Research on the Application of New Energy Photovoltaic Power Generation Technology

With the rapid development of technology and economy,the demand for energy in society is increasing.People are gradually realizing that fossil energy is limited,and the development of new energy may also face situations where it cannot meet social needs.The problem of resource shortage is gradually exposed to people.Therefore,the development of usable new energy has become an urgent problem for society to solve.At present,electricity is the most widely used energy source worldwide and photovoltaic power generation technology is gradually becoming well-known.As an emerging industry,the development of photovoltaic power generation still requires continuous promotion by national and social policies to be extended to various industries and ensure the stability of its energy supply.This article mainly outlines the principles,characteristics,and advantages of photovoltaic power generation,and briefly explains the current technology types and application aspects of photovoltaic power generation to contribute to its promotion and better serve all aspects of social life with new energy.

Application of Power Electronics Converters in Renewable Energy

Against the backdrop of global energy shortages and increasingly severe environmental pollution,renewable energy is gradually becoming a significant direction for future energy development.Power electronics converters,as the core technology for energy conversion and control,play a crucial role in enhancing the efficiency and stability of renewable energy systems.This paper explores the basic principles and functions of power electronics converters and their specific applications in photovoltaic power generation,wind power generation,and energy storage systems.Additionally,it analyzes the current innovations in high-efficiency energy conversion,multilevel conversion technology,and the application of new materials and devices.By studying these technologies,the aim is to promote the widespread application of power electronics converters in renewable energy systems and provide theoretical and technical support for achieving sustainable energy development.

Steady-State Analysis of Grid-Connected New Energy Power Plants

In order to ease the fossil energy crunch,new energy sources need to be fully utilized.Clean energy sources such as wind,light,and nuclear energy are important tools to solve environmental and energy problems.However,in the process of researching new energy farms,there are some problems when they are integrated into the power system.In order to ensure the stability of new energy power plants,it is necessary to conduct an in-depth analysis of the grid connection technology of new energy farms.In the study,it is necessary to learn about the specific problems of the stability of the grid connection of new energy power plants,and to clarify the specific application of the grid connection technology of new energy power plants from the application principle and advantages of the grid connection technology of new energy power plants.Through simulation experiments,the positive effect of grid connection technology of new energy power plants in improving the stability of power systems was determined.

Life Cycle Assessment,Estimation and Comparison of Greenhouse Gas Mitigation Potential of New Energy Power Generation in China

From the perspective of life cycle assessment （LCA）, the development, construction, and operation of all kinds of new energy power generation technologies release greenhouse gas （GHG） emissions. This sparks concerns about the lowcarbon nature of the new energy power generation technologies. Based on national and international literature review, this paper estimates and compares the GHG emission factors of traditional thermal power generation and new energy power generation technologies in China with the LCA approach. The GHG mitigation potential of new energy power generation technologies as substitution for traditional thermal power generation in China was evaluated, according to the objectives of new energy power generation of the national development planning. The results show that the GHG emission factors of new energy power generation axe much lower than that of traditional thermal power generation even with LCA accounting, and the GHG mitigation potential of new energy substitution is huge.

Research of Thermal Energy Storage Technology in the Solar Thermodynamic Power

Recently, although renewable energy has a great development, primary source is still thermal power generation, which uses fossil fuel as the energy source. Supply and demand of fossil fuel are essential for social and economy development. However, development pattern that excessively relies on the natural source is impossible to provide a sustainable development way for us. As a result, we should combine renewable energy with new energy technology as the aim of economy. It means that it is urgent to exploit new energy. Meanwhile, the ratio of energy waste cannot be ignored. How to decrease energy waste is also significant. Construction sector costs a lot of energy, which is mainly used for heating and refrigeration. In the new energy generation technology, thermal energy can be transformed to electricity with combination of BIPV and thermal energy storage technology. Photovoltaic generation has a great progress in the building construction. As a result, the thermal energy storage technology becomes the key link in the production chain. In this paper, feasibility of applying phase-change material (PCM) in the thermal energy storage will be analyzed. And analysis results are provided with a relative mathematical model.

