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Droop control coefficient optimization method

A technology of controlling coefficients and optimization methods, applied in sustainable manufacturing/processing, climate sustainability, energy industry, etc., can solve problems such as not being able to see the optimal value of parameters, and achieve a robust effect

Inactive Publication Date: 2015-09-30
SHANGHAI DIANJI UNIV
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Problems solved by technology

However, the small-signal dynamic model of the microgrid can only obtain the approximate range of the control parameters, but cannot obtain the optimal value of the parameters. Therefore, it is urgent to propose an effective optimization method for the optimization of the droop control coefficient.

Method used

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as figure 1 As shown, the present invention provides a droop control coefficient optimization method, comprising:

[0030] Step S1, establishing a micro-grid control model, preferably, the micro-grid control model can be established by adopting droop control and voltage-current double-loop control of the distributed power inverter in the micro-grid, so as to realize fast and accurate power distribution;

[0031] Step S2, establishing a small-signal dynamic model of the microgrid control model, and obtaining the value range of the droop control coefficient according to the small-signal dynamic model; preferably, using the eigenvalue and sensitivity method according to the small-signal dynamic model Obtain the value ran...

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Abstract

The invention provides a droop control coefficient optimization method. The method is realized by using an intelligent-control PSO-IHS (Particle Swarm Optimization-Improved Harmony Search) hybrid algorithm based on a micro-grid control model and a small-signal dynamic model. The PSO-IHS hybrid algorithm can effectively escape from local optimum to quickly find the global optimum, and is higher in robustness. The PSO-IHS hybrid algorithm is adopted for optimization, so that the optimal value of a droop control coefficient can be obtained, the method is an effective droop control coefficient optimization method, and the operation of a micro-grid can be more stable and efficient.

Description

technical field [0001] The patent of the present invention relates to the field of micro-grid control system and intelligent control, and is mainly designed for the droop coefficient optimization problem of droop control in micro-grid. Background technique [0002] As the microgrid has become an important auxiliary means to solve many problems in the power system in some developed countries, whether the microgrid is connected to the grid or operated independently, it can achieve fast and accurate power distribution while maintaining stable voltage amplitude and frequency, and in the mode Ensuring that the disturbance oscillation is within an acceptable range during the switching process is the difficulty and focus of the coordinated control of the microgrid, that is, the coordinated control of the microgrid becomes particularly important. [0003] According to the plug-and-play and "equal" control idea and design concept, the voltage amplitude and frequency droop control are...

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Application Information

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IPC IPC(8): H02J3/38
CPCY02P80/14
Inventor 陈丽娟王致杰
Owner SHANGHAI DIANJI UNIV
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