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Cluster voltage control method for “Whole County” distributed photovoltaics based on improved differential

《能源前沿（英文）》页码 782-795 doi: 10.1007/s11708-023-0905-8

摘要： China is vigorously promoting the “whole county promotion” of distributed photovoltaics (DPVs). However, the high penetration rate of DPVs has brought problems such as voltage violation and power quality degradation to the distribution network, seriously affecting the safety and reliability of the power system. The traditional centralized control method of the distribution network has the problem of low efficiency, which is not practical enough in engineering practice. To address the problems, this paper proposes a cluster voltage control method for distributed photovoltaic grid-connected distribution network. First, it partitions the distribution network into clusters, and different clusters exchange terminal voltage information through a “virtual slack bus.” Then, in each cluster, based on the control strategy of “reactive power compensation first, active power curtailment later,” it employs an improved differential evolution (IDE) algorithm based on Cauchy disturbance to control the voltage. Simulation results in two different distribution systems show that the proposed method not only greatly improves the operational efficiency of the algorithm but also effectively controls the voltage of the distribution network, and maximizes the consumption capacity of DPVs based on qualified voltage.

关键词： distributed photovoltaics (DPVs) cluster partitioning improved differential evolution algorithm voltage control consumption capacity of distributed photovoltaics

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Sliding window games for cooperative building temperature control using a distributed learning method

Zhaohui ZHANG, Ruilong DENG, Tao YUAN, S. Joe QIN

《工程管理前沿（英文）》 2017年第4卷第3期页码 304-314 doi: 10.15302/J-FEM-2017045

摘要： In practice, an energy consumer often consists of a set of residential or commercial buildings, with individual units that are expected to cooperate to achieve overall optimization under modern electricity operations, such as time-of-use price. Global utility is decomposed to the payoff of each player, and each game is played over a prediction horizon through the design of a series of sliding window games by treating each building as a player. During the games, a distributed learning algorithm based on game theory is proposed such that each building learns to play a part of the global optimum through state transition. The proposed scheme is applied to a case study of three buildings to demonstrate its effectiveness.

关键词： game theory demand response HVAC control multi-building system

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多智能体分布式智能控制在VAV空调系统中的应用

张宏伟,吴爱国,盛涛

《中国工程科学》 2006年第8卷第7期页码 58-62

摘要：

针对变风量（VAV）空调系统的特性，将VAV系统分解为多个智能体，提出了基于多智能体技术的分布式智能控制方法，有效地解决了变风量空调系统回路间的解耦和协调问题。建立了VAV系统的动态仿真程序，仿真结果表明该控制方法是有效的。

关键词：变风量智能体多智能体系统分布式智能控制

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

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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基于分布式事件触发策略的异构非线性多智能体系统包含控制 Research Articles

孙雅妮,邹文成,郭健,向峥嵘

《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.2000034

摘要：研究分布式事件触发策略下高阶异构非线性多智能体系统包含控制问题。为实现包含控制目标并减少智能体间的通讯损耗，采用反推控制法、李雅普诺夫函数分析法和神经网络，提出一种分布式事件触发控制策略。为避免对状态误差的连续监测，将事件触发情形的结论推广到自触发控制情形。所提控制协议和触发规则确保每个智能体的输出能在一定误差范围内收敛到有多个领导者信号组成的凸包中。此外，所有智能体都不会发生Zeno现象。最后，通过两个数值仿真案例证明所得结论的正确性。

关键词：多智能体系统；分布式事件触发控制；包含控制；异构非线性系统；Zeno现象

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基于Web服务的分布式仿真系统的双重访问控制

陈学勤,吴慧中,朱耀琴

《中国工程科学》 2009年第11卷第8期页码 72-78

摘要：

随着分布式仿真系统与Web服务技术的结合日益紧密，以及功能与资源分离的愈加明显，导致大量仿真资源暴露于网络中，传统、单一的访问控制模型已无法应对。为此提出了一种基于属性的针对功能和资源的双重访问控制模型，采用证书代理机制实现功能端单点登录，采用XACML实现资源端多属性的访问控制。详细描述了该模型的访问控制流程，目前已应用到虚拟采办系统中。通过对性能的分析和测试，证明了该双重访问控制模型的可用性和有效性。

关键词： Web服务安全双重访问控制分布式仿真系统

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CAN总线时间触发机制的实现

吕伟杰,,刘鲁源,王毅新

《中国工程科学》 2005年第7卷第9期页码 40-43

摘要：

分析了CAN总线的时间触发机制，基于8052单片机和CAN控制器SJA1000设计了时间触发机制的实现方案，给出了网络中基本周期中可传输的最大消息数目及可调度分析方法。以汽车引擎控制系统为例进行的实验结果表明，利用CAN总线时间触发机制不仅可以有效地管理消息的传输，而且提高了总线带宽利用率。

关键词：时间触发时间同步 CAN总线分布式控制系统

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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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基于配电网限制条件与市场控制的协调电动汽车充电方案研究 Artical

Geert Deconinck,Klaas De Craemer,Bert Claessens

《工程（英文）》 2015年第1卷第4期页码 453-465 doi: 10.15302/J-ENG-2015095

摘要：

电动汽车 (EV) 充电会对配电网产生影响，其充电成本取决于充电时的电价。为了最大程度地降低成本，一个负责大EV集群的集中器可采用基于市场的控制算法来协调车辆充电。在这一优化中，不考虑连接EV的配电网的运行参数。这可能会导致不符合电网技术限制条件的情况出现 ( 如电压偏低、相位不平衡) ；例如，当电价较低时大量汽车开始同时充电。同时考虑经济方面和技术方面的多目标优化是比较复杂的，因为该优化必须将市场层面的时间驱动型控制与运行层面的事件驱动型控制结合起来。不同的案例研究调查了在何种情况下协调EV充电的基于市场的控制会与配电网的运行限制条件发生冲突。尤其是在弱电网中，相位的不平衡和电压问题会随着EV的高份额而出现。如果局部电压较低，在EV 的充电位置可以采用低水平电压下垂控制器，通过降低充电功率来满足电网的运行限制条件。虽然这一操作意味着会偏离成本最优运行点，但结果表明该方法对集中器工作状况的影响是非常有限的，即使是在承载大量EV的弱配电网中，也能够满足配电网技术的限制条件。

关键词：电动汽车充电配电网技术目标与经济目标的结合分散控制

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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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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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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

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An application of game theory in distributed collaborative decision making

Angran XIAO

《机械工程前沿（英文）》 2019年第14卷第1期页码 85-101 doi: 10.1007/s11465-019-0523-4

摘要： In a distributed product realization environment, new paradigms and accompanying software systems are necessary to support the collaborative work of geographically dispersed engineering teams from different disciplines who have different knowledge, experience, tools and resources. To verify the concept of collaboration by separation, we propose a generic information communication medium to enable knowledge representation and exchange between engineering teams, a digital interface. Across digital interfaces, each engineering team maintains its own perspective towards the product realization problem, and each controls a subset of design variables and seeks to maximize its own payoff function subject to individual constraints. Hence, we postulate the use of principles from game theory to model the relationships between engineering teams and facilitate collaborative decision making without causing unnecessary information exchange or iteration across digital interfaces. A product design and manufacturing scenario is introduced to demonstrate the efficacy of using game theory to maintain a clean interface between design and manufacturing teams.

关键词： collaboration distributed product realization game theory digital interface