Optimization of Electric Field Distribution Along a 400-kV Composite Insulator

Archana, Ch.; Usha, K.

doi:10.1007/978-981-15-7241-8_21

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…Next, the radius of corona ring is varied (R c ) in steps and the electric eld at the three critical regions are analyzed. Similarly r c , H g , R g , r g , L g are varied in steps [11].…”

Section: Study Of Variation Of Electric Field In the Three Region Of ...mentioning

confidence: 99%

Design optimization of corona ring and grading ring for a 400kV Tension insulator

Archana¹,

Usha²

2022

Preprint

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The design of polymer insulator depends on the surface electric field gradient. Increased electric field distribution generates corona discharge and leads to breakdown. Corona discharge has become an important factor not only because of corona losses but also due to electromagnetic interferences. Hence proper design optimization is necessary while designing the corona ring and grading ring which is employed at the critical region of the insulator to reduce the corona discharge. In this paper, optimized ring designs are identified for a 400kV tension type insulator. Three phase tension insulator along with the tower model is selected and its electric field distribution is calculated using finite element analysis. A 3D model design is developed using FEM based software. Seven structure parameters of the corona and grading rings are varied and the electric field is calculated. The optimized ring design is then achieved using multi-objective genetic algorithm. The obtained corona ring and grading ring parameters are compared with the simulated values and the error is less than 3%. Hence the proposed methodology can be used for prediction of corona ring and grading ring design, as the electric field is below the critical value.

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“…Next, the radius of corona ring is varied (R c ) in steps and the electric eld at the three critical regions are analyzed. Similarly r c , H g , R g , r g , L g are varied in steps [11].…”

Section: Study Of Variation Of Electric Field In the Three Region Of ...mentioning

confidence: 99%

Design optimization of corona ring and grading ring for a 400kV Tension insulator

Archana¹,

Usha²

2022

Preprint

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Artificial intelligence-based surrogate model for computation of the electric field of high voltage transmission line ceramic insulator with corona ring

Alipour Bonab,

Sadeghi,

Yazdani-Asrami

2024

WJE

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Purpose The ionization of the air surrounding the phase conductor in high-voltage transmission lines results in a phenomenon known as the Corona effect. To avoid this, Corona rings are used to dampen the electric field imposed on the insulator. The purpose of this study is to present a fast and intelligent surrogate model for determination of the electric field imposed on the surface of a 120 kV composite insulator, in presence of the Corona ring. Design/methodology/approach Usually, the structural design parameters of the Corona ring are selected through an optimization procedure combined with some numerical simulations such as finite element method (FEM). These methods are slow and computationally expensive and thus, extremely reducing the speed of optimization problems. In this paper, a novel surrogate model was proposed that could calculate the maximum electric field imposed on a ceramic insulator in a 120 kV line. The surrogate model was created based on the different scenarios of height, radius and inner radius of the Corona ring, as the inputs of the model, while the maximum electric field on the body of the insulator was considered as the output. Findings The proposed model was based on artificial intelligence techniques that have high accuracy and low computational time. Three methods were used here to develop the AI-based surrogate model, namely, Cascade forward neural network (CFNN), support vector regression and K-nearest neighbors regression. The results indicated that the CFNN has the highest accuracy among these methods with 99.81% R-squared and only 0.045468 root mean squared error while the testing time is less than 10 ms. Originality/value To the best of the authors’ knowledge, for the first time, a surrogate method is proposed for the prediction of the maximum electric field imposed on the high voltage insulators in the presence Corona ring which is faster than any conventional finite element method.

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Design of Grading Structures in Insulators Having Octa Bundle Conductor

2024

2024 International Conference on Recent Advances in Electrical, Electronics, Ubiquitous Communication, and Computational Intell

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Optimization of Electric Field Distribution Along a 400-kV Composite Insulator

Cited by 3 publications

References 3 publications

Design optimization of corona ring and grading ring for a 400kV Tension insulator

Design optimization of corona ring and grading ring for a 400kV Tension insulator

Artificial intelligence-based surrogate model for computation of the electric field of high voltage transmission line ceramic insulator with corona ring

Design of Grading Structures in Insulators Having Octa Bundle Conductor

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