CN-224217904-U - Busbar interconnection structure

CN224217904UCN 224217904 UCN224217904 UCN 224217904UCN-224217904-U

Abstract

The application discloses a busbar interconnection structure which comprises at least two groups of low-voltage power supply inlet wires, a plurality of inlet wire frame circuit breakers and a plurality of neutral wire transformers, wherein each group of low-voltage power supply inlet wires is provided with at least two inlet wire frame circuit breakers, a neutral wire loop of each inlet wire frame circuit breaker is connected with a corresponding neutral wire transformer, the plurality of inlet wire frame circuit breakers corresponding to the same group of low-voltage power supply inlet wires are in short circuit with the input side of the neutral wire transformers, the plurality of inlet wire frame circuit breakers corresponding to different groups of low-voltage power supply inlet wires are in short circuit with the output side of the neutral wire transformers, and the neutral wires of a plurality of groups of low-voltage power supply inlet wires are interconnected through busbars.

Inventors

QIU CHENGMIN
ZHANG RONGMING
WENG MINGHAI
TANG SHAOYU
ZHANG MAOJIAN

Assignees

宁波天安智能电网科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250415

Claims (9)

1. The utility model provides a busbar interconnection structure which characterized in that includes: At least two groups of low-voltage power supply incoming lines, a plurality of incoming line frame circuit breakers and a plurality of neutral line transformers, wherein each group of the incoming line frame circuit breakers are configured with at least two incoming line frame circuit breakers, and a neutral line loop of each incoming line frame circuit breaker is connected with a corresponding neutral line transformer; The plurality of incoming line frame circuit breakers corresponding to the same group of low-voltage power supply incoming lines are in short circuit with the input side of the neutral line transformer, the plurality of incoming line frame circuit breakers corresponding to different groups of low-voltage power supply incoming lines are in short circuit with the output side of the neutral line transformer, and a plurality of groups of neutral lines of the low-voltage power supply incoming lines are interconnected through busbar.
2. The busbar interconnect structure of claim 1, further comprising: The support, the low voltage power supply inlet wire is located in the support, the inlet wire frame circuit breaker with support fixed connection, the neutral line transformer with support fixed connection.
3. The busbar interconnect structure of claim 2, wherein, The incoming line frame circuit breaker is fixed through the support to be arranged in a lifting mode relative to the ground.
4. The busbar interconnect structure of claim 2, wherein, The low-voltage power supply inlet wire comprises a first group of low-voltage power supply inlet wires and a second group of low-voltage power supply inlet wires, and the first group of low-voltage power supply inlet wires and the second group of low-voltage power supply inlet wires are arranged on two opposite sides of the support.
5. The busbar interconnect structure of claim 4, wherein, The wire inlet frame circuit breakers comprise a first group of frame circuit breakers and a second group of frame circuit breakers, the first group of frame circuit breakers and the second group of frame circuit breakers are connected with the support, the first group of frame circuit breakers are used for being electrically connected with the first group of power inlet wires, and the second group of frame circuit breakers are used for being electrically connected with the second group of power inlet wires.
6. The busbar interconnect structure of claim 5, wherein, The first group of frame circuit breakers and the second group of frame circuit breakers are arranged on the same axis.
7. The busbar interconnect structure of claim 5, wherein, The first group of frame circuit breakers comprises a first frame circuit breaker and a second frame circuit breaker, and the second group of frame circuit breakers comprises a third frame circuit breaker and a fourth frame circuit breaker; The first frame circuit breaker is interconnected with the third frame circuit breaker through a busbar, and the second frame circuit breaker is interconnected with the fourth frame circuit breaker through a busbar.
8. The busbar interconnect structure of claim 7, wherein, The neutral line transformer comprises a first neutral line transformer, a second neutral line transformer, a third neutral line transformer and a fourth neutral line transformer, wherein the first neutral line transformer and the second neutral line transformer correspond to the first group of frame circuit breakers, and the third neutral line transformer and the fourth neutral line transformer correspond to the second group of frame circuit breakers.
9. The busbar interconnect structure of claim 8 wherein, The first neutral line transformer, the second neutral line transformer, the third neutral line transformer and the fourth neutral line transformer are arranged on the same axis.

