LU93361B1 - Emergency lighting automatic switching system - Google Patents

Emergency lighting automatic switching system Download PDF

Info

Publication number
LU93361B1
LU93361B1 LU93361A LU93361A LU93361B1 LU 93361 B1 LU93361 B1 LU 93361B1 LU 93361 A LU93361 A LU 93361A LU 93361 A LU93361 A LU 93361A LU 93361 B1 LU93361 B1 LU 93361B1
Authority
LU
Luxembourg
Prior art keywords
phase
relay
power supply
contactor
normally closed
Prior art date
Application number
LU93361A
Inventor
Zhenbiao Wu
Original Assignee
Anxi Zhonglei Equipment Mfg Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anxi Zhonglei Equipment Mfg Co Ltd filed Critical Anxi Zhonglei Equipment Mfg Co Ltd
Priority to LU93361A priority Critical patent/LU93361B1/en
Application granted granted Critical
Publication of LU93361B1 publication Critical patent/LU93361B1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H02J9/065—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads for lighting purposes

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The present invention relates to the technical field of power control, and in particular to an emergency lighting automatic switching system. The emergency lighting automatic switching system comprises a normal lighting module (b) connected with a three-phase AC power supply (a), and an emergency lighting module (d) connected with a DC power supply (c), wherein the normal lighting module (b) comprises an AC contactor (1C), an A-phase relay (1YJ), a B-phase relay (2YJ) and a C-phase relay (3YJ), and the emergency lighting module (d) comprises a DC contactor (2C); a coil of the AC contactor (1C) is connected between each phase of the three-phase AC power supply (a) and a null wire simultaneously through a normally open contact of the A-phase relay (1YJ), a normally open contact of the B-phase relay (2YJ) and a normally open contact of the C-phase relay (3YJ); and a normally closed contact of the A-phase relay (1YJ), a normally closed contact of the B-phase relay (2YJ), a normally closed contact of the C-phase relay (3YJ) and a coil of the DC contactor (2C) are sequentially in series connection and then are connected between the positive electrode and the negative electrode of the DC power supply (c). The emergency lighting automatic switching system can achieve automatic switching and resetting of an emergency lighting system; and the structure is simple, the costs are low, and the practicability is greatly strong

