A Time-Sequential Progressive Reactive Voltage Optimal Scheduling Control Method

Abstract

The invention provides a time sequence progressive type reactive voltage optimal allocation control method. A progressive time sequence from day-ahead optimization to inter-day correction and then to real-time control is carried out, the dynamic characteristic of a system is considered during optimization process, monotonic segmentation of a load is carried out with a variation trend, the optimal target functions are different from different segments, and the economy and the safety of the system are jointly considered; and meanwhile, multi-period coupling solution is carried out by using a prime-dual interior point method based on non-linear complementarity. According to the method, rolling reactive power optimization control can be carried out according to the dynamic change trend of a power grid, the problem that the current power grid state is only and optimally controlled by automatic voltage control (AVC), so that the power grid runs at a more optimal state; meanwhile, reactive optimization control is more reasonable, and the economy, the safety and the reliability of power grid running are guaranteed; and the calculation convergence of a large-scale non-linear optimization problem in which a continuous variable and a discrete variable coexist and global optimum of solution are ensured, and an important guiding significance is provided for fining reactive voltage control of the power grid.

Description

technical field [0001] The invention relates to the technical field of automation, in particular to a time-sequential progressive reactive voltage optimal scheduling control method. Background technique [0002] The power system is an electric energy production and consumption system composed of power plants, power transmission and transformation lines, power supply and distribution stations, and power consumption. Its function is to convert the primary energy in nature into electric energy through the power generation device, and then supply the electric energy to various users through power transmission, transformation and distribution. In order to realize this function, the power system also has corresponding information and control systems in various links and different levels to measure, adjust, control, protect, communicate and dispatch the production process of electric energy, so as to ensure that users obtain safe and high-quality electric energy. . Reactive power...

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Problems solved by technology

[0003] At present, the AVC automatic voltage control method is usually used for reactive power optimization of the power grid. This method only optimizes the control for the current power grid state, and cannot perform rolling reactive power optimization scheduling control according to the dynamic change trend of the power grid, resulting in frequent repetition of reactive power equipment. Problems such as the adjustment and the optimization control effect in the complete scheduling cycle are not obvious

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