School of electrical engineering,Naval University of Engineering
Due to the uneven distribution of impedance parameters of transmission lines, the natural distribution of power flow in the grid usually does not conform to the expected distribution. The potential of power grid can be fully exploited and the cost of new transmission line can be reduced by using effective power flow regulating device. Based on the introduction of the structure and voltage regulation principle of the High-voltage Hybrid Unified Power Flow Controller, the power flow regulation performance of HHUPFC on a single transmission line in this paper is calculated. After the HHUPFC is connected to ring network transmission lines, the power flow regulation effect of HHUPFC is theoretically deduced. Through the simulation of IEEE30 bus systems, the effect of HHUPFC on power flow equilibrium in the ring network lines is verified. HHUPFC can reduce the power flow imbalance of transmission channels "4-12" and "9-10" in IEEE30 bus system from 82% to 3%. The simulation results show that when the same power flow regulation effect is achieved, compared with the traditional HEUPFC, the HHUPFC used in this paper can reduce the cost of secondary winding by 70%, the capacity of UPFC by 55%, and the cost of on-load tap changer is reduced by 39%. The power flow regulation function of HHUPFC is also verified in a 220kV ring network in Guangdong power grid.
费雯丽,王晓蓓,张天然. HHUPFC在环网线路中的潮流调节应用[J]. 科学技术与工程, , ():复制