Results 1 to 10 of about 195 (121)
[Movable Array of Magnetoencephalography With Optically Pumped Magnetometers Effectively Captures Primary Auditory-Evoked Response Signals in Healthy Populations at Low Altitudes]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban目的 探讨可移动（指探测器到颞叶头皮的距离可以移动）阵列光泵磁力仪脑磁图（optically pumped magnetometers-magnetoencephalography, OPM-MEG）是否可以有效采集平原健康受试者听觉诱发的响应信号，为后续在长期高原居住人群中探讨脑功能变化提供有益的技术参考。 方法 本研究共招募了40名平原（海拔470 m）健康受试者，通过调整两侧颞叶探测器与头皮的距离，比较不同距离下（0 mm、5 mm、10 mm、15 mm）的颞叶听觉响应信号 ...
Yuan Y +9 more
europepmc +2 more sources
A Study on Solar Photovoltaic Array Surface Morphology Variation in Sandy Area Based on Wind Tunnel Test [PDF]
, 2022 [Objective] The surface morphology changes and its relation with wind environment under wind regime disturbance by a solar photovoltaic array in a sandy area of the middle part of Kubuqi Desert, in order to provide a theoretical basis for determining a ...
Dang Xiaohong +5 more
core +1 more source
智能城市应用, 2023 本文从大兴国际机场污水站现有闲置的土地资源出发，综合考虑气候资源、屋顶荷载、主要设备选型、光伏阵列设计等因素，对大兴国际机场光伏建设方案进行了研究，分析了其电能质量、社会效益和经济效益，建议尽早推进实施项目的落地与实施。
慷 刘
semanticscholar +1 more source
基于模型预测控制的光储发电系统VSG频率控制方法 [PDF]
, 2022 随着光伏发电装机规模大幅提升，电力系统转动惯量不断降低，虚拟同步发电机（virtual synchronous generator，VSG）技术被广泛采用以应对日益严峻的电网稳定性问题。为进一步提高VSG技术对系统稳定性的改善作用，提出基于模型预测控制的VSG频率控制方法。该方法首先在同步发电机转子运动方程和逆变器下垂控制方程基础上建立VSG可优化的离散模型，再通过模型预测控制（model predictive control，MPC）预测VSG转子角频率的运动轨迹 ...
张志丹 +3 more
core +1 more source
Research on Protection Scheme of DC Microgrid Integrated with Fault Current Limiting Control Technology [PDF]
, 2023 [Introduction] With the development of new loads, such as distributed power sources and electric vehicles, DC(Direct Current) microgrids have the advantages of fewer commutation links and lower system losses than AC(Alternating Current) microgrids, and ...
Bingyao ZHENG +6 more
core +1 more source
Secondary frequency control of islanded microgrid considering wind and solar stochastics
, 2023 As the high penetration of wind and photovoltaic distributed generation (DG) in the microgrid, the stochastic and low inertia emerge, bringing more challenges especially when the microgrid operates in isolated islands.
Chen, Jikai +4 more
core +1 more source
Butterfly Optimization Algorithm for Chaotic Feedback Sharing and Group Synergy [PDF]
, 2022 A butterfly optimization algorithm (BOA) based on chaotic feedback sharing and group synergy (CFSBOA) is proposed to solve the shortcomings of low precision and easy to fall into local optimum.
LI Shouyu, HE Qing, DU Nisuo
core +1 more source
Dianci bileiqi, 2021 光伏组件与阵列的接地系统对于光伏发电系统的雷电防护至关重要,有必要详细研究接地系统在雷电作用下的暂态特性。通过EMTP软件建立光伏组件支架和地网模型,计算光伏组件支架雷击暂态过电压,讨论合适的垂直接地体与水平地网连接方式。分析光伏阵列采用组件地网互连方式时,光伏组件地网合适间距及其受土壤电阻率和雷电流波头时间的影响。研究结果表明:光伏组件遭受雷击后,组件框架和接地支架上会产生幅值较高的暂态过电压,且过电压波形振荡较为明显;垂直接地体与水平地网侧边连接、中心连接和边角连接三种方式中,侧边连接较为合适 ...
陆剑峰, 凌超
doaj
, 2023 分布式光伏是土地资源紧张条件下推进“双碳”目标实现的重要途径。水上光伏作为近年来一种创新的分布式光伏开发方式受到了广泛关注，现行政策也对水上光伏开发做出了细致管理规定。提出一种基于遥感信息的水上光伏发电潜力评估方法，旨在为水上光伏发电资源与项目开发的科学论证和精准评估提供一种手段。方法基于开放的遥感影像处理平台获取遥感影像并计算水体指数，通过大津法确定阈值、提取全部水体面积，并利用制图工具ArcMap按照各项影响因素对水面面积逐级折减；然后通过将水体划分成若干格网 ...
宋福龙 +6 more
core +1 more source