BINGMD
Electrical
- Jul 26, 2005
- 37
Transformer: 230kV(Yg)-115kV(Yg)-34.5kV (Delta with a zig-zag grounding transformer).
At 34.5kV side, there are two wind power generation feeders and a capacitor bank feeder. CT is 1200:5 C400.
Available 3 phase fault is about 8kA and 1LG fault is about 5kA.
Relay: SEL-387-5
Question: Is there any porblem to combine CTs of the two wind power generation feeders to one CT inputs of SEL-387-5, i.e., one restrain element? The CT burden is low and no satuaration is expected. Combining source feeders seems no problem.
Thank you for your response.
Regards,
Bing
At 34.5kV side, there are two wind power generation feeders and a capacitor bank feeder. CT is 1200:5 C400.
Available 3 phase fault is about 8kA and 1LG fault is about 5kA.
Relay: SEL-387-5
Question: Is there any porblem to combine CTs of the two wind power generation feeders to one CT inputs of SEL-387-5, i.e., one restrain element? The CT burden is low and no satuaration is expected. Combining source feeders seems no problem.
Thank you for your response.
Regards,
Bing