Modeling and Simulation Research on the Influence of Dynamic Process of EV Charging Station on Transient Voltage Stability of Distribution Network

The promotion of electric vehicles (EVs) has eased the shortage of fossil fuels, but also brings challenges to the grid. Load modeling of EV is an important technical reserve to deal with the challenge. From practical application, this paper built the model of charging system consisting of voltage source PWM rectifier, phase-shift full bridge ZVS DC-DC converter and power battery pack and connected the model built to distribution system containing composite load. Furthermore, the paper calculated the critical clearing time of induction motor and used it as an index to evaluate the transient voltage stability under different EV penetration rate. Then the impact of dynamic characteristics of EV charging station on transient voltage stability of distribution network and its influence factors was analyzed. The results provided useful information for the safe and stability of power system with large-scaled EV accessed. Keywords-electric vehicle; transient voltage stability; charging station; dynamic model

[1]  K. Schneider,et al.  Impact assessment of plug-in hybrid vehicles on pacific northwest distribution systems , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[2]  Xiangning Lin,et al.  Study on the influence of large-scaled electric vehicle dispersed charging on transient voltage stability of distribution systems , 2014, 2014 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC).

[3]  J. Driesen,et al.  The Impact of Charging Plug-In Hybrid Electric Vehicles on a Residential Distribution Grid , 2010, IEEE Transactions on Power Systems.

[4]  Wei Chen,et al.  A survey of influence of electrics vehicle charging on power grid , 2014, 2014 9th IEEE Conference on Industrial Electronics and Applications.

[5]  Lu Chao,et al.  Analytical Assessment of Transient Voltage Stability of Load Bus Considering Induction Motors , 2009 .

[6]  Song Yonghua,et al.  Study on Charging Load Modeling and Coordinated Charging of Electric Vehicles Under Battery Swapping Modes , 2013 .

[7]  L. M. Cipcigan,et al.  Distribution networks with Electric Vehicles , 2009, 2009 44th International Universities Power Engineering Conference (UPEC).