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1.浙江大学电气工程学院,浙江省杭州市 310027
2.国网浙江省电力有限公司经济技术研究院,浙江省杭州市 310002
3.国网浙江省电力有限公司,浙江省杭州市 310007
Received:31 July 2023,
Revised:2023-10-27,
Published Online:11 April 2024,
Published:25 May 2024
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韩林阳,叶承晋,朱超等.高温天气下计及用户意愿的城市充电负荷空间引导策略[J].电力系统自动化,2024,48(10):139-150.
HAN Linyang,YE Chengjin,ZHU Chao,et al.Spatial Guidance Strategy for Urban Charging Loads in High-temperature Weather Considering User Willingness[J].Automation of Electric Power Systems,2024,48(10):139-150.
韩林阳,叶承晋,朱超等.高温天气下计及用户意愿的城市充电负荷空间引导策略[J].电力系统自动化,2024,48(10):139-150. DOI: 10.7500/AEPS20230731005.
HAN Linyang,YE Chengjin,ZHU Chao,et al.Spatial Guidance Strategy for Urban Charging Loads in High-temperature Weather Considering User Willingness[J].Automation of Electric Power Systems,2024,48(10):139-150. DOI: 10.7500/AEPS20230731005.
持续高温天气易导致电网供需平衡紧张,功率大、时空分布随机性强的电动汽车充电负荷可能进一步加剧电力负荷尖峰,但同时也具备成为优质调峰资源的潜力。面向高温天气下的城市电网,文中研究计及用户意愿的城市充电负荷模拟和空间引导方法。首先,基于计划行为理论分析了车辆出行行为的形成过程,构建了基于马尔可夫链的电动汽车出行模型,用于分析不同场景下车辆的出行轨迹;然后,建立基于出行里程及时长的车辆能耗计算方法和考虑用户意愿的充电选择模型,实现电动汽车充电负荷时空分布的精细化模拟;最后,提出了一种基于低谷充电折扣的城市充电负荷空间引导策略,并采用粒子群优化算法对充电折扣进行优化求解。算例仿真表明,高温天气下用户出行意愿出现规律性变化,考虑高温天气和用户意愿影响后城市充电负荷的模拟结果更符合实际情况;此外,实施低谷充电折扣后充电负荷的时空转移可有效降低城市电网负荷峰谷差,并提高电动汽车使用和电力系统运行的经济性。
Continuous high-temperature weather is prone to cause tension in the supply-demand balance of the power grid. Besides
charging loads of electric vehicles (EVs) may further aggravate the peak load due to the large charging power and high spatial-temporal distribution randomness. However
EVs also have the potential to provide high-quality peak-shaving resources. For the urban power grid in the high-temperature weather
this paper studies the simulation and the spatial guidance methods of urban charging loads considering user willingness. First
the formation process of vehicle travel behaviors is analyzed based on the planned behavior theory
and a travel model of EVs based on the Markov chain is constructed to analyze travel trajectories in different scenarios. Besides
a calculation method of vehicle energy consumption based on travel mileage and time duration is proposed
and a charging option model considering user willingness is established. The proposed models are adopted to finely simulate the spatial-temporal distribution of charging loads. Finally
a spatial guidance strategy for urban charging loads based on low-valley charging discounts is proposed
and the particle swarm optimization algorithm is used to optimally solve the charging discounts. The simulation results show that the user travel willingness changes regularly in the high-temperature weather
and the simulation results of urban charging loads considering the effects of high-temperature weather and user willingness are more in line with reality. Moreover
the spatial-temporal shifting of charging loads after conducting the low-valley charging discount can effectively alleviate the load difference between the peak and valley of the urban power grid. Besides
it can also improve the economy of vehicle usage and power system operation.
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