Sunday, October 6, 2019

Cyber Security and SAFETY in Power Systems

The National Cybersecurity Center of Excellence (NCCoE) at NIST just released a draft of the NIST Cybersecurity Practice Guide, SP 1800-23, Energy Sector Asset Management, on September 23, 2019, and is requesting your feedback. Public comments on the draft will close on November 25, 2019. "...that will help energy organizations address the security challenges of OT asset management. ..."

The main objective is to have a look at "programmable logic controllers (PLCs) and intelligent electronic devices (IEDs), which provide command and control information on operational technology (OT) networks ..."

Click HERE for the Guide.

The Guide seems to be written by mainly non-protection engineers or even non-electrical engineers. I have read the other day in a discussion about the Guide that the term SAFETY was not mentioned in the  guide ... huch ...

Here is my explanation why SAFETY is not in the scope:

The safety in electric power systems is mainly managed by PROTECTION devices. These devices protect humans, equipment and power flow. Protection has the highest priority in electric power systems. Protection is also crucial for availability and reliability. Protection engineers are - in my view - the most critical engineers.

My experience is that IT and OT people fear the high voltage ... starting at 100 Volt or so ... so, that may be the reason the document NIST SP 1800-23 does not discuss any protection (SAFETY) related function.

They don't have Sr. protection engineers in their mind ... maybe they don't know what these engineers are doing ... and how important they are to keep the power flowing.

A friend of mine (a senior protection engineer) and I have conducted many IEC 61850 seminars together ... I have always admired him!!

My friend answered:

In general unfortunately it is as you describe.
The circuit breaker doesn’t work? The protection engineers have invented the “breaker failure”. This is a bit biased, any component can fail of course…
The Sampled Values are not delivered? The relay has to manage that. They are “delivered wrong”? The relay has to try to understand it and be robust.
Yes, it is probably more difficult to design and set a good protection system (including the design of the relay) than doing an airplane...

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