Ingen bildrubrik

1
Blackout in Italy2003-09-28
Sture Lindahl 2003-10-10 Industrial Electrical
Engineering and Automation sture.lindahl_at_iea.lth.s
e
2
Introduction

• Blackout on 2003-09-28 at 0328
• Affected all Italy except
• New world record 58 million persons
• No expansion of nuclear power according to
  referendum
• Yearly electric energy import 17
• Power import 6 400 MW

3
Background

• Italy lost all transmission lines from France,
  Switzerland, Austria and Slovenia
• The blame game started
• RTE has requested UCTE to carry out a disturbance
  investigation
• UCTE will report on 2003-10-20

4
First Event

• At 0301, sustained outage of the 400 kV Metten
  Lavorgo (in Switzerland)
• At 0315, ETRANS called GRTN and requested a
  reduction of the physical power flow to Italy
• The import was reduced by 200 MW down to the
  agreed 6 400 MW

5
Fax Information from Switzerland
6
Second Event

• At 0325 the 400 kV Sils-Soasa (in Switzerland)
  tripped and the reason has not been published

7
Fax Information from Switzerland
8
Affected Region
9
Restoration

• At 0345, restoration co-operation started
• At 1300, the transmission lines to Italy were
  restored
• At that time Italy imported about 85 of the
  value planned before the blackout
• At 1545, significant parts of Italy was not
  supplied
• At 2000 most of the load was restored