On-line monitoring of winding deformation of power transformer

Xu, Defei; Huang, Jiang; Li, Y.M.

doi:10.1109/iseim.2001.973812

Cited by 16 publications

(11 citation statements)

References 2 publications

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“…There is a variety of methods to detect the winding deformation developed at home and abroad [2], divideding into non electric measurement such as vibration analysis method [3], ultrasonic method [4], divergent coefficient method and electrometric method such as short circuit impedance method [5]and frequency response analysis [6].…”

Section: Introductionmentioning

confidence: 99%

Simulation study on the frequency response curve of the winding in different kinds of failure

Liu¹,

Wang²,

Yang³

2016

Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)

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Abstract. The equivalent circuit model is established to reflect the physical characteristics of the inner winding of the transformer, and then the parameters of the equivalent circuit model are calculated by using the finite element simulation software Maxwell ANSYS. Based on the establishment of the transformer winding equivalent circuit model and the distribution of resistance, capacitance, inductance calculation results, the variation of the distribution parameters of different winding faults is obtained. Use circuit analysis software PSpice and data analysis software MATLAB to simulate and set up the deformation of different types and degrees of transformer winding, such as winding axis shift, winding radial deformation, change of pitch of winding. According to the variation of the distribution parameters, the variation of the frequency response curve of the transformer winding is obtained.

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Section: Introductionmentioning

confidence: 99%

Simulation study on the frequency response curve of the winding in different kinds of failure

Liu¹,

Wang²,

Yang³

2016

Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)

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“…Short circuit test method is needed to measure the short-circuit reactance. And it can be performed simultaneously with the operation of the transformer, but does not provide any information about the type and location of the fault [4]. Frequency response analysis method, although this method has been mentioned in the literatures as the on line mode [5], but only the high voltage side of the transformer in the circuit remains.…”

Section: Introductionmentioning

confidence: 99%

Exact determination of a winding disk radial deformation location considering tank effect using an analytical method

Rahbarimagham

Hejazi

Karami

et al. 2013

2013 21st Iranian Conference on Electrical Engineering (ICEE)

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Power transformers are one of the most expensive components of the power system. Timely detection of fault arose in the transformer can be used to prevent unwanted outage of transformer and repair costs. Using electromagnetic waves has recently been proposed for on-line monitoring of the transformer. The presence of the tank in the transformer structure causes problem for analyzing the electromagnetic waves. In this paper, a new analytical method based on locus of the objects in the space is proposed to detect the radial deformation location of a disk winding considering tank effect. The proposed experimental set-up for this method has been modeled using CST (Computer Simulation Technology) software. In this paper, Vivaldi antennas suitable for measurements in environments with multi-path routing are used and the analysis is performed in the time domain. The simulation results show that exact determination of radial deformation location can be detected with good accuracy using this method.

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“…The short circuit current can cause radial deformations and axial displacements of transformer windings. These mechanical damages may not lead to an immediate failure of the transformer, but the ability of the transformer to withstand future mechanical and dielectric stresses may be highly decreased [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Each method can be applied to a specific type of problem and has its own advantages and disadvantages [3,4]. In recent years, several off-line methods such as Short Circuit test (SC) [1], Low Voltage Impulse test (LVI) [5] and Frequency Response Analysis (FRA) [3] for the detection of the winding deformation have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Antennas positioning for on-line monitoring of transformer winding radial deformation using UWB sensors

Ebrahimi

Gharehpetian

Amindavar

et al. 2010

2010 IEEE International Conference on Power and Energy

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The application of Ultra-Wideband (UWB) sensors is a new method for on-line monitoring of transformer winding radial deformations. The measurements of received signals from a simplified model of the transformer winding demonstrate the high sensitivity of the proposed method to detect winding deformations. The proper position of transmitter and receiver antennas on the transformer tank is an important problem for the monitoring system. This problem has been studied in this paper.

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On-line monitoring of winding deformation of power transformer

Cited by 16 publications

References 2 publications

Simulation study on the frequency response curve of the winding in different kinds of failure

Simulation study on the frequency response curve of the winding in different kinds of failure

Exact determination of a winding disk radial deformation location considering tank effect using an analytical method

Antennas positioning for on-line monitoring of transformer winding radial deformation using UWB sensors

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