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SINGLE-ENDED FAULT POSITIONING METHOD AND SYSTEM FOR HIGH-VOLTAGE DIRECT-CURRENT TRANSMISSION LINE OF HYBRID NETWORK
SINGLE-ENDED FAULT POSITIONING METHOD AND SYSTEM FOR HIGH-VOLTAGE DIRECT-CURRENT TRANSMISSION LINE OF HYBRID NETWORK
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机译：单端故障定位方法和系统高压直流输电线路的混合网络
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摘要
The disclosure discloses a single-ended fault positioning method and system for a HVDC power transmission line based on a hybrid deep network. The method comprises the following: collecting rectification side bus output voltage and current signals of a HVDC power transmission system under different fault types, fault distances and transition resistances as an original data set; eliminating electromagnetic coupling of the bipolar direct-current line by using phase-mode transformation, extracting IMF components of fault voltage and current signals under different fault scenes by using variational mode decomposition, and calculating TEO of the IMF components to obtain a fault data set after feature engineering; normalizing the fault data set, and dividing the fault data set into a training set and a test set; and successively inputting the training set and the test set into a hybrid network of a convolutional neural network and a long short-term memory network for training and testing.
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