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This paper presents the results of a set of measurements to study changes in harmonic emission from a domestic customer due to the introduction of energy-efficient lamps (CFL and LED lamps). This emission has been studied through both magnitude and complex harmonic current. We can see that the emission depends on the lamps that are connected as a background. Sometimes adding a new device reduces the...
The main objective of this paper is to describe a technique for optimize the capturing and processing of voltage and current signals at various points of the power system. The FPGA enables parallel processing of multiple signals. We present preliminary results with FPGA-based embedded system architecture for six-processing signals. A second objective is use of Precision Time Protocol to Synchronise...
In this paper, several high power lighting networks based on high pressures sodium (HPS) lamps have been set up. These have been chosen because of they are used in public lighting. Both electromagnetic and electronic ballast have been used with the mentioned lamps. They have also been tested with different levels of power using dimming for a 220 V power supply in the case of electronic ballast which...
With the generalized use of microelectronic devices, server computers and other susceptible equipment, the subject related to power quality (PQ) and its relationship to vulnerability of high performance plants are becoming an increasing concern to the industry. This paper addresses how uninterruptible power supply (UPS), particularly when configured in distributed DC mode, can become an energy efficient...
Energy efficiency (EE) improvement is one of the most important targets to be achieved on every society as a whole and in buildings in particular. Energy Smart Building aims to accelerate the uptake of EE, healthy buildings that by integrating smart technology and solutions consume radically little resources while enhancing the quality of life. This paper addresses how uninterruptible power supply...
In this paper, several high power lighting networks based on high pressures sodium (HPS) lamps with rated lamp powers of 70, 150 and 250 W have been set up. They have also been tested with different levels of power using dimming for a 220 V power supply. These have been chosen because of they are used in public lighting. Each luminaire consists of sodium lamp with dimmable electronic ballast, which...
In this paper, several high power lighting networks based on high pressures sodium (HPS) lamps with rated lamp powers of 70, 150 and 250 W have been set up. They have also been tested with different levels of power using dimming for a 220 V power supply. These have been chosen because of they are used in public lighting. Each luminaire consists of sodium lamp with dimmable electronic ballast, which...
This paper presents results from a PQ audit conducted in an IT-intensive modern office building. Some of the mayor objectives of the PQ study were: detecting the main involved disturbances by PQ monitoring, identifying the power disturbances root causes, characterizing the electromagnetic compatibility level of equipments and installation and providing guidelines for implementing energy-efficiency...
This paper presents results from a PQ audit conducted in an IT-intensive modern office building. Some of the mayor objectives of the PQ study were: detecting the main involved disturbances by PQ monitoring, identifying the power disturbances root causes, characterizing the electromagnetic compatibility level of equipments and installation and providing guidelines for implementing energy-efficiency...
Operators and management will need an increase amount of intelligent support from power system SCADA to cope with the retrieval, filtering and interpretation of the relevant data, prior to defining the multi-process control tasks. Some examples of these tasks include optimal power flows, available transmission capacity, and transfer cost analyses. The management of the power grid data can be optimized...
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