Before viewing February 2013 No. 3 "Super Bowl" contest, nobody thought he would witness the blackout happened in world-class competitions. After a large number of high-pressure gas discharge lamp suddenly went out, the audience of fans, officials, staff and game players spent 34 minutes in the dark.
Next, why Superdome in New Orleans suddenly extinguished lantern filled the entire Internet reports.
One paper reported that the led high bay light price between the power company and the stadium's electrical equipment on the year in December just replaced, so the outage should be independent of the device. After detection of the stadium and found that during the game without any overload load.
Another report mentioned that the leadership of the Super Dome before the game was very concerned about the electrical system equipment, although not repair all the equipment, but has done a lot of maintenance work. Feeder for the stadium to do the test and found that the presence of power quality problems.
The stadium is due to finalize the process of conveying the power protection relay detects a problem, the system automatically shut down. Whether power is mainly due to equipment malfunction, improper maintenance or cognitive errors, the blackout has caused serious economic losses as well as interrupt the game.
Competition as evidenced by the "Super Bowl" to provide adequate emergency lighting at any level of sports events are necessary. When it comes to lighting, indoor venues and outdoor venues require no dead switch.
Similar to other lighting systems, stadium lighting system requires maintenance. Before using the high-pressure gas discharge lamps, incandescent lamps are standard stadium lighting. Today, the stadium lighting standards for metal halide lamps high-pressure gas discharge lamp. In most cases using a 400W, 750W, 1000W, 1500W or 2000W metal halide lamp.
Now, however, still have to continue to use the probe to start the stadium lights, there are nearly 20 years to upgrade the stadium to pulse start lamps. Now, there are many stadiums using specially designed lamp magnetic ballast for high pressure gas. Shown in comparison restart time, dimming and full-spectrum performance table a warm-up time for different lighting techniques.
Before each game, game party or stadium staff required for each set of high-pressure gas discharge lamp for testing to ensure the normal start lamps, lighting satisfied tournament. If there is a fault of excessive lighting, you need to be replaced immediately. The need for the arena lighting and brightness levels were detected at various locations, ensuring that the needs of the TV shoot. To light up all the lights in the evening before, to provide sufficient time for inspection and adjustment of the TV camera. In addition, after the end of the game, the staff needs to track and auditorium were cleaning, finishing, so still need a few hours of illumination.
Depending on the size of the stadium are different (such as a local university soccer field, basketball court or football field professional super dome) that can be powered by one or more of the power company. The stadium is equipped with a large number of complex electrical loads, although outdoor load up the majority, but the load is far more than that. Indoor and outdoor stadium scoreboards systems, broadcast systems, office equipment and air conditioning systems require power.
The first way: select several points on the power source supply line, when the power supply system due to a power failure caused by energy depletion, at these points the energy supplement;
The second way: add heat to trigger the lighting system to replace the high-pressure gas discharge lamp system;
The third way: the choice of quality power supply for the stadium.
The following detailed description of some details.
1) High quality power supply contract
Many power companies can provide high reliability power supply feeder. At present, this has been achieved upgrade feeders can lead to a dedicated line from the substation, one or two companies share a line. This feeder has a large number of historical way transmission of data to prove its reliability. Users will pay a higher price this service. However, most of the venues and stadiums usage is not high, providing quality power supply is not the best way to choose.
2) high-pressure gas discharge lamp installed thermal trigger
Many manufacturers of metal halide lamp provides an additional thermal trigger system. The system senses when the lamp is off, it will provide a high-voltage pulse starts to restart the led street light with solar panel. When the lamp arc discharge breakdown occurs, you can re-enable the lamp warm start. The system itself is in standby mode consumes some energy, to a certain extent, reduce the energy performance of the lighting system. The system is bulky, expensive, and not suitable for all lighting, and some even require you to reinstall lamps.
3) install an uninterruptible power supply (UPS) in a lighting system
Uninterruptible power supply to solve a lot due to line voltage failure caused power quality problems. Some UPS manufacturers to produce high-pressure gas discharge lamp with a dedicated uninterruptible power supply systems. Uninterruptible power supply is installed in all high-pressure gas discharge lamp system is very economical. High-pressure gas discharge lamp from a comprehensive system size, the use of the frequency and the economic impact on customers generated and other considerations, an uninterruptible power supply when the lights go out is not the best choice. In addition, the use of an uninterruptible power supply will increase the additional load, take up some space, and the need to increase economic investment.
4) The high-pressure gas discharge lamp system converted into other systems
Another possibility is to replace the existing system with another high-pressure gas discharge lamp lighting system. However, because of the stadium lighting system has some unique lighting needs, so some limitations exist in the selection of other alternative lighting system. Although the annual lighting contest only a dozen times, but there are many other cases require the use of the venue lighting. Therefore, reducing the energy consumption of the lighting system for the stadium is definitely an advantage.
5) Full-spectrum lighting is lighting conditions closest to daylight conditions
The television cameras are now fully digital operation on the basis of full-spectrum lighting conducted. Use full-spectrum lighting will enhance the television image capture technology and camera performance under dynamic conditions stadium.
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