Current-limiting resistor-capacitor branch circuit, resistor-capacitor type direct current circuit breaker and control strategy
A resistance-capacitance, branch-circuit technology, used in emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. Conducive to rapid recovery, improved stability and reliability
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[0045]In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0046] like Figure 1-2 As shown, the present invention proposes a resistance-capacitance DC circuit breaker suitable for flexible DC transmission systems, including a current-carrying breaking branch, a current-limiting resistance-capacitance branch: a current-carrying breaking branch is routed by an ultra-fast mechanical switch UFD, a current transfer switch LCS is formed in series; the current-limiting resistance-capacitance branch includes a fully-controlled switch first switch T 1 , the second switch T 2 , capacitor C, resistor R 1 , R 2 , R 3 , where T 1 , R 1 , C in series, R 2 Connected in parallel at both ends of C, T 2 , R 3 Connected in parallel at both ends of C after being connected in series, T 1 , T 2 Arr...
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