrically connected by wiring terminal, and lower outlet stage casing is provided with transition joint, and standard potential transformer is indirect through in
Head connection wiring terminal and tester, and voltage transformer to be measured is further connected by wiring terminal.During Site Detection, will be upper
Outlet passes connection voltage transformer to be measured from upper line outlet, lower outlet from lower line outlet pass connection standard voltage transformer and
Tester, you can start to test, wiring are easy, accurate, and work on the spot amount is little, high working efficiency, while solving voltage to be measured
Individually line between transformer, standard potential transformer and tester, easily forms the ring around standard potential transformer
Shape circuit, produces electromagnetic induction, and then the problem of impact testing result, improves the accuracy of detection.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the voltage transformer site error detection secondary wiring device front view that the embodiment of the present invention 1 is provided.
Fig. 2 is the voltage transformer site error detection secondary wiring device right view that the embodiment of the present invention 1 is provided.
Fig. 3 is that the voltage transformer site error detection secondary wiring device cabling mode that the embodiment of the present invention 1 is provided shows
It is intended to.
Fig. 4 is the high-end difference measuring circuits schematic diagram of capacitance type potential transformer.
Fig. 5 is capacitance type potential transformer low side difference measuring circuits schematic diagram.
Two when Fig. 6 is the method detection voltage mutual inductor on site error of the employing low side error of measurement that the embodiment of the present invention 1 is provided
Secondary termination wiring diagram.
Two when Fig. 7 is the method detection voltage mutual inductor on site error of the employing high-end error of measurement that the embodiment of the present invention 1 is provided
Secondary termination wiring diagram.
Labelling and corresponding parts title in accompanying drawing：
1- casings, 2- wiring terminals, the upper line outlets of 3-, the upper outlets of 4-, the upper take-up rocking bars of 5-, go out under line outlet, 7- under 6-
Outlet wiring terminal under the upper outlet wiring terminal of take-up rocking bar, 9-, 10- under line, 8-, 11- transition joints, 12- dividing plates, on 13-
Casing, 14- lower boxes.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
<<JJG1021 electric power mutual-inductors>>In vertification regulation the method for assigned voltage transformer test include high-end error of measurement and
Low side error of measurement, as shown in Figure 4, Figure 5, Fig. 4 is the circuit theory diagrams of high-end error of measurement, and Fig. 5 is the circuit theory diagrams of low side error of measurement, its
In, LZ1～LZn is resonance reactor, and P0 is standard potential transformer, and CVT is tested capacitance type potential transformer, and Y1, Y2 are
Voltage load box, by taking the method using low side error of measurement as an example, detects secondary connecing to voltage transformer site error of the present invention
Line apparatus are illustrated.
As shown in Figure 1 and Figure 2, Fig. 1 is the voltage transformer site error detection secondary connection that the embodiment of the present invention 1 is provided
Device front view, Fig. 2 are the voltage transformer site error detection secondary wiring device right view that the embodiment of the present invention 1 is provided.
As shown in fig. 6, when Fig. 6 is the method detection voltage mutual inductor on site error of the employing low side error of measurement that the embodiment of the present invention 1 is provided
Secondary wiring device wiring diagram.
In the present embodiment, voltage transformer site error detection secondary wiring device include casing 1, wiring terminal 2,
Upper line outlet 3, upper outlet 4, upper take-up rocking bar 5, lower line outlet 6, lower outlet 7, lower take-up rocking bar 8.
In the casing 1, horizontal direction is provided with dividing plate 12, and casing 1 is divided into upper box 13 and lower box 14, casing 1
Side wall is embedded in wiring terminal 2, and a side terminal of wiring terminal 2 is arranged at outside casing 1, and another side terminal is arranged at casing 1
Interior, wiring terminal 2 includes that outlet wiring terminal 9 and lower outlet wiring terminal 10, upper outlet wiring terminal 9 are embedded in upper box 13
Right side wall, lower outlet wiring terminal 10 are embedded in 14 right side wall of lower box.
