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Sustainability 2018, 10(5), 1605; https://doi.org/10.3390/su10051605

Impact of Asynchronous Renewable Generation Infeed on Grid Frequency: Analysis Based on Synchrophasor Measurements

1
Institute of Telecommunications, TU Wien, Gusshausstrasse 25, 1040 Vienna, Austria
2
Institute of Energy Systems and Electrical Drives, TU Wien, Gusshausstrasse 25, 1040 Vienna, Austria
*
Author to whom correspondence should be addressed.
Received: 16 April 2018 / Revised: 11 May 2018 / Accepted: 15 May 2018 / Published: 17 May 2018
(This article belongs to the Special Issue Power System and Sustainability)
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Abstract

The increasing power in-feed of Non-Synchronous Renewable Energy Sources (NS-RES) in the grid has raised concerns about the frequency stability. The volatile RES power output and absence of inertia in many types of NS-RES affect the balance between power consumption and production. Therefore, the dynamics of the power grid frequency become more complex. Extreme grid frequency deviations and fast variations can lead to partitioning and load shedding in the case of under-frequency. In the case of over-frequency, it can lead to overloading, voltage collapse and blackouts. The Rate of Change of Frequency (RoCoF) reflects an aspect of the stability status of the grid and therefore its analysis with regard to Non-Synchronous Instant Penetration (NSIP) is of great importance. In this work, two months of high-resolution frequency synchrophasor measurements during 18 January 2018–18 March 2018 recorded in Austria were analyzed to investigate the impact of NS-RES on the frequency. The correlation of RoCoF with the NSIP in Austria and Germany and with the frequency deviation were examined. It was observed that with a maximum NSIP share up to 74 % of the total power generation in these two countries, there was no critical increase of RoCoF or abnormal frequency deviation in the power grid. View Full-Text
Keywords: non-synchronous; renewable energy sources; frequency; rate of change of frequency; phasor measurement unit; inertia non-synchronous; renewable energy sources; frequency; rate of change of frequency; phasor measurement unit; inertia
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Xypolytou, E.; Gawlik, W.; Zseby, T.; Fabini, J. Impact of Asynchronous Renewable Generation Infeed on Grid Frequency: Analysis Based on Synchrophasor Measurements. Sustainability 2018, 10, 1605.

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