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Significant potential of Solid Oxide Fuel Cell systems for distributed power generation and carbon neutrality

《能源前沿（英文）》 2022年第16卷第6期页码 879-882 doi: 10.1007/s11708-022-0850-8

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Data-driven distribution network topology identification considering correlated generation power of distributed

《能源前沿（英文）》 2022年第16卷第1期页码 121-129 doi: 10.1007/s11708-021-0780-x

摘要： This paper proposes a data-driven topology identification method for distribution systems with distributed energy resources (DERs). First, a neural network is trained to depict the relationship between nodal power injections and voltage magnitude measurements, and then it is used to generate synthetic measurements under independent nodal power injections, thus eliminating the influence of correlated nodal power injections on topology identification. Second, a maximal information coefficient-based maximum spanning tree algorithm is developed to obtain the network topology by evaluating the dependence among the synthetic measurements. The proposed method is tested on different distribution networks and the simulation results are compared with those of other methods to validate the effectiveness of the proposed method.

关键词： power distribution network data-driven topology identification distributed energy resource maximal information coefficient

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Experimental investigation of a novel micro gas turbine with flexible switching function for distributedpower system

Xiaojing LV, Weilun ZENG, Xiaoyi DING, Yiwu WENG, Shilie WENG

《能源前沿（英文）》 2020年第14卷第4期页码 790-800 doi: 10.1007/s11708-020-0691-2

摘要： Micro gas turbine (MGT) is widely used in small-scale distributed power systems because of its low emissions and fuel flexibility. However, the under-utilization of its exhaust heat and the low electric efficiency are the main bottlenecks that restrict its application. Additionally, the flexible switching between the power generated by the MGT and the power grid is also a key factor for keeping the secure operation of a distributed power station. Therefore, this paper conducted some experimental investigations of a 30 kW MGT to provide reference solutions for the above issues. This MGT is located at Shanghai Jiao Tong University (SJTU), which is designed by the Gas Turbine Research Institute of SJTU, and is manufactured by a turbo-machinery factory in Chongqing, China. The demonstration prototype is mainly composed of a single stage centrifugal compressor, a radial turbine, a combustor, a high-speed permanent magnet generator, and a control system. The results show that the MGT can achieve steady operation at a low rotational speed from 10000 r/min to 34000 r/min in the case of using oil lubricated bearings, which can greatly reduce the economic cost compared with the use of air bearings. At the same time, the ignition success rate of combustion chamber (CC) reaches 98% at a low rotational speed, and a wide range of stable combustion area can be obtained, because of the novel design method of combustor by referencing the way applied in an axial flow aero-engine. The MGT generating set can achieve functions, such as starting up, ignition, stable operation, loaded operation, grid-connection and stopping. This system also can realize flexibly switching from the start motor mode to the generator mode, and from grid-connected mode to off-grid mode, because the innovative multi-state switching control system is adopted. The above research work can make our state master independent intellectual property rights of micro gas turbine, rather than continue to be subject to the technological monopoly of the developed states, which can provide theoretical and experimental support for the industrialization of MGT in China.

关键词： gas turbine flexible switching system control system distributed power system emission test

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三峡漂浮物分布式供能系统研究

李年君

《中国工程科学》 2010年第12卷第6期页码 99-103

摘要：

长江漂浮物是威胁三峡电站运行安全的重要问题。在对三峡漂浮物数量和特点的调查和分析基础上，提出了以漂浮物能源化利用为主线，污染物治理和资源回收为两翼的三峡漂浮物生态能源系统路线，通过利用分布式能源技术系统可以为用户侧提供更可靠、清洁的高品质能源服务。研究结果表明，充分利用三峡漂浮物进行冷热电联供，可以在实现三峡库区污染治理的同时，对三峡漂浮物进行资源化利用，分布式供能系统年处理漂浮物4.7×10⁴～9.5×10⁴ t，节能1.3×10⁴～3.6×10⁴ t标煤，投资回收期4.5～8年，具有良好的技术经济性能。

关键词：三峡漂浮物污染分布式供能

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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

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Economic analysis of a hybrid solar-fuel cell power delivery system using tuned genetic algorithm

