Online determination of the optimal grid operation mode of urban high-voltage power grid

urban power grid;  Online;  Optimization;  Enumeration method

Starting from the actual characteristics of urban high-voltage power grid, the reduced-order enumeration method is used to determine the online operation grid of urban high-voltage power grid. The state of the switch is expressed as an integer variable, and the combination of all switching states constitutes a complete enumeration of the possible operation modes of the grid; After considering various practical grid operation constraints such as relay protection, the number of possible operation modes is greatly reduced; The accurate calculation of a limited number of operation modes ensures the optimality of the results and the rapidity of the calculation. This idea has been used to determine the post-accident recovery scheme, the current operation mode and the optimal grid operation scheme at any time in the future in the "intelligent decision support system of urban power grid". The actual trial operation of Nanyang urban power grid shows the effectiveness and practicality of the proposed method.