Trust in a digital world — Examples of why we still test

This paper reviews the principles of digital design in protection and control systems across many industries - not just Power Systems - and explores why we still test them. The test methods used by other industries and the processes that mandate them are presented. Comparisons are made to our own energy industry and parallels made to what we should be improving on as an industry to ensure system security and reliability as the result of any test we do perform.