نتایج جستجو برای: grid generation
تعداد نتایج: 431844 فیلتر نتایج به سال:
Environmentally friendly renewable energy technologies such as wind and solar energy systems are among the fleet of new generating technologies driving the demand for distributed generation of electricity. Power Electronics has initiated the next technological revolution and enables the connection of distributed generation (DG) systems to the grid. The challenge is to achieve system functionali...
The use of overset grids in CFD started more than two decades ago, and has achieved tremendous success in handling complex geometries. In particular, overset grids have the advantage of avoiding grid remeshing when dealing with moving boundary flow problems. Traditionally overset grids were mainly used with structured grids to simplify the grid generation process, because a complex computationa...
Electricity consumption is often the hotspot of life cycle assessment (LCA) of products, industrial activities, or services. The objective of this paper is to provide a consistent, scientific, region-specific electricity-supply-based inventory of electricity generation technology for national and regional power grids. Marginal electricity generation technology is pivotal in assessing impacts re...
This paper presents a decentralized stochastic programming operation scheme for vehicle-to-grid system in smart grid, which includes series of equipment with random power generation and demands. For households electric devices, renewable solar generation, energy storage systems vehicles, we consider utility operating expenses, including loss consumption cost as the objective function. customers...
Increasing amounts of local power generation and loads are challenging the management of low voltage (LV) grids. This paper proposes a low voltage grid monitoring and control solution enabling a grid operator to: 1) assess available capacity in an LV grid for planning purposes, 2) provide grid constrained electrical vehicle (EV) charging control, and 3) optimize the injection of photovoltaic (P...
Nowadays there has been an increasing interest in transformerless inverter for grid-connected photovoltaic (PV) system due to low cost, high efficiency and light weight. One of the reasons describe the grid behavior is capability of reactive power control by inverter. According to the standard VDE-AR-N 4105, grid-tied PV inverter of power rating below 3.68KVA, should attain power factor (PF) fr...
Power system protection at transmission and distribution levels based on overcurrent relays is essential based on their properties such as detection, stability, high speed, backup and error correction accuracy. Since distributed generation sources are connected to the power grid, they not only increase the short circuit level of the grid, but also disrupt the set point of main and backup relays...
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