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基于优化RBPF的同时定位与地图构建 被引量:21
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作者 罗元 苏琴 +1 位作者 张毅 郑潇峰 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2016年第5期30-34,共5页
以优化的Rao-Blackwellized粒子滤波器(RBPF)为基础,实现了室内移动机器人同时定位与地图构建(SLAM).结合移动机器人的运动模型和观测模型,设计一种基于退火参数优化混合提议分布的RBPF算法,以退火参数调控两者在混合提议分布中的比例,... 以优化的Rao-Blackwellized粒子滤波器(RBPF)为基础,实现了室内移动机器人同时定位与地图构建(SLAM).结合移动机器人的运动模型和观测模型,设计一种基于退火参数优化混合提议分布的RBPF算法,以退火参数调控两者在混合提议分布中的比例,使改进的提议分布更加接近真实状态;针对重采样后粒子退化效应,提出一种基于等级的自适应局部重采样(APRR)算法.在机器人操作系统(ROS)平台上,使用配有URG激光器的Pioneer3-DX机器人对改进算法进行实验验证,结果表明:改进算法能减少所需粒子数,保持粒子多样性,降低计算复杂度,在不同环境下在线创建高精度的2-D栅格地图. 展开更多
关键词 同时定位与地图构建 混合提议分布 重采样 机器人操作系统 先锋3机器人
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混合渠道的易逝品分销系统的库存竞争 被引量:18
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作者 侯琳琳 邱菀华 《系统工程理论与实践》 EI CSCD 北大核心 2009年第2期44-52,共9页
讨论随机需求下的混合渠道分销系统,针对同一产品在不同渠道间的替代性,研究了传统渠道和直销渠道间的库存竞争问题.证明了渠道库存竞争存在唯一的纯策略纳什均衡,分析了批发价格和渠道替代率的变化对竞争结果的影响,同时证明了存在使... 讨论随机需求下的混合渠道分销系统,针对同一产品在不同渠道间的替代性,研究了传统渠道和直销渠道间的库存竞争问题.证明了渠道库存竞争存在唯一的纯策略纳什均衡,分析了批发价格和渠道替代率的变化对竞争结果的影响,同时证明了存在使系统收益最大化的最佳渠道库存,并与竞争结果进行了比较,揭示了系统的失调性.最后,通过一个数值算例考察了相关因素对各方收益的影响,并对相关结论进行了验证. 展开更多
关键词 供应链 混合渠道分销系统 渠道竞争 博弈分析
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Optimal Planning of AC-DC Hybrid Transmission and Distributed Energy Resource System: Review and Prospects 被引量:18
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作者 Xianglong Liu Youbo Liu +2 位作者 Junyong Liu Yue Xiang Xiaodong Yuan 《CSEE Journal of Power and Energy Systems》 SCIE CSCD 2019年第3期409-422,共14页
With the highly-extensive integration of distributed renewable energy resources(DER)into the grid,the power distribution system has changed greatly in the structure,function and operating characteristics.On this groun... With the highly-extensive integration of distributed renewable energy resources(DER)into the grid,the power distribution system has changed greatly in the structure,function and operating characteristics.On this ground,An AC-DC hybrid DER system becomes necessary for effective management and control over DER.This paper first summarizes the physical characteristics and morphological evolution of AC-DC hybrid DER system.The impact of these new features on system configuration planning is analyzed with respect to its flexible networking,rich operation control modes,and tight sourcenetwork-load-storage coupling.Then,based on a review of the existing research,problems and technical difficulties are figured out in terms of converter modeling,steady-state analysis,power flow calculation,operating scenarios management,and optimization model solution.In light of the problems and difficulties,a framework for the configuration optimization of AC-DC hybrid DER systems is proposed.At last,the paper provides a prospect of key technologies from six aspects including morphology forecasting,coupling interaction analysis,uncertainty modeling,operation simulation,optimization model solving algorithm and comprehensive scheme evaluation. 展开更多
关键词 AC-DC hybrid configuration optimization collaborative planning distribution system distributed energy resource system MICROGRID
