Integrated protection based on multi-frequency domain information for UHV half-wavelength AC transmission line

Wang, Qingping; Bo, Zhiqian; Ma, Xikui; Zhang, Ming; Zhao, Yingke; Zhu, Yan; Wang, Lin

doi:10.1186/s41601-016-0027-8

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…Transmission line parameters are critical information for various power system applications including fault location and classification [1][2][3], relay protection [4][5][6], and other applications [7,8]. Thus, the accuracy of line parameters is important, and accurate line parameter estimation methods are demanded.…”

Section: Introductionmentioning

confidence: 99%

Kalman filter based method for tracking dynamic transmission line parameters

Zhang

Liao

2021

SN Appl. Sci.

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Transmission line parameters are required by various power system applications. Thus, it is important to develop accurate transmission line parameter estimation methods. This paper puts forward Kalman filter based methods to track the dynamically changing line parameters. The proposed methods can overcome the estimation inaccuracy problem caused by the effect of the noise in the measurements. The proposed methods are based upon the equivalent- circuit of long line and utilize voltage and current data recorded by the Phasor Measurement Units at both ends of the line. Non-compensated and differently configured series compensated lines have been considered in this paper. The case studies demonstrate that the proposed methods have the capability of dynamically tracking changing line parameters and yield accurate estimates with the presence of measurement noises.

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