检索结果-内蒙古大学图书馆

Power and Electrical Engineering (ACPEE), 5th Asia Conference on

作者： Jifeng Li Jun Wu Xingtang He Kuizheng Song Dalian Electric Power Supply Company State Grid Liaoning Electric Power Supply Co. Ltd Dalian China Key Laboratory of the Ministry of Education on Smart Power Grids Tianjin University Tianjin China Dispatching and Control Center State Grid Liaoning Electric Power Supply Co. Ltd Shenyang China

Reasonable and effective assessments of power system resilience and targeted improvement measures are critical for improving clean energy consumption rates and building modern power systems. Conventional power system resilience assessments do not sufficiently account for the macroscopic grid structure or the correlations between static and dynamic resilience. Therefore, this paper proposes a power system resilience evaluation method that considers static network topology and dynamic operational adjustments. First, the power system resilience analytical framework is established. Second, the evaluation indicators of static resilience and dynamic resilience of a power system are proposed, and these indicators are analyzed using complex network theory and a dynamic adjustment strategy, respectively. Finally, the validity and applicability of the theoretical methods proposed herein are evaluated based on actual grid structures.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Reliability Evaluation of a Regional Integrated Energy System Based on Complex Network Theory

Reliability Evaluation of a Regional Integrated Energy Syste...

引用

Sustainable Power and Energy Conference (iSPEC)

作者： Jifeng Li Kuizheng Song Xingtang He Hao Luo Dalian Electric Power Supply Company State Grid Liaoning Electric Power Supply Co. Ltd Dalian China Dispatching and Control Center State Grid Liaoning Electric Power Supply Co. Ltd Shenyang China Key Laboratory of the Ministry of Education on Smart Power Grids Tianjin University Tianjin China Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Northeast Electric Power University Jilin China

ISBN: (纸本)9781665414401

Most of the methods currently used to evaluate the reliability of integrated energy supply mainly consider such systems on a microgrid scale and focus on the effects of interactions among various energy carriers on the overall energy supply reliability of the system. As a result, it is difficult to analyze the system reliability in terms of its topology. Therefore, this paper proposes an approach for evaluating the reliability of a regional integrated energy system based on complex network theory. First, the feasibility of complex network theory application was analyzed based on the structural framework of the regional integrated energy system. Then, a weighted complex network model containing network characteristics was constructed by improving the “distance” parameter in the complex network theory. Employing this model enabled the proposal of reliability evaluation indices, including nodes and the entire system, from the perspective of the system network topology. Finally, the effectiveness and applicability of the developed method were verified by constructing a test system. The application of complex network theory for reliability evaluations of regional integrated energy systems described in this paper provides guidance for planning and constructing future systems at the level of topology reliability.

关键词： Couplings Complex networks Microgrids Energy conversion Reliability theory Propagation losses Topology

来源：评论

学校读者我要写书评

暂无评论

Two-Stage Low-Carbon Economic Dispatch of an Integrated Energy System Considering Flexible Decoupling of Electricity and Heat on Sides of Source and Load

SSRN

引用

SSRN 2024年

作者： Yang, Lijun Gao, Yejin Zhang, Pei Tan, Xiaolin An, Jiakun School of Electrical Engineering Yanshan University Qinhuangdao066004 China Key Laboratory of Power Electronics for Energy Conservation and Drive Control of Hebei Province Yanshan University Qinhuangdao066004 China Key Laboratory of Smart Grid Ministry of Education Tianjin University Tianjin300072 China Economic and Technological Research Institute of State Grid Hebei Electric Power Shijiazhuang050000 China