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基于混合编码方式的配电网故障恢复算法研究 被引量:17
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作者 巩伟峥 房鑫炎 《电力系统保护与控制》 EI CSCD 北大核心 2012年第6期104-108,共5页
为提高遗传算法求解配电网故障恢复问题的效率,提出了一种染色体混合编码模型。对配电网的网络拓扑进行节点深度法编码,通过相应的交叉变异操作,产生可行的配电网生成树。非故障失电区的可中断负荷采用0-1编码,实现切负荷控制,增加故障... 为提高遗传算法求解配电网故障恢复问题的效率,提出了一种染色体混合编码模型。对配电网的网络拓扑进行节点深度法编码,通过相应的交叉变异操作,产生可行的配电网生成树。非故障失电区的可中断负荷采用0-1编码,实现切负荷控制,增加故障恢复的灵活性。这种混合编码方式可以大大降低不可行解的数量,加快算法收敛速度。采用多目标优化算法NSGA-Ⅱ,减少权重系数主观性对最优解的影响,实现各个优化目标的协同进化,可以为调度人员提供多个最优恢复方案。算例计算结果验证了所提出的模型和算法的正确性和有效性。 展开更多
关键词 故障恢复 节点深度编码 混合编码 多目标优化 切负荷控制 配电网
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Two-stage Optimal Dispatching of AC/DC Hybrid Active Distribution Systems Considering Network Flexibility 被引量:6
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作者 Yi Su Jiashen Teh 《Journal of Modern Power Systems and Clean Energy》 SCIE EI CSCD 2023年第1期52-65,共14页
The increasing flexibility of active distribution systems(ADSs)coupled with the high penetration of renewable distributed generators(RDGs)leads to the increase of the complexity.It is of practical significance to achi... The increasing flexibility of active distribution systems(ADSs)coupled with the high penetration of renewable distributed generators(RDGs)leads to the increase of the complexity.It is of practical significance to achieve the largest amount of RDG penetration in ADSs and maintain the optimal operation.This study establishes an alternating current(AC)/direct current(DC)hybrid ADS model that considers the dynamic thermal rating,soft open point,and distribution network reconfiguration(DNR).Moreover,it transforms the optimal dispatching into a second-order cone programming problem.Considering the different control time scales of dispatchable resources,the following two-stage dispatching framework is proposed.d dispatch uses hourly input data with the goal(1)The day-ahea of minimizing the grid loss and RDG dropout.It obtains the optimal 24-hour schedule to determine the dispatching plans for DNR and the energy storage system.(2)The intraday dispatch uses 15-min input data for 1-hour rolling-plan dispatch but only executes the first 15 min of dispatching.To eliminate error between the actual operation and dispatching plan,the first 15 min is divided into three 5-min step-by-step executions.The goal of each step is to trace the tie-line power of the intraday rolling-plan dispatch to the greatest extent at the minimum cost.The measured data are used as feedback input for the rolling-plan dispatch after each step is executed.A case study shows that the comprehensive cooperative ADS model can release the line capacity,reduce losses,and improve the penetration rate of RDGs.Further,the two-stage dispatching framework can handle source-load fluctuations and enhance system stability. 展开更多
关键词 Two-stage dispatching network flexibility renewable distributed generator second-order cone programming(SOCP) alternating current(AC)/direct current(DC)hybrid active distribution system
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基于深度神经网络伪量测建模的交直流混合配电网交替迭代法状态估计 被引量:9
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作者 龚逊东 费有蝶 +4 位作者 凌佳凯 胡金峰 秦军 卫志农 臧海祥 《电力建设》 CSCD 北大核心 2022年第10期111-120,共10页
