Table 6 Comparison of power quality parameters of the two measured voltages (v1a and v2a).
Case study no | Experimental system state | Power quality parameters of the two measured voltages (v1a and v2a) | ||||
|---|---|---|---|---|---|---|
Magnitude | Frequency | Phase shift | Sine wave | Polarity | ||
Case 1 | Normal operation (Phase A) | √ | √ | √ | √ | √ |
Case 2 | Internal shunt fault (A11–B11) | x | x | x | √ | √ |
Case 3 | Internal shunt fault (A11–C11) | x | x | x | √ | √ |
Case 4 | Internal shunt fault (A12–B12) | x | x | x | √ | √ |
Case 5 | Internal shunt fault (A12–C12) | x | x | x | √ | √ |
Case 6 | Internal shunt fault (A13–B13) | x | x | x | √ | √ |
Case 7 | Internal shunt fault (A13–C13) | x | x | x | √ | √ |
Case 8 | Internal shunt fault (A14–B14) | x | x | x | √ | √ |
Case 9 | Internal shunt fault (A15–C15) | x | x | x | √ | √ |
Case 10 | Turn-to-turn fault (A1–A3)—Series fault | x | √ | √ | √ | √ |
Case 11 | Turn-to-turn fault (A1–A4)—Series fault | x | √ | √ | √ | √ |
Case 12 | Turn-to-turn fault (A1–A5)—Series fault | x | √ | √ | √ | √ |
Case 13 | Turn-to-turn fault (A1–A7)—Series fault | x | √ | √ | √ | √ |
Case 14 | External shunt fault (A5–B5) | √ | √ | √ | √ | √ |
Case 15 | External shunt fault (A6–B6) | √ | √ | √ | √ | √ |
Case 16 | External shunt fault (A7–B7) | √ | √ | √ | √ | √ |
