CN202772664U

CN202772664U - Power supply device for power plant emergency lighting

Info

Publication number: CN202772664U
Application number: CN2012205141799U
Authority: CN
Inventors: 李郴秀
Original assignee: CHINA CEC ENGINEERING Corp
Current assignee: CHINA CEC ENGINEERING Corp
Priority date: 2012-10-09
Filing date: 2012-10-09
Publication date: 2013-03-06
Anticipated expiration: 2022-10-09

Abstract

Disclosed is a power supply device for power plant emergency lighting. The device is suitable to power plant emergency lighting of green lighting sources such as straight tube fluorescent lamps, compact fluorescent lamps and light emitting diode (LED) lamps. A channel of alternating current power is introduce from an alternating current factory through a bus, a channel of direct current power is introduced from a 220 V direct current bus of storage batteries arranged in a power plant in a centralization mode, the direct current power is inverted to standard sine wave alternating current 380 V power through an inverter and a transformer, and two channels of alternating/direct current power can be shifted or output to alternating current power through controllable silicon or a dual-power change-over switch. Therefore, incandescent light sources which are high in energy consumption and short in service life can be eliminated.

Description

Power plant's Emergency Lighting Supply device

Technical field

The utility model relates to power plant's emergency lighting power supply, is a kind of power plant's Emergency Lighting Supply device that can be applicable to all light sources such as fluorescent lamp.

Background technology

AC power and accumulator direct current supply power supply are adopted in the in the past emergency lighting of power plant, therefore, have to adopt incandescent lamp and iodine-tungsten lamp constant resistance light source, can't be the same with normal illumination, adopt energy-conservation, life-span novel green lighting source long, that burning time is short, can not satisfy the requirement of scientific and technological progress and national policy.In addition, the light sources such as fluorescent lamp are adopted in normal illumination, and the light sources such as incandescent lamp are adopted in emergency lighting, and the kind of two kinds of lightings is different, and is not attractive in appearance, and the light source of two kinds of operating states is different, and illuminating effect difference is large, affects staff's vision.Therefore, a kind of device of utility model converts accumulator direct current supply to AC power, and it is fully necessary that the same power supply is adopted in emergency lighting and normal illumination.

The utility model content

The technical problems to be solved in the utility model: a kind of new power plant Emergency Lighting Supply device is provided, the normal power source of emergency lighting adopts AC power, if a device is reverse into AC power with emergency lighting DC power supply in the station-service direct current system, reliably automatically switch between these two power supplys, satisfy the requirement of emergency lighting.

Utility model technical scheme: power plant's Emergency Lighting Supply device, draw one tunnel AC power from exchanging auxiliary bus bar, the storage battery 220V dc bus of power plant's concentrated setting draws one tunnel DC power supply, DC power supply is standard sine wave AC380V power supply through inverter and transformer inversion, and the two-way power of alterating and direct current all is AC power through controllable silicon or dual-power transfer switch switching output.

The beneficial effect of utility model: the power of alterating and direct current input, power supply is reliable, satisfies code requirement; Exchange the output sine ac power supply, quality of voltage is good; Exchange output, emergence lighting lamp is consistent with the normal illumination light fixture, can eliminate incandescent lamp, the green illumination light sources such as the straight tube fluorescent lamp that employing is lighted fast, compact fluorescent lamp, LED lamp; Storage battery direct current system by power plant's concentrated setting is drawn power supply, needn't establish in addition storage battery and corresponding monitoring device, is convenient to management, reduces investment outlay, and wiring is simple, failure rate is low, and the life-span is long.

Description of drawings

Accompanying drawing is EPS power plant Emergency Lighting Supply device winding diagram.

Among the figure: QF1-AC power lead-in circuit breaker; QF2-DC power supply lead-in circuit breaker; The V-voltmeter; D-check diode; The DC/AC-inverter; The TM-isolating output transformer; The static fast diverter switch of ATS-; The master switch of two sections output of QF3/QF4-bus; QF-380V or 220V feeder breaker; The input of 1-AC380V power supply; The input of 2-DC220V DC power supply; The 3-RS485 communication is uploaded to watch-dog and realizes intelligent monitoring.

Embodiment

Below in conjunction with accompanying drawing and example utility model is described further:

As shown in the figure, Emergency Lighting Supply draws one road AC380V AC power as working power from exchanging auxiliary bus bar, draw one road DC220V DC power supply as stand-by power supply through the storage battery 220V of power plant's concentrated setting dc bus, AC power and DC power supply establish respectively QF1 and the QF2 circuit breaker operates and protect introducing EPS device; The DC220V power supply is three single-phase distorted alternation current 220V through the inversion of DC/AC inverter, becomes the AC380V power supply of standard sine waveform through the TM isolating output transformer again.The static fast diverter switch of ATS can realize automatically switching to rapidly the DC bus powered or AC power of storage battery and switch to ac power supply by DC power supply after normal when AC power accident dead electricity, this is not in and requires switching time can switch with contactor or automatic change-over when strict.

The output AC bus is established two sections buses through bus master switch QF3/QF4, two sections buses respectively draw a telegram in reply source to emergency lighting distribution box through the QF feeder breaker, energy-conservation emergency lighting light source power supply to straight tube fluorescent lamp, compact fluorescent lamp, LED lamp etc. can be lighted fast no longer arranges the energy-dissipating type light sources such as incandescent lamp.

The check diode is set oppositely send electricity for preventing inverse overvoltage; Ammeter A and voltmeter V are set are used for monitoring circuit voltage and current size; QF3/QF4 is set as the master control protection switch of two sections output buses; The QF feeder breaker is as the control protection switch in every feedback line loop.

Claims

1. power plant's Emergency Lighting Supply device, draw one tunnel AC power from exchanging auxiliary bus bar, the storage battery 220V dc bus of power plant's concentrated setting draws one tunnel DC power supply, the two-way power supply switches the emergency light power supply to power plant each other, it is characterized in that: storage battery 220V dc bus one road power supply of power plant's concentrated setting is AC power through the DC/AC inversion, with exchange the AC power two-way power supply that auxiliary bus bar attracts and switch each other, switch and be output as AC power to power plant's emergency light power supply.

2. according to claim 1 power plant's Emergency Lighting Supply device, it is characterized in that the road DC power supply that the storage battery 220V dc bus of power plant's concentrated setting draws, be three single-phase distorted alternation current 220V through the inversion of DC/AC inverter, become again the AC power of standard sine waveform through isolating output transformer.