检索结果-内蒙古大学图书馆

Coordination control of power Flow controller and Hybrid DC Circuit Breaker in MVDC Distribution Networks

Journal of Modern power systems and Clean Energy 2021年第6期9卷 1257-1268页

作者： Jianquan Liao Niancheng Zhou Zian Qin Pavel Purgat Qianggang Wang Pavol Bauer IEEE School of Electrical Engineering Sichuan University State Key Laboratory of Power Transmis-sion Equipment and System Security and New Technology Chongqing University Department of Electrical Sustainable Energy DC SystemsEnergy Conversion andStorage Group

The two main challenges of medium voltage direct current(MVDC)distribution network are the flexible control of power flow(PF)and fault *** this paper,the power flow controller(PFC)is introduced to regulate the PF and inhibit the fault current during the DC *** coordination strategy of series-parallel PFC(SP-PFC)and hybrid DC circuit breaker(DCCB)is *** regulating the polarity and magnitude of SP-PFC output voltage during the fault,the rising speed of fault current can be suppressed so as to reduce the breaking current of hybrid *** access mode of SP-PFC to the MVDC distribution network and its topology are analyzed,and the coordination strategy between SP-PFC and hybrid DCCB is ***,the emergency control and bypass control strategies of SP-PFC are *** this basis,the mathematical model of SP-PFC in different fault stages is *** the equivalent model of SP-PFC,the fault current of the MVDC distribution network can be calculated accurately.A simulation model of the MVDC distribution network containing SP-PFC is established in MATLAB/*** fault current calculation result is compared with the simulation result,and the effectiveness of the proposed coordination strategy is verified.

关键词： Medium voltage direct current(MVDC)distribution network fault current power flow controller(PFC) DC circuit breaker(DCCB)

来源：评论

学校读者我要写书评

暂无评论

A Protection Method for Inverter-based Microgrid Using Current-only Polarity Comparison

引用

Journal of Modern power systems and Clean Energy 2020年第3期8卷 446-453页

作者： Bin Wang Liuming Jing State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084China

The design of an effective protection system for inverter-based microgrids is a complicated engineering *** is due to the fact that inverters have limited fault current capabilities, and that the conventional overcurrent protection is not suitable for inverter-based microgrids. This paper introduces a novel protection method for inverter-based microgrid using a current-only polarity comparison. The proposed method is based on the phase difference between the pre-fault and fault current components. The method responds to faults in both grid-connected and autonomous operation modes and provides a new way to identify faulted sections. Simulations of an inverter-based microgrid with a relay model are conducted using PSCAD/EMTDC software. The results show that the proposed method can detect faults in inverter-based microgrids.

关键词： Distributed energy resources inverter microgrid protection fault current

来源：评论

学校读者我要写书评

暂无评论

Risk Assessment with Generic Energy Storage under Exogenous and Endogenous Uncertainty

Risk Assessment with Generic Energy Storage under Exogenous ...

引用

2022 IEEE power and Energy Society General Meeting, PESGM 2022

作者： Qi, Ning Cheng, Lin Wan, Yuxiang Zhuang, Yingrui Liu, Zeyu State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Department of Electrical Engineering Tsinghua University Beijing100084 China Tianjin University China

ISBN: (数字)9781665408233

ISBN: (纸本)9781665408233

Current risk assessment ignores the stochastic nature of energy storage availability itself and thus lead to potential risk during operation. This paper proposes the redefinition of generic energy storage (GES) that is allowed to offer probabilistic reserve. A data-driven unified model with exogenous and endogenous uncertainty (EXU & EDU) description is presented for four typical types of GES. Moreover, risk indices are proposed to assess the impact of overlooking (EXU & EDU) of GES. Comparative results between EXU & EDU are illustrated in distribution system with day-ahead chance-constrained optimization (CCO) and more severe risks are observed for the latter, which indicate that system operator (SO) should adopt novel strategies for EDU uncertainty. © 2022 IEEE.

关键词： Risk assessment

来源：评论

学校读者我要写书评

暂无评论

Impedance Modeling and Characteristics Analysis of Grid-Forming Converter

Impedance Modeling and Characteristics Analysis of Grid-Form...

