Multi-generator ship intermediate voltage electric power system protection method and device
A power system protection and power system technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as excessive current at the fault point, rising current at the fault point, and easy damage to equipment, etc., to achieve high power supply continuity and simple setting , easy-to-achieve effects
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[0034] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0035] As shown in the figure, the protection method for the medium voltage power system of a multi-generator ship is to connect a grounding transformer to the busbar of the ship's medium voltage power system, and the grounding transformer is connected to a resonance grounding device. In each generator in the ship's medium voltage power system The high-resistance grounding device is connected to the neutral point, and the resistance in the high-resistance grounding device is set by a multi-tap method to adapt to the changing working conditions of the ship.
[0036] The resistance setting in the high resistance grounding device and the number of connected generators m and the generator single-phase ground capacitance C protected by the grounding resistance g Related,
[0037] Resistance value R when multiple generators are running in parallel g The settin...
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