Upper box side-wall hole, line outlet 3 in setting are provided with take-up rocking bar 5 in top box body, upper outlet 4 adopts 6 lists
The multicore cable of strand insulation copper core composition, the terminal crimping cold-pressed terminal of multicore cable, cold-pressed terminal type are connected with cable
Electric elements wiring terminal types match, and connection upper outlet wiring terminal 9 in 4 one end of upper outlet is located at the terminals in casing 1
(binding post answered by every wire pair), the other end is external to be measured after passing through upper line outlet 3 after being wound in take-up rocking bar 5
Secondary wiring terminals a1, n1, a2, n2, a3, n3 of voltage transformer, so as to connect three groups of windings of voltage transformer to be measured, meter
Amount winding, protective winding and measurement winding.If voltage transformer to be measured is two groups of windings (such as only has metering, protective winding or meter
Amount, measurement winding etc.), then go up 4 Central Plains of outlet should connect the 3rd group around 2 lines hanging, remaining 4 line connects
a1、n1、a2、n2.The terminals that upper outlet wiring terminal 9 is located at outside casing 1 are simultaneously connected with load box.
Lower box side-wall hole, arranges lower line outlet 6, is provided with lower take-up rocking bar 8 in nowel body, and lower outlet 7 adopts leading portion 2
Core, the multicore cable of 3 core of back segment, the terminal crimping cold-pressed terminal of multicore cable, cold-pressed terminal type and the connected electrical equipment unit of cable
Part binding post type matching, the cold-pressed terminal of lower 7 leading portion of outlet, 2 core are defined as x1, x2, and the cold-pressed terminal of 3 core of back segment is fixed
Justice is x3, x4, x5, and under x1, x2 connection, outlet wiring terminal 10 is located at the terminals in casing 1, meanwhile, lower outlet wiring terminal
The terminals that 10 terminals being located at outside casing 1 are located at outside casing 1 with upper outlet wiring terminal 9 are electrically connected by wire, so as to
Realize the connection of lower outlet 7 and Secondary Connections of PTs terminal.Lower 7 back segment of outlet is wound in lower take-up rocking bar 8, after pass through
Lower line outlet 6 passes rear external standard potential transformer and tester.Wherein, x3, x4, x5 connection tester, x3 places wire
The other end by transition joint (being defined as x6) connection standard voltage transformer, the other end of x4 places wire is X1, X4 institutes
Transition joint (being defined as x7) is provided with the stage casing of wire, by x7 connection standard voltage transformers, X5 places wire another
Hold as X2.
During on-the-spot test, upper outlet 4 passes the secondary wiring terminals of rear external voltage transformer to be measured from upper line outlet 3
A1, n1, a2, n2, a3, n3, meanwhile, upper outlet wiring terminal 9 is located at the terminals outside casing 1 and connects 3 load boxs, lower outlet
After 7 pass from line outlet 6, x3, x4, x5 connect tester, and x6, x7 connection standard voltage transformer, wiring are completed, gone out under
Line wiring terminal 10 is located at the wire company that the terminals outside casing 1 and upper outlet wiring terminal 9 are located at the terminals outside casing 1
Connect, x1, x2 correspondingly connect a1, n1, mutually test to the one of voltage transformer；In the same manner, other two-phase voltage transformer is completed
Test.After the completion of test, the wiring of voltage transformer side to be measured, standard potential transformer side and tester side, shake are removed
Upper take-up rocking bar 5 and lower take-up rocking bar 8 withdraw upper outlet 4 and lower outlet 7.
Further, as the preferred implementation of the present embodiment, the wiring terminal adopts wiring hole, the upper outlet
4 and 7 all internal single cable electric wire exocuticle colors of lower outlet different, the color one of wiring hole color and connected wire
Cause, so as to the probability malfunctioned during reducing wiring, realize fast-wiring.
Further, as the preferred implementation of the present embodiment, 1 material of the casing is plastics.
It should be noted that dividing plate can be not provided with casing 1, limit under casing top and casing only from locus
Portion, the part for being arranged at upper box are correspondingly arranged in casing top, and the part for being arranged at lower box is correspondingly arranged in lower box.
As shown in figure 3, the voltage transformer site error detection secondary wiring device that Fig. 3 is the embodiment of the present invention 1 to be provided
Cabling mode schematic diagram.
