SMV system configuration - Arc protection - Bay control and measurement - Motor protection - Transformer protection - 2 winding - Busbar differential protection (low impedance) - Feeder protection - Voltage regulation - Busbar protection (voltage and frequency) - Capacitor bank protection - Interconnection protection - Power management/Load shedding - Back-up protection - Engineering Manual - SSC600 Smart substation control and protection - 1.5 - IEC

SSC600 based solution requires that separate SMV sender IEDs or Merging Units are installed in the substation. The requirements for the SMV sender devices are as defined in Chapter 8.5.4.

SMV system configuration of the SMV sender IED

The SMVSENDER function block must be added to the ACT configuration of the SMV sender IED to activate SMV sending. By doing this the sampled value control block and the related data set are automatically added to the IED configuration when using IEC 61850-9-2 LE. SVCB and the data set are defined by 9-2 LE in which the data set consists of four currents and four voltages with quality attributes. IED sends the residual voltage as a calculated value when there is no physical neutral voltage input available in the IED. IEC 61850-9-2 LE defines a sample rate of 4000 samples per second in 50 Hz system. When using IEC 61869-9, the data set is not fixed, and the correct number of channels and their use should be checked from the IED manual(s) and/or configurations. For IEC 61869-9 the sample rate is always 4800 samples per second.

Figure 1. Adding an SMVSENDER block in the Application Configuration tool of the SMV sender IED

Note: The default data set for SMV sending is fixed and should not be modified.

Figure 2. Setting svID and MAC address of SMV stream of the SMV sender IED

SMV system configuration of SSC600

The SSC600 specific item in terms of engineering is the receiving of SMV. In ACT, one SVRECEIVE_LE or SVRECEIVE_61869 function is needed for every received SMV stream. SVRECEIVE_LE has group signal outputs for phase and residual currents and voltages, which can be connected as inputs to other functions.

Figure 3. SVRECEIVE_LE function of SSC600

For SVRECEIVE_61869, separate ILTCTR, UTVTR and RESTCTR preprocessing functions are required for mapping the received samples to measurements usable in application. SVRECEIVE_61869 output channels represent the measurements received in SMV frame dataset. 1st measurement with quality in dataset is mapped to output CH1, 2nd to CH2 and so on up to CH32.

Note: Special care should be taken when configuring the channel mappings to preprocessing functions to get correct measurements to application.

Figure 4. Example SVRECEIVE_61869 function of SSC600 receiving a 9-2LE dataset

The selection of which SMV stream to receive is done in the Signal Matrix Tool.

Select SSC600 in the plant structure.
Right click and select Signal Matrix.
Map the SMV receive function instance(s) to the corresponding sender IED(s).

Figure 5. Mapping the SMV senders to SVRECEIVE_LE blocks

Due to the high time accuracy requirement of SMV the used time synchronization method must be IEEE 1588 v2. PTP priorities of IEDs and other IEEE 1588 v2 devices in the network need to be configured properly (smaller value means highest priority) for best master clock algorithm in 1588. External accurate master clocks must be set with highest priority and if the IED is selected as backup, master clock priorities should be set accordingly in all IEDs.

Note: Some network routers can block 1588 traffic. Check that all devices using 1588 time synchronization utilize the same master clock.

SMV data set and SVCB should not be manually added or removed with other tools.