Street lighting system for power quality monitoring and energy-efficient illumination control

This paper proposes a system for management, control and monitoring a group of LED luminaires of a street lighting infrastructure, enabling the measurement of certain parameters that are useful for a more proper and efficient operation of public lighting, while still monitoring the power quality of the electrical grid. These parameters include dimming level, power consumption, power factor, detection of pedestrians, malfunction in the luminaire and environmental conditions, such as solar irradiation, temperature and humidity. Two modules and a supervisory software compose the system. The first device is the smart module (SM), whose task is to measure the parameters stemming from the power grid as well as from the luminaire. The second is the control module (CM), which coordinates the data received from each smart module, store and subsequently send them to the supervisory system in a more suitable communication link. The supervisory system (SS) is responsible to save the information in a database, analyze and detect problems or even possible faults while sending commands to each CM. With the aim to evaluate the proposed system, it was performed experiments to demonstrate its operation as well as the power quality analysis capability. The results have shown energy efficiency potential due to the type of lamp used and the insertion of proposed system.