New Voltage Sag Frequency Evaluation Method Considering the Satisfaction Degree of Sensitive Customer

Abstract:

To meet power customers’ satisfaction is the essential responsibilities of utilities. Considering the property of customer’s satisfaction degree, an analytical interval assessment method of voltage sag is proposed. The customer satisfaction degree is presented by interval number corresponding to the voltage tolerance for the tested equipment installed at the customer side. Based on the determination function derived from the relationship between the voltage magnitude and the length of fault line in the power system, critical fault positions are determined through analytical iterative algorithm. By the variation of satisfaction degree within a given interval, the interval sag frequency is calculated. Moreover, the quantitative sag frequency is determined by the help of the interval sag frequency. The proposed method is applied to a five-bus system and IEEE 30-bus testing system. The simulation results comparing with existing methods have shown that this method is credible and suitable for the practical engineering application.

• Periodical: Advanced Materials Research (Volumes 614-615)
• Pages: 1069-1074
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.614-615.1069
• Online since: December 2012
• Authors: Jun He, Xu Na Liu, Li Ping Chen
• Keywords: Customer Satisfaction, Interval Characteristic, Sensitive Customer, Voltage Sag, Voltage Tolerance

References

[1] Shuai Lin, Dongxiao Niu: Empirical Study on Electric Power Customer Satisfaction Based on Kana model, IITA International Conference on Services Science, Management and Engineering, SSME '09, 11-12 July (2009), pp.136-139

DOI: 10.1109/ssme.2009.103

[2] Saifur Rahman: Smart Grid Expectations, IEEE power & energy magazine, September-October (2009), Vol.7, No.5, p.88, 84-85

[3] M.H.J. Bollen, L.D. Zhang: Review Different methods for classification of three-phase unbalanced voltage dips due to faults, Electric Power Systems Research, (2003), Vol.66-1, pp.59-69

DOI: 10.1016/s0378-7796(03)00072-5

[4] Djokic S.Z.; Stockman K., Milanovic J.V., Desmet J.J.M, Belmans, R.: Sensitivity of AC adjustable speed drives to voltage sags and short interruptions, IEEE Trans. on Power Del., Jan (2005), Vol.20-1, pp.494-505

DOI: 10.1109/tpwrd.2004.832353

[5] M. Avendano-Mora, J. V. Milanovic, B. Patel, Y. Zhang: The Influence of Model Parameters and Uncertainties on Assessment of Network Wide Costs of Voltage Sags, 10th International Conference on Electrical Power Quality and Utilisation, EPQU 2009, 15-17, pp.1-7

DOI: 10.1109/epqu.2009.5318857

[6] Bollen M H J: Method of critical distances for stochastic assessment of voltage sags, IEE Proceedings Generation, Transmission & Distribution, Vol.145-1(1998), pp.70-7

DOI: 10.1049/ip-gtd:19981739

[7] Juarez E E, Hernandez A. "An analytical approach for stochastic assessment of balanced and unbalanced voltage sags in large systems," Trans. on Power Del., Vol.21, No.3, pp.1493-1500, July (2006)

DOI: 10.1109/tpwrd.2005.860266