Online Tracking of Thévenin Equivalent Parameters Using PMU Measurements

Abdelkader, Sobhy M.; Morrow, D. John

doi:10.1109/tpwrs.2011.2178868

Cited by 81 publications

(54 citation statements)

References 16 publications

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“…A basic triangulation method to correct the phase drift with three consecutive measurements is proposed in [14] which briefly discussed in the Appendix. Consider three measurement pairs at generator terminal are available as , and The 1, 2 and 3 subscripts are denoted to the first, second and third measurements, respectively.…”

Section: Problem Statement and Proposed Algorithmmentioning

confidence: 99%

“…The main problem is finding the value of . According to [14], if three consecutive phasor belong to a unique , then the determinant of the equation (1-A) should be zero and leads to a phasor triangle construction by , and vectors. (See (2-A), (3-A), and Fig.…”

Section: Problem Statement and Proposed Algorithmmentioning

confidence: 99%

“…7, it is assumed that the vector is not affected and the virtual vector is constructed such that it forms a triangle with two other ones. The equivalent phase drift of vector is equal to and can be obtained as: (14) The corresponding value of is obtained from first and second measurement pairs. In this step, the calculated phase drift is related to second measurement pairs.…”

Section: Problem Statement and Proposed Algorithmmentioning

confidence: 99%

“…Another one is indicated by "Ref. [14] method" is one that calculated from algorithm developed in [14] which simple triangulation method is used to correct the phase drift.…”

Section: A Load Disturbancementioning

confidence: 99%

“…The corrected phasors then is used for TE estimation from a generator terminal. In [14], three consecutive phasor measurements of generator voltage and current is used to correct the phase drift and TE estimation. In [15][16], recursive least square estimation technique is used to estimate the online for tracking the voltage stability from a load terminal.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Power System Thévenin Equivalent Estimation Based on Phasor Measurements

Osbouei

Karegar

2017

Scientia Iranica

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This paper presents a novel algorithm based on phasor measurements to online estimation of power system Thévenin Equivalent (TE) from a generator terminal. Three consecutive phasor measurements of generator terminal voltage and current are used to estimate the system TE. In a real network, system frequency deviation from its nominal value will produce some phase drift in consecutive phasors reported by Phasor Measurements Units (PMUs). To correct the phase drift and synchronizing the reported phasors to the same reference, an improved triangulation method is developed. The improved method uses a virtual vector in its structure. Using this vector alleviates the negative impacts of improper data resulting from noise or disturbances which make the simple triangulation method to be useless. The algorithm is tested on standard NE-39 network and is implemented in Shahid Beheshti University (SBU) protection laboratory to verify the results in a practical area. The obtained results show that the new method can efficiently estimate the in online mode in steady-state and transient conditions.

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Section: Problem Statement and Proposed Algorithmmentioning

confidence: 99%

Section: Problem Statement and Proposed Algorithmmentioning

confidence: 99%

Section: Problem Statement and Proposed Algorithmmentioning

confidence: 99%

“…Another one is indicated by "Ref. [14] method" is one that calculated from algorithm developed in [14] which simple triangulation method is used to correct the phase drift.…”

Section: A Load Disturbancementioning

confidence: 99%