Dynamic Capacity Increase Calculation and Double-Circuit Capacity Increase Strategy for UHV Transmission Cables
Considering various environmental factors,it is generally conservative to define domestic transmission cable load capacity limit,but in many cases the limitation wastes line transmission capacity.On the premise of guaranteeing the cable temperature does not exceed the limit,the cable line can perform its maximum transmission capacity in a certain time by establishing the perfect real-time temperature model for cable conductor,combining with the mature temperature monitoring technology,using software to calculate the real-time feasible short-term capacity expansion plan to provide reference for scheduling.The proposed dynamic capacity increase technology has been applied in Shanghai Yangjian 2145 four-circuit 220 kV cables,providing more feasible strategies for UHV cable regulation.This paper presents and analyzes the game problem of the two kinds of schemes for double-circuit transient capacity increase.And calculation examples quantitatively show the advantages of double-circuit simutaneous transient capacity increase scheme and single-circuit rotational capacity increase scheme,with a view to providing a reliable basis for transient capacity expansion scheme optimization.
NETL
NSTL
万方数据
维普
