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Handling of unbalanced faults in HVDC-connected wind power plants
(2017-11)
Article.
Accés obert
Article.
Accés obert
High-voltage DC (HVDC) connections enable integration of wind power plants located very far from shore. The decoupled AC offshore grid comprises multiple WT converters, and the voltage magnitude and frequency is primarily ...
Optimal dc voltage and current control of an lcc hvdc system to improve real-time frequency regulation in rectifier-and inverter-side grids
(2020-11-01)
Article.
Accés obert
Article.
Accés obert
High-voltage direct-current (HVDC) systems for constant or intermittent power delivery have recently been developed further to support grid frequency regulation (GFR). This paper proposes a new control strategy for a ...
A review of deterministic and data-driven methods to quantify energy efficiency savings and to predict retrofitting scenarios in buildings
(2020-10)
Article.
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Article.
Accés obert
Increasing the energy efficiency of the built environment has become a priority worldwide and especially in Europe. Because of the relatively low turnover rate of the existing built environment, energy efficiency retrofitting ...
Thermal modeling of large electrolytic capacitors using FEM and considering the internal geometry
(Institute of Electrical and Electronics Engineers (IEEE), 2021-06-16)
Article.
Accés obert
Article.
Accés obert
This article focuses on developing a finite-element method (FEM) model for large capacitors’ thermal modeling and reliability analysis. Thermal modeling for capacitors is critical since the capacitor’s lifetime depends on ...
Impedance-based modelling of Hybrid AC/DC grids with synchronous generator for interaction study and dynamic improvement
(2020-02-01)
Article.
Accés obert
Article.
Accés obert
Hybrid AC/DC grids are increasingly been seen as the most important network structure for future transmission infrastructures. An emerging challenge to such grids is the constant interaction between various components in ...
Technical and economic comparison of various electrical collection grid configurations for large photovoltaic power plants
(2017-02-22)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
In this study, a technical and economic comparative analysis for evaluating the performance of various electrical photovoltaic (PV) plant configurations is presented. This methodology assessment is based on a holistic ...
Power plant control in large-scale photovoltaic plants: Design, implementation and validation in a 9.4 MW photovoltaic plant
(2016-01-01)
Article.
Accés obert
Article.
Accés obert
© The Institution of Engineering and Technology 2016.
This study proposes an algorithm for active and reactive power management in large photovoltaic (PV) power plants. The algorithm is designed in order to fulfil the ...
Impact of operation strategies of large scale battery systems on distribution grid planning in Germany
(2017-07-01)
Article.
Accés obert
Article.
Accés obert
Due to the increasing penetration of fluctuating distributed generation electrical grids require reinforcement, in order to secure a grid operation in accordance with given technical specifications. This grid reinforcement ...
Impedance-based analysis of harmonic instabilities in HVDC-connected Offshore Wind Power Plants
(2019-03-01)
Article.
Accés obert
Article.
Accés obert
HVDC-connected Offshore Wind Power Plants (OWPPs) with a large number of power converters are prone to instabilities due to interactions with converter controllers. This paper analyzes harmonic instabilities in OWPPs ...
Series interline DC/DC current flow controller for meshed HVDC grids
(2017-07-30)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
This paper proposes a DC/DC Current Flow Controller (CFC) for meshed High Voltage Direct Current (HVDC) grids. The CFC has the advantage of a simplified structure that allows to use minimum number of switches when ...