Modelling and dynamic performance of inverter based generation in power system studies: an international questionnaire survey

Gustav Lammert,Sergio Martínez Villanueva,Florin-Emilian Ciausiu,Martin Braun,Koji Yamashita,Pouyan Pourbeik,Luis David Pabón Ospina,Herwig Renner

doi:10.1049/oap-cired.2017.0898

Abstract

Owing to the increasing penetration level of Inverter Based Generation (IBG) over the last years, there has been much effort on the development of IBG models for power system dynamic studies. Therefore, CIGRE and CIRED have established a joint working group CIGRE C4/C6.35/CIRED: ‘Modelling and dynamic performance of inverter based generation in power system transmission and distribution studies’ with the aim of collecting the present best practices in the industry on modelling of IBG for power system dynamic studies, with the focus on PhotoVoltaic (PV) systems. For this purpose, a questionnaire was developed and distributed to utilities and system operators around the world. This paper summarises some of the key findings and observations and identifies prevalent information about: (i) the type of IBG technology that is modelled (e.g. wind, PV etc.); (ii) the used IBG models (individual or aggregated models); and (iii) the type of the power system dynamic study performed. This survey supports utilities and system operators as well as research institutes and academia to benchmark their approach against the prevailing international industry practice.

Highlights

Nowadays, the electrical power system is undergoing fundamental changes due to the ever increasing penetration of Inverter Based Generation (IBG)
Studies are required that analyse the impact of high penetration levels of IBG on the dynamic performance of the system
It can be seen that the application of individual models for IBG is slightly higher than the application of aggregated models, and reaches 59% in average, as indicated in the last row of the figure

Summary

Introduction

The electrical power system is undergoing fundamental changes due to the ever increasing penetration of Inverter Based Generation (IBG). The dynamic characteristic of IBG, such as wind or PhotoVoltaic (PV) generation, is fundamentally different from the conventional synchronous generators, and the dynamic performance of the system following disturbances might change due to the increasing impact of IBG. Studies are required that analyse the impact of high penetration levels of IBG on the dynamic performance of the system. In this context, the selection of the IBG model type is crucial for the analysis. Since all models have limitations, the selection of the model type is crucial based on the objectives of the study

Objectives

Methods

Results

Conclusion