The Static Reactive Power Compensation (SVC) device is an important device for comprehensively managing voltage fluctuations, flicker, harmonics, and voltage imbalance. SVG is a new static reactive power compensation device more advanced than SVC. It is an important part of flexible AC Electric power transmission (FACTS) technology and customized power (CP) technology, and the development direction of modern reactive power compensation devices. Both have been widely used in power transmission and distribution systems: long-distance power transmission, urban secondary substation (35/110kV), electric arc furnace, rolling mill hoist and other heavy industrial loads, regional power grid, photovoltaic power supply, wind farm, Electric locomotive power supply and other fields. SVG is a high heat component that requires a radiator with excellent heat dissipation performance to ensure stable operation and increase service life.