Coordinative optimization control method based on AGC and AVC

Abstract

The invention discloses a coordinative optimization control method based on AGC and AVC. The method includes: selecting a power grid area controlled by AGC and AVC in a coordinative manner, setting power grid basic parameters, and initiating various particle parameters to produce an initial swarm; selecting a control target and constraint conditions, calculating the tidal currents of the selected power grid area, and determining the new positions and speed information of particles; introducing inertia weight and contraction factors to improve an initial particle swarm algorithm, performing particle swarm optimization calculation on the particles in the second step to obtain the optimized swarm; performing hybrid mutation on the optimized particles obtained in the third step, updating the new particles, and calculating the fitness function values of the particles before and after the mutation; performing simulated annealing attenuation on the particles obtained in the fourth step, and performing a new round of tidal current calculation; judging convergence conditions, and outputting optimization control results. The method has the advantages that the problems of AGC and AVC coordinative optimization control are solved, system tidal currents are optimized, and power grid frequency and voltage quality are improved.

Description

technical field [0001] The invention relates to a coordinated optimization control method based on AGC and AVC. Background technique [0002] At present, my country's power grid mainly uses automatic generation control (AGC) and automatic voltage control (AVC) to adjust the active power and reactive power of the power grid respectively to maintain the stability of frequency and voltage. In the power grid, there is a weak coupling relationship between active power and reactive power. At present, the control of AGC and AVC is mostly designed based on the decoupling of active power and reactive power. They adjust the frequency and voltage of the power grid respectively, without taking into account Interaction between regulation of active frequency and regulation of reactive voltage. The adjustment of AGC affects the control effect of AVC, thus causing the adjustment of AVC; and the adjustment of AVC will affect the control effect of AGC, thus causing the adjustment of AGC. Th...

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Problems solved by technology

In the power grid, there is a weak coupling relationship between active power and reactive power. At present, the control of AGC and AVC is mostly designed based on the decoupling of active power and reactive power. They adjust the frequency and voltage of the power grid respectively, without taking into account Interaction between regulation of active frequency and regulation of reactive voltage

The adjustment of AGC affects the control effect of AVC, thus causing the adjustment of AVC; and the adjustment of AVC will affect the control effect of AGC, which in turn causes the adjustment of AGC

This causes the reciprocating adjustment of AGC and AVC, which not only reduces the working efficiency of the control device, but also affects the normal operation of the power grid.

The lack of coordination between AGC and AVC will cause adverse effects on the safety and stability of the power grid, and affect the economy and power quality of the power grid

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