The voltage transformer site error detection secondary connection includes voltage transformer to be measured and standard potential transformer
Between line, be defined as line I；Line between standard potential transformer and tester, is defined as line II；Mutual induction of voltage to be measured
Line between device and tester, is defined as line III.Wherein, the cabling mode of line I and line II is relatively fixed, and is joined directly together
, III cabling mode of line include shown in Fig. 3 1., 2., 3., 4. four kinds of cabling modes, 1. mode is line III and line
IIth, line I is simultaneously in the side of all electric elements, and 2. mode is circularized with line II, line I for line III, by standard
Voltage transformer is surrounded, and 4. 3. mode is circularized with line II, line I for line III with mode, by normal voltage mutual inductance
Other electric elements such as device and live reactor, transformator surround that (voltage transformer to be measured is capacitance type potential transformer
When scene be provided with reactor, voltage transformer to be measured be electromagnetic potential transformer when scene there is no reactor).Using electrically rule
The method that journey specifies, to being tested using voltage transformer site error in the case of above-mentioned four kinds of cabling modes respectively, specifically
Voltage transformer relevant parameter to be measured is：Model：TYD110/√3-0.02H；Grade：0.2 grade；No-load voltage ratio：110/√3/0.1/√
3；Specified two load：50VA (metering)/100VA (protection)；Build date：In August, 2012, the test result such as table 1 below of acquisition
Shown：
Downward tested voltage transformer error test data is walked in 1 different secondary wiring of table
The test result difference of the voltage transformer site error to be measured obtained using four kinds of different cabling modes is larger,
As shown in Table 1 above, table 1 show voltage transformer error test data to be measured under four kinds of different cabling modes, wherein, f
(%) it is voltage transformer ratio difference, δ (') it is that voltage transformer angle value is poor, the test data according to table 1 can be seen that employing side
The absolute value of the error that 1. formula is tested is minimum, therefore in-site measurement answers employing mode cabling mode 1., secondary connects all
Line is arranged on the side of high pressure equipment, to improve the accuracy of measurement result.But current voltage transformer site error detection
During, line I adopts single-core line, line II to adopt three heart yearns, line III to adopt single-core line, and wiring is more and complicated, easily connects
Mistake, work on the spot amount are big, and work efficiency is low, meanwhile, testing staff needs to be given special attention per section during wiring and leads
Connection between line just can guarantee that employing mode cabling mode 1. carries out the secondary connection of voltage transformer site error detection,
Otherwise wiring move towards easy generation type 2., mode 3., mode cabling mode 4., causing will be mutual for voltage to be measured in secondary connection
Sensor and testing equipment are looped around centre, generate faradic current by electromagnetic induction in secondary connection loop, have impact on mistake
The input signal of difference measurements difference, causes the exception of measurement result.
It should be noted that voltage transformer to be measured during Site Detection, standard potential transformer, tester and scene its
The putting position of his equipment has multiple disposing ways, is only one of them shown in Fig. 3, complicated scene put be more likely formed by
The mode of connection that standard potential transformer is surrounded, voltage transformer site error detection secondary connection dress described in the present embodiment
Put, upper outlet and lower outlet are electrically connected by wiring terminal, lower outlet stage casing is provided with transition joint, and standard potential transformer is through in
Between joint connection wiring terminal and tester, and voltage transformer to be measured is further connected by wiring terminal.During Site Detection,
Upper outlet is passed connection voltage transformer to be measured from upper line outlet, lower outlet passes connection standard mutual induction of voltage from lower line outlet
Device and tester, you can start to test, it is to avoid voltage transformer to be measured, single respectively between standard potential transformer and tester
Solely line, easily forms the loop line around standard potential transformer, produces electromagnetic induction, and then affects asking for testing result
Topic, improves the accuracy of detection.
It should be noted that according to high-end error of measurement and the principle of low side error of measurement, voltage transformer of the present invention is existing
Field error detection secondary wiring device is equally applicable to the method measurement voltage transformer site error using high-end error of measurement.As schemed
Shown in 7, Fig. 7 is secondary when being the method detection voltage mutual inductor on site error of the high-end error of measurement of employing that the embodiment of the present invention 1 is provided
Termination wiring diagram.Area by method of the secondary wiring device for the method for high-end error of measurement and for low side error of measurement
The difference of field connection order is not only that.
Technical scheme, upper outlet connect voltage transformer to be measured after being wound in take-up rocking bar, lower outlet is twined
Connection standard voltage transformer and tester after lower take-up rocking bar is around in, upper outlet and lower outlet are electrically connected by wiring terminal,
Lower outlet stage casing is provided with transition joint, and standard potential transformer connects wiring terminal and tester through transition joint, and by connecing
Line terminal further connects voltage transformer to be measured.During Site Detection, upper outlet is passed connection voltage to be measured from upper line outlet
Transformer, lower outlet pass connection standard voltage transformer and tester from lower line outlet, you can start to test, wiring simplicity,
Accurately, work on the spot amount is little, high working efficiency, while solving voltage transformer to be measured, standard potential transformer and tester
Between individually line, easily form the loop line around standard potential transformer, produce electromagnetic induction, and then affect inspection
The problem of result is surveyed, the accuracy of detection is improve.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, the be should be understood that specific embodiment that the foregoing is only the present invention is not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements that within the spirit and principles in the present invention, is done etc. all should include
Within protection scope of the present invention.
