Identification of Grid Impedance during Severe Faults

Title: Identification of Grid Impedance during Severe Faults
Creator: Betz, Robert Eric; Graungaard Taul, Mads
Relation: 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Proceedings of 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (Baltimore, MD 29 September - 03 October, 2019) p. 1076-1082
Publisher Link: http://dx.doi.org/10.1109/ECCE.2019.8911873
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Resource Type: conference paper
Date: 2019
Description: Grid-connected converters, when subject to grid fault conditions, should stay connected and support the network voltage via reactive power injection. The fulfilment of this requirement strongly depends on the dynamics and stability of the converter control system. It can be shown that local static instability, and the consequent local dynamic instability can be avoided if the grid impedance during the fault is known. This paper proposes a novel method to identify the grid impedance during the fault by using the grid fault disturbance as an identification pulse. The proposed identification method is implemented in a proof-of-concept detailed simulation model, and verified with experimental results.
Subject: converters; grid fault conditions; network; network voltage
Identifier: http://hdl.handle.net/1959.13/1460300
Identifier: uon:45921
Identifier: ISBN:9781728103952
Language: eng
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