Results 21 to 30 of about 2,276 (150)
An Advanced Fuzzy Control Strategy for Hybrid Energy Storage Systems Considering Smoothing of Wind Power Fluctuations at Future Moments [PDF]
ObjectivesThe existing hybrid energy storage system control strategy finds it difficult to maintain the state of charge (SOC) within a reasonable range while also meeting the advanced charging and discharging needs due to future wind power fluctuations ...
FAN Wei, LI Ji, YUAN Zhi, ZHOU Dan
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, 2018 铅酸蓄电池荷电状态(state of charge)是电源管理系统中的重要参数,准确估算蓄电池荷电状态具有重要意义。现有铅酸蓄电池荷电状态估算方法存在不适用于实际行车环境、易受干扰、计算精度低等缺陷。在开路电压法与安时积分法结合的基础上提出一种改进SOC估算方法,研究结合多个参数并引入权值w的SOC初始化算法,在SOC估算过程中根据实时温度校正电池容量,可以提高计算精度,符合工况。实验结果表明:此SOC估算方法具有很好的鲁棒性,最大估算误差小于3%
吉莹 +4 more
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
Power Coordinated Control Strategy for Grid-Connected DC Microgrid Considering State of Charge [PDF]
ObjectivesExisting research on decentralized coordinated control strategies mainly focuses on power distribution within DC microgrid, with limited consideration given to the operation of grid-connected DC microgrids.
LI Hailong +6 more
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, 2019 随着主动配电网技术的逐步发展和应用,针对主动配电网的各项评估技术也需要进一步研究。由于主动配电网在网络结构、潮流流向等方面与传统配电网有很大区别,因此针对主动配电网的评估方法也与传统配电网不同,提出了一种考虑分布式再生能源和储能的主动配电网可靠性评估方法。首先运用蒙特卡洛模拟法进行系统状态选择,再基于不同网络类型,采用改进的前推回代潮流计算方法进行潮流计算与潮流平衡调整,进而计算各项评估指标,获取综合评估值。通过对9个方案进行可靠性评估 ...
刘旭娜 +4 more
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Gaoya dianqi, 2020 配网中大量使用负荷开关进行负载电流及故障电流的开断,由于负荷开关拒分拒合导致配网事故时有发生,文中研究了一种基于电机电流测量的负荷开关状态检测方法。在实验室采用现场常用的交流驱动电机负荷开关,通过对其传动齿轮箱添加沙粒及粘贴胶带等方式,构建了3种不同严重程度的负荷开关机械故障,对电机电流时域及频域信号进行了测量及分析。结果表明随着负荷开关机械故障严重程度增加,电机动作转矩增大,导致电机电流幅值增加、暂态持续时间增加、暂态过度时间减少及信号频域低频分量幅值增加 ...
赵晓晖 +6 more
doaj
Optimal Operation of Residential Microgrids Based on a Robust Model Using Information Gap Decision Theory [PDF]
ObjectivesResidential microgrids are an important part of the new-type power system, and their optimal operation is crucial for improving the utilization efficiency of renewable energy and reducing system operating costs.
LIU Shilin, LUO Zonglong
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Optimization method for island and reef hybrid power generation systems' power capacity based on adaptive ant colony algorithm [PDF]
Objectives Aiming to address the existing challenges in the power capacity configuration of island and reef hybrid power generation systems, this paper proposes an optimization method based on the adaptive ant colony algorithm (ACA).
Hao ZHANG +4 more
core +1 more source
Dianci bileiqi, 2006 无间隙金属氧化物避雷器（MOA）的运行状态监测是保证电力系统可靠运行的重要措施,由于MOA运行状态参量受环境温度影响,会造成对MOA状态判断不准确,引发严重事故。研究了MOA运行状态主要监测参量随温度的变化特性,揭示了状态参量变化与温度、荷电率及电阻片几何尺寸的关系。持续运行电压下,在20℃～60℃范围内,直流U1mA、工频参考电压随温度单调递减,交流泄漏单调递增;全泄漏电流具有微弱的正温度系数,随温度的升高而缓慢递增,而阻性电流分量随温度变化增长更快。在80%～90%荷电率下运行,MOA的阻性电流IR、
郭洁, 王森, 冯敏
doaj
Gaoya dianqi, 2017 电力变压器是电力系统中的关键设备,其正常运行对保证电能输送可靠性及安全性至关重要。为了确保变压器设备处于良好状态,设备投入运行后预防性试验,在线监测及带电检测等定期巡检与维护是十分必要的,但对变压器而言,设备状态评估与故障诊断需要依据标准、规程及现场大量经验才能开展。文中依据设备运行负荷情况提出了变压器设备绝缘状态进行分析与预测方法,即通过异常值提取及数据简化建立两种典型负荷增长趋势,并利用时间序列模型对设备负荷特性进行分析对负荷增长类型进行识别。实例分析表明 ...
王红斌 +4 more
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