Topic
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 published on a yearly basis
Papers
More filters
TL;DR: In this paper, the authors highlight the new hydrogen production and storage technology, its efficiency and the impact of the policy context on its development, and provide a comprehensive techno/socio/economic study of long-term hydrogen based storage systems in electrical networks.
63 citations
TL;DR: In this paper, the authors present the analysis of power quality in a feeder of the urban grid in the city of the Florianopolis, Brazil, with the integration of grid-connected PV systems as distributed generation.
63 citations
Patent•
03 Dec 2001
TL;DR: In this article, a wind turbine is secured to a cart for movement of the cart and the wind turbine, which can move to locations along a track relative to wind direction to power the second pump.
Abstract: A hydro-electric generating system for generating electrical energy and storing kinetic energy, in which, the process begins with the top reservoir filled with water directly from a river or local utility via a conduit. Then a multi megawatt wind turbine, such as the NEG micon 2-megawatt turbine, placed at heights, on the side of the structure that have never been reached with a man made mast or tower. The mega structure along with the extreme heights of this system will achieve increased wind shear on a high average. The wind turbine is secured to a cart for movement of the cart and the wind turbine. The wind turbine can move to locations along a track relative to wind direction. The wind turbine is the means to power the second pump. The second pump constantly replenishes the upper reservoir with water. The wind turbine produces more electricity than what the second pump requires. This surplus of electricity is sent, via electrical conductors to the regional power grid, which distributes power to cities and towns. The hydroelectric generator/pump, reversible, now has the kinetic energy above that is necessary to turn it's rotor blades and generate megawatts of electricity. This electricity is also sent to the electrical grid system via the electrical conductors. The hydro-electric generator/pump, which is reversible, is also used to replenish the upper reservoir. When back fed with electricity from the regional grid system or the wind turbine. The hydro-electric generator/pump, reverses and functions as a mega pump. This is efficient during off peak periods, when electricity is in less demand and, sold at a lower rate The water that is stored during off peak is released from the upper reservoir during peak periods. The water will flow down the conduit to the hydro-electric generator producing electricity in the greatly needed peak periods, this cycle is repeated as often as necessary.
63 citations
TL;DR: In this article, the problem of allocating a capital budget to solar panels and storage to maximize the expected revenue in the context of a large-scale solar farm participating in an energy market is considered.
Abstract: We consider the problem of allocating a capital budget to solar panels and storage to maximize the expected revenue in the context of a large-scale solar farm participating in an energy market. This problem is complex due to many factors. To begin with, solar energy production is stochastic, with a high peak-to-average ratio, thus the access link is typically provisioned at less than peak capacity, leading to the potential waste of energy due to curtailment. The use of storage prevents power curtailment, but the allocation of capital to storage reduces the amount of energy produced. Moreover, energy storage devices are imperfect. A solar farm owner is thus faced with two problems: 1)deciding the level of power commitment and 2)the operation of storage to meet this commitment. We formulate two problems corresponding to two different power commitment approaches, an optimal one and a practical one, and show that the two problems are convex, allowing efficient solutions. Numerical examples show that our practical power commitment approach is close to optimal and also provide several other engineering insights.
63 citations
13 May 1996
TL;DR: A novel utility connected photovoltaic power generation system with unity power factor and uninterruptable power system facility and its control strategy are proposed and has the following advantages compared with the conventional utility connected PV system.
Abstract: In this paper, a novel utility connected photovoltaic power generation system with unity power factor and uninterruptable power system facility and its control strategy are proposed. The proposed photovoltaic (PV) system is connected in parallel between the utility and load. The PV system provides an uninterruptable voltage to the load, a maximum power tracking to solar array, and power factor correction to the utility. The proposed system has the following advantages compared with the conventional utility connected PV system: harmonic elimination function; feeding the photovoltaic energy to the utility; and providing the uninterruptible power source battery to the load. In the case where the photovoltaic array system is in a state of poor power generation, the battery and capacitor of the PV system are charged by a three phase utility source and the inverter in the PV system only provides the reactive current to eliminate the harmonic current exited on the utility. In the normal operation mode, the PV system supplies active power to the load and reactive power to the utility in order to maintain the unity power factor and to regulate AC load voltage.
63 citations