检索结果-内蒙古大学图书馆

control, Modeling and Stability Analysis of DRU-based grid-forming Converter

Chinese Journal of Electrical Engineering 2025年第1期11卷 83-92页

作者： Wencong Wu Minzhi Wang Liang Tu Haiqing Cai Guanglei Yan Xiaohui Qu Haohan Gu Wei Chen State Key Laboratory of HVDC China Southern Power GridGuangzhou 510663China National Energy Power Grid Technology R&D Center Guangzhou 510663China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power Systems China Southern Power GridGuangzhou 510663China CSG Key Laboratory for Power System Simulation China Southern Power GridGuangzhou 510663China School of Electrical Engineering Southeast UniversityNanjing 210096China

Diode rectifier unit(DRU)-based high-voltage direct current(HVDC)transmissionsystems areeffectivein achieving the stableandeconomical operation of offshore *** theuncontrollable characteristicsof DRUs,a grid-forming(GFM)strategy forwind-turbine converters isnecessary to support offshore AC voltageand ***,the active power-synchronization control in traditional GFM converters is unsuitable for DRU-based GFM ***,the stability issue for DRU-based HVDC systems involving DRU-based GFM and grid-following(GFL)converters has not yet been *** solve these issues,this study begins with the characteristics of a DRU-based HVDC system and presents a control scheme for DRU-based GFM converters for power ***,the dq-frame impedance model of the DRU-based GFM converteris proposed for the stability analysis of the entire HVDC ***,a simulation platform is built to verify the model accuracy and system stability.

关键词： Diode rectifier unit offshore wind-powergeneration grid-forming converter impedance model stabilityanalysis

来源：评论

学校读者我要写书评

暂无评论

Enhanced Microgrid Energy Optimization: Integrating Load Prioritization and Dynamic Temporal Adaptation

引用

JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY 2025年第3期20卷 1207-1225页

作者： Pan, Ting-Zhe Hou, Jue Wang, Zong-Yi Li, Ke Jin, Xin Hao, Wen-Huan China Southern Power Grid Co Ltd Elect Power Res Inst CSG Guangzhou 510700 Peoples R China China Southern Power Grid Co Ltd Guangdong Prov Key Lab Intelligent Measurement & A Guangzhou 510663 Peoples R China China Southern Power Grid Co Ltd Elect Power Dispatching & Control Ctr Guangdong Po Guangzhou 510600 Peoples R China

In the context of island mode operation, a microgrid may can not supply sufficient power for loads due to various factors such as weather condition. To prioritize power supply for critical loads and improve microgrid energy management efficiency simutaneously, this study proposes a method integrating load power supply priority and dynamic time intervals for MG energy optimization *** prioritize power critical loads' energy demands, a penalty-based approach is introduced to minimize unsatisfied load power demands. Each load type has a defined unit penalty cost, regulating user demand response. In addition, dynamic time intervals are adopted to reduce the number of iterations as well as improve the RAM memory and processor utilization required for solving the microgrid energy optimization management model. Simulation tests on a microgrid comprized of distributed generations, battery energy storage systems, and energy consumption units were conducted to prove the effectiveness of the proposed method. Test results prove that when appropriately configuring dynamic time intervals, solution results obtained using the proposed method closely align with that derived from fixed time interval-based methods. Finally, the energy optimization management effects of the proposed method were compared with that of two latest methods. The comparison results demonstrate that if microgrid underwent four different disconnection scenarios from the main distribution network, the proposed method saves 19.27%, 18.75%, 20.74%, 34.92%, 25.47% time to achieve energy optimization management compared with that of the first latest method, and 20.51%, 20.81%, 21.10%, 36.05%, 27.89% time than that of the second latest method.