当前配电网状态估计面临的一个突出问题是实时量测数量不足,难以实现全网可观性。为了给配电管理系统提供准确的基础数据,提出一种基于深度神经网络伪量测建模的交直流混合配电网交替迭代状态估计方法。首先,建立电压源换流器的稳态模... 当前配电网状态估计面临的一个突出问题是实时量测数量不足,难以实现全网可观性。为了给配电管理系统提供准确的基础数据,提出一种基于深度神经网络伪量测建模的交直流混合配电网交替迭代状态估计方法。首先,建立电压源换流器的稳态模型和混合配电网的实时量测模型;然后,利用历史量测数据对深度神经网络进行离线训练,建立负荷节点注入功率的伪量测模型;最后,对交流区域和直流区域进行交替迭代状态估计,在交替过程中区域间交换VSC支路状态量的估计值,保证了边界状态量的一致性。算例测试结果表明,所提方法能在实时量测覆盖率低的情况下,准确估计混合配电网的状态值。 展开更多
关键词 混合配电网 交替迭代状态估计 深度神经网络 伪量测
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基于混合智能算法的配电网络重构 被引量:9
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作者 于永哲 黄家栋 《南方电网技术》 2010年第1期76-79,共4页
提出了一种基于最优流和模拟植物生长法的配电网络重构混合算法。该算法模拟植物生长算法,帮助最优流算法避开局部最优,减少搜索次数和开关变换次数,从根本上提高计算速度。算法将目标函数与约束条件分开处理,采用方向性的搜索机制,避... 提出了一种基于最优流和模拟植物生长法的配电网络重构混合算法。该算法模拟植物生长算法,帮助最优流算法避开局部最优,减少搜索次数和开关变换次数,从根本上提高计算速度。算法将目标函数与约束条件分开处理,采用方向性的搜索机制,避免了一些参数难以确定或搜索方向无引导性而陷入局部最优的问题。根据配电网的特点,改进了以开关作为控制变量的表达方式,降低了变量维数,提高了计算效率。采用四种状态描述开关的运行方式,有效减小了寻优过程中的搜索范围。对IEEE69节点系统进行分析计算,并对比相关文献结果,所提方法具有快速的全局寻优能力。 展开更多
关键词 网络重构 混合算法 配电网 电力系统
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Multi-Period Resilient Model for VSC-Based AC-DC HDS Considering Public-Safety Power Shutoff to Mitigate Wildfires
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作者 Zekai Wang Tao Ding +3 位作者 Xiaosheng Zhang Chenggang Mu Pengwei Du Fangxing Li 《CSEE Journal of Power and Energy Systems》 SCIE EI CSCD 2024年第2期821-833,共13页
This paper proposes a voltage source converter (VSC) -based AC-DC hybrid distribution system (HDS) resilient model to mitigate power outages caused by wildfires. Before a wildfire happens, the public-safety power shut... This paper proposes a voltage source converter (VSC) -based AC-DC hybrid distribution system (HDS) resilient model to mitigate power outages caused by wildfires. Before a wildfire happens, the public-safety power shutoff (PSPS) strategy is applied to actively cut some vulnerable lines which may easily cause wildfires, and reinforce some lines that are connected to critical loads. To mitigate load shedding caused by active line disconnection in the PSPS strategy, network reconfiguration is applied before the wildfire occurrence. During the restoration period, repair crews (RCs) repair faulted lines, and network reconfiguration is also taken into consideration in the recovery strategy to pick up critical loads. Since there exists possible errors in the wildfire prediction, several different scenarios of wildfire occurrence have been taken into consideration, leading to the proposition of a stochastic multi-period resilient model for the VSC-based AC-DC HDS. To accelerate the computational performance, a progressive hedging algorithm has been applied to solve the stochastic model which can be written as a mixed-integer linear program. The proposed model is verified on a 106-bus AC-DC HDS under wildfire conditions, and the result shows the proposed model not only can improve the system resilience but also accelerate computational speed. 展开更多
关键词 AC-DC hybrid distribution system restoration network reconfiguration progressive hedging public safety power shutoffs strategy resilience
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Coordinated voltage regulation of hybrid AC/DC medium voltage distribution networks 被引量:4
