Strategy of reactive power and voltage control in large wind farms integrated region

Xiao-hong, Zhu; Wang, Y.; Fu, Chun Peng

doi:10.1109/powercon.2010.5666579

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…Results have shown that it is an effective approach to meet the HVRT requirements for a single WT by modifying converter control schemes. Other research studies are focused on the hierarchical reactive power control or voltage control strategies of a WPP [15–17], which is mainly concerned about the steady state voltage stability.…”

Section: Introductionmentioning

confidence: 99%

Wind farm HVRT capability improvement based on coordinated reactive power control strategy

Zhang¹,

Li²,

Zhang³

et al. 2017

J. eng.

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Section: Introductionmentioning

confidence: 99%

Wind farm HVRT capability improvement based on coordinated reactive power control strategy

Zhang¹,

Li²,

Zhang³

et al. 2017

J. eng.

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“…There are several voltage‐related challenges for accommodating large‐scale wind power, such as voltage fluctuations and voltage stability under disturbances. Several techniques have been investigated in an attempt to provide voltage control strategies [4], including regulation of the network voltage by coordinating the reactive power among wind farms [5] and regulation of the continuous reactive power output of wind units for secondary voltage control [6]. Based on these reactive power voltage control strategies, a quadratic robust optimisation model to guarantee the voltage of each wind unit within the security region is proposed in [7].…”

Section: Introductionmentioning

confidence: 99%

Voltage security regions considering wind power curtailment to prevent cascading trip faults in wind power integration areas

Niu

Guo

Sun

et al. 2016

IET Renewable Power Generation

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Hundreds of cascading trip faults have occurred in recent years in Chinese wind farms, leading to challenges in the secure operation of the power system. To prevent cascading trip faults, the concept of a voltage security region (VSR) has been discussed in previous studies. However, the VSR proposed in previous work cannot provide decoupled voltage control ranges for each wind farm, which would be a more promising and applicable solution for wind farms in China. In addition, with increasing wind farm active power penetration, the VSR of a wind power integration area may not exist. In this situation, the control centre must curtail some wind power to guarantee security. Thus, this study proposes an iterative VSR model to guarantee secure operation and obtain a larger VSR in wind farms considering wind power curtailment. In each wind farm, the VSR is designed to guarantee normal operation of each wind turbine generator, while in the control centre, the region is designed to guarantee normal operation both under normal conditions and N–1 contingencies considering wind power curtailment. The proposed VSR demonstrated good performance in a simple test case and in a real system in Northern China using a Monte Carlo method.

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“…There are several voltage-related challenges for accommodating large-scale wind power such as voltage fluctuations and the voltage stability under disturbances. In order to address these operation issues in wind power grid, a number of techniques have been developed to enhance the wind power hosting capacity and stability of the power system [1][2][3][4][5], maintain the voltage of the wind power integration area within limits [6][7][8][9][10][11] and maintain an appropriate voltage profile with the help of on-load tap changes (OLTCs) and capacitor/reactor banks [25][26][27]. Furthermore, static methods such as PV curves and continuation power flow (CPF) are used to analyze the risk of voltage instability from the perspective of voltage stability in wind systems.…”

mentioning

confidence: 99%

Autonomous Voltage Security Regions to Prevent Cascading Trip Faults in Wind Turbine Generators

Niu

Guo

Sun

et al. 2016

IEEE Trans. Sustain. Energy

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Abstract-Cascading trip faults in large-scale wind power centralized integration areas bring new challenges to the secure operation of power systems. In order to deal with the complexity of voltage security regions and the computation difficulty, this paper proposes an autonomous voltage security region (AVSR) for each wind farm and the point of common coupling (PCC) substation, whose voltage can be controlled in a decoupled way. The computation of the AVSR can be completed using a stepwise search method exchanging voltage and power information between the control center and the wind farms. At each wind farm, an AVSR is determined to guarantee the normal operation of each wind turbine generator (WTG), while in the control center, each region is designed in order to guarantee secure operation both under normal conditions and after an N-1 contingency. A real system in Northern China was used to carry out case studies to verify the effectiveness of the AVSRs proposed, and good performance was demonstrated using the Monte Carlo method.

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Strategy of reactive power and voltage control in large wind farms integrated region

Cited by 9 publications

References 6 publications

Wind farm HVRT capability improvement based on coordinated reactive power control strategy

Wind farm HVRT capability improvement based on coordinated reactive power control strategy

Voltage security regions considering wind power curtailment to prevent cascading trip faults in wind power integration areas

Autonomous Voltage Security Regions to Prevent Cascading Trip Faults in Wind Turbine Generators

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