引用

IEEE Conference on Energy Internet and Energy system Integration (EI2)

作者： Huifang Liu Yu Lei Guoqing He Keke Liu Liping Gao Junhua Ma State Key Laboratory of Operation and Control of Renewable Energy &Storage Systems China Electrical Power Research Institude School of Information Engineering China University of Geosciences Beijing China State Key Laboratory of Operation and Control of Renewable Energy &Storage Systems China Electrical Power Research Institute Beijing China

Grid-forming control (GFM) has been widely applied in academia and industry for its contribution to the stability in weak grid. As GFM has multiple control loops that interact with each other, the dominant factor of impedance characteristics in different frequency bands is still unknown. At the same time, the impact of dynamic response requirements such as bandwidth and phase margin (PM) of each control loop on GFM impedance characteristics in different frequency bands is still unclear. This article first establishes an impedance model of GFM and analyzes the transmission path of small signals in GFM. Then, based on the small signal transmission relationship, the GFM impedance is divided into two parts. One part is dominated by the synchronization loop, and the other part is dominated by the voltage and current loops. Based on this, the influence of each control loop on GFM impedance characteristics is analyzed. Finally, based on the control hardware in the loop simulation platform, experiments were conducted, verifying the correctness of the analysis in this paper.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Study on partial discharge of transformer based on wide frequency equivalent circuit

Study on partial discharge of transformer based on wide freq...

引用

IEEE International Conference on Energy Internet (ICEI)

作者： Changming Jiang Yuanxiang Zhou Ping Li Yunpeng Tang Zhiyang He Huan Li Jianning Chen Ka Mu North China Branch State Grid Corporation of China Bejing China Department of Electrical Engineering State Key Laboratory of Power System Operation and Control Tsinghua University Bejing China State Grid Corporation of China Bejing China Electric Power Research Institute of State Grid Jibei Electric Power Company Limited Bejing China

ISBN: (数字)9798331523558

ISBN: (纸本)9798331523565

When partial discharge occurs in the transformer, it will produce higher frequency pulse current, high frequency phenomenon will enhance the circuit capacitance effect, making the circuit bandwidth, in order to detect the local discharge signal so as to realize the transformer for equipment monitoring, the establishment of the transformer broadband equivalent circuit model, the propagation law of partial discharge pulse current signal in the transformer is investigated, and the effects of four denoising methods are compared under different evaluation indexes; finally, a typical transformer partial discharge condition is studied, and the validity of the transformer partial discharge research based on the wide-band equivalent circuit is verified.

关键词： Partial discharges Grounding Windings Noise reduction Wavelet packets Frequency measurement Finite element analysis power transformers Integrated circuit modeling Equivalent circuits

来源：评论

学校读者我要写书评

暂无评论

Cooperative Prediction Approach for the Small-Signal Stability Margin of Renewable power system Based on Vertical Federated Learning

Cooperative Prediction Approach for the Small-Signal Stabili...

引用

power systems and electrical Technology (PSET), IEEE International Conference on

作者： Xiang Lai Zhihao Chen Yun Liu Tianchen Dai Haiqing Cai Haohan Gu Wei Chen School of Electric Power Engineering South China University of Technology Guangzhou China State Key Laboratory of HVDC CSG Electric Power Research Institute Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China

ISBN: (数字)9798350353204

ISBN: (纸本)9798350353211

Since sub-synchronous oscillations have been frequently witnessed in large-scale wind farms under weak grid conditions, it is significant to predict the critical stability situations in short term so that timely preventative actions can be taken to avoid potential small-signal stability (SS) risks. To this end, this paper proposes a SS prediction approach based on the grid strength metric of generalized short-circuit ratio (gSCR) under the mechanism of vertical federated learning. Specifically, the improved ridge regression prediction model is employed and its corresponding distributed training and the distributed predicting are derived by utilizing the separable characteristic of gradient vector calculation in the context of federated learning. On this basis, the original largescale predicting problem is decomposed into a large number of small-scale subproblems, and each subproblem is calculated locally by the corresponding wind farm. The feature data information of adjacent wind farms can be effectively used to improve the accuracy of the prediction of the stability margin while ensuring the data privacy and security of all participants. Finally, simulation results illustrate the effectiveness and efficiency of the proposed approach under various scenarios.

