Short-circuit current control method and device of power system, electronic equipment and medium
By implementing positive and negative sequence reactive current coordinated control in flexible DC systems and dynamically adjusting the current component for different fault types, the problem of excessive short-circuit current of circuit breakers in AC power systems is solved, and reliable circuit breaker disconnection and system safety are improved.
CN122118635APending Publication Date: 2026-05-29ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD +1
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD
- Filing Date
- 2026-03-10
- Publication Date
- 2026-05-29
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Figure CN122118635A_ABST
Abstract
The application discloses a short-circuit current control method and device of a power system, electronic equipment and a medium, and aims to solve the technical problem of how to effectively inhibit the short-circuit current component generated by an alternating current equivalent power grid under a short-circuit fault when the power system occurs a short-circuit fault. The power system comprises a first alternating current equivalent power grid, a flexible direct current and a second alternating current equivalent power grid; the first alternating current equivalent power grid is connected to a first bus side of a main transformer through an alternating current circuit breaker; the flexible direct current and the second alternating current equivalent power grid are connected to a second bus side of the main transformer; when a short-circuit fault is detected on the first bus side, the type of the short-circuit fault is judged; a short-circuit current inhibition strategy corresponding to the type of the short-circuit fault is adopted to inhibit the short-circuit current of the flexible direct current, so as to offset the short-circuit current generated by the second alternating current equivalent power grid when the short-circuit fault occurs on the first bus side, and reduce the total short-circuit current fed into the alternating current circuit breaker.
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