UHF sensors positioning on the power transformer tank to enhance the partial discharge localization accuracy

Jangjoo, Mohammad Amin; Allahbakhshi, Mehdi; Mirzaei, Hassan Reza

doi:10.1016/j.epsr.2023.109174

Cited by 11 publications

(11 citation statements)

References 21 publications

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Section: Tablementioning

confidence: 99%

“…The best positions of the four sensors on the tested transformer tank that is obtained by the method that is presented in [22]. 7 The best positions of the five sensors on the tested transformer tank that is obtained by the method that is presented in [22]. 8 The best positions of the six sensors on the tested transformer tank that is obtained by the method that is presented in [22].…”

Section: Tablementioning

confidence: 99%

“…7 The best positions of the five sensors on the tested transformer tank that is obtained by the method that is presented in [22]. 8 The best positions of the six sensors on the tested transformer tank that is obtained by the method that is presented in [22]. To evaluate the localization accuracy by the proposed method, this power transformer is modelled in CST microwave studio.…”

Section: Tablementioning

confidence: 99%

“…The shortest route method [13][14][15][16][17] and the hyperbolic method [18][19][20][21][22] are two methodologies that can locate the PD source inside the power transformers utilizing the UHF measurements. The accuracy of the shortest route method is inherently better than the hyperbolic method because in the shortest route method all components inside the tank such as windings, tap-changer, EMWs velocity inside different insulations, which affect the localization accuracy, are considered, while in the hyperbolic method, these components are not considered and the entire space inside the transformer tank is considered homogeneous.…”

Section: Introductionmentioning

confidence: 99%

“…But the described method is based on the hyperbolic curve characteristics. The main contribution of the present paper is to provide a new method based on mathematical relationships that is different from the presented method in [22] for determining the exact positions of the sensors on the…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Ultra‐high frequency sensors positioning on the power transformer to mitigate the negative effects on the partial discharge localization accuracy

Jangjoo,

Allahbakhshi,

Mirzaei

2024

IET Generation Trans & Dist

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This paper proposes a new method for improving the partial discharge (PD) localization accuracy by detecting the best places of ultra‐high frequency (UHF) sensors on the power transformer tank. In this way, firstly, the critical sites inside the power transformer that can produce PD are determined. Then the sensors’ positioning is done in such a way that if the PD happens at each point of these critical sites, the distance between the estimated PD location obtained by solving the time difference of arrival (TDOA) equations and the actual PD location is laid in an acceptable range. For this purpose, the TDOA equations are linearized around the critical PD coordinates as a matrix form A.X = B. The configuration of the sensor positions that minimizes the condition number of the matrix A is the best configuration. To evaluate the effectiveness of the proposed method, several simulations and evaluations are performed on a power transformer in the CST software. The obtained results and comparing them with the previous method and also conventional arbitrary sensors positioning confirm the effectiveness of this method.

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Section: Tablementioning

confidence: 99%