CN203405527U - Portable rechargeable DC voltage boosting device - Google Patents
Portable rechargeable DC voltage boosting device Download PDFInfo
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- CN203405527U CN203405527U CN201320464146.2U CN201320464146U CN203405527U CN 203405527 U CN203405527 U CN 203405527U CN 201320464146 U CN201320464146 U CN 201320464146U CN 203405527 U CN203405527 U CN 203405527U
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- 238000012360 testing method Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 abstract description 5
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- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000005674 electromagnetic induction Effects 0.000 description 1
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Abstract
The utility model relates to a portable rechargeable DC voltage boosting device which is applicable to wiring inspection of a secondary voltage loop of an electric energy metering special metering device. The portable rechargeable DC voltage boosting device comprises a shell, a chargeable battery E1, a chargeable battery E2, a chargeable battery E3, a DC voltage meter V, a switch K1, a switch K2 and a switch K3. The positive electrode of the chargeable battery E1 is connected with a terminal X via the switch K1. The positive electrode of the chargeable battery E2 is connected with a terminal Y via the switch K2. The positive electrode of the chargeable battery E3 is connected with a terminal Z via the switch K3. The positive electrode of the DC voltage meter V is connected with a meter pen W. The negative electrodes of the chargeable battery E1, the chargeable battery E2, the chargeable battery E3 and the DC voltage meter V are all connected with ground. A problem that an existing metering special acceptance voltage secondary loop is not qualified is solved by the portable rechargeable DC voltage boosting device. Besides, the portable rechargeable DC voltage boosting device is convenient to carry and convenient and rapid so that safety is ensured simultaneously.
Description
Technical field
The utility model relates to a kind of portable rechargeable direct current pressue device, is applied to the wiring check of electric energy metrical specialty measuring apparatus secondary voltage circuit.
Background technology
At present Southern Hebei Network prefectures and cities electric company metering specialty, when newly-built transformer station and enlarging transformer station measuring apparatus are carried out to onsite acceptance, due to technical conditions restriction, exists metered voltage secondary circuit to check and accept problem not in place.After power transmission, find that the incorrect situation of metered voltage secondary connection happens occasionally, the accurate-metering ，Gei enterprise that affects measuring apparatus causes economic loss.
Use the drawback that exchanges pressue device: (1) is subject to the impact of working-yard condition larger.Because exchange pressue device, need an external AC power that operating voltage is provided, general AC power is positioned at power box for high tension testing or low pressure station becomes ac panel place, sometimes far with voltage transformer (VT) positional distance.Power lead need to lay very long distance, is easy to be subject to rolling of site operation vehicle or various Work tools and causes damage, causes electric leakage to cause accident of human electric shock.When staff connects power lead at ac panel place in addition, owing to apart from very near, easily causing accident of human electric shock with low-voltage electric part (alternating current 220V or exchanges 380V).(2) when using interchange pressue device, once workmen is connected to voltage transformer secondary terminal place by pressurized line, due to electromagnetic induction principle, voltage can instead once be gone up to voltage transformer (VT) by voltage transformer secondary, makes a bus associated therewith and primary equipment charged.If now there is workmen to work on relevant device of voltage transformer (VT), certainly will cause personal electric shock casualty accident, there is very large security risk.Because DC voltage can produce the magnetic flux of alternation unlike alternating voltage, so even when mistake is connected to Secondary Connections of PTs terminal place by direct current pressurized line, also can once not locate to induce voltage at voltage transformer (VT).(3) adopt and exchange pressue device, need to carry power supply bobbin, but also will find suitable power supply box, work together and waste time and energy, carry also inconvenient.(4) exchange pressue device is all generally single-phase pressurization when pressurization,, respectively to a phase, b phase, the pressurization of c phase voltage line, during pressurization, once can only add a phase voltage.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of easy to carry, without the portable rechargeable direct current pressue device of external power supply.
The utility model solves the technical scheme that its technical matters adopts: a kind of portable rechargeable direct current pressue device comprises housing, rechargeable battery E1, rechargeable battery E2, rechargeable battery E3, DC voltage Table V, K switch 1, K switch 2 and K switch 3; The positive pole of described rechargeable battery E1 is through K switch 1 connecting terminal X; The positive pole of described rechargeable battery E2 is through K switch 2 connecting terminal Y; The positive pole of described rechargeable battery E3 is through K switch 3 connecting terminal Z; The positive pole of described DC voltage Table V meets test pencil W; The equal ground connection of negative pole of described rechargeable battery E1, rechargeable battery E2, rechargeable battery E3 and DC voltage Table V.
Described rechargeable battery E1, rechargeable battery E2 and rechargeable battery E3 are all placed in housing; Described DC voltage Table V, K switch 1, K switch 2, K switch 3, terminal X, terminal Y and terminal Z are all positioned on the panel of described housing.