Description

Busbar interconnection structure Technical Field The application relates to the technical field of low-voltage switch cabinets, in particular to a busbar interconnection structure. Background Currently, in low-voltage distribution systems, dual-power supply schemes are widely used in industrial, commercial and civil scenarios because of their ability to significantly improve power reliability. The main current double-power distribution scheme mainly comprises a single bus sectional type and a double-bus independent type. The two have obvious defects in the aspects of neutral line current monitoring and control logic, namely the existing single-bus sectional scheme is characterized in that two groups of power supplies are connected into a single bus through a disconnecting switch, a sectional breaker is arranged in the middle of the bus, and mechanical or electric interlocking is adopted to prevent double power supplies from being connected in parallel. The dual-bus independent scheme adopts a main power supply and a standby power supply to be respectively connected with independent buses, redundancy is realized through a bus-bar breaker, and automatic power switching is realized by relying on a PLC control module, but the dual-bus independent scheme has the defects of complex control logic, high debugging cost, the PLC control module needs to integrate complex programs such as power priority judgment, fault detection, interlocking logic and the like, in the system operation, the PLC module needs to acquire multiple paths of current and voltage signals in real time and execute logic operation, the requirements on hardware performance and software stability are extremely high, the later maintenance needs to rely on special programming equipment, and the operation and maintenance cost is high. Disclosure of utility model The application aims to provide a busbar interconnection structure for solving the problems of monitoring deficiency of single busbar arrangement and complex control of double busbar arrangement in a low-voltage switch cabinet. The technical scheme includes that the busbar interconnection structure comprises at least two groups of low-voltage power supply incoming lines, a plurality of incoming line frame circuit breakers and a plurality of neutral line transformers, wherein each group of low-voltage power supply incoming lines is provided with at least two incoming line frame circuit breakers, the neutral line loops of each incoming line frame circuit breaker are connected with the corresponding neutral line transformer, the incoming line frame circuit breakers corresponding to the same group of low-voltage power supply incoming lines are in short circuit with the input side of the neutral line transformer, the incoming line frame circuit breakers corresponding to different groups of low-voltage power supply incoming lines are in short circuit with the output side of the neutral line transformer, and the neutral lines of multiple groups of low-voltage power supply incoming lines are interconnected through busbars. Preferably, the transformer further comprises a support, the incoming line of the low-voltage power supply is arranged in the support, the incoming line frame breaker is fixedly connected with the support, and the neutral line transformer is fixedly connected with the support. As another preferred aspect, the incoming line frame circuit breaker is fixed by the bracket to be disposed in a lifted manner with respect to the ground. Further preferably, the low-voltage power supply line comprises a first group of low-voltage power supply line and a second group of low-voltage power supply line, and the first group of low-voltage power supply line and the second group of low-voltage power supply line are positioned on two opposite sides of the support. Further preferably, the incoming line frame circuit breaker includes a first group of frame circuit breakers and a second group of frame circuit breakers, the first group of frame circuit breakers and the second group of frame circuit breakers are all connected with the bracket, the first group of frame circuit breakers are used for being electrically connected with the first group of low-voltage power incoming lines, and the second group of frame circuit breakers are used for being electrically connected with the second group of low-voltage power incoming lines. Further preferably, the first set of frame breakers is disposed on the same axis as the second set of frame breakers. Further preferably, the first group of frame circuit breakers comprises a first frame circuit breaker and a second frame circuit breaker, and the second group of frame circuit breakers comprises a third frame circuit breaker and a fourth frame circuit breaker, wherein the first frame circuit breaker is interconnected with the third frame circuit breaker through a busbar, and the second frame circuit breaker is interconnected with the fourth frame circuit breaker thr