The chief executive of Sydney Trains says he will consider compensating Sydneysiders who were seriously inconvenienced by the major delays across the network on Sunday.

A major operation to switch the four-decade-old signalling system to digital between 11pm on Saturday and 6am on Sunday was not completed until 9.30am on Sunday, causing knock-on delays around the train network.

Sydney Trains chief executive Howard Collins told the Today show there was a “good service” on the rail network so far on Monday, but there were buses on standby in case there were more issues.

"Everything is on hand just in case we have another blip," he said.