Under voltage load shedding design with modal analysis approach

Arief, Ardiaty; Nappu, Muhammad Bachtiar; Yin, X.; Zhou, Xia; Zhang, Dong

doi:10.1049/cp.2009.1822

Cited by 6 publications

(12 citation statements)

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“…These lead to a cascading outage, where they appear via a short circuit on a transmission line or as a loss of generation. In recent years, large blackouts have been caused by cascading failures that are propagated via a variety of processes in the power system [20].…”

Section: Voltage Collapse Preventionmentioning

confidence: 99%

“…In addition to these lines, 138-kV transmission lines also tripped. Then cascading failures started, and these caused the voltage to drop and a tripping of lines and generators in the system [3,20,33,34].…”

Section: Voltage Collapse Preventionmentioning

confidence: 99%

“…This event happens due to increased load and tripping of transmission lines and generators by their protection systems [20].…”

Section: Voltage Collapse Preventionmentioning

confidence: 99%

“…The purpose of UVLS is to restore the reactive power balance in the power system, prevent voltage collapse, and keep voltage problems within a local area rather than allowing them to spread out by shedding some loads [20].…”

Section: Control Actionmentioning

confidence: 99%

“…After disturbances, when impedance is within the operational area, the system would be prone to voltage collapse. The authors in [20] improved system voltage stability with the help of modal analysis and load shedding. In [21], the system voltage stability was improved by using system sensitivity coefficients and load shedding, and cascading events in the system were prevented.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Assessment of the maximum loadability point of a power system after third zone of distance relay corrective actions

Moravej¹,

Bagheri²

2016

Turk J Elec Eng & Comp Sci

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Abstract:In this paper, the operation of a system and distance relay is improved during voltage instability by using an improved strategy. After detecting the voltage instability, the third zone is blocked. However, the system is prone to voltage collapse. Shunt capacitor compensation and a load shedding scheme can be used to protect the system from voltage collapse conditions. Load shedding plans can be performed based on a reduction in the power flow in the line where the relay is located. The reason is that the minimum eigenvalue of the load flow Jacobian (reduced and unreduced Jacobians) is increased and the static voltage stability is improved. After the shunt capacitor compensation and load shedding, the relay margin becomes positive, impedance comes out from the third zone, and the relay does not need to remain blocked. The maximum loadability point (MLP) is increased by performing a control action in the system. To accomplish this strategy, the 14-bus IEEE test system is used.

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Section: Voltage Collapse Preventionmentioning

confidence: 99%

Section: Voltage Collapse Preventionmentioning

confidence: 99%

“…This event happens due to increased load and tripping of transmission lines and generators by their protection systems [20].…”

Section: Voltage Collapse Preventionmentioning

confidence: 99%

Section: Control Actionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%