New generation traction power supply system and its key technologies for electrified railways

Unlike the traditional traction power supply system which enables the electrified railway traction sub- station to be connected to power grid in a way of phase rotation, a new generation traction power supply system without phase splits is proposed in this paper. Three key techniques used in this system have been discussed. First, a combined co-phase traction power supply system is applied at traction substations for compensating negative sequence current and eliminating phase splits at exits of substations; design method and procedure for this system are presented. Second, a new bilateral traction power supply technology is proposed to eliminate the phase split at section post and reduce the influence of equalizing current on the power grid. Meanwhile, power factor should be adjusted to ensure a proper voltage level of the traction network. Third, a seg- mental power supply technology of traction network is used to divide the power supply arms into several segments, and the synchronous measurement and control technology is applied to diagnose faults and their locations quickly and accurately. Thus, the fault impact can be limited to a min- imum degree. In addition, the economy and reliability of the new generation traction power supply system are analyzed.

Research on New Compressed Air Energy Storage Technology

In recent years, wind power generation and photovoltaic power generation have been developing rapidly, and the installed capacity of the new resources generation has been keeping a fast growth every year. But with the incorporation into the grid, the new resources generation that has the properties such as randomness and volatility causes certain risks to the power grid, which results in the falling of the incorporation proportion instead of rising. This paper describes the current status and development problems of the new energy in China, and gives a brief introduction of characteristics of various energy storage technologies. This paper focuses on the analysis of the compressed air energy storage technology in recent years and new developments and the latest technology at home and abroad, additionally, the paper introduces a new concept of the compressed air energy storage system.

Feasibility Limits for a Hybrid System with Ocean Wave and Ocean Current Power Plants in Southern Coast of Brazil

Some types of renewable energy have been experiencing rapid evolution in recent decades, notably among the energies associated with the oceans, such as wave and current energies. The development of new energy conversion technologies for these two forms of energy has been offering a large number of equipment configurations and plant geometries for energy conversion. This process can be implemented aiming at the result of feasibility studies in places with energy potentials, establishing minimum feasibility limits to be reached. This work aims to contribute in this sense with a feasibility study of a system with ocean wave power plants and with socio-current power plants to be operated on the southern coast of Brazil. This study evaluates a hybrid system with contributions from energy supplies obtained from wave plants and current plants, connected to the grid and supplying the demand of the municipalities in the North Coast region of the State of Rio Grande do Sul, the southernmost state of Brazil. The study was carried out with simulations with the Homer Legacy software, with some adaptations for the simulation of ocean wave plants and ocean current plants. The results indicate that the ocean wave power plants were viable in the vast majority of simulated scenarios, while the ocean current power plants were viable in the scenarios with more intense average ocean current speeds and with more expensive energy acquired from the interconnected system.

Integrated Renewable Energy Solutions for Aquaculture Processing Enerfish

The European Union Framework Programme 71 Enerfish project aims to demonstrate a new poly-generation application with renewable energy sources for the fishery industry in Vietnam. The fish processing plant under consideration can be made by energy self-sufficient when all fish waste oil is processed into biodiesel and further converted to electricity and heat （for cooling） in a CHP （combined heat and power） unit. The purpose of the present paper is to discuss the profitability of such plants in southeast Asia. The economic model shows that electricity production is, due to the low electricity tariff, uneconomical （except during electricity blackout）, even if cogeneration heat can be utilized. This prompt a design of the plant whereby the necessary heat for the biodiesel process is taken from the waste heat produced by the compressors of a CO2 cooling system. According to the calculations and assumptions of the present study, the profitability of biodiesel production from fish cleaning wastes in Vietnam depends strongly on the market prices for fish waste and fish oil. Different business case scenarios are described.

