CN102646940A - Double-power 10KV power distribution device - Google Patents

Abstract

The invention relates to a 10KV power distribution device with dual power supplies. The device is composed of two identical power distribution cabinets. The power distribution cabinet includes an incoming line isolation cabinet, a power measuring cabinet, an incoming line circuit breaker cabinet, and a voltage change arrester cabinet. , multiple identical outgoing line cabinets, multiple spare outgoing line cabinets, the first high-voltage busbar, and the second high-voltage busbar, the incoming line isolation cabinet is equipped with an incoming line isolation circuit, and the described power measuring cabinet is equipped Electricity measuring circuit, the incoming circuit breaker cabinet is provided with an incoming circuit breaker circuit, the voltage variable arrester cabinet is provided with a voltage variable lightning protection circuit, the outgoing line cabinet is provided with an outgoing line circuit, and the spare The circuit in the outlet cabinet is the same as the outlet circuit in the outlet cabinet. Compared with the prior art, the present invention has the advantages of simple structure, convenient operation and maintenance, high work efficiency, safety and reliability, environmental protection and resource saving.

Description

A dual power supply 10KV power distribution device

technical field

The invention relates to a power distribution device, in particular to a dual power supply 10KV power distribution device.

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.

Contents of the invention

The purpose of the present invention is to provide a dual-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 overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions: a dual power supply 10KV power distribution device, characterized in that the device is composed of two identical power distribution cabinets, the power distribution cabinets include incoming line isolation cabinets, Electric cabinets, incoming circuit breaker cabinets, voltage transformer arrester cabinets, multiple identical outgoing line cabinets, and multiple standby outgoing line cabinets that are redundant with the outgoing line cabinets. A high-voltage busbar, a second high-voltage busbar is arranged between the incoming line circuit breaker cabinet, voltage transformer arrester cabinet, multiple outgoing line cabinets, and multiple spare outgoing line cabinets that are redundant with the outgoing line cabinets. The line isolation cabinet is provided with an incoming line isolation circuit, the electric measuring cabinet is provided with a power measuring circuit, the incoming line circuit breaker cabinet is provided with an incoming line breaking circuit, and the voltage change arrester cabinet is provided with The voltage-changing lightning protection circuit, the outlet circuit is provided in the outlet cabinet, and the circuit in the spare outlet cabinet is the same as the outlet circuit in the outlet cabinet.

The incoming line isolation circuit includes a first capacitor, a first signal lamp, a plug socket connector, a second capacitor, and a second signal lamp, one end of the plug socket connector is connected to one end of the first capacitor, and the plug socket connector The other end of the first capacitor is connected to the first high-voltage busbar, the other end of the first capacitor is connected to the first signal lamp, the first signal lamp is grounded, and one end of the second capacitor is connected to the plug socket connector and the first high-voltage busbar. The other end of the second capacitor is connected to the second signal lamp, and the second signal lamp is grounded.

The measuring circuit includes a first current transformer, a first fuse, a first voltage transformer, a third capacitor, and a third signal lamp, the first current transformer is connected to the first high-voltage busbar, and the One end of the first fuse is connected to the first current transformer, the other end of the first fuse is connected to the first voltage transformer, and one end of the third capacitor is connected to the first current transformer, so The other end of the third capacitor is connected to the third signal lamp, and the third signal lamp is grounded.

The incoming line breaking circuit includes a second current transformer, a fourth capacitor, a fourth signal lamp, and a first high-voltage outgoing line circuit breaker. One end of the second current transformer is connected to the first current transformer, and the second current transformer The other end of the transformer is connected to the first high-voltage outgoing circuit breaker, the first high-voltage outgoing circuit breaker is connected to the second high-voltage busbar, and one end of the fourth capacitor is connected to the first current transformer and the second current transformer. The other end of the fourth capacitor is connected to the fourth signal lamp, and the fourth signal lamp is grounded.

The voltage change lightning protection circuit includes a first surge protector, a second fuse, a second voltage transformer, a fifth capacitor, and a fifth signal lamp. One end of the first surge protector is connected to the second high voltage bus row connection, the other end of the first surge protector is grounded, one end of the second fuse is connected to the second high-voltage busbar through a plug socket, and the other end of the second fuse is connected to the second voltage transformer. One end of the fifth capacitor is connected to the second high-voltage busbar, the other end of the fifth capacitor is connected to the fifth signal lamp, and the fifth signal lamp is grounded.

The outlet circuit includes a second high-voltage outlet circuit breaker, an outlet current transformer, a sixth capacitor, a sixth signal lamp, a second surge protector, and a switch. One end of the second high-voltage outlet circuit breaker is connected to the second high-voltage The busbar is connected, the other end of the second high-voltage outgoing circuit breaker is connected to the outgoing current transformer, the outgoing current transformer is connected to one end of the sixth capacitor, and the other end of the sixth capacitor is connected to the sixth signal lamp, The sixth signal light is grounded, one end of the second surge protector is connected to the outgoing line current transformer, the other end of the second surge protector is grounded, one end of the switch is connected to the outgoing line current transformer, and the other end of the switch is connected to the outgoing line current transformer. One end is grounded.

