世界首台800千伏大容量断路器研制成功 提升西北电网应对极端短路电流能力

Group 1 - The core achievement is the successful development of the world's first 800 kV/80 kA high-capacity circuit breaker, which has recently passed technical appraisal by the China Electrotechnical Society [2] - The development addresses the increasing short-circuit current issues in the 750 kV grid due to accelerated construction and large-scale renewable energy integration in the northwest power grid [2] - The project involved innovative simulation models and parameter measurement platforms, leading to the creation of a new type of graphene contact material that meets the operational lifespan requirements of the circuit breaker [2] Group 2 - The new product's performance parameters are internationally leading and compatible in size with existing equipment, allowing for direct replacement and upgrades, which will significantly enhance the efficiency and cost-effectiveness of grid capacity upgrades [3] - The circuit breaker will improve the northwest grid's ability to handle extreme short-circuit currents, supporting the safe and stable operation of the energy cluster transmission network [3]