Review of Power Supply and Distribution Construction Technology for Highway Electromechanical Engineering

In recent years,China has made significant progress in the construction of highways,resulting in an improved highway network that has provided robust support for economic and social development.However,the rapid expansion of highway construction,power supply,and distribution has led to several challenges in mechanical and electrical engineering technology.Ensuring the safe,stable,and cost-effective operation of the power supply and distribution system to meet the diverse requirements of highway operations has become a pressing issue.This article takes an example of a highway electromechanical engineering power supply and distribution construction project to provide insight into the construction process of highway electromechanical engineering power supply and distribution technology.

Application Strategies of BIM Technology in Highway Electromechanical Engineering

The transportation system is vital for social and economic development.With the rapid economic development,the demand for highways has been increasing.Mechanical and electrical engineering is a crucial part of highway construction,affecting the expressway’s later use.Applying building information modeling(BIM)technology in highway electromechanical engineering allows for the visibility and simulation of mechanical and electrical engineering construction,providing scientific guidance for construction.In this research,the author analyzes the advantages of BIM technology in highway electromechanical engineering and the basic composition of electromechanical engineering.The research proposes strategies and cases for applying BIM technology in highway electromechanical engineering.The ultimate goal of this research is to improve the construction of highways in terms of electromechanical engineering.

Analysis on the Application of Electrical New Technology of in Electromechanical Integration

The electrical new technology is a new frontier science.This kind of technology, with the development and progress of society, makes the continuous development and innovation.It is the future development trend of electrical engineering system,which plays a very important role in technological innovation.The principle and theoretical support for the development of electrical new technology includes Bio- electro magnetics, plasma physics, electromagnetic fluid mechanics and gas discharge physics etc.In addition, under the application of permanent magnetic materials and other new materials, the electrical new technology and obtained further development also promote the development and application of electronic power supply, strong magnetic field technology, solar photovoltaic power generation, and superconducting power technology.This paper mainly analyzes the application of electrical new technology in electromechanical integration.

Research and Review on the Development of Mechanical and Electrical Integration of System Function Principle and Related Technologies

In this paper, we conduct research on the development of mechanical and electrical integration of system function principle and related technologies. Along with the rapid and continuous development of modem science and technology, it ＇ s for the penetration and cross of different subjects great push, the more important is caused by technological revolution in the field of engineering and mechanical engineering field under the rapid development of computer technology and microelectronic technology and penetration to the mechanical and electrical integration, which is formed by the mechanical industry lead to trigger a particularly large changes in the mechanical industry management system and mode of production, product and technical structure, composition and function, thus result in industrial production from the previous mechanical electrification progressively electromechanical integration which lead the trend of the current technology.

Mechanical Integrity and Failure Analysis of Photovoltaic Modules under Simulated Snow Loads Using Pneumatic Airbag Setup

Photovoltaic (PV) modules have emerged as an ideal technology of choice for harvesting vastly available renewable energy resources. However, the efficiency of PV modules remains significantly lower than that of other renewable energy sources such as wind and hydro. One of the critical elements affecting a photovoltaic module’s efficiency is the variety of external climatic conditions under which it is installed. In this work, the effect of simulated snow loads was evaluated on the performance of PV modules with different types of cells and numbers of busbars. According to ASTM-1830 and IEC-1215 standards, a load of 5400 Pa was applied to the surface of PV modules for 3 hours. An indigenously developed pneumatic airbag test setup was used for the uniform application of this load throughout the test, which was validated by load cell and pressure gauge. Electroluminescence (EL) imaging and solar flash tests were performed before and after the application of load to characterize the performance and effect of load on PV modules. Based on these tests, the maximum power output, efficiency, fill factor and series resistance were determined. The results show that polycrystalline modules are the most likely to withstand the snow loads as compared to monocrystalline PV modules. A maximum drop of 32.13% in the power output and a 17.6% increase in series resistance were observed in the modules having more cracks. These findings demonstrated the efficacy of the newly established test setup and the potential of snow loads for reducing the overall performance of PV module.

“三教”改革下高职电气自动化技术专业活页式教材探索与实践——以“电气控制应用”一体化课程教材开发为例

“电气控制应用”一体化课程是实践性极强的科目,目前该课程所用教材大多存在形式单一、信息化资源配套不丰富、学生参与度低等问题,因此新形态教材的开发与建设显得尤为迫切。本文结合电气自动化技术岗位《电气安装检修工》要求,对接维修电工国家职业技能标准,以校企合作为契机,开发以工作过程为导向的活页式教材,以培养电气自动化技术高素质技能型人才。

基于联邦学习的分布式电采暖互动模式设计与展望

随着“双碳”目标的提出,以及“以电代煤”政策的贯彻落实,大量电采暖设备取代传统燃煤取暖投入运行并接入电网将成为必然趋势。大量电采暖设备可以作为需求侧可调资源进行新能源消纳,但是分布式电采暖所处地理区域较为分散,传统集中式管理的方式又存在隐私泄露、数据孤岛等问题。联邦学习作为一种分布式技术可在保护隐私的前提下支撑电采暖负荷互动,在分布式电采暖互动领域具有较强的适用性。分析了基于联邦学习的分布式电采暖互动需求,以及边缘缓存、隐私防护、通信传输优化和异构资源融合等技术在基于联邦学习的电采暖互动场景中的应用方式,并展望了未来基于联邦学习的分布式电采暖互动前景。

