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基于机器视觉与听觉响应的干式变压器状态智能诊断方法

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噪声与振动控制 2024年第4期44卷 199-204,235页

作者：邵宇鹰王枭彭鹏张阳高健袁国刚国网上海市电力有限公司上海200122 上海睿深电子科技有限公司上海201108

为提升干式变压器的状态监测与故障诊断能力,提出了一种新的整合机器视觉与听觉响应的变压器状态诊断方法。首先,通过目标检测算法对干式变压器的潜在故障位置进行识别监控,获取其位置信息;其次,整合延迟求和波束成形算法计算其潜在故... 详细信息

为提升干式变压器的状态监测与故障诊断能力,提出了一种新的整合机器视觉与听觉响应的变压器状态诊断方法。首先,通过目标检测算法对干式变压器的潜在故障位置进行识别监控,获取其位置信息;其次,整合延迟求和波束成形算法计算其潜在故障位置的声学信息,利用该声学信息实时监控变压器是否出现放电缺陷;最后,对于无法快速诊断的机械故障,利用听觉外周模型获取听觉谱,依据其声音信号的特征频段,设置各特征频率获得多特征频率听觉谱,通过卷积神经网络进行变压器故障类型识别。实验结果显示,所提的方法在噪声情况下的变压器状态识别准确率仍高达87.51%,优于其他对比的时频域特征提取方法。故所提方法能较准确地诊断干式变压器状态,并且具备良好的抗噪性能,有效补充了当前变压器的监测手段。

关键词：故障诊断干式变压器状态检测机器视觉声学成像听觉外周模型

±800 kV直流线路工程邻近带电体架线施工防护研究

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电力科学与工程 2024年第3期40卷 70-78页

作者：彭飞周亚傲肖斌邵宇鹰周孝法中国电力科学研究院有限公司北京100055 国网上海市电力公司上海200137

考虑直流输电线路邻近带电体架线施工风险,利用表面电荷法得到导线表面电场强度数学模型,应用有限元计算了邻近±800 kV直流输电线路和T型塔的空间电场分布情况,给出了架线施工时邻近线路和T型塔的最小关注距离。研制了直流电场安全监... 详细信息

考虑直流输电线路邻近带电体架线施工风险,利用表面电荷法得到导线表面电场强度数学模型,应用有限元计算了邻近±800 kV直流输电线路和T型塔的空间电场分布情况,给出了架线施工时邻近线路和T型塔的最小关注距离。研制了直流电场安全监控报警装置并用于验证有限元仿真结果;依托昌吉–古泉±1000 kV特高压直流工程甘3标段完成了装置功能验证,结合验证结果给出了邻近带电体施工管控措施。研究结果可为邻近带电体架线安全施工提供技术参考。

关键词：特高压直流输电输电线路邻近带电体微电子机械系统电场测量安全防护

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PET研究慢性疲劳综合征中枢机制现状

中国医学影像技术 2024年第3期40卷 459-463页

作者：李彬彬冯楚文孙忠人陈涛屈媛媛孙维伯王玉琳王庆勇邵玉莹鲁菁杨添淞黑龙江中医药大学研究生学院黑龙江哈尔滨150040 黑龙江中医药大学附属第一医院针灸科黑龙江哈尔滨150040 黑龙江针灸临床(脑病)神经生物学省重点实验室黑龙江哈尔滨150040 哈尔滨医科大学第一临床医学院黑龙江哈尔滨150081 黑龙江中医药大学附属第二医院针灸科黑龙江哈尔滨150001

慢性疲劳综合征(CFS)与中枢系统功能异常密切相关,常伴认知困难、焦虑抑郁及痛觉改变等,目前尚无特异性诊断方法。PET可为研究CFS中枢系统异常提供重要参考依据。本文就PET研究CFS中枢机制现状进行综述。

关键词：慢性疲劳综合征正电子发射断层显像中枢神经系统

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中医传统功法治疗疲劳研究进展

国际中医中药杂志 2024年第1期46卷 119-123页

作者：邵玉莹鲁菁屈媛媛冯楚文郭述豪李彬彬陈涛杨添淞黑龙江中医药大学哈尔滨150040 黑龙江中医药大学附属第一医院教务科哈尔滨150040 黑龙江省针灸临床(脑病)神经生物学重点实验室哈尔滨150040

