CN210327027U

CN210327027U - Power supply and distribution system for standby power supply of process cabinet of industrial factory building

Info

Publication number: CN210327027U
Application number: CN201920990120.9U
Authority: CN
Inventors: 张世闯
Original assignee: Cixi Qicheng Machinery Technology Co ltd
Current assignee: Cixi Qicheng Machinery Technology Co ltd; China Automobile Industry Engineering Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-04-14
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses an industry factory building technology cabinet stand-by power supply distribution system, include: the system comprises four primary double-power cabinets and a secondary double-power cabinet, wherein the primary double-power cabinet comprises a first double-power cabinet, a second double-power cabinet, a third double-power cabinet and a fourth double-power cabinet; the main power supplies of the first double-power-supply cabinet, the second double-power-supply cabinet and the third double-power-supply cabinet are provided by a first power supply unit comprising a first transformer or a second-stage double-power-supply cabinet, the main power supply of the fourth double-power-supply cabinet is provided by a third power supply unit comprising a third transformer, and standby power supplies of the first double-power-supply cabinet, the second double-power-supply cabinet, the third double-power-supply cabinet and the fourth double-power-supply cabinet are led out of the second-stage double; the main power of the secondary double-power-supply cabinet is provided by a second power supply unit comprising a second transformer, and the standby power is supplied by a diesel generating set through a power distribution cabinet. The utility model can realize that the load of the second transformer can not be increased under the normal condition; the construction is carried out in the substation of the first floor of the auxiliary room of the diesel generator room, and the normal production of a workshop is not influenced.

Description

Power supply and distribution system for standby power supply of process cabinet of industrial factory building

Technical Field

The utility model relates to a power supply technical field especially relates to industry factory building technology cabinet stand-by power supply distribution system.

Background

In the current power supply system of a coating workshop, four primary double power cabinets 1AT1, 1AT4 and 2AT1 are provided with main power sources led from a T1 transformer and standby power sources led from a diesel generator set, and a 3AT1 main power source led from a T3 transformer and standby power sources led from the diesel generator set. The diesel generating set start-stop signal is an under-voltage release signal of a T2 transformer total feed-out cabinet 2Lv1, but when the T2 is in normal power supply and the T1 and T3 are in abnormal power supply, important process equipment (requiring 24h power supply) powered by T1 and T3 does not have a standby power supply to enter, and the operation of the equipment is influenced.

According to the requirements of the process, four primary double power cabinets 1AT1, 1AT4, 2AT1 and 3AT1 are required to realize automatic starting of the diesel generator set. The existing scheme is that a low-voltage switch cabinet 2LV7 is additionally arranged on a T2 transformer, and main power supplies of four primary-level double power supply cabinets 1AT1, 1AT4, 2AT1 and 3AT1 are changed into power supplies led from 2LV 7.

The problems that exist are that: 1. in normal operation, four primary double power cabinets 1AT1, 1AT4, 2AT1 and 3AT1 are all led from T2; the load rate of T2 is increased from 77% to 90%, which is not beneficial to economical operation of the transformer; 2. the original main power cables of the four first-stage double power cabinets 1AT1, 1AT4, 2AT1 and 3AT1 are not long enough, and the cables need to be dismantled and laid again, so that cable waste is caused; 3. in the installation process, a workshop needs to be subjected to power failure construction, the construction period is long, and normal production is influenced; 4. and the modification cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical defect who exists among the prior art, and provide one kind and combine present domestic market car mill operation requirement, compromise workshop current situation, the industry factory building technology cabinet stand-by power supply distribution system of the construction degree of difficulty, adopt two-stage dual supply to switch over the realization diesel generator power supply.

