Delay Compensation of Demand Response and Adaptive Disturbance Rejection Applied to Power System Frequency Control

Hosseini, Seyyed Amir; Toulabi, Mohammadreza; Dobakhshari, Ahmad Salehi; Ashouri‐Zadeh, Alireza; Ranjbar, Ali Mohammad

doi:10.1109/tpwrs.2019.2957125

Cited by 68 publications

(14 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The upper bound structure in (9) is statedependent. In multi-area LFC, state-dependent uncertainties naturally arise since the system parameters must be aggregated into equivalent time constants and coefficients, representing the dynamics at the area level [7]- [10]. Bus dynamics are also state-dependent uncertainties according to the…”

Section: This Leads To the Lfc Problem Formulationmentioning

confidence: 99%

“…are small [6], [7]. In multi-area LFC, uncertainties naturally arise since the system parameters must be aggregated into equivalent time constants and coefficients, representing the dynamics at the area level [7]- [10]. The aggregation of dynamics creates the need to handle both parametric uncertainties and unmodelled dynamics, which are challenging for fixed-gain control [11]- [13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stable Adaptation in Multi-Area Load Frequency Control Under Dynamically-Changing Topologies

Tao

Roy

Baldi

2021

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

Multi-area load frequency control (LFC) selects and controls a few generators in each area of the power system in an effort to dampen inter-area frequency oscillations. To effectively dampen such oscillations, it is required to enhance and lower the control activity dynamically during operation, so as to adapt to changing circumstances. Changing circumstances should cover not only parametric uncertainties and unmodelled dynamics (e.g. aggregated area dynamics and bus dynamics), but also the increasing structural flexibility of modern power systems (e.g. protection mechanisms against faults and cyber-attacks, or topology reconfiguration mechanisms for demand response). As formal stability guarantees around such an attractive adaptive multi-area LFC concept are still lacking, this work proposes framework in which adaptation and switching are combined in a provably stable way to handle parametric uncertainty, unmodelled dynamics, and dynamical interconnections of the power system. Stability is studied in the Lyapunov theory sense using the standard structure-preserving modelling approach, and the resulting adaptive multi-area LFC design is validated using an IEEE 39-bus benchmark.

show abstract

Section: This Leads To the Lfc Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stable Adaptation in Multi-Area Load Frequency Control Under Dynamically-Changing Topologies

Tao

Roy

Baldi

2021

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

show abstract

“…In [26], in order to decrease frequency detection error and communication delay, a hybrid control approach was developed as a combination of centralized and distributed control methods used to control the flexible loads. By considering the load disturbances and uncertainties in system parameters, [27] proposed active disturbance rejection control to increase the frequency robustness and designed an adaptive delay compensator to decrease the impact of communication delays on the frequency stability for single-area LFC system with DR control loop. Recently, authors in [28] extended their earlier work reported in [25] in order to develop a mathematical model for sensitivity and stability analysis of the system frequency response with respect to important parameters associated with DR and virtual control loops.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, in [24], stability delay margins were obtained by trial and error simulation method rather than using an exact method. In [26,27], various compensation schemes were proposed to decrease the frequency deviation in the presence of time-delays in the DR control loop. In those studies, authors did not present any qualitative/quantitative analysis to determine the impact of the DR controls with time-delays on the delay-dependent stability of LFC-DR systems.…”

Section: Introductionmentioning

confidence: 99%

The effect of demand response control on stability delay margins of load frequency control systems with communication time-delays

KATİPOĞLU¹,

Sönmez²,

Ayasun³

et al. 2021

Turkish Journal of Electrical Engineering and Computer Sciences

View full text Add to dashboard Cite

This paper studies the effect of dynamic demand response (DR) control on stability delay margins of load frequency control (LFC) systems including communication time-delays. A DR control loop is included in each control area, called as LFC-DR system and Rekasius substitution is utilized to identify stability margins for various proportionalintegral (PI) gains and participation ratios of the secondary and DR control loops. The purpose of Rekasius substitution technique is to obtain purely complex roots on the imaginary axis of the time-delayed LFC-DR system. This substitution first converts the characteristic equation of the LFC-DR system including delay-dependent exponential terms into an ordinary polynomial. Then the well-known Routh-Hurwitz stability method is applied to find those imaginary roots and the corresponding stability delay margin known as maximal time-delay. Delay margin results indicate that the inclusion of DR control loop significantly increases stability delay margin and improves the frequency dynamic behavior of the LFC system including time-delays. Theoretical stability margins are confirmed by a proven algorithm, quasi-polynomial mapping-based root finder (QPmR) algorithm and time-domain simulations.

show abstract

“…Because the wind power and demand side load are all uncertain, sometimes the total produced power is less than the demand loads required. In this situation, the demand side response (DSR), which can control or shift the controllable loads, has become a promising smart grid technology for accommodating intermittent renewable generations (Zhu et al, 2014;Esther and Kumar, 2016;Zhu et al, 2016a;Hosseini et al, 2020). In recent years, the PEVs have drawn increasing attention to the transportation electrification and suppressed the fluctuation in renewable energy sources have been investigated in lots of literature (Kariminejad et al, 2018;Nunna et al, 2018;Liu et al, 2020;Wang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Coordinated Frequency Regulation of Smart Grid by Demand Side Response and Variable Speed Wind Turbines

et al. 2021

View full text Add to dashboard Cite

Frequency stability of the power system is impacted by the increasing penetration of wind power because the wind power is intermittent. Meanwhile, sometimes the demand side loads increase quickly to require more power than total power produced. So balancing the active power in the power system to maintain the frequency is the main challenge of the high penetration of wind power to the smart grid. This paper proposes coordination rotor speed control (RSC), pitch angle control (PAC) and inertial control (IC) to control wind turbines, together with demand side response (DSR) participating in frequency regulation to balance active power in the power system. Firstly, the model of a single area load frequency control (LFC) system is obtained, which includes variable-speed wind turbines (VSWT) and DSR containing aggregated air conditioners and plug-in electric vehicles (PEVs). Then the RSC, PAC and IC, which controls wind turbines participating in frequency regulation in the power system, are introduced, respectively. Finally, the coordination of these three methods for wind turbines in different wind speeds is proposed. Case studies are carried out for the single area LFC system with a wind farm and DSR supported grid frequency. Coordination RSC and PAC combined IC are used to control wind turbines with DSR to balance active power in the power system. The proposed method used in the power system with high penetration of wind power and fluctuation of demand load is tested, respectively. Coordinated RSC or PAC with DSR can increase penetration of wind power and reduce peak load.

show abstract

Delay Compensation of Demand Response and Adaptive Disturbance Rejection Applied to Power System Frequency Control

Cited by 68 publications

References 45 publications

Stable Adaptation in Multi-Area Load Frequency Control Under Dynamically-Changing Topologies

Stable Adaptation in Multi-Area Load Frequency Control Under Dynamically-Changing Topologies

The effect of demand response control on stability delay margins of load frequency control systems with communication time-delays

Coordinated Frequency Regulation of Smart Grid by Demand Side Response and Variable Speed Wind Turbines

Contact Info

Product

Resources

About