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作者 Lu ZHANG Ying CHEN +2 位作者 Chen SHEN Wei TANG Jun LIANG 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2018年第3期463-472,共10页
In a hybrid AC/DC medium voltage distribution network, distributed generations(DGs), energy storage systems(ESSs), and the voltage source converters(VSCs)between AC and DC lines, have the ability to regulate node volt... In a hybrid AC/DC medium voltage distribution network, distributed generations(DGs), energy storage systems(ESSs), and the voltage source converters(VSCs)between AC and DC lines, have the ability to regulate node voltages in real-time. However, the voltage regulation abilities of above devices are limited by their ratings. And the voltage regulation efficiencies of these devices are also different. Besides, due to high r/x ratio, node voltages are influenced by both real and reactive power. In order to achieve the coordinated voltage regulation in a hybrid AC/DC distribution network, a priority-based real-time control strategy is proposed based on the voltage control effect of real and reactive power adjustment. The equivalence of real and reactive power adjustment on voltage control is considered in control area partition optimization, in which regulation efficiency and capability are taken as objectives.In order to accommodate more DGs, the coordination of controllable devices is achieved according to voltage sensitivities. Simulations studies are performed to verify the proposed method. 展开更多
关键词 hybrid AC/DC distribution network VOLTAGE control PARTITION Power system
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Battery Storage Configuration of AC/DC Hybrid Distribution Networks 被引量:1
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作者 He Meng Hongjie Jia +2 位作者 Tao Xu Wei Wei Xiaoyu Wang 《CSEE Journal of Power and Energy Systems》 SCIE EI CSCD 2023年第3期859-872,共14页
The upscaling requirements of energy transition highlight the urgent need for ramping up renewables and boosting system efficiencies.However,the stochastic nature of excessive renewable energy resources has challenged... The upscaling requirements of energy transition highlight the urgent need for ramping up renewables and boosting system efficiencies.However,the stochastic nature of excessive renewable energy resources has challenged stable and efficient operation of the power system.Battery energy storage systems(BESSs)have been identified as critical to mitigate random fluctuations,unnecessary green energy curtailment and load shedding with rapid response and flexible connection.On the other hand,an AC/DC hybrid distribution system can offer merged benefits in both AC and DC subsystems without additional losses during AC/DC power conversion.Therefore,configuring BESSs on an AC/DC distribution system is wellpositioned to meet challenges brought by carbon reductions in an efficient way.A bi-level optimization model of BESS capacity allocation for AC/DC hybrid distribution systems,considering the flexibility of voltage source converters(VSCs)and power conversion systems(PCSs),has been established in this paper to address the techno-economic