检索结果-内蒙古大学图书馆

CIRED 2022 Shanghai Workshop

作者： Lian, Jie Zhang, Wen Zhao, Qi Zhang, Tingting Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education School of Electrical Engineering Shandong University Jinan China

ISBN: (纸本)9781839538391

The integrated power and gas system (IPGS) is drawing a lot of attention owing to its superiority in improving energy efficiency. State estimation plays an important role in monitoring the states of IPGS. Considering the different time constants of the IPGS and privacy issues, this paper proposes a distributed real-time state estimation (D-RTSE) method of IPGS based on a cubature Kalman filter (CKF). First, a difference-based model is established for the gas system to depict its slow dynamic characteristics. Subsequently, an RTSE method based on CKF is developed for the IPGS to deal with the system nonlinearity while integrating both the historical and present measurement information. Then, a distributed scheme is designed for the RTSE of the IPGS to enhance computational efficiency and address privacy issues. The 13-bus power system and the 7-node gas system are integrated as the test system. Test results show that the proposed D-RTSE method can efficiently estimate the accurate states of IPGS. © 2022 IET Conference Proceedings. All rights reserved.

关键词： State estimation

来源：评论

学校读者我要写书评

暂无评论

An IGDT-based a low-carbon dispatch strategy of urban integrated energy system considering intermittent features of renewable energy

引用

ENERGY REPORTS 2023年 10卷 4390-4401页

作者： Peng, Bo Kong, Xiangshun Tian, Chongyi Zhang, Feng Ma, Xin Shandong Jianzhu Univ Sch Informat & Elect Engn 1000 Fengming Rd Jinan 250101 Peoples R China Shandong Univ Key Lab Power Syst Intelligent Dispatch & Control Minist Educ 17923 Jingshi Rd Jinan 250061 Peoples R China

The current global energy crisis has prompted a significant rise in the use of low carbon units, making it a crucial research trend in the field of urban energy system, especially in terms of addressing the intermittency of renewable energy generation. This study proposes an integrated energy system planning model (UIES) for urban areas. In addition, to tackle the issue of carbon emissions, a reward and punishment ladder-type carbon transaction model is presented, which aims to control the level of carbon emissions within urban areas. To evaluate the performance of the UIES model, the authors develop an objective function that integrates the sum of equipment operation and maintenance costs, equipment daily acquisition costs, purchased energy costs, carbon trading costs, and integrated demand response (IDR) costs. The stochastic features of renewable energy sources are taken into account in the proposed approach, and an information gap decision theory (IGDT) based strategy is designed to quantify the uncertainty interval and intermittent fluctuations associated with renewable energy. This approach also aims to mitigate any negative effects and variations that may occur during the urban energy system's IDR process. Finally, the simulation tests to demonstrate that the average decrease in operating cost of both models based on IGDT strategy are 7.36 %, and the peak of electrical (EL), heating (HL) and cooling load (CL) are reduced by 20.45 %, 12.38 % and 5.02 % respectively. in conclusion, the energy service providers in urban areas can effectively manage renewable energy fluctuations by independently adjusting the operation sequence of equipment, and the economy and stability of the UIES can be effectively improved by the proposed dispatch strategy.

关键词： Urban integrated energy system Low carbon dispatch IGDT Energy service provider Renewable energy

来源：评论

学校读者我要写书评

暂无评论

Surrogate-Assisted Evolutionary Optimization of the Emergency Load Shedding with Parallel Computation

Surrogate-Assisted Evolutionary Optimization of the Emergenc...

引用

58th IEEE/IAS Industrial and Commercial power systems Technical Conference Asia (IEEE I and CPS Asia)

作者： Gai, Chenhao Li, Changgang Shandong Univ Key Lab Power Syst Intelligent Dispatch & Control Minist Educ Jinan Shandong Peoples R China

ISBN: (数字)9781665450669

ISBN: (纸本)9781665450669

Evolutionary algorithms are widely used for solving the event-driven emergency load shedding (ELS) optimization problem. However, conventional evolutionary ELS optimization methods are inefficient due to the computationally expensive timedomain simulation for evaluating candidate ELS schemes. To improve optimization efficiency, a parallel surrogate-assisted evolutionary algorithm for ELS optimization (PSEALS) is proposed in this paper. In the framework of PSEALS, search operators based on differential evolution are used to generate candidate ELS schemes. The data-driven surrogate model is constructed online to evaluate candidate ELS schemes efficiently. According to evaluation results, elitist ELS schemes are prescreened to direct accurate evolution search. The overall framework of PSEALS is organized with the parallel computation method to accelerate the solving process. The performance of the proposed algorithm is verified through the IEEE 39-bus system.

