Reactive Power Optimal Configuration Method for Smart Substation Based on Improved Optimal Coverage Method

Abstract

The invention discloses an intelligent substation reactive power optimization configuration method based on an improved optimal covering method. The method includes the steps that firstly, an annual reactive load curve is generated according to historical reactive data of an intelligent substation, and a reactive load probability curve is acquired based on the annual reactive load curve and a probability distribution principle; secondly, a region formed by the reactive load probability curve and a coordinate axis is covered with a capacitor bank and a dynamic reactive power compensation device; thirdly, an objective function is acquired by taking minimum of a mismatch area function and an investment cost function into consideration; fourthly, an optimal configuration scheme is acquired through a genetic algorithm according to the objective function. The purpose of coordinated configuration of the dynamic reactive power compensation device and the capacitor bank under the new reactive power compensation situation of the intelligent substation is effectively achieved, reactive power configuration is optimized from the probability aspect, minimum control errors are accumulated in the probability, the equipment utilization probability is increased, and the method has theoretical and guiding significance in the new construction situation of an intelligent power grid.

Description

technical field [0001] The invention belongs to the technical field of reactive power optimal configuration of smart substations, and more specifically relates to a reactive power optimal configuration method of smart substations based on an improved optimal coverage method. Background technique [0002] Smart grid is the development direction of the future power grid, covering various links such as power generation, power transmission, power transformation, power distribution, power consumption, dispatching, and communication information. Among them, the smart substation is the foundation of the smart grid and an important part of the safe and reliable operation of the entire grid. The smart grid puts forward higher requirements for power quality, line loss and voltage stability, and requires the non-function of smart substations to realize real-time local control. The use of a single group of capacitors for compensation is a bit weak, and the principle of real-time on-sit...

AI Technical Summary

Problems solved by technology

However, the above existing technologies only consider a single compensation type, and do not consider the cooperation of dynamic reactive power compensation devices and capacitors.

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