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Making use of the electric network theory and the matrix theory, the fault diagnosis equations are set up in the form of sensitivity matrix. Then the method of multiple-excitation is applied to increase the number of independent equations and resolve the problem of morbid equations effectively. By introducing the micro-disposal method and the iterative algorithm, we can use the least squares approach...
Firstly, the paper analyses overall present status of failure diagnosis of grounding grids and the latest technologies. Then it studies the commonly used methods in the area at present, including the relative method, the method according to detection the ground magnetic field and electric potential difference, the method of tabu search, the micro-disposal method etc, and compares their merits and...
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