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A finite-time control method for estimating and compensating for power network communication delay

A time-limited, power network technology, applied in general control systems, adaptive control, control/regulation systems, etc., to solve problems such as inability to compensate for communication delays, lack of system dynamic performance analysis results, etc.

Active Publication Date: 2020-04-10
广东润元能源科技有限公司
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Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a finite time control method for estimating and compensating communication delays in electric power networks, which solves the adverse effects caused by the inability of existing controls to compensate communication delays and lacks strict system dynamic performance analysis result

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  • A finite-time control method for estimating and compensating for power network communication delay
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  • A finite-time control method for estimating and compensating for power network communication delay

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Embodiment Construction

[0084] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0085] Please refer to figure 1 , the present invention provides a limited time control method for estimation and compensation of power network communication delay, comprising the following steps:

[0086] Step S1: according to the method for the T-S fuzzy model, construct the fuzzy model of the multi-node network of the power system;

[0087] Step S2: construct a finite-time fuzzy observer, and calculate the error limit of the delayed signal within a finite time;

[0088] Step S3: Design a fuzzy compensation controller according to the obtained error limit, so that the fuzzy model is bounded and stable within a limited time.

[0089] In an embodiment of the invention, the step S1 is specifically:

[0090] Step S11: establish a nonlinear dynamic system of power network nodes, as shown in formula (1):

[0091]

[0092] where N i is the set of all p...

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Abstract

The invention relates to an estimation and compensation finite time control method of a communication delay of a power network. The method comprises the following steps: step S1: constructing a fuzzymodel of a multi-node network of a power system according to a T-S fuzzy model method; step S2: constructing a finite time fuzzy observer, and calculating an error margin of a delay signal within a finite time; and step S3: designing a fuzzy compensation controller according to the obtained error margin, so that the fuzzy model is bounded stable within the finite time. By adoption of the estimation and compensation finite time control method provided by the invention, the bounded stability of the power system within the finite time can be achieved in the presence of network delay, and the safeoperation of the power system is ensured.

Description

technical field [0001] The present invention relates to a finite time control method for estimation and compensation of communication delay of electric power network. Background technique [0002] With the construction of new energy power generation systems, the power network presents distributed coupling characteristics. Distributed network communication can replace the traditional point-to-point communication method, which greatly reduces the cost and is widely used in the control of power networks. However, there is an unavoidable communication delay in network communication, so in the power network control, how to avoid or reduce the network communication delay is very important. Traditional network control methods cannot compensate for the adverse effects of communication delays, and lack rigorous system dynamic performance analysis results. SUMMARY OF THE INVENTION [0003] In view of this, the purpose of the present invention is to provide a limited time control m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 钟智雄林文忠张祖昌邵振华
Owner 广东润元能源科技有限公司
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