Multi-zone automatic generation control coordination method based on differential game theory

A technology of automatic power generation control and coordination method, which is applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of not giving regional adjustment power distribution method, and unable to guarantee inter-regional fairness, etc.

Inactive Publication Date: 2013-07-10
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The paper [2] uses the multi-objective optimization method based on linear weighting to obtain the optimal frequency deviation coefficient for the set target, so as to allocate the adjustment power of each area, but the artificially set weight coefficient cannot guarantee the fairness among the areas.
The paper [3] points out that it is urgent to...

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  • Multi-zone automatic generation control coordination method based on differential game theory
  • Multi-zone automatic generation control coordination method based on differential game theory
  • Multi-zone automatic generation control coordination method based on differential game theory

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Embodiment

[0094] In order to facilitate the understanding of the present invention, the following description is made in conjunction with the accompanying drawings.

[0095] Taking the two-region interconnected power grid as an example, the control process based on the differential game theory is as follows: figure 2 As shown, figure 2 It is a two-area interconnected system model diagram based on differential game control. Box C in the figure represents a differential game controller. The meaning of each parameter in the figure is: u 1 And u 2 The coordinated control strategy given by the game controller, namely the AGC unit power adjustment command ΔP c1 And ΔP c2 , R 1 And r 2 Is the primary frequency modulation error coefficient, T G1 And T G2 Is the governor time constant, ΔX g1 And ΔX g2 Is the change amount of the governor valve position, T T1 And T T2 Is the steam capacity time constant, ΔP g1 And ΔP g2 Change in output for prime mover, ΔP L1 And ΔP L2 Is the power disturbance, that...

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Abstract

The invention discloses a multi-zone automatic generation control coordination method based on the differential game theory. The method comprises the following steps: step 1, a dynamic model of zone interconnected network automatic generation control (AGC) is established; step 2, traditional AGC amount based on a proportion integration link is replaced by AGC amount based on the differential game theory and a coordination control model, based on the differential game theory, of zone interconnected network automatic generation is established; step 3, the coordination control model of the zone interconnected network automatic generation is solved through the linear quadratic type differential game theory and the obtained Nash equilibrium strategy serves as automatic generation control amount of multiple zones; and step 4, compared with other existing control methods, the multi-zone automatic generation control coordination method based on the differential game theory enables distribution of frequency modulation among the zones to be fair and convictive. The multi-zone automatic generation control coordination method based on the differential game theory has the advantages of being strong in robustness and the like.

Description

Technical field [0001] The invention relates to an automatic control of a power system, in particular to a multi-zone automatic power generation control coordination method based on differential game theory. The control coordination method is suitable for large-scale grid connection of intermittent power sources such as wind power, and more and more tie lines will appear. In the case of more inter-regional power support, how to formulate a fair and just coordinated operation plan. Background technique [0002] Automatic generation control (AGC), as an important means to ensure the stability of grid frequency, has been studied in depth for a long time. These studies are based on optimal control, adaptive control, robust control, artificial intelligence and other methods to improve the ability of AGC to track load changes and respond to system parameter changes. However, there are relatively few studies on multi-region AGC coordinated operation mechanisms. At present, China's regi...

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Application Information

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IPC IPC(8): H02J3/46
Inventor 陈皓勇叶荣卢润戈
Owner SOUTH CHINA UNIV OF TECH
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