Trina SOM, Niladri CHAKRABORTY

《能源前沿（英文）》 2012年第6卷第1期页码 12-20 doi: 10.1007/s11708-012-0172-3

摘要： An economic evaluation of a network of distributed energy resources (DERs) comprising a microgrid structure of power delivery system in an Indian scenario has been made. The mathematical analysis is based on the application of tuned genetic algorithm (TGA). The analyses for optimal power operation pertaining to minimum cost have been made for two cases in Indian power delivery system. The first case deals with the consumers’ individual optimal operation of DERs, while in the second one, consumers altogether form a microgrid with the optimal supply of power from DERs. The total annual costs for these two cases are found to be economically competitive and encouraging. A reduction of approximately 5.7% in the annual cost has been obtained in the case of microgid system than that in the separately operating consumers’ system for a small locality of India. It is observed that the application of TGA results in a reduction of the minimum cost depicting an improved outcome in terms of energy economy.

关键词： distributed energy resources (DERs) microgrid tuned genetic algorithm (TGA)

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光无线能量传输技术综述 Review

Syed Agha Hassnain MOHSAN1, Haoze QIAN2, Hussain AMJAD3

《信息与电子工程前沿（英文）》 2023年第24卷第6期页码 767-800 doi: 10.1631/FITEE.2100443

摘要：近几十年来，开创性的光无线能量传输（OWPT）技术在学术界和业内专家中都得到广泛关注。通过激光二极管（LDs）对操作设备或电池远程供电有很多优点。远程LDs可以消除额外携带电池的负担，同时可以通过减少电池更换与充电的时间来节省任务时间。然而激光能量传输（LPT）除了具有吸引人的优点外，因其传输效率低，仍然是一项具有挑战性的任务。此篇综述讨论了OWPT的必要性和可行性，并讨论了其工作原理、系统设计和组件等。此外，还表明了OWPT是为物联网（IoT）终端供电的必要部分，强调了动态OWPT的影响。本文概述了几种OWPT技术，包括光波束赋形、分布式激光充电（DLC）、自适应分布式激光充电（ADLC）、同步无线信息与功率传输（SLIPT）、物对物（T2T）OWPT和高强度激光能量束（HILPB），还论述了OWPT系统的激光选择、危害分析和接收器太阳能电池的选择。最后，讨论了一系列公开挑战和应对措施。我们相信，此篇综述将有助于整合研究和消除技术不确定性，从而促进OWPT技术发展的进步和创新。

关键词：无线能量传输；光无线能量传输；分布式激光充电；激光二极管；太阳能电池

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Multi-timescale optimization scheduling of interconnected data centers based on model predictive control

《能源前沿（英文）》 doi: 10.1007/s11708-023-0912-6

摘要： With the promotion of “dual carbon” strategy, data center (DC) access to high-penetration renewable energy sources (RESs) has become a trend in the industry. However, the uncertainty of RES poses challenges to the safe and stable operation of DCs and power grids. In this paper, a multi-timescale optimal scheduling model is established for interconnected data centers (IDCs) based on model predictive control (MPC), including day-ahead optimization, intraday rolling optimization, and intraday real-time correction. The day-ahead optimization stage aims at the lowest operating cost, the rolling optimization stage aims at the lowest intraday economic cost, and the real-time correction aims at the lowest power fluctuation, eliminating the impact of prediction errors through coordinated multi-timescale optimization. The simulation results show that the economic loss is reduced by 19.6%, and the power fluctuation is decreased by 15.23%.

关键词： model predictive control interconnected data center multi-timescale optimized scheduling distributed power supply landscape uncertainty

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一种新型的部分遮挡和非匹配条件下最大功率点跟踪光伏子模块级功率平衡拓扑结构 Article

Mustafa GOKDAG,Mehmet AKBABA

《信息与电子工程前沿（英文）》 2016年第17卷第12期页码 1388-1396 doi: 10.1631/FITEE.1500322

摘要：部分遮挡和串联模块（或子模块）的非匹配条件可在整个光伏系统中导致功率曲线非凸且出现多个局部极值和峰值功率下降的现象。通过功率传输，可将各子模块的工作电压拉平；这样的功率收集操作可生成凸功率曲线，提升光伏系统的峰值功率。本文所述拓扑结构受益于开关电容（Switched capacitor, SC）转换器的概念，是一种子模块级功率平衡概念的具体应用。与现有研究成果相比，其创新点包含无遮挡时停止开关操作、串联线路级可拓展性以及减少功率电子元件使用量。功率电子元件使用量的减少是通过两个子模块共享一个SC转换器的方式实现的，这也能带来降低功率器件能量损耗、降低成本和电路体积的优势。本文给出了所述拓扑结构的插入损耗的理论式，并通过PSpice仿真和原型电路的实验评估，证明了损耗理论解的正确性。这也表明，通过使用所述拓扑结构，有可能提取出部分遮挡的光伏线路的几乎所有可用能量，并将其传输至负载端。

