缆系海底观测网恒流输电系统供电方案选择方法

基于恒流输电的缆系海底观测网借助恒流分支技术可以实现网格型拓扑结构,从而存在多种主供电回路与分支供电回路的供电组合方案。针对这一问题,提出了恒流输电系统供电方案的选择方法。根据恒流分支技术的工作特性,提出了N级供电回路的概念,将供电方案抽象成与供电回路一一对应的多个连通图,定义了存活节点率作为供电方案的评价指标,并采用基于可变时间增量法的蒙特卡洛法结合深度优先算法进行估计。该方法适用于已知网络拓扑结构下的恒流输电系统供电方案的优化选择,算例分析表明:该模型及算法能较好地分析供电方案对系统可靠性的影响,且收敛性较好。

Power Scheme Selecting Method for Constant Current Power System of Cabled Seafloor Observatory Network

As the cabled seafloor observatory network based on constant current power transmission needs constant current branching technology to implement grid topology, there is a variety of primary power supply circuit and branched power supply circuit combining schemes. To solve this problem, a method of selecting constant current power scheme is proposed. According to the working characteristics of constant branching technology, the concept of N loop is proposed and the power scheme is abstracted into a one-to-one correspondence connected graph. In addition, the survival rate is presented as evaluation standards and, a variable time increment method based Monte Carlo method combined with the depth-first-search algorithm is adopted to estimate the survival rate of each power scheme. This method is suitable for optimization options to power supply schemes with known network topological structure. A numerical example shows that the model and algorithm can accurately analyze the influence of power supply solutions on system reliability with good convergence at that. This work is supported by General Armament Department Pre-research Project (No. 51327020105) and National High Technology Research and Development Program of China (863 Program) (No. 2009AAJ128).