Analysis of the commutation failure of inverters during open-conductor faults at the AC side
| Autor: | Chao Wang, Yinglin Xue, Minyuan Guan, Jingzhou Cheng |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
business.industry Direct current Electrical engineering Energy Engineering and Power Technology law.invention Electric power system Electric power transmission law Modeling and Simulation Inverter Constant current Commutation Electrical and Electronic Engineering business Alternating current Transformer |
| Zdroj: | International Transactions on Electrical Energy Systems. 25:1570-1589 |
| ISSN: | 2050-7038 |
| DOI: | 10.1002/etep.1919 |
| Popis: | Summary Commutation failures (CFs) in inverter stations disturb the power system greatly. Open-conductor fault (OCF) is a longitudinal fault. When it occurs in the alternating current (AC) system, the three-phase voltages are unbalanced. Under this circumstance, it is generally considered that inverters can maintain normal commutation order for the voltage support provided by other transmission lines in normal operation. In this paper, the possibility of the inverter CF during OCF is established. The sensitivities of the CF to the AC voltage disturbances caused by the changes of the AC superposition voltage are analyzed. It is concluded that the sensitivities of the CF with different transformer wiring schemes and fault types are diverse. Before the CF happens in the inverter station during OCF, the CF may occur in other inverter stations of the multi-terminal direct current systems with the constant current and constant extinction angle control strategies. Simulation studies are performed in the PSCAD/EMTDC software (Copyright(C)2006, Manitoba HVDC Research Centre, Canada), and the theoretical analysis is validated by the simulation results. Copyright © 2014 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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