Rapid power distribution network reliability assessment method based on element transfer characteristics

• Main Authors: LIN HAOFAN, OU YUQIANG, CAI DEHUA, WEN JIANZHONG, ZENG JIANG, WANG LIGUO, YU TAO, CHENG LEFENG
• Format: Patent
• Language: English
• Published: 25.03.2015
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a rapid power distribution network reliability assessment method based on element transfer characteristics. The method includes the steps that the power outage influence on upstream loads by a downstream fault is considered in the adverse current transfer process of reliability indexes, and the power outage influence on downstream loads by an upstream fault is considered in the fair current transfer process. In the adverse current transfer process, the reliability indexes of a branch line are transferred to a feeder line and then transferred to a feeder line of the upper grade from the tail end of the feeder line. In the fair current transfer process, the operation time of different protective elements is included in the reliability indexes through step-by-step transfer of the protective elements. The two equivalence processes are combined to obtain the reliability indexes of all points in a system. The unreliable movement rate of the protective elements is considered, and the reliability indexes can be transferred in a whole network. The centralized and classified transfer mode is adopted, the reliability indexes can be transferred in the whole network, and the more and longer the feeder lines are, the more obvious the effect is.