Browsing by Title
Now showing items 418-437 of 1042
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First results concerning localisation of earthfaults in compensated 20-kV-networks based on travelling waves
(AIM, 2019-06-03)Due to today´s increased demands on grid operation management, new methods for earth fault localization and detection are needed. The fault localisation should be performed as quickly as possible and under the condition, ... -
Flexibility and optimization services validation in a microgrid
(AIM, 2018-06-07)This paper describes how, within FLEXICIENCY project, flexibility and optimization services are being implemented and verified, with a special focus on two large scale demos, out of the five running in the project. It also ... -
Flexibility Determination of Distributed Energy Resources, Storage Systems and Heating Units considering Load and Feed-In Uncertainty
(AIM, 2019-06-03)With the transition from a load driven energy system towards an energy system based on renewable energy sources (RES) flexibility of distributed energy systems becomes an important issue. Since a high simultaneity of devices ... -
Flexibility for congestion management: An operational decision making process
(AIM, 2019-06-03)Network operators are investigating new methods to mitigate congestions. Utilising flexibility, for example through a flexibility market, is considered an affordable method, among others. This paper introduces a decision-making ... -
Flexibility for DSOs on a local scale: business models and associated regulatory questions raised in the InterFlex project
(AIM, 2018-06-07)The use of flexibilities for the needs of DSOs raises new questions.This article tackles some of the major issues regarding the use of flexibilities for the management of embedded microgrids or islanded electric systems. ... -
Flexibility Hub – Multi service framework for coordination of decentralised flexibilities
(AIM, 2019-06-03)EU-SysFlex H2020 project aims at developing and testing innovative tools for the integration of high levels (above 50%) of renewable energy sources (RES) in the pan-European Electricity system. These high levels of RES ... -
Flexibility model of integrated energy sources for the strategic planning of Distribution Networks
(AIM, 2018-06-07)The evolution of the European energy sector towards a decarbonized economy will provide a new impulse to the renewable energy exploitation. The expected strong impact on the power system can be positively faced only with ... -
Flexibility to DSO by VPP – Benefits, Regulatory Barriers, and Potential Solutions
(AIM, 2019-06-03)DSO, being responsible of the distribution grid, manages the network and distribution substations through its DMS (Distribution Management System) and SCADA HMI. DSO has to resolve local issues and network constraints on ... -
Forecast of steady-state voltage problems considering simulation and socio-environmental information
(AIM, 2019-06-03)This article presents the general panorama of the use of multiple sources of information to identify consumers who could receive voltage quality different from the appropriate. It is observed that only simulations of power ... -
Forecasted chronological Power Flow for enabling timely dynamic tariff activation
(AIM, 2019-06-03)The introduction of sensors and smart meters in power networks has leveraged the use of several other technologies with the aim of improving efficiency of grid operation and maximizing the benefit for all the stakeholders. ... -
Forecasting Method of LV Distribution’s Load CurveBy Means of Machine Learning Utilizing Smart Meter Data
(AIM, 2019-06-03)Maximum current is necessary to be estimated when designing a LV distribution grid, i.e. MV/LV pole-mounted transformers and LV feeders, which supplies customers of several in minimum and dozens in maximum. This is currently ... -
Forensic studies on 9 teardown power transformers - Correlation between DPv paper and 2-FAL and extrapolation to estimate the remaining useful lifetime of relative transformers in service
(AIM, 2019-06-03)This paper presents a study from EDP Distribuição and LABELEC, whose purpose was to develop a methodology to estimate the remaining useful lifetime (RUL) of 86 High Voltage (HV)/ Medium Voltage (MV) power transformers in ... -
Formal Modeling and Verification Method of Power Grid Cyber Physical System Based on Coupling of Information and Energy Flow
(AIM, 2019-06-03)This paper focuses on the coupling mechanism between power system information flow and energy flow. Based on the analysis of power grid cyber physical system (GCPS), a formal modeling and verification method is proposed. ... -
Frequency & ROCOF protections: toward a better evaluation of their rapidity
(AIM, 2019-06-03)The new standard IEC 60255-181define several tests to evaluate characteristics of the frequency and ROCOF protections. We argue that the computational speed of the protection is an important characteristic to consider, ... -
Frequency Response of a Real Cable Network and its Impact on Field PD Measurements
(AIM, 2019-06-03)Asset condition monitoring through Partial Discharge (PD) measurements is widely used for preemptive maintenance especially when it comes to cable networks. This is because the physical structure of the cable is a coaxial ... -
Frequency Response Test and Key Parameter Estimation of Oil-immersed Capacitive Voltage Transformer
(AIM, 2019-06-03)The increasing applications of CVTs can cause significant error in the harmonic voltage measurement. The correct measurement of the frequency response and the accurate parameter estimation are two main components for the ... -
Fully motorised cubicle leads to more safe, reliable and easy to use AIS switchgear.
(AIM, 2019-06-03)Full motorization of Air Insulated Switchgear inside primary Medium Voltage cubicle brings a lot of advantage in terms of safety and easiness of operation. It includes electrical operation of circuit breaker, racking device ... -
Function and Operation Plan for Stable Off-Grid Microgrid
(AIM, 2019-06-03)The interest in renewable energy sources and microgrid is increasing around the world, and the island grid based on the conventional diesel generator, is changed into off-grid microgrid using renewable energy resources. ... -
Functional Testing of Distribution Systems with High Penetration of Distributed Energy Resources
(AIM, 2019-06-03)The paper discusses the requirements for functional testing of the protection of distribution systems with high penetration of Distributed Energy Resources. Functional testing methods and how they can be used for the ... -
Fuzzy-logic based Autonomous Operation of Small-scale Microgrid in Emergency
(AIM, 2018-06-07)In this paper, an autonomous operation algorithm of small-scale MG in emergency based on a fuzzy logic is proposed. The proposed algorithm is implemented as an application program named EMC (emergency controller) for MG ...