Abstract
This paper proposes an electric vehicle (EV) charging management scheme for effective utilization of photovoltaic (PV) power based on an auction mechanism. The proposed scheme coordinates an amount of self-consumption of PV output by shifting the charging period of customers' EVs, and it reduces PV curtailment caused by voltage rise in low-voltage distribution systems (LVDSs). The auction mechanism is introduced in order to assure both the equity of benefit in each customer and the autonomy that enables customers to voluntarily participate in the EV charging management scheme. The authors perform numerical simulations based on a Japanese distribution system model and evaluate the effectiveness of the proposed scheme. The results show that our proposed scheme reduces the residential operation cost and the PV curtailment in LVDSs without an enhanced communication network even taking into consideration the effects of forecasting errors of electricity demand and PV output, and unexpected disconnection condition of several EVs.
Highlights
T HE reduction of the photovoltaic (PV) curtailment is an important issue to achieve the maximum utilization of the penetrated PV power
We propose an electric vehicle (EV) charging management scheme, which simultaneously addresses the three issues noted above, based on an auction mechanism in terms of game theory for reducing PV curtailment originating from the voltage constraint and residential operation cost in the low-voltage distribution system (LVDS)
We proposed the EV charging management scheme based on the auction mechanism to reduce PV curtailment caused by voltage rise in the DS
Summary
T HE reduction of the photovoltaic (PV) curtailment is an important issue to achieve the maximum utilization of the penetrated PV power. A main advantage of these approaches is that the supply side can operate the devices in the most convenient way to achieve its objectives; additional investment is required in the supply side Another effective approach for mitigation of voltage rise and reduction of PV curtailment is based on utilization of the demand side controllable loads, such as the heat pump water heater (HPWH) [10], residential BESS [11], [12], and electric vehicle (EV) [13]–[17]. We propose an EV charging management scheme, which simultaneously addresses the three issues noted above, based on an auction mechanism in terms of game theory for reducing PV curtailment originating from the voltage constraint and residential operation cost in the low-voltage distribution system (LVDS).
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