The Application Software Design & Its Realization Of Anti-fault Performance Evaluation For Electric Distribution Grids

The anti-fault performance reflects the ability of the electric distribution grids when disaster accident happens. The evaluation of anti-fault permance for the electric distribution girds can provide reference for the planning, working and expansion of power grids. The algorithm and application software of anti-fault performance evaluation for distribution girds are realized in the paper, the following are the main work:In order to reflect the influence due to the model of loads for the anti-fault performance of the electric distribution grids,the uncertainty of loads are taken into consideration. A set of indexes to evaluate the anti-fault performance of distribution girds are redefined.Considering the variability of the loads in the distribution grids, the load curves are made into several sections to realize the evaluation of anti-fault performance under the varying loads. The comprehensive index curves can reflect the law of anti-fault performance with the time clearly.The algorithm of anti-fault performance evaluation for the electric distribution girds considering the load model is realized. Its main steps are the establishment of model,restoration of sound area, static security degree calculation,network restructure,indexes calculation and evaluation results display. The scheme of the minimum load shedding network restructure can ensure the indexes are optimal.The application software including the above work is programmed by VC++6.0,on which the proposed indexes and methods are tested and verified showing the feasibility.