Ultra-High Voltage (UHV) Application Scenario

Core Scenario Requirements

The scenario must adapt to extreme operating conditions of high voltage, large current and strong electromagnetic interference. Core material requirements include superior electrical insulation, high reliability, long service life and excellent heat dissipation performance. It solves industrial pain points such as overheating failure, insulation breakdown and insufficient measurement accuracy of IGBT modules in UHV converter valves, ensuring the safe and stable operation of national energy transmission backbone networks.

Specific Applications of Six Major Products

1. Single/Polycrystalline Diamond Substrates and Heat SinksApplied to substrates of UHV SiC power devices and heat sinks for high-voltage high-frequency thyristors.The ultra-high thermal conductivity of single-crystal diamond substrates suppresses the self-heating effect of high-voltage SiC power chips, improves their voltage withstand level and current-carrying capacity, and promotes the upgrading of UHV flexible DC transmission technology toward higher voltage levels and larger transmission capacity.
2. Diamond Composite Heat Sinks and EnclosuresUsed for core heat sinks in the water-cooling system of UHV converter valves, heat dissipation enclosures of DC circuit breaker power modules, and heat sinks of power devices in Static Var Generators (SVG).Diamond-copper composite heat sinks achieve a thermal conductivity of 1000 W/m·K, solving the high heat flux density heat dissipation challenge of UHV high-power devices. They greatly reduce the load of the converter valve water-cooling system and improve equipment overload capacity and operational safety. Meanwhile, the enclosures feature outstanding flame retardancy and insulation performance, fully complying with safety specifications for UHV power stations.
3. M9/M10 Copper-Clad Laminates & TVG Glass SubstratesApplied to high-speed signal boards for the control and protection systems of UHV converter stations, and high-frequency acquisition boards for measurement and control systems in DC transmission projects.Extremely low dielectric loss ensures distortion-free transmission of high-speed measurement and control signals, and strong electromagnetic interference resistance withstands the intense electromagnetic environment inside converter stations. High thermal conductivity also resolves heat dissipation issues of measurement and control equipment, improving the response speed and reliability of the control and protection system.
4. Customized Diamond Heat Dissipation ModulesProvide integrated thermal management solutions customized for control and protection systems, converter valve towers, and DC de-icing devices in UHV converter stations.Optimized by thermal simulation design, they adapt to the extreme outdoor environment of converter stations, including wide temperature variation, strong electromagnetic fields and high humidity. They solve heat accumulation caused by densely arranged control equipment and ensure zero-fault operation of the control and protection system for UHV transmission.
5. Aluminum Silicon Carbide (AlSiC)As a core packaging material for UHV flexible DC transmission projects, it is mainly used for packaging substrates of IGBT modules in UHV converter valves, heat dissipation bases of flexible DC power devices, and equipment enclosures of converter station control units.AlSiC delivers a thermal conductivity of 280 W/m·K, with a coefficient of thermal expansion precisely matched with SiC power chips. It relieves excessive thermal stress and solder joint fatigue failure of IGBT modules under UHV high-current operating conditions, extending module service life by more than three times. Its excellent insulation and anti-electromagnetic interference performance suit the strong electromagnetic environment of converter stations, guaranteeing long-term stable operation of flexible DC transmission systems.
6. Quantum DiamondApplied to ultra-sensitive current/voltage measurement in UHV power grids and on-line partial discharge monitoring systems.Quantum-diamond-based current sensors enable non-contact, ultra-high-precision large current measurement, with accuracy over 10 times higher than traditional transformers. Requiring no iron core, they have no magnetic saturation risk and perfectly meet the large-current measurement demands of UHV DC transmission.They also support ultra-sensitive on-line monitoring of grid partial discharge, enabling early warning of equipment insulation faults, preventing power grid safety incidents at the source, and safeguarding the stable operation of the national energy network.