- 27. September 2021 - Digital fault recording
In the last blog, we looked at combining and overlaying disturbance records from different data sources to evaluate network disturbances across locations. The focus was on manual overlaying of data using the SHERLOG Expert analysis software.
In the current release of the SHERLOG-Expert software, we have now added the ability to automatically merge disturbance records from any number of SHERLOG CRX and EPPE CX devices into a single disturbance record. Since the data is merged within the SHERLOG-Expert software, it does not matter whether the individual devices are installed together in one station or distributed over entire regions.
A single SHERLOG CRX can be equipped with up to 32 analog and up to 128 binary inputs. In many stations, however, there are considerably more signals to be monitored, so that several SHERLOGs are almost always used within a station. In this case, the KoCoS interlink interface ensures that all devices always operate absolutely synchronously in terms of time and that cross-trigger information is exchanged between them for the parallel recording of network faults.
Thanks to the new functionality of the SHERLOG-Expert software, it is now possible to create so-called combined devices and assign any SHERLOG CRX or EPPE CX devices to them. A combined device thus consists of at least 2 or more physical devices. The disturbance records of these combined devices then automatically contain all channels of all assigned devices, summarized in one record.
This method simplifies the handling and the disturbance analysis substantially, since per grid event only one file must be opened, analyzed or passed on. Of course, it is still possible to access the recordings of the individual physical devices separately as usual.