System Restoration
- event System Separation In The Continental Europe Synchronous Area
- category System automatic defence actions
- contingency type Busbar coupler CB tripping
- primary cause Under investigation
- secondary causes Under investigation
- impacts No content
- mitigations No content
- number of customers affected No content
- epri research program P39: Transmission Operations
- epri research project 39.013 -System Restoration and Emergency Operations
- epri research deliverable Power System Restoration Reference Guide Restoration
description
System resynchronization:
- The busbar coupler 400kV in Ernestinovo (HR) was switched on at 15:07:25,
- Immediately after confirmation that the first step was successful, OHL 400 kV Novi Sad 3 (RS) – Subotica 3 (RS) was switched on at 15:08:20,
- Immediately after confirmation that the second step was successful, OHL 400 kV Konjsko (HR) – Velebit (HR) was switched on at 15:09:38,
- Transelectrica was informed that EMS, NOS BIH and HOPS had made reconnections, so the internal line connection in Transelectrica could be started,
- Transelectrica switched on OHL 400 kV Sibiu Sud – Mintia at 15:10, and afterward, OHLs 400 kV Iernut – Sibiu Sud & 400 kV Iernut – Gădălin at 15:12,
- HOPS and NOSBiH switched on other tripped lines:
- Transelectrica proceeded to reconnect the rest of the tripped lines and transformers:
- EMS and HOPS proceeded to reconnect the tripped 110 kV OHLs.