2 Check LV supply is being provided in the WFPS and ESBN control rooms, as applicable WFPS LV Supply: ____ ESBN LV Supply: ____ 3 WFPS puts the Grid Connected Transformer on load tap changer into manual mode and taps to Energisation Tap Position. After 15 minutes, ESBN requests permission from NCC and closes the 110 kV CB This step is carried out to minimise inrush current when transformer is re-energised Automatic / Manual Tap ____ If it is not possible to close the 110 kV CB with Black Start Shutdown ON, continue to the next step 110 kV CB: ____ 4 WFPS clears all protection alarms and attempts to close the WFPS Transformer MV CB The WFPS CB shall be inhibited from closing (if the CB closes and trips immediately, this is not considered “inhibited”) WFPS CB: ____ 5 WFPS confirms the following with NCC: (Note. These are initial conditions for next step) ESBN 110 kV CB is CLOSED WFPS Transformer MV CB is OPEN RCES is in the ON (REMOTE) position Black Start Shutdown is ON Blue lamp is ON in WFPS control room Grid Connected Transformer on load tap changer is in manual mode Grid Connected Transformer is on Energisation Tap Position 110 kV CB ____ WFPS CB ____ RCES status: ____ ON / OFF ON / OFF Automatic / Manual Tap ____ 6 WFPS puts the RCES into the OFF (LOCAL) position Blue Lamp Status: ____ 110 kV CB: ____ WFPS CB: ____ 7 WFPS confirms the following with NCC: (Note. These are initial conditions for next step) ESBN 110 kV CB is CLOSED WFPS Transformer MV CB is OPEN RCES is in the OFF (LOCAL) position Black Start Shutdown is ON Blue lamp is ON in WFPS control room Grid Connected Transformer on load tap changer is in manual mode Grid Connected Transformer is on Energisation Tap Position 110 kV CB ____ WFPS CB ____ RCES status: ____ ON / OFF ON / OFF Automatic / Manual Tap ____
8 WFPS clears all protection alarms and attempts to close the WFPS Transformer MV CB The WFPS CB shall be inhibited from closing (if the CB closes and trips immediately, it is not considered “inhibited”) WFPS CB: ____ Remove Black Start Shutdown Signal and return WFPS to Normal Operation The WFPS is returned to normal operation. NCC then issue a MW set-point to the WFPS to confirm this functionality has not been compromised by a loss of mains on site. Step No. Action Time Comments 1 WFPS confirms the following with NCC: (Note. These are initial conditions for next step) ESBN 110 kV CB is CLOSED WFPS Transformer MV CB is OPEN RCES is in the OFF (LOCAL) position Black Start Shutdown is ON Blue lamp is ON in WFPS control room Grid Connected Transformer on load tap changer is in manual mode Grid Connected Transformer is on Energisation Tap Position 110 kV CB ____ WFPS CB ____ RCES status: ____ ON / OFF ON / OFF Automatic / Manual Tap ____ 2 WFPS puts the RCES into the ON (REMOTE) position Blue Lamp Status: ____ 110 kV CB: ____ WFPS CB: ____ 3 WFPS requests NCC to remove the replaced the RCES signal in NCC 4 WFPS requests NCC to remove the Black Start Shutdown command Blue Lamp Status: ____ 5 ESBN requests permission from NCC and closes the 110 kV CB if it is not already closed 110 kV CB: ____ 6 WFPS closes the WFPS Transformer MV CB WFPS CB: ____ 7 WFPS puts the Grid Connected Transformer on load tap changer into automatic mode 8 WFPS requests permission from NCC and starts up all turbines MW output ramps at Wind Following Ramp Rate