Time-dependent power systems impedance-interpretation and measuring problems

Staroszczyk, Z.; Mikołajuk, K.

doi:10.1109/imtc.1999.776976

Cited by 12 publications

(2 citation statements)

References 8 publications

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“…Short‐time impulse excitation is useful for time varying system identification, as to certain extents, allows for finding local time‐dependent response of the time‐varying system. Periodical time variance of the power system, with the same state appearing each half fundamental period make the linear periodically time variant (LPTV) grid model relatively easy identified if phase shifted testing impulses are used .…”

Section: Smart Grids Impedance Determination Problems and Solutionsmentioning

confidence: 99%

Smart grids instrumentation-obtaining subgrid impedance information

Staroszczyk

2015

Int. Trans. Electr. Energ. Syst.

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Summary The paper deals with impedance measurements in smart grids. It presents the current state of the research in the field, with the information on methods and assured accuracy of grid impedance determination with the use of invasive methods. Associated problems and propositions for impedance observation infrastructure, which can be embedded in smart grid, are presented. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Smart Grids Impedance Determination Problems and Solutionsmentioning

confidence: 99%

Smart grids instrumentation-obtaining subgrid impedance information

Staroszczyk

2015

Int. Trans. Electr. Energ. Syst.

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“…The Thevenin equivalent circuits at fundamental and harmonic frequencies usually provide enough information regarding the effects of the changes in the power electronic device operating conditions on the supply voltage waveform [7]. Moreover real time monitoring of the harmonic impedances of the system can provide significant improvements to the design and operation of active filters [8] [9].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Harmonic Impedances of Supply Systems Using Natural Disturbances

Jia

2011

AMR

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This paper presents a novel and practical method for monitoring harmonic impedances of power systems seen at load serving substations. The method uses the natural load fluctuations measured at the substation for impedance estimation. It avoids the needs for intrusive disturbances and can be used for online tracking of impedance parameters. The method has been verified through several real field measurements.

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