electric power Articles
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Hidden failures in electric power systems
Hidden failures in equipment are those failures which occur at random and that do not lead to any discernible change in the state of the network and, therefore, remain undetected. Although hidden failures can occur in any equipment, the hidden failures in protective equipment have attracted a good deal of attention in recent years. Admittedly these failures are rare but, when the power system is ...
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Studies of interstate electric ties in Northeast Asia
The formation of common electric power space (CEPS) in Northeast Asia (NEA) is considered; the prospective electric power demand of the NEA countries and potential electricity market niches in the region up to the year 2020 are evaluated; export power projects from Russia to other NEA countries are analysed and ranked by priority; the mathematical model for economic effectiveness assessment of ...
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Harmonic assessment of electrical power systems
Advances in semiconductor technology have resulted in an escalation in the numbers and power ratings of non-linear loads connected to the power system. At all voltage levels, equipment is being installed which generates harmonics. At transmission levels, FACTS devices are being installed for controlling power flow, HVDC links are used to transfer real power between AC systems and large industries ...
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Assessing the impact of interdependencies in electric power systems
Electric power systems (EPS) greatly support our daily activities and are therefore among the most prominent critical infrastructures that need to be reliable and resilient in providing their services. They are rather complex and vulnerable systems, being composed by two interdependent infrastructures: the electric infrastructure (EI) and its information-technology-based control system (ITCS), ...
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The effects of dynamic residential load participation: penetration levels for operational impact on reliability
Building an electrical load system that uses prioritised loads has been suggested as a means of approaching the overloading of the aging electrical infrastructure and thus increasing system reliability. In this paradigm, local controls would shut off electrical loads when overload conditions are being approached in the electrical power system. An unresolved question is how these systems might be ...
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Innovation management: experience from the perspective of the electric power industry
IBERDROLA's Corporate Unit for Research and Development (R&D) is charged with the task of defining the strategy, general policies, and criteria of technological innovation that shape the development of projects and the utilisation and commercialisation of products and services. With this aim in view, several tools to assist innovation management have been developed. The Technological Information ...
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Duke Energy Peru - uses of Xp3 in equipment located in Peru and Columbia
Uses Xp3 in their equipment in Peru and Columbia. Duke Energy, is the largest electric power holding company in the United States, with assets also in Canada and Latin America. Duke Energy Peru has operations in Argentina, Chile, Brazil, Ecuador, El Salvador, Guatemala and Peru. The level of business, coupled with over 100 years of experience, make Duke Energy a world leader in the development ...
By Xp3 Canada
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Evaluation of power input efficiency for China's typical cities based on the DEA and SFA models
China is entering a rapid developmental stage of urbanisation characterised by tremendous economic development. However, many prominent problems have existed for a long time. Among these, problems on power efficiency should be addressed. The extended models of data envelopment analysis (DEA) and stochastic frontier analysis (SFA) were used to analyse city input-output efficiency including ...
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Policy and economic issues of electrical power and energy systems
During the last quarter of the 20th century, many developments have served as catalysts for changes in the national energy policies of countries throughout the globe. These catalysts have affected the institutions and energy framework of virtually every country. In the majority of countries, the predominant electricity supply institution is the electric utility monopoly characterised by some ...
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Reform of China's electric power industry: facing the market and competition
China has the second largest electricity supply system in the world. Since implementation of reform and opening-up policy, the Chinese power industry has grown rapidly. Now the Chinese power sector is undergoing a major transformation from a state-owned sector to a market-oriented industry. This paper presents the background and main tasks of this new initiative, the progress made so far and the ...
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Series-parallel power system optimisation using a harmony search algorithm
Today's important industrial companies seek maximum benefit with minimum investment. In order to achieve this goal, design engineers depend on cost optimisation techniques. This work uses a harmony search algorithm (HS) meta-heuristic optimisation method to solve the problem of power systems design optimisation. We consider the case where redundant electrical components are chosen to achieve a ...
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Control of the regimes of the electric power systems and deregulation
This paper presents a survey of characteristics, balances, stabilities, reliability and regimes of Electric Power Systems (EPS) and Interconnected Electric Power Systems (IEPS). They are the most complicated and important 'machines' that have ever been created by humankind. Introduction of deregulation in the EPS will require and impose new systems, new algorithms and new rules for control. EPS ...
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Electric Power Supply Quality in ship systems: an overview
Power Supply Quality (PSQ) has become an important concern for ship electric systems. Thus, deviations of voltage from nominal values and wave-shapes could cause several problems onboard. Considering that ship system electrification eventually dominates according to the All Electric Ship concept, PSQ will be a key-factor of the normal operation, survivability and safety aboard. The paper provides ...
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Agents controlling the electric power infrastructure
The electric power grid is evolving from a centrally controlled grid with only a handful of regulated monopolies to an open, liberalised electricity market. In addition, more and more small-scale dispersed generators are deployed in distribution nets. This puts extra stress on the power grid, in an era when electricity is one of the most important commodities for economic, industrial and everyday ...
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Badsha Textiles captive power plants, Bangladesh - Case Study
Badsha Textiles Ltd. one of the largest textiles factory in Bangladesh. Md. Badsha Miah is the Managing Director of Badsha Textiles Ltd., who is one of the CIP (Commercially Important Person) of the Bangladesh Government. Approximately 20,000+ employees work at this factory. Badsha Textiles Ltd. has been successfully operating GE’s Jenbacher gas engines since 2011. In 2011 they have ...
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Justification of the continued development of the peaceful use of nuclear energy
The argument for justification of the nuclear electric power development is examined in the following terms: practicability, economic and new build-up; effects on health; safety; security; the environment; issues and opportunities to overcome barriers to its development are identified. Uncertainties are identified in the areas of health and security that must be acknowledged and tackled from an ...
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Discrete event simulation of the post-earthquake restoration process for electric power systems
This paper describes a discrete event simulation model of the post-earthquake restoration process for electric power systems. The model explicitly represents the real-life restoration process, enabling development of geographically disaggregated, quantitative restoration curves with uncertainty bounds, a dynamic map showing the spatial distribution of outages changing over time, and information ...
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Risk assessment of catastrophic failures in electric power systems
The declining reliability of the US electric power system is raising major concerns among both politicians and power engineers in the USA. One of the reasons put forward by the North Electric Reliability Council (NERC) is the detrimental role played by the protection systems during large disturbances, which tend to help the perturbations to propagate through over-tripping of fault free system ...
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Electric power systems real-time monitoring and control
In recent decades, several improvements have been achieved in power system operation and control. The evolution was mainly in the development of computational and communication systems. Both areas allowed the analysis of complex models of power system operation and control that resulted in a more flexible system controlled in almost real-time mode. All these improvements favoured the change of ...
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A study on a systematic method for evaluating values of raised concerns
The objective of this study is to develop a methodology that can externalise potential concerns and evaluate the values of the concerns raised in corporations. By implementing this methodology into corporate governance, it is expected to improve the work environment and enhance the capability for the corporate governance through supporting the internal autonomic purification. This study comprises ...
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