Description

EMERGENCY LIGHTINGAUTOMATIC SWITCHING SYSTEM
BACKGROUND
Technical Field
The present invention relates to the technical field of power control, and in particular to an emergency lighting automatic switching system.
Related Art
Emergency lighting system is an indispensable part of a transformer substation as a power system core unit, and it directly relates to the safety of associated facilitates and persons. Currently, the existing emergency lighting control system generally has the following defects: firstly, integral and intelligent control is utilized, which causes high costs and difficulty in maintenance; secondly, a simple structure is utilized, so that only manual switching is supported, and operations are tedious; and finally, functions are relatively single.
Summary
In view of disadvantages in the prior art, an objective of the present invention is to provide an emergency lighting automatic switching system.
In order to achieve the objective described above, a technical scheme adopted by the present invention is as follows: the emergency lighting automatic switching system comprises a normal lighting module that is connected with a three-phase AC power supply, and an emergency lighting module that is connected with a DC power supply, wherein the normal lighting module comprises an AC contactor, an A-phase relay, a B-phase relay and a C-phase relay, and the emergency lighting module comprises a DC contactor; a coil of the A-phase relay is connected between an A phase of the three-phase AC power supply and a null wire, a coil of the B-phase relay is connected between a B phase of the three-phase AC power supply and the null wire, a coil of the C-phase relay is connected between a C phase of the three-phase AC power supply and the null wire, a coil of the AC contactor is connected between each phase of the three-phase AC power supply and the null wire simultaneously through a normally open contact of the A-phase relay, a normally open contact of the B-phase relay and a normally open contact of the C-phase relay, and normally open contacts of the AC contactor are respectively in series connection with the A phase, the B phase and the C phase of the three-phase AC power supply and the null wire; and a normally closed contact of the A-phase relay, a normally closed contact of the B-phase relay, a normally closed contact of the C-phase relay and a coil of the DC contactor are sequentially in series connection and then are connected between the positive electrode and the negative electrode of the DC power supply, and normally open contacts of the DC contactor are respectively connected with the positive electrode and the negative electrode of the DC power supply.
Preferably, a normally closed contact of the AC contactor is also connected between the positive electrode of the DC power supply and the coil of the DC contactor.
Preferably, one normally open contact of the AC contactor, one normally open contact of the DC contactor, the normally closed contact of the A-phase relay, the normally closed contact of the B-phase relay and the normally closed contact of the C-phase relay are further connected between the positive electrode and the negative electrode of the DC power supply respectively through an alarm light.
Preferably, the emergency lighting module further comprises an alarm relay, one end of a normally closed contact of the alarm relay is connected with the negative electrode of the DC power supply through a buzzer, and the other end of the normally closed contact of the alarm relay is connected with the positive electrode of the DC power supply through the mutually parallel normally closed contacts of the A-phase relay, the B-phase relay and the C-phase relay; and one end of a coil of the alarm relay is connected with the negative electrode of the DC power supply, and the other end of the coil of the alarm relay is connected between the normally closed contact of the A-phase relay and the normally closed contact of the alarm relay through an operating button.
By adopting the technical scheme described above, the emergency lighting automatic switching system, which is provided by the present invention, can implement automatic switching and resetting of an emergency lighting system; and the structure is simple, the costs are low, and the practicability is greatly strong.
Brief Description of Drawings FIG. 1 is a structure diagram of a system in an embodiment according to the present invention.
Description of Embodiments
Embodiments of the present invention are described below in detail in conjunction with accompanying drawings, but the present invention may be implemented by various manners limited and covered by the appended claims.
As shown in FIG. 1, in the embodiment, an emergency lighting automatic switching system comprises a normal lighting module b that is connected with a three-phase AC power supply a and an emergency lighting module d that is connected with a DC power supply c, wherein the normal lighting module b comprises an AC contactor 1C, an A-phase relay 1YJ, a B-phase relay 2YJ and a C-phase relay 3YJ, and the emergency lighting module d comprises a DC contactor 2C; a coil of the A-phase relay 1YJ is connected between an A phase of the three-phase AC power supply a and a null wire, a coil of the B-phase relay 2YJ is connected between a B phase of the three-phase AC power supply a and the null wire, a coil of the C-phase relay 3YJ is connected between a C phase of the three-phase AC power supply a and the null wire, a coil of the AC contactor 1C is connected between each phase of the three-phase AC power supply a and the null wire simultaneously through a normally open contact of the A-phase relay 1YJ, a normally open contact of the B-phase relay 2YJ and a normally open contact of the C-phase relay 3YJ, and normally open contacts of the AC contactor 1C are respectively in series connection with the A phase, the B phase and the C phase of the three-phase AC power supply a and the null wire; and a normally closed contact of the A-phase relay 1YJ, a normally closed contact of the B-phase relay 2YJ, a normally closed contact of the C-phase relay 3YJ and a coil of the DC contactor 2C are sequentially in series connection and then are connected between the positive electrode and the negative electrode of the DC power supply c, and normally open contacts of the DC contactor 2C are respectively connected with the positive electrode and the negative electrode of the DC power supply c.
