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Damping controller coordination parameter optimization method based on steepest descent method

A technology of damping controller and steepest descent method, applied in the field of power system, can solve the problem of effective interval oscillation suppression effect, and achieve the effect of improving the stability of small disturbance

Active Publication Date: 2020-07-31
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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But the inhibitory effect on interval oscillation is effective

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  • Damping controller coordination parameter optimization method based on steepest descent method
  • Damping controller coordination parameter optimization method based on steepest descent method
  • Damping controller coordination parameter optimization method based on steepest descent method

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[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0061] figure 1 It is an IEEE (Institute of Electrical and Electronics Engineers) 4-machine 2-area system diagram including wind power and photovoltaic power generation, in figure 1 On the basis of , the embodiment of the present invention provides a damping controller coordination parameter optimization method based on the steepest descent method, the specific steps are as follows:

[0062] S1. Connect the power system stabilizer and damping controller to th...

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Abstract

The invention provides a damping controller coordination parameter optimization method based on a steepest descent method. The method comprises the steps of firstly, respectively constructing a wind power plant model, a photovoltaic power station model, a PSS model and a PODC model; secondly, analyzing the influence of the PSS and the PODC on the stability of the power system by establishing a dynamic model of the power system; then, respectively constructing a target function based on the characteristic value and a target function based on the damping ratio, and constructing a multi-target function; carrying out search optimization on the multi-objective function by utilizing SDA to obtain optimal PSS and PODC parameters; and finally, verifying the optimized power system by utilizing characteristic value analysis and a dynamic time domain simulation method to obtain optimal PSS and PODC parameters, so that the small interference stability of the power system can be improved. Accordingto the invention, SDA is adopted to optimize coordination parameters of PSS and PODC, so that extra enough damping is provided for low-frequency oscillation existing in a power system, and the small-interference stability of the system is improved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a damping controller coordination parameter optimization method based on the steepest descent method. Background technique [0002] Facing the increasingly serious environmental pollution and energy shortage crisis in the world, the development and utilization of renewable energy has attracted great attention from governments of all countries. Wind energy and solar energy naturally have strong complementarity in terms of time and geography. The effective combination of the two can make up for the lack of energy utilization of their separate power generation, improve the reliability and stability of power supply, and enhance the grid's ability to support renewable energy. Energy absorption capacity. However, with the integration of large-scale wind energy and photovoltaic energy into the traditional power system, the intermittence, randomness and uncertainty of these renewa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/24
CPCH02J3/24
Inventor 和萍武小鹏赵琛杨海晶申润杰祁盼李钊方棋元郑明明
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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