380 kV fail due to over voltage
The line VT rated 400KV for continuous charging. Line length is more than 300 km. The voltage in sending end was 409 kv and due to line capacitance the received end voltage was 420kv .
Because of over voltage the lie VT get damaged. The following protections are operated.
The line VT rated 400KV for continuous charging. Line length is more than 300 km. The voltage in sending end was 409 kv and due to line capacitance the received end voltage was 420kv .
Because of over voltage the lie VT get damaged. The following protections are operated.
RED670
1. Zone-1,2,3 start
2. Zcom -Trip
3. DEF start
4. Fuse fail
Micom 546
1. 21-2 SEND
2. 67N - SEND
3.21-2 RECV
4. 67N - RECV
