Active Distribution Network Expansion Planning Integrating Practical Operation Constraints

Abstract

This paper proposes a mathematics model of active distribution network expansion planning (DNEP) integrating the practical operation constraints, which are the OLTC (On-Load Tap Changer) tap adjusting frequency and substation voltage variation. Distributed Generation (DG) curtailment, load curtailment, OLTC tap adjustment, and reactive power compensation are considered as the active management schemes. The expansion model allows alternatives to be considered for new wiring, DG installation, new substation, and substation expansion. The DNEP problem is a mixed integer non-linear programming problem, active management, and uncertainties, especially with the DG integration make the DNEP problem much complex. In order to find the suitable algorithm, this paper converts the DNEP problem to a Second-Order Cone Programming (SOCP) model through distflow equations and constraints relaxation. A modified 33-bus application example is used to verify the proposed model with different active management scenarios.

Keywords::

• active distribution network
• distribution network expansion planning
• distflow
• second-order cone programming

Acknowledgments

This work was supported in part by the Shanghai Engineering Research Center of Green Energy Grid-Connected Technology under Grant 13DZ2251900 and the Key Laboratory of Control of Power Transmission and Conversion (SJTU), Ministry of Education (2016AA01).

Additional information

Funding

The authors would like to thank Shanghai Engineering Research Center of Green Energy Grid-Connected Technology (13DZ2251900) and the Key Laboratory of Control of Power Transmission and Conversion (SJTU), Ministry of Education (2016AA01).

Notes on contributors

Haijun Xing

Haijun Xing received the B.S., and M.S., degrees in the Department of Electrical Engineering from Harbin Institute of Technology, Harbin, China, in 2002 and 2004, respectively, and the Ph.D. degree from the Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China, in 2016. He is currently a lecturer in Shanghai University of Electric Power. His research interests include distribution network operation and planning, integrated energy, and smart grid.

Yang Fu

Yang Fu received the M.S., degree from Southeast University, Nanjing, China, and the Ph.D. degree from Shanghai University, Shanghai, China. His employment experience has included the Department of Electrical Engineering, Shanghai University of Electric Power. He is currently a Professor and the Dean of the College of Electrical Engineering, Shanghai University of Electric Power, Shanghai, China. His research interests include simulation of power systems, transformer fault diagnosis, planning of electric networks, and renewable energy.

Haozhong Cheng

Haozhong Cheng received the B.S., M.S., and Ph.D. degrees in power systems from Shanghai Jiao Tong University, Shanghai, China, in 1983, 1985, and 1998, respectively. He is currently a Professor of Shanghai Jiao Tong University. His research interests include power system planning, voltage stability, harmonics, operation, and deregulation.