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Electric power
About: Electric power is a research topic. Over the lifetime, 73036 publications have been published within this topic receiving 636991 citations.
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TL;DR: In this paper, the authors provide a detailed review of the factors that affect the operation and efficiency of photovoltaic-based electricity generation systems, such as PV cell technology, ambient conditions and selection of required equipment.
Abstract: One of the most popular techniques of renewable energy generation is the installation of photovoltaic (PV) systems using sunlight to generate electrical power. There are many factors that affecting the operation and efficiency of the PV based electricity generation systems, such as PV cell technology, ambient conditions and selection of required equipment. There is no much study that presents all factors affecting efficiency and operation of the entire PV system, in the literature. This paper provides a detailed review of these factors and also includes suggestions for the design of more efficient systems. The presented detailed overview will be useful to people working on theory, design and/or application of photovoltaic based electricity generation systems.
230 citations
Patent•
07 May 2010
TL;DR: In this paper, a utility employs a method for estimating available operating reserve by estimating the power consumption behavior of at least one device serviced by the utility during a period of time to produce power consumption data.
Abstract: A utility employs a method for estimating available operating reserve. Electric power consumption by at least one device serviced by the utility is determined during at least one period of time to produce power consumption data. The power consumption data is stored in a repository. A determination is made that a control event is to occur during which power is to be reduced to one or more devices. Prior to the control event and under an assumption that it is not to occur, power consumption behavior expected of the device(s) is estimated for a time period during which the control event is expected to occur based on the stored power consumption data. Additionally, prior to the control event, projected energy savings resulting from the control event are determined based on the devices' estimated power consumption behavior. An amount of available operating reserve is determined based on the projected energy savings.
230 citations
TL;DR: In this article, the concept of the combined use of wind power production and hydro storage/production is exploited, through the development of an operational optimisation approach applied to a wind generator park with little water storage ability.
229 citations
TL;DR: A review of different waste heat recovery systems has been conducted, to lay out the potential recovery efficiencies and suitability for marine applications as discussed by the authors, which helps in identifying the most suitable heat recovery technologies for maritime use depending on the properties of shipboard waste heat.
228 citations
TL;DR: In this paper, the authors provide a state-of-the-art summary of risk assessment in energy trading, including portfolio analysis and hedging instruments, and provide a comprehensive critical literature survey of what has been applied to date in the power markets.
Abstract: This paper provides a state-of-the-art summary of risk assessment in energy trading. Techniques from financial engineering are needed by electric energy companies to manage price risk. These tools are needed by suppliers, distributors, and traders in a competitive electric power marketplace. Tools that have been adapted to the specific environment of the electric power system include portfolio analysis and hedging instruments. This paper provides a comprehensive critical literature survey of what has been applied to date in the power markets and which areas continue to need additional research. One example market scenario is used throughout the paper to demonstrate the usefulness of the risk assessment methods.
227 citations