issues that hindered wide implementation.The large-scale nonlinear programming problem has been solved utilizing a genetic algorithm combined with second-order cone programming.Rationality and effectiveness of the model have been verified by setting different scenarios through case studies.Simulation results have demonstrated the coordinated operation of BESS and AC/DC hybrid systems can effectively suppress voltage fluctuations and improve the cost-benefit of BESSs from a life cycle angle. 展开更多
关键词 AC/DC hybrid distribution network arbitrage revenue battery energy storage system life cycle cost voltage source converter
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Power Quality Improvement Using ANN Controller For Hybrid Power Distribution Systems
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作者 Abdul Quawi Y.Mohamed Shuaib M.Manikandan 《Intelligent Automation & Soft Computing》 SCIE 2023年第6期3469-3486,共18页
In this work,an Artificial Neural Network(ANN)based technique is suggested for classifying the faults which occur in hybrid power distribution systems.Power,which is generated by the solar and wind energy-based hybrid... In this work,an Artificial Neural Network(ANN)based technique is suggested for classifying the faults which occur in hybrid power distribution systems.Power,which is generated by the solar and wind energy-based hybrid system,is given to the grid at the Point of Common Coupling(PCC).A boost converter along with perturb and observe(P&O)algorithm is utilized in this system to obtain a constant link voltage.In contrast,the link voltage of the wind energy conversion system(WECS)is retained with the assistance of a Proportional Integral(PI)controller.The grid synchronization is tainted with the assis-tance of the d-q theory.For the analysis of faults like islanding,line-ground,and line-line fault,the ANN is utilized.The voltage signal is observed at the PCC,and the Discrete Wavelet Transform(DWT)is employed to obtain different features.Based on the collected features,the ANN classifies the faults in an effi-cient manner.The simulation is done in MATLAB and the results are also validated through the hardware implementation.Detailed fault analysis is carried out and the results are compared with the existing techniques.Finally,the Total harmonic distortion(THD)is lessened by 4.3%by using the proposed methodology. 展开更多
关键词 Artificial neural network discrete wavelet transform hybrid power distribution system power quality power quality disturbances
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MRI+CT复合手术室设计实践——以北方某医院为例
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作者 潘国忠 张卓辉 《中国医院建筑与装备》 2023年第12期61-64,共4页
结合北方某医院建设项目,从建筑设计角度,就平面布局及选址、净化空调系统、电磁屏蔽与射线防护、装饰的实用性、配电系统设计、数字化整合技术等方面系统地介绍了MRI+CT复合手术室的设计经验。
关键词 复合手术室 MRI CT 净化空调 配电系统
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游艇混合动力系统保护设计与分析
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作者 白艳祥 丁俊 +1 位作者 张益 张合 《船舶设计通讯》 2023年第2期77-82,共6页
为保证中型智能游艇工程示范船混合动力系统安全可靠运行,分析推进系统及交直流电力系统保护功能,形成游艇混合动力系统保护设计方案,通过实艇试验,验证保护系统设计的正确性,为类似中小型游艇混合动力系统的设计提供思路。
关键词 游艇 混合动力 直流配电 系统保护
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低压交直流混合配电系统线性化建模方法 被引量:2
