CN103199552A - Rapid inhibition method for stand-alone infinite electric system chaos oscillation - Google Patents
Rapid inhibition method for stand-alone infinite electric system chaos oscillation Download PDFInfo
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- CN103199552A CN103199552A CN2013100892127A CN201310089212A CN103199552A CN 103199552 A CN103199552 A CN 103199552A CN 2013100892127 A CN2013100892127 A CN 2013100892127A CN 201310089212 A CN201310089212 A CN 201310089212A CN 103199552 A CN103199552 A CN 103199552A
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Abstract
The invention provides a rapid inhibition method for stand-alone infinite electric system chaos oscillation. The method includes the steps that a mechanism of a stand-alone infinite electric system producing a chaos oscillation phenomenon is firstly given, and a condition of the system producing the nonlinearity chaos oscillation is researched. Rapid inhibition for the stand-alone infinite electric system chaos oscillation is achieved by utilizing of the simplest self-adaptive controller, and correctness of conclusions is verified through experiments.
Description
Technical field
The present invention relates to the infinitely great Chaos Oscillation of Power System of unit and suppress method fast, belong to the electrical engineering field.
Background technology
The guarantee that electric power system is normally carried out as people's daily life and the national economic development, chaos is complicated electric power system contingent a kind of oscillatory occurences in service, in case take place and to constitute serious threat to the safe and stable operation of system, under specific running status, non-linear phenomenas such as saddle knot bifurcated, overcritical, subcritical, Hopf bifurcated, doubling time bifurcated and chaos in the infinitely great electric power system of unit, have also been found.
In order to ensure the safe operation of electric power system, this paper has provided the infinitely great electric power system second nonlinear of unit model, has analyzed the mechanism that causes system the chaotic oscillation phenomenon to occur, and the system of having studied produces vibration Non-Linear Ocsillation condition.
For the research of the infinitely great Chaos Oscillation of Power System of unit, people have proposed the measure of a lot of elimination resonance from different angles, have obtained a lot of achievements in research.The measure of different elimination resonance has been proposed.And the self-adaptation control method that the infinitely great electric power system chaos of unit is suppressed rarely has report.
The present invention adopts an adaptive controller the simplest and easy, can realize the quick inhibition of the infinitely great Chaos Oscillation of Power System of unit.
Summary of the invention
The invention provides the infinitely great Chaos Oscillation of Power System of a kind of unit and suppress method fast, this method at first provides the mechanism that the chaotic oscillation phenomenon appears in the infinitely great electric power system of unit, has studied the condition of system's Non-Linear Ocsillation.And utilize an adaptive controller the simplest to realize the quick inhibition of the infinitely great Chaos Oscillation of Power System of unit, verify the correctness of conclusion by experiment.
The technical scheme concrete steps that the present invention proposes comprise:
The Mathematical Modeling of the infinitely great electric power system of unit is:
In the formula
Be corner,
Be moment of inertia;
Be relative rotation speed;
Be electromagnetic torque;
Be mechanical torque;
Be coefficient of friction.
Wherein, electromagnetic torque
Can be expressed as:
In the formula,
Be the generator builtin voltage,
Be wireless bus voltage,
Be generator and transformer additional impedance.
Mechanical torque
Can be expressed as:
By (2) formula and (3) formula, equation (1) can be changed into:
Setting the most easy adaptive controller of the infinitely great Chaos Oscillation of Power System inhibition of unit is:
(5)
Wherein,
Be positive constant, utilize above-mentioned adaptive controller can realize the quick inhibition of the infinitely great Chaos Oscillation of Power System of unit.
Technique effect of the present invention: the technical scheme that the infinitely great Chaos Oscillation of Power System of above-mentioned a kind of unit that the present invention proposes suppresses, this method at first provide the mechanism that the chaotic oscillation phenomenon appears in the infinitely great electric power system of unit, and the system of having studied produces the condition of Non-Linear Ocsillation.And utilize an adaptive controller the simplest to realize the quick inhibition of the infinitely great Chaos Oscillation of Power System of unit, verify the correctness of conclusion by experiment.
Description of drawings
Fig. 1 is the infinitely great NETWORK STRUCTURE PRESERVING POWER SYSTEM figure of unit.
Fig. 2 is system's (4) time-domain response and chaos attractor thereof
(a) system's chaos attractor (b) vibration time-domain response.
