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dc.contributor.authorAlyan Nezhadi, M.
dc.contributor.authorZare, Firuz
dc.contributor.authorHassanpour, H.
dc.date.accessioned2017-08-24T02:18:23Z
dc.date.available2017-08-24T02:18:23Z
dc.date.created2017-08-23T07:21:50Z
dc.date.issued2017
dc.identifier.citationAlyan Nezhadi, M. and Zare, F. and Hassanpour, H. 2017. Passive grid impedance estimation using several short-term low power signal injections.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/55373
dc.identifier.doi10.1109/ICSPIS.2016.7869883
dc.description.abstract

© 2016 IEEE. In this paper, a method is proposed for passive grid impedance estimation using several short-term low power signal injections. Impedance estimation is used in many applications such as designing filters and stable inverters. In impedance estimation techniques with signal injection, a voltage signal is applied to grid and the division of voltage to current signal in frequency domain is considered as the impedance. Accuracy of impedance estimation in noiseless systems is independent to energy of injected signal. But in noisy system, energy of injected signal must be sufficient for an accurate approximation. In this paper, our simulation error is additive white Gaussian noise which is considered as measurement noise. The injection signal is ideal impulse or short duration rectangular pulse. Energy of the rectangular pulse dependents to the peak amplitude and pulse width. In low voltage power grid systems (220v), the peak amplitude of injecting signal is limited up to 2kv. In addition, increasing the pulse width reduces the bandwidth of the signal. Accurate impedance estimation using signal injection can be done in frequencies with sufficient energy and therefore every rectangular pulse can estimate impedance in some frequencies. In this paper, a method for passive grid impedance estimation based on combination of several signal injections is proposed. The simulation results show that the proposed method can properly estimate grid impedance in a wide frequency range up to 10kHz.

dc.titlePassive grid impedance estimation using several short-term low power signal injections
dc.typeConference Paper
dcterms.source.titleProceedings - 2016 2nd International Conference of Signal Processing and Intelligent Systems, ICSPIS 2016
dcterms.source.seriesProceedings - 2016 2nd International Conference of Signal Processing and Intelligent Systems, ICSPIS 2016
dcterms.source.isbn9781509058204
curtin.departmentSchool of Electrical Engineering and Computing
curtin.accessStatusFulltext not available


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