Approach of faulty section diagnosis based on creditability

As there may be power feedback in healthy branches,an approach of faulty section diagnosis based on creditability is proposed,which uses the misoperation rate and refuse-to-operate rate of fault indicators.An attribute reduction algorithm based on distinctness matrix and logical operation is used to reduce the original decision table.The creditability of faulty section satisfying the conditions of reduced decision table is analyzed and the task to determine the most suspected faulty section has two steps:to recursively calculate the fault creditability of local section and to find the maximum fault creditability.The automatic generation of fault mode and power feedback probability is studied based on the topological relation among graphic components,which makes the indicator-based fault addressing system of distribution network universal.