Title :
Comparison of Rotor Earth Fault Protections in Three Gorges Hydropower Plant
Author :
Yi, Na ; Yi, Yawen
Author_Institution :
Coll. of Electr. & Inf., Three Gorges Univ., Yichang, China
Abstract :
Rotor earth fault protection is used to detect earth faults in the excitation circuit of synchronous machines, ping pong type and injecting-step-voltage rotor earth fault protection are both used in Three Gorges Hydropower Plant. This article analyzes both the principle and application of the two types of protections, together with the operation on giant generating set, advantages and disadvantages of two types of protection were compared with.
Keywords :
earthing; fault location; hydroelectric power stations; machine protection; power generation protection; rotors; synchronous machines; earth fault detection; excitation circuit; injecting-step-voltage rotor; ping-pong type rotor; rotor earth fault protection; synchronous machine; three Gorges hydropower plant; Circuit faults; Earth; Generators; Grounding; Resistance; Rotors; Voltage measurement;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6253-7
DOI :
10.1109/APPEEC.2011.5748800
