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This paper utilizes a significantly improved phase domain synchronous machine model [3] to test a multi-function relay model created for a real time digital simulator. One of the features of the machine model is its capability of simulating stator internal faults. Third harmonic voltage on the neutral and terminals of the machine and its variation with load and stator-ground faults is accurately represented...
Testing IEC 61850 devices is a critical part of any substation automation scheme. Many IEDs have been installed and configured to provide status and control via GOOSE messages. IEDs can also be configured to listen to sampled value data. An important part of IEC 61850 data being transmitted can be the test and quality information. Real time digital simulation using a closed loop environment was done...
By default, a real time digital simulator will execute a simulation case and provide the solution for the controls and power system every time-step (typically 50 musec). The length of the time step is decided by the time taken to execute the longest component algorithm. The component in question may be that for a protective relay which takes in new data only every 1 or 2 milliseconds. The idea behind...
Removal of a single line to ground fault by isolating only the faulted phase frequently leads to the creation of a secondary fault arc. Auto reclose protection schemes depend upon the absence of a secondary arc prior to reclosing. Consequently, there is great benefit from a technology to determine secondary arc extinction detection. The testing of SAED can be difficult and require the expense and...
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