Compared with the prior art, the present invention 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 present invention also has the advantages of safety and 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 structural schematic diagram of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figure 1, a dual-power 10KV power distribution device is composed of two identical power distribution cabinets, and each power distribution cabinet enters a power line. The power distribution cabinet includes an incoming line isolation cabinet 1, a power measuring cabinet 2, an incoming line circuit breaker cabinet 3, a voltage transformer arrester cabinet 4, multiple identical outgoing line cabinets 5, and multiple standby outgoing line cabinets 6 that are redundant with the outgoing line cabinets. A first high-voltage busbar 7 is provided between the incoming line isolation cabinet 1 and the power measuring cabinet 2 . A second high-voltage bus bar 8 is arranged between the incoming circuit breaker cabinet 3, the voltage transformer arrester cabinet 4, multiple outgoing line cabinets 5, and multiple standby outgoing line cabinets 6 for redundancy with the outgoing line cabinets, and the second high-voltage bus bar 8 will be The cabinets are connected in series. The incoming line isolation cabinet 1 is equipped with an incoming line isolation circuit, the power measuring cabinet 2 is equipped with a power measuring circuit, the incoming line circuit breaker cabinet 3 is equipped with an incoming line breaking circuit, and the voltage variable arrester cabinet 4 is equipped with a voltage variable lightning protection circuit , the outgoing line cabinet 5 is provided with an outgoing line circuit, and the circuit in the spare outgoing line cabinet 6 is the same as the outgoing line circuit in the outgoing line cabinet 5 . In this embodiment, two outlet cabinets 5 and two spare outlet cabinets 6 are respectively provided, and of course, multiple outlet cabinets can also be provided as required.

The incoming line isolation circuit includes a first capacitor 10 , a first signal lamp 11 , a plug socket connector 9 , a second capacitor 12 , and a second signal lamp 13 . One end of the plug and socket connector 9 is connected to one end of the first capacitor 10, the other end of the plug and socket connector 9 is connected to the first high-voltage busbar 7, and the other end of the first capacitor 10 is connected to the first signal lamp 11, and the first signal lamp 11 is grounded, one end of the second capacitor 12 is connected to the plug socket connector 9 and the first high voltage busbar 7, the other end of the second capacitor 12 is connected to the second signal lamp 13, and the second signal lamp 13 is grounded.

The electricity measuring circuit includes a first current transformer 14 , a first fuse 15 , a first voltage transformer 16 , a third capacitor 17 , and a third signal lamp 18 . The first current transformer 14 is connected to the first high voltage busbar 7, one end of the first fuse 15 is connected to the first current transformer 14, the other end of the first fuse 15 is connected to the first voltage transformer 16, and the third One end of the capacitor 17 is connected to the first current transformer 14, the other end of the third capacitor 17 is connected to the third signal lamp 18, and the third signal lamp 18 is grounded.

The incoming line breaking circuit includes a second current transformer 20 , a fourth capacitor 21 , a fourth signal lamp 22 , and a first high voltage outgoing line circuit breaker 19 . One end of the second current transformer 20 is connected to the first current transformer 14, and the other end of the second current transformer 20 is connected to the first high-voltage outgoing line circuit breaker 19, and the first high-voltage outgoing line circuit breaker 19 is connected to the second high-voltage busbar 8 One end of the fourth capacitor 21 is connected to the first current transformer 14 and the second current transformer 20, the other end of the fourth capacitor 21 is connected to the fourth signal lamp 22, and the fourth signal lamp 22 is grounded.

The voltage change lightning protection circuit includes a first surge protector 23 , a second fuse 25 , a second voltage transformer 26 , a fifth capacitor 27 , and a fifth signal lamp 28 . One end of the first surge protector 23 is connected to the second high voltage busbar 8, the other end of the first surge protector 23 is grounded, and one end of the second fuse 25 is connected to the second high voltage busbar 8 through the plug socket 24, The other end of the second fuse 25 is connected to the second voltage transformer 26, one end of the fifth capacitor 27 is connected to the second high voltage busbar 8, the other end of the fifth capacitor 27 is connected to the fifth signal lamp 28, and the fifth signal lamp 28 grounded.

The outlet circuit includes a second high voltage outlet circuit breaker 29 , an outlet current transformer 30 , a sixth capacitor 32 , a sixth signal lamp 33 , a second surge protector 31 , and a switch 34 . One end of the second high-voltage outgoing line circuit breaker 29 is connected with the second high-voltage busbar 8, the other end of the second high-voltage outgoing line circuit breaker 29 is connected with the outgoing line current transformer 30, and the outgoing line current transformer 30 is connected with one end of the sixth capacitor 32, The other end of the sixth capacitor 32 is connected to the sixth signal lamp 33, the sixth signal lamp 33 is grounded, one end of the second surge protector 31 is connected to the outgoing current transformer 30, the other end of the second surge protector 31 is grounded, and the switch One end of switch 34 is connected to outgoing current transformer 30, and the other end of switch 34 is grounded.

