CN203761124U - Voltage converting circuit and voltage converting device having voltage converting circuit - Google Patents
Voltage converting circuit and voltage converting device having voltage converting circuit Download PDFInfo
- Publication number
- CN203761124U CN203761124U CN201420016707.7U CN201420016707U CN203761124U CN 203761124 U CN203761124 U CN 203761124U CN 201420016707 U CN201420016707 U CN 201420016707U CN 203761124 U CN203761124 U CN 203761124U
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- China
- Prior art keywords
- voltage
- circuit
- contactor
- relay
- voltage conversion
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- Expired - Lifetime
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- 238000006243 chemical reaction Methods 0.000 claims description 35
- 238000009413 insulation Methods 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- Relay Circuits (AREA)
Abstract
The utility model provides a voltage converting circuit and a voltage converting device having a voltage converting circuit. The voltage converting circuit comprises a first voltage circuit, a second voltage circuit, AC contactors disposed on the first voltage circuit and the second voltage circuit, and an AC voltage circuit. The AC contactors enable the first voltage circuit and the second voltage circuit to be switched and controlled to be on and off through a voltage relay unit arranged on the second voltage circuit. The AC voltage circuit is simultaneously connected with the voltage relay unit and the AC contactors and is switched on when the running second voltage circuit is damaged. Through adoption of the voltage converting circuit, switching of voltage circuits is rapidly achieved, loss of electricity is reduced, economic benefits are increased, and an electrical network can function in a safer and more stable manner.
Description
Technical field
The utility model relates to a kind of change-over circuit, particularly a kind of voltage conversion circuit and the voltage conversion device with this voltage conversion circuit.
Background technology
The present situation of current existing transformer station be when one group of voltage transformer because of earth fault or because of Electric Network Higher Harmonic, switching overvoltage, suffer the factors such as lightning voltage, when first and second fuse blows or voltage transformer body are damaged, need dispatcher receiving the change over switch of notifying operating personnel to remove substation field manual switch voltage transformer secondary side after equipment alarm, by whole loads of Electro-metering in the secondary voltage Lai Dai transformer station of another group voltage transformer and scheduling on-line monitoring.Poor because of conversion life period, so easily cause Electro-metering error, dispatch on-line monitoring quality thereby increase and affect.
Utility model content
Problem to be solved in the utility model is that a kind of voltage conversion device of realizing the voltage conversion circuit of the quick conversion of circuit and having this voltage conversion circuit is provided.
In order to address the above problem, the utility model provides a kind of voltage conversion circuit, comprise the first potential circuit and second voltage circuit, also comprise: be arranged on the A.C. contactor on described the first potential circuit and second voltage circuit, described A.C. contactor carries out switching controls by the voltage relay group realization being arranged on described second voltage circuit to described the first potential circuit and second voltage circuit between connecting and disconnecting; And being connected with described voltage relay group and A.C. contactor, and the alternating voltage circuit of connecting in the time that the described second voltage circuit moving damages simultaneously.
As preferably, described voltage relay group comprises three voltage relays, described voltage relay comprises relay coil, relay normally open contact and relay normally-closed contact, and three described voltage relays are connected in parallel on described second voltage circuit by relay coil respectively.
As preferably, described A.C. contactor comprises multiple contactor normally opened contacts, has auxiliary contact group and the contactor coil of multiple contactor normally-closed contacts, described contactor normally opened contact is corresponding being connected on each circuit of described the first potential circuit respectively, and described contactor normally-closed contact is corresponding being connected on each circuit of described second voltage circuit respectively.
As preferably, described relay normally-closed contact and described contactor coil are connected on respectively on described alternating voltage circuit.
As preferably, described the first potential circuit and second voltage circuit are three-phase voltage circuit.
A kind of voltage conversion device, comprise voltage conversion circuit described in claim 1-5 any one, have open the door and the casing of ground connection terminal, for the terminal board of circuit switching and be loaded on insulation board in described casing and that be fixed with described voltage conversion circuit and terminal board.
As preferably, described casing both sides offer ventilating opening, on described ventilating opening, are covered with dustcloth.
As preferably, between described voltage relay and insulation board and between A.C. contactor and described insulation board, be all fixed with crash roll.
As preferably, described in open the door and be provided with the seal weatherstrip on opening the door described in being positioned at the face of casing laminating.
The beneficial effects of the utility model are, thereby voltage conversion circuit utilizes voltage relay to move in the time of voltage failure drives A.C. contactor action, realizes fast the conversion of potential circuit, reduces electric quantity loss, increase economic efficiency, strengthen the safe and stable operation of electrical network; And voltage automatic transfer equipment has not only merged the advantage of voltage conversion circuit, and arrange because device is independent, be convenient to dispatcher's observation, allow to find more timely the damage of circuit.
