Fault Diagnosis of Resistance Network Based on Fault Dictionary Method

According to the experimental teaching practice process of circuit open experiment,this paper studies the fault dictionary method of fault diagnosis of resistor network. A fault dictionary of a single resistor in the circuit model is established by using the fault dictionary method for a simplified power system grounding network circuit model. After the fault voltage is known the fault resistance can be determined according to the fault dictionary. The resistance of the fault resistor can be calculated by KCL law and Ohm′s law. Finally,a general fault diagnosis software was designed with the help MATLAB Graphical User Interface (GUI). The experiment greatly stimulated students′ interest in experiment through the guidance of "problem-discussion-discussion independent problem solving",and exercised students′ ability to comprehensively apply circuit knowledge to solve practical problems,and improved the students' self-learning ability and innovation consciousness.