Anti-disturbance tripping method for high-voltage capacitor unbalance protection with internal fuse
A technology of high-voltage capacitors and internal fuses, which is applied to emergency protection circuit devices, instruments, electrical components, etc., and can solve problems such as complex structure, low reliability, and loss of high-voltage capacitors
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[0031] The internal series-parallel structure of the DC filter high-voltage capacitor with internal fuse is as follows: Figure 5 As shown, where P is the number of capacitors connected in parallel in one arm, M is the number of parallel capacitive element groups connected in series in one capacitor, and N is the number of parallel capacitive elements in a series of capacitive element groups. There is a fuse in series in each capacitive element group. When a certain capacitive element breaks down and short-circuits, the remaining intact capacitive elements in the same string of capacitive element groups will discharge through the fuse of the faulty capacitive element, and the fuse will be blown. The capacitive element will experience the process of first short circuit and then open circuit. The same series-parallel capacitor element may have a development process in which multiple capacitor elements are short-circuited and then disconnected, at most a. When the a+1th capacitiv...
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