Joint planning and operation optimization of photovoltaic-storage- charging integrated station containing electric vehicles

doi:10.19799/j.cnki.2095-4239.2021.0481

Abstract

Abstract:

The traditional charging station has the problems of having a very great impact on the electrical power grid, low land utilization rate, and high construction cost. In view of the referred engineering problems, a joint optimization model of economic planning and operation of the facility configuration of a Photovoltaic-Storage-Charging integrated station is proposed. The model takes the optimal economic benefit of the integrated power station, including investment cost, maintenance cost, operation cost, and charging penalty cost, as the objective function. And it comprehensively considers the constraints, including intermittent photovoltaic power (PV) generation, energy storage stations, and energy interaction with the distribution network, and describes the charging behavior of electric vehicles based on M/G/N/K queuing theory. From the perspective of planning, make configuration decisions on photovoltaic capacity, energy storage capacity, the number of charging piles, and the number of waiting spaces. Then, from an operational perspective, make energy dispatching plans for each controlled unit integrated into the distribution network and integrated power station. Finally, the configuration results and the cost composition of integrated power stations under different scenarios, regions, and budgets are compared and analyzed using example simulations, as is the impact of optical storage configuration results and photovoltaic output uncertainty on the total profit. The results show that the economic contribution of optical storage capacity allocation to the integrated power station is greater than the number of charging piles and waiting spaces, and the planning priority should be set in the actual planning. Energy storage shows good flexibility in energy management in the integrated power station, which can improve its operation economy. Moreover, the uncertain performance of different regional environments and photovoltaic output affects the facility configuration results and profits of the integrated power station.

Key words: photovoltaic-storage-charging integrated station, photovoltaic, energy storage, electric vehicles, equipment configuration

CLC Number:

TM 732

Yan ZHANG, Wei HAN, Chuang SONG, Shuangyi YANG. Joint planning and operation optimization of photovoltaic-storage- charging integrated station containing electric vehicles[J]. Energy Storage Science and Technology, 2022, 11(5): 1502-1511.

Figures/Tables 12

Fig. 1

Fig. 2

Table 1

Table 2

The related parameters of PSCIS"

参数	数值	参数	数值
$P D N m a x$	1200 kW	$C P V M$	10980 ¥/kW
η_ch/η_dis	0.95	$C L M$	73260 ¥
N^max	10	$C C H M$	210000 ¥
R^max	20	C^W	3.63 ¥
C^ESS	0.06 ¥/kW	C^rej	5.47 ¥
$C E S S M$	1626 ¥/kW	P^rate	120 kW
C_PV	10360 ¥/kW	—	—

Table 2

Table 3

Table 4

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

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时段类型	时段	电价/[¥/(kWh)]
谷时段	00∶00—06∶00	1.284
平时段	06∶00—16∶00	1.752
平时段	21∶00—00∶00	1.752
峰时段	16∶00—21∶00	2.280

Case	充电桩数量	候车位数量	PV容量/kW	ESS容量/kW
Case 1	6	1	—	—
Case 2	6	1	—	1800
Case 3	5	2	600	—
Case 4	4	2	533	592

成本和利润组成/(10⁶¥)	Case 1	Case 2	Case 3	Case 4
充电收入	266.057	266.057	243.193	212.265
运行成本	253.25	236.352	110.033	74.342
惩罚成本	2.280	2.280	2.808	3.557
维修成本	1.373	2.766	2.915	2.997
投资成本	1.333	4.260	7.785	7.800
总利润	7.821	20.399	119.652	123.569

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