Investigation into the estimation of the critical clearing time of a grid connected wind power based embedded generator

Salman, S.K.; Teo, A.L.J.

doi:10.1109/tdc.2002.1177609

Cited by 30 publications

(6 citation statements)

References 8 publications

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“…2 em r s τ = i (11) From these equations a torque-slip curve after the fault, for a given rating of maximum STATCOM current, can be established, and a critical clearing slip or speed for a given mechanical torque can be found,. This is similar to what is reported in [9] for induction generators with passive capacitor compensation.…”

Section: B System Equationsmentioning

confidence: 99%

“…This makes it necessary to account for the effects of shaft stiffness, and corresponding stored potential energy because of mechanical torsion, when estimating critical clearing time [11]. …”

Section: Mechanical Considerationsmentioning

confidence: 99%

“…Using equations (7), (10) and (11), this gives as post-fault torque-slip characteristics of a induction generator with a given STATCOM current rating. …”

mentioning

confidence: 99%

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Wind farms with increased transient stability margin provided by a STATCOM

Molinas

Suul

Undeland

2006

2006 CES/IEEE 5th International Power Electronics and Motion Control Conference

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this paper analyzes the extent to which the transient stability margin of wind farms using squirrel cage generators can be increased by the use of a STATCOM. A simplified analytical approach is used first to quantify the effect of the STATCOM on the transient stability margin. An experimental validation of the calculated transient margin is then presented by measurements done in a laboratory prototype of 7.5 kW emulating a wind turbine or wind farms. Measurement results confirm that the STATCOM provides a clear transient stability margin increase and with adequate rating it becomes possible to ride through severe faults.

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Section: B System Equationsmentioning

confidence: 99%

Section: Mechanical Considerationsmentioning

confidence: 99%

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Wind farms with increased transient stability margin provided by a STATCOM

Molinas

Suul

Undeland

2006

2006 CES/IEEE 5th International Power Electronics and Motion Control Conference

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“…Energy storage technologies could produce savings of £10 bn a year by 2050 in the UK [9]. ABB and UK Power Networks developed a dynamic energy storage solution that supports power quality during disturbances and support intermittence of wind power generation [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Energy Storage Batteries in Stability Enforcement of Low Inertia Active Distribution Network

Bangash

Farrag

Osman

2019

Technol Econ Smart Grids Sustain Energy

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The inherent intermittency of renewable power generation poses one of the great challenges to the future smart grid. With incentives and subsidies, the penetration level of small-scale renewable energy into power grids is sharply increasing worldwide. Battery energy storage systems (BESS) are used to curtail the extra power during low demand times. These energy storage systems are capable of absorbing and delivering real power to the grid. The increased penetration level of inverter-based distributed generation (DG) reduces the inertia of the grid and thus affects the transient stability of the network. This paper discusses and investigates the impact of BESS on distribution networks' stability with high penetration levels of inverter based DG. The obtained results show that proper charging and discharging schemes of the BESS can enhance the transient stability of the network. Fast switching between charging and discharging mode would be helpful during transient fault disturbance to keep the system in a balanced condition.

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“…It is useful to maintain the terminal voltage of induction generators in fluctuating wind conditions. Moreover, when the voltage ratio of the external system and the induction generator is large, it becomes necessary to control the generator power factor for an operating induction generator [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Terminal voltage and power factor control of induction generators for wind power generation system

Senjyu

Sueyoshi

Kuninaka

et al. 2008

Electrical Engineering Japan

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SUMMARYThis paper deals with two types of control method for induction generators used in wind power generating stations. One is aimed at maintaining the voltage of the station node and the other is aimed at maintaining a constant power factor through the branch connecting to the station. Both can be in the controllable area by adjusting the generator reactive power with compensating capacitors. First, theoretical equations for the terminal voltage and power factor of an induction generator are derived, and then the compensating capacitance corresponding to the wind velocity variation is determined quantitatively. By using the proposed control method, it is shown to be possible to maintain the terminal voltage and operating power factor of a wind power generation system at the target values, even when abrupt deviations are caused by wind power disturbances.

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Investigation into the estimation of the critical clearing time of a grid connected wind power based embedded generator

Cited by 30 publications

References 8 publications

Wind farms with increased transient stability margin provided by a STATCOM

Wind farms with increased transient stability margin provided by a STATCOM

Investigation of Energy Storage Batteries in Stability Enforcement of Low Inertia Active Distribution Network

Terminal voltage and power factor control of induction generators for wind power generation system

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