Merkebu Zenebe Degefa
Merkebu Zenebe Degefa
Publikasjoner og ansvarsområder
An integrated pan-European research infrastructure for validating smart grid systems
A driving force for the realization of a sustainable energy supply in Europe is the integration of distributed, renewable energy resources. Due to their dynamic and stochastic generation behaviour, utilities and network operators are confronted with a more complex operation of the underlying distrib...
Data-driven Household Load Flexibility Modelling: Shiftable Atomic Load
To keep a stable power system, there should always be balance between the generation and consumption of electricity. In this study, a flexibility modelling method for atomic loads which is based on high resolution appliance measurement data is presented. The method embraces the potential variabiliti...
Design of experiments aided holistic testing of cyber-physical energy systems
The complex and often safety-critical nature of cyber-physical energy systems makes validation a key challenge in facilitating the energy transition, especially when it comes to the testing on system level. Reliable and reproducible validation experiments can be guided by the concept of design of ex...
Flexibility offered to the distribution grid from households with a photovoltaic panel on their roof: Results and experiences from several pilots in a Norwegian research project
The objective of this study is to evaluate how PV-oriented prosumers can offer flexibility to the Distribution System Operator (DSO). The different cases focus on the customer and changes on the customer side that will benefit both the customer and the distribution grid. (Actual tests of services de...
Deliverable 7.1 Report on the evaluation and validation of the ELECTRA WoC control concept
Probabilistic prosumer node modeling for estimating planning parameters in distribution networks with renewable energy sources
Characterization of flexibility resources and distribution networks
Post-primary voltage control using optimal power flow for loss minimization within web-of-cells concept
This paper presents the decentralized Post-Primary Voltage Control (PPVC) scheme which is introduced within the Web-of-Cells (WoC) concept in the ELECTRA IRP project. The PPVC improves the traditionally known secondary and tertiary voltage control schemes to develop a robust method coping with the e...
Power hardware-in-the-loop validation of post-primary voltage control scheme
The concept and experimental validation process of the Web-of-Cells (WoC) based Post-Primary Voltage Control (PPVC) developed in EU FP7 project ELECTRA IRP is presented in this paper. The main objective of PPVC is to provide an optimal and local voltage control replacing the conventional secondary a...