中医传统功法是中医防治疾病的重要手段,可通过外调骨骼肌肉、内调身心脏腑,促进血液循环、改善睡眠障碍、提升代谢和免疫能力,达到防病治病、延长寿命、强身健体的目的,在治疗慢性疲劳综合征、运动性疲劳、卒中后疲劳、癌因性疲劳等各... 详细信息

中医传统功法是中医防治疾病的重要手段,可通过外调骨骼肌肉、内调身心脏腑,促进血液循环、改善睡眠障碍、提升代谢和免疫能力,达到防病治病、延长寿命、强身健体的目的,在治疗慢性疲劳综合征、运动性疲劳、卒中后疲劳、癌因性疲劳等各类疲劳方面疗效显著。

关键词：疲劳中医传统功法研究进展综述

Insights into the Structure Stability of Prussian Blue for Aqueous Zinc Ion Batteries

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Energy & Environmental Materials 2021年第1期4卷 111-116页

作者： Zhuxin Li Tingting Liu Ruijin Meng Lujie Gao Yiping Zou Peng Peng yuying shao Xiao Liang State Key Laboratory of Chem/Bio-Sensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of EducationCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China State Grid Shanghai Municipal Electric Power Company Shanghai 200025China

The reversible storage of Zn^(2+)ions in Prussian blue analogues with typical aqueous solution was challenged by fast degradation and poor coulombic efficiency,while the mechanism is yet to be *** study correlates the performance of the nickel hexacyanoferrate to the dynamics of H_(2)O in the electrolyte and the associated phase stability of the *** demonstrates severe Ni dissolution in conventional diluted aqueous electrolyte(1 M ZnSO^(4)or 1 M Zn(TFSI)^(2)),leading to structure collapse with the formation of an electrochemical inert *** is regarded as the descriptor for the fast decay of nickel hexacyanoferrate in diluted aqueous ***,a well-preserved open framework for zinc storage was obtained in concentrated aqueous electrolyte(1 M Zn(TFSI)_(2)+21 M LiTFSI)—the H_(2)O activity is highly suppressed by extensive coordination—thus,reversible capacity of 60.2 m Ah g^(-1)over 1600 cycles could be delivered.

关键词： aqueous battery long lifespan phase stability Prussian blue zinc ion battery

Distributed Vibration Sensor With Laser Phase-Noise Immunity by Phase-Extraction φ-OTDR

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Photonic Sensors 2019年第3期9卷 223-229页

作者： yuying shao Huanhuan LIU Peng PENG Fufei PANG Guoqin YU Zhen CHEN Na CHEN Tingyun WANG State Grid Shanghai Municipal Electric Power Company Shanghai 200072 China Key laboratory of Specialty Fiber Optics and Optical Access Networks Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication Shanghai Institute for Advanced Communication and Data Science Shanghai University Shanghai 200444 China

We have demonstrated a distributed vibration sensor based on phase-sensitive optical time-domain reflectometer (φ-OTDR) system exhibiting immunity to the laser phase noise. Two laser sources with different linewidth and phase noise levels are used in the φ-OTDR system, respectively. Based on the phase noise power spectrum density of both lasers, the laser phase is almost unchanged during an extremely short period of time, hence, the impact of phase noise can be suppressed effectively through phase difference between the Rayleigh scattered light from two adjacent sections of the fiber which define the gauge length. Based on the phase difference method, the external vibration can be located accurately at 41.01 km by the(φ-OTDR system incorporating these two lasers. Meanwhile, the average signal-to-noise ratio (SNR) of the retrieved vibration signal by using Laser I is found to be -37.7 dB, which is comparable to that of -37.5 dB by using Laser II although the linewidth and the phase noise level of the two lasers are distinct. The obtained results indicate that the phase difference method can enhance the performance of(φ-OTDR system with laser phase-noise immunity for distributed vibration sensing, showing potential application in oil-gas pipeline monitoring, perimeter security, and other fields.