新型电力系统长时储能技术综述

随着未来我国电力系统中可再生能源渗透率的提高,系统稳定性将应对更加严峻的挑战。长时储能技术在电力系统中起到平衡电网需求、提高电网稳定性、促进可再生能源的消纳、推动绿色低碳发展等作用。长时储能在系统的电源侧、电网侧、负荷侧都有着广泛的应用,对我国新型电力系统的发展意义重大。首先,介绍了目前新型电力系统的特点以及发展趋势,分析长时储能技术在新型电力系统中所具备的支撑作用;其次,分别总结了压缩空气储能、锂离子电池储能、液流电池储能、熔盐储能、氢储能5种长时储能的技术原理及路线、现有的示范应用项目及未来发展趋势,分析了各种长时储能技术的优势和不足;最后,对新型电力系统中长时储能技术未来的应用前景进行了展望。

新能源发电系统控制技术研究

随着经济社会发展,人们用电需求在不断增长,需要将有限的电能资源进行合理利用,找寻新的发电技术和途径,新能源电力技术及控制技术需要得到新的发展。在发电、输电、配电及用电环节中,电力机制发挥着极为重要的作用,能够组建起电能生产与消费的一体化环节。可以运用发电装置将自然界中的可再生能源转变成为电能,用户可以通过输电系统获得电能,给日常生活提供能量供应。传统发电方式难以大规模存储电能,需要控制电能输出方式。新能源发电与传统发电方式存在较大的差异性,新能源的发电输出功率是可控的。该文主要叙述新能源电力系统运行的基本特点,并说明电力系统的主要控制技术及控制策略,为后续新能源电力工程的顺利发展奠定强有力基础。

面向区块链技术应用的能源交易系统效果评价

随着我国能源体系的转型发展与新型电力系统的建设,以清洁能源为主的分布式能源成为重要供能方式。传统能源市场交易方式单一,大多采用集中化的运营管理方式,无法解决分散式能源系统的交易需求。区块链技术作为新兴技术手段,其去中心化、不可篡改等技术特点与分布式能源系统相契合,能够解决新型能源交易现存的一些问题。基于此,提出一种基于区块链技术的新型能源交易流程,给出智慧能源一体化、智慧能源托管、区域共享能源3种商业模式,并将能源交易服务业务划分为运维管理服务、系统改造服务以及市场交易服务,构建区块链能源交易系统效果评价指标体系。应用层次分析-模糊综合评价方法进行评价,通过算例仿真分析,证明基于区块链技术的能源交易系统效果评价指标体系的有效性。

新时代下热能与动力机械制造工艺学课程思政教学改革与实践

理工科专业的课程思政教学是实现全员育人、全程育人、全方位育人的重要途径。热能与动力机械制造工艺学作为能源动力类专业的核心课程之一,在新时代背景下其思政建设显得尤为重要。该文围绕热能与动力机械制造工艺学课程,分析当前该课程教学中存在的问题;通过深入挖掘课程中的思政元素,将其有机融入教学内容和教学方法中,探讨课程思政存在问题的解决方案,并介绍该课程思政建设的实践成效。研究表明,深入挖掘专业课程的思政元素并将其融入教学,能够提升学生的思想道德素质、民族自豪感、社会责任感、历史使命感,同时也可促进学生对专业知识的学习。该文为新时代下能源动力类专业课程思政建设提供理论依据和实践指导。

