Technical Report Considering Protection IEDs with Digital Inputs and Output under way

The IEC TC 95 Ad Hoc Working Group 3 (AHG3 meeting in Nanjing this week) 

is discussing the scope of a new document with the following Scope;

This Technical Report aims at considering protection IEDs with digital inputs and output complying with IEC 61850 and IEC 61869 standards, in particular 

1. subscribing streams of digital Sampled Values (SV) representing energizing inputs of the protection function.
2. subscribing GOOSE and/or reports by the protection function (eg. cb position, cb failure).
3. publishing GOOSE messages (e.g. trip orders).
4. subscribing time synchronization information.

On this base, this document will give recommendations and guidelines concerning requirements and testing of protection IED with digital inputs and outputs within TC95.

Requirements regarding characteristics of the communication network are not within the scope of this Technical Report. Delays and jitter due to the network have to be taken into account by network engineering. Figure 1 below shows the functional chain of a protection function.  This Technical Report only considers the data received and publish by the protection IED as shown in figure below. 

More to come ...

IEC 61850 Applications in Germany - DKE Documents Online for Free Download

The German National Committee of IEC TC 57 (DKE K 952) has many members of various Working Groups (in the national as well as in the international groups) that discussed the IEC 61850 standard series in general and particularly how the standards could be applied to substation automation and protection. One of the key issues is the modelling and configuration using SCL.

Several documents in German and in English are available:



Click HERE for the link to the above page.

Enjoy the documents.