CN202121232U - Multi-loop coil out type dual supply 10KV power distribution unit - Google Patents

Abstract

Provided is a multi-loop coil out type dual supply 10KV power distribution unit, comprising two identical power distribution cabinets, with each power distribution cabinet further comprising a circuit-connected coil-in isolating circuit, an electrometric circuit, a coil-in turnoff circuit, a voltage-changing lightning circuit, a plurality of coil-out circuits, and a plurality of standby coil-out circuits for carrying out redundancy over the coil-out circuits, wherein the isolating circuit and the electrometric circuit are connected with a first high-voltage mother board respectively; and the coil-in turnoff circuit, the voltage-changing lightning circuit, the coil-out circuits, and the standby coil-out circuits are connected with a second high-voltage mother board respectively. The multi-loop coil out type dual supply 10KV power distribution unit features simple structure, convenient maintenance and operation, high working efficiency, and high reliability and security.

Description

A dual-power 10KV power distribution device with multi-circuit outlet

technical field

The utility model relates to a power distribution device, in particular to a dual-power 10KV power distribution device in a multi-circuit outlet mode.

Background technique

The reliability of the power receiving and distribution system on the user side is one of the important indicators for the assessment of power supply enterprises, and it also reflects the operation status and technical management level of the power supply network. important sign of degree. With the development of the times, the user's power distribution system requires higher reliability, more flexible intelligence, easier operation, more energy-saving operation, simpler maintenance, and higher safety performance.

At present, there is no unified standard user-side power distribution system solution in the Shanghai power market, and the types of customer equipment are relatively complicated, the individual requirements are relatively strong, and the market is becoming more and more open, which brings difficulties to user-side power distribution. Moreover, because the power measuring equipment is not independent, there is also a hidden danger of power theft, which is likely to increase the line loss rate. In addition, there are certain unsafe factors in the existing wiring mode.

Utility model content

The utility model provides a dual-power 10KV power distribution device with multi-circuit outlet mode, which is a single-power 10KV power distribution device with simple structure, convenient operation and maintenance, high work efficiency, safety and reliability, environmental protection and resource saving.

In order to achieve the above purpose, the technical solution of this utility model is to provide a dual-power 10KV power distribution device with multi-circuit outlet mode, which includes two identical power distribution cabinets; each power distribution cabinet further includes:

The incoming line isolation circuit, power measuring circuit, incoming line breaking circuit, voltage change lightning protection circuit, several outgoing line circuits and several spare outgoing line circuits for redundant outgoing line circuits connected by the circuit; the isolation circuit and electric measuring circuit are respectively Connected to the first high-voltage busbar; said incoming line breaking circuit, voltage transformer lightning protection circuit, several outlet circuits and several spare outlet circuits are respectively connected to the second high-voltage busbar.

The incoming line isolation circuit includes a plug and socket connector, the upper end of which is connected to the first high-voltage busbar, and the lower end is connected to an external lead; it also includes a first outgoing line capacitor drawn between the outgoing line circuit breaker and the first high-voltage busbar , which is grounded through the first outgoing line signal lamp; and a second outgoing line capacitor drawn between the outgoing line circuit breaker and the external incoming line, which is grounded through the second outgoing line signal light.

The power measuring circuit includes a current transformer, the primary side of which is connected to the first high-voltage busbar; a power measuring fuse and a voltage transformer connected in sequence are drawn out from the secondary side of the current transformer; the voltage transformer It is a star-to-star connection, through which the neutral point lead wire is grounded; on the secondary side of the current transformer, there are also sequentially connected measuring capacitors and measuring lights; the measuring lights are grounded.

The incoming line breaking circuit includes a circuit-connected outgoing line circuit breaker and a current transformer; the upper end of the outgoing line circuit breaker is connected to the second high-voltage busbar, and the lower end is connected to the second current transformer of the power measuring circuit via a current transformer. Secondary side: the connection line between the current transformer and the secondary side of the current transformer leads to an incoming line capacitor, which is grounded through the incoming line signal lamp.