关键词： Load prioritization Dynamic temporal adaptation Demand response Microgrid Energy optimization

来源：评论

学校读者我要写书评

暂无评论

An equivalent modeling method for integrated water-wind-solar systems based on sparrow search algorithm

引用

Energy Informatics 2025年第1期8卷 1-16页

作者： Lu, Yuanhong Zhang, Jie Zhang, Jingyue Huang, Libin Guo, Haiping Hu, Binjiang Guo, Tianyu State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou510663 China National Energy Power Grid Technology R & D Centre Guangzhou510663 China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou510663 China CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou510663 China

In the context of extensive integration of renewable energy sources into the electrical grid, the grid's fault transient behaviors have undergone significant changes. However, conventional single-unit equivalent models fail to accurately capture the fault transient responses of combined wind-solar-hydro power stations and often require substantial computational resources, leading to reduced simulation efficiency. This study proposes a cluster-based equivalent modeling approach for hybrid wind-solar-hydro power plants using the Sparrow Search Algorithm. key factors influencing fault characteristics, including the distance to the Point of Common Coupling, DC-side current-limiting measures, irradiance levels, water flow rates, wind speeds, and reactive power at the outlet, are identified and used to construct a transient model. Euclidean distances are computed for these factors, and initial clustering centers for wind turbines are determined using an improved max–min distance technique. These factors and clustering centers serve as the training dataset to establish the clustering equivalent model. Simulation results, conducted on the MATLAB2022 platform, demonstrate that the SSA-based model outperforms the single-unit equivalent model by over 150 times in terms of accuracy. Additionally, the SSA-based model achieves a delay time, defined as the time required to compute the system's transient response after a fault, of less than 5 ms, which is less than one-twentieth of the delay time of the single-unit equivalent model. These improvements highlight the model's ability to accurately capture dynamic power responses under various disturbances, making it highly suitable for real-time applications in hybrid renewable energy systems. © The Author(s) 2025.

关键词： MATLAB

来源：评论

学校读者我要写书评

暂无评论

The electromagnetic transient simulation acceleration algorithm based on delay mitigation of dynamic critical paths

引用

Energy Informatics 2025年第1期8卷 1-12页

作者： Guo, Qi Lu, Yuanhong Zhang, Jie Zhang, Jingyue Huang, Libin Guo, Haiping Guo, Tianyu Tu, Liang State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou510663 China National Energy Power Grid Technology R & D Centre Guangzhou510663 China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou510663 China CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou510663 China

The task scheduling problem based on directed acyclic graphs (DAGs) has been proven to be NP-complete in general cases or under certain restrictions. In this paper, building upon existing scheduling algorithms, we introduce a static task scheduling algorithm based on directed acyclic graphs. By incorporating the proportion of task transmission delay as a guiding metric in the optimization process, processors can be prioritized for tasks with high latency, thereby improving computational efficiency. We first validate the theoretical feasibility of the algorithm using a theoretical case study and illustrate the algorithmic effectiveness using two real case studies, direct current (DC) model and alternating current (AC) model respectively. The research indicates that the scheduling algorithm proposed in this paper achieves an average scheduling length improvement of over 1.2% compared to the Heterogeneous Earliest-Finish-Time algorithm (HEFT) in topologies with high latency tasks. Additionally, the experiments show that the HEFT algorithm consumes 39.85us and the EMT-DM algorithm consumes 38.29us during simulation using DC, and the HEFT algorithm consumes 31.23us and the EMT-DM algorithm consumes 26.51us during simulation using AC, both of which are improved compared to the HEFT algorithm. © The Author(s) 2025.

关键词： Flow graphs

来源：评论

学校读者我要写书评

暂无评论

Partial Solution Operator Discretization-Based Methods for Efficiently Computing Least-Damped Eigenvalues of Large Time Delayed power Systems

引用

CSEE Journal of power and Energy Systems 2025年第2期11卷 671-682页

作者： Hua Ye Xiaofan Jia Muyang Liu Yutian Liu Sicong Zhang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of EducationShandong UniversityJinan 250061China School of Electrical Engineering Xinjiang UniversityUrumqi 830046China State Grid Jiangsu Electric Power Research Institute Nanjing 211103China

