Research-related posts

A colleague asked me about sources of free text books or publications on power distribution and generation, as one of his retired relatives was interested in staying up to date in the industry. After a bit of searching I found the following publications.

These are a good alternative to commercial...

These instructions are intended to help you start using the Endace DAG cards. They are not endorsed by Endace, and if you're stuck then you should refer to their manuals or contact their technical support people (who are quite helpful). These instructions are based on the DAG7.5G4 PCI Express card.

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The question was asked "What is the basic difference between PRP (Parallel Redundancy Protocol) and HSR (High availability Seamless Redundancy)". My response was:

Very simply PRP is a duplicate network of whatever design you have (could be rings, mesh or star), while HSR is a ring network. I've se...

The question was asked: "Is is possible to connect different Ethernet switches (Manufacturer / Configuration / Specification) in a ring network ? If yes, then how could be the performance of data transfer?". My response was:

There are a number of international standards that deal with ring topolog...

The real benefit of using a function specific logical node (e.g. PTRC, PDIF etc) is that the LN conveys a lot of semantic information.

If you use GGIO you need to maintain a parallel set of document that describe the purpose of each GGIO. This is really no benefit over DNP3 or Modbus point...

The question “What’s the difference between bay ,process and station level, why and when we use them?” was asked. My response was:

@Mudassir, if you have access to 61850 standards then the best place to get the formal definitions is from IEC 61850-1. The station, bay and process levels are defined...

The question was asked whether IEC 61850-9-2 Process Bus will be a future trend in the Utilities market, even for indoor substations? My response was:

I believe there is a strong benefit for indoor GIS substations too. 9-2 process buses facilitate vendor independent connections to non-conventional...