To limit the short-circuit-current level and security system stable operation

the paper developed an ultrahigh capacity current-limiting reactor. The design improves the current carrying capacity of product by using high-quality wire and a new method winding way; To avoid overheating problems occur

optimize the structure of metal supporting annexes by computing the magnetic field around products. External insulation and corona structure is designed to ensure the safety of products

and the power and thermal stability is also calculated. Finally

the performance indicator of reactor is verified by a number of tests

test results show that the product meets the requirements of national standard and the tender documents.