To investigate impact of time delays on the small signal stability of power systems, the least-damped eigenvalues with the smallest damping ratios have been calculated by eigen-analysis methods based on Solution Operator Discretization (SOD) with Pseudo-Spectral collocation (PS) and Implicit Runge-Kutta (IRK) methods. This paper evolves SOD-PSIIRK into their partial counterparts, i.e., PSOD-PSIIRK, with greatly enhanced efficiency and reliability in analyzing large-scale time delayed power systems. Compared with SOD-PSIIRK, PSOD-PSIIRK are characterized in constructing low order discretization matrices of solution operator as well as efficiently and directly solving the embedded Matrix-Inverse-Vector Products (MIVPs). The dimensions of the discretization matrices of solution operator are largely reduced as only the retarded state variables are discretized, rather than all state variables as in SOD-PSIIRK. Meanwhile, the proposed PSOD-PSIIRK optimize the most computationally expensive operations in SOD-PSIIRK by avoiding the iterative solutions to the two embedded MIVPs. PSOD-PS/IRK directly and efficiently compute the MIVPs via factorizing the Kronecker product-like discretization matrices of the solution operator into Schur complements. The Central China-North China ultra-high-voltage power grid with 80577 state variables serves to validate the proposed PSOD-PSIIRK and shows that compared with SOD-PSIIRK, the computational time consumed by PSOD-PSIIRK is cut down by 49.96 times without loss of any accuracy.

关键词： Eigenvalue analysis low frequency oscillation Schur complement decomposition small signal stability solution operator discretization spectral discretization time delay wide-area measurement system

来源：评论

学校读者我要写书评

暂无评论

Experimental Research on the Influence of Lightning Arrester Response Characteristics in HEMP Environment

Experimental Research on the Influence of Lightning Arrester...

引用

International Conference of Electrical, Electronic and Networked Energy Systems, EENES 2024

作者： Lei, Liu Ruihan, Qi Ruifa, Feng Junyang, Tian Lianpian, Jiang Zizheng, Shen State Key Laboratory of HVDC Electric Power Research Institute CSG Guangzhou China Power Dispatching and Control Center of Guangxi Power Grid Co. Ltd. Nanning China

ISBN: (纸本)9789819618675

The high-altitude electromagnetic pulse (HEMP) generated by a nuclear explosion in the outer atmosphere poses the most serious threat among all electromagnetic pulses due to its wide coverage (radius in thousands of kilometers), high attack intensity, and multiple destructive targets. However, there is currently no real experimental research on the impact of HEMP on the power grid, and the law of the impact of HEMP on the power grid is still in the early stage of research. This article will conduct a true type test on the HEMP response characteristics of lightning protection equipment in the power grid. Based on the response time of lightning arresters to lightning currents, this study experimentally investigates the response characteristics of lightning arresters when HEMP induce instantaneous high currents in wires. Based on the experimental results, the effectiveness of existing lightning arresters in responding to electromagnetic pulses is analyzed, and improvement suggestions for the response time of lightning arresters to HEMP are proposed. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Electromagnetic pulse

来源：评论

学校读者我要写书评

暂无评论

grid Strength Assessment Method for Evaluating Small-signal Synchronization Stability of grid-following and grid-forming Converters Integrated Systems

引用

Journal of Modern power Systems and Clean Energy 2025年第1期13卷 55-65页

作者： Qianhong Shi Wei Dong Guanzhong Wang Junchao Ma Chenxu Wang Xianye Guo Vladimir Terzija Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education School of Electrical EngineeringShandong UniversityJinan 250061China Electric Power Research Institute State Grid Zhejiang Electric Power Co.Ltd.Hangzhou 310014China School of Engineering Newcastle UniversityNewcastle upon TyneUK

Oscillations caused by small-signal instability have been widely observed in AC grids with grid-following(GFL)and grid-forming(GFM)*** generalized short-circuit ratio is commonly used to assess the strength of GFL converters when integrated with weak AC systems at risk of *** paper provides the grid strength assessment method to evaluate the small-signal synchronization stability of GFL and GFM converters integrated ***,the admittance and impedance matrices of the GFL and GFM converters are analyzed to identify the frequency bands associated with negative damping in oscillation modes dominated by heterogeneous synchronization ***,based on the interaction rules between the short-circuit ratio and the different oscillation modes,an equivalent circuit is proposed to simplify the grid strength assessment through the topological transformation of the AC *** risk of sub-synchronization and low-frequency oscillations,influenced by GFL and GFM converters,is then reformulated as a semi-definite programming(SDP)model,incorporating the node admittance matrix and grid-connected device *** effectiveness of the proposed method is demonstrated through a case analysis.

