What happened to Portugal's black start capacity?

Faced with this situation, Portugal initially resorted to its black start capacity (starting up power stations autonomously from a total power outage) at the Tapada do Outeiro gas-fired power station, which allowed power to be restored very carefully in areas of Greater Porto.

What causes a communication base station to fail?

Power interruption is a significant contributor to communication base station functional failure. Communication systems closely rely on power systems, and power outages can result in widespread station interruptions. In the case of the earthquake in Changning County, 90% of disrupted base stations experienced power interruptions as the cause .

Do communication base stations perform post-earthquake functionality using Bayesian network?

A method to evaluate the post-earthquake functionality of communication base stations using Bayesian network is developed. The dependence between the equipment and its hosting building structure, and the impact of power outages are considered. The method is validated using seismic damage data from the Ludian Earthquake.

What causes base station functional failure?

In Fig. 6, the causes of base station functional failure (T) are identified: power interruption (I 1), damage to communication room (I 2) (equipment included), and damage to communication towers (I 3).

Why do base stations need a transformation process?

Therefore, this transformation process provides a more accurate assessment of the post-earthquake functional status of base stations and serves as an important basis for subsequent operation and maintenance decisions. 3.2.1. Construction of Fault Tree Model

Are base stations a node or link in a network?

At the level of communication networks, base stations and optical cable lines are typically regarded as nodes and links in the network. The functionality of the network is assessed by connectivity analysis and traffic loss analysis [12, 15].