Claims (6)

1. duplicate supply 10KV power distribution equipment; It is characterized in that; This device is made up of two identical power distribution cabinets; Described power distribution cabinet comprises that inlet wire is isolated cabinet, measured electric cabinet, the lead-in circuit breaker cabinet, press and become lightning arrester cabinet, a plurality of identical outlet cabinet, a plurality ofly carry out redundant subsequent use outlet cabinet with the outlet cabinet, and described inlet wire is isolated between cabinet and the electric cabinet of amount and is provided with the first high pressure busbar, described lead-in circuit breaker cabinet, presses change lightning arrester cabinet, a plurality of outlet cabinet, a plurality of and outlet cabinet to carry out being provided with the second high pressure busbar between the subsequent use outlet cabinet of redundancy; Be provided with the inlet wire buffer circuit in the described inlet wire isolation cabinet; The amount of being provided with electricity circuit in the described amount electricity cabinet is provided with the inlet wire open circuit in the described lead-in circuit breaker cabinet, and described pressure becomes to be provided with in the lightning arrester cabinet presses the change lightning circuit; Be provided with outgoing line circuit in the described outlet cabinet, the interior outgoing line circuit of the circuit in the described subsequent use outlet cabinet and outlet cabinet is identical.

2. a kind of duplicate supply 10KV power distribution equipment according to claim 1; It is characterized in that described inlet wire buffer circuit comprises first electric capacity, first signal lamp, plugs and sockets connector, second electric capacity, secondary signal lamp, an end of described plugs and sockets connector is connected with an end of first electric capacity; The other end of plugs and sockets connector is connected with the first high pressure busbar; The other end of described first electric capacity is connected with first signal lamp, and the first signal lamp ground connection is connected between one end of described second electric capacity and plugs and sockets connector, the first high pressure busbar; The other end of second electric capacity is connected with the secondary signal lamp, secondary signal lamp ground connection.

3. a kind of duplicate supply 10KV power distribution equipment according to claim 1; It is characterized in that; Described amount electricity circuit comprises first current transformer, first fuse, first voltage transformer, the 3rd electric capacity, the 3rd signal lamp, and described first current transformer is connected with the first high pressure busbar, and an end of described first fuse is connected with first current transformer; The other end of described first fuse is connected with first voltage transformer; One end of described the 3rd electric capacity is connected with first current transformer, and the other end of described the 3rd electric capacity is connected with the 3rd signal lamp, the 3rd signal lamp ground connection.

4. according to claim 1 or 3 described a kind of duplicate supply 10KV power distribution equipments; It is characterized in that; Described inlet wire open circuit comprises second current transformer, the 4th electric capacity, the 4th signal lamp, the first high-voltage terminal circuit breaker, and an end of described second current transformer is connected with first current transformer, and the other end of second current transformer is connected with the first high-voltage terminal circuit breaker; The described first high-voltage terminal circuit breaker is connected with the second high pressure busbar; Be connected between one end of described the 4th electric capacity and first current transformer, second current transformer, the other end of described the 4th electric capacity is connected with the 4th signal lamp, the 4th signal lamp ground connection.

5. a kind of duplicate supply 10KV power distribution equipment according to claim 1; It is characterized in that; Described pressure becomes lightning circuit and comprises first Surge Protector, second fuse, second voltage transformer, the 5th electric capacity, the 5th signal lamp; One end of described first Surge Protector is connected with the second high pressure busbar, the other end ground connection of first Surge Protector, and an end of described second fuse is connected with the second high pressure busbar through plugs and sockets; The other end of second fuse is connected with second voltage transformer; One end of described the 5th electric capacity is connected with the second high pressure busbar, and the other end of described the 5th electric capacity is connected with the 5th signal lamp, the 5th signal lamp ground connection.

6. a kind of duplicate supply 10KV power distribution equipment according to claim 1; It is characterized in that described outgoing line circuit comprises the second high-voltage terminal circuit breaker, outlet current transformer, the 6th electric capacity, the 6th signal lamp, second Surge Protector, switch, an end of the described second high-voltage terminal circuit breaker is connected with the second high pressure busbar; The other end of the second high-voltage terminal circuit breaker is connected with the outlet current transformer; Described outlet current transformer is connected with an end of the 6th electric capacity, and the other end of described the 6th electric capacity is connected with the 6th signal lamp, the 6th signal lamp ground connection; One end of described second Surge Protector is connected with the outlet current transformer; The other end ground connection of second Surge Protector, an end of described switch is connected with the outlet current transformer, the other end ground connection of switch.

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