Optimal power flow optimization model taking consideration of flexible electric power load

Abstract

The present invention discloses an optimal power flow optimization model taking the consideration of a flexible electric power load. The model takes the consideration of both benefits of a power supplier and a user, and the user can achieve power shortage cost minimization while generation cost minimization is achieved. The implementation of the model mainly comprises the three steps of: 1) employing a classic OPF model to establish a traditional power system optimal power flow model by taking generation cost minimization as a target; 2) on the basis of the traditional optimal power flow model, taking the consideration of power shortage cost minimization of a user side, and performing optimization of the optimal power flow model; and 3) employing an improved genetic algorithm to solve theoptimal power flow model. The interruption load cost and the power failure time cost of the user side are added into the optimal power flow model to allow a finally solved optimal power flow result tobe more accurate and to be more consistent with an actual situation. The optimal power flow optimization model taking consideration of the flexible electric power load takes the consideration of thegeneration cost of the power supplier side and the power shortage cost of the user side to allow the power supplier and the user to both achieve the cost minimizing purposes.

Description

technical field [0001] The invention belongs to the field of power system analysis, in particular to an optimal power flow optimization model considering flexible power loads. Background technique [0002] With the advent of the global energy crisis, a large number of new technologies and new energy sources have been continuously applied in the new generation of smart grids. Renewable energy sources, such as wind energy and solar energy-based power generation technologies, are constantly developing and expanding. Although the development of renewable energy can solve the problem of high pollution of fossil energy and the energy crisis brought about by the decreasing fossil energy, its uncertainty has brought great challenges to the operation of the power system. Power system power flow optimization is an important means to ensure safe and reliable operation of the power grid. Traditional optimal power flow models are generally constructed with the goal of minimizing system o...

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Problems solved by technology

With the continuous access of distributed power to the power grid, traditional loads are difficult to meet the requirements for safe and stable operation of the power grid. At this time, flexible power loads emerge as the times require. With flexible loads joining the power grid, the traditional optimal power flow model is no longer applicable. Therefore, the patent of the present invention proposes an optimal power flow optimization model of the power system considering the user-side flexible power load, which ensures that the power supply side and the user simultaneously achieve the goal of cost minimization

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