Check LV supply is being provided in the WFPS and WFPS LV Supply: ____ 2 ESBN control rooms, as applicable ESBN LV Supply: ____ This step is carried out to minimise inrush current when transformer is re-energised WFPS puts the Grid Connected Transformer on load tap Automatic / Manual changer into manual mode and taps to Energisation Tap Position. Tap ____ 3 If it is not possible to close the After 15 minutes, ESBN requests permission from NCC 110 kV CB with Black Start and closes the 110 kV CB Shutdown ON, continue to the next step 110 kV CB: ____ The WFPS CB shall be inhibited from closing (if the CB closes and WFPS clears all protection alarms and attempts to close trips immediately, this is not 4 the WFPS Transformer MV CB considered “inhibited”) WFPS CB: ____ WFPS confirms the following with NCC: (Note. These are initial conditions for next step) 110 kV CB ____ ESBN 110 kV CB is CLOSED WFPS CB ____ WFPS Transformer MV CB is OPEN RCES status: ____ RCES is in the ON (REMOTE) position Black Start Shutdown is ON 5 ON / OFF Blue lamp is ON in WFPS control room ON / OFF Grid Connected Transformer on load tap changer is in manual mode Automatic / Manual Grid Connected Transformer is on Energisation Tap Position Tap ____ Blue Lamp Status: ____ WFPS puts the RCES into the OFF (LOCAL) position 6 110 kV CB: ____ WFPS CB: ____ WFPS confirms the following with NCC: (Note. These are initial conditions for next step) 110 kV CB ____ ESBN 110 kV CB is CLOSED WFPS CB ____ WFPS Transformer MV CB is OPEN RCES status: ____ RCES is in the OFF (LOCAL) position Black Start Shutdown is ON 7 ON / OFF Blue lamp is ON in WFPS control room ON / OFF Grid Connected Transformer on load tap changer is in manual mode Automatic / Manual Grid Connected Transformer is on Energisation Tap Position Tap ____
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 ____
WFPS-Black-Start-Shutdown-Test-Procedure.docx