Under the goal of "double carbon", in order to enhance the level of new energy consumption, a low-carbon economic planning strategy with flexible decoupling of electricity and heat is proposed, by introducing a new type of electric-thermal coupling equipment on both sides of the source and load. Firstly, a wind power(WT) – power to ammonia(P2A) - CHP units - thermal power (TH) units joint operation strategy is proposed on the source side. This strategy realizes the conversion of abandoned wind to green ammonia to ammonia coal hybrid generation and the decoupled operation of CHP units. Secondly, A dynamic incentive demand response model is developed to meet the demand of high proportion distributed PV in situ consumption on the load side. The dynamic incentive price guides distributed power-to-heat load to change the response capacity, tracks the abandonment of wind and light, realizes the flexible conversion of power and heat load. On this basis, A two-stage thermoelectric decoupling model is established. In the day-ahead phase, the source-side electric-thermal-ammonia joint operation strategy is considered, and the electric and thermal energy supply plans are adjusted centrally;In the intra-day phase, the flexible adjustment range of power-to-heat devices and the heat load inertia on the load side are taken into account, and the electricity and heat planning strategies are adjusted in a distributed-centralised manner in conjunction with the source side. Finally, the results show that the proposed scheme can promote the absorption of wind and light, and can achieve the goal of low-carbon economic dispatch. © 2024, The Authors. All rights reserved.

关键词： Ammonia

来源：评论

学校读者我要写书评

暂无评论

Evaluation Approach for CPS Assessment Fee Return Method Based on Sequential Game of Two Provinces

Evaluation Approach for CPS Assessment Fee Return Method Bas...

引用

Power and Electrical Engineering (ACPEE), 5th Asia Conference on

作者： Yuancheng Miao Lifeng Wang Zijie Chen Yutong Li Bingbing Song Xiaobi Teng Dispatch and Control Branch Center East China Branch of State Grid Corporation of China Shanghai China Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai Jiao Tong University Shanghai China College of Smart Energy Shanghai Jiao Tong University Shanghai China

ISBN: (数字)9798350309638

ISBN: (纸本)9798350309645

Under the current inter-provincial tie-line power assessment mechanism in China, regional power grids typically return assessment fees to each province based on their relative tie-line and frequency control performance. However, under this return method, if all provinces in a regional grid perform poorly in frequency regulation capacity, the returned control performance standard (CPS) fines for each province will be close, resulting in a lower penalty for power and frequency over-limit violations on provincial grid interconnections. To simulate and compare the decision-making of provincial dispatch and control centers regarding automatic generation control (AGC) adjustable capacity under different CPS assessment fee return methods, this article proposes a two-province game model. In this model, the two provinces follow best response dynamics for alternating frequency regulation simulation and scheduling optimization until a balance is reached or the variation in reserve capacity is within a certain range. Testing different combinations of assessment prices and return methods, the results show that determining and announcing the provinces to receive fine returns based on their ranking in assessed electricity quantity can better motivate provinces to improve frequency regulation performance.

关键词： Electricity Power system dynamics Games Automatic generation control Dynamic scheduling Power grids Game theory

来源：评论

学校读者我要写书评

暂无评论

Current Compensation-Based Transient Stability Enhancement for an Islanded Microgrid

Current Compensation-Based Transient Stability Enhancement f...

引用

Power System and Green Energy Conference (PSGEC)

作者： Yawen Ding Fei Gao Kai Hou Yingwei Jiang Xu Zhong Hang Yin Key Laboratory of Control of Power Transmission and Conversion Ministry of Education College of Smart Energy Shanghai Jiao Tong University Shanghai China Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Dept. of Electrical Engineering Shanghai Jiao Tong University Shanghai China NARI Group Corporation (State Grid Electric Power Research Institute) Nanjing China

ISBN: (数字)9798350365573

ISBN: (纸本)9798350365580

With the increasing incorporation of renewable energy via power electronic converters, islanded microgrids are susceptible to transient instability when faced with large disturbances, attributed to converters’ low inertia and high nonlinearity. This paper introduces a current compensation-based control strategy to enhance transient stability of an islanded MG. By incorporating frequency deviation between grid-following converter and grid-forming converter into current controller of grid-following converter, the balance between the system’s equivalent input and output torques can be accelerated. Compared with previous stability-enhanced method, the proposed strategy demonstrates superior performance in the aspect of small overshoot and fast convergence. Simulation results validate the analysis and effectiveness of this strategy.

