A new design of substation grounding based on electrolytic cathodic protection and on transfer corrosion current
| Autor: | Haize Hu, Xiaofei Deng, Mengge Fang, Shuiling Zeng, Feiyu Hu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Electrolytic cell Ground 020209 energy 020208 electrical & electronic engineering Energy Engineering and Power Technology Mechanical engineering 02 engineering and technology Cathode Cathodic protection Corrosion law.invention Anode law Electrode 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Voltage |
| Zdroj: | Electric Power Systems Research. 195:107174 |
| ISSN: | 0378-7796 |
| DOI: | 10.1016/j.epsr.2021.107174 |
| Popis: | In this paper, zinc material is used as auxiliary anode grounding electrode and connected by flat steel to form grounding grid of electrolytic cell protection circuit, to prevent the main grounding grid from corrosion. At the same time, the paper designs to transfer the lead-down from the grounding grid to the auxiliary anode grounding grid, and to transfer the corrosion current to the auxiliary anode grounding grid. Several groups of zinc-iron electrodes were deeply buried in deep excavated soil outdoors to conduct simulated grounding grid protection tests. At the same time, the software simulation is carried out in the laboratory. Firstly, Rotating Disk Electrode (RDE) and Solartron electrochemical interface were used to compare the current-voltage curves of three cases (natural anode, passive cathode and active cathode), and the corrosion rates of the three cases were calculated. Secondly, ATP-EMTP simulation software is used to simulate the point voltage and current of the auxiliary anode grounding grid before and after the design of the transfer corrosion current. The simulation results show that passive electrolytic cathode has better corrosion protection. The auxiliary anode grounding grid design and the transfer corrosion current design can better prevent the main grounding grid from corrosion. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect