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Technological development of multi-energy complementary system based on solar PVs and MGT

Xiaojing LV, Yu WENG, Xiaoyi DING, Shilie WENG, Yiwu WENG

《能源前沿（英文）》 2018年第12卷第4期页码 509-517 doi: 10.1007/s11708-018-0598-3

摘要：

The complementary micro-energy network system consisting of solar photovoltaic power generation (solar PVs) and micro-gas turbine (MGT), which not only improves the absorption rate and reliability of photovoltaic power, but also has the advantages of low emission, high efficiency, and good fuel adaptability, has become one of the most promising distributed power systems in the field of micro grid. According to the development of current technology and the demand of actual work, this research described the domestic and foreign development of micro-energy network system based on solar PVs and MGT. Moreover, it analyzed the challenges and future development regarding the micro-energy network system in planning and design, energy utilization optimization and dispatching management, and system maintenance, respectively. Furthermore, it predicted the future development of the key technology of the multi-energy complementary system. These results will be beneficial for the progress of this field both in theory and practice.

关键词： renewable energy solar photovoltaic power generation micro gas turbine multi-energy complementary system micro-energy network

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智能电网系统中智能负载的关键作用

施毅,顾为东,施建中

《中国工程科学》 2015年第17卷第3期页码 10-13

摘要：

本文根据中国国情，提出“智能负载”这一新的理念。通过物联网将智能负载和智能电网结合起来构成“非并网多能源协同智能电网系统”，该系统的核心是将中国大量的高耗能产业通过必要的技术创新，改造成能够适应风电等可再生能源和电网输出功率巨大波动的“智能负载”，为中国政府提供一条适合国情、大幅度提高电网和发电装备利用效率，并将风电等可再生能源高效、低成本全部利用的新路径。

关键词：非并网；多能源协同；智能负载；智能电网系统

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大规模非并网风电系统理论与实践

方敏,孔祥威,施建中,顾为东

《中国工程科学》 2015年第17卷第3期页码 14-19

摘要：

本文针对我国风能等可再生能源，由于其波动性而不能大规模并入电网的难题，提出了非并网风电理论。将高耗能负载改造成为能够适应电能波动的智能负载，极大地提高了可再生能源的利用率。研究了非并网风电理论的本质和内涵，并讨论了非并网风电理论的应用情况，为我国节能减排，提高电网效率和可再生能源利用率提出了一条新路径。

关键词：非并网；多能源协同；智能负载

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非并网风电单台风机日产万吨海水淡化系统研究

施建中

《中国工程科学》 2015年第17卷第3期页码 35-40

摘要：

为了缓解我国淡水缺乏的现状，将海水进行淡化成了一个主要的研究方向。针对传统海水淡化方法属高耗能产业，并且使用常规能源，对环境易造成二次污染的缺陷，介绍了一种基于非并网多能源协同供电的海水淡化系统。该系统基于非并网风电原理，利用风、光、潮汐等绿色能源对海水淡化系统供电，提高了能源的利用效率，实现二氧化碳的零排放，具有很好的社会经济效益。本文设计并研发了一套单台风机日产万吨海水淡化系统，该系统利用1台2.5 MW风机对海水淡化系统供电，基于非并网风电理论，做到了风电高效、低成本、全部利用。

关键词：非并网；风网互补；多能源协同；海水淡化；变频

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新时代西北地区推进能源革命的战略路径研究

朱汉雄,耿笑颖,肖宇,蔡睿,刘中民

《中国工程科学》 2021年第23卷第1期页码 92-100 doi: 10.15302/J-SSCAE-2021.01.016

摘要：

新时代，维护国家能源安全和应对气候变化已经成为能源高质量发展的重点。由宁夏宁东、内蒙古鄂尔多斯、陕西榆林组成的能源“金三角”和新疆等西北地区是我国能源资源典型富集区，承担了我国能源供应的重任，同时也因其生态环境的脆弱而面临着“大开发”与“大保护”统筹发展的难题。新时代下西北地区如何通过能源革命提升服务国家战略的能级和水平，是西北地区能源发展迫切需要回答的问题。本文在分析西北地区资源、产业和区域优势与挑战的基础上，结合能源革命要求，提出西北地区实施能源革命应战略定位于国家多能融合技术示范基地、国家煤制燃料战略储备基地和国家综合能源供应基地，多能融合是实现西北地区战略定位的有效路径。建议围绕化石能源清洁高效开发利用及耦合替代，可再生能源多能互补与规模应用和低碳化、智能化多能融合三条主线，推进六项融合示范举措，共同实现以多能融合为特征，以能源技术革命为引领的能源革命“西北方案”。

