Critical Clearing Angle example P. 0.8 p.u. q- 0.074 p.u. connected to infinite bus of 1.0 p.u. A Three phase fault on any of the transmission feeder lines; Determine the critical clearing angle. What is the critical clearing angle - The critical clearing angle is the angle through which a generator rotor must be displaced from its equilibrium position following a disturbance (such as a fault) to just maintain stability in a power system. In other words, it is the maximum angle by which the rotor of a synchronous machine can be swung following a disturbance and still allow the system to reach a stable post-fault condition. Xt = 0.2 E' OBE X=0.3 1 V₁=1.1 XL1=0.3 XL2=0.3 The current flowing into the infinite bus is S* V* 1== 0.8-j0.074 1.020° = 0.8-j0.074p.. B The transfer reactance between internal voltage and the infinite bus before fault is: 2 V 1.020 8
Critical Clearing Angle example P. 0.8 p.u. q- 0.074 p.u. connected to infinite bus of 1.0 p.u. A Three phase fault on any of the transmission feeder lines; Determine the critical clearing angle. What is the critical clearing angle - The critical clearing angle is the angle through which a generator rotor must be displaced from its equilibrium position following a disturbance (such as a fault) to just maintain stability in a power system. In other words, it is the maximum angle by which the rotor of a synchronous machine can be swung following a disturbance and still allow the system to reach a stable post-fault condition. Xt = 0.2 E' OBE X=0.3 1 V₁=1.1 XL1=0.3 XL2=0.3 The current flowing into the infinite bus is S* V* 1== 0.8-j0.074 1.020° = 0.8-j0.074p.. B The transfer reactance between internal voltage and the infinite bus before fault is: 2 V 1.020 8
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter9: Unsymmetrical Faults
Section: Chapter Questions
Problem 9.13P: Consider the oneline diagram of a simple power system shown in Figure 9.20. System data in per-unit...
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