Design And Development For Fault Restoration System In Hegang District

The online fault restoration system for power grid is used to find the available power for the blackout area quickly, to confirm the feasible path, to realize the effective supply for the unfaulted outage area. It is of great significance in improving the fault processing efficiency. Especially under the smart grid environment, self-heal is as one of the essential feature, it means that practical application of fault recovery has become the an issue that must address. This dissertation will get down to research from the following several aspects, including the completeness and rapidity of the path search, the redundancy of operation rules and the maintainability of fault restoration system, to study the practical and online power grid fault restoration, whose main content are as follow:Aiming for searching multiple paths quickly, the search strategy based on the vertex splitting is prompted. The power grid is equivalent to vertex-side model. According to the different degrees of the vertexes, adopt the vertex deleting, eliminating, splitting strategy; in consideration on the complex network, setting the path constraints and deleting the long paths to realize the recovery way search. Judge the path whether satisfy the security constraints or not. The effectiveness of the algorithm was demonstrated by a practical calculation in Hegang.To reduce the redundancy of rules and improve the application flexibility of the intelligent electric switching operation system, a kind of rules mining strategy has been proposed based on the rough sets. On account of the operation tickets of the grid, generate the operation decision table of classification. Adopting the equivalent matrix to conduct attributes reduction in order to obtain the optimal reductions of the table and then to extract operation rules. The validity of the proposed method is verified through arithmetic examples of a practical area network.According to the actual requirement of power grid, summarizing the above research results, design the practical online power grid fault restoration system.