LIU Jian1, WANG Jian-xin1, WANG Sen2, et al. An Improved Approach of Grounding Grid Corrosion Diagnosis by Adding Touchable Nodes[J]. High voltageapparatus, 2009, 45(4): 122-125.
LIU Jian1, WANG Jian-xin1, WANG Sen2, et al. An Improved Approach of Grounding Grid Corrosion Diagnosis by Adding Touchable Nodes[J]. High voltageapparatus, 2009, 45(4): 122-125.DOI:
To convert the uncertain branches with wide possible resistance ranges into clear branches with determined resistances
an improved approach is presented by digging and converting a few untouchable nodes into touchable nodes
and supplementing the corresponding tests.The completeness of test and the performing steps of the proposed approach are described.A genetic algorithm based method to determine the position of digging and adding touchable nodes is proposed
taking the minimum number of needed digging spots as its objective function.The coding of chromosomes is described.The ways to avoid the unfeasible solutions in the processes of initial population forming
crossover and mutation operations are discussed.The experiment on a grounding grid with sixty branches verifies the feasibility of the present approach.