Report control block trigger options - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - IEC 61850 Engineering Guide - REX615 Protection and control - PCL1 - IEC - ANSI

The report control block properties can be configured in the Object Properties window. The properties contain standard options such as buffering and trigger options. The parameters have effect on the reporting behavior and the content of the MMS reports sent to the clients. Detailed description of the report control block options can be found in the IEC 61850 standard part 7-2.

Trigger options

The triggering method for the MMS report can be configured under Trigger Options in the report control block’s Object Properties window. By default all data sets are configured to be triggered by data change, data update and quality change. The General Interrogation option is also enabled to allow the client to make interrogation for the data set content.

For fast event based reporting it is recommended to keep these default trigger options enabled for most datasets. Some datasets, such as ones including measurement and counter data, can report data with 'data update' flag only.

Cyclic trigger option is recommended for measurement data only. It can be used for periodic update of instantaneous measurement values. More information in chapter 'Cyclic reporting'.

Cyclic reporting

The Cyclic trigger option can be enabled to allow periodical reporting of the data set values. Enabling the cyclic trigger option also changes the internal behavior of the relay to periodically update and report the instantaneous values of the data set content, such as instCVal. This can be beneficial, for example, in reporting slowly changing measurement values periodically to the client. By enabling the cyclic trigger option, instantaneous measurement values can be reported in a periodical manner instead of data change based reporting. As the data change based reporting relies on the internal deadband values of the measurement Application Function, it can be slow to report small changes in the measurement data. The cycle period for updating and reporting the data can be set by the Cycle Time property.

Note: To configure cyclic reporting only, enable the Cyclic trigger option, and disable the Data Change and Data Update trigger option. If all options are enabled, the report control block reports cyclical and event based reports to the client.

Note: It is recommended to use the default Data Change and Data Update trigger options for status data for fast change detection. This includes most of the default data sets with Stat (ST) data objects. The Cyclic trigger option is recommended only for the periodical sending of measurand (MX) values.