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Emergency & Restoration (E&R)

Principal objectives and contents 

Commission Regulation (EU) 2017/2196 establishing a network code on electricity emergency and restoration (NC ER) entered into force on 18 December 2017. The NC ER sets out harmonised rules concerning technical and organisational measures aimed at preventing the propagation or deterioration of an incident in a national system and avoiding the spread of any disturbances or blackout states to other systems. It also sets out harmonised procedures that transmission system operators should implement after the spread of a disturbance or blackout state in order to restore the alert or normal state.  

System defence plan for Austria

The national system defence plan based on the NC ER describes the measures to control critical system states and prevent major disturbances or limit their impact. These measures are vital for safe operation of the Austrian transmission grids operated by APG and VÜN in the Continental Europe (CE) synchronous area. They comprise instructions for all Austrian grid operators as well as for significant grid users, thus ensuring a high level of security of supply with electrical energy. Based on the system defence plan, there are various detailed requirements, methodologies and specifications, for example with regard to data provision. 

The system defence plan is available to download here

Reviewing the schemes included in the system defence plan 

As part of their responsibility for the system, each transmission system operator is responsible for reviewing the system protection schemes included in the system defence plan for its synchronous area. Accordingly, they must carry out compliance testing and periodic review of their system defence plans as specified in Article 50 of the NC ER. 

Datenbereitstellung für das Monitoring der UFLA

Für das Monitoring sind nach Ankündigung durch den Übertragungsnetzbetreiber Jahreszeitreihen sowohl für die Gesamtlast als auch für die kumulierte aktivierte Auslöseleistung in 60-min-Auflösung sowie die genaue Ausprägung der Lastabwurfstufen durch den Verteilernetzbetreiber bereitzustellen. 

Data provision for automatic low frequency demand disconnection monitoring 

As announced by the transmission system operator, the distribution system operator must for monitoring purposes provide annual structural data indicating the total load and the cumulative activated frequency restoration reserves (FRR) at 60-minute intervals as well as precise information on the stages of demand disconnection.  

Monitoring the system behaviour of power plants 

Current basic data on power plants’ frequency and voltage parameters and settings is provided together with the annual update to the communication describing the automatic low frequency demand disconnection scheme. Each distribution system operator reports the data for the power plants connected to its system to the upstream grid operator. The operators of the power plants must provide the relevant power plant data to the responsible grid operator promptly upon request. 

Monitoring the implementation of the voltage deviation management procedure  

Once per year, the TSO also reviews the degree of implementation by the distribution system operators of the measures defined in the voltage deviation management procedure. Data on implementation of this procedure should normally be provided together with the data prepared for the annual update to the communication describing the frequency deviation management procedure. 

Ongoing consultations 

You can find all ongoing and completed consultations in our document hub

Approved requirements, terms and conditions and methodologies  

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