WAMS based robust HVDC control considering model imprecision for AC/DC power systems using sliding mode control

Weng, Hua; Xu, Zheng

doi:10.1016/j.epsr.2012.08.008

Cited by 18 publications

(19 citation statements)

References 27 publications

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“…In this article, the values of ∆ω min , ∆ω max , ACE max and ∆P DC ref, max in (i) -(iii) are set to be −0.1 Hz, 0.1 Hz, 0.05 p.u. and 0.1 p.u., respectively, according to the references [25], [30], [31], [32]. For (iv), as mentioned earlier, the (absolute) value of MFD should reach 0.8 Hz for a disruptive FDI attack from the grid code in [28].…”

Section: B Disruptive Stealthy Fdi Attack Strategiesmentioning

confidence: 99%

False Data Injection Attacks on Hybrid AC/HVDC Interconnected Systems With Virtual Inertia—Vulnerability, Impact and Detection

2020

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Power systems are moving towards hybrid AC/DC grids with the integration of HVDC links, renewable resources and energy storage modules. The load frequency control (LFC) of tomorrow has to consider the complex interactions between these components. Meanwhile, more attention should be paid to cyber security concerns as the LFC loop highly depends on data communications which may be exposed to cyber attacks. In this regard, this article aims to analyze the false data injection (FDI) attacks on the AC/DC interconnected LFC system with inertia emulation and develop advanced diagnosis tools to reveal their occurrence. We build an optimization-based framework for the purpose of vulnerability analysis. Considering the attack impact on frequency stability, it is shown that the multi-area LFC system with parallel AC/DC links and emulated inertia by storage devices is more vulnerable to FDI attacks, compared to the one without inertia emulation and the normal AC system. We then propose a detection approach to detect and isolate each FDI intrusion with a sufficient fast response, and even recover the attack value. In addition to theoretical results, the effectiveness of the proposed method is validated through simulations on the two-area AC/DC interconnected LFC system with inertia emulation capabilities. INDEX TERMS AC/DC system, load frequency control, inertia emulation, false data injection attacks

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Section: B Disruptive Stealthy Fdi Attack Strategiesmentioning

confidence: 99%

False Data Injection Attacks on Hybrid AC/HVDC Interconnected Systems With Virtual Inertia—Vulnerability, Impact and Detection

2020

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“…While the power system is a nonlinear system, when the system is far away from the equilibrium point under serious disturbance or under the operation mode alternation, this kind of controllers has the inevitable limitation to maintaining the stability of the system. In order to solve the nonlinearity problem of the system, some researchers have put forward a nonlinear method to design the HVDC supplementary controller, such as state feedback linearization optimal control [6,7], sliding mode control [8], and fuzzy control [9,10]. The application of these controllers has good robustness in HVDC supplementary control.…”

Section: Introductionmentioning

confidence: 99%

Design of nonlinear coordinate damping controller for HVDC and SVC based on synergetic control

Zou

Dong

Liu

2019

IEEJ Transactions Elec Engng

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This article presents a novel nonlinear coordinate damping controller (NCDC) for high-voltage direct current (HVDC) and static var compensator (SVC) based on synergetic control theory, which can improve the stability of interarea power system and multi-infeed HVDC system by quickly changing the transmission power of HVDC and reactive power of SVC. The traditional control design of HVDC and SVC can improve the stability, but there may be a negative interaction between the controllers of HVDC and HVDC or HVDC and SVC. Furthermore, the power system is a strong nonlinear system, and the controller designed by a linearized model may reduce its performance. To solve these problems, this article first constructs a unified macro variable and manifold, which contains the model of HVDC and SVC. The manifold sets the deviation value of the center of inertia (COI) frequency of the two systems connected by HVDC to zero. Then, a nonlinear HVDC and SVC coordinated controller is derived based on the synergetic control theory. The global stability of the controller is proven by the Lyapunov theorem. Finally, the simulation results in a two-area power system and a multi-infeed system using the power systems computer aided design (PSCAD) show the effectiveness and superiority of the proposed controller.

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“…With continuous research of DC power modulation by scholars at home and abroad, it has developed from modulating one-terminal AC system performance, to modulating two or multi-terminal AC/DC parallel system. The modulation strategies have also developed from traditional linear control to variable structure control [5], robust control [6], transient energy functions [7], and other coordinated control strategies. However, these controls are all based on specific operating state and fixed system model.…”

Section: Introductionmentioning

confidence: 99%

Markovian switching model and non‐linear DC modulation control of AC/DC power system

Liu

Miao

Zhai

et al. 2017

IET Generation, Transmission & Distribution

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WAMS based robust HVDC control considering model imprecision for AC/DC power systems using sliding mode control

Cited by 18 publications

References 27 publications

False Data Injection Attacks on Hybrid AC/HVDC Interconnected Systems With Virtual Inertia—Vulnerability, Impact and Detection

False Data Injection Attacks on Hybrid AC/HVDC Interconnected Systems With Virtual Inertia—Vulnerability, Impact and Detection

Design of nonlinear coordinate damping controller for HVDC and SVC based on synergetic control

Markovian switching model and non‐linear DC modulation control of AC/DC power system

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