Therefore, by taking a power system of a transformer substation for example, under the condition of normal power supply, the three-phase AC power supply a for a transformer substation inner station is normal, the AC contactor 1C excites, the normally open contacts of the AC contactor 1C are closed, and a normal lighting power supply is provided for the transformer substation. Under emergency conditions, the three-phase AC power supply a for the transformer substation inner station loses power, the AC contactor 1C loses excitation, and the normally open contacts of the AC contactor 1C are opened; meanwhile, the coil of the A-phase relay 1YJ, the coil of the B-phase relay 2YJ and the coil of the C-phase relay 3YJ lose excitation due to power loss of the three-phase AC power supply a, and the normally closed contact of the A-phase relay 1YJ, the normally closed contact of the coil of the B-phase relay 2YJ and the normally closed contact of the C-phase relay 3YJ are closed, so that the DC contactor 2C directly starts to excite, the normally open contacts of the DC contactor 2C are closed, and an emergency power supply is provided for the transformer substation. After the three-phase AC power supply a for the transformer substation inner station is recovered, each relay and the AC contactor 1C excite, the normally closed contacts of the relays and the AC contactor 1C are opened, the DC contactor 2C loses excitation, the normally open contacts of the DC contactor 2C are opened, and the emergency lighting is automatically switched off. Therefore, automatic switching of the whole emergency lighting system can be implemented without needing of manual operations, and due to only utilizing conventional electrical components, the costs of the system are largely reduced.
In order to avoid a defect that an emergency lighting loop cannot be automatically switched under an emergency condition caused by dead sticking on the contacts of the A-phase relay 1YJ, the B-phase relay 2YJ and the C-phase relay 3YJ, a normally closed contact of the AC contactor 1C is also connected between the positive electrode of the DC power supply c and the coil of the DC contactor 2C; therefore, once the AC contactor 1C loses excitation, due to the fact that the normally closed contact of the AC contactor 1C is closed, the DC contactor 2C can directly start to excite, thereby ensuring emergency lighting automatic switching.
In order to enrich functions of the whole system and help workers to visually judge whether corresponding components generate faults, in the embodiment, one normally open contact of the AC contactor 1C, one normally open contact of the DC contactor 2C, the normally closed contact of the A-phase relay 1YJ, the normally closed contact of the B-phase relay 2YJ and the normally closed contact of the C-phase relay 3YJ are further connected between the positive electrode and the negative electrode of the DC power supply c respectively through an alarm light HR. Therefore, after an associated relay or contactor generates the fault, and when the B phase of the three-phase AC power supply a is lost, the coil of the B-phase relay 2YJ loses power, and the normally closed contact of the B-phase relay 2YJ is closed, so that the corresponding alarm light HR is turned on, and signal display to the fault is achieved.
In order to further enhance the alarming capacity of the whole system, in the embodiment, the emergency lighting module d further comprises an alarm relay 1ZJ, one end of a normally closed contact of the alarm relay 1ZJ is connected with the negative electrode of the DC power supply c through a buzzer FM, and the other end of the normally closed contact of the alarm relay 1ZJ is connected with the positive electrode of the DC power supply c through the mutually parallel normally closed contacts of the A-phase relay 1YJ, the B-phase relay 2YJ and the C-phase relay 3YJ; and meanwhile, one end of a coil of the alarm relay 1ZJ is connected with the negative electrode of the DC power supply c, and the other end of the coil of the alarm relay 1ZJ is connected between the normally closed contact of the A-phase relay 1YJ and the normally closed contact of the alarm relay 1ZJ through an operating button FA. Therefore, when a phase loss problem occurs, the buzzer FM can give out an alarm signal; and the buzzer FM can stop alarming by utilizing the operating button FA.
The foregoing descriptions are merely embodiments of the present invention, and the protection scope of the present invention is not limited thereto. All equivalent structural or process changes made according to the content of this specification and accompanying drawings in the present invention or by directly or indirectly applying the present invention in other relevant technical fields shall fall within the protection scope of the present invention.