机械设计与低温锂电池全流程数字化智能制造的联系及应用

随着现代制造技术、信息技术和数字化技术的飞速发展,低温锂电池生产迎来了技术升级。对此本文综述了机械设计与低温锂电池数字化智能制造的联系以及技术优化进展。首先分析了低温锂电池产业数字化、智能化的发展流程,包括低温锂电池数字化制造和二阶段的智能化制造;然后重点探讨了机械设计为低温锂电池数字化智能制造产业带来的优化变革。从产业发展角度来看,与机械设计技术深度融合,可以从多个方面优化现有的低温锂电池数字化智能制造技术,对后者的产业结构调整和技术升级具有重要的指导作用。

考虑电-氢一体化的微电网低碳-经济协同优化调度

针对微电网中缺乏对碳排放流特性的精确刻画,导致运行层面中微电网的低碳运行方式和经济运行方式之间矛盾凸显,低碳和经济难以兼顾的问题,构建了计及绿电制氢和多能耦合的电-氢一体化运行框架,提出了综合考虑碳排放流和低碳需求响应的微电网低碳-经济协同双层优化调度模型。上层优化调度模型中,以风光储氢一体化工业园区为典型微电网场景,以低碳性和经济性协调最优为目标,将源侧碳交易机制融入调度决策目标中,充分挖掘微电网低碳-经济协同运行方式,以此制定微电网最优低碳经济调度策略;下层低碳需求响应模型中,以微电网用户碳减排所节约的碳排放成本为激励信号,通过建立微电网能量流与碳排放流的映射关系,实现碳排放责任的转移和分摊以及对微电网运行中的碳排放特性精细化评估,进而建立由负荷碳排放强度时空差异性引导用户参与碳减排策略的低碳需求响应(demond response,DR)模型,深入挖掘微电网源-荷间的低碳性和经济性间的协同性。以某工业园区微电网为例,验证了所提模型能有效兼顾系统的低碳性和经济性。

舰船综合电力系统研究进展与应用建议

该文概述舰船综合电力系统(integrated power system,IPS)的原理、组成、分类、特点与技术难点,介绍国内外工程研制情况,综述集成设计、大容量直流源及其并联组网控制、大容量直驱式电力推进、直流大电流开断保护、电力电子静止电源、高密度储能、智能化能量管理等7项共性技术及我国技术研究突破情况。针对IPS在民用新能源船舶、电动及混动飞机、轨道交通、海上能源高效利用等推广应用实际需求,给出系统推荐方案,并提出各应用场景下还需重点研究的内容,旨在为IPS在多领域推广应用提供参考。

基于5G技术的舰船电力调度自动化系统研究

考虑舰船电力系统线路复杂、设备多样,调度数据冗杂且规模巨大,在此情况下为实现舰船电力系统快速、有效自动化调度,设计基于5G技术的舰船电力调度自动化系统。系统使用由RTU远动终端设备采集电力系统的线路、设备运行信息后,由5G通信网关发送至调度器;调度器结合目前电力系统运行信息,使用基于线性求解器的电力系统自动化调度模型,构建以快速实现断电负载故障合理恢复为调度目标的目标函数,由线性求解器自动化求解满足目标函数条件的电力系统开关动作方案,以故障重构的方式实现舰船电力调度自动化管理。实验中该系统调度下,舰船电力系统失电负荷为0 kW,5G通信网络的整体效用值不受调度数据业务数据包数量的约束,高达0.9,能够稳定、高效地支持大规模调度数据的传输。

区块链技术+高职院校产教融合:耦合机理与实施路径

区块链技术凭借其强大的功能与优势,为高职院校产教融合赋能创新提供了新的底层逻辑与运行机制。基于区块链技术核心优势与高职院校产教融合实践所面临困境的分析,从学理层面论述了区块链技术与产教融合场景的耦合效应,并从多元治理、协同育人、资源配置和监测评价等方面设计了区块链技术赋能高职院校产教深度融合与高质量发展的实施路径。

科技社团赋能科技经济融合发展的多元协作机制

科技社团赋能科技经济融合发展是科技社团发展的重要方向,但是目前大都局限于实践活动的宣传和工作总结,实践先于理论建构。科技经济融合发展是一个多元合作的过程,但是科技社团赋能科技经济融合发展又呈现出碎片化困境。基于此,可以从构建不同地区、不同种类科技社团的合作机制、构建科技社团与企业的协作机制、构建科技社团与政府的协作机制、构建科技社团与高校、科研院校的合作机制、构建科技社团与村委会的合作机制等方面来构建科技社团赋能科技经济融合发展的多元协作机制,形成系统的路线图。

