A Large Wind Power System in Almost Island Operation—A Danish Case Study

Akhmatov, Vladislav; Eriksen, Peter Børre

doi:10.1109/tpwrs.2007.901283

Cited by 72 publications

(41 citation statements)

References 7 publications

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“…Assume that the voltage security region exists, and at a given operating point, the reactive power outputs of the three wind farms are (20,20,10) MVar. From Figure 7, the operating point is secure under normal conditions because it is within the voltage security region.…”

Section: Two-step Optimal Adjustment Strategymentioning

confidence: 99%

“…One of the major reasons for this is the lack of coordinated voltage/reactive power control [1][2][3][4][5][6][7][8][9]. A number of techniques have been investigated to maintain the voltage within a specified range and improve the system stability for a single wind farm [10][11][12][13][14][15][16][17]. However, in centralized integration of wind power, interdependency among wind farms and cascading tripping events further complicate the voltage control problem.…”

Section: Introductionmentioning

confidence: 99%

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A Static Voltage Security Region for Centralized Wind Power Integration—Part II: Applications

Ding

Guo

Bo³

et al. 2014

Energies

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Abstract:In Part I of this work, a static voltage security region was introduced to guarantee the safety of wind farm reactive power outputs under both base conditions and N-1 contingency. In this paper, a mathematical representation of the approximate N-1 security region has further studied to provide better coordination among wind farms and help prevent cascading tripping following a single wind farm trip. Besides, the influence of active power on the security region is studied. The proposed methods are demonstrated for N-1 contingency cases in a nine-bus system. The simulations verify that the N-1 security region is a small subset of the security region under base conditions. They also illustrate the fact that if the system is simply operated below the reactive power limits, without coordination among the wind farms, the static voltage is likely to exceed its limit. A two-step optimal adjustment strategy is introduced to shift insecure operating points into the security region under N-1 contingency. Through extensive numerical studies, the effectiveness of the proposed technique is confirmed.

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Section: Two-step Optimal Adjustment Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Static Voltage Security Region for Centralized Wind Power Integration—Part II: Applications

Ding

Guo

Bo³

et al. 2014

Energies

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“…However, due to the rapid increase in global energy consumption and the diminishing fossil fuels, the demand for new generation capacities and efficient energy production, delivery and utilization is rising. Utilizing renewable energy [1], distributed generation, and energy storage in large scale can potentially solve such problems as energy shortage and global climate change.…”

Section: …………………………………………………………………………………………………… Introduction:-mentioning

confidence: 99%

A Control Stratergy for the Improvement of Power Quality in Microgrid.

Prabhakar¹,

Vennila²

2017

IJAR

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“…Few papers have been found in the instability analysis of the large wind power whose simulation model could be validated by the measured data. [11] provided the comparison between the measured and simulated curves during the voltage dip, but the case was much simpler than what occurred in China.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Simulation Study on the Cascading Trip-off Fault of a Large Number of Wind Turbines in China on May 14, 2012

Qiao¹,

Lu²,

Lu³

et al. 2015

Journal of Electrical Engineering and Technology

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-The integration of the large-scale wind power brings great challenge to the stability of the power grid. This paper investigates and studies the fault on May 14, 2012 of the large-scale cascading trip-off of wind turbines in North China. According to the characteristics of the voltage variation, the fault process is divided into three stages: the pre-event stage, the critical stage before cascading, and the cascading stage. The scenes in the fault are reproduced, using the full-size actual power system model. Simulation models of double-fed induction generators (DFIGs) and SVCs including protection settings and controller strategies are carefully chosen to find out the reason of voltage instability in each stage. Some voltage dynamic that have never been observed before in the faults of the same kind are analyzed in detail, and an equivalent voltage sensitive dynamic model of DFIG is proposed for the fast computation. The conclusions about the voltage dynamics are validated by the actual PMU observation evidence.

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A Large Wind Power System in Almost Island Operation—A Danish Case Study

Cited by 72 publications

References 7 publications

A Static Voltage Security Region for Centralized Wind Power Integration—Part II: Applications

A Static Voltage Security Region for Centralized Wind Power Integration—Part II: Applications

A Control Stratergy for the Improvement of Power Quality in Microgrid.

Investigation and Simulation Study on the Cascading Trip-off Fault of a Large Number of Wind Turbines in China on May 14, 2012

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