Practical considerations in voltage stability assessment

Kundur, P.; Morison, K.; Gao, B.

doi:10.1016/0142-0615(93)90019-j

Cited by 30 publications

(9 citation statements)

References 8 publications

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“…The recently developed FACTS technology provides a way to relieve the stability problem imposed by increasing load demand. The application of FACTS devices to improve voltage stability margins in highly developed networks is well documented in [1]. The shunt as well as the series connected FACTS devices has been effectively used to provide voltage stabilization.…”

Section: Introductionmentioning

confidence: 99%

Application of Unified Power Flow Controller to Improve Steady State Voltage Limit

Mubeen¹,

Khan

Nema

2017

IJRA

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<span>This paper utilizes the voltage source model of Unified Power Flow Controller (UPFC) and examines its abilities in mitigating the steady state stability margins of electric power system. It analyzes its behavior for different controls strategies and proposes the most efficient mode of controlling the controller for voltage stability enhancement. A systematic analytical methodology based on the concept of modal analysis of the modified load flow equations is employed to identify the area in a power system which is most prone voltage instability. Also to identify the most effective point of placement for the UPFC, a computer program has been developed using MATLAB. The results of analysis on 14 bus system is presented here as a case study.</span>

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Section: Introductionmentioning

confidence: 99%

Application of Unified Power Flow Controller to Improve Steady State Voltage Limit

Mubeen¹,

Khan

Nema

2017

IJRA

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“…The reactive power drawn by the wind DG varies with time due to intermittent nature of wind. The fluctuating nature of reactive power flow would exacerbate the issue of voltage sensitivity [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Capacitors on Frequency of OLTC Tap Changes in the Presence of Wind Generation

Battu

Senroy

Abhyankar

2015

International Journal of Emerging Electric Power Systems

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Installation of a wind power distributed generator in a distribution system alters the reactive power drawn by the system. This affects the load bus voltages. Any deviation in load bus voltages from their limits is sensed by an on load tap changer of a transformer and it responds to maintain the bus voltages within their limits. The reactive power requirements of a wind generator vary due to the intermittent behaviour of wind, which will in turn vary the bus voltages. This has an affect on number of tap changings of a transformer. Frequent tap changing of a transformer increases wear and tear of it and ultimately reduces the life of it. A mathematical model is developed to analyze the voltage sensitivity at a load bus to the tap change of a transformer under different scenarios and conditions in the distribution system. A possible solution to reduce the number of tap changings is presented in this paper.

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“…This behaviour could be dominant if the DS is connected with a wind DG, which generally draws reactive power from the grid and supplies real power to it [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of OLTC behaviour in a wind power integrated distribution system

Rao

Senroy

Abhyankar

2014

2014 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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With introduction of wind power distributed generation into the distribution system, the reactive power drawn from and injected to the system are affected. This further affects the load bus voltages due to which on load tap changers of the transformers respond to maintain the terminal voltage. Due to the intermittent behaviour of wind, the reactive power requirements of wind generator vary. This may effect the behaviour of the tap changing transformer. In this paper an investigation of on-load tap changing transformer is done with and without wind power generator in the distribution network using voltage sensitivity analysis.

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Practical considerations in voltage stability assessment

Cited by 30 publications

References 8 publications

Application of Unified Power Flow Controller to Improve Steady State Voltage Limit

Application of Unified Power Flow Controller to Improve Steady State Voltage Limit

Effect of Capacitors on Frequency of OLTC Tap Changes in the Presence of Wind Generation

Analysis of OLTC behaviour in a wind power integrated distribution system

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