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System restoration (Clearing policy (Elia net scheiden van andere TSBs,…
System restoration
Clearing policy
Elia net scheiden van andere TSBs
Elia net scheiden van DNBs
Elia net scheiden van productie eenheden
Het 380 kV net scheiden van de onderliggende netten
Lokale clearing op alle DVs 380 kV
Clearing vanuit EMS op alle DVs 220 kV en 150 kV
Fuel logistics
Substations
Service centers
Company vehicles
Admin sites
Gas supply system
Substation Auxiliaries
Fix diesel generators
Fix batteries
48 V DC for signalisation (8h)
110 V DC for switching operations (4h)
Long 24h autonomy batteries 48 V and 110 V
Mobile batteries
Mobile diesel units
Staff mobilization
Coordination
Alerting system
Mobilization sites
Data com-munication minimum requirements
Supervision and Control (RTU / ICCP)
Telephone system
Teleprotections should operate
Restart objective
Restoration schemes
Synchronization
locations
equipment
procedures
Grid behaviour
Soft energization
reduce transformer residual flux (can be up to 80% of normal)
HV cables impact + compensation
Avoid activation of protections
Power plant behaviour
Black start capability
Full load rejection + islanding
Operation at minimum load to meet hot restarting times
Automatic reconnection after re-energization
signal related to power plant availability
Inverter based resources
RES
HVDC
Distribution grids
increase nr of stakeholders
New role for DSO
Reliance on remote generation control centers
Reliance of communication
Difficult to provide fault current
Load behaviour
High priority grid users
Other generator's auxiliaries
Nuclear and gas facilities
Hospitals
cold load pickup