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Now showing items 1024-1042 of 1042
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Validating the ELECTRA Web-of-Cell control concept – An overview of possible simulation environment enhancements
(AIM, June 2018)It is expected that future power systems will be characterized by a high share of renewables. Nowadays, a shift from conventional dispatchable bulk generators to intermittent converter-coupled generation units can be ... -
Validation of Advanced Interoperability Functions for Battery Energy Storage Systems
(AIM, June 2018)Decentralized battery energy storage systems will play a key role for voltage and frequency grid control, especially in future cell-based power systems. It is crucial to validate new individual functions for the purpose ... -
Valuation of harnessing flexibility from decentralized water electrolysis systems for the DSO
(AIM, June 2019)A recent call for projects related to the development of new hydrogen applications and infrastructure in France has revealed renewed interests of city authorities and regions for water electrolysis technologies in order ... -
Value optimization of existing MV grids through a continuous cost benefit analysis
(AIM, June 2019)With regulation stimulating grid reliability, Liander (one of the Dutch DSOs) has always sought to reduce the number of component failures and to improve the outage restoration time. Traditionally, generic cost-benefit ... -
Value-added Electricity Services: Role of Microgrid Services In Distribution Network Planning
(AIM, June 2019)In an electricity system without much renewable energy resources (RESs), there is correlation between wholesale electricity prices and demand in such a manner when electricity price rise, demand is high. But, high share ... -
Variations of supraharmonic emissions in low voltage networks
(AIM, June 2019)This paper describes and presents measurements of supraharmonic emission in low voltage grids in Europe, North America and Asia. One-minute average values for 2 kHz grouped components are given and a total supraharmonic ... -
Vehicle-To-Grid Based Frequency Regulation Method In An Isolated Microgrid Considering Charging Requests Of Electric Vehicles
(AIM, June 2019)Electric vehicles (EVs) are capable of providing frequency regulation services through Vehicle-To-Grid (V2G). However, EV batteries are different from conventional energy storage systems in the sense that they are originally ... -
Verification of Off-Grid System for Remote Islands Using A Renewable Energy and Storage System
(AIM, June 2018)In this study, we inspected each generation capacity of photovoltaics power generation facilities (PVs), a battery energy storage system (BESS) and diesel engines (DEs) on a remote island. During the verification, because ... -
Verification of protective measures for safety of DC charging stations for electric vehicles
(AIM, June 2019)In order to ensure long-term protection against electric shock, a periodic verification of the protective measures for safety for DC charging stations for electric vehicles is essential. This paper provides a contribution ... -
Visions, Functions and Implementation of DSOs – A UK Perspective
(AIM, June 2018)This paper summarises the key aims and objectives of four major DSO projects in the UK, analysing their scopes, methodologies, and expected outcomes. The paper critics the alignment between the UK DSO projects and their ... -
Voltage Control in Distribution Feeders with High Solar PV Penetration: Case Study for Different Approaches.
(AIM, June 2019)Rising amount of distributed solar Photovoltaic (PV) power in distribution feeders is expected to impact the nodal voltage levels. This paper presents a case study of three different approaches – smart PV inverters with ... -
Voltage dip assessment in context of voltage quality regulation
(AIM, June 2019)Voltage events, namely voltage dips, are not as heavily regulated as continuity of supply, although they can have a similar economic impact on industrial customers as interruptions. Before setting limits of voltage dips ... -
Voltage management in the presence of Distributed Energy Resources - Field implementation of a robust Distribution State Estimator with errors in sensor data
(AIM, June 2019)The deployment of Distributed Energy Resources (DER) complicates voltage management on existing MV networks and requires dynamic centralized setting of On Load Tap Changer (OLTC) set point to optimize the network DER hosting ... -
Voltage regulation in stand-alone microgrids with storage units : a multi-variable H-infinity control approach
(AIM, June 2018)This study presents a scheme for voltage regulation in a diesel(PV)operating in standtheory, an robustly force the voltage magnitude of common coupling (PCC) specifications. where this controller is considered like an upper ... -
Voltage variation in MV distribution networks and its impact on selection of MV/LV transformation ratio
(AIM, June 2019)Regarding the nominal voltage change from 380 V to 400 V in LV networks and increasing the maximum voltage from 400 V to 420 V, the distribution utilities started to take a different approach to the MV/LV transformation ... -
Voltage-drop phenomenon and countermeasures in distribution grids with large amount of photovoltaic power generation
(AIM, June 2018)In Japan, rapid voltage drop and reduction in interconnection capacity due to degradation of system stability have occurred in long-distance distribution lines with large amounts of photovoltaic power generation (PV). ... -
Voltage-frequency Stability of a Low Inertia Electrical Grid using a Kuramoto Model
(AIM, June 2019)This paper investigates the voltage and phase dynamics of a low inertia inverter based Microgrid in islanded operation. In such case, the network is less robust to disturbances due to the lack of associated inertia within ... -
What should be done to make revolution in smart distribution grids?
(AIM, June 2019)The paper is highlighting the conclusions and the lessons learnt from EU FP7 demonstration project “Ideal grid for all, IDE4L” from Distribution System Operator’s viewpoint. Many technical demonstration projects of smart ... -
When to go for microgrids? Analysis of the main drivers in energy access context
(AIM, June 2018)Electricity access is currently limited in today’s developing countries. While efforts can be observed worldwide to move to a universal access, the question lies to determine what the best way is to ensure power supply to ...