Grid Codes require fault ride-through (FRT) capability of wind turbines. When grid faults occur in a...

 

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Grid Codes require fault ride-through (FRT) capability of wind turbines. When grid faults occur in a wind turbine grid connected system, and the fault conditions met the area of 1 and 2 as shown in Figure 4, analyse on what the system should react. Maximum L-L voltage UVUN ↑ 100% 90% 70% 45% 0% STI: Short Term Interruption No tripping 0150 No tripping 2 Possibly STI 700 STI Stepwise tripping by Safeguard II after 1.5 2.4s 3 resynchronisation before primary control rimary cont 1.500 Figure 4 Time in ms 3.000 [10 Marks] [C01, PO1, C4] L Grid Codes require fault ride-through (FRT) capability of wind turbines. When grid faults occur in a wind turbine grid connected system, and the fault conditions met the area of 1 and 2 as shown in Figure 4, analyse on what the system should react. Maximum L-L voltage UVUN ↑ 100% 90% 70% 45% 0% STI: Short Term Interruption No tripping 0150 No tripping 2 Possibly STI 700 STI Stepwise tripping by Safeguard II after 1.5 2.4s 3 resynchronisation before primary control rimary cont 1.500 Figure 4 Time in ms 3.000 [10 Marks] [C01, PO1, C4] L

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Explanation I Many grid codes in several countries require wind turbines to remain connected to supp... View the full answer