For realizing the utility model discloses a technical scheme that the purpose adopted is:

the utility model provides an industry factory building technology cabinet stand-by power supply distribution system that supplies power, includes:

the system comprises four primary double-power cabinets and a secondary double-power cabinet, wherein the primary double-power cabinets comprise a first double-power cabinet for supplying power to a temperature control room, a second double-power cabinet for supplying power to an exhaust fan of a paint mixing room, a third double-power cabinet for supplying power to a central control room and a fourth double-power cabinet for supplying power to an air conditioner of the paint mixing room; the power supply system is characterized in that main power supplies of the first double-power-supply cabinet, the second double-power-supply cabinet and the third double-power-supply cabinet are provided by a first power supply unit comprising a first transformer or a second-stage double-power-supply cabinet, a main power supply of the fourth double-power-supply cabinet is provided by a third power supply unit comprising a third transformer, and standby power supplies of the first double-power-supply cabinet, the second double-power-supply cabinet, the third double-power-supply cabinet and the fourth double-power-supply cabinet are led from the second-stage double; the main power of the secondary double-power-supply cabinet is provided by a second power supply unit comprising a second transformer, and the standby power is supplied by a diesel generating set which is automatically started according to the signals of the frame-type circuit breaker undervoltage release of the second power supply unit through a power distribution cabinet.

The first power supply unit comprises a first high-voltage cabinet, a first transformer and two first low-voltage cabinets; one of the low-voltage cabinets supplies power to the double-power cabinet, the second double-power cabinet and the third double-power cabinet through the connected bus.

The second power supply unit comprises a second high-voltage cabinet, a second transformer and two second low-voltage cabinets, wherein one of the second low-voltage cabinets supplies power to the second-stage double-power-supply cabinet through a connecting bus.

The third power supply unit comprises a third high-voltage cabinet, a third transformer and a third low-voltage cabinet, and the third low-voltage cabinet supplies power to the fourth dual-power cabinet through a connecting bus.

The utility model discloses a two-stage dual supply cabinet realizes dual supply switching, and wherein the dual supply switching of second transformer and diesel generating set is realized to first order dual supply cabinet, and dual supply switching of first transformer or third transformer and diesel generating set is realized to the dual supply cabinet of second grade.

According to the requirements, the process load allows the power supply interruption time to be 1 h; the self-starting time of the diesel generator set is 15-30s, the switching time of the CB-level dual-power automatic transfer switch is 1-3s, and the total power supply interruption time is 17-32s, so that the power interruption requirement of process equipment is met. Under the condition that the first transformer and the third transformer are not powered off, main power supplies of the four primary double power supply cabinets are supplied with power by the first transformer and the third transformer; if the first transformer and the third transformer are powered off, the second transformer supplies power to the four primary double-power cabinets; if the second transformer is also powered off, the undervoltage tripping signal of the second power supply unit can start the diesel generator set in a linkage manner, and the diesel generator set supplies power.

Drawings

Fig. 1 is the utility model discloses an industry factory building technology cabinet stand-by power supply distribution system diagram.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model discloses the distribution object who uses is the important technology load in painting workshop: 24h of uninterrupted power supply is needed for the temperature control room dual-power cabinet 1AT1, the paint mixing room exhaust fan dual-power cabinet 1AT4, the central control room dual-power cabinet 2AT1 and the paint mixing room air conditioner dual-power cabinet 3AT 1. The utility model provides a novel distribution scheme realizes automatic start diesel generating set under 1AT1, 1AT4, 2AT1, 3AT1 main power failure circumstances.

As shown in fig. 1, the utility model discloses industry factory building technology cabinet stand-by power supply distribution system, include:

the system comprises four primary double-power cabinets and a secondary double-power cabinet APE5, wherein each primary double-power cabinet comprises a first double-power cabinet 1AT1 used for supplying power to a temperature control room, a second double-power cabinet 1AT4 used for supplying power to an exhaust fan of a paint mixing room, a third double-power cabinet 2AT1 used for supplying power to a central control room and a fourth double-power cabinet 3AT1 used for supplying power to an air conditioner of the paint mixing room; the main power supplies of the first double-power cabinet, the second double-power cabinet and the third double-power cabinet are provided by a first power supply unit comprising a first transformer T1 or a second-stage double-power cabinet, the main power supply of the fourth double-power cabinet is provided by a third power supply unit comprising a third transformer T3, and the standby power supplies of the first double-power cabinet, the second double-power cabinet, the third double-power cabinet and the fourth double-power cabinet are led from the second-stage double-power cabinet; the main power of the secondary double-power-supply cabinet is provided by a second power supply unit comprising a second transformer T2, and the standby power is supplied by a diesel generator set through a power distribution cabinet APE 4.

