Woodward 505 Governor did not switch over during grid failure


Thread Starter

Amit Das

during grid failure our generator automatically was not switch over to frequency control mode to load control mode.

We unable to find the error of program in Woodward 505. If in any grid failure Tie failure is coming that time through governor. generator was not switch over to Frequency control mode to Load control mode. and resultant TG trip in any failure.

What are the correction require for automatic change frequency mode to load mode.

my Email ID: [email protected]
Dear Amit,

The normal phenomenon is when you are parallel with grid the unit will be operated in load control mode and whenever grid fails, the tie breaker signal to WWG will open causing unit to get islanded. The islanding means the unit will switch from load control mode to frequency control mode. Please inform the forum what was the status of mode of operation before and after grid failure correctly.
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