The model of described rechargeable battery E1 is AJ-7.4V/19.8AH; The model of described rechargeable battery E2 is AJ-12V/8.8AH WYSJH; The model of described rechargeable battery E3 is AJ-22.2V/10.4AH.
The beneficial effects of the utility model are as follows: (1) the utility model can solve current metering specialty and check and accept voltage secondary circuit problem not in place; (2) easy to carry, during work without external power supply etc.; (3) once pressurization just can complete to whole piece bus with the wiring check in whole electric energy meter metered voltage loop, convenient and swift; (4) adopt DC voltage can not avoid casualties because error connection is by the anti-primary equipment of delivering to of secondary voltage, security is guaranteed.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is field wiring schematic diagram of the present utility model.
Embodiment
From the embodiment shown in Fig. 1-2, a kind of portable rechargeable direct current pressue device comprises housing, rechargeable battery E1, rechargeable battery E2, rechargeable battery E3, DC voltage Table V, K switch 1, K switch 2 and K switch 3; The positive pole of described rechargeable battery E1 is through K switch 1 connecting terminal X; The positive pole of described rechargeable battery E2 is through K switch 2 connecting terminal Y; The positive pole of described rechargeable battery E3 is through K switch 3 connecting terminal Z; The positive pole of described DC voltage Table V meets test pencil W; The equal ground connection of negative pole of described rechargeable battery E1, rechargeable battery E2, rechargeable battery E3 and DC voltage Table V.
Described rechargeable battery E1, rechargeable battery E2 and rechargeable battery E3 are all placed in housing; Described DC voltage Table V, K switch 1, K switch 2, K switch 3, terminal X, terminal Y and terminal Z are all positioned on the panel of described housing.
The model of described Chargeable direct current battery E1 is AJ-7.4V/19.8AH; The model of described Chargeable direct current battery E2 is AJ-12V/8.8AH WYSJH; The model of described Chargeable direct current battery E3 is AJ-22.2V/10.4AH.
Metered voltage secondary circuit trend (take the 10kV of transformer station as example): the A of voltage transformer (VT), B, C, N are its connection terminal, and a, b, c, n are its secondary wiring terminals.Metered voltage secondary circuit starts access from Secondary Connections of PTs terminal, through voltage transformer (VT) switch cubicle connecting terminal block U1, the little bus of secondary voltage, outlet switch cabinet terminal row U2, test connecting box, finally receive electric energy meter voltage wiring terminal successively, as shown in Figure 2.Visible metered voltage secondary line needs could arrive electric energy meter through a plurality of connection terminals out from Secondary Connections of PTs terminal.And voltage transformer secondary line a lot (protection loop, measuring circuit, measurement loops etc.), easily cause electric energy meter metering secondary voltage line wiring error.
The object that metered voltage secondary circuit checks: newly-built transformer station and enlarging transformer station are before the operation of putting into production, and each specialty of power department will carry out an acceptance inspection to engineering, the operation of can putting into production after acceptance(check).Generally take to entrust site operation personnel to check its secondary voltage circuit, the method for employing is for exchanging pressurization inspection.Owing to being difficult to accomplish, with working medium inspection, so tend to cause some problems: field personnel replies and pressurizeed sometimes, can often not have pressurization; Sometimes really do pressurization inspection, but be only checked through connecting terminal block or test connecting box place, be not checked through electric energy meter tail connection terminal place.So can not guarantee from connecting terminal block or test connecting box whether correct to this section of secondary line electric energy meter.
While carrying out electric energy meter verification first in one month when transformer station's power transmission or after power transmission, just find electric energy meter metering secondary voltage wiring error, this situation happens occasionally.If metered voltage secondary line is just wrong when receiving the little bus of secondary, cause the little bus of whole piece with outlet and inlet wire electric energy meter metered voltage phase sequence mistake all, in the situation that power factor and load are applicable, its bus electric quantity balancing rate is normal, and metrological personnel can't find.The economic loss that fault-time, Yue Chang， enterprise was subject to is just larger.
Utilize the present embodiment can reach examination request for utilization.
Take the 10kV of transformer station as example, and generally each voltage transformer (VT) can be with 20 even more electric energy meters.All electric energy meters as shown in Figure 2, all and be connected on metering secondary voltage little bus.
Utilize the present embodiment to carry out the process of electric energy meter metered voltage secondary circuit wiring checking:
The electric energy meter metering secondary voltage order of connection is from left to right: a phase, b phase, c phase and n phase (zero line) voltage, receive respectively in a phase, b phase, c phase and the n phase (zero line) of the little bus of secondary voltage.
