Electric Heating Cable Fault Testing System Based on Wavelet Packet and RBF Neural Network
A new method for testing of the electric heating cable fault was proposed,which was based on the wavelet packet and RBF (radial basis function) neural network. The principle used for testing the short-circuit fault of the electric heating cable was described. The flow chart of the detecting system was given. Experimental results showed that the method, which combined the wavelet packet and RBF neural network, could be used to improve the effectiveness of locating the electric heating cable fault.
The Application of Wavelet Transform in Electrical Heating Cable Trouble-shooting Testing
A new trouble-shooting testing method for electrical heating cable based on dyadic wavelet transform is proposed. The paper analyzes the wavelet transform theory used in trouble-shooting testing method. The feature of dyadic wavelet transform is analyzed .The process of denoising and fault location is introduced in detail. The experimental result is analyzed. This method can be used to find the trouble-shooting of the cable rapidly and accurately. It is very important to trouble-shooting testing for electrical heating cable.
APPLICATION OF WAVELET TRANSFORM BASED SIGNAL CORRELATION TECHNIQUE IN FAULT LOCATION OF POWER CABLE
To solve the problem that the inaccuracy of fault time detection is ubiquitous when the impulse method is applied to power cable fault location, the authors propose a signal correlation technique based on wavelet transform, that is, firstly combining the wavelet decomposition with signal correlation, the multi-layer wavelet decomposition is applied to the acquired signal and the high frequency component of the processed signal is removed, and the coarse singular point of the remained low frequency signal is calculated by signal correlation, then the singular point in the high frequency component is found out by searching modulus maximum line, thereby the accurate time of pulse arrival is obtained. The effectiveness of the proposed method is verified by simulation results.