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| Content Provider | IET Digital Library |
|---|---|
| Author | Asadpourahmadchali, Mohammadbagher Niasati, Mohsen Beromi, Yousef Alinejad |
| Abstract | An essential requirement to improve the lightning performance of transmission line is the achievement of low impulse impedance of grounding system, which diminishes the occurrence of the external overvoltages. In this study, for the first time, a multi-cross structure used as transmission line tower-footing grounding system is investigated by means of hybrid continuous circuit-trapezoidal integration method (HCCTIM). It is discovered that the angle of minimum impulse impedance or the optimal structure of multi-cross grounding system is mainly dependent on the branch length compared to the effective length of a single horizontal conductor. Furthermore, in the current work, the trapezoidal integration method is used to solve the continuous circuit equations which elements are extracted from electromagnetic integral method, called HCCTIM. Coupling elements and soil ionisation are considered in this model. This method is an accurate, simple, and less time-consuming computational method. The comparison of the results with measurements, other recent simulations and CDEGS software, satisfactorily validate the proposed method. |
| Starting Page | 292 |
| Ending Page | 302 |
| Page Count | 11 |
| ISSN | 17518822 |
| Volume Number | 14 |
| e-ISSN | 17518830 |
| Issue Number | Issue 3, May (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-smt/14/3 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2019.0050 |
| Journal | IET Science, Measurement & Technology |
| Publisher Date | 2019-10-23 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Branch Length CDEGS Software Connector Continuous Circuit Equation Earthing Effective Length Electromagnetic Integral Method External Overvoltages HCCTIM Hybrid Continuous Circuit-trapezoidal Integration Method Analysis Insulator Lightning Performance Lightning Protection Low Impulse Impedance Minimum Impulse Impedance Multicross Grounding System Multicross Structure Optimal Structure Overhead Power Line Poles And Towers Power Line Supports Power Overhead Line Power System Protection Power Transmission Protection Soil Soil Ionisation Time-consuming Computational Method Transmission Line Tower-footing Grounding System |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering |
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