检索结果-内蒙古大学图书馆

2023 International Conference on power System technology, powerCon 2023

作者： Xue, Yinjuan Chen, Qifang Cai, Haiqing Xia, Mingchao Gu, Haohan School of Electrical Engineering Beijing Jiaotong University Beijing China State Key Laboratory of Hvdc Electric Power Research Institute China Southern Power Grid National Energy Power Grid Technology R&d Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China Csg Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China

ISBN: (纸本)9798350300222

As the high-quality flexible resource of the grid, electric vehicles (EVs) can provide multiple auxiliary services for the grid at the same time. However, due to the one-way charging and discharging of EVs, as well as the limitation of power and capacity, which may cause availability conflicts when EVs participate in different auxiliary services simultaneously. This paper focuses on the analysis of the conflict mechanism of EVs participating in the secondary frequency regulation and peak shaving ancillary services at the same time. The impact mechanism between different auxiliary services in this conflict mode is revealed from the two aspects of limit conflict and charging and discharging instruction conflict, and the results of availability conflict of the two types of auxiliary services are verified and analyzed through simulation examples. © 2023 IEEE.

关键词： Frequency modulation

来源：评论

学校读者我要写书评

暂无评论

key technologies and development trends of VSC-HVdc transmission for offshore wind power

Renewable Energy System and Equipment

引用

Renewable Energy System and Equipment 2025年第1期1卷 35-49页

作者： Zhiyuan He Jie Yang Guangfu Tang Yuexi Yang Zhenyu Du Sheng Zhang State Key Laboratory of Advanced Power Transmission Technology (China Electric Power Research Institute Co. Ltd.) Beijing 100192 China Beijing Huairou Laboratory Huairou District Beijing 101400 China China Beijing Key Laboratory of DC Grid Technology and Simulation (China Electric Power Research Institute Co. Ltd.) Beijing 100192 China

Developing offshore wind power, particularly in deep waters, is recognized as a vital approach to tackling the energy crisis and facilitating a low-carbon transition. VSC-HVdc transmission, leveraging its technological prowess, has emerged as the principal means for transmitting large-scale, remotely located offshore wind energy. In recent years, numerous VSC-HVdc grid interconnection projects for offshore wind farms have been commissioned globally, with the technology itself continually advancing and improving. This paper, in light of prevailing technological trends, provides a comprehensive overview of the advancements in key technologies within VSC-HVdc transmission tailored to the requirements of offshore wind power evacuation, encompassing system topology, operating modes, control and protection systems, essential equipment, and platform configurations. It further details the profiles of representative offshore wind power VSC-HVdc transmission and grid connection projects currently operational or under construction, and delves into the prospective development trajectories and future research avenues for offshore wind power VSC-HVdc transmission technology.

关键词： VSC-HVdc Offshore wind power System topology Control and protection Core equipment Offshore platform

来源：评论

学校读者我要写书评

暂无评论

Short-Term Prediction of Wind Farm Cluster power Based on Load Risk Scenarios and Improved Weighted Loss During Peak and Valley Load Periods 7

Short-Term Prediction of Wind Farm Cluster Power Based on Lo...

引用

7th IEEE Conference on Energy Internet and Energy System Integration, EI2 2023

作者： Yang, Mao Guo, Yunfeng Wang, Bo Wang, Zhao Ministry of Education Northeast Electric Power University Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Jilin132012 China China Electric Power Research Institute National Key Laboratory of Renewable Energy Grid-Integration Beijing100192 China

ISBN: (纸本)9798350345094

Load peak and valley periods as the key scheduling scenarios, the effectiveness of wind power prediction becomes extremely important, in order to minimize the impact of wind power on the power system due to prediction errors, a short-term prediction method of wind farm cluster power considering risk scenarios and improved loss function is proposed. Firstly, the coupled correlation mechanism between meteorological type and load demand is explored, and the load risk scenario and meteorological correlation are derived. Second, according to the risk scenarios of load demand, the traditional loss function is improved and used to train the power prediction model under the risk scenarios. Then, a dynamic division strategy of wind farm clusters considering the meteorological similarity of the previous day is proposed to obtain the sub-clusters of similar output. Finally, the model with improved weighted loss function is used to predict the wind power for different regional sub-clusters and extended to wind farm clusters. The above method is validated using the wind farm clusters in West Inner Mongolia, China. and the results show that in the low-risk load scenario, the accuracy of the model with improved loss is higher, and the accuracy decreases with the increase of the load risk level, but the overall risk indexes are significantly lower than the method with traditional loss function, which proves the validity of the proposed method. © 2023 IEEE.

