ERIGrid partners carry out a series of educational and training activities addressing young researchers, power system and ICT professionals and students:

WebinarsLaboratory exercisesPresentationsRemote lab monitoringPublications

PHIL simulation for DER and smart grids:

best practices and experiences from the ERIGrid project

On 5 December 2017 ERIGrid will be holding a webinar on power hardware in the loop (PHIL) simulation showcasing best practices and experiences in the project. This webinar will focus on the following topics:

Double PHIL configuration of the ICCS NTUA lab infrastructure

- Characteristics of PHIL simulation

- Stability, accuracy issues, interface topologies and stabilisation methods

- PHIL tests that show the value of the approach: DER inverters providing ancillary services, voltage-frequency control, microgrids, etc

- Improved Hardware in the Loop (HIL) methods in the ERIGrid project

- Live demonstration of HIL tests

 

Find out more and register here.

OpSim

OpSim is a test and simulation environment with applications ranging from developing prototype controllers to testing operative control software in the smart grid domain. Created by Fraunhofer IWES and University of Kassel, OpSim enables users to connect their software to simulated power systems, or test it in conjunction with other software. The power grid simulator of OpSim is capable of emulating large power systems with multiple voltage levels and substantial amounts of generators, storages and loads. The core of OpSim is a flexible message bus architecture; it allows arbitrary co-simulations in which power system simulators, controllers and operative control software can be coupled together.

ERIGrid held a webinar on OpSim on 27 June 2017, which covered the following topics:

- Introduction to the co-simulation platform OpSim using a message bus for exchanging data of different simulation tools
- Connection of a RTS (OPAL-RT) for real-time network simulation to the message bus
- Connection via web-based interfaces to the message bus for including several infrastructures in one experiment
- Demonstration of the OpSim platform

Further information about OpSim:
- website
- presentation

 

 

Laboratory exercises on important DG related topics are carried out using Power Hardware in the Loop (PHIL) simulation at the National Technical University of Athens. An experiential learning approach is applied starting from the concrete experiments and leading to abstract conceptualisation. The following topics are addressed:

1) Parallel operation of synchronous generators - parallel operation with DG

2) Voltage control of distribution networks - contribution of DG

3) Short circuit studies - contribution of power electronics interfaced DGs

4) Microgrid operation and control

 

All the materials used for lab exercises can be downloaded:

- Preparatory lecture (before the lab exercises)

- Description of the lab exercises in the journal paper "Laboratory Education of Modern Power Systems Using PHIL Simulation" P. Kotsampopoulos, V. Kleftakis, N. Hatziargyriou  

- Student reports (after the lab exercises):

Co-simulation for smart grids

The ERIGrid project explores the potential of co-simulation based on the Functional Mock-up Interface (FMI) standard for smart grids research. This presentation - "FMI – Functional Mock-up Interface. Specification and Applications." by E. Widl (AIT) - provides a brief overview of the FMI specification and some of the FMI-compliant tools used in ERIGrid.

The following two documents present the Mosaik co-simulation framework. The main goal of Mosaik is to couple existing simulators in a common environment in order to perform a coordinated simulation of a given (smart grid) scenario.

Mosaik introduction

Mosaik demo "The flexible smart grid co-simulation framework" F. Schlögl, O. Nannen, C. Steinbrink (OFFIS)

 

Holistic testing

The holistic test specification method was developed in ERIGrid to structure and guide the ERIGrid holistic validation approach. This test description method has been adopted into several H2020 projects. The lecture here is based on lectures held at a summer school and ordinary teaching at the Technical University of Denmark.

- The slides "How to Formulate a Test Specification" introduce the concept of holistic test specification, in principle, and by example, contrast it from use cases and summarise the related system configuration description method

- The document "ERIGrid Test Description Templates" provides core definitions and templates for the formulation a test

 

Photovoltaic systems

ERIGrid carries out performance analysis of islanded or grid-connected PV systems under varying operating conditions with the use of pure simulation models. The analysis includes models for PV panels, batteries, inverters and diesel gen-sets: "Autonomous and Grid-connected Photovoltaic Systems Modelling for Simulation Purposes" E. Rikos (CRES)

Following is an overview of the most common Maximum Power-Point Tracking algorithms used by commercial inverters' manufacturers or other research studies. The specific algorithms can be used in simulation analyses or design of inverter components: "Overview of methods for Maximum Power Point Tracking in PVs" E. Rikos (CRES)

This presentation demonstrates the use of power converters for the emulation of PV arrays as test setup components for the performance evaluation of PV inverters: "Overview of methods for HW Simulation for PVs" E. Rikos (CRES)

More ERIGrid Presentations