Claims (4)

1. An emergency lighting automatic switching system, comprising a normal lighting module (b) connected with a three-phase AC power supply (a), and an emergency lighting module (d) connected with a DC power supply (c), wherein the normal lighting module (b) comprises an AC contactor (1C), an A-phase relay (1YJ), a B-phase relay (2YJ) and a C-phase relay (3YJ), and the emergency lighting module (d) comprises a DC contactor (2C); a coil of the A-phase relay (1YJ) is connected between an A phase of the three-phase AC power supply (a) and a null wire, a coil of the B-phase relay (2YJ) is connected between a B phase of the three-phase AC power supply (a) and the null wire, a coil of the C-phase relay (3YJ) is connected between a C phase of the three-phase AC power supply (a) and the null wire, a coil of the AC contactor (1C) is connected between each phase of the three-phase AC power supply (a) and the null wire simultaneously through a normally open contact of the A-phase relay (1YJ), a normally open contact of the B-phase relay (2YJ) and a normally open contact of the C-phase relay (3YJ), and normally open contacts of the AC contactor (1C) are respectively in series connection with the A phase, the B phase and the C phase of the three-phase AC power supply (a) and the null wire; and a normally closed contact of the A-phase relay (1YJ), a normally closed contact of the B-phase relay (2YJ), a normally closed contact of the C-phase relay (3YJ) and a coil of the DC contactor (2C) are sequentially in series connection and then are connected between the positive electrode and the negative electrode of the DC power supply (c), and normally open contacts of the DC contactor (2C) are respectively connected between the positive electrode and the negative electrode of the DC power supply (c).
2. The emergency lighting automatic switching system according to claim 1, wherein a normally closed contact of the AC contactor (1C) is also connected between the positive electrode of the DC power supply (c) and the coil of the DC contactor (2C).
3. The emergency lighting automatic switching system according to claim 2, wherein one normally open contact of the AC contactor (1C), one normally open contact of the DC contactor (2C), the normally closed contact of the A-phase relay (1YJ), the normally closed contact of the B-phase relay (2YJ) and the normally closed contact of the C-phase relay (3YJ) are further connected between the positive electrode and the negative electrode of the DC power supply (c) respectively through an alarm light (HR).
4. The emergency lighting automatic switching system according to any one of claim 1-3, wherein the emergency lighting module (d) further comprises an alarm relay (1ZJ), one end of a normally closed contact of the alarm relay (1ZJ) is connected with the negative electrode of the DC power supply (c) through a buzzer (FM), and the other end of the normally closed contact of the alarm relay (1ZJ) is connected with the positive electrode of the DC power supply (c) through the mutually parallel normally closed contacts of the A-phase relay (1YJ), the B-phase relay (2YJ) and the C-phase relay (3YJ); and one end of a coil of the alarm relay (1ZJ) is connected with the negative electrode of the DC power supply (c), and the other end of the coil of the alarm relay (1ZJ) is connected between the normally closed contact of the A-phase relay (1YJ) and the normally closed contact of the alarm relay (1ZJ) through an operating button (FA).
LU93361A 2016-12-14 2016-12-14 Emergency lighting automatic switching system LU93361B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
LU93361A LU93361B1 (en) 2016-12-14 2016-12-14 Emergency lighting automatic switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU93361A LU93361B1 (en) 2016-12-14 2016-12-14 Emergency lighting automatic switching system

Publications (1)

Publication Number Publication Date
LU93361B1 true LU93361B1 (en) 2017-05-31

Family

ID=65228199

Family Applications (1)

Application Number Title Priority Date Filing Date
LU93361A LU93361B1 (en) 2016-12-14 2016-12-14 Emergency lighting automatic switching system

Country Status (1)

Country Link
LU (1) LU93361B1 (en)

Similar Documents

Publication Publication Date Title
CN201909821U (en) Spare power automatic switching device tester
CN203800695U (en) Intelligent low-voltage dual power switching power distribution cabinet control device
CN105866670A (en) Online tripping and closing voltage tester for circuit breaker
CN115076081A (en) Fire pump control system with mechanical emergency starting and power frequency inspection functions
LU93361B1 (en) Emergency lighting automatic switching system
CN203800690U (en) Convenient connection type intelligent low-voltage dual power switching power distribution cabinet
CN211063344U (en) Automatic interlocking control system of two incoming line cabinets and one bus-bar cabinet
CN204425033U (en) A kind of emergency lighting automatic switchover system
CN208569006U (en) Industrial direct current 24V uninterruption power source
CN207939262U (en) Forced oil-circulated air-cooled transformer cooling control system
CN105207343A (en) Control circuit for conversion of two power sources
CN204314645U (en) A kind of low-voltage distribution system by screen break-make automaton
CN201600421U (en) Testing device of switch protector and switch protector
CN104079073B (en) Transformer station's 35kV capacitor discharge coil secondary circuit supervising device
CN210805643U (en) Vacuum circuit breaker running-in device
CN209028169U (en) A kind of high voltage display device
CN203039356U (en) 10kV inlet wire protection monitoring device
CN201388081Y (en) Two-set DC bus fault automatic mutual operation device
CN209925183U (en) Main/standby electrical control circuit of spray pump
CN106050630A (en) Fire pump controller with fire pump electric control start and mechanical emergent start
CN208174356U (en) A kind of alternate power autocast control device
CN105634369A (en) Three phase power source phase sequence detection and automatic switching control circuit
CN220985550U (en) Soft start control circuit of high-voltage motor
CN219179582U (en) Secondary current loop switching device
CN204046271U (en) Transformer station's 35kV capacitor discharge coil secondary circuit supervising device

Legal Events

Date Code Title Description
FG Patent granted

Effective date: 20170531