Preventing voltage collapse by large SVCs at power system faults

Al-Mubarak, Ahmed H.; Bamsak, Saleh M.; Thorvaldsson, B.; Halonen, Mikael; Grünbaum, Rolf

doi:10.1109/psce.2009.4840189

Cited by 31 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this challenge can be resolved through the use of a Static Var Compensator (SVC). The generic single line diagram after installation of the SVC is shown in With the help of an SVC that dynamically supports the situation during the fault through reactive power support, the case can be solved [3].…”

Section: A Under-voltage Controlmentioning

confidence: 99%

FACTS for cost-effective improvement of power feeding of large mining complexes

Grünbaum

Rasmussen

2012

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Self Cite

View full text Add to dashboard Cite

Loads such as mine hoists, mmmg shovels, crushers, etc for mining are demanding and also sensitive to dips and fluctuations in feeding voltage, thereby depending on secure, high quality power supply. At the same time, mining complexes are often remotely located, where power is weak and unpredictable. A traditional way to deal with poor power supply is reinforcing the grid by building new lines, uprating voltages to higher levels, or building local power plants to supply parts or the total of the load. Such measures, however, are expensive and time-consuming, if at all permitted. A more cost as well as time effective way may be to introduce FACTS, thereby utilizing existing facilities more efficiently. The paper highlights SVC and STATCOM for improving power supplies to mining industry, offers some salient design features, as well as gives examples of current, successful FACTS installations for the purpose in the world.

show abstract

Section: A Under-voltage Controlmentioning

confidence: 99%

FACTS for cost-effective improvement of power feeding of large mining complexes

Grünbaum

Rasmussen

2012

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Self Cite

View full text Add to dashboard Cite

show abstract

“…This might eventually cause voltage collapse in the power system. Thus, the growing penetration of IM loads in power systems is the leading driving force of short-term voltage instability [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Multi-Phase Under Voltage Load Shedding Scheme for Preventing Delayed Voltage Recovery by Induction Motor Power Consumption Characteristics

Lee

Song

2018

Applied Sciences

View full text Add to dashboard Cite

This paper aims to develop a multi-phase under voltage load shedding (MUVLS) strategy that effectively sheds the load to mitigate delayed voltage recovery (DVR). The major cause of the DVR phenomenon is related to the dynamic characteristics of induction motor (IM) loads. The deaccelerating and stalling of the IM load during disturbances is the main driving force of short-term voltage instability, resulting in an amount of reactive power consumption and excessive current draw. With the economic efficiency of energy use, the proportion of IM loads is gradually increasing, and this trend might deteriorate system stability. This paper focuses on the impact of IM loads in the Korean power system and analyzes the parameter sensitivity of IM loads and the proportion of appropriate IM loads. The proposed procedure for under voltage load shedding (UVLS) applies voltage stability criteria to decide the most efficient load shedding scheme. The determined MUVLS scheme can offer new and more effective remedial actions to maintain voltage stability, considering the characteristics of IM loads. Case studies on the Korean power system have validated the performance of the proposed MUVLS scheme under severe contingency scenarios, showing that the proposed strategy effectively mitigates DVR.

show abstract

“…After making comprehensive analysis and simulations, considering the network topology and cost limitations, it was decided to implement a 16 MVAr thyristor controlled reactor (TCR)–based SVC system as the reasonable rating. The real implementations of SVC systems in weak power networks and longitudinal feeders have been covered in several publications for different purposes particularly at transmission level . For instance, the authors in one study used SVC to mitigate voltage unbalance by limiting the negative phase sequence in a relatively weak transmission network caused by a distribution traction load.…”

Section: Introductionmentioning

confidence: 99%

“…The real implementations of SVC systems in weak power networks and longitudinal feeders have been covered in several publications for different purposes particularly at transmission level. 10,22,[24][25][26] For instance, the authors in one study 10 used SVC to mitigate voltage unbalance by limiting the negative phase sequence in a relatively weak transmission network caused by a distribution traction load. However, in Al-Mubarak et al, 22 the primary objective was to utilize a large SVC installation at the transmission level to enhance the voltage at the distribution network connected to it, and to prevent the voltage collapse due to short circuit faults.…”

Section: Introductionmentioning

confidence: 99%

“…10,22,[24][25][26] For instance, the authors in one study 10 used SVC to mitigate voltage unbalance by limiting the negative phase sequence in a relatively weak transmission network caused by a distribution traction load. However, in Al-Mubarak et al, 22 the primary objective was to utilize a large SVC installation at the transmission level to enhance the voltage at the distribution network connected to it, and to prevent the voltage collapse due to short circuit faults. An interesting study was presented in a literature 26 where the author considered long transmission line equipped with SVC or static watt-var compensator as an alternative to a local diesel generation to supply small loads located far away from low-cost generation area.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Implementation aspects and comprehensive assessment of a 16 MVAr static VAr compensator installed for a weak distribution network

Alabduljabbar

Gerçek

Atalik

et al. 2017

Int. Trans. Electr. Energ. Syst.

View full text Add to dashboard Cite

Summary Voltage regulation at weak distribution networks and feeders imposes several challenges. The degree of complexities of the overall design and implementation is network and site dependent. In this paper, design and implementation of a thyristor controlled reactor–based static VAr compensator (SVC) system to enhance voltage regulation and avoid voltage instability are presented and discussed. The SVC system is installed for an extremely weak distribution network with long feeders in a remote area in the Kingdom of Saudi Arabia. This work is the first implementation of an SVC system in the utility's distribution network in Kingdom of Saudi Arabia. Principles of operation, overall design assessment, and protection modifications in the installation area are described. Power stage and digital control system are custom designed according to the specific network and operation requirements. The overall system is examined under steady‐state and dynamic conditions. Power system at the corresponding area with/without the compensator is simulated using PSCAD/EMTDC software. Field test results are also obtained, and the performance of the system is discussed along with the design considerations required for such installations. The various technical discussions presented in this paper highlight several practical considerations and practices that are valid in similar installations for extremely weak distribution networks around the world.

show abstract

Preventing voltage collapse by large SVCs at power system faults

Cited by 31 publications

References 4 publications

FACTS for cost-effective improvement of power feeding of large mining complexes

FACTS for cost-effective improvement of power feeding of large mining complexes

Multi-Phase Under Voltage Load Shedding Scheme for Preventing Delayed Voltage Recovery by Induction Motor Power Consumption Characteristics

Implementation aspects and comprehensive assessment of a 16 MVAr static VAr compensator installed for a weak distribution network

Contact Info

Product

Resources

About