High altitude plateau electricity solution

High altitude plateau electricity solution

China has the largest plateau region in the world. With the development of the western region and the energy economy in the country, the demand for electrical equipment in plateau areas is increasing day by day. As a leading industry, the power industry is facing unique environmental characteristics such as thin air, low air pressure, low oxygen content, large temperature difference between day and night, low temperature excavation, strong ultraviolet radiation, large sandstorms and dust, low rainfall, dry climate and other plateau climates, and its performance requirements are constantly improving.

Facing the current situation:

1. Air pressure, low air density, weakened insulation strength, and poor heat dissipation conditions;
2. Low temperature, large temperature difference between day and night, and fast component loss;
3. Low absolute humidity, low precipitation, long frozen soil period, and harsh environment.

Our Value:

Shanghai Zhiyou Transformer and Box type Substation has more than ten years of professional production experience and operational performance, complete product qualifications, and has been committed to creating a highly reliable power supply environment with quality and professionalism for many years. Based on the on-site environment and operational characteristics, we provide customized design solutions and small, compact, highly reliable, and maintenance free core products to bring safer and more reliable power distribution equipment to high-altitude areas and provide strong power guarantee for users.

Solution for component selection in high-altitude areas:

1. High voltage components: Select specialized electrical equipment specifically developed for high-altitude areas, such as high-altitude transformers, high-altitude vacuum circuit breakers, etc. The air gap between conductors in the cabinet and between conductors and ground should be treated according to the insulation distance requirements of high-altitude areas to prevent insulation breakdown, or use higher voltage level electrical equipment, such as voltage and current transformers and insulator sleeves, whose electrical gap and creepage distance need to be corrected to meet the factors required for altitude increase.
2. Control components: Control devices, generally electronic devices, weak current control, high reliability, less affected by altitude.
3. Low voltage components: The insulation voltage of the main switch of low-voltage switchgear is appropriately selected according to the altitude. For example, the normal rated voltage of the power grid is 400V. At an altitude of 4000m, frame switches and plastic shell switches with insulation voltage of 1000V can be selected to ensure a larger margin of external insulation strength, thereby reducing the impact of high-altitude low pressure. Low voltage current transformers and other devices should be selected with special treatment to increase the creepage distance and electrical clearance, in order to ensure that the secondary side's power frequency withstand voltage and other indicators can pass. Other low-voltage devices on the secondary side should be selected according to ordinary devices.
4. Insulation materials: Select insulation materials that are not significantly affected by temperature differences and have a high degree of anti-aging (such as DMC or SMS molding materials, etc.). While ensuring high strength, the deformation and aging degree are small, suitable for places with high insulation coordination requirements. At the same time, attention should be paid to the requirements of the altitude correction factor for creepage distance and electrical clearance size.