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Earth fault management in medium voltage networks involves assessing of customer interruptions, challenges in fault clearing processes and safety issues. The major advantage by allowing sustained earth faults is the avoidance of customer interruptions. However, the network operation with sustained earth faults does not only include welfare. The paper will generally discuss the advantages and disadvantages...
The purpose of this paper is to gather and document the most pertinent information about the “Smart Grid, ” explore its many components, and propose some suitable attributes while considering Distributed Generation (DG) interconnection as a major integral part. Effects of various Smart Grid components on Generation, Transmission, Substation and other sections of the power systems are identified and...
Microgrids are an important asset to power systems since they address the technical issues of long-distance power transmission and the environmental and economical concerns related to the traditional power generation. In the research study, first the collected information from the AADC and TRANSCO was used to develop a model for Al-Ain power network. Based on these information, the network loads are...
This study is the result of management's intention to optimize their various capital investment decision processes within the organization. Since huge amount of corporate funds are allocated to capital expenditure, the management of the firm decided to look for an alternative capital rationing technique to revise the traditional method (i.e. net present value) that they are currently using. The alternative...
As technology and economic development, the requirements of community power quality, continuity and reliability are increasing. Contradiction between supply and demand will become more and more prominent. Power distribution system is an important part of the user connection. It is directly related electrical safety and reliability to the user. At present 10 kV Substation is and implementation of power...
United cooperative services began implementation of several levels of distribution automation approximately 10 years ago. Since that time, the cooperative has seen many successes and has learned valuable lessons from the system implementation. Automating a distribution system outside of the substation can bring substantial benefits to the end-consumers by improving system reliability, planning, design,...
BC Hydro, one of the largest electrical utilities in Canada, has experienced a substantial growth in distributed generating sources that are connected to its Distribution System (12 kV, 25 kV and 34.5 kV). These Power Generators (PGs) are mostly run-of-river hydraulic generating plants with capacities ranging from 1.0 to 15.0 MW. This increment in the number of independent power producers (IPPs) is...
This presentation will cover the first application and performance of a sodium-sulfur (NaS) battery installed in a U.S. utility grid application for peak-shaving, plus present other applications underway to demonstrate the advantages of large-scale energy storage (greater than 7 MWh). These applications include using battery energy storage to improve power reliability in the grid, improve the dispatch-ability...
The following topics are dealt with: transmission and distribution system planning; wind generation; reliability; emergency response; disaster; FACTS; HVDC; power quality; protective relaying; transformer; circuit breakers; cables; insulators; switchgear; fuses; tower; poles; conductors; electric machines; drives; and substation.
Weather, equipment failure, and contact by foreign objects cause faults, trips, interruptions, and outages. Most faults are either permanent, requiring repairs before service can be restored, or truly temporary, causing no lasting impairment to the system. Monitoring programs at Texas A&M University have instrumented dozens of feeders at North American utility companies for multiple years. Sensitive...
The availability for use or reliability of a telecommunications installation is dependant on a number of critical factors. Perhaps the most fundamental is whether or not the facility is online with all systems functioning correctly. This state can only occur, and be relied upon, if the systems are operating in environments that they have been designed for and in particular are receiving power of an...
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