GE MiCOM P40 Agile Technical Manual page 156

P44x/EN AP/Hb6
(AP) 5-4
3.2 Channel Aided distance schemes
3.2.1 Standard Scheme
3.2.2 Trip Mode
3.2.3 Carrier send Zone (open scheme)
3.2.4 Distance Carrier Received (Dist CR)
3.2.5 Current reversal guard logic
3.2.6 Unblocking logic (permissive scheme)
3.2.7 Trip on Reclose (TOR) / Switch On To Fault (SOTF) modes
3.2.8 Zone 1 Ext. on Channel Fail
3.2.9 Permissive Overreach Schemes Weak Infeed (WI) Features
3.2.10 Loss of Load (LoL)
3.2.11 Loss of Load Accelerated Tripping (LoL)
3.3 Power Swing
3.4 Other protection considerations - settings example
3.4.1 Distance Protection Setting Example
3.4.2 Teed feeder protection
3.5 Distance protection logic
3.5.1 Blocking / unblocking logic
3.5.2 Channel Aided distance scheme logic
3.5.3 Trip logic and Zone 1 extension logic
3.5.4 Distance trip equation
4 APPLICATION OF INDIVIDUAL PROTECTION FUNCTIONS
4.1 Power Swing detection and blocking (PSB)
4.1.1 Power Swing Detection
4.1.2 Stable Swing and Out Of Step
4.1.3 Biphase loop
4.1.4 Power Swing blocking
4.1.5 Power Swing unblocking (unblocking of the relay for faults during power swing)
4.1.6 What loop is faulty?
4.2 Load blinding (load avoidance)
4.3 Directional and non-directional overcurrent protection
4.3.1 Inverse time characteristics
4.3.2 Application of Timer Hold Facility
4.3.3 Directional Overcurrent Protection
4.3.4 Time Delay VTS
4.3.5 Setting Guidelines
4.4 Negative Sequence Overcurrent Protection
4.4.1 Setting guidelines
4.4.2 Directionalising the Negative Phase Sequence Overcurrent Element
4.5 Maximum of Residual Power Protection – Zero Sequence Power Protection ("Zero Seq
Power" menu)
4.6 Broken conductor detection
Application Notes
MiCOM P40 Agile P442, P444
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46
56
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58
61
67
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