Offshore wind power low frequency 20Hz GIS

Offshore wind power low frequency 20Hz GIS

1. Low frequency 20Hz GIS application

It is used for offshore wind power projects in middle and far seas, and adopts 20Hz low-frequency transmission technology. The effective load capacity of the cable is improved by reducing the frequency to increase the cable carrying capacity, and the transmission distance of electric energy is extended greatly. There is no need to build an offshore converter station, which greatly reduces the construction and maintenance costs of the delivery system

2. Main parameters on low frequency 20 Hz GIS

72.5kV 20Hz GIS: Rated frequency: 20Hz, rated current: 3150A, rated short circuit breaking current: 31.5kA, electrical endurance: E2 class
252kV 20Hz GIS: Rated frequency: 20Hz, rated current: 4000A, rated short circuit breaking current: 50kA, electrical endurance: E2

 

3. Low frequency 20Hz LCC main parameters

40.5kV 20Hz LCC:Rated frequency: 20Hz, rated short circuit breaking current: 31.5kA, electrical life: 20 times, mechanical endurance: 10,000 times.