Intelligent lighting control system. It has the functions of soft start, voltage regulation, voltage regulation and power reduction, and intelligent control of light switch time. However, it only has time control device. It is controlled by time switch and time shifting. There is also voltage regulation instantaneous power off due to street light. Forced capacitor compensation, and the thyristor can not adapt to the capacitive load, so exit the lighting energy-saving market. In addition, due to the serious current and voltage harmonics, many cities expressly prohibit large-scale use.
The range of the inductor ballast to adapt to the power supply voltage is relatively narrow. The fluctuation of the power supply voltage is generally not more than ±3% in foreign countries. It is allowed to ±5% in a short time, ±10% in the domestic original, and then changed to 220V according to the IEC requirement. Within the range of 8% to +6%. When the power supply voltage is high, the line current increases, and the lamp operates at a super power, which shortens the life of the lamp. When the voltage exceeds the upper limit of 233.2V specified in the national standard GB13259, the damage rate of sodium lamp increases significantly. Because the supply voltage is too high, the sodium lamp will operate at the design load and the internal temperature of the pipe.
Since the adjustment control switch is connected in parallel with the reactor, there is no flashing phenomenon when switching, and there is no impact lamp, which is easy to extinguish the lamp and burn the lamp, which greatly prolongs the service life of the lamp and the ballast. The energy saving start and the power saving rate reach 20% to 40%. The system adopts mature and reliable technology, the manufacturing cost of the device is low, high harmonics are not generated, and there is no pollution to the power grid. In addition, since the system is centrally controlled on the low-voltage side of the transformer, operation and maintenance are very convenient. The new practical lighting energy-saving system is based on the description of the electrical principle of the single-phase power supply for the circuit lighting system, and is also practical for the three-phase power supply lighting circuit.
We used a new practical street lamp energy-saving device to conduct a power-saving test on a NG400 new sodium lamp, which was powered by 242V (the lowest voltage in the second half of the night) and 215V (the highest voltage after the micro-control device was adjusted). As a result, the power consumption of the lamps was respectively It is 486W and 377W, saving power 109W, and the power saving rate is 27.25%. According to the design requirements, the sodium lamp will cause self-extinguishing when the voltage fluctuates by more than 7%. When we use the new practical street lamp energy-saving device to test the NG400 new sodium lamp several times, the voltage fluctuation reaches 15% and has not caused self-extinguishing.
The new practical lighting energy-saving system is an intelligent power management system that mainly controls the output of a high-quality power supply. Therefore, in principle, the new practical lighting energy-saving system is suitable for all power systems, and the power-saving effect of the street lighting circuit is most significant. Therefore, the principle of using the new practical lighting energy-saving system is used in pure lighting circuits, such as urban roads, tunnels, parking lots, ports, airports and other lighting. However, it is allowed to have an incandescent lamp or a mixed light source.
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