Flexible direct-current distribution network fault positioning and isolating method
A flexible DC power distribution and network fault technology, which is applied in the direction of fault location, current/voltage measurement, fault detection according to conductor type, etc., can solve the problems of inapplicability, achieve isolation, high reliability, and easy realization of judgment conditions Effect
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[0035] The present invention proposes a fault location and isolation method for a flexible DC power distribution network, which is a fault location and isolation method for a flexible DC power distribution network of a full-bridge sub-module FBMMC based on the current zero-crossing detection principle; mainly in the protection monitoring time interval The current measured by the protection at both ends of the fault line will not cross zero at the same time, and the current measured at both ends of the non-fault line will cross zero or not cross zero at the same time. Accurate positioning.
[0036] Below in conjunction with the accompanying drawings of the description, the specific implementation steps of the present invention are described in detail:
[0037] First of all, the present invention proposes a fault location and isolation method for flexible DC power distribution networks based on the principle of current zero-crossing detection on the premise that the fault curren...
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