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作者 成龙 訾士才 +2 位作者 唐凯 王振浩 李国庆 《电力系统保护与控制》 EI CSCD 北大核心 2018年第24期16-24,共9页
线性化模型是直流系统稳定性分析、接口耦合机理研究及控制器设计的基础。将含多直流微网的辐射状交直流混合配电系统分为整流接口及所连交流主网、逆变接口及所连无源交流系统、并网接口及所连直流微网以及直流网络4个部分,建立灵活的... 线性化模型是直流系统稳定性分析、接口耦合机理研究及控制器设计的基础。将含多直流微网的辐射状交直流混合配电系统分为整流接口及所连交流主网、逆变接口及所连无源交流系统、并网接口及所连直流微网以及直流网络4个部分,建立灵活的同步旋转坐标系。分别推导系统各部分在发生小扰动下的暂态数学模型。采用一种含控制标识位的接口控制器线性化建模方法,并引入锁相环控制,建立系统的全局线性化模型,提高了模型在不同应用场景下的普适性。通过与电磁暂态模型进行对比分析,验证了所建立的交直流混合配电系统全局线性化模型的正确性和有效性。 展开更多
关键词 交直流混合 配电系统 接口控制 线性化建模
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Parameter Estimation Based on Censored Data under Partially Accelerated Life Testing for Hybrid Systems due to Unknown Failure Causes
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作者 Mustafa Kamal 《Computer Modeling in Engineering & Sciences》 SCIE EI 2022年第3期1239-1269,共31页
In general,simple subsystems like series or parallel are integrated to produce a complex hybrid system.The reliability of a system is determined by the reliability of its constituent components.It is often extremely d... In general,simple subsystems like series or parallel are integrated to produce a complex hybrid system.The reliability of a system is determined by the reliability of its constituent components.It is often extremely difficult or impossible to get specific information about the component that caused the system to fail.Unknown failure causes are instances in which the actual cause of systemfailure is unknown.On the other side,thanks to current advanced technology based on computers,automation,and simulation,products have become incredibly dependable and trustworthy,and as a result,obtaining failure data for testing such exceptionally reliable items have become a very costly and time-consuming procedure.Therefore,because of its capacity to produce rapid and adequate failure data in a short period of time,accelerated life testing(ALT)is the most utilized approach in the field of product reliability and life testing.Based on progressively hybrid censored(PrHC)data froma three-component parallel series hybrid system that failed to owe to unknown causes,this paper investigates a challenging problem of parameter estimation and reliability assessment under a step stress partially accelerated life-test(SSPALT).Failures of components are considered to follow a power linear hazard rate(PLHR),which can be used when the failure rate displays linear,decreasing,increasing or bathtub failure patterns.The Tempered random variable(TRV)model is considered to reflect the effect of the high stress level used to induce early failure data.The maximum likelihood estimation(MLE)approach is used to estimate the parameters of the PLHR distribution and the acceleration factor.A variance covariance matrix(VCM)is then obtained to construct the approximate confidence intervals(ACIs).In addition,studentized bootstrap confidence intervals(ST-B CIs)are also constructed and compared with ACIs in terms of their respective interval lengths(ILs).Moreover,a simulation study is conducted to demonstrate the performance of the estimation procedures and th 展开更多
关键词 Step stress partially accelerated life test progressive hybrid censoring data masking power linear hazard rate distribution hybrid system
