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| Content Provider | IET Digital Library |
|---|---|
| Author | Tu, Youping Chen, Geng Wang, Cong Shao, Yuming Tong, Yujing Li, Chuanyang Ma, Guoming Shahsavarian, Tohid |
| Abstract | With the rise of renewable energy resources, especially offshore wind power plant, the DC transmission concept has attracted more and more attention. The selection of eco-friendly insulating gas, as most critical insulating part of gas-insulated equipment is top priority for developing highly reliable system. Moreover, it is acknowledged that eco-friendly C3F7CN/CO2 gas mixtures have become a potential alternative to SF6 gas due to its excellent performance. This study reviews the basic physical properties of C3F7CN gas/gas mixtures and insulation properties including the gas gap breakdown and surface flashover performance at DC, as well as lightning impulse voltage. Investigation about the gas stability is presented, including the compatibility of gas with solid materials in gas-insulated transmission line (GIL), and the decomposition characteristics under long-term electrical and thermal stresses. The important progress on the charge accumulation characteristics of gas–solid interface in the novel gas environment under DC voltage stress is analysed. Finally, the key issues that need to be paid attention to and further followed through regarding the application of this novel gas in GIL are summarised and put forward. This study hopefully can provide a complete reference for the development of eco-friendly DC gas insulation equipment with C3F7CN/CO2 gas mixtures. |
| Starting Page | 377 |
| Ending Page | 386 |
| Page Count | 10 |
| Volume Number | 5 |
| e-ISSN | 23977264 |
| Issue Number | Issue 4, Aug (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/hve/5/4 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/hve.2020.0083 |
| Journal | High Voltage |
| Publisher | The Institution of Engineering and Technology CEPRI |
| Publisher Date | 2020-05-28 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution-Non Commercial-No Derivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/) |
| Subject Keyword | C3F7CN-CO2 Carbon Compounds Charge Accumulation Characteristic DC Transmission DC Voltage Stress Decomposition Characteristic Dielectric Breakdown And Discharges Eco-friendly DC Gas Insulation Equipment Eco-friendly Insulating Gas Electrical Stresses Flashover Gas Environment Gas Gap Breakdown Gas Insulated Transmission Line Gas Mixtures Gas Stability Gas-insulated Equipment Gas-insulated Transmission Line Gas-solid Interface Gaseous Insulation Gaseous Insulation, Breakdown And Discharges High-voltage DC GIL Inorganic Insulation Insulation Property Lightning Impulse Voltage Offshore Wind Power Plant Power Transmission Cables Power Transmission Line Renewable Energy ReSource Review Surface Flashover Performance Thermal Stresses |
| Content Type | Text |
| Resource Type | Article |
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