Fault Detection During Power Swing in a TCSC-Compensated Transmission Line Based on Clark’s Transform and Teager–Kaiser Energy Operator
Tóm tắt
Fault detection during power swing is a critical task as relays remain blocked leaving the system unprotected. Power swing in general is symmetrical, but asymmetrical power swing occurs during single-phase auto-reclosing operation. Both the power swings severely affect the fault detection schemes. Fault detection gets further complicated when transmission lines are compensated by thyristor-controlled series capacitor (TCSC). To protect the power network during power swing blocker operation under aforementioned circumstances, a sample-based technique using Clark’s transform and Teager–Kaiser energy operator is proposed. This technique is capable of detecting faults during symmetrical and asymmetrical power swings in transmission line with or without TCSC compensation. The proposed method has been validated by thorough mathematical analysis and simulation studies for various cases of fault during power swing.
Tài liệu tham khảo
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