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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tavakoli, A. Gholami, A. Parizad, A. Soheilipour, H.M. Nouri, H. |
| Copyright Year | 2009 |
| Description | Author affiliation: Esfahan Regional Electric, Company, Esfahan, Iran (Soheilipour, H.M.) || Center of Excellence for Power System Automation and Operation, Department of Electrical Engineering, Iran University of Science and Technology (IUST), Narmak 16846, Tehran, Iran (Tavakoli, A.; Gholami, A.; Parizad, A.) || Faculty of Engineering, University of the West of England (UWE), Frenchay Campus, Bristol, UK (Nouri, H.) |
| Abstract | According to reports that had been published in many papers, switching operation in gas insulated substation (GIS) lead to malfunction in the substation equipments. These improper functioning contain of malfunction electronic equipments and deformation of transformer winding and bushing failures. The reason of malfunction of electronic equipments is due to coupling voltages on data and control cables. The reasons of these problems are travelling waves which is generated during switching operations in a gas-insulated substation (GIS). To evaluate these cases, it must be performed an accuracy analysis on the wave shape and level of the very fast overvoltage (VFTO) and very fast transient currents (VFTC). In this paper the effective factors on the wave shape and level of the VFTC and VFTO is investigated and the beneficial approaches for the industry to finding the optimum approaches for VFT mitigation, is presented. These factors are included trapped charge, entrance capacitor, compensation resistor, hybrid compensation L and T types and variation of arrangement of switchgear. As variation of switchgear arrangement is included variation of lengths, branches (bypasses) and series capacitor (disconnectors opened). |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 573161 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424452309 |
| DOI | 10.1109/TD-ASIA.2009.5356953 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-10-26 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | switching Geographic Information Systems Substations Electronic equipment Shape very fast transient overvoltage (VFTO) Switchgear entrance capacitors Capacitors Windings compensation resistor switchgear arrangement Voltage control very fast transient currents (VFTC) hybrid compensation trapped charge gas insulated substation (GIS) Gas insulation Power transformer insulation |
| Content Type | Text |
| Resource Type | Article |
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