关键词： Simulation grid following Microgrids Power system stability Stability analysis Power electronics Transient analysis Frequency control Power generation grid forming

来源：评论

学校读者我要写书评

暂无评论

Transient Stability Analysis and Enhancement of an Islanded Microgrid with grid-forming Converters and grid-following Converters

Transient Stability Analysis and Enhancement of an Islanded ...

引用

Power System and Green Energy Conference (PSGEC)

作者： Yawen Ding Fei Gao Kai Hou Yingwei Jiang Xu Zhong Hang Yin Key Laboratory of Control of Power Transmission and Conversion Ministry of Education College of Smart Energy Shanghai Jiao Tong University Shanghai China Dept. of Electrical Engineering Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai Jiao Tong University Shanghai China NARI Group Corporation (State Grid Electric Power Research Institute) Nanjing China

ISBN: (数字)9798350365573

ISBN: (纸本)9798350365580

The rising integration of renewable energy through power electronic converters has heightened the susceptibility of islanded microgrids to transient instability under large disturbances, primarily due to the converters’ low inertia and high nonlinearity. For an islanded microgrid with multiple converters, this paper estimates its transient stability based on Takagi-Sugeno method and introduces a phase compensation-based control strategy to enhance its transient stability. By incorporating angle difference between grid-following converter and grid-forming converter into current controller of grid-following converter, the balance between the system’s equivalent input and output torques can be accelerated. Simulation results validate the analysis and effectiveness of this strategy.

关键词： grid following Simulation Microgrids Power system stability Stability analysis Power electronics Takagi-Sugeno model Transient analysis Power generation grid forming

来源：评论

学校读者我要写书评

暂无评论

Design and Implementation of Lightweight Manmachine Terminal Screen Interactive Client

Design and Implementation of Lightweight Manmachine Terminal...

引用

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

作者： Zhimeng Lv Lingyan Que Caishen Fang Xingzhi Wang Yuan He Kun Huang NARI Group Corporation (State Grid Electric Power Research Institute) NARI Technology Co. Ltd. Nanjing China State Grid Zhejiang Electric Power Co. Ltd. No.8 of Huanglong Road Xihu District Hangzhou China East-China Branch of State Grid Co. Ltd. No. 201 Nanjing East Road Huangpu District Shanghai NARI Group Corporation (State Grid Electric Power Research Institute) (National Key Laboratory of smart grid protection and operation control) NARI Technology Co. Ltd. Nanjing China

ISBN: (数字)9781728196060

ISBN: (纸本)9781728196077

According to the characteristics of the “physical distribution and logical integration” of the new generation dispatching automation system, this paper designs a lightweight human-machine terminal display architecture. It also proposes the componentization of the screen and its rendering technology to realize the display of electrical primitives, chart primitives, and non-viewable primitives on lightweight man-machine terminals. Besides, this paper proposes the GIS visual display technology to meet the needs of geographic information display in the dispatch automation system and put forward the interaction technology of picture linkage to improve the interaction flexibility of picture components. Relevant research results have developed prototype system and applied in the field pilot.

关键词： Couplings Visualization Automation Prototypes Rendering (computer graphics) Man-machine systems Geographic information systems

来源：评论

学校读者我要写书评

暂无评论

state space modelling and stability analysis of DFIG wind farm integrated through VSC-HVDC

State space modelling and stability analysis of DFIG wind fa...

