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Stand-alone power system

About: Stand-alone power system is a research topic. Over the lifetime, 8650 publications have been published within this topic receiving 192397 citations. The topic is also known as: Stand-alone photovoltaic power system.


Papers
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Proceedings ArticleDOI
29 Apr 2001
TL;DR: In this article, the authors address voltage regulation issues that often arise from the application of distributed generation on distribution systems, and address the tradeoff between harmonic current injections, the risk of overvoltages, protective device coordination, and transformer life.
Abstract: Distribution systems have been designed to optimize the delivery of power in one direction. The installation of distributed generation (DG) in significant capacity will result in some conflicts with the operation of the system. A selected set of conflicts is described. One conflict might result in changes to overcurrent device timing and reach that degrade reliability and power quality for other customers on the feeder. Interconnection requirements can increase the risk of equipment damage due to ferroresonant overvoltages. Transformer connections for DG involve a tradeoff between harmonic current injections, the risk of overvoltages, protective device coordination, and transformer life. The paper also addresses voltage regulation issues that often arise from the application of DG on distribution systems.

125 citations

Patent
20 May 1991
TL;DR: In this paper, the authors present a method and system for storing electrical energy, and then using the stored energy to recharge automobiles, where a number of storage and recharging facilities are connected to a main power generating station.
Abstract: The present invention features a method and system for storing electrical energy, and then using the stored energy to recharge automobiles. The system of the invention features a number of storage and recharging facilities that are connected to a main power generating station. Power is generally demanded from the power station in the evening or during off-peak power demand periods, in order to obtain lower rates from the power utility. Also, off-peak power loading does not put a strain on the power system. The energy obtained from the power utility company is then stored at each recharging facility in a bank of capacitors. A high voltage transformer and rectifier arranged ahead of the capacitor banks converts the incoming AC high voltage power from the utility to the required DC voltage for capacitor storage. The controller distributes power to a number of charging bays that are connected to the capacitor bank. A vehicle needing charging pulls into an individual bay in the recharging facility, and is connected to a metering device having feedback control. A sensing unit interrogates the power remaining in the batteries of the vehicle, and passes this information onto a controller. In this manner, the exact amount of required energy is transferred to the vehicle.

125 citations

Journal ArticleDOI
TL;DR: In this paper, a new planning expansion model of an electricity and natural gas distribution system that has high penetration of distributed generation based on natural gas is presented, which entails lower investment costs as compared to traditional planning models that consider both systems as independent networks.
Abstract: This paper presents a new planning expansion model of an electricity and natural gas distribution system that has high penetration of distributed generation based on natural gas. The model entails lower investment costs as compared to traditional planning models that consider both systems (electricity and natural gas) as independent networks. This model is especially convenient for utilities that own both systems, as electricity and natural gas customers can derive benefits (via electricity or natural gas tariffs) if there are significant savings in investment costs. For fast-growing economies, the merging of electricity and natural gas distribution systems is seen as a promising business opportunity in which economies of scope can have lower investment costs, so there is a definite need for this type of approach.

124 citations

Journal ArticleDOI
TL;DR: In this paper, a simple linear programming model is developed to minimize the annual energy cost of a given customer, including PV investment cost, maintenance cost, utility electricity cost, subtracting the revenue from selling the excess electricity.

124 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe the development of a small-scale system designed to generate electricity from low temperature heat (e.g., solar energy) using n-pentane as the working fluid.

124 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202388
2022188
20213
20208
20196
201843