关键词： Distributed vibration sensing optical time domain reflectometer fiber sensor phase noise

Excitatory somatostatin interneurons in the dentate gyrus drive a widespread seizure network in cortical dysplasia

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Signal Transduction and Targeted Therapy 2023年第6期8卷 3111-3122页

作者： Yang Zheng Cenglin Xu Jinyi Sun Wenjie Ming Sijie Dai yuying shao Xiaoyun Qiu Menghan Li Chunhong Shen Jinghong Xu Fan Fei Jiajia Fang Xuhong Jiang Guoqing Zheng Weiwei Hu Yi Wang Shuang Wang Meiping Ding Zhong Chen Department of Neurology Zhejiang Provincial Hospital of Chinese MedicineThe First Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhou310060China Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province School of Pharmaceutical SciencesZhejiang Chinese Medical UniversityHangzhou310053China Institute of Pharmacology and Toxicology College of Pharmaceutical SciencesZhejiang UniversityHangzhou310058China Epilepsy Center Department of NeurologySecond Affiliated Hospital Zhejiang University School of MedicineHangzhou310009China Department of Neurology Fourth Affiliated Hospital of Zhejiang University School of MedicineYiwu322000China

Seizures due to cortical dysplasia are notorious for their poor prognosis even with medications and surgery,likely due to the widespread seizure *** studies have primarily focused on the disruption of dysplastic lesions,rather than remote regions such as the ***,we first quantified the epileptogenicity of the hippocampus in patients with late-stage cortical *** further investigated the cellular substrates leading to the epileptic hippocampus,using multiscale tools including calcium imaging,optogenetics,immunohistochemistry and *** the first time,we revealed the role of hippocampal somatostatin-positive interneurons in cortical dysplasia-related ***-positive were recruited during cortical dysplasia-related ***,optogenetic studies suggested that somatostatin-positive interneurons paradoxically facilitated seizure *** contrast,parvalbumin-positive interneurons retained an inhibitory role as in *** recordings and immunohistochemical studies revealed glutamate-mediated excitatory transmission from somatostatin-positive interneurons in the dentate *** together,our study reveals a novel role of excitatory somatostatin-positive neurons in the seizure network and brings new insights into the cellular basis of cortical dysplasia.

关键词： somatostatin dysplasia seizure

基于MRI探讨针刺治疗血管性认知障碍的穴位特异性效应机制

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中国中西医结合影像学杂志 2024年第4期22卷 488-493页

作者：郭述豪刘婷婷冯楚文屈媛媛陈涛邵玉莹鲁菁李彬彬朱明航袁志英杨添淞黑龙江中医药大学研究生院黑龙江哈尔滨150040 黑龙江中医药大学附属第一医院康复二科黑龙江哈尔滨150040 黑龙江省中医药信息学重点实验室黑龙江哈尔滨150040

血管性认知障碍(VCI)是脑血管因素引起的认知功能受损,针刺治疗VCI的效果显著,但相关机制尚不明确。MRI能为观察VCI患者病变脑区的结构功能改变提供可视化依据。有研究发现针刺不同穴位时大脑的结构功能改善具有一定差异,可能涉及针刺... 详细信息

血管性认知障碍(VCI)是脑血管因素引起的认知功能受损,针刺治疗VCI的效果显著,但相关机制尚不明确。MRI能为观察VCI患者病变脑区的结构功能改变提供可视化依据。有研究发现针刺不同穴位时大脑的结构功能改善具有一定差异,可能涉及针刺疗法的穴位特异性效应机制。梳理近年来VCI患者脑区改变的MRI报道与针刺治疗VCI的MRI研究,分析针刺改善VCI患者病变脑区结构与功能的MRI表现,揭示针刺不同穴位、穴位组合与真/假穴治疗VCI的穴位特异性效应机制,为针刺治疗VCI的临床应用及选穴提供参考。

关键词：血管性认知障碍针刺磁共振成像穴位特异性

Spatial Load Forecasting of Distribution Network Based on Artificial Intelligent Algorithm

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Spatial Load Forecasting of Distribution Network Based on Ar...