نتایج جستجو برای: power system oscillation

تعداد نتایج: 2609818  

2016
John Oladosu Abdrazak Olawoye

Impact of Active Distribution Network Cell (ADNC) Study on Power System Oscillation requires modelling of power system components. The system covers the well knows Two AreasSystem benchmark which studies low frequency electromechanical oscillations in large interconnected power system. This study examined the effect of passive cell on Active Distributive Network Cell (ADNC). The method adopted ...

2008
Chao Lu Jennie Si

In modern, large scale interconnected power grids, low-frequency oscillation is a key roadblock to improved power transmission capacity. Supplementary generator control, flexible AC transmission system (FACTS), and high voltage direct currents (HVDC) are engineered devices designed to damp such low frequency swings. In this paper a neural network-based approximate dynamic programming method, na...

Journal: :DEStech Transactions on Environment, Energy and Earth Sciences 2018

Journal: :Applied sciences 2022

It is vital to improve the stability of power system by accurately identifying modal parameters damped low-frequency oscillations (DLFO) and controlling oscillation in time. A new method based on empirical mode decomposition (EMD), stochastic subspace identification (SSI), Prony algorithms, called synthetical (SMPI) method, developed efficiently matching DLFO which are acquired from SSI algorit...

Journal: :IEEE Journal of Emerging and Selected Topics in Power Electronics 2021

The wideband oscillation of the hybrid modular multilevel converter (MMC)induced by excessive power infeed under weak ac system integration is analyzed in this article. A closed-loop state-space-based time-domain small-signal model firstly established to investigate instability problem. Different from findings two-level voltage-source-converters (VSCs) or half-bridge MMCs, root locus analysis a...

2007
J. GHAISARI

Abstract– After a disturbance occurrence, fast damping of power oscillations is essential to reduce the risk of instability and thus increase the power transfer capacity of transmission systems. Recently, the Static Series Synchronous Compensator (SSSC) has justified its ability to improve power oscillation damping. Due to substantial interactions among the SSSC damping control loops and the po...

Journal: مهندسی دریا 2010
Hamid Sarlak, Majid Abbaspour, Mohammad Saeed Seif,

The important characteristic of sea waves is their high energy density, which is the highest among renewable energy sources. Having up to 2700 km. of shoreline, Iran has a great potential in construction of offshore wave buoys (hereafter called OWB). In this article a OWB model with the possibility of assembling different buoy configurations is introduced. The system is exposed to regular and i...

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