Brief description of the drawings
Fig. 1 is the structure chart of the voltage conversion circuit of embodiment of the present utility model.
Fig. 2 is the structure chart (each parts being only shown, the connection electric wire between not shown terminal board, voltage relay and A.C. contactor in figure) of the voltage conversion device of embodiment of the present utility model.
Fig. 3 is the A-A sectional side view (each parts being only shown, the connection electric wire between not shown terminal board, voltage relay and A.C. contactor in figure) of Fig. 2.
Reference numeral:
1-the first potential circuit; 2-second voltage circuit; 3-A.C. contactor; 4-auxiliary contact group; 5-the first voltage relay; 6-alternating voltage circuit; 7-relay coil; 8-relay normally-closed contact; 9-contactor coil; 10-contactor normally opened contact; 11-contactor normally-closed contact; 12-casing; 13-opens the door; 14-insulation board; 15-terminal board; 16-door attraction device; 17-second voltage relay; 18-tertiary voltage relay; 19-bolt; 20-ventilating opening; 21-dustcloth; 22-crash roll; 23-seal weatherstrip.
Embodiment
Be described in detail of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of voltage conversion circuit, comprise the first potential circuit 1 and second voltage circuit 2, also comprise: be arranged on the A.C. contactor 3 on the first potential circuit 1 and second voltage circuit 2, this A.C. contactor 3 is by the voltage relay group control being arranged on second voltage circuit 2, thereby the first potential circuit 1 and second voltage circuit 2 are switched between connecting and disconnecting; And connect voltage relay group and A.C. contactor 3 and the alternating voltage circuit 6 of conducting in the time that the second voltage circuit 2 moving damages simultaneously.In the present embodiment, this first potential circuit 1 and second voltage circuit 2 are three-phase voltage circuit, are divided into A, B, C three-phase.
Further, voltage relay group comprises three voltage relays, be respectively the first voltage relay 5, second voltage relay 17 and tertiary voltage relay 18, three voltage relays of this voltage relay group include relay coil 7, relay normally open contact (not shown) and relay normally-closed contact 8, and be to be all connected in parallel on second voltage circuit 2 by relay coil 7 respectively, relay coil 7 two ends of the first voltage relay 5 connect respectively AB two phase voltages, relay coil 7 two ends of second voltage relay 17 connect respectively BC two phase voltages, relay coil 7 two ends of tertiary voltage relay 18 connect respectively AC two phase voltages.
Three voltage relays are set to be compared and two relays are set in the advantage in when work are, in the time having at least arbitrary phase voltage fault, as the B phase voltage fault of second voltage circuit 2, connecting so the first voltage relay 5 of B phase voltage and second voltage relay 17 just can move and make A.C. contactor 3 conducting the first potential circuits 1, more reliably safer, prevent one of them voltage relay fault and make potential circuit convert failed.
A.C. contactor 3 comprises three contactor normally opened contacts 10, has auxiliary contact group 4 and the contactor coil 9 of three contactor normally-closed contacts 11, wherein contactor normally opened contact 10 corresponding being connected on three circuits of the first potential circuit 1 respectively, three contactor normally-closed contacts 11 of auxiliary contact group 4 are corresponding being connected on three circuits of second voltage circuit 2 respectively.The relay normally-closed contact 8 of contactor coil 9, the first voltage relay 5, second voltage relay 17 and the tertiary voltage relay 18 of A.C. contactor 3 is connected on alternating voltage circuit 6 jointly, in the time of the 2 normal work of second voltage circuit, the charged normal work of the first voltage relay 5, second voltage relay 17 and tertiary voltage relay 18, because being subject to the electromagnetic force of relay coil, its relay normally open contact is all closed, and relay normally-closed contact 8 all disconnects.Now, alternating voltage circuit 6, for opening circuit, does not drive its contactor normally opened contact 10 and contactor normally-closed contact 11 to move thereby the contactor coil 9 of A.C. contactor 3 does not receive alternating current, ensures the normal operation of second voltage circuit 2.And in the time that the arbitrary loop of second voltage circuit 2 is damaged, connected voltage relay just no current flows through, thereby the electromagnetic force of relay coil 7 be zero cause voltage relay relay normally open contact disconnect, relay normally-closed contact 8 closures, now, alternating voltage circuit is switched on, the contactor coil 9 of A.C. contactor 3 receives and produces electromagnetic attraction after alternating current and make the contactor normally opened contact 10 of A.C. contactor 3 all closed, contactor normally-closed contact 11 all disconnects and then connects the first potential circuit 1, disconnects second voltage circuit 2.
Wherein the first potential circuit 1 is connected respectively voltage transformer with the input of second voltage circuit 2, and output is connected to the metering protection screen of transformer station, makes dispatcher carry out real time measure.