关键词：能源“金三角”，能源革命，多能融合，战略路径

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Optimal dispatch of multi energy system using power-to-gas technology considering flexible load on user

Zi LING, Xiu YANG, Zilin LI

《能源前沿（英文）》 2018年第12卷第4期页码 569-581 doi: 10.1007/s11708-018-0595-6

摘要：

The relation between power-to-gas technology (P2G) and energy interconnection becomes increasingly close. Meanwhile, the participation of flexible load on user side in system optimization has attracted much attention as an efficient approach to relieve the contradiction between energy supply and energy demand. Based on the concept of energy hub, according to its series characteristic, this paper established a generic multi-energy system model using the P2G technology. The characteristic of flexible load on user side was considered and optimal dispatch analysis was made, so as to reduce the cost, to reasonably dispatch the flexible load, to reduce the discharge, to enhance the new energy output, and to increase the power-to-gas conversion efficiency. Finally, a concrete analysis was made on the optimal dispatch result of the multi-energy system using the P2G technology considering flexible load on user side in the calculating example, and optimal dispatch of the system was verified via four different scenarios. The results indicate that cooperative dispatch of multi-energy system using the P2G technology considering flexible load on user side is the most economic, and can make a contribution to absorption of new energy and P2G conversion. In this way, environmental effects and safe and stable operation of the system can be guaranteed.

关键词： multi-energy system energy hub series characteristic optimal dispatch flexible load

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多能融合技术体系助力碳中和的路径探索

李婉君, 朱汉雄, 肖宇, 蔡睿, 刘中民

《工程（英文）》 2022年第19卷第12期页码 11-13 doi: 10.1016/j.eng.2021.09.024

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张又中：计及电转气和碳捕获的多能源系统多目标运行优化研究（2020年7月12日）

2022年06月10日

关键词：能源

激光再制造技术与应用发展研究

姚喆赫,姚建华,向巧

《中国工程科学》 2020年第22卷第3期页码 63-70 doi: 10.15302/J-SSCAE-2020.03.011

摘要：

激光再制造技术作为制造技术创新的前沿领域，深刻改变着高端装备的设计与运行方式，是绿色再制造的重要支撑技术，是促进制造产业可持续发展的重要力量。本文从激光再制造技术的宏观需求入手，梳理了激光再制造技术的发展及应用现状，凝练了激光再制造技术和产业在发展过程中面临的挑战，进而提出了面向2025 年、2035 年以及2050 年的分阶段发展目标。针对当前我国激光再制造技术在专用材料、核心器件、再制造理念与标准体系等方面存在的问题与挑战，研究提出：加强战略层面的积极引导；构建激光增材再制造材料基因组体系；完善标准化体系和高层次应用型人才培养体系；加大应用推广力度，引导行业整合；建立合作平台，加快关键共性技术创新发展，为激光再制造技术及其产业发展提供支撑。

关键词：激光再制造，多能场，现场再制造，全生命周期

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风电三种利用模式分析

孔祥威,顾为东

《中国工程科学》 2015年第17卷第3期页码 20-23

摘要：

本文分析了风电的三种利用模式，详细阐述了非并网风电理论，探讨了风电等可再生能源通过多能源协同供电应用于高耗能产业，即非并网风电的内涵。研究分布式发电和非并网风电理论的关系，分布式发电作为非并网风电的一种表现形式，将非并网风电与现存电力系统构建为一个完善的电力系统框架。

关键词：非并网；多能源协同；分布式发电；智能负载

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我国风电高效利用技术趋势及发展建议

石文辉,白宏,屈姬贤,王伟胜,黄其励

《中国工程科学》 2018年第20卷第3期页码 51-57 doi: 10.15302/J-SSCAE-2018.03.008

摘要：

我国风电发展取得了举世瞩目的成绩，风电装机规模和发电量仅次于煤电和水电，正在实现从补充电源向替代电源的转变，未来有望在能源发展中占主导地位。为实现未来我国高比例新能源发展目标，促进风电可持续发展，本文围绕实现我国风电高效利用，阐述了我国目前风电利用现状及存在的问题，从大规模风电集群控制与优化调度、风电综合利用、多能互补利用、分布式接入与控制等几个技术方向，提出了未来我国风电高效利用的技术趋势，从风电与大能源电力系统发展、市场机制建立、行业管理和技术标准制定等方面提出促进风电高效利用的相关建议。

关键词：风电高效利用优化调度与控制多能互补系统风电综合利用分布式接入与控制

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Multi-objective optimization of a hybrid distributed energy system using NSGA-II algorithm

