A double busbar with bypass interval combination electrical apparatus

Abstract

The utility model belongs to the technical field of combined electrical apparatus, especially relates to a double busbar interval combined electrical apparatus with bypass. The double busbar interval combined electrical apparatus with bypass, including cable outgoing line interval and overhead outgoing line interval, its characterized in that: the cable outgoing line interval is equipped with first transition main busbar at main busbar side, and first transition main busbar is connected with first overhead sleeve through first branch busbar, and the overhead outgoing line interval is equipped with second transition main busbar at main busbar side, and second transition main busbar is connected with second overhead sleeve through second branch busbar. The utility model has the beneficial effects that: the double busbar bypass interval satisfies the need of main loop function, can be switched to another loop when needing overhauling, does not affect the normal operation of load, and adds a bypass busbar, can not cause power failure to users when overhauling equipment.

Description

Technical Field

[0001] This utility model belongs to the field of combined electrical appliances technology, and specifically relates to a combined electrical appliance with a double busbar and a bypass bay. Background Technology

[0002] In 220kV and above transmission and transformation lines, double busbar double-section and double busbar single-section are the main wiring configurations. During maintenance, it is necessary to open the disconnect switches at both ends of the circuit breaker to cut off the power, which not only affects the normal operation of the load but also causes power outages for users. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a combined electrical appliance with a double busbar and a bypass bay.

[0004] This utility model is achieved through the following technical solution:

[0005] A dual-busbar bypass bay combined electrical unit includes a cable outgoing bay and an overhead outgoing bay, characterized in that: the cable outgoing bay is provided with a first transition main busbar on the main busbar side, the first transition main busbar is connected to a first overhead bushing through a first branch busbar, and the overhead outgoing bay is provided with a second transition main busbar on the main busbar side, the second transition main busbar is connected to a second overhead bushing through a second branch busbar.

[0006] The cable outgoing section and the overhead outgoing section are respectively connected to circuit breakers. The lower part of the circuit breaker is connected in sequence to a current transformer, a bus-side disconnect switch and a bus-side disconnect grounding switch. The upper part of the circuit breaker is connected in sequence to a line-side disconnect grounding switch, a voltage transformer and a cable terminal.

[0007] The cable outgoing section and the overhead outgoing section are respectively connected to the control cabinet.

[0008] The beneficial effects of this utility model are: the double busbar bypass bay meets the needs of the main circuit function, and when maintenance is required, it can be switched to another circuit without affecting the normal operation of the load. The addition of a bypass busbar can prevent power outages for users when the equipment is being maintained. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings.

[0010] Appendix Figure 1 This is a top view of the structure of this utility model;

[0011] Appendix Figure 2 This is a side view of the structure of this utility model;

[0012] In the diagram, 1 is the cable outgoing section, 2 is the overhead outgoing section, 3 is the first transition main busbar, 4 is the first branch busbar, 5 is the first overhead bushing, 6 is the second transition main busbar, 7 is the second branch busbar, 8 is the second overhead bushing, 9 is the circuit breaker, 10 is the current transformer, 11 is the busbar-side disconnect switch, 12 is the busbar-side disconnect grounding switch, 13 is the line-side disconnect grounding switch, 14 is the voltage transformer, 15 is the cable terminal, and 16 is the control cabinet. Detailed Implementation

[0013] The attached figure illustrates a specific embodiment of this utility model. This embodiment includes a cable outgoing section 1 and an overhead outgoing section 2. Cable outgoing section 1 has a first transition main busbar 3 on the main busbar side, which is connected to a first overhead bushing 5 via a first branch busbar 4. Overhead outgoing section 2 has a second transition main busbar 6 on the main busbar side, which is connected to a second overhead bushing 8 via a second branch busbar 7. Cable outgoing section 1 and overhead outgoing section 2 are respectively connected to a circuit breaker 9. The lower part of circuit breaker 9 is sequentially connected to a current transformer 10, a busbar-side disconnect switch 11, and a busbar-side grounding switch 12. The upper part of circuit breaker 9 is sequentially connected to a line-side grounding switch 13, a voltage transformer 14, and a cable terminal 15. Cable outgoing section 1 and overhead outgoing section 2 are respectively connected to a control cabinet 16.

[0014] The present invention utilizes a double busbar bypass bay combined electrical unit. First, cable outgoing bay 1 is assembled according to the main wiring diagram. Cable outgoing bay 1 mainly includes double main busbars, busbar-side isolating grounding switch 12, circuit breaker 9, current transformer 10, line-side isolating grounding switch 13, cable terminal 15, and voltage transformer 14. Similarly, overhead outgoing bay 2 mainly includes double main busbars, busbar-side isolating grounding switch 12, circuit breaker 9, current transformer 10, line-side isolating grounding switch 13, and voltage transformer 14. Overhead outgoing bay 2 is assembled according to the main wiring diagram. The bypass bay adds a first transition main busbar 3 to the main busbar side of cable outgoing bay 1, converts it to a three-phase independent first branch busbar 4 via a tee, and then connects to the first overhead bushing 5 via the first branch busbar 4, thus connecting to the overhead busbar. The 2-busbar bypass bay adds a second transition main busbar 6 to the main busbar side of overhead outgoing line bay 2. This transition busbar is converted to a three-phase independent second branch busbar 7 via a tee, and then connected to the second overhead bushing 8 via the second branch busbar 7, thus connecting to the overhead busbar. The double busbar bypass bay meets the functional requirements of the main circuit. When maintenance is needed, the system can switch to another circuit without affecting the normal operation of the load. The reason for adding a bypass busbar in a double busbar system is to prevent power outages for users during equipment maintenance.

Claims

1. A double busbar combined electrical unit with bypass bay, comprising a cable outgoing bay (1) and an overhead outgoing bay (2), characterized in that: The cable outgoing section (1) is provided with a first transition main busbar (3) on the main busbar side. The first transition main busbar (3) is connected to the first overhead bushing (5) through the first branch busbar (4). The overhead outgoing section (2) is provided with a second transition main busbar (6) on the main busbar side. The second transition main busbar (6) is connected to the second overhead bushing (8) through the second branch busbar (7).

2. The dual-busbar combined electrical unit with bypass bay according to claim 1, characterized in that: The cable outgoing section (1) and the overhead outgoing section (2) are respectively connected to the circuit breaker (9). The lower part of the circuit breaker (9) is connected to the current transformer (10), the bus side disconnect switch (11) and the bus side disconnect grounding switch (12) in sequence. The upper part of the circuit breaker (9) is connected to the line side disconnect grounding switch (13), the voltage transformer (14) and the cable terminal (15) in sequence.

3. The dual-busbar combined electrical unit with bypass bay according to claim 1, characterized in that: The cable outgoing section (1) and the overhead outgoing section (2) are respectively connected to the control cabinet (16).

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