Nonlinear coordinated control of STATCOM and generator excitation for multi‐machine power systems based on improved multi‐objective holographic feedback

Li, Xiaocong; Chen, Dengyi

doi:10.1002/tee.22707

Cited by 7 publications

(10 citation statements)

References 18 publications

(21 reference statements)

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“…Theorem 1. For a two-input system, an input-output pair (u, y) is selected for which the relative degree is one order, and the system (equation (1)) can be converted into the following form:…”

Section: Passivity and Design Methodsmentioning

confidence: 99%

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An Improved Adaptive Passive Coordinated Control for Generator Excitation and STATCOM

Zhang

Yuan-hui

et al. 2021

Mathematical Problems in Engineering

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An improved adaptive backstepping passive coordinated control strategy is proposed to deal with the uncertainty of damping coefficient and mechanical power and external disturbance on the system stability. A nonlinear coordinated controller of generator excitation and STATCOM (static synchronous compensator) is designed to improve its adaptability. The adaptive estimation laws of damping coefficient and mechanical power are designed by using I&I (immersion and invariance) adaptive control to improve the adaptive ability of the controller. Based on the backstepping recursive method, the control law of STATCOM is designed and combines the passivity theory, thus acquiring the control law of generator excitation. In the backstepping design, the derivative of the virtual control input and external disturbance are considered to be uncertain, and the nonlinear damping algorithm is introduced to reduce the “calculation explosion.” Simulation results show that the designed controller improves the stability of the power system and shows strong adaptability and robustness.

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Section: Passivity and Design Methodsmentioning

confidence: 99%

“…At present, the scale and structure of power grid is more and more large and complex, and the transmission system has developed into a large capacity, long-distance, and ultrahigh voltage transmission form [1,2]. e following problem is the stability of the power system.…”

Section: Introductionmentioning

confidence: 99%

An Improved Adaptive Passive Coordinated Control for Generator Excitation and STATCOM

Zhang

Yuan-hui

et al. 2021

Mathematical Problems in Engineering

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“…C m is selected by pole placement method. More information about how to select the parameters of C m is detailed discussed in Refs [21,22]. In addition, trial‐and‐error is another effective method to get C m .…”

Section: Mincc Control Law Designmentioning

confidence: 99%

Torsional Vibrations Control of Double‐Ended Driving and Dual‐Excited Turbo‐Generator Shafts Based on Multi‐Index Nonlinear Control

Qin

et al. 2021

IEEJ Transactions Elec Engng

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Non-member Yejie Tian, Non-member The problem of shafting torsional vibrations has been increasingly emerging due to the increasing capacity of turbo-generator and the complexity of power grid. Therefore, how to reduce the torsional vibration of the turbo-generator shaft and improve the stability of the power system has become the focus of our research. First, in order to solve the problem and alleviate the torsional vibrations of turbo-generator shafts, this paper proposed a new shafting structure model of Double-ended Driving and Dual-Excited Turbo-Generator set (DDDETG). A static excitation mode is used for the excitation of the DDDETG and the mechanical power is supplied symmetrically and synchronously from both ends of the generator rotor. Then, in order to improve the output characteristic of the generator and further suppress the torsional vibrations of the turbo-generator shafts, combined with the nonlinear control design method of partial feedback linearization, a Multi-Index Nonlinear Coordinated Control (MINCC) strategy for the double-ended driving and dual-excited turbo-generator is proposed to ensure good dynamic and static state performances of each state in the system. Finally, the simulation results on a single-machine infinite bus system demonstrate the effectiveness of the proposed control strategy. In addition, this paper compares the performance of DDDETG and the traditional Single-ended Drive and Single-Excited Turbo Generator (SDSETG), the simulation results show that the restraint effect of the DDDETG structure on shafting torsional vibrations is more obvious under the proposed control strategy.

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“…The transient stability of the power system is the kernel issue to ensure the safe operation of the power grid. The Flexible AC Transmission System (FACTS) devices can enhance the transient stability of transmission system economically and effectively [1]. Among them, the static synchronous compensator (STATCOM) is a FACTS device based on power electronic converter, which has the characteristics of improving the voltage quality, regulating the grid reactive power, and improving the transient stability of the power system [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…In the generator excitation and STATCOM coordinated control system, multiple parameter uncertainties and external disturbances are the main factors affecting the transient stability of power systems [6][7][8][9]. Li et al [10] designed a coordinated control strategy for STATCOM and generator excitation based on the objective holographic feedback method, and achieved effective tracking and control of the dynamic and static performance of the six state variables. While the method did not take into account the damping effect of winding and did not fully consider the a Correspondence to: Lei Zhang.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Backstepping Robust Coordinated Control with Consideration of Parameter Uncertainty for Generator Excitation and STATCOM

Zhang

Yuan-hui

et al. 2021

IEEJ Transactions Elec Engng

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In order to improve the transient stability of the coordinated control system of generator excitation and static synchronous compensator (STATCOM), an adaptive backstepping robust coordinated control strategy based on immersive and invariant (I&I) adaptive backstepping control and L2-gain control is proposed with consideration of the multiple uncertain parameters and external disturbance in the system modeling. The parameter adaptive law and coordination of control law are designed independently. The parameter adaptive laws for the two uncertain parameters: damping coefficient and mechanical power in the system are designed simultaneously by adopting I&I adaptive control method; the L 2 -gain control is introduced in the backstepping design to eliminate the effects of the external disturbance on the system transient stability. The results of simulation show that the proposed strategy has strong adaptability to parameter fluctuations and robustness to external disturbances.

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Nonlinear coordinated control of STATCOM and generator excitation for multi‐machine power systems based on improved multi‐objective holographic feedback

Cited by 7 publications

References 18 publications

An Improved Adaptive Passive Coordinated Control for Generator Excitation and STATCOM

An Improved Adaptive Passive Coordinated Control for Generator Excitation and STATCOM

Torsional Vibrations Control of Double‐Ended Driving and Dual‐Excited Turbo‐Generator Shafts Based on Multi‐Index Nonlinear Control

Adaptive Backstepping Robust Coordinated Control with Consideration of Parameter Uncertainty for Generator Excitation and STATCOM

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