关键词： Risk assessment

来源：评论

学校读者我要写书评

暂无评论

A Fault Ride-Through Method Based on Energy Dissipation Device in the Scenario of Flexible HVdc grid Connection of Offshore Wind power 4

A Fault Ride-Through Method Based on Energy Dissipation Devi...

引用

4th International Conference on Electrical Engineering and Control Technologies, CEECT 2022

作者： Huang, Xifang Wang, Yu Ge, Jing Chi, Chengbin Liu, Fusuo State Grid Electric Power Research Institute Stability Technology Branch Company Nari Group Corporation Nanjing China State Grid Smart Grid Research Institute Co. Ltd Beijing Key Laboratory of Dc Grid Technology and Simulation Beijing China State Grid Smart Grid Research Institute Co. Ltd State Key Laboratory of Advanced Power Transmission Technology Beijing China

ISBN: (纸本)9781665498999

The flexible HVdc transmission technology based on the modular multilevel converter (MMC) topology has a very broad application prospect in the process of large-scale renewable energy collection and transmission. This technology has become one of the best choices for long-distance offshore wind power farms to connect to the onshore power grid. In view of the special working conditions such as overvoltage in the fault state, this article proposes a controllable large-capacity self-recovery energy-dissipation device for the first time to improve the transient characteristics of the dc and AC power system. The proposed scheme has the advantages of no harmonic generation during operation, relatively simple control strategy and high current impact resistance. The electromagnetic transient simulation shows that the proposed scheme can effectively solve the overvoltage problem of dc in the offshore wind power flexible HVdc system, and improve the reliability of the HVdc system. © 2022 IEEE.

关键词： Energy dissipation

来源：评论

学校读者我要写书评

暂无评论

Research on the Configuration and Capacity Calculation of dc Side Dynamic Braking System

Research on the Configuration and Capacity Calculation of DC...

引用

HVdc (HVdc), International Conference on

作者： Yu Bai Yuexi Yang Xiao Zhou Zhenyu Du Yinghong Hu Yu Li National Key Laboratory of Advanced Power Transmission Technology Beijing Key Laboratory of DC Grid Technology and Simulation State Grid Smart Grid Research Institute Co. Ltd. Beijing China Electric Power Research Institute State Grid JiBei Electric Power Co. Ltd. Beijing China

ISBN: (数字)9798350387759

ISBN: (纸本)9798350387766

The Flexible dc Transmission technology circumvents the limitation of transmission distance caused by the charging power of AC cables. Additionally, it boasts technical advantages such as effectively isolating the interactions between onshore AC power grids and offshore wind farms, providing stable grid-connected voltage for offshore wind farms, and enabling flexible regulation of system operations. These factors make it the preferred technology for transmitting power from remote offshore wind farms. The offshore wind power flexible grid-connected system incorporates a dc-side dynamic braking system, which functions to absorb excess power injected by the wind farm and prevent system overvoltage when the AC main grid malfunctions, leading to the inability of the onshore converter station to deliver rated power. In this paper, the technical route, configuration scheme and capacity demand of dc side dynamic braking systems are studied, and the dc side dynamic braking system configuration scheme applicable to unipolar and bipolar isolated island new energy transmission flexible system is proposed, and the capacity demand of dc side dynamic braking system is analyzed, and the capacity design scheme of dc side dynamic braking system that conforms to the national calibration and meets the demand of system power balancing and fault ride-through and other requirements under the faulty AC system is proposed. The capacity design scheme of energy consuming devices is proposed in compliance with national calibration and can meet the system power balance and fault ride-through requirements in case of AC system failure and other working conditions.

