Stochastic Day-ahead Scheduling Optimization for Wind-PV-ES Microgrid Considering Battery Life Loss

doi:10.11985/2022.03.025

Abstract

Abstract:

With the ‘carbon peak’ and ‘carbon neutrality’ goals proposed, the power system based on renewable resources has received extensive attention, and the wind-PV-ES(Energy storage) microgrid is the typical scenario. The piecewise linear life loss model is established by studying the life loss characteristics of batteries. Combined with the role of energy storage technology in improving the wind and solar power consumption and reducing carbon emissions, the economic effect of battery on the microgrid is added to the wind-PV-ES microgrid scenarios. Regarding the interaction cost of the grid, wind and solar abandonment cost, shaving load cost, carbon emissions cost, and battery life loss cost as the objective function, the day-ahead scheduling model of entire wind-PV-ES microgrid is linearized. The case is used to analyze that the introduction of batteries can effectively increase the battery life and improve the economy of the microgrid by regulating the charging and discharging actions of batteries.

Key words: Wind-PV-ES microgrid, wind-PV accommodation, battery life loss, stochastic scheduling, linearization

CLC Number:

TM732

ZHAO Yi, FANG Chen, FENG Donghan, LI Hengjie, SHI Shanshan, ZHOU Yun. Stochastic Day-ahead Scheduling Optimization for Wind-PV-ES Microgrid Considering Battery Life Loss[J]. Journal of Electrical Engineering, 2022, 17(3): 210-218.

Figures/Tables 10

References 16

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参数	数值
额定容量${{E}_{\text{rated}}}$/(kW·h)	400
额定功率${{P}_{\text{rated}}}$/kW	100
充、放电效率${{\eta }_{\text{c}}}$,${{\eta }_{\text{d}}}$	0.95
荷电状态最大值$S_{\text{OC}}^{\text{max}}$	0.9
荷电状态最小值$S_{\text{OC}}^{\text{min}}$	0.2
单位容量投资成本${{c}_{\text{E}}}$/[元/(kW·h)]	1 000
单位功率变流器投资成本${{c}_{\text{p}}}$/(元/kW)	1 500

运行成本	模式
运行成本	含电池储能	无电池储能
和电网交互费用/元	38.49	55.45
储能寿命损耗成本/元	84.88	0
削负荷成本/元	540.58	2 559.90
弃风弃光成本/元	7.61	302.63
碳排放成本/元	30.97	31.51
总运行成本/元	702.53	2 949.49

运行成本	模式
运行成本	计及电池寿命损耗	不计及电池寿命损耗
和电网交互成本/元	38.49	34.91
储能寿命损耗成本/元	84.88	0
削负荷成本/元	540.58	539.88
弃风弃光成本/元	7.61	7.45
碳排放成本/元	30.97	35.08
总运行成本/元	702.53	617.32

电池储能配置容量/(kW·h)	和电网交互费用/元	储能寿命损耗成本/元	削负荷成本/元	弃风弃光成本/元	碳排放成本/元	总运行成本/元
300	59.43	69.43	768.58	81.32	32.83	1 011.59
350	49.02	77.35	654.70	44.18	31.90	857.15
400	38.49	84.88	540.58	7.61	30.97	702.53
450	37.40	92.79	426.56	0	30.06	586.81
500	40.51	98.76	312.48	0	29.11	480.86