关键词： Training Accuracy Federated learning Simulation power system stability Wind farms Predictive models Stability analysis Vectors Security

来源：评论

学校读者我要写书评

暂无评论

Insulating materials for realising carbon neutrality:Opportunities,remaining issues and challenges

引用

High Voltage 2022年第4期7卷 610-632页

作者： Chuanyang Li Yang Yang Guoqiang Xu Yao Zhou Mengshuo Jia Shaolong Zhong Yu Gao Chanyeop Park Qiang Liu Yalin Wang Shakeel Akram Xiaoliang Zeng Yi Li Fangwei Liang Bin Cui Junpeng Fang Lingling Tang Yulin Zeng Xingtao Hu Jiachen Gao Giovanni Mazzanti Jinliang He Jianxiao Wang Davide Fabiani Gilbert Teyssedre Yang Cao Feipeng Wang Yunlong Zi The State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijingChina Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong KongChina Simpson Querrey Institute Northwestern UniversityEvanstonIllinoisUSA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPennsylvaniaUSA Department of Information Technology and Electrical Engineering ETH ZürichZürichSwitzerland School of Electrical and Information Engineering Tianjin UniversityTianjinChina Department of Electrical and Computer Engineering Mississippi State UniversityMississippi StateMississippiUSA Electrical and Electronic Engineering The University of ManchesterManchesterUK Department of Electrical Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghaiChina Key Laboratory of Control of Power Transmission and Conversion(SJTU) Ministry of EducationShanghaiChina College of Electrical Engineering Sichuan UniversityChengduChina Shenzhen Institute of Advanced Technology Chinese Academy of Sciences ShenzhenShenzhenChina School of Electrical Engineering Wuhan UniversityWuhanChina School of Integrated Circuits Tsinghua UniversityBeijingChina Jiangsu Jinxin Electric Appliance Co.Ltd. YangzhouChina Tai'an Tiancheng Safety Evaluation Co. Ltd.Tai'anChina Department Electrical Electronic and Information EngineeringUniversity of BolognaBolognaItaly National Engineering Laboratory for Big Data Analysis and Applications Peking UniversityBeijingChina Laplace Paul Sabatier Universityand CNRSToulouseFrance Electrical and Computer Engineering University of ConnecticutStorrsConnecticutUSA State Key Laboratory of Power Transmission Equipment&System Security and New Technology School of Electrical EngineeringChongqing UniversityChongqingChina Thrust of Sustainable Energy and Environment The Hong Kong University of Science and Technology(Guangzhou)GuangzhouChina De

The 2050 carbon-neutral vision spawns a novel energy structure revolution,and the construction of the future energy structure is based on equipment *** material,as the core of electrical power equipment and electrified transportation asset,faces unprecedented challenges and *** goal of carbon neutral and the urgent need for innovation in electric power equipment and electrification assets are first *** engineering challenges constrained by the insulation system in future electric power equipment/devices and electrified transportation assets are *** materials,including intelligent insulating material,high thermal conductivity insulating material,high energy storage density insulating material,extreme environment resistant insulating material,and environmental-friendly insulating material,are cat-egorised with their scientific issues,opportunities and challenges under the goal of carbon neutrality being *** the context of carbon neutrality,not only improves the understanding of the insulation problems from a macro level,that is,electrical power equipment and electrified transportation asset,but also offers opportunities,remaining issues and challenges from the insulating material *** is hoped that this paper en-visions the challenges regarding design and reliability of insulations in electrical equipment and electric vehicles in the context of policies towards carbon neutrality *** authors also hope that this paper can be helpful in future development and research of novel insulating materials,which promote the realisation of the carbon-neutral vision.

关键词： neutral insulation extreme

来源：评论

学校读者我要写书评

暂无评论

Research on Capacity Allocation and operation Scheduling of Independent Energy Storage in Electricity Spot Market

Research on Capacity Allocation and Operation Scheduling of ...