Hongbo REN, Yinlong LU, Qiong WU, Xiu YANG, Aolin ZHOU

《能源前沿（英文）》 2018年第12卷第4期页码 518-528 doi: 10.1007/s11708-018-0594-7

摘要：

In this paper, a multi-objective optimization model is established for the investment plan and operation management of a hybrid distributed energy system. Considering both economic and environmental benefits, the overall annual cost and emissions of CO₂ equivalents are selected as the objective functions to be minimized. In addition, relevant constraints are included to guarantee that the optimized system is reliable to satisfy the energy demands. To solve the optimization model, the non-dominated sorting generic algorithm II (NSGA-II) is employed to derive a set of non-dominated Pareto solutions. The diversity of Pareto solutions is conserved by a crowding distance operator, and the best compromised Pareto solution is determined based on the fuzzy set theory. As an illustrative example, a hotel building is selected for study to verify the effectiveness of the optimization model and the solving algorithm. The results obtained from the numerical study indicate that the NSGA-II results in more diversified Pareto solutions and the fuzzy set theory picks out a better combination of device capacities with reasonable operating strategies.

关键词： multi-objective optimization hybrid distributed energy system non-dominated sorting generic algorithm II fuzzy set theory Pareto optimal solution

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Active-reactive power scheduling of integrated electricity-gas network with multi-microgrids

《能源前沿（英文）》 2023年第17卷第2期页码 251-265 doi: 10.1007/s11708-022-0857-1

摘要： Advances in natural gas-fired technologies have deepened the coupling between electricity and gas networks, promoting the development of the integrated electricity-gas network (IEGN) and strengthening the interaction between the active-reactive power flow in the power distribution network (PDN) and the natural gas flow in the gas distribution network (GDN). This paper proposes a day-ahead active-reactive power scheduling model for the IEGN with multi-microgrids (MMGs) to minimize the total operating cost. Through the tight coupling relationship between the subsystems of the IEGN, the potentialities of the IEGN with MMGs toward multi-energy cooperative interaction is optimized. Important component models are elaborated in the PDN, GDN, and coupled MMGs. Besides, motivated by the non-negligible impact of the reactive power, optimal inverter dispatch (OID) is considered to optimize the active and reactive power capabilities of the inverters of distributed generators. Further, a second-order cone (SOC) relaxation technology is utilized to transform the proposed active-reactive power scheduling model into a convex optimization problem that the commercial solver can directly solve. A test system consisting of an IEEE-33 test system and a 7-node natural gas network is adopted to verify the effectiveness of the proposed scheduling method. The results show that the proposed scheduling method can effectively reduce the power losses of the PDN in the IEGN by 9.86%, increase the flexibility of the joint operation of the subsystems of the IEGN, reduce the total operation costs by $32.20, and effectively enhance the operation economy of the IEGN.

关键词： combined cooling heating and power (CCHP) integrated energy systems (IES) natural gas power distribution system gas distribution system

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Multi-objective dynamic optimization model for China’s road transport energy technology switching

Dan GAO , Zheng LI , Feng FU , Linwei MA

《能源前沿（英文）》 2009年第3卷第3期页码 247-253 doi: 10.1007/s11708-009-0048-3

摘要： Deducting the future switching of the road transport energy technology is one of the key preconditions for relative technology development planning. However, one of the difficulties is to address the issue of multi-objective and conflicting constrains, e.g., minimizing the climate mitigation or minimizing economic cost. In this paper, a dynamic optimization model was established, which can be used to analyze the road transport energy technology switching under multi-objective constrains. Through one case study, a series of solutions could be derived to provide decision-makers with the flexibility to choose the appropriate solution with respect to the given situation.

关键词： technology switching transport energy system multi-objective CO₂ mitigation

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分布式能量系统浅析

宋之平

《中国工程科学》 2004年第6卷第12期页码 78-84

摘要：

现代分布式能量系统的出现是能源领域涉及可持续发展战略的一件大事。讨论了有关这一系统的一些基本概念，把它定义为“位于或临近用户中心、不以大规模、远距离输送电力为目的并具有环境相容性的电力总能系统”。分布式能量系统为热电联产和多联产的有效实施提供了最有利的系统形式，以分布式能量系统的方式耗用天然气可提高其经济性和与环境的相容性。认为，从长远的观点应把洁净煤也视为分布式能量系统的重要一次能源。微型透平是近年能源技术的一大成就，但在小型原动机领域中，内燃机仍具有旺盛的生命力。选择在发展大型集中式能量系统过程的同时不失时机、因地制宜地发展分布式能量系统，把它放在与之并行不悖且相辅相成的地位，以促进我国能源事业的可持续化发展。

关键词：分布式能量系统可持续发展战略热电联产多联产