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| 1 | Generalized Energy Storage Allocation Strategies for Load Aggregator in Hierarchical Electricity Markets显示文摘The uncertainty of user-side resource response will affect the response quality and economic benefit of load aggregator(LA).Therefore,this paper regards the flexible user-side resources as a virtual energy storage(VES),and uses the traditional narrow sense energy storage(NSES)to alleviate the uncertainty of VES.In order to further enhance the competitive advantage of LA in electricity market transactions,the operation mechanism of LA in day-ahead and real-time market is analyzed,respectively.Besides,truncated normal distribution is used to simulate the response accuracy of VES,and the response model of NSES is constructed at the same time.Then,the hierarchical market access index(HMAI)is introduced to quantify the risk of LA being eliminated in the market competition.Finally,combined with the priority response strategy of VES and HMAI,the capacity allocation model of NSES is established.As the capacity model is nonlinear,Monte Carlo simulation and adaptive particle swarm optimization algorithm are used to solve it.In order to verify the effectiveness of the model,the data from PJM market in the United States is used for testing.Simulation results show that the model established can provide the effective NSES capacity allocation strategy for LA to compensate the uncertainty of VES response,and the economic benefit of LA can be increased by 52.2%at its maximum.Through the reasonable NSES capacity allocation,LA is encouraged to improve its own resource level,thus forming a virtuous circle of market competition. | Weiqing Sun Wei Liu Wei Xiang Jie Zhang | 2022 | Journal of Modern Power Systems and Clean Energy2022，10，4： | 0 |
| 2 | 1500 V锂离子电池簇电场分布仿真及绝缘风险分析显示文摘锂离子电池储能在辅助可再生能源并网、电网调频和调峰等方面发挥重要作用。提高锂离子电池储能系统直流侧电压等级,有利于储能系统的降本增效,却对电池系统绝缘性能产生了更高的要求。该文对锂离子电池簇在直流1500 V下场强分布进行了仿真计算,并考虑了绝缘结构胶中不同规格气泡缺陷的影响。由于存在共模干扰的影响,该文对直流电压、共模电压叠加下电池簇场强分布进行了仿真计算,结果表明:1500 V直流电压下场强最大值出现在外绝缘膜和绝缘罩交界处,贯穿型气泡缺陷使局部场强最大值增大130.6%,考虑共模电压影响后一个周期内场强最大值增幅约为86%,且场强最大值点由外绝缘膜转移至空气中。该文构建的跨越4个数量级的大跨度几何尺寸(10^(1)~10^(-3)m)电池系统电场仿真模型首次建立了储能电池簇中各电池单体金属壳体表面的电场分布,首次将共模干扰引入电池单体电场分析,提出了通过降低电池系统对地寄生电容从而抑制共模干扰、增加单体电池边角处绝缘强度从而减小最大电场强度的方法,解决了高压电池系统在共模干扰下电场分布畸变、绝缘风险增大的问题,为高压电池系统绝缘设计提供理论支撑。 | 牛腾腾 黄人杰 渠展展 惠东 杨颖 | 2024 | 中国电机工程学报2024，44，1： | 0 |
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