Aineistot 1-10 / 11
Design and Analysis of New Harbour Grid Models to Facilitate Multiple Scenarios of Battery Charging and Onshore Supply for Modern Vessels
The main objective of this study is to develop and analyse diﬀerent harbour grid conﬁgurations that can facilitate the charging of batteries for modern vessels and supply onshore power. The use of battery energy storage ...
Combined Islanding Detection Scheme Utilizing Active Network Management for Future Resilient Distribution Networks
(Institution of Engineering and Technology (IET), 2018-07-18)
Needed new cost-efficient, reliable, standardised and redundant solutions for future resilient smart grids must utilise possibilities of advanced ICT technologies (such as wireless fifth generation and cloud servers with ...
Controller development for reactive power flow management between DSO and TSO networks
(Institute of Electrical and Electronics Engineers (IEEE), 2019-11-21)
In the future, new solutions for active and reactive power control related to the flexibility services offered by distributed energy resources (DER) will be needed even more. One ancillary service which DER could provide ...
Testing an IEC 61850-based light-weighted controller for reactive power management in smart distribution grids
(Institute of Electrical and Electronics Engineers (IEEE), 2019-12-09)
Due to the large-scale integration of distributed energy resources (DER) new options for the local and system-wide technical ancillary services are needed. Reactive power control is one of such ancillary service provided ...
Modelling and simulation of hybrid PV & BES systems as flexible resources in smartgrids - Sundom smart grid case
Ever-growing energy needs and larger penetration of renewable energy in the power grids with higher intermittency in power generation cause the need for flexible energy sources. Flexible sources such as distributed generation, ...
Earth Fault Location Using Negative Sequence Currents
(Molecular Diversity Preservation International (MDPI), 2019-09-30)
In this paper, a new method for locating single-phase earth faults on non-effectively earthed medium voltage distribution networks is proposed. The method requires only current measurements and is based on the analysis of ...
Sizing and Allocation of Battery Energy Storage Systems in Åland Islands for Large-Scale Integration of Renewables and Electric Ferry Charging Stations
The stringent emission rules set by international maritime organisation and European Directives force ships and harbours to constrain their environmental pollution within certain targets and enable them to employ renewable ...
Principles of power management in a smart microgrid based on Std. IEC 61850
In recent years, the structure of the electrical power system has changed, and all aspects of power generation have shifted towards bidirectional and smart methodology. The Microgrid (MG) as a popular concept for the modern ...
Online condition monitoring of MV cable feeders using Rogowski coil sensors for PD measurements
Condition monitoring is a highly effective prognostic tool for incipient insulation degradation to avoid sudden failures of electrical components and to keep the power network in operation. Improved operational performance ...
Prospects and costs for reactive power control in Sundom smart grid
New options to provide the technical ancillary services locally and system-wide by distributed energy resources (DER) are needed in the future. Sundom Smart Grid (SSG), local smart grid pilot in Vaasa, offers a novel ...