Protection and control method of centralized power supply high-voltage direct-current LED (light-emitting diode) street lamp system
A technology of LED street lamps and high-voltage direct current, applied in energy-saving control technology, lamp circuit layout, electric light sources, etc., can solve problems such as inconsistent brightness of street lamps, achieve good economic benefits, avoid costs, and avoid increasing effects
Active Publication Date: 2014-07-23
DELTA GREENTECH CHINA CO LTD
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Problems solved by technology
[0008] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a protection and control method for a high-voltage DC LED street lamp system with centralized power supply, which solves the problem of part of the power supply by controlling the brightness of the street lamp without adding a backup power module. When the module fails, the brightness of the street light is inconsistent and the problem of repeatedly turning on and off ensures the stable operation of the street light system
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[0030] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0031] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual impleme...
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The invention provides a protection and control method of a centralized power supply high-voltage direct-current LED (light-emitting diode) street lamp system. A plurality of parallelly connected power supply modules supply power for a plurality of LED street lamps. The protection and control method includes the steps: S1, computing rated total output current according to the number of the working power supply modules; S2, judging whether actual total output current of the power supply modules is higher than the rated total output current, shifting to a third step if the actual total output current of the power supply modules is higher than the rated total output current, and shifting to a fourth step if not; S3, controlling the street lamps to reduce brightness; S4, controlling the street lamps to increase the brightness. By the protection and control method, the brightness of the street lamps can be dynamically adjusted according to the number of the available power supply modules, so that the actual total output current is constantly kept lower than the rated total output current, stable work of all the street lamps is ensured, additional backup power supply modules do not need to be added, the cost of the street lamp system cannot be increased, the method solves the problems that the brightness of the street lamps is inconsistent and the street lamps are repeatedly turned on and off when parts of the power supply modules are invalid, so that road lighting reliability is improved, and the service lives of the street lamps are prolonged.
Description
technical field [0001] The invention relates to a protection control method for a street lamp system, in particular to a protection control method for a centralized power supply high-voltage direct current LED street lamp system. Background technique [0002] LED street lamps have the characteristics of high efficiency and long life, and are gradually being promoted in lighting applications. In the intelligent street lamp system, the LED street lamp can be remotely turned on, off and adjusted for brightness. The high-voltage DC street lamp system with centralized power supply has the advantages of high power supply efficiency, high power factor, and three-phase load balance of mains power. In the high-voltage DC LED street lamp system with centralized power supply, the street lamps of a road section use a power box to provide high-voltage direct current in a centralized manner. Wherein, multiple power modules are installed in parallel in the power box. The input of the po...
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IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 戚青山张涛
Owner DELTA GREENTECH CHINA CO LTD