Broken conductor on ground calc examples?

[HamburgerHelper]

I am trying to find sequence network calc examples for a broken conductor lying on the ground, an open A phase with the other side have A phase on the ground. They show an example in Protective Relaying by Blackburn but my calcs don't match up with his and I am having a hard time finding other examples since it is a double fault network. Does anyone have any good examples or references?

 

[davidbeach]

Anderson's Analysis of Faulted Power Systems would be a good reference, but you're also no longer dealing with a power system frequency event and many of the assumptions behind the sequence component models don't hold.

 

[stevenal]

Westinghouse or ABB T&D book, Fig. 22 shows the sequence network connection.

A colleague of mine worked through one of the Blackburn examples and found an error, so it's possible there are others.