Saturday, December 23, 2023

The IEC 61850 Tissue Database reached 1900 Tissues

The IEC 61850 Tissue Database is a very useful tool to help improving the quality of the standard series. The first Tissue (#1) was posted almost 19 years ago. On December 12, 2023 the Tissue #1900 was posted. In average two Tissues per week have been posted. The Tissue process is accepted all over.

The other day I received a question on the definition of power factor (MMXU.PF). The definition is contained in the Logical Node class MMXU of part IEC 61850-7-4:

When I read the definition I was wondering that there was no definition of the sign of the PF. I thought that somebody must have found this long before me ... I checked the Tissue Database to find the corresponding Tissue ... which is #1721 (Power factor related data objects in LN MMXU) dated September 22, 2020.

The following figure depicts the corrected definition.

Recommendation: In case you belief you found an error in the standard series, check first the tissue database and search ... you may find the correct answer ...

Friday, December 8, 2023

Is National, Regional, and International Standardization Work Important?

The editor-in-chief of the well known German monthly technical magazine "atp - Automatisierungs-technische Praxis" publishes the "atp weekly" discussing this and that. This week he discussed if the various user groups and other interest groups in the process industry (NAMUR, IGR, and VCI) are important for the national, regional, and international standardization. The resume is: Yes it is!

The weekly lists several examples. In the third example he reports that the review and comments of the three above mentioned organizations on a single German draft standard has the potential of savings of 80 Million Euro!! 

Click HERE for the weekly archive (in German only) ... accessible for 6 months.

Not to be involved in the standardization is more expensive than spending time and money to participate and discuss what is needed and what should not be specified in a standard. Less is sometime MORE!