A Reliability Impact and Assessment of Distributed Generation Integration to Distribution System


The main purpose of this paper is to study the reliability due to the employment of distributed generations (DG) integrated to distribution system. The system under this study is from Provincial Electricity Authority (PEA) that is a part of Thailand’s distribution system. Data of geographic information systems (GIS) including the distance of distribution line and location of load that are parameter of PEA is simulated using digital simulation and electrical network calculation program (DIgSILENT) to analyze the impact of reliability with the installing DG into the distribution system. The system average interruption frequency index (SAIFI), the system average interruption duration index (SAIDI) and interruption cost are assessed as index of reliability by comparing the SAIFI, SAIDI, and interruption cost between the base case (no DG) and the case that DG connected to the distribution system. The results can be summarized by focusing on location of DG, the capacity of DG, the size of load, and the distance of load which are factors able to impact to SAIFI, SAIDI, and interruption cost.

Share and Cite:

A. Ngaopitakkul, C. Pothisarn, S. Bunjongjit, B. Suechoey, C. Thammart and A. Nawikavatan, "A Reliability Impact and Assessment of Distributed Generation Integration to Distribution System," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 1043-1047. doi: 10.4236/epe.2013.54B199.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] M. Fotuhi-Firuzabad, “An Analytical Method to Consider DG Impacts on Distribution System Reliability,” IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005, pp. 1-6.
[2] I. K. Tarsi, A. Sheikholeslami, T. Barforoushi and S. M. B. Sadati, “Investigating Impacts of Distributed Generation on Distribution Networks Reliability: A Mathematical Model,” Electric Power Quality and Supply Reliability Conference (PQ), 2010, pp.117-124.
[3] H. Falaghi and M. Haghifam, “Distributed Generation Impacts on Electric Distribution Systems Reliability: Sensitivity Analysis,” The International Conference on Computer as a Tool (EUROCON), Vol. 2, 2005, pp. 1465-1468.
[4] Y. Yue, K. J. Qian and C. K. Zhou, “The Effect of Distributed Generation on Distribution System Reliability,” 42nd International Universities Power Engineering Conference (UPEC), 2007, pp. 911-916.
[5] S. X. Wang, W. Zhao and Y. Y. Chen, “Distribution System Reliability Evaluation Considering DG Impacts,” Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 6-9 April 2008, pp. 2603-2607. doi:10.1109/DRPT.2008.4523850
[6] N. Chaiyabut and P. Damrongkulkamjorn, “Impact of Customer Scattering on Distribution System Reliability with Distributed Generation,” IEEE Region 10 Conference (TENCON), 2010, pp. 568-573.
[7] A. C. Neto and M. G. da Silva, “Impact of Distributed Generation on Reliability Evaluation of Radial Distribution Systems Under Network Constraints,” 9th International Conference on Probabilistic Methods Applied to Power Systems (PMAPS), 11-15 June 2006, pp. 1-6. doi:10.1109/PMAPS.2006.360421
[8] A. A. Chowdhury, “Reliability Modeling of Distributed Generation in Conventional Distribution Systems Planning and Analysis,” IEEE Transactions on Industry Application, Vol. 39, No. 5, 2003, pp. 1493-1498. doi:10.1109/TIA.2003.816554
[9] In-Su Bae and Jin-O Kim, “Reliability Evaluation of Distributed Generation Based on Operation Mode,” IEEE Transactions on Power Systems, Vol. 22, No. 2, 2007, pp. 785-790. doi:10.1109/TPWRS.2007.894842
[10] A. M. Abdullah, “New Method for Assessment of Distributed Generation Impact on Distribution System Reliability: Islanded Operation,” IEEE Innovative Smart Grid Technologies – Asia (ISGT Asia), 2012, pp. 1-5.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.