Power quality in high-tech campus: A case study

Abstract

This paper presents preliminary results from a power-quality audit conducted at a high-tech campus over the last year. Voltage and current were measured at various R&D buildings; it was found that the main problems for the equipment installed were voltage sags and surges. The paper examines the causes and effects of power disturbances that affect computer or any other microprocessor-based equipment and analyses the auto-protection capabilities of modern power supplies. The convenience of ‘enhanced power supply’ or ‘low-cost customer-side’ protection solutions is also discussed. Finally, it addresses the role of the standards on the protection of electronic equipment and the implications for the final customer.

Power quality immunity in factory automation

“…In order to identify the most likely causes of problems detected and before the Power Quality monitoring, on-site inspections of equipment and installations were conducted over the first week of both studies. The power site inspection followed well-known approaches [4], [5], [6], this process included: − A walk-down of the facility's electrical system to inspect the condition of equipment and becoming familiar with the electrical system. − Interviewing facility electrical personnel and end-users on failure of equipment.…”

DSP algorithm for the real time detection of power quality surge transients

“…Open-circuit voltages, on the other hand, show little variation within a building because the wiring provides little attenuation. Table 5 of [13] includes a matrix of location categories, types of surges, peak voltages, and peak currents provided as a guide toward the selection of an appropriate set of design parameters or tests.The values shown in that table represent the maximum range and correspond to a "medium exposure" situation. For less exposed systems, or when the prospect of a failure is not highly objectionable, one could specify lower values of open-circuit voltages with corresponding reductions in the discharge currents.…”

Managing Campus Energy: Compromising between Rapid Needs and Environmental Requirement

“…The development of campus around the world both in terms of technology and educational process to become a modern campus, also requires electrical energy continues to increase. This can not be avoided because of high energy demands of the modern campus development [6]. But on the other hand, the campus is also one place to be able to develop technology for new power plants through their research and development activities.…”