关键词： HVdc transmission Systems operation power system dynamics Layout Wind farms power system stability Wind power generation Calibration Voltage control Standards

来源：评论

学校读者我要写书评

暂无评论

Optimal allocation of dynamic reactive power of LCC-HVdc receiving–end power gird with dynamic load 18

Optimal allocation of dynamic reactive power of LCC-HVDC rec...

引用

18th International Conference on AC and dc power Transmission, ACdc 2022

作者： Zhu, Lin Fan, Zheng Kou, Longze Li, Fangyuan Gu, Huaiguang State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co. Ltd. Changping District Beijing102209 China Beijing Key Laboratory of DC Grid Technology and Simulation State Grid Smart Grid Research Institute Co. Ltd. Changping District Beijing102209 China

ISBN: (数字)9781839537615

ISBN: (纸本)9781839537615

Firstly, this paper analyzes the mechanism between reactive power and transient voltage of line commutated converter HVdc (LCC-HVdc) receiving-end power grid, and the physical process in three periods is sorted out according to the time scale. The interaction between dynamic load and LCC-HVdc during AC system fault is studied. Based on this, the necessity of dynamic reactive power compensation is proposed. The simulation analysis shows that the dynamic reactive power compensation can effectively improve the transient voltage stability during fault, and can effectively prevent the diffusion of dynamic load transient instability in the heavy load area, and the compensation effect of connected to the low-voltage bus is better than that to the high-voltage bus. The research results of this paper have a significant effect on improving the transient voltage characteristics of LCC-HVdc receiving-end power grid with high proportion of dynamic load, and can guide the actual operation of the project. © ACdc 2022. All rights reserved.

关键词： Reactive power

来源：评论

学校读者我要写书评

暂无评论

Technical and Economic Analysis of Multiple Types of Wind power Convergence and Transmission Methods in Typical Scenarios of Land and Sea

Technical and Economic Analysis of Multiple Types of Wind Po...

引用

HVdc (HVdc), International Conference on

作者： Chengbin Chi Yanan Wu Jing Zhou Lin Zhu Qi Liu Jun Yan State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co. Ltd Beijing China Beijing Key Laboratory of DC Grid Technology and Simulation State Grid Smart Grid Research Institute Co. Ltd Beijing China

ISBN: (数字)9798350387759

ISBN: (纸本)9798350387766

With the global demand for renewable energy sources on the rise, wind power has emerged as a pivotal form of renewable energy, witnessing rapid expansion in its development and utilization worldwide. This article addresses large-scale wind power transmission scenarios both offshore and onshore. Based on the analysis of technical principles and engineering cost estimation data, it has designed 12 corresponding technical schemes for six advanced wind power collection and transmission methods from both technical and economic dimensions. A scenario with a transmission capacity of 1000MW was selected to conduct a comparative analysis of various types of power transmission technology schemes. The article provides a detailed exposition of the transmission capacity, reactive power compensation requirements, technical maturity, adaptability to scenarios, and economic viability for each scheme, and analyzes the technical and economic characteristics of each scheme. The research results indicate that the diode rectifier transmission scheme has the best economic performance, the VSC transmission scheme is the most technically mature, and the flexible low-frequency transmission scheme has certain economic advantages at medium and short distances. The diode parallel MMC and cascaded MMC schemes are economically second only to the diode rectifier scheme and also have the feature of not requiring wind farm networking. The aim of this paper is to provide guidance for the selection of scaled wind power transmission methods, to promote energy transformation, and to accelerate the construction of a new type of power system.

关键词： Renewable energy sources Costs HVdc transmission Rectifiers Estimation Wind power generation Wind farms Reliability engineering power system reliability Wind turbines

来源：评论

学校读者我要写书评

暂无评论

Adaptive Adjustment Method for grid-forming Energy Storage Parameters Based on Buffer Functions and Damping Switching

引用

Dianli Xitong Zidonghua/Automation of Electric power Systems 2025年第10期49卷 77-86页

作者： Cui, Yang Ma, Boyu Dai, Hanyang Ma, Xin Zhao, Yuting Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education Northeast Electric Power University Jilin132012 China China Electric Power Research Institute Beijing100192 China Electric Power Research Institute of State Grid Ningxia Electric Power Ltd. Co. Yinchuan750002 China