大数据画像结合多种教学方法在医学影像技术专业磁共振实习中的应用

磁共振实习一直是医学影像技术专业学生实习的难点,各教学基地对于如何提高磁共振实习质量仍处于探索阶段。文章针对学生实习过程中的困惑、磁共振实习阶段存在问题,提出大数据画像结合多种教学方法,构建医学影像技术专业学生在磁共振实习中的大数据画像模型,详细阐述实施计划及设计流程并对实行此项教学改革的显著效果进行了分析与总结。此项教学改革有效避免了传统实习模式的固化形式,对学生进行因材施教精准培养的同时可提高教师自身专业水平,实现了师生双方的共同成长,为医学影像技术专业学生实习培养提供了新的思路和方法,为培养出更多优秀的毕业生奠定坚实的基础。

创新过程视角下产学研深度融合动态利益分配机制

为构建产学研深度融合动态利益分配机制,在探讨创新过程演进与利益分配影响因素变化的基础上,将过程阶段思想引入利益分配。首先,构建完全信息条件下的两阶段收益分配的Stackelberg博弈模型,在比较产学研合作、协同创新以及产学研深度融合的基础上确定事前两阶段的最优投入、产出以及最优收益分配比例;然后,采用模糊层次分析法、模糊综合评价法和Topsis法构建基于风险分担和实际绩效的收益调整模型进一步调整收益分配比例,确定每个创新主体的最终收益分配比例;最后,通过算例证明:该利益分配机制充分考虑了产学研深度融合的特征、风险分担以及创新主体的实际绩效等因素,规避了传统利益分配平均化问题,大幅提高了创新主体投入产出的有效性以及风险承担能力。研究表明:分配系数随着创新过程演进而变化,以满足创新主体在各个融合阶段的利益需求,可为构建产学研深度融合利益分配机制提供参考。

一种光机电一体化增量式光电编码器设计

为解决现有轴柄式控制增量编码器损耗高、寿命短、抗振动能力差、可靠性低等问题,介绍一种光机电一体化的增量式光电编码器设计方案,包括32内花瓣轴套和可伸缩滚珠定位、Z型遮光盘设计和红外光敏OC开路输出电路等创新设计。通过精密结构设计和材料选择,实现了高精度32档位电信号转换。采用三维建模和有限元分析进行了结构可靠性验证。通过与国外同类产品的技术指标对比,验证数据和所达到的环境适应能力。本研究在性能、结构和成本等方面皆有优势,应用前景广阔。

产教深度融合下“机械制造技术基础”课程优化建设分析

制造业是国家经济命脉,其高质量发展在促进社会经济、保障社会稳定等方面具有重要意义。高校在开展“机械制造技术基础”课程时,需要进一步优化教学方法,提高学生的专业素质,保障教学质量,从而进一步促进制造业领域的创新发展。基于此,文章简要分析了在产教融合背景下优化“机械制造技术基础”课程的意义,分析了目前该课程可能存在的一些问题,并提出了一些优化课程的措施,以供参考。

产教融合下分类分层教学模式实践研究--以电气自动化技术专业为例

在多元化招生背景下,文章以广东工程职业技术学院电气自动化技术专业为例,分别从科学化分类分层、个性化教学设计、多样化学习资源、数字化评价体系四个方面阐述了分类分层教学模式的实施过程和成效。实践证明:分类分层教学模式一方面能尊重学生差异,因材施教,激发学生潜能;另一方面能与企业多样性岗位精准对接,提高就业质量。

光伏直流配电故障诊断及火灾风险评估技术

长期服役的光伏发电系统直流配电故障概率高、火灾风险及危害大,严重影响光伏电站的运行安全、发电与出力能力,并对电站运维提出故障与火灾精准检测的技术挑战。为此,从生产现场直流配电柜故障分析入手,揭示接触不良、绝缘劣化、故障电弧、电气火灾的演变机理;分析国内外故障电弧诊断与火灾检测技术的理论成果应对在运电站电弧火灾的有效性,提出故障电弧预诊断与火灾检测技术的应用解决方案。研究结果表明,提出的故障电弧诊断与火灾检测技术应用方案,弥补直流继电保护对串联电弧故障无法保护的不足,能够有效诊断故障电弧并检测烟雾和高温,避免火灾及其扩大事故的发生。

产教融合背景下机械制造技术基础课程教学方法研究

在校(院)产教融合模式推动下,基于虚拟仿真、思维导图、校企合作和课程思政多重模式,深入挖掘真实工程案例(加工或装配过程)中涉及的理论知识、课程思政点,以点及面,将对应的专业知识教学内容打散重构,重新形成一套以真实工程案例为需求导向的新的教学体系。新的教学体系注重知识点的横向和纵向联系,体现综合性,有利于提高学生综合运用理论知识解决复杂工程问题的能力。今后应继续优化本案例及增加新的案例,尤其应注重案例的先进性和前沿性,使综合案例的学习成为课程学习的有力跳板。