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Introduction
Published in Moncef Krarti, Energy-Efficient Electrical Systems for Buildings, 2017
The electrical engineer provides design options for power service and distribution as well as lighting, communication, fire detection and alarm, and general electrical equipment and space requirements. Chapters 5through 8 provide specific design approaches and case studies of power distribution systems for residential and commercial buildings. Moreover, the electrical engineer collaborates closely with the architect and the mechanical engineer to meet the requirements of any applicable codes and standards and any energy performance targets by integrating within buildings cost-effective energy efficiency technologies as well as cogeneration and distributed generation systems such as roof-mounted photovoltaic (PV) panels, as discussed in Chapters 9through 14.
Protection challenges and mitigation techniques of power grid integrated to renewable energy sources: A review
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2023
Hinal Shah, Jaydeep Chakravorty, Nilesh G. Chothani
In the modern era of electrical power systems, sustainability, dependability, reliability, availability, and maintainability have taken on a significant role. With greater dependency on the usage of IT and computers in the field of electrical engineering, the arduous and difficult work of an electrical engineer has become considerably easier in the current era. With the aid of various software and communication approaches, modern power systems can improve availability, reliability due to better fault avoidance, and efficiency by almost 100% practically Reddy (2019). This review paper highlights the various protection issues of the power system at transmission, distribution, and microgrid level when integrated with renewable energy sources and potential solutions put forth by different scholars have been compiled. The entire article is divided into the following sections: 1) literature survey, which was done based on integrative traditional methods, 2) Mentioned different protection challenges at transmission, distribution, and micro-grid level, and 3) Discussed possible mitigation techniques.
Seismic Repair of Circular Reinforced Concrete Bridge Columns by Plastic Hinge Relocation with Grouted Annular Ring
Published in Journal of Earthquake Engineering, 2021
Zachary F. Krish, Mervyn J. Kowalsky, James M. Nau
The research presented in this paper aims to expand the existing data set and better understand the mechanics of the plastic hinge relocation repair method by conducting tests on six repaired large-scale bridge columns and comparing their performance to that of the original columns. Specific attention is paid to the local response of the repaired region and how it behaves regarding the initial design assumptions. This paper outlines the repair methodology and resulting outcomes of each test, specifically focusing on the use of conventional, and easily accessible materials. The experimental observations are then used to provide the basis of a rational model by which an engineer can accurately predict the local and global behavior of the repaired system, and on which sound design recommendations can be established.
‘Rehabilitation aids for the blind’: disability and technological knowledge in Canada, 1947-1985
Published in History and Technology, 2020
Swail, unlike Klein, did not simply build one device for people with disabilities – he made building such technologies his main prerogative, even while he worked on various other projects alongside fellow NRC engineers. This included his work with D.W.R. McKinley, then Associate Director of the Radio and Electrical Engineering division of the NRC, as well as fellow engineer C.F. Patterson, to test and refine frequency multipliers, as well as frequency synthesis and time-signal control systems. Yet it was clear that Swail’s mind never strayed far from his primary goal of building machines that would be of use to people with disabilities pursuing technical and industrial careers. Swail notably incorporated the knowledge that he acquired while conducting these other projects into his own work on mobility and directional aids that made use of radio frequency.23 Swail also made his designs with a much larger population of people in mind, with long-term goals that reached far beyond the NRC. He not only sought to make working and practical machines, he aimed to fundamentally change the economic and social position of people with disabilities.