Power distribution network dynamic reactive power optimization method based on variable step size beetle antennae search algorithm

Abstract

The invention discloses a power distribution network dynamic reactive power optimization method based on a variable step size beetle antennae search algorithm. The method comprises the steps: buildinga dynamic reactive power optimization mathematic model of a power distribution network through employing the minimum network loss and the minimum capacitor switching cost as target functions; acquiring node data of the power distribution network system; initializing the position x0 of a longhorn beetle within a constraint range, and setting a variable step size parameter eta, the maximum number of iterations N and the action cost of a compensation device; randomizing the directions of the left and right beards of the longhorn beetle to establish the positions xl and xr of the left and right beards of the longhorn beetle; adjusting a control variable, and correcting a boundary-crossing state variable; calculating the odor intensity of the longhorn beetle beards; carrying out variable stepsize adjustment; and if the beetle antennae search algorithm reaches the maximum number N of iterations, stopping iteration, and outputting the final optimal reactive power compensation amount xopt and the optimal value fopt. The optimization precision of an original beetle antennae search algorithm is effectively improved, and compared with a traditional intelligent algorithm, the variable step size beetle antennae search algorithm is small in calculated amount and simple in process, and is suitable for real-time adjustment in the operation process of a power distribution network.

Description

technical field [0001] The invention relates to a reactive power control technology of an electric power system, in particular to a dynamic reactive power optimization method of a distribution network based on a variable step length beetle whisker algorithm. Background technique [0002] With the rapid development of society, the structure of distribution network is becoming more and more complex, and users have higher and higher requirements for power quality. Reactive power optimization can not only effectively reduce network losses and save operating costs, but also improve voltage quality and make distribution networks run more reliably and safely. [0003] The reactive power optimization of the distribution network is part of the optimal power flow, which refers to optimizing the adjustment mode of the reactive power control equipment to optimize some indicators in the system operation process. This traditional optimization method is usually called static reactive powe...

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Problems solved by technology

[0005] In order to effectively solve the problem of dynamic reactive power optimization in the actual operation of the distribution network, the present invention proposes a distribution system based on the variable step length beetle whisker algorithm that is suitable for real-time adjustment during the operation of the distribution network with a small amount of calculation and a simple process. Dynamic reactive power optimization method for power grid

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