Transient performance of substation grounding system in Multi-layer soil
Also available in printed version
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Bachelor thesis |
| Language: | English |
| Published: |
Universiti Teknologi Malaysia
2025
|
| Subjects: | |
| Online Access: | https://utmik.utm.my/handle/123456789/47378 |
| Abstract | Abstract here |
| _version_ | 1854975128342888448 |
|---|---|
| author | Mohammad Shahrin Affendy Yaman |
| author2 | Zulkurnain Abdul Malek, supervisor |
| author_facet | Zulkurnain Abdul Malek, supervisor Mohammad Shahrin Affendy Yaman |
| author_sort | Mohammad Shahrin Affendy Yaman |
| description | Also available in printed version |
| format | Bachelor thesis |
| id | utm-123456789-47378 |
| institution | Universiti Teknologi Malaysia |
| language | English |
| publishDate | 2025 |
| publisher | Universiti Teknologi Malaysia |
| record_format | dspace |
| record_pdf | Abstract |
| spelling | utm-123456789-473782025-03-12T18:26:16Z Transient performance of substation grounding system in Multi-layer soil Mohammad Shahrin Affendy Yaman Zulkurnain Abdul Malek, supervisor Electrical engineering Also available in printed version Lightning transient characteristic of the grounding grid is fundamental for optimum performance of lightning protection of a substation. The safety and stability of the substation are of great significance to the smooth operation of the power system. In order to design an appropriate grounding system for such substation, it is important to study its transient characteristics because the high impulse current is significantly different compared to power frequency current due to an inductive effect on the system. The high induced voltage generated by the lightning current, such as the transient touch voltage and step voltage as well as the transient ground potential rise (GPR), may cause breakdown to the electronic equipment and maybe dangerous to a personnel working nearby. The transient performance of the grounding system is influenced by several parameters, hence, it is very important to determine these effects so as to give an efficient and safe grounding system. In this project, several parameters, namely, soil resistivity, lightning current amplitude, feed point, and the number of subgrid were considered. The study determines their relationship with the transient performance in terms of transient GPR, touch voltage and step voltage along with different soil profiles. The substation grounding grid and its framework model were developed and simulated using CDEGS software. The simulation results (GPR, touch voltage and step voltage) were presented as plots of peak or maximum values of the time-domain response. Results show that the maximum transient GPR, touch voltage, and step voltage increase as the soil resistivity and lightning current amplitude increase. The maximum transient GPR and step voltage are the highest at the corner of the grounding grid while the maximum touch voltage is the highest at the centre of the grounding grid. In addition, the maximum transient GPR and step voltage increase when the number of sub-grid decreases. In contrast, the maximum touch voltage slightly decreases as the number of sub-grid decreases. zulaihi UTM 54 p. Project Paper (Sarjana Muda Kejuruteraan (Elektrik)) - Universiti Teknologi Malaysia, 2019 2025-03-12T05:44:37Z 2025-03-12T05:44:37Z 2019 Bachelor thesis https://utmik.utm.my/handle/123456789/47378 vital:128463 valet-20190903-11125 ENG Closed Access UTM Complete Unpublished Completion application/pdf Universiti Teknologi Malaysia |
| spellingShingle | Electrical engineering Mohammad Shahrin Affendy Yaman Transient performance of substation grounding system in Multi-layer soil |
| thesis_level | Other |
| title | Transient performance of substation grounding system in Multi-layer soil |
| title_full | Transient performance of substation grounding system in Multi-layer soil |
| title_fullStr | Transient performance of substation grounding system in Multi-layer soil |
| title_full_unstemmed | Transient performance of substation grounding system in Multi-layer soil |
| title_short | Transient performance of substation grounding system in Multi-layer soil |
| title_sort | transient performance of substation grounding system in multi layer soil |
| topic | Electrical engineering |
| url | https://utmik.utm.my/handle/123456789/47378 |
| work_keys_str_mv | AT mohammadshahrinaffendyyaman transientperformanceofsubstationgroundingsysteminmultilayersoil |