Impulse characteristics of grounding devices considering soil ionization by the p-order time domain difference method

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-03-30 DOI:10.1016/j.epsr.2025.111658

Zhiqiang Feng , Yaodong Zhang , Xueming Zhou , Yao Yao , Hailiang Lu , Zijian Li , Li Zhang , Xiankang Wang

引用次数: 0

Abstract

Knowledge of the impulse characteristics of grounding devices is important for the lightning protection of power system. In this paper, the transient model in time domain of grounding grid is established by the electrical network theory. Then, the p-order differential algorithm is applied to solve electrical network model. To consider the soil ionization phenomenon, the soil discharge equivalent model is established and solved by iterative solution algorithm. The (3∼5)-order TDDM could eliminate partial zigzag oscillations of the response voltage calculated by the 1-order TDDM and improve calculation efficiency simultaneously. Finally, the full-scale experiments of typical grounding devices are carried out which verifies that the calculation errors are <5.14 %.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.