关键词：子模块级最大功率点跟踪（Sub-module-level maximum power point tracking MPPT）；差分功率处理（Differential power processing

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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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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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Organizational dynamics in adaptive distributed search processes: effects on performance and the role

Friederike WALL

《信息与电子工程前沿（英文）》 2016年第17卷第4期页码 283-295 doi: 10.1631/FITEE.1500306

摘要： In this paper, the effects of altering the organizational setting of distributed adaptive search processes in the course of search are investigated. We put particular emphasis on the complexity of interactions between partial search problems assigned to search agents. Employing an agent-based simulation based on the framework of NK landscapes we analyze different temporal change modes of the organizational set-up. The organizational properties under change include, for example, the coordination mechanisms among search agents. Results suggest that inducing organizational dynamics has the potential to increase the effectiveness of distributed adaptive search processes with respect to various performance measures like the final performance achieved at the end of the search, the chance to find the optimal solution of the search problem, or the average performance per period achieved during the search process. However, results also indicate that the mode of temporal change in conjunction with the complexity of the search problem considerably affects the order of magnitude of these beneficial effects. In particular, results suggest that organizational dynamics induces a shift towards more exploration, i.e., discovery of new areas in the fitness landscape, and less exploitation, i.e., stepwise improvement.

关键词： Agent-based simulation Complexity Coordination Distributed search NK landscapes

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DoS攻击下信息物理电网系统的弹性分布式经济调度 Research Articles

杨飞生1,2,梁旭辉2,管晓宏1

《信息与电子工程前沿（英文）》 2021年第22卷第1期页码 1-140 doi: 10.1631/FITEE.2000201

摘要：本文研究焦点是恶意拒绝服务（DoS）攻击下智能电网经济调度问题。以发电实际情况为出发点，建立考虑环境污染代价的新型分布式优化模型。为节省有限的带宽资源，提出一种新的分布式事件触发方案，以在通信网络遭受恶意DoS攻击时保持信息物理电网系统的弹性和经济性。然后，根据梯度下降算法设计一种多智能体一致性协议解决最小化问题，并从最优性和稳定性角度分析系统发电成本最小化的前提。最后，通过单区域10发电机组模拟实验验证了理论结果。

关键词：经济调度；拒绝服务（DoS）攻击；弹性事件触发方案；分布式优化

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分布式能源管理中完全灵活的负荷——虚拟电厂中太阳能光伏、电池、负荷和价值叠加

Andrew Mears, James Martin

《工程（英文）》 2020年第6卷第7期页码 736-738 doi: 10.1016/j.eng.2020.07.004

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Analysis of the current situation of environmental policy of China and establishment of distributed environmental

Chaoyang FU,Wangfeng LI

《环境科学与工程前沿（英文）》 2015年第9卷第2期页码 310-316 doi: 10.1007/s11783-014-0658-9

摘要： In this study, China’s current macro-environmental policies as well as their implementation and management tools are analyzed. By using the basic economic methodology, detailed studies are conducted focusing on the implementation effect of contemporary China’s typical environmental policy of the total pollutant discharge quantity control type, and also the two types of environmental management tools are compared from the perspective of implementation costs and policy uncertainty. By introduction of distributed management tools into the implementation of environmental policies, market-oriented means and the methods of economic analysis are introduced into environmental policy decision-making mechanisms, which could afford a new method for changing the current relatively low efficiency of environmental policy, solving the problem of “government failure” in environmental policy implementation, and providing a new way to make environmental policy system more flexible and more efficient. It is of great practical significance to solve China's current structural, complex and accumulative environmental problems.

关键词： environmental policy distributed environment policy distributed parameter model lumped parameter model