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首页> 外文会议>2011 International Conference on Electrical Machines and Systems >Analysis and detection of turbo-generator stator turn-to-turn fault with multi-loop method
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Analysis and detection of turbo-generator stator turn-to-turn fault with multi-loop method

机译：汽轮发电机定子匝间故障的多回路分析与检测

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Turn-to-turn fault in the synchronous generator stator winding has been considered the most challenging one since the other types of stator winding related failures are usually the consequence of turn faults. In this paper we studied the turbo-generator in no load and load conditions and utilized the multi-loop method which can consider the asymmetric problem to detect the turn-to-turn fault of stator winding. The multi-loop model of the turbo-generator was established and the permeance analysis was used to calculate parameters of the model. The fault detection accuracy was improved by using the decomposition of wavelet analysis to detect the even harmonics in field current signal. The simulation results show that the stator turn-to-turn fault can be unambiguously detected from the field current signal.
机译：同步发电机定子绕组中的匝间故障被认为是最具挑战性的故障，因为其他类型的定子绕组相关故障通常是匝间故障的结果。本文研究了汽轮发电机在空载和空载条件下的情况，并采用多环法考虑不对称问题来检测定子绕组的匝间故障。建立了汽轮发电机的多回路模型，并通过磁导分析来计算模型参数。通过小波分析分解检测励磁电流信号中的偶次谐波，提高了故障检测的准确性。仿真结果表明，可以从励磁电流信号中明确检测出定子匝间故障。

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