引用

2023 IEEE Sustainable power and Energy Conference, iSPEC 2023

作者： Tian, Zihao Feng, Donghan Zhou, Yun Xu, Shaolun Luo, Ling Liu, Jing The Department of Electrical Engineering School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China The Key Laboratory of Control of Power Transmission and Conversion of Ministry of Education Shanghai Jiao Tong University Shanghai200240 China The State Grid Shanghai Municipal Electric Power Company Shanghai200437 China

ISBN: (纸本)9798350322699

With the deepening of China's electricity market reform and the continuous development of energy storage (ES) technology, ES participation in the electricity market as an independent subject has become a new trend. In this paper, a bi-level optimization model of ES capacity allocation and operation scheduling is established under the background of electricity spot market. Firstly, the framework of ES participating in the electricity energy spot market and frequency regulation auxiliary service market is expounded. Secondly, the upper-level capacity allocation model is formulated with the goal of maximizing the market benefits of ES and deliver ES allocation results to the lower-level model. Then, the lower-level operation scheduling optimization model is constructed with the goal of minimizing the electricity purchase costs of the market operator and the operation results and the clearing price are fed back to the upper-level model. Finally, the feasibility and effectiveness of the proposed method are verified by a case of a coastal region in eastern China. © 2023 IEEE.

关键词： Capacity Allocation Energy Storage operation Scheduling Spot Market

来源：评论

学校读者我要写书评

暂无评论

Round-trip information timeliness based energy storage control for cyber-physical integrated multi-energy system

引用

Journal of Energy Storage 2025年 127卷

作者： Liao, Haijun Zhang, Hongshuo Che, Wenxuan Li, Ziming Zhou, Wen Zhou, Zhenyu Tariq, Muhammad State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing102206 China Electrical Engineering Department National University of Computer and Emerging Sciences Islamabad44000 Pakistan

The cyber–physical integrated multi-energy system (MES) with energy storage plays an essential supporting role in achieving low-carbon operation of distribution grid. Distributed consensus optimization is the core principle to facilitate cost-efficient operation of MES under the volatility of renewable energy output and load. However, the economic control of cyber–physical integrated MES neglects the close coupling between the physical-domain control stability and cyber-domain information interaction timeliness. Meanwhile, there lacks a timeliness model reflecting the timeliness loss in the round-trip information interaction among multi-energy subsystems, and a consensus optimization method considering the round-trip information timeliness and multi-energy subsystem influences, thereby weaking control stability and convergence performance. Thus, a round-trip timeliness model for cyber-domain MES is developed, and a cyber–physical integrated MES control problem is constructed to minimize the total control cost by jointly optimizing cyber-domain interaction sequence, physical-domain consensus variable weights, and multi-energy subsystem output power. A round-trip timeliness minimization-driven control algorithm for cyber–physical integrated MES is proposed. In the offline phase, K-means and radial basis function are used to fit the influence of MESs. In the online phase, a low-complexity externality matching algorithm is proposed to optimize the interaction sequence and adjust the consensus variable update process to improve information timeliness and control economy. Simulation results demonstrate that the proposed algorithm has superior performances in economic control of MES and convergence speed. © 2025

关键词： Boolean functions

来源：评论

学校读者我要写书评

暂无评论

SOC Balancing control Based on Multi-Agent for Multiple Energy Storage Units in MMC High power Energy Storage system

引用

CSEE Journal of power and Energy systems 2023年第3期11卷 1253-1261页

作者： Shijie Yan Qianxiang Shen Xiangjun Li Shuo Li Enhui Chu College of Information Science and Engineering Northeastern University Shenyang China Energy Storage and Electrical Engineering Department State Key Laboratory of Control and Operation of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing China

Since high power energy transmission is required for a grid-level energy storage system, a high-power energy storage system based on modular multilevel converter (MMC) is very promising at present. However, in order to produce desired high power, an MMC-based energy storage system needs to be constructed by cascading a large number of energy storage units, which will make it difficult to balance state of charge (SOC) of these units. To solve SOC unbalancing of these units, special modeling and control methods are employed and an SOC balancing controller is designed. First, a high-power energy storage system is modeled as a multi-agent model. Then, an event-trigger control method is used to control information transmission and operation period of the energy storage agent, which further reduces the amount of communication and computation. Moreover, observers are designed to estimate battery current, which can reduce in half the amount of status information that needs to be collected. Finally, the simulation platform of the MMC-based storage system is established with MATLAB, the proposed SOC balancing control method is simulated and its validity is verified.

关键词： state of charge Observers Fluctuations Batteries Voltage control Renewable energy sources Real-time systems

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：