Fig. 4 is embodiment 1 resonance oscillations Adaptive Suppression
Response.
Embodiment
Embodiment:
The technical scheme concrete steps that the present invention proposes comprise:
The infinitely great electric power system block diagram of unit as shown in Figure 1, its Mathematical Modeling is:
In the formula
Be corner,
Be moment of inertia;
Be relative rotation speed;
Be electromagnetic torque;
Be mechanical torque;
Be coefficient of friction.
In the formula,
Be the generator builtin voltage,
Be wireless bus voltage,
Be generator and transformer additional impedance.
By (2) formula and (3) formula, equation (1) can be changed into:
Work as parameter
The time, system (4) chaos attractor and time-domain response thereof occur respectively shown in Fig. 2 (a) and (b).
Setting the most easy adaptive controller of the infinitely great Chaos Oscillation of Power System inhibition of unit is
(5)
Wherein,
For the adaptive updates rule also can be expressed as
Wherein,
Be positive constant, when
The time, utilizing above-mentioned adaptive controller, it suppresses the result as shown in Figure 3, parameter
The automated response result as shown in Figure 4.
From Fig. 3, Fig. 4 as can be seen, this kind said method can effectively suppress the chaotic oscillation phenomenon of unit electric power system.
The electric power output result that this method is stable is good.Use the result to show that this method has the good restraining degree for the noise level in the unit electric power system and harmonic wave, compare with similar unit electric power system, can obtain better electric power output effect.
Claims (3)
1. the infinitely great Chaos Oscillation of Power System of unit suppresses method fast, it is characterized in that: this method at first provides the mechanism that the chaotic oscillation phenomenon appears in the infinitely great electric power system of unit, the system of having studied produces the condition of non-linear chaotic oscillation, and utilize an adaptive controller the simplest to realize the quick inhibition of the infinitely great Chaos Oscillation of Power System of unit, verify the correctness of conclusion by experiment.
2. method according to claim 1 is characterized in that: the Mathematical Modeling of the infinitely great electric power system of unit is:
In the formula
Be corner,
Be moment of inertia;
Be relative rotation speed;
Be electromagnetic torque;
Be mechanical torque;
Be coefficient of friction; Wherein, electromagnetic torque
Can be expressed as:
In the formula,
Be the generator builtin voltage,
Be wireless bus voltage,
Be generator and transformer additional impedance; Mechanical torque
Can be expressed as:
(3)
By (2) formula and (3) formula, equation (1) can be changed into:
3. method according to claim 1 is characterized in that: the infinitely great Chaos Oscillation of Power System of its unit suppresses the most easy adaptive controller and is
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106647277A (en) * | 2017-01-06 | 2017-05-10 | 淮阴工学院 | Self-adaptive dynamic surface control method of arc-shaped mini-sized electromechanical chaotic system |
Citations (3)
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---|---|---|---|---|
CN1734878A (en) * | 2005-07-18 | 2006-02-15 | 西安交通大学 | Control method for restraining oscillate based on mixed electric power filter |
CN102035211A (en) * | 2010-10-26 | 2011-04-27 | 国家电网公司 | Method, device and system for inhibiting low-frequency oscillation of power system |
CN102496945A (en) * | 2011-12-07 | 2012-06-13 | 天津理工大学 | Passive control method of four-order chaotic power system |
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2013
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1734878A (en) * | 2005-07-18 | 2006-02-15 | 西安交通大学 | Control method for restraining oscillate based on mixed electric power filter |
CN102035211A (en) * | 2010-10-26 | 2011-04-27 | 国家电网公司 | Method, device and system for inhibiting low-frequency oscillation of power system |
CN102496945A (en) * | 2011-12-07 | 2012-06-13 | 天津理工大学 | Passive control method of four-order chaotic power system |
Non-Patent Citations (2)
Title |
---|
王少夫: "电力***混沌振荡分析及其自适应控制", 《中国优秀硕士学位论文全文数据库 工程科学Ⅱ辑》 * |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106647277A (en) * | 2017-01-06 | 2017-05-10 | 淮阴工学院 | Self-adaptive dynamic surface control method of arc-shaped mini-sized electromechanical chaotic system |
CN106647277B (en) * | 2017-01-06 | 2019-06-11 | 淮阴工学院 | The adaptive dynamic surface control method of arc microelectromechanicpositioning chaos system |
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Application publication date: 20130710 |