Claims (5)
1. a kind of voltage transformer site error detects secondary wiring device, it is characterised in that including casing (1), wiring terminal
(2), upper line outlet (3), upper outlet (4), upper take-up rocking bar (5), lower line outlet (6), lower outlet (7), lower take-up rocking bar (8)；
Wiring terminal (2) are embedded in casing (1) side wall, and a side terminal of wiring terminal (2) is arranged at casing (1) outward, separately
One side terminal is arranged in casing (1), specifically includes outlet wiring terminal (9) and lower outlet wiring terminal (10)；
Upper outlet (4) adopt multicore cable, upper outlet wiring terminal (9) of one end connection to be located at the terminals in casing (1),
The other end is wound in external voltage transformer to be measured after take-up rocking bar (5) is passed by upper line outlet (3)；
Lower outlet (7) adopt multicore cable, lower outlet wiring terminal (10) of one end connection to be located at the wiring in casing (1)
End, the other end are wound in external standard potential transformer and tester after lower take-up rocking bar (8) pass by lower line outlet (6)；
Described upper outlet wiring terminal (9) are located at casing (1) terminals outward and are located at casing (1) with lower outlet wiring terminal (10)
Outer terminals are electrically connected by wire；
Described upper outlet wiring terminal (9) are electrically connected by wire with voltage load box positioned at casing (1) terminals outward.
2. a kind of voltage transformer site error according to claim 1 detects secondary wiring device, it is characterised in that institute
The stage casing for stating lower outlet 7 is provided with transition joint 11, and standard potential transformer connects tester through transition joint 11 and lower outlet connects
Line terminal 10.
3. a kind of voltage transformer site error according to claim 1 detects secondary wiring device, it is characterised in that institute
Outlet (3) is stated with lower outlet (7) using the multicore cable that internal single cable electric wire exocuticle color is different, and the single electricity per root
The wiring terminal solid colour of line exocuticle color and corresponding connection.
4. a kind of voltage transformer site error according to claim 1 detects secondary wiring device, it is characterised in that institute
Casing (1) material is stated for plastics.
5. a kind of voltage transformer site error according to claim 1 detects secondary wiring device, it is characterised in that institute
State the interior horizontal direction of casing (1) and be provided with dividing plate (12), casing (1) is divided into upper box (13) and lower box (14), described on
Line outlet (3), upper outlet (4), upper take-up rocking bar (5) are arranged at upper box (13), lower line outlet (6), lower outlet (7),
Lower take-up rocking bar (8) are arranged at lower box (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094904.0A CN106501750A (en) | 2016-12-02 | 2016-12-02 | A kind of voltage transformer site error detects secondary wiring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094904.0A CN106501750A (en) | 2016-12-02 | 2016-12-02 | A kind of voltage transformer site error detects secondary wiring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106501750A true CN106501750A (en) | 2017-03-15 |
Family
ID=58330390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611094904.0A Pending CN106501750A (en) | 2016-12-02 | 2016-12-02 | A kind of voltage transformer site error detects secondary wiring device |
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| CN (1) | CN106501750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108630420A (en) * | 2018-07-16 | 2018-10-09 | 国网四川省电力公司电力科学研究院 | A kind of three element combination transformer of three-phase |
| CN108931754A (en) * | 2018-09-26 | 2018-12-04 | 云南电网有限责任公司电力科学研究院 | A kind of current transformer polarity and secondary winding use detection method with |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108630420A (en) * | 2018-07-16 | 2018-10-09 | 国网四川省电力公司电力科学研究院 | A kind of three element combination transformer of three-phase |
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| CN108931754A (en) * | 2018-09-26 | 2018-12-04 | 云南电网有限责任公司电力科学研究院 | A kind of current transformer polarity and secondary winding use detection method with |
| CN108931754B (en) * | 2018-09-26 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Current transformer secondary winding mixed use detection method |
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Application publication date: 20170315 |
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