颠覆性能源技术赋能新质生产力的逻辑机理与作用路径

面向新一轮科技革命和产业革命,颠覆性能源技术在新质生产力的培育形成和现代产业体系的构建过程中发挥着核心动力作用。同时,面向碳达峰碳中和的国际环境和日益激烈的国际竞争,我国要实现从能源大国到能源强国的转变,以及新旧能源的有序衔接,关键在于颠覆性能源技术的培育、形成和效用发挥,但如何科学地认知颠覆性能源技术,其赋能新质生产力的逻辑机理和作用路径有待进一步探究。因此,本文从颠覆性能源技术的内涵、外延出发,梳理了颠覆性能源技术与新质生产力的相关文献,提炼了颠覆性能源技术的特性与模式,进一步结合新质生产力的培育形成过程,从颠覆性能源技术推动能源结构优化、产业结构深度转型升级、生产要素优化组合三方面赋能新质生产力的全过程厘清了颠覆性能源技术赋能新质生产力的逻辑机理,提出了颠覆性能源技术与新质生产力之间的赋能闭环。在此基础上,结合能源行业发展现状与未来趋势,进一步选取大规模绿电绿氢、CCUS、可控核聚变三类颠覆性能源技术探讨了其赋能新质生产力的作用路径,验证了二者赋能的逻辑机理。通过颠覆性能源技术赋能新质生产力的机制研究和实例验证探讨了二者赋能的逻辑机理与作用路径,可为颠覆性能源技术的产出和新质生产力的培育形成提供参考借鉴。

新能源汽车动力电池产业发展特点与趋势分析

文章通过研究和分析我国新能源汽车动力电池产业的发展特点及其发展趋势,讨论了产业链协同发展、新型电池技术的发展和应用、电池回收利用技术和产业链不完善等问题。提出了新能源汽车动力电池产业未来的政府在制定政策上的建言和未来发展建议。

新能源汽车动力传动系统的设计研究

深入研究了新能源汽车动力传动系统的设计与优化,关注于混合动力的复杂性、电动驱动的高效性、多元化能源的融合以及协同控制策略等关键领域。通过引入先进的能源存储技术和智能化混合动力控制系统,旨在提高系统性能和能源利用效率。同时对多能源融合的协同性进行了深入研究,探索多种能源形式的有机整合,为汽车动力系统提供更灵活、可持续的能源供给。

新能源汽车动力电池冷却技术研究综述

通过综述新能源汽车动力电池冷却技术包括空气冷却技术、液体冷却技术、变相材料冷却、热管冷却技术以及冷媒直冷冷却,分析各种技术的优势、劣势及应用情况,总结动力电池冷却技术的研究现状并对其发展趋势进行展望。未来,新能源汽车动力电池冷却技术需要对冷却介质进行研发,以取代现有的液冷系统,同时还需要将两种及以上的冷却方式相结合并研究更高效灵敏且智能化的预警装置,以得到更好的冷却效果。

电力电量平衡分析及其加速求解技术的发展、应用与展望

随着电力系统能源转型的加速推进,新能源渗透率显著提高,多区系统互联更加密切,多能源系统耦合程度不断增强,电力市场改革逐步深入,使得新型电力系统中电力电量平衡分析更加复杂。因此,总结归纳电力电量平衡分析技术的已有进展与典型应用,结合新型电力系统的主要特点对电力电量平衡分析技术进行展望,将有助于应对未来高维不确定性下的新型电力系统电力电量平衡问题。围绕电力电量平衡问题,首先介绍其常用的几种分析方法,在此基础上针对多时间尺度下电力电量平衡分析技术进行归纳,并总结相应的加速求解技术,然后对电力电量平衡典型应用场景进行综述,最后面向新型电力系统,对电力电量平衡分析的未来发展方向进行了展望。

基于数字孪生技术的新型电力系统数字化

随着“双碳”目标的提出,大规模的清洁能源、电力电子设备和新型负荷将接入电力系统,传统的电力系统管理控制模式难以应对双侧随机性、波动性增强等问题,电力系统的安全稳定运行迎来巨大挑战。数字孪生技术作为重要的数字化手段,成为电力系统转型升级新方法。针对新型电力系统内在机理发生的深刻复杂变化,综述了数字孪生的发展历程以及其在电力系统领域的研究现状,并从新型电力系统数字化需求、数字建模方法、数字化平台建设3个层面研究了电力系统数字化转型进程。最终,提出了以数字孪生技术为核心的新型电力系统建模方法和框架。

面向新型电力系统的电能计量技术

简述了新型电力系统呈现的新特性,分析了电能准确计量面临的突出问题。针对新型电力系统中对电能计量的新需求,提出了电能计量技术的创新发展方向,给出了一种多源互补场景的电能计量应用架构。