Adaptation Evaluation Method of Distribution Network to Accept Distributed Generations

Abstract:

Adaptation evaluation index system is established according to the influences brought by the distributed generations (DGs) interconnected with the distribution network. Evaluation indicators are proposed to reflect the operating conditions of distribution lines, switches and other important devices of distribution network. Combine Analytic Hierarchy Process (AHP) and Principal Component Analysis (PCA) method is used to determine the weights of the evaluation indicators. Whereby obtain the comprehensive evaluation results of distribution equipment adaptation to DGs integration. A study of a practical grid is made in the cases of the DGs centralized integration, decentralized integration, and without DGs. The simulated result shows that a large number of DGs connected with the distribution network would deteriorate a majority of the equipment operating indicators, especially to the indexes related to switches and protection devices. Meanwhile, when a distribution network is connected into the same capacity of DGs, the distribution equipment would show a better adaptation to DGs' decentralized integration.

• Periodical: Applied Mechanics and Materials (Volumes 716-717)
• Pages: 1172-1179
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.716-717.1172
• Online since: December 2014
• Authors: Yu Hui*, Xin Wang, Dong Mei Zhao, Jian Su, Peng Wang, Hai Tao Liu
• Keywords: Centralized Integration, Decentralized Integration, Distributed Generation (DG), Distribution Network, Equipment Adaptation Evaluation

References

[1] Liu Rui, Yang Jing-fei, Cheng Hao-zhong. Comprehensive Evaluation of Distributed Power grid [J] Automation of Electric Power Systems, 2013, 25(1): 34-39.

[2] Zhang Li-mei, Tang Wei, Zhao Yun-jun. Comprehensive assessment of the impact of distributed generation on the distribution network[C]. /2010 China Smart Grid Symposium. 2010: 132-135, 140.

[3] Zhou Ying. PV grid power station on the distribution network impact analysis and comprehensive assessment of the positive and negative effects[D] Chongqing University, 2012. DOI: 10. 7666/d. y2154515.

[4] Liu Cheng-xi, Quan Xu, Chen Zhe, Vulnerability Evaluation of Power System Integrated with Large-scale Distributed Generation Based on Complex Network Theory [J] INTERNATIONAL JOURNAL OF ENERGY RESEARCH. (2009).

DOI: 10.1109/upec.2012.6398605

[5] Luis F. Ochoa, Chris J. Dent, and Gareth P. Harrison, Distribution Network Capacity Assessment: Variable DG and Active Networks [J], IEEE TRANSACTIONS ON POWER SYSTEMS. 2010 25(1) 87-95.

DOI: 10.1109/tpwrs.2009.2031223

[6] Jalali. M, Zare. K, Hagh. MT. A multi-stage MINLP-based model for sub-transmission system expansion planning considering the placement of DG units [J], INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS , 2014 63 8-16.

DOI: 10.1016/j.ijepes.2014.05.044

[7] Zhu Xue-ling, Wang Zhen-ya, Xin Zi-li, Fang Shan. The impact of distributed power distribution network on three-current protection[J]. North China Water Conservancy and Hydropower College, 2013, 06: 106-109.

[8] Olga Moraes Toledo, Delly Oliveira Filho, Jose Helvecio Martins, Maria Helena Murta Vale. Methodology for Evaluation of Grid-Tie Connection of Distributed Energy Resources—Case Study With Photovoltaic and Energy Storage [J], INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 2013 28(2) 1132-1139.

DOI: 10.1109/tpwrs.2012.2207971

[9] Saeed Abapour, Kazem Zare, Behnam Mohammadi-ivatloo, Evaluation of technical risks in distribution network along with distributed generation based on active management [J], IET Generation, Transmission & Distribution, doi: 10. 1049/iet-gtd. 2013. 0666.

DOI: 10.1049/iet-gtd.2013.0666

[10] Han Chen-dao, Huang Zhi-wei, Ge Shao-yun, Qiu Ye. Urban Distribution Network Comprehensive Evaluation System[J]. Grid technology, 2012, 08: 95-99.

[11] Kaur. S, Kumbhar. G, Sharma. J. A MINLP technique for optimal placement of multiple DG units in distribution systems[J]. INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, 2014 63 609-617.

DOI: 10.1016/j.ijepes.2014.06.023

[12] DL/T 256-2012, City power grid safety standards[S].

[13] Wang Xin-nan, Wang Ji, Yang Lu-lu, Jin Qiang, Ma Wei-qian. A typical scheme of distributed power grid access for Medium Voltage Distribution[J]. Chinese electrical industry (Technology) 2014, 05: 38-42.

[14] Ladjavardi M, Masoum M A S, Islam S. Impact of a SG nonlinear model on the harmonic distortion of a distribution generation system [J]. IEEE Power Engineering Conference, 2008. AUPEC'08.