The voltage change lightning protection circuit includes a plug socket, a voltage change fuse, and a voltage transformer connected in sequence; a surge protector is drawn from the connection line between the upper end of the plug socket and the second high-voltage busbar, and the lower end thereof is grounded; The connecting line between the upper end of the plug socket and the second high-voltage busbar also has a voltage variable capacitor, which is grounded through the voltage variable signal lamp.

The outgoing line circuit and the standby outgoing line circuit each include an outgoing line circuit breaker and a current transformer connected in sequence; the secondary side of the current transformer and the connection line of the external transformer lead out three lines: respectively grounded surge A protector, a grounded isolating switch, and an outgoing line capacitor and an outgoing line signal lamp are connected in sequence, and the outgoing line signal light is grounded.

Each of the power distribution cabinets is provided with two outlet circuits, and correspondingly provided with two backup outlet circuits.

The utility model has the following advantages:

1. Convenient operation and maintenance, high work efficiency, low construction and operation costs, can give full play to the advantages of scale and improve the overall efficiency;

2. The utility model also has the advantages of safety, reliability, advanced technology, wide coverage, environmental protection, resource saving, and lower cost;

3. The structure is simple and easy to use.

Description of drawings

Fig. 1 is a schematic diagram of the circuit structure of the utility model.

Detailed ways

Below according to Fig. 1, specifically illustrate the preferred embodiment of the present utility model:

A dual-power 10KV power distribution device with multi-circuit outgoing lines. The power distribution device includes two identical power distribution cabinets, and each power distribution cabinet enters a power line.

As shown in Figure 1, each power distribution cabinet contains: incoming line isolation circuit 1 for circuit connection, power measuring circuit 2, incoming line breaking circuit 3, voltage change lightning protection circuit 4, several outgoing line circuits 5 and several pairs of outgoing lines The circuit 5 is a redundant backup outlet circuit 51; the isolation circuit 1 and the electricity measuring circuit 2 are respectively connected to the first high-voltage busbar 6; and several spare outlet circuits 51 are connected to the second high-voltage busbar 7 respectively. In this embodiment, two outlet circuits 5 are provided, and two backup outlet circuits 51 are correspondingly provided.

The incoming line isolation circuit 1 includes a plug and socket connector 8, the upper end of which is connected to the first high-voltage busbar 6, and the lower end is connected to an external lead. It also includes a first outgoing line capacitor 9 drawn between the outgoing line circuit breaker 8 and the first high voltage bus bar 6 , which is grounded through the first outgoing line signal lamp 10 . It also includes a second outgoing line capacitor 11 drawn between the outgoing line circuit breaker 8 and the external incoming line, which is grounded through a second outgoing line signal lamp 12 .

The electricity measuring circuit 2 includes a current transformer 13 whose primary side is connected to the first high voltage busbar 6 . A quantity electric fuse 14 and a voltage transformer 15 connected in sequence are also drawn out from the secondary side of the current transformer 13; the voltage transformer 15 is star-to-star connected, and its neutral point lead wire is grounded. On the secondary side of the current transformer 13, there are additionally connected sequentially connected electric measuring capacitors 16 and electric measuring signal lamps 17; the electric measuring signal lamps 17 are grounded.

The incoming line breaking circuit 3 includes a circuit-connected outgoing line circuit breaker 18 and a current transformer 19, the upper end of the outgoing line circuit breaker 18 is connected to the second high-voltage busbar 7, and the lower end is connected to the measuring voltage via the current transformer 19. Secondary side of current transformer 13 of circuit 2. The connection line between the current transformer 19 and the secondary side of the current transformer 13 leads to an incoming line capacitor 20 , which is grounded through an incoming line signal lamp 21 .

The voltage change lightning protection circuit 4 includes a plug socket 22, a voltage change fuse 23, and a voltage transformer 33 connected in sequence; a surge protector is drawn from the connection line between the upper end of the plug socket 22 and the second high voltage busbar 7 24, the lower end of which is grounded; a voltage variable capacitor 25 is also drawn in addition, which is grounded through the voltage variable signal lamp 26.

