Mitigation of voltage sags by network reconfiguration of a utility power system

Chen, S.L.; Chen, G.B.; Hsu, Sheng-Yen; Chen, A.Y.T.; Guo, Tsung-Yi; Huang, Fuyuan; Huang, Yu-Chih

doi:10.1109/tdc.2002.1177779

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…The random nature of the voltage sag causes [7, 8, 9 and 10] could be incorporated in the mitigation process. A voltage sag mitigation method was developed by means of a series of utility strategies implemented for a period of 10 years and upgraded on the basis of actual data during that period [11].…”

Section: Introductionmentioning

confidence: 99%

Voltage sag mitigation in distribution systems by using genetically optimized switching actions

Salman

Mohamed

Shareef

2011

2011 5th International Power Engineering and Optimization Conference

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Network reconfiguration is a switching action process for altering the distribution network structure. It is an efficient method for line loss reduction in power systems and though uncommon, it can also be employed for voltage sag mitigation. In this paper, a method for improving bus voltage magnitude during voltage sag is presented. It is done by applying network reconfiguration to the exposed weak area in distribution systems. In the process of reconfiguration, genetic algorithm with a new encoding method is used to maintain the radial structure of distribution network while reaching the optimal solution. The simulation results show that the proposed method is efficient and feasible for improving the bus voltage profile during voltage sag. The proposed method may assist utility engineers in taking the right decision for network reconfiguration.Index Terms-Voltage sag, distribution system and power quality.

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Section: Introductionmentioning

confidence: 99%

Voltage sag mitigation in distribution systems by using genetically optimized switching actions

Salman

Mohamed

Shareef

2011

2011 5th International Power Engineering and Optimization Conference

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“…In order to verify the feasibility of the proposed method, a numerical example simulation has been done based on matlab / simulink , results show that there is a significant effect. On the other hand, voltage sag will cause economic loss, equipment damage and casualties, with destroying the voltage sensitive loads, so that threaten the security and stability of power system performance [1] . Consequently, voltage sag problem has received widely attention from domestic and foreign research workers.In recent years, a quantity of research workers forcus on the compensation of voltage sag.…”

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confidence: 99%

A New Method to Detect Voltage Sag Based on Wavelet Energy Entropy

Wang

Liu

et al. 2013

AMM

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Voltage sags was a common power system disturbance, usually associated with power system faults. Nowadays, there were more and more methods to detect voltage sag, involving with RMS, peak voltage detect, FFT. Owing to their defections, they were too slow when they came to being applied to detect voltages sags. This paper presents a method based on wavelet energy entropy detection voltage sags, this method can detect the drop time quickly and sensitively. In order to verify the feasibility of the proposed method, a numerical example simulation has been done based on matlab / simulink , results show that there is a significant effect.

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