Neutral Grounding resistors limit the maximum fault current to a value which will not damage generating, distribution or other associated equipment in the power system, yet allow sufficient flow of fault current to operate protective relays to clear the fault.
One nGR is often used to limit ground current on several outgoing feeders. This reduces equipment damage, limits voltage rise and improves voltage regulation. Since grounds could occur in rapid succession on different feeders, a 10 second rating is not satisfactory. The one-minute rating is applied. The rated-time temperature rise
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Gas Turbines (GTs, CGTs) 4. Steam Turbines (STs) 1 2 4 3 Generator Protection 5 Applying Field Static Exciter • DC is induced in the rotor • AC is induced in the stator 6. 4 Cylindrical rotor seen in Recips, GTs and STs Salient pole rotor seen in Hydros ... NGR GSU Transformer 50. 26
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An NGR dissipates P=I2R (or P=IV) power, in the form of heat, for the duration of a ground fault and must be able to do so, repeatedly, for its time rating. For tripping systems, which rapidly de-energize a faulted circuit, a 10-second-rated NGR is typically
Robust optimization of a gas turbine performance under …
2 天之前 · This study aims to enhance the power and efficiency of an axial gas turbine operating in non-deterministic conditions. Additionally, it investigates the influence of randomness stemming from geometrical and operational factors on the turbine’s overall performance. To achieve this, the streamline curvature method is employed to predict and …
GE offers both heavy-duty and aircraft-derivative gas turbines for power generation and industri-al applications. The heavy-duty product line con-sists of five different model series: MS3002, MS5000, MS6001, MS7001 and MS9001. The MS5000 is designed in both single- and two-shaft configurations for both generator and mechanical-drive applications.
A Novel Power Prediction Model Based on the Clustering ... - MDPI
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