The X end of the present embodiment is received to a phase voltage the end of a thread place of voltage transformer (VT) outlet metered voltage secondary line, Y end is received b phase voltage the end of a thread place of voltage transformer (VT) outlet metered voltage secondary line, Z end is received c phase voltage the end of a thread place of voltage transformer (VT) outlet metered voltage secondary line, the minus earth of three rechargeable battery E1, E2, E3.The model AJ-22.2V/10.4AH of E1, output dc voltage 22V; The model AJ-12V/8.8AH WYSJH of E2, output dc voltage 12V; The model AJ-7.4V/19.8AH of E3, output dc voltage 7V.Require three selected rechargeable battery output voltage numerical value too not approaching, with obstruction free gage work, personnel make correct judgement.
When direct current pressue device adds after voltage metered voltage secondary circuit, test pencil W measures respectively a phase, b phase and the c phase of electric energy meter tail voltage wiring terminal successively, now, because the voltage of direct current pressue device output is different, each phase numerical value of electric energy meter tail voltage is also just different.Inspector shows that from the voltage table of direct current pressue device whether the wiring of numerical value judgement metering secondary voltage is correct.For example: direct current pressue device is respectively 22V, 12V, 7V to voltage transformer secondary a phase, b phase, c phase line institute making alive, and the numerical value showing in direct current pressue device voltage table should should be respectively 22V, 12V, 7V, illustrates that wiring is correct; Otherwise wiring error.If the numerical value showing in direct current pressue device voltage table is 22V, 7V, 12V, b phase and c phase two-phase pressure-wire wiring error are described, b phase and c phase two-phase pressure-wire should be put upside down.Method And Principle for phase three-wire three wiring is identical.
This utility model has not only made up the defect of metering checking and accepting, and a lot of drawbacks of pressue device have been stopped well again to exchange, there is good operability and portability simultaneously, once pressurization just can complete to whole piece bus with the wiring check of whole electric energy meters, convenient and swift.The inventor is engaged in electric energy metrical work for many years, utilizes so far DC voltage pressurization to check that the method for metered voltage secondary circuit wiring does not also have.
Claims (3)
1. a portable rechargeable direct current pressue device, is characterized in that: comprise housing, rechargeable battery E1, rechargeable battery E2, rechargeable battery E3, DC voltage Table V, K switch 1, K switch 2 and K switch 3; The positive pole of described rechargeable battery E1 is through K switch 1 connecting terminal X; The positive pole of described rechargeable battery E2 is through K switch 2 connecting terminal Y; The positive pole of described rechargeable battery E3 is through K switch 3 connecting terminal Z; The positive pole of described DC voltage Table V meets test pencil W; The equal ground connection of negative pole of described rechargeable battery E1, rechargeable battery E2, rechargeable battery E3 and DC voltage Table V.
2. a kind of portable rechargeable direct current pressue device according to claim 1, is characterized in that: described rechargeable battery E1, rechargeable battery E2 and rechargeable battery E3 are all placed in housing; Described DC voltage Table V, K switch 1, K switch 2, K switch 3, terminal X, terminal Y and terminal Z are all positioned on the panel of described housing.
3. a kind of portable rechargeable direct current pressue device according to claim 2, is characterized in that: the model of described rechargeable battery E1 is AJ-7.4V/19.8AH; The model of described rechargeable battery E2 is AJ-12V/8.8AH WYSJH; The model of described rechargeable battery E3 is AJ-22.2V/10.4AH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464146.2U CN203405527U (en) | 2013-08-01 | 2013-08-01 | Portable rechargeable DC voltage boosting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464146.2U CN203405527U (en) | 2013-08-01 | 2013-08-01 | Portable rechargeable DC voltage boosting device |
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| CN203405527U true CN203405527U (en) | 2014-01-22 |
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| CN201320464146.2U Expired - Fee Related CN203405527U (en) | 2013-08-01 | 2013-08-01 | Portable rechargeable DC voltage boosting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316815A (en) * | 2014-10-09 | 2015-01-28 | 国家电网公司 | PT (Potential Transformer) voltage-adding test operation circuit |
| CN109270401A (en) * | 2018-09-10 | 2019-01-25 | 大唐陕西发电有限公司 | A kind of experimental rig and test method for the secondary ray examination in Current Voltage circuit |
-
2013
- 2013-08-01 CN CN201320464146.2U patent/CN203405527U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316815A (en) * | 2014-10-09 | 2015-01-28 | 国家电网公司 | PT (Potential Transformer) voltage-adding test operation circuit |
| CN104316815B (en) * | 2014-10-09 | 2017-11-28 | 国家电网公司 | PT applied voltage test operation circuits |
| CN109270401A (en) * | 2018-09-10 | 2019-01-25 | 大唐陕西发电有限公司 | A kind of experimental rig and test method for the secondary ray examination in Current Voltage circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20160801 |