QUINPORTION – Measurement and quantification of inertia on electrical power systems to support integration of renewables

• Research unit: METAS
• Project number: F-5213.30167

Key words (German)

- Energiewende
- Wechselrichter 
- Phasor Measurement Units 
- höhere Harmonische

Key words (English)

inertia, renewables integration, synchrophasor measurements, real-time simulation, accuracy, monitoring system

Short description (German)

Verteilte Energieressourcen und Speicher, die über Wechselrichter an das elektrische Energiesystem angeschlossen sind, verursachen höhere Harmonische und führen zu Messstörungen. Traditionelle Sinusmodelle der Leistungssignale, die in der Praxis für alle Berechnungen verwendet werden, sind strenggenommen nicht mehr gültig. Dieses Phänomen erfordert neue Messverfahren und die Entwicklung von Instrumenten mit höherer Präzision. Aus diesem Grund wird im Rahmen dieses Projekts ein neuer PMU-Prototyp entwickelt, der gegenüber harmonischen Verzerrungen unempfindlicher ist und mit Amplituden- und Phasenschwankungen besser umgehen kann. Darüber hinaus werden Methoden zur Messung/Schätzung und Quantifizierung der bestehenden Trägheit des Systems entwickelt. Schliesslich wird die Machbarkeit und Zuverlässigkeit der vorgeschlagenen Ansätze durch Labortests und Hardware-in-the-Loop-Realisierung untersucht.

Short description (English)

Distributed energy resources and storage systems, which are connected with the power system via dedicated power inverters, are introducing measuring disruptions and consequently the traditional sinusoidal models used to compute the power signal are not valid anymore. This phenomenon calls for new measurement procedures and development of instruments with more precision. For this reason, a novel PMU prototype more resilient with respect to harmonic distortion capable to cope with amplitude and phase fluctuations will be developed on this project. Moreover, definition of methods to measure and quantify the existing among of inertia on the system will be derived. Finally, demonstration of the feasibility and reliability of the proposed approaches by means of laboratory testing and Hardware-in-the-Loop realization will be investigated

Project aims (German)

- Entwicklung eines PMU-Prototyp
- Entwicklung von Methoden zur Messung/Schätzung und Quantifizierung der bestehenden Trägheit des Systems
- Untersuchung der Machbarkeit und Zuverlässigkeit der vorgeschlagenen Ansätze

Project aims (English)

This research project has three main objectives:

• The development of a novel PMU prototype, more resilient with respect to harmonic distortion and capable to cope with amplitude and phase fluctuations. In this sense, the analysis will focus on the algorithmic routine for the accurate estimation of synchrophasor, frequency and ROCOF, but also on the implementation within a real industrial controller. In this way, it will be possible to evaluate the uncertainty contributions related to the synchronization unit or the voltage and current sensors.

 

• The definition of new inertia measurement methods that rely on PMU measurements and account for their inherent uncertainty. The outcome will consist not only of an inertia index but also of a confidence interval, which will improve the situational awareness and allow the system operator to take the most suitable control action.

 

• The demonstration of the feasibility and reliability of the proposed approach by means of laboratory functional test as well as Hardware-in-the-Loop realization of plausible operating conditions.