In the development tendency of high penetration of renewable energy and power electronic devices in new power systems, the grid-forming control technology for renewable energy integration mitigates the system stability issues caused by insufficient inertia and damping. However, it also reduces the dynamic regulation performance of the system. This paper proposes an adaptive adjustment method for grid-forming energy storage parameters based on buffer functions and steady-state/transient-state damping switching, to improve the dynamic regulation performance of the system. Firstly, the buffer functions are used in inertia adjustment to enhance the regulation smoothness of the system. Secondly, a steady-state/transient-state damping switching link is introduced in the damping adjustment to reduce the steady-state error of active power output during the frequency reduction process. Thirdly, the fuzzy control is employed to introduce correction terms for inertia and damping, and the stability of the proposed method is analyzed. Finally, simulations validate the effectiveness of the proposed method in enhancing small-signal stability and power response dynamic performance of the system. © 2025 Automation of Electric power Systems Press. All rights reserved.

关键词： Electric power transmission networks

来源：评论

学校读者我要写书评

暂无评论

The Correlation Mechanism that Micro-Structure Parameters of ZnO Varistor to the Macroscopic Electrical Characteristics 4

The Correlation Mechanism that Micro-Structure Parameters of...

引用

4th IEEE International Conference on Electrical Materials and power Equipment, ICEMPE 2023

作者： Meng, Pengfei Guo, Jingke Zhao, Long Lu, Wenhao Liu, Zheng Li, Shan Zhou, Kai Hu, Jun Sichuan University College of Electrical Engineering Chengdu China State Grid Corporatio of China State Grid Linyi Power Supply Company Linyi China Extra High Voltage Power Transmission Company of Csg High Voltage Technology Department Guangzhou China Northwest Institute of Nuclear Technology State Key Laboratory of Intense Pulsed Radiatio Simulation and Effect Xi'an China Tsinghua University State Key Laboratory of Control and Simulation of Power System and Generation Equipment Beijing China

ISBN: (纸本)9798350334678

As the core part of metal oxide arresters, ZnO varistor plays an important part in suppressing the overvoltage of power systems. With the development of UHV technology, the residual voltage and energy capacity of ZnO varistors have put forward higher requirements. The research is carried out from the perspective of material calculation, studied the correlation mechanism between micro-structure parameters and various macroscopic electrical characteristics of ZnO varistor based on Voronoi network. And the microstructure parameters such as grain size and size inhomogeneity were calculated and studied. The study simplified the optimization problem with multiple variates and objectives, into the one with two categories of variates and two categories of objectives. And then proposed specific strategies. The research provides important theoretical basis for improving the performance of ZnO varistors, and witch is of great significance for the design and manufacture of high-performance lightning arresters. © 2023 IEEE.

关键词： Microstructure

来源：评论

学校读者我要写书评

暂无评论

Modeling and simulation Method of Multi-element Electric Hydrogen Fusion System

Modeling and Simulation Method of Multi-element Electric Hyd...

引用

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

作者： Huaiguang Gu Jiapei Zhou Jin Li Dong Liu Danxi Liang Ji Li State Key Laboratory of Advanced Transmission Technology Beijing China Beijing Key Laboratory of DC Power Grid Technology and Simulation Beijing China China Electric Power Research Institute Co. Ltd. Beijing China Electric Power Research Institute of State Grid Xinjiang Electric Power Co. Ltd. Urumqi

ISBN: (数字)9798331523527

ISBN: (纸本)9798331523534

The comprehensive modeling and simulation method of multi-element electric hydrogen fusion system, are proposed in this paper. The corresponding control strategy for all the power electronic converters are designed to adapt the condition of power fluctuation and bi-directional energy flow. The typical energy and power flow mode of the system and the efficiency of the hydrogen production component are analyzed, which can be applied for the preliminary planning and design for this sort of integrated offshore clean energy system.

关键词： Green energy Adaptation models Hydrogen storage Hydrogen Production System integration Wind turbines Planning Transient analysis Load modeling

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：