LED street lighting: A power quality comparison among street light technologies
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Citations
On waveform distortion in the frequency range of 2 kHz–150 kHz—Review and research challenges
A decision support system for assessment of street lighting tenders based on energy performance indicators and environmental criteria: Overview, methodology and case study
Design of Smart LED Streetlight System for Smart City With Web-Based Management System
A smart LED luminaire for energy savings in pedestrian road lighting
A Study to Improve the Quality of Street Lighting in Spain
References
Investigation of LED street lighting’s disturbances
Comparative study of electromagnetic and electronic ballasts - an assessment on harmonic emission
Related Papers (5)
Recommendations for energy efficient and visually acceptable street lighting
Frequently Asked Questions (13)
Q2. What are the future works mentioned in the paper "Led street lighting: a power quality comparison among street light technologies" ?
It is therefore important to perform regular measurements of the harmonic emission of LED street lamps so as to prevent power quality problems in the future.
Q3. What are the main issues that must be addressed when designing lighting for outdoor applications?
Lighting designed for outdoor applications must address multiple issues such as proper light distribution, glare, light pollution, energy usage and lifetime.
Q4. What are some advantages of dimmable electronic ballasts?
To sum up, some advantages of dimmable electronic ballasts are their energy savings (up to 50%), wider dimming range through wired or wireless central dimming control, and their robustness and reliability.
Q5. What is the highest current peak for electronic ballasts connected to HPS lamps?
Regarding the high-frequency spectrum, the highest current peak is reached by electronic and electromagnetic ballasts connected to HPS lamps, being 3mA (around 1% of FND) for the electronic ballast and 6mA for the electromagnetic ballast (2% of the FND).
Q6. What is the current of the LED street light?
The first street light monitored was a Thorn lamp, with an active power of 25W, and according to their measurements other values are 6.8% total harmonic distortion of the current (THDI) and a displacement power factor (DPF) of 0.96.
Q7. What is the main benefit of reducing the THDI in street lighting lamps?
The main benefit of reducing the THDI in street lighting lamps occurs because such lamps are always connected in groups, so the total emission can be large.
Q8. What is the role of the Department of Energy in the development of solid state lighting?
As an example, the U.S. Department of Energy acts as a catalyst to drive R&D breakthroughs in efficiency and performance, and to equip buyers to successfully apply solid state lighting.
Q9. Why is the interaction between the end-user and the lamp of the future important?
One interaction is due to the emission by enduser equipment, but the most important is due to the low impedance created by end-user equipment.
Q10. What are the advantages of LED lighting?
Although it is not widely used in street lighting, there are many advantages from the use of LED lamps such as very low power consumption, and high efficiency (124 lm/W in 201019), among others.
Q11. What is the effect of the switching frequency in the LED lamps?
From this the authors can conclude that in the LED lamps, the peak around 40 kHz is also due to the switching frequency of the active power factor correction circuit.
Q12. What is the trend of the LED lamp with the electronic ballast?
The trend followed by the two spectra from the HPS lamp with the electronic ballast and the LED lamp both show a peak (one around 2.8 kHz and the other around 6.1 kHz), whereas the trend of the HPS lamp with the electromagnetic ballast shows a decreasing tendency.
Q13. How does the lamp perform after 4 minutes?
It is possible to see that after 4 minutes the lamp appears to be stable in Watts (Figure 10), but if the authors remove the four first minutes, a decreasing tendency also appears.