A Frequency Regulation Strategy for Wind Power Based on Limited Over-Speed De-Loading Curve Partitioning

Zhang, Xu; Zha, Xiaobing; Yue, Shuai; Chen, Yunlong

doi:10.1109/access.2018.2825363

Cited by 60 publications

(39 citation statements)

References 14 publications

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“…In line with PV installations, wind turbines also work in the MPP according to the wind speed v w . As a consequence, the de-loading technique is considered as a solution to provide additional active power in imbalanced situations with wind turbines, by operating them in a suboptimal point through the de-loaded control mode [87]. Wind turbines have two different possibilities to operate with the deloading technique (refer to Figure 8) [32]: (i) pitch angle control and (ii) overspeed control.…”

Section: Wind Power Plant Frequency Control Strategiesmentioning

confidence: 99%

“…When this additional power ΔP is provided, the pitch angle has to be reduced from β 1 to β 0 . The overspeed control increases the rotational speed of the rotor, shifting the supplied power P del towards the right of the maximum power P MPP (Figure 8(b)) [87,92,93]. As in the pitch-angle control, P del is below P MPP [71].…”

Section: Wind Power Plant Frequency Control Strategiesmentioning

confidence: 99%

“…As in the pitch-angle control, P del is below P MPP [71]. When the additional power ΔP is supplied, the rotor speed has to be reduced from Ω del to Ω MPP , releasing kinetic energy [39,87,92,93].…”

Section: Wind Power Plant Frequency Control Strategiesmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Virtual Inertia Techniques for Renewable Energy-Based Generators

Fernández‐Guillamón¹,

Gómez‐Lázaro²,

Muljadi³

et al. 2021

Renewable Energy - Technologies and Applications

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Over recent decades, the penetration of renewable energy sources (RES), especially photovoltaic and wind power plants, has been promoted in most countries. However, as these both alternative sources have power electronics at the grid interface (inverters), they are electrically decoupled from the grid. Subsequently, stability and reliability of power systems are compromised. Inertia in power systems has been traditionally determined by considering all the rotating masses directly connected to the grid. Thus, as the penetration of renewable units increases, the inertia of the power system decreases due to the reduction of directly connected rotating machines. As a consequence, power systems require a new set of strategies to include these renewable sources. In fact, 'hidden inertia,''synthetic inertia' and 'virtual inertia' are terms currently used to represent an artificial inertia created by inverter control strategies of such renewable sources. This chapter reviews the inertia concept and proposes a method to estimate the rotational inertia in different parts of the world. In addition, an extensive discussion on wind and photovoltaic power plants and their contribution to inertia and power system stability is presented.

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Section: Wind Power Plant Frequency Control Strategiesmentioning

confidence: 99%

Section: Wind Power Plant Frequency Control Strategiesmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Virtual Inertia Techniques for Renewable Energy-Based Generators

Fernández‐Guillamón¹,

Gómez‐Lázaro²,

Muljadi³

et al. 2021

Renewable Energy - Technologies and Applications

View full text Add to dashboard Cite

show abstract

“…When the additional power ∆p d is supplied, the pitch angle reduces to β 0 . The over-speed control increases the rotational speed of the rotor, shifting the supplied power p del towards the right of the maximum power p MPP [30][31][32]. When the additional power ∆p d is supplied, the rotor speed has to be reduced to ω MPP , releasing kinetic energy [33].…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Control Scheme for Variable Speed Wind Turbines Providing Frequency Regulation in Isolated Power Systems with Thermal Generation

et al. 2020

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The lack of synchronous inertia, associated with the relevant penetration of variable speed wind turbines (VSWTs) into isolated power systems, has increased their vulnerability to strong frequency deviations. In fact, the activation of load shedding schemes is a common practice when an incident occurs, i.e., the outage of a conventional unit. Under this framework, wind power plants should actively contribute to frequency stability and grid reliability. However, the contribution of VSWTs to frequency regulation involves several drawbacks related to their efficiency and equipment wear due to electrical power requirements, rotational speed changes, and subsequently, shaft torque oscillations. As a result, wind energy producers are not usually willing to offer such frequency regulation. In this paper, a new control technique is proposed to optimize the frequency response of wind power plants after a power imbalanced situation. The proposed frequency controller depends on different power system parameters through a linear regression to determine the contribution of wind power plants for each imbalance condition. As a consequence, VSWTs frequency contribution is estimated to minimize their mechanical and electrical efforts, thus reducing their equipment wear. A group of sixty supply-side and imbalance scenarios are simulated and analyzed. Results of the case study are compared to previous proposals. The proposed adaptive control reduces the maximum torque and rotational speed variations while at the same time maintaining similar values of the load shedding program. Extensive results and discussion are included in the paper.

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“…Moreover, demand-side resources are gaining more attention in FR problems, characterized by their flexibility, high efficiency, and large quantities [18][19][20][21]. A distributed demand-side control strategy to coordinate multiple load aggregators was proposed in [18], where the frequency regulation objective was solved by a small fraction of load aggregators.…”

Section: Introductionmentioning

confidence: 99%

Distributed Settlement of Frequency Regulation Based on a Battery Energy Storage System

et al. 2019

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Battery energy storage systems (BESS) have wide applicability for frequency regulation services in power systems, owing to their fast response and flexibility. In this paper, a distributed method for frequency regulation based on the BESS is proposed, where the method includes two layers. The upper layer is a communication network composed of agents, which is used to transmit and process information, whilst the bottom layer comprises the power system with the BESS, which provides a frequency regulation service for the system. Furthermore, a set of fully distributed control laws for the BESS are derived from the proposed distributed method, where economic power dispatch and frequency recovery are simultaneously achieved. Finally, simulations were conducted to evaluate the effectiveness of the proposed method. The results show that the system frequency regulation and economic power dispatch are achieved after considering the limits of the battery state of charge and communication delays.

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A Frequency Regulation Strategy for Wind Power Based on Limited Over-Speed De-Loading Curve Partitioning

Cited by 60 publications

References 14 publications

A Review of Virtual Inertia Techniques for Renewable Energy-Based Generators

A Review of Virtual Inertia Techniques for Renewable Energy-Based Generators

An Adaptive Control Scheme for Variable Speed Wind Turbines Providing Frequency Regulation in Isolated Power Systems with Thermal Generation

Distributed Settlement of Frequency Regulation Based on a Battery Energy Storage System

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