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ABSTRACT: 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 (EE) solution in high-tech buildings, especially when integrated with complimentary PQ measures. The paper is based on PQ audits conducted at different high-tech industries over the last years. It was found that the main problems for the equipment installed were voltage sags (or dips). Among all categories of electrical disturbances, voltage sags and momentary interruptions are the nemeses of the automated industrial process. The paper analyzes the capabilities of modern electronic power supplies and the convenience of embedded solution. Finally it is addresses the role of the Standards on the protection of electronic equipment and the implications for the final costumer. (C) 2010 Elsevier Ltd. All rights reserved.
Applied Energy. 01/2011;
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ABSTRACT: 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 (UPS) particularly when configured in distributed DC mode can become an Energy Efficient (EE) solution in high tech buildings especially when integrated with complimentary Power Quality (PQ) measures The paper is based upon PQ audits conducted at different IT-intensive modern building Some of the mayor objectives of the PQ studies 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 solutions It was found that the main problems for the equipment installed were harmonics and voltage sag (dip) Finally this paper demonstrates the impacts of generalized electronic devices on the PQ of the buildings and the implications on energy uses (C) 2010 Elsevier B V All rights reserved
Energy and Buildings. 01/2011;
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ABSTRACT: 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 can dim the lamp output smoothly and uniformly. This paper focuses on the harmonic characterization of modern HPS lamps connected to dimmable electronic ballasts. Harmonics under full and reduced power for several HPS lamps have been measured. It presents an investigation on the attenuation effect and a proposal of an index called the equivalent lamp index to characterize this effect on HPS lamps. Also it is concluded that using a combination of HPS lamps can result in a reduction of the current distortion.
Harmonics and Quality of Power (ICHQP), 2010 14th International Conference on; 10/2010
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ABSTRACT: Cordoba is an inland province of southern Spain. This paper presents the quantity of power that will be necessary to install for covering the electrical consumption of Cordoba's population. Multicriteria has been the followed method with selection of criteria and options for the new and renewable energy technologies assessment based on the analysis and synthesis of parameters under the information deficiency method.
Environment and Electrical Engineering (EEEIC), 2010 9th International Conference on; 06/2010
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Przeglad Elektrotechniczny 01/2010; 86(11A):48-53. · 0.24 Impact Factor
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ABSTRACT: 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 solutions. It has been found that the main problems for the equipment installed were harmonics and leakage currents. The widespread presence of electronic power supplies in buildings is, in most of the cases, the root cause of the proliferation of harmonics. This case study demonstrates the impacts of generalized electronic devices on the power quality of the buildings and the implications on energy uses.
Clean Electrical Power, 2009 International Conference on; 07/2009
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ABSTRACT: 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 by the hypermedia paradigm, which provides optimal support for many lifecycle phases of a system: commissioning, operator training, operation, and maintenance, to list a few. This paper focuses on the human-computer interaction (HCI) issues and provides hypermedia user-interface design guidelines for power applications.
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on; 06/2009
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ABSTRACT: 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 by the hypermedia paradigm, which provides optimal support for many lifecycle phases of a system: commissioning, operator training, operation, and maintenance, to list a few. This paper focuses on the human-computer interaction (HCI) issues and provides hypermedia user-interface design guidelines for power applications.
Isie: 2009 Ieee International Symposium on Industrial Electronics. 01/2009;
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ABSTRACT: Operators and management wilt 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 by the hypermedia paradigm, which provides optimal support for many lifecycle phases of a system: commissioning, operator training, operation, and maintenance, to list a few. This paper focuses on the human-computer interaction (HCI) issues and provides hypermedia user-interface design guidelines for power applications.
2009 7th Ieee International Conference on Industrial Informatics, Vols 1 and 2. 01/2009;
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ABSTRACT: 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 solutions. It has been found that the main problems for the equipment installed were harmonics and leakage currents. The widespread presence of electronic power supplies in buildings is, in most of the cases, the root cause of the proliferation of harmonics. This case study demonstrates the impacts of generalized electronic devices on the power quality of the buildings and the implications on energy uses.
Iecon: 2009 35th Annual Conference of Ieee Industrial Electronics, Vols 1-6. 01/2009;
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ABSTRACT: 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 solutions. It has been found that the main problems for the equipment installed were harmonics and leakage currents. The widespread presence of electronic power supplies in buildings is, in most of the cases, the root cause of the proliferation of harmonics. This case study demonstrates the impacts of generalized electronic devices on the power quality of the buildings and the implications on energy uses.
2009 International Conference on Clean Electrical Power (Iccep 2009), Vols 1 and 2. 01/2009;
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ABSTRACT: 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 by the hypermedia paradigm, which provides optimal support for many lifecycle phases of a system: commissioning, operator training, operation, and maintenance, to list a few. This paper focuses on the human-computer interaction (HCI) issues and provides hypermedia user-interface design guidelines for power applications.
Iciea: 2009 4th Ieee Conference on Industrial Electronics and Applications, Vols 1-6. 01/2009;
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01/2009: pages 696-700; , ISBN: 978-1-4244-4648-3
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01/2009: pages 187-191; , ISBN: 978-1-4244-2543-3
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01/2009: pages 92-97; , ISBN: 978-1-4244-4347-5
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01/2009: pages 136-141; , ISBN: 1935-4576
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01/2009: pages 3473-3478; , ISBN: 978-1-4244-2799-4
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Applied Energy. 88(4):1312-1321.
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pages 3473-3478;
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pages 187-191;
