Verification of models in protection related analysis programs

The integration of multifunctional IEDs with protection, control, monitoring and recording functions in UCA 2.0 or IEC 61850 based substation automation systems results in the implementation of distributed systems for monitoring and recording in substations or power plants. Different types of abnormal system conditions at the distribution, sub-transmission and transmission levels of the power system have specific characteristic that are reflected in the requirements for their recording for model verification. The relays perform on-line analysis that immediately provides a fault summary report including the magnitude and angle of the fault currents and voltages, type of fault, fault location and other useful information for the operations and maintenance personnel. High- and low-speed disturbance records can be used for the verification of the models used for dynamic stability studies. Waveform records from advanced monitoring and recording devices are identified as the primary source in the process of verifying the models in electromagnetic transient analysis software.