When the fault occurred, the voltage of phases A and C on the 35kV busbar No. This is characteristic of a typical single-phase metallic ground short circuit fault (phase B busbar insulation breakdown to ground). The busbar zone, for the purpose of protection, includes not only the busbars themselves but also the isolating switches, circuit bre kers and the associated connections. The high magnitude fault currents require high-speed. A busbar protection must be capable of clearing all phase-to-earth faults, and in the case where they can occur, phase-to-phase faults. During substation operation, accidents from PT electromagnetic resonance or insulation aging still occur. For instance, in March 2015, a 35. Research on fault diagnosis for 35 kV single-ended radial distribution networks is still in its infancy compared to other hot topics in the industry, such as short-circuit fault detection and fault node localization.
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