A Study on Compensating Voltage Drop in Distribution Systems due to Nighttime Simultaneous Charging of Electric Vehicles Utilizing Charging Power Adjustment and Reactive Power Injection

作者：Mitsukuri Yuki^*; Hara Ryoichi; Kita Hiroyuki; Kamiya Eiji; Taki Shoji; Hiraiwa Naoya; Kogure Eiji

来源：Electrical Engineering in Japan, 2014, 189(4): 9-21.

DOI：10.1002/eej.22558

• electric vehicles
• voltage drop
• distribution system
• dispersed voltage control

To reduce the environment load, electric vehicles (EV) have been attracting attention and expectations. since they can run with at good fuel efficiency and without exhaust gases. It is expected that EV will become more and more popular. Generally, EVs would be used for driving during daytime and be charged during the nighttime, considering lifestyle and time-of-use patterns. If most EV owners adopt this use pattern, feeder voltage profiles could be greatly affected, causing severe voltage drops. The battery charger for EVs described in this papers consists of a self-commutated inverter, which in principle can control not only active power but also reactive power. We propose a basic feeder voltage regulation algorithm, PQ control, using EVs which involves adjustment of the EV charging schedule and reactive power injection. In addition, we propose prediction control, which is based on PQ control and is takes account of prediction of the receiving voltage. Advanced communication control regulation algorithms, utilizing communication among EVs and the distribution system operator, are also proposed. The purpose of this paper is to confirm the effectiveness of the three proposed algorithms by simulations.

• 出版日期2014-12