Coordination of generator protection with generator excitation control and generator capability

Mozina, Charles J.

doi:10.1109/cpre.2009.4982510

Cited by 7 publications

(1 citation statement)

References 1 publication

(2 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the generator is equipped with an over-flux limiter to prevent internal damage by overexcitation, given that the protection technique is based on the V/Hz ratio, the faulty state of the interrupted relay cannot be easily determined upon the occurrence of a disturbance that increases in proportion to the frequency and voltage, when the V/Hz ratio is kept constant [52].…”

Section: = 444kfφmentioning

confidence: 99%

Application of Reference Voltage Control Method of the Generator Using a Neural Network in Variable Speed Synchronous Generation System of DC Distribution for Ships

Jeon¹,

Kim²

2020

JMSE

View full text Add to dashboard Cite

In the case of DC power distribution-based variable speed engine synchronous generators, if the output reference voltage is kept constant regardless of the generator engine operating speed, it may cause damage to the internal device and windings of the generator due to over-flux or over-excitation. The purpose of this study is to adjust the generator reference voltage according to the engine speed change in the DC distribution system with the variable speed engine synchronous generator. A method of controlling the generator reference voltage according to the speed was applied by adjusting the value of the variable resistance input to the external terminal of the automatic voltage regulator using a neural network controller. The learning data of the neural network was measured through an experiment, and the input pattern was set as the rotational speed of the generator engine, and the output pattern was set as the input current of the potentiometer. Using the measured input/output pattern of the neural network, the error backpropagation learning algorithm was applied to derive the optimum connection weight to be applied to the controller. For the test, the variable speed operation range of the generator engine was set to 1100–1800 rpm, and the input current value of the potentiometer according to the speed increase or decrease within the operation range and the output of the voltage output from the actual generator were checked. As a result of neural network control, it was possible to confirm the result that the input current value of the potentiometer accurately reached the target value 4–20 mA at the point where the initial speed change occurred. It was confirmed that the reference voltage was also normally output in the target range of 250–440 V.

show abstract

Section: = 444kfφmentioning

confidence: 99%