Alstom MiCOM P54 Series - Page 752

P54x/EN CM/La4 Commissioning
(CM) 10-4 MiCOM P543, P544, P545 & P546
CM
8.4.2.8 Load blinder 43
8.4.3 Distance protection operation and contact assignment 44
8.4.3.1 Phase A 44
8.4.3.2 Phase B 44
8.4.3.3 Phase C 44
8.4.3.4 Time delay settings tZ1 Ph, and tZ2 - tZ4 44
8.4.4 Distance protection scheme testing 45
8.4.4.1 Scheme trip test for zone 1 extension only 46
8.4.4.2 Scheme trip tests for permissive schemes (PUR/POR only) 46
8.4.4.3 Scheme trip tests for blocking scheme only 46
8.4.4.4 Signal send test for permissive schemes (PUR/POR only) 47
8.4.4.5 Signal send test for blocking scheme only 47
8.4.5 Scheme timer settings 47
8.4.6 Delta directional comparison 47
8.4.6.1 Connection and preliminaries 47
8.4.6.2 Single-ended injection test 48
8.4.6.3 Forward fault preparation 48
8.4.7 Delta directional comparison operation and contact assignment 48
8.4.7.1 Phase A 49
8.4.7.2 Phase B 49
8.4.7.3 Phase C 49
8.4.8 Delta directional comparison scheme testing 49
8.4.8.1 Signal send test for permissive schemes (POR/POTT only) 49
8.4.8.2 Signal send test for blocking schemes only 49
8.4.9 Out of step protection (if enabled) 50
8.4.9.1 Predictive OST setting 51
8.4.9.2 OST setting 52
8.4.9.3 Predictive and OST setting 52
8.4.9.4 ‘Tost’ timer test 52
8.4.10 Directional earth fault aided scheme (ground current pilot scheme) 52
8.4.10.1 Connect the test circuit 53
8.4.10.2 DEF aided scheme - forward fault trip test 53
8.4.11 DEF aided scheme - scheme testing 54
8.4.11.1 Signal send test for permissive schemes (POR/POTT only) 54
8.4.11.2 Signal send test for blocking schemes only 54
8.4.12 Backup phase overcurrent protection 54
8.4.12.1 Connect the test circuit 54
8.4.12.2 Perform the test 55
8.4.12.3 Check the operating time 55
8.4.13 Restoration of communications and clearing VTS 56
8.5 Check trip and auto-reclose cycle 56
9. END TO END PROTECTION COMMUNICATION TESTS 57