Reactive optimal online control method for analyzing mixed economic pressure difference and sensitivity

Abstract

The invention discloses a reactive optimal online control method for analyzing mixed economic pressure difference and sensitivity. The reactive optimal online control method comprises the steps of preparation of power grid data, calculation of an economic pressure difference optimal initial value, online sensitivity analysis and calculation, a P-Q load flow calculation method considering SVC (Static Var Compensator) static model, a construction method of a dynamic reactive power source, an iteration convergence criterion method and real-time automatic equipment control. With the adoption of the method, by monitoring the running state of a power grid and combining the actual running condition of the power grid, switching of a capacitor and an electric reactor equipment switch in a reactive optical control equipment, fine control on reactive power of SVC dynamic reactive compensation equipment and power plant reactive power generation regulation are realized, an optimization algorithm is improved, a new iteration solving mode is put forward, the dynamic reactive power source is built to carry out practical treatment, a solving method is selected for calculation of a layered node optimized voltage, and an iteration convergence criterion is improved, thus improving the convergence and the practicability of the economic pressure difference optimization algorithm.

Description

technical field [0001] The invention relates to a reactive power optimization online control method based on mixed economic differential pressure and sensitivity analysis, which belongs to the field of automatic control of electric power systems. Background technique [0002] In recent years, people have done a lot of research on online control methods of reactive power optimization, and achieved a lot of results. Reactive power optimization online control methods are mainly based on traditional nonlinear programming methods and artificial intelligence methods, but because reactive power optimization itself is a nonlinear solution problem, and there are many variables, continuous and discrete variables are combined, so for reactive power optimization algorithms and The actual application effect is still worthy of study. The economic differential pressure method is a method of reactive power optimization on-line control. The traditional economic differential pressure algorit...

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Problems solved by technology

However, there is no clear optimization process for the algorithm to realize the economic pressure difference power flow, and no clear strategy for the specific realization of optimal control, and it is impossible to determine the optimal voltage value of the layered nodes

Moreover, the traditional economic differential pressure algorithm is only suitable for the situation where there are a large number of dynamic reactive power compensation devices in the power grid, which is often difficult to achieve at the current technical level. It is a reactive power optimization algorithm with strong forward-looking and weak practicability.

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