The outgoing line circuit 5 and the standby outgoing line circuit 51 have the same structure, and each includes an outgoing line circuit breaker 27 and a current transformer 28 connected in sequence; : respectively a grounded surge protector 29, a grounded isolating switch 30, and an outgoing line capacitor 31 and an outgoing line signal lamp 32 connected in sequence, and the outgoing line signal lamp 32 is grounded.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions of the present utility model will be obvious to those skilled in the art after reading the above content. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims (7)

1. A dual-power 10KV power distribution device with multiple circuit outlets, characterized in that the power distribution device includes two identical power distribution cabinets; each power distribution cabinet further includes: a circuit-connected incoming line isolation circuit (1 ), power measuring circuit (2), incoming line breaking circuit (3), voltage change lightning protection circuit (4), several outgoing line circuits (5) and several spare outgoing line circuits (51 ); the isolation circuit (1) and the electricity measuring circuit (2) are respectively connected to the first high-voltage busbar (6); the incoming line breaking circuit (3), the voltage change lightning protection circuit (4), and several outlet circuits (5) and several spare outlet circuits (51) are respectively connected to the second high-voltage busbar (7). 2. The dual power supply 10KV power distribution device with multi-circuit outgoing line mode according to claim 1, characterized in that, the incoming line isolation circuit (1) includes a plug and socket connector (8), the upper end of which is connected to the first high-voltage bus row (6), the lower end of which is connected to the external lead wire; it also includes a first outgoing line capacitor (9) drawn between the outgoing line circuit breaker (8) and the first high-voltage busbar (6), which is passed through the first outgoing line signal lamp ( 10) Grounding; it also includes a second outgoing line capacitor (11) drawn between the outgoing line circuit breaker (8) and the external incoming line, which is connected to a grounded second outgoing line signal lamp (12). 3. The dual-power 10KV power distribution device with multi-circuit outlet mode according to claim 1, characterized in that, the power measuring circuit (2) includes a current transformer (13), and its primary side is connected to the first high-voltage busbar (6); The secondary side of the current transformer (13) is also led to the electrical fuse (14) and the voltage transformer (15) connected in sequence; the voltage transformer (15) is a star-star Form connection, grounding through its neutral point lead-out line; In the secondary side of the current transformer (13), the electric capacity (16) and the electric signal lamp (17) connected with the circuit are additionally drawn out; the electric signal lamp ( 17) Ground. 4. The dual-power 10KV power distribution device with multi-circuit outgoing line mode according to claim 3, characterized in that, the incoming line breaking circuit (3) includes a circuit-connected outgoing line circuit breaker (18) and a current transformer (19 ); the upper end of the outlet circuit breaker (18) is connected to the second high-voltage busbar (7), and the lower end is connected to the secondary side of the current transformer (13) of the electrical measuring circuit (2) via a current transformer (19) ; The connecting line between the current transformer 19 and the secondary side of the current transformer (13) leads to an incoming line capacitor (20), which is connected to a grounded incoming line signal lamp (21) circuit. 5. The dual-power 10KV power distribution device with multi-circuit outgoing line mode according to claim 1, characterized in that, the voltage-changing lightning protection circuit (4) includes sequentially connected plug sockets (22), voltage-changing fuses (23 ), a voltage transformer (33); the connection line between the upper end of the plug socket (22) and the second high-voltage busbar (7) leads to a surge protector (24), the lower end of which is grounded; the plug socket (22 ) and the connection line between the upper end of the second high-voltage busbar (7) and a voltage variable capacitor (25), which is connected to a grounded voltage variable signal lamp (26) circuit. 6. The dual power supply 10KV power distribution device with multi-circuit outgoing line mode according to claim 1, characterized in that, the outgoing line circuit (5) and the spare outgoing line circuit (51) each include outgoing line circuit breakers connected in sequence (27), current transformer (28); the secondary side of the current transformer (28) and the connection line of the external transformer have three leads: the grounded surge protector (29), the grounded isolation switch ( 30), and the outgoing line capacitor (31) and the outgoing line signal lamp (32) connected in sequence, and the outgoing line signal lamp (32) is grounded. 7. The dual-power 10KV power distribution device with multi-circuit outgoing lines according to claim 1 or 6, characterized in that, each of the power distribution cabinets is provided with two outgoing lines (5), and correspondingly two one of the spare outlet circuits (51).

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