Wherein the first power supply unit comprises a first high-voltage cabinet Hv1, a first transformer T1 and two first low-voltage cabinets 1Lv2 and 1Lv 3; one of the low-voltage cabinets 1Lv2 supplies power to the dual-power cabinet 1AT4, the second dual-power cabinet 2AT1 and the third dual-power cabinet 3AT1 through connected buses.

The second power supply unit comprises a second high-voltage cabinet Hv2, a second transformer T2 and two second low-voltage cabinets 2Lv1 and 2Lv4, wherein one of the second low-voltage cabinets 2Lv4 supplies power to the secondary dual-power cabinet APE5 through an outgoing bus.

The third power supply unit comprises a third high-voltage cabinet Hv3, a third transformer T3 and a third low-voltage cabinet 3Lv4, and the third low-voltage cabinet 3Lv4 supplies power to the fourth dual-power cabinet 3AT1 through a connecting-out bus.

The utility model arranges a dual power cabinet APE5 in the diesel generator room, the main power supply is led from a T2 transformer low-voltage switch cabinet 2Lv4, and the standby power supply is led from a diesel generator power distribution cabinet APE 4; the tail end of the 4 technical double power cabinets 1AT1, 1AT4, 2AT1 and 3AT1 is provided with a standby power supply which is led from an APE5 of the double power cabinet, and a main power supply is kept unchanged, wherein the second-stage double power cabinet is normally supplied with power by a T1 or T2 transformer, and a self-starting signal of a diesel generating set is taken from a frame type circuit breaker undervoltage release signal of a total feed-out cabinet 2Lv1 (low-voltage cabinet) of the T2 transformer.

The utility model can not increase the load of the second transformer under normal condition; the construction is only carried out in the first-layer substation of the diesel generator room and the auxiliary room, and the normal production of a workshop is not influenced.

In a word, the utility model discloses be applied to in the dual supply transformation engineering practice, the construction degree of difficulty is little, and engineering cost is low, does not influence the normal production in workshop moreover, can obtain better economic benefits.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A standby power supply distribution system for industrial plant process cabinets comprises four primary double power supply cabinets and a secondary double power supply cabinet, wherein the primary double power supply cabinet comprises a first double power supply cabinet for supplying power to a temperature control room, a second double power supply cabinet for supplying power to an exhaust fan of a paint mixing room, a third double power supply cabinet for supplying power to a central control room and a fourth double power supply cabinet for supplying power to an air conditioner of the paint mixing room; the power supply system is characterized in that main power supplies of the first double-power-supply cabinet, the second double-power-supply cabinet and the third double-power-supply cabinet are provided by a first power supply unit comprising a first transformer or a second-stage double-power-supply cabinet, a main power supply of the fourth double-power-supply cabinet is provided by a third power supply unit comprising a third transformer, and standby power supplies of the first double-power-supply cabinet, the second double-power-supply cabinet, the third double-power-supply cabinet and the fourth double-power-supply cabinet are led from the second-stage double; the main power of the secondary double-power-supply cabinet is provided by a second power supply unit comprising a second transformer, and the standby power is supplied by a diesel generating set which is automatically started according to the signals of the frame-type circuit breaker undervoltage release of the second power supply unit through a power distribution cabinet.

2. The industrial plant process cabinet standby power supply power distribution system as claimed in claim 1, wherein the first power supply unit comprises a first high voltage cabinet, a first transformer and two first low voltage cabinets; one of the low-voltage cabinets supplies power to the double-power cabinet, the second double-power cabinet and the third double-power cabinet through the connected bus.

3. The power supply and distribution system for the standby power supply of the industrial factory building process cabinet is characterized in that the second power supply unit comprises a second high-voltage cabinet, a second transformer and two second low-voltage cabinets, wherein one of the second low-voltage cabinets supplies power to the second-stage double-power-supply cabinet through a connecting-out bus.

4. The power supply and distribution system for the standby power supply of the industrial factory building process cabinet is characterized in that the third power supply unit comprises a third high-voltage cabinet, a third transformer and a third low-voltage cabinet, and the third low-voltage cabinet supplies power to the fourth double-power cabinet through a connecting-out bus.