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An experimental and analytical study on 15 specimens of lap splices embedded in nonconventional concrete without confining reinforcement was performed under direct tension. The experimental program involved two groups of straight‐ended and anchored‐ended bars; three different techniques were employed with different splice lengths. For straight‐ended bars, conventional lap splice was studied as a benchmark...
Power transmission systems with high proportion of motor loads may undergo voltage recovery problems in the event of a system contingency. After a disturbance, motors may stall and delay the voltage recovery process by consuming substantial amount of reactive power. It has been presented in this study that the inability of power systems to meet reactive power demand during such contingency conditions...
In this investigation, some strategies are presented for the optimized provision of reactive power by photovoltaic (PV) systems to perform voltage regulation in a low voltage distribution grid. The optimization is based on an optimal power flow algorithm that determines the minimum amount of reactive power needed for voltage regulation, also resulting in the minimization of losses in the network....
This investigation aims at providing recommendations to system operators on how to adequately integrate photovoltaic plants in the distribution network, whereas providing ancillary services to the upstream networks. The focus is laid on utilizing different optimization techniques to allow for effective and efficient stand alone and coordinated voltage regulation, while optimizing the reactive power...
This investigation aims at providing recommendations to distribution system operators on how to effectively integrate photovoltaic plants in the distribution network. The focus is laid on utilizing the sensitivity analysis to coordinate voltage control and optimize the total reactive power required. Furthermore novel strategies are introduced for an effective use of the reactive power capability of...
The generation of power by photovoltaic (PV) systems is constantly increasing in low-voltage (LV) distribution grids, in line with the European environmental targets. To cope with the effects on grid voltage profiles during high generation and low demand periods, new solutions need to be established. In the long term, these solutions should also aim to allow further more PV installed capacity, while...
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