The utility model discloses a kind of voltage conversion device simultaneously, as shown in Figure 2 and Figure 3, comprise above-mentioned voltage conversion circuit, have open the door 13 and the casing 12 of ground connection terminal (not shown), for the terminal board 15 of circuit switching and be loaded on insulation board 14 in casing 12 and that be fixed with voltage conversion circuit and terminal board 15.Wherein voltage relay group, A.C. contactor 3 are fixed on insulation board 14 by bolt 19, and between three voltage relays of voltage relay group and insulation board 14 and be equipped with crash roll 22 between A.C. contactor 3 and insulation board 14, while action for voltage relay and A.C. contactor 3, produce buffering.Casing 12 both sides are also respectively provided with ventilating opening 20, are covered with dustcloth 21(not shown on this ventilating opening 20), to prevent dust access to plant inside.
In addition, be positioned at the seal weatherstrip 23 opening the door on 13 opening the door to be provided with on 13 faces of fitting with casing 12, in the present embodiment open the door 13 with on casing 12, be also provided with the door attraction device 16 coordinating to prevent from opening the door arbitrarily unlatching.This opens the door and preferably adopts transparent material to make, and observes with handled easily personnel.
Above embodiment is only exemplary embodiment of the present utility model, is not used in restriction the utility model, and protection range of the present utility model is defined by the claims.Those skilled in the art can, in essence of the present utility model and protection range, make various amendments or be equal to replacement the utility model, this amendment or be equal to replacement and also should be considered as dropping in protection range of the present utility model.
Claims (9)
1. a voltage conversion circuit, comprise the first potential circuit and second voltage circuit, it is characterized in that, also comprise: be arranged on the A.C. contactor on described the first potential circuit and second voltage circuit, described A.C. contactor carries out switching controls by the voltage relay group realization being arranged on described second voltage circuit to described the first potential circuit and second voltage circuit between connecting and disconnecting; And being connected with described voltage relay group and A.C. contactor, and the alternating voltage circuit of connecting in the time that the described second voltage circuit moving damages simultaneously.
2. voltage conversion circuit according to claim 1, it is characterized in that, described voltage relay group comprises three voltage relays, described voltage relay comprises relay coil, relay normally open contact and relay normally-closed contact, and three described voltage relays are connected in parallel on described second voltage circuit by relay coil respectively.
3. voltage conversion circuit according to claim 1, it is characterized in that, described A.C. contactor comprises multiple contactor normally opened contacts, has auxiliary contact group and the contactor coil of multiple contactor normally-closed contacts, described contactor normally opened contact is corresponding being connected on each circuit of described the first potential circuit respectively, and described contactor normally-closed contact is corresponding being connected on each circuit of described second voltage circuit respectively.
4. voltage conversion circuit according to claim 3, is characterized in that, described relay normally-closed contact and described contactor coil are connected on respectively on described alternating voltage circuit.
5. according to the voltage conversion circuit one of claim 1-3 Suo Shu, it is characterized in that, described the first potential circuit and second voltage circuit are three-phase voltage circuit.
6. a voltage conversion device, it is characterized in that, comprise voltage conversion circuit described in claim 1-5 any one, have open the door and the casing of ground connection terminal, for the terminal board of circuit switching and be loaded on insulation board in described casing and that be fixed with described voltage conversion circuit and terminal board.
7. voltage conversion device according to claim 6, is characterized in that, described casing both sides offer ventilating opening, on described ventilating opening, are covered with dustcloth.
8. voltage conversion device according to claim 6, is characterized in that, between described voltage relay and insulation board and between A.C. contactor and described insulation board, is all fixed with crash roll.
9. voltage conversion device according to claim 6, is characterized in that, described in open the door and be provided with the seal weatherstrip on opening the door described in being positioned at the face of casing laminating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016707.7U CN203761124U (en) | 2014-01-10 | 2014-01-10 | Voltage converting circuit and voltage converting device having voltage converting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016707.7U CN203761124U (en) | 2014-01-10 | 2014-01-10 | Voltage converting circuit and voltage converting device having voltage converting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761124U true CN203761124U (en) | 2014-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420016707.7U Expired - Lifetime CN203761124U (en) | 2014-01-10 | 2014-01-10 | Voltage converting circuit and voltage converting device having voltage converting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203761124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701945A (en) * | 2015-03-17 | 2015-06-10 | 中国工商银行股份有限公司 | Monitoring device for charging voltage of uninterruptible power supply storage battery |
-
2014
- 2014-01-10 CN CN201420016707.7U patent/CN203761124U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701945A (en) * | 2015-03-17 | 2015-06-10 | 中国工商银行股份有限公司 | Monitoring device for charging voltage of uninterruptible power supply storage battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
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| CX01 | Expiry of patent term |