关键词： grid-following converter grid-forming converter grid strength assessment small-signal stability

来源：评论

学校读者我要写书评

暂无评论

Adaptive Model Predictive control for Servo Motor within High-Voltage Circuit Breaker 19th

Adaptive Model Predictive Control for Servo Motor within Hig...

引用

19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Su, Yi Gao, Lei Lu, Yufeng Li, Baofeng Huang, Wei Rao, Xiajin Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment Electric Power Research Institute of Guangxi Power Grid Co. Ltd. Nanning China

ISBN: (纸本)9789819608966

This paper addresses a servo control technology that uses a permanent magnet synchronous motor (PMSM) to drive the high-voltage circuit breaker. In order to guarantee that the motion of high-voltage circuit breaker’s contacts is not affected by the uncertainties of the PMSM model, an adaptive model predictive control method is developed. In the proposed adaptive model predictive control method, a current predictive model is designed to estimate the currents at the next control cycle, and the deadbeat current predictive control of PMSM is achieved;the adaptive law is employed to compensate the effects resulting from the parameter uncertainties, where the cost function is chosen to reduce the error between the reference signals and the predicted current. The results explain that the proposed method has suppressed the influence of motor parameter mismatch due to the parameter uncertainties, and improve dynamic tracking and robustness. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Permanent magnets

来源：评论

学校读者我要写书评

暂无评论

Active potential mining of day-ahead invitation demand response for industrial conveying loads

引用

JOURNAL OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2025年

作者： Cai, Xinlei Pan, Tingzhe Yu, Zhenfan Jin, Xin Hou, Jue Cao, Wangzhang Wang, Qin Guangdong Power Grid Co Ltd Power Dispatching Control Ctr Guangzhou 510335 Peoples R China CSG Elect Power Res Inst Guangzhou Peoples R China Guangdong Prov Key Lab Intelligent Measurement & A Guangzhou Peoples R China

Aiming at industrial loads with high flexibility, such as material conveying processes, an active potential mining method for day-ahead invitation demand response is studied through optimization. Under the day-ahead invitation demand response mechanism, an aggregation method for industrial conveying loads and an active potential mining framework for load aggregators participating in demand response are proposed. The demand response potential mining of the conveying load aggregators is formulated as optimization problems. Through the constructions of publishment functions attaching to demand response period, a potential mining model for day-ahead invitation demand response and an integrated potential mining model capable to response to day-ahead invitation demand and time-of-use tariff simultaneously are built, respectively. A cement clinker conveying system is taken as the study case to verify the demand response active potential mining models under multi-operating conditions. The results show that the proposed active potential mining models can actively participate in day-ahead invitation demand response and obtain the maximum potential, meanwhile, satisfy all the production requirements and safety constraints. The models can be references for highly flexible industrial loads to participate in demand response.

关键词： industrial loads with high flexibility day-ahead invitation demand response material conveying demand response potential mining cement clinker conveying system

来源：评论

学校读者我要写书评

暂无评论

ADRC Based Sliding Mode control for PMSM Within High-Voltage Circuit Breaker

ADRC Based Sliding Mode Control for PMSM Within High-Voltage...

引用

International Conference of Electrical, Electronic and Networked Energy Systems, EENES 2024

ISBN: (纸本)9789819620418

This paper addresses control technology of permanent magnet synchronous motor (PMSM) which is employed to drive the high-voltage circuit breaker. In order to improve the current controllers’ tracking performance of PMSM with parameter uncertainties, an active disturbance rejection control (ADRC)-based sliding mode control (SMC) strategy is proposed. In the proposed control method, SMCs are developed taken account of the boundary of the uncertainties, and extended state observers (ESOs) in parallel are designed to estimate the uncertainties in the PMSM model. Compared with the SMC method, the value control parameters of ADRC-SMC method are bettered by using ESO. The simulation results show that the proposed ADRC-SMC method can improve dynamic tracking and minimize the chattering of PMSM system. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Disturbance rejection

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：