CN203056680U

CN203056680U - Wiring structure of three power supplies and three buses standby for each other

Info

Publication number: CN203056680U
Application number: CN 201320048102
Authority: CN
Inventors: 陈其林
Original assignee: GUIZHOU CHITIANHUA CO Ltd
Current assignee: Guizhou Sheng Ji Tang Pharmaceutical Industry Ltd By Share Ltd
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2013-07-10
Anticipated expiration: 2023-01-29

Abstract

The utility model discloses a wiring structure of three power supplies and three buses standby for each other. The wiring structure comprises a first bus (1); the first bus (1) is connected with a second bus (2) through a first bus coupling switch (4); the second bus (2) is connected with a third bus (3) through a second bus coupling switch (5); the first bus (1) and the third bus (3) are connected through a third bus coupling switch (6); a first power supply (7) is connected with the first bus (1); a second power supply (8) is connected with the second bus (2); and a third power supply (8) is connected with the third bus (3). With the wiring structure, problems of the conventional tandem type bus that when a second bus is failed to operate, a first bus and a third bus cannot backup each other, when a power supply of the second bus is failed to work, switching time is long and current on the second bus is doubled as a power supply of the third bus provides power to the first bus, protection setting of a power supply cabinet is complex and the like are overcome.

Description

Three sections buses of a kind of three power supplys are standby wiring construction each other

Technical field

The utility model relates to for the distribution technique field, relates in particular to three sections buses of a kind of three power supplys standby wiring construction each other.

Background technology

In the large-size chemical industry; large-scale chemical fertilizer production device is had relatively high expectations to power supply reliability; usually adopt many power supplys standby electric power-feeding structure each other; can in time switch to each electricity consumption bussed supply when guaranteeing wherein a certain power failure and guarantee to produce normal operation; the common power supply buses mode of connection is the syllogic bus structure; first bus with connect by second bus connection switch with triple bus-bar again after second bus is connected by first bus connection switch; the power supply line is connected on respectively on three sections buses; the problem that this mode of connection exists is when second busbar fault can not be moved; first bus and triple bus-bar can not standbyly each other provide power supply to first bus or triple bus-bar; when the power supply of first bus and second bus can not be worked; switching time was long when the power supply of triple bus-bar will be to first bussed supply; and electric current has increased by one times on second bus, the powering shelf protection complexity of adjusting.

Summary of the invention

The technical problem that utility model will solve: three sections buses of a kind of three power supplys standby wiring construction each other is provided, with solve to adopt that conventional tandem bussed supply exists when second busbar fault can not be moved, first bus and triple bus-bar can not be standby each other, provide power supply to first bus or triple bus-bar; When the power supply of second bus can not be worked, when the power supply of triple bus-bar will be to first bussed supply switching time long, and electric current has increased by one times on second bus, the powering shelf protection problems such as complexity of adjusting.

Technical solutions of the utility model:

Three sections buses of a kind of three power supplys are standby wiring construction each other, it comprises first bus and first bus connection switch, first bus is connected by first bus connection switch with second bus, second bus is connected by second bus connection switch with triple bus-bar, first bus is connected by the 3rd bus connection switch with triple bus-bar, first power supply is connected with first bus, second power supply is connected with second bus, and the 3rd power supply is connected with triple bus-bar.

The beneficial effects of the utility model:

This practical novel series connection bussed supply mode with routine changes triangle bussed supply mode into, exist advantage to have compared to existing technology: any one section power supply or busbar fault, any one section in all the other two sections can provide stand-by power supply to any one section bus as stand-by power supply; When first power supply and second power supply can not provide power supply unusually, the 3rd power supply was taken time to first bussed supply and is shortened half; The bus connection switch choice of capacity can reduce about half than the capacity of prior art bus connection switch; The guarantor that continues of bus connection switch arranges more simple possible, and operational mode is more flexible; The bus connection switch disjunction fault that selectively trips during accident condition, reliability is higher; Each section bus is separate, is independent of each other, and operational mode is flexible; Shorten recovery time during same fault; The probability of this electric substation's system blackout reduces; Solved adopt that conventional tandem bussed supply exists when second busbar fault can not be moved, first bus and triple bus-bar can not be standby each other, provide power supply to first bus or triple bus-bar; When the power supply of second bus can not be worked, when the power supply of triple bus-bar will be to first bussed supply switching time long, and electric current has increased by one times on second bus, the powering shelf protection problems such as complexity of adjusting.

Description of drawings:

Fig. 1 the utility model wiring construction figure.

Embodiment:

Three sections buses of a kind of three power supplys are standby wiring construction each other, first bus 1 is connected by first bus connection switch 4 with second bus 2, second bus 2 is connected by second bus connection switch 5 with triple bus-bar 3, first bus 1 is connected by the 3rd bus connection switch 6 with triple bus-bar 3, first power supply 7 is connected with first bus 1, second power supply 8 is connected with second bus 2, and the 3rd power supply 9 is connected with triple bus-bar 3; Be in series with protection devices such as a deciliter switch, circuit breaker between each power supply and the bus.

Claims

1. three sections buses of a power supply standby wiring construction each other, it comprises first bus (1) and first bus connection switch (4), it is characterized in that: first bus (1) is connected by first bus connection switch (4) with second bus (2), second bus (2) is connected by second bus connection switch (5) with triple bus-bar (3), first bus (1) is connected by the 3rd bus connection switch (6) with triple bus-bar (3), first power supply (7) is connected with first bus (1), second power supply (8) is connected with second bus (2), and the 3rd power supply (9) is connected with triple bus-bar (3).