Electric energy quality monitoring and electric appliance fault analysis system based on wavelet neural network and working method thereof
A technology of power quality monitoring and wavelet neural network, applied in neural learning methods, biological neural network models, neural architectures, etc., can solve problems such as unsuccessful cases
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Embodiment 1
[0072] A power quality monitoring and electrical fault analysis system based on wavelet neural network, such as figure 1 As shown, including main control system, intelligent circuit breaker,
[0073] Such as image 3 As shown, the intelligent circuit breaker includes a first central processing unit and a first power supply module connected to the first central processing unit, a switch (air switch), a first bus module, a voltage and current sensor, and the first power supply module is connected to a switch; The sensor is used to obtain the current signal in the power grid, and the first central processing unit is used to send an instruction to the first bus module, ordering the first bus module to send the obtained current signal to the main control system; the first bus module is used to send the obtained current signal to the main control system; The signal is sent to the main control system, and the first power module is used to realize the power supply of the intelligent...
Embodiment 2
[0077] The working method of the power quality monitoring and electrical fault analysis system described in embodiment 1, such as Figure 5 shown, including the following steps:
[0078] (1) The smart circuit breaker obtains the current signal in the power grid through the voltage and current sensor, and sends the current signal to the main control system through the second bus module in real time;
[0079] (2) The main control system receives the current signal sent in step (1) through the second bus module, and obtains the harmonic information of the current signal through the trained wavelet neural network calculation. The harmonic information includes the harmonic order, harmonic The frequency and the time point of its appearance, the phase of the harmonic, and the amplitude of the harmonic;
[0080] The current signal obtained by the smart circuit breaker can be decomposed into a linear combination of wavelet functions of different scales and different time shifts, where...
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