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混联式混合电动车辆最佳动力配置策略
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作者 J-Y Park Y-K Park J-H Park 《传动技术》 2012年第1期24-33,共10页
采用一台内燃机和两台电动机组合的混联式混合电动车辆(HEV),具有可控制两混联混合系统功率流的优势。在该系统中,功率流的控制,不仅可调整机械能和电能的大小和方向,同时还可调整发动机的工作点。本研究引用一功率配置策略实现最小的... 采用一台内燃机和两台电动机组合的混联式混合电动车辆(HEV),具有可控制两混联混合系统功率流的优势。在该系统中,功率流的控制,不仅可调整机械能和电能的大小和方向,同时还可调整发动机的工作点。本研究引用一功率配置策略实现最小的功率流损耗和一个高效的发动机工作点。该策略采用控制图求出最有效的工作点降低计算载荷。此外,一种能量策略,采用建立功率配置的结果,决定蓄电池最佳充/放电功率。这种控制结构组合了功率配置策略和能量策略,确保HEV的有效驱动。进行了一系列的仿真和车辆试验,验证了策略的有效性,结果表明对燃油经济性改进的差异。 展开更多
关键词 混合电动车辆 功率配置 系统效率 控制策略
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考虑安全约束的交直流配电网储能与换流站协调经济调度 被引量:61
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作者 王守相 陈思佳 谢颂果 《电力系统自动化》 EI CSCD 北大核心 2017年第11期85-91,共7页
直流配电网技术的发展,为分布式电源、储能的接入提供了更高效的方式,同时也使配电网呈现出交直流混合的拓扑形态。提出了基于安全约束的交直流混合配电网储能与换流站协调经济调度方法,通过优化换流站的无功调节与储能的充放电,一方面... 直流配电网技术的发展,为分布式电源、储能的接入提供了更高效的方式,同时也使配电网呈现出交直流混合的拓扑形态。提出了基于安全约束的交直流混合配电网储能与换流站协调经济调度方法,通过优化换流站的无功调节与储能的充放电,一方面能确保配电系统安全运行,另一方面在输配分离的电力市场环境下可最小化供电公司从上级电网购电的成本。另外,交直流混合配电网经济调度模型属于混合整数非线性规划,缺乏快速有效的求解方法,通过线性化技术将原模型转化为能有效求解的混合整数线性规划问题。最后,通过算例测试验证了所提方法的效果及求解的快速性。 展开更多
关键词 交直流混合配电网 分布式电源 储能系统 经济调度 安全约束 电力市场 混合整数线性规划
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面向交直流混合配电系统的多端口电力电子变压器研究综述 被引量:60
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作者 李凯 赵争鸣 +3 位作者 袁立强 高畅毓 文武松 游小杰 《高电压技术》 EI CAS CSCD 北大核心 2021年第4期1233-1250,共18页
多端口电力电子变压器作为交直流混合配电系统的一种关键枢纽设备,具备能量流动双向、潮流灵活调节、谐波无功可控和端口故障隔离等功能,近年来得到越来越多的关注。针对面向交直流混合配电系统的多端口电力电子变压器,层层深入推演了... 多端口电力电子变压器作为交直流混合配电系统的一种关键枢纽设备,具备能量流动双向、潮流灵活调节、谐波无功可控和端口故障隔离等功能,近年来得到越来越多的关注。针对面向交直流混合配电系统的多端口电力电子变压器,层层深入推演了其拓扑结构的发展历程,从图论的角度归纳出星型和串型结构,从公共能量汇集环节形式的角度归纳出共直流母线结构和高频耦合的结构。然后,对比分析了不同拓扑结构的优劣势,并给出实际交直流混合配电系统不同需求下的拓扑结构选取原则。进一步地,总结了多端口电力电子变压器在仿真、设计、控制与保护方面的应用挑战,进而展望了未来的技术发展方向。 展开更多
关键词 电力电子变压器 多端口 共直流母线 高频链 交直流混合配电系统
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含恒功率负载的交直流混联配电系统稳定性分析 被引量:49
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作者 张学 裴玮 +3 位作者 邓卫 于汀 范士雄 黄仁乐 《中国电机工程学报》 EI CSCD 北大核心 2017年第19期5572-5582,共11页
交直流混联配电系统的稳定性分析方法是评价系统能否安全稳定运行的关键技术。传统稳定性分析方法通常以直流级联系统和直流微电网作为研究对象,而对于含恒功率负载的交直流混联配电系统稳定性分析和评价较少涉及。基于这一问题,提出了... 交直流混联配电系统的稳定性分析方法是评价系统能否安全稳定运行的关键技术。传统稳定性分析方法通常以直流级联系统和直流微电网作为研究对象,而对于含恒功率负载的交直流混联配电系统稳定性分析和评价较少涉及。基于这一问题,提出了适用于交直流混联配电系统的阻抗匹配稳定性分析方法,建立了柔性互联装置、光伏发电单元、恒功率负载以及?型线路的状态空间小信号模型。在多端柔性互联装置采用主从和下垂控制情况下构建了交直流混联配电系统的戴维南等效电路,利用奈奎斯特稳定判据确定了负阻抗稳定边界,并且采用Simulink仿真工具搭建了详细物理模型,通过仿真结果和奈奎斯特曲线对比分析验证了所提稳定性分析方法的可行性。 展开更多
关键词 交直流混联配电系统 恒功率负载 小信号模型 稳定性分析 柔性互联装置
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电力电子化进程下的交直流无缝混合灵活配电系统研究 被引量:34
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作者 盛万兴 段青 +2 位作者 孟晓丽 刘海涛 史常凯 《中国电机工程学报》 EI CSCD 北大核心 2017年第7期1877-1888,共12页
该文从当前配电网所面临的众多挑战出发,结合当前与未来配电系统中电力电子化进程的发展现状和趋势,提出了以新型全可控柔性化配电装备为核心的网格状层次化架构的交直流无缝混合灵活配电系统及其组网模型,并在原有研究基础上详细设计... 该文从当前配电网所面临的众多挑战出发,结合当前与未来配电系统中电力电子化进程的发展现状和趋势,提出了以新型全可控柔性化配电装备为核心的网格状层次化架构的交直流无缝混合灵活配电系统及其组网模型,并在原有研究基础上详细设计了新型配电装备的系统结构,并对其核心模块多种主电路拓扑和控制策略进行了研究。最后搭建了多机级联运行的交直流无缝混合灵活配电系统计算机仿真模型,经对各种暂、稳状态的仿真分析,论证其可行性、有效性和优越性。 展开更多
关键词 配电网 交直流无缝混合 灵活配电系统 电能交换器 电力集能器
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