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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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Journal ArticleDOI
TL;DR: The technical novelty of this paper presented refers to the implementation of the local energy balancing system in the low-voltage distribution system using competitive electricity market rules and application of nonlinear programming for overall optimization.
Abstract: The increasing penetration of distributed generation (DG), especially RES, brings new challenges for network operators to ensure energy balancing and quality of power supply. The uncontrolled electricity generation in a distribution network may have a negative impact on power system operation. The operation of DG, particularly RES, should be optimized to ensure technical standards of energy delivery. The optimization can be carried out using the concept of local energy balancing and ancillary services (ASs) provided by the DG and RES. As shown, they are able to ensure the development of local energy resources preserving the technical standards of network operation. The technical novelty of this paper presented refers to the implementation of the local energy balancing system in the low-voltage distribution system using competitive electricity market rules and application of nonlinear programming for overall optimization. The proposal presented includes economic dispatch and optimization of ASs, taking into account the compensation of reactive power, harmonics, and asymmetry.

60 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe the work currently being done in China to move toward better energy system integration, including certain institutional and regulatory changes, continental-scale grid connection, microgrids, and storage.
Abstract: To fulfill the Chinese government's targets for energy conservation and emission reductions, significant efforts to increase efficiency and reduce emissions in the energy system have been made by developing combined heat and power plants, expanding transmission, and incorporating renewables. These elements are not always compatible with each other, however. Renewables in particular face difficulties being integrated into the energy system, and a significant portion of this generation is often curtailed, in particular generation from wind. This article describes the work currently being done in China to move toward better energy system integration, including certain institutional and regulatory changes, continental-scale grid connection, microgrids, and storage. Further opportunities for flexible interaction between electricity and heat along with carbon capture and storage and the potential for increased gas supply from shale resources are also discussed.

60 citations

Journal ArticleDOI
TL;DR: The effective levelized cost of energy (LCOE) (ELCOE) index is introduced as the core of the proposed design algorithm and it is shown that, for 0.1-100-MW PV power plants, the economical ratings of inverters range from 8 to 100 kW.
Abstract: This paper presents an algorithm for the economical design of a utility-scale photovoltaic (PV) power plant via compromising between the cost of energy and the availability of the plant. The algorithm inputs are the plant peak power and the price of inverters with respect to their power ratings. The outputs are the optimum inverter ratings and the interconnection topology of PV panels. This paper introduces the effective levelized cost of energy (LCOE) (ELCOE) index as the core of the proposed design algorithm. ELCOE is an improved index based on the conventional LCOE that includes the availability of a power plant in economical assessments. The conventional LCOE index determines centralized topology (e.g., 1-MW inverter for a 1-MW PV power plant) for minimizing the energy generation cost, whereas based on ELCOE, a multistring topology (e.g., a 1-MW PV plant consists of fifty 20-kW inverters) despite of higher investment cost becomes the economically winning topology. Given the price of commercially available PV inverters at present, the case studies in this paper show that, for 0.1-100-MW PV power plants, the economical ratings of inverters range from 8 to 100 kW. The recently installed PV power plants confirm the feasibility of the calculations based on the suggested algorithm.

60 citations

Proceedings ArticleDOI
20 Mar 2011
TL;DR: In this paper, the authors presented the design and analysis of both the active and reactive power control of a single-phase voltage source inverter (VSI) for grid-connected photovoltaic (PV) system.
Abstract: This paper presents the design and analysis of both the active and reactive power control of a single-phase voltage source inverter (VSI) for grid-connected photovoltaic (PV) system. The proposed method is based on vector control of power by decoupling control of the active and reactive current components to feed the active and reactive power to the grid. The aim of this research is to control power factor at grid, to improve overall efficiency of transferring power of PV to alternate current power conversion into the grid, and to decrease phase current distortion of VSI. In this work, mathematical model of system has presented in details. The results of simulations of PV system 1kW connected to grid 220V, 50 Hz using MATLAB/Simulink software are also discussed. Simulation results have shown that the grid input power factor is nearly unity, and the distorting of phase current of the proposed system has been reduced, causing the total harmonic distortion for various power conditions falls within 5%.

60 citations

Journal ArticleDOI
TL;DR: In this article, a hybrid cogeneration system composed by a cogenerative internal combustion engine, a photovoltaic plant, a boiler and a pump as turbine is investigated.

60 citations


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