基于间隔层的闭锁规则在110 kV变电站工程应用

Application of 110 kV Substations based on Interlocking Rules between Bay Levels

针对智能变电站间隔层设备CPU性能较差,不能够在实现控制功能的时候使用拓扑结构来进行搜索这一缺陷,以各器件之间相互制约的逻辑关系表达式代替传统拓扑搜索的闭锁规则,根据图论中无向图的概念,将变电站的电气主接线图转化成邻接矩阵,化简计算,得到相应的可达矩阵,最终得到闭锁公式.以宜都高坝洲110 k V变电站工程为例进行分析,结果表明:计算出的闭锁公式与变电站的闭锁逻辑回路图结果一致,同时,变电站电气主接线全图的闭锁公式用时不到70 s,子图用时不到40 s.将电气主接线图分解成子图来进行运算,可以减少时间,提高了运算的实时性,但同时一个子图只能得到部分开关的闭锁逻辑,如何对电气主接线图进行选取和计算,应根据实际情况来具体分析.

The poor CPU of the devices of bay levels in intelligent substations fails to use the topology structure to search when its control function is used. To address this problem, logical relational expressions among devices were applied to replace traditional interlocking rules through topology structure. Based on the concept of undirected graph in graph theory, primary wiring diagram of substations was transformed into adjacency matrix, and calculation was simplified, thus obtaining a corresponding reachable matrix. Interlocking rules were finally formulated. Gaobazhou 110 kV substation was taken as an example, the results of which show that the calculated interlocking rules accord with substation logical interlocking circuit diagrams. At the same time, it takes less than 70 seconds to get the interlocking rules of the whole primary wiring diagram, and less than 40 seconds for those of secondary wiring diagram. The way to divide the primary wiring diagram into some sub-diagrams for calculation can reduce time and improve real-time operation, though a sub-diagram can only obtain partial interlocking rules. When it comes to selection and calculation of a primary wiring diagram, real situations should be taken into account.