引用

12th International Conference on Renewable Power Generation (RPG 2023)

作者： H. Su J. Xu K. Wang J. Zhou R. Yokoyama Y. Liang Key Laboratory of Control of Power Transmission and Conversion Ministry of Education (Shanghai Jiao Tong University) Shanghai People's Republic of China State Grid Jiaxing Power Supply Company Jiaxing People's Republic of China Graduate School of Environment and Energy Engineering Waseda University Tokyo Japan State Grid Smart Grid Research Institute Beijing People's Republic of China

In the interconnected system of doubly-fed induction generator (DFIG) wind farm and voltage source converter-based high-voltage direct current (VSC-HVDC), the sub-synchronous oscillation caused by the interaction between power electronic equipment and flexible DC transmission system occasionally occurs, which will endanger the safety and stability of the power systems. In order to reveal the mechanism of the above types of electrical oscillations, this paper extends the DFIG grid-connected state space model to a 24 orders detailed state space model considering DFIG connected with wind farm side VSC (WF-VSC) system. Then, the dominant state variables that affect the interconnected oscillation modes are identified by participation factor analysis. In addition, the influence of the operating point, controller, and electrical parameters on the stability of the interconnected system is analyzed based on the eigenvalue method. The analysis results show that the controller is crucial to stability, especially for the WF-VSC station. The conclusion of stability analysis is also verified by time domain simulation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Distributed Optimization of Multi-Microgrid Integrated Energy System with Coordinated control of Energy Storage and Carbon Emission

SSRN

引用

SSRN 2023年

作者： Shi, Linjun Cen, Zimeng Li, Yang Wu, Feng Lin, Keman Yang, Dongmei Lee, Kwang Y. College of Energy and Electrical engineering Hoahai University Jiangsu Nanjing211100 China State Key Laboratory of Smart Grid Protection and Control Nari Group Corporation Jiangsu Nanjing211106 China Department of Electrical & Computer Engineering Baylor University WacoTX76798 United States Yonsei Frontier Lab Yonsei University Seoul03722 Korea Republic of

The mutual optimization of multi-microgrid integrated energy system (MMIES) can effectively improve the overall economic and environmental benefits, which is drawing increasing interest in recent years. Aiming at the scenario where an MMIES is connected to the same node, the energy storage coordination control strategy and carbon emission management strategy are proposed, and an adaptive step-size method is applied to improve the distributed optimization of MMIES based on alternating direction multiplier method (ADMM). Firstly, the basic framework of MMIES containing cold, heat, electricity and gas energy is established, and a coordinated control strategy limiting the time of charge and discharge of energy storage system (ESS) is proposed. Then a multi-objective optimization model based on operating cost and environmental cost about CO2 emissions is formulated. Considering that different microgrids may be managed by different operators and different convergence speed of multi-objective optimization iteration, an adaptive step-size distributed iterative optimization method based on ADMM is used, which can effectively reduce the cost and protect the privacy of each microgrid. Finally, a system composed of three microgrids is taken as an example for simulation analysis. The results of distributed optimization are consistent with those of centralized optimization, and the proposed coordinated control strategy can effectively control the charge and discharge times of ESS, which verifies the effectiveness of the proposed method. © 2023, The Authors. All rights reserved.

关键词： Carbon

来源：评论

学校读者我要写书评

暂无评论

Identification Methods for Transformer Turn-to-Turn Faults and Inrush Current Based on Electrical Information

引用

Journal of Physics: Conference Series 2022年第1期2215卷

作者： Xinyi Gong Yuping Zheng Shuyan Pan Chonghao Wu Jinzhao Deng NARI Research Institute NARI Group Corporation (State Grid Electric Power Research Institute) Nanjing China State Key Laboratory of Smart Grid Protection and Control

Power transformer is the most imperative and crucial equipment in electrical power system. Accurately monitoring the occurrence of transformer faults and rapidly isolating the faults are of great significance to ensure the reliability of power supply and avoid serious damage to the transformer. There are many methods used in the transformer to monitor transformer running state. This paper provides a comprehensive overview of transformer turn-to-turn fault and inrush current identification methods based on electrical information, and expounds the systematic research content that needs to be carried out for transformer turn-to-turn fault identification methods based on magnetic flux leakage information.

关键词：

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：