Calculation of Ion Flow Fields of HVdc Transmission Lines Based on Error Minimization Using Nodal Current Density

Kim, Jin-Hyeok; Chung, Young-Seek; Kwon, Gu Min; Shin, Koo Yong; Jung, Hyun–Kyo

doi:10.1109/tmag.2019.2906847

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…This section explains an integral-based method for calculating the space-charge-free field. More detailed formulation is presented in [22].…”

Section: Appendix -Methods Of Moment Formulationmentioning

confidence: 99%

“…Moreover, an enforced Dirichlet boundary condition for the potentials on the outermost boundary, which is not zero in practice, can cause the backpropagation of the error within the region. In order to overcome the difficulties regarding the numerical differentiation, the numerical methods using the integral form of the current continuity equation have been proposed [19]- [22].…”

Section: Introductionmentioning

confidence: 99%

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Improved Flux Tracing Method Based on Parametric Curve for Calculating Ion Flow Field of HVDC Transmission Lines

2021

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An improved method for tracing electric flux lines in the vicinity of the overhead high voltage direct current (HVDC) transmission lines is developed by using parametric curves. Based on the geometric relation between the electric field vector and the derivative of the parametric curve function, the electric flux lines can be successfully traced without accumulation of the numerical error caused by the differentiation for calculating the electric potential. Considering the structural characteristics of the transmission line, the control points at both ends of the parametric curve can be easily located, and the remaining control points are modified to minimize an error function defined by the electric field vectors at nodes along the curve. Once the electric flux lines are traced, a series of flux tubes is created by bundling adjacent flux lines, and the nodal electric field vectors and space charge densities are iteratively updated. In order to consider the ionized space charge effect, new flux lines of modified electric field are traced, which in turn affects the existing space charge distribution. The process is repeated until the effect of the space charge is fully considered. The performance of the proposed algorithm is verified by comparing the resulting ground profiles of the ion flow field distribution with the result of the analytical model and the long-term measurement of the full-scale transmission line. INDEX TERMSCorona discharge, flux tracing method, HVDC transmission, ion flow field, space charge This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.

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“…This section explains an integral-based method for calculating the space-charge-free field. More detailed formulation is presented in [22].…”

Section: Appendix -Methods Of Moment Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved Flux Tracing Method Based on Parametric Curve for Calculating Ion Flow Field of HVDC Transmission Lines

2021

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Finite-time suspension control based on GFTSM and RBFNN for low-wind-speed MVAWT

Qiu

Chu

Chen

et al. 2023

Control Engineering Practice

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Safety Production Detection Algorithm of Smart Factory Based on PC Control Technology

Gan

Chen

2023

Journal of Testing and Evaluation

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In order to obtain the best scheme of safety production and operation decision-making of a smart factory and improve the rapid response ability of product information of a smart factory, the safety production detection algorithm of a smart factory is designed by using programmable computer (PC) control technology. The main interface, login interface, function interface, and navigation interface are designed, respectively, to realize the front-end design of the smart factory safety production detection platform. Based on PC control technology, the hardware equipment of perception layer, network layer, and application layer are installed, and on this basis, the database of the smart factory safety production detection platform is established. Once the operation data information is collected and detected, it is stored to the equipment fault experience knowledge base, and the fault diagnosis method of the minimum cut set of the fault tree is used to implement the on-site equipment diagnosis of the underlying Internet of Things of the smart factory, and finally the information sharing function of safety production detection through the information transmission of the safety production links of each smart factory is realized. Experiments show that the throughput data of the designed algorithm run stably, improve the control accuracy of safety production, and effectively improve the work efficiency.

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Calculation of Ion Flow Fields of HVdc Transmission Lines Based on Error Minimization Using Nodal Current Density

Cited by 3 publications

References 10 publications

Improved Flux Tracing Method Based on Parametric Curve for Calculating Ion Flow Field of HVDC Transmission Lines

Improved Flux Tracing Method Based on Parametric Curve for Calculating Ion Flow Field of HVDC Transmission Lines

Finite-time suspension control based on GFTSM and RBFNN for low-wind-speed MVAWT

Safety Production Detection Algorithm of Smart Factory Based on PC Control Technology

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