关键词： Emergency load shedding evolutionary algorithm parallel computation data-driven surrogate model

来源：评论

学校读者我要写书评

暂无评论

Distance Protection Setting Scheme for the Loss of Main Protection in High-Voltage power Grid

Distance Protection Setting Scheme for the Loss of Main Prot...

引用

2023 International Conference on power system Technology, powerCon 2023

作者： Zhang, Yongjie Cong, Wei Tang, Yi Li, Yudun Li, Congcong Wang, Anning Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Jinan China State Grid Shandong Electric Power Company Jinan China State Grid Shandong Electric Power Research Institute Jinan China

ISBN: (纸本)9798350300222

With the continuous construction and development of high-voltage power grids, strategies such as dual redundancy configuration of main protection have been proposed successively to ensure reliable operation of the protection. However, certain abnormal conditions, such as loss of communication power supply, failure of both main protection channels, total station DC power loss (due to fire, etc.), theoretically cannot be completely ruled out in terms of their potential occurrence. According to the power system operation regulations, when the main protection is lost, it is necessary to trip the line, which affects the normal operation of the power grid and disrupts production and daily life. Therefore, a distance protection setting scheme for the loss of main protection in high-voltage power grids has been proposed. When abnormal operating conditions occur, the proposed scheme defines the emergency protection boundary and identifies the protective devices that require protection value modifications. Following the proposed principles, necessary adjustments will be made to the setting values of these protective devices. Using PSCAD/EMTDC to construct a simulation model, the simulation results demonstrate that the proposed distance protection setting scheme in this paper does not require additional protective devices and effectively ensures the safe operation of the power grid under abnormal operating conditions. © 2023 IEEE.

关键词： Electric power system protection

来源：评论

学校读者我要写书评

暂无评论

Research on Frequency Transmission Scheme of Wind Farm in the Scenario of DC Islanding 5

Research on Frequency Transmission Scheme of Wind Farm in th...

引用

2022 5th International Conference on Mechanical, Electrical and Material Application, MEMA 2022

作者： Song, Yu Wu, Shouyuan Wang, Qian Li, Weichao Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Shandong Province Jinan250061 China

With the wide application of new energy technologies, wind power has become one of the technologies with the largest development scale. Voltage Source Converter based High Voltage Direct Current Transmission system has unique advantages in its active and reactive power decoupling control, etc., and has become the main solution to solve the wind power transmission of large-scale wind farms. This paper studies the control characteristics and basic principles of new energy generation in the passive transmission system of DC island power grids, and proposes a frequency signal transmission scheme in the external transmission scenario. The simulation results verify the feasibility of the frequency signal transmission scheme between the sending-end wind farm and the receiving-end power grid in the DC islanding scenario, and that the VSC-HVDC system can quickly provide active power support and improve the dynamic frequency stability of the interconnected system. © 2022 Institute of Physics Publishing. 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

Equivalent Value Evaluation of Wind Coal Based on Multi-Scenario Stochastic Programming

Equivalent Value Evaluation of Wind Coal Based on Multi-Scen...

引用

2023 International Conference on power system Technology, powerCon 2023

作者： Li, Zhi Wang, Yuanyuan Su, Xinyan Ji, Xiangzhen Bao, Guannan Si, Juncheng Zhang, Li State Grid Shandong Electric Power Company Power Dispatching Control Center Jinan China Dongying Power Supply Company State Grid Shandong Electric Power Company Dongying China Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Jinan China

ISBN: (纸本)9798350300222

The diversity of power supply structure increases the diversity of power generation resources, but it also brings the problem of how to correctly understand the value of power supply. In particular, to implement the carbon peaking and carbon neutrality goals, not only the power generation cost but also its carbon reduction effect should be considered in the value of power generation resources. In view of the conversion of wind-coal value, this paper refers to the concept of the water-coal conversion coefficient, proposes the wind-coal value conversion coefficient, and establishes its analysis method, so as to realize the reasonable evaluation of the value of wind power and coal power in new power system dispatching. Based on the analysis of the technical characteristics of wind power generation, the prediction error of wind power was modeled using the scenario generation method, and carbon cost and green certificate revenue were introduced to construct a multi-scenario stochastic planning and scheduling model with the minimum total cost of electricity purchase. The model was solved based on the KKT condition, and the explicit expression of the wind-coal value conversion coefficient was derived by the Lagrange multiplier. Finally, a 4-unit system is taken as an example to verify that the proposed wind-coal value conversion coefficient can realize the equivalent value evaluation of wind coal, and the influence of the inequality constraint reaching the limit on the wind-coal value conversion coefficient is further discussed. © 2023 IEEE.

关键词： Coal

来源：评论

学校读者我要写书评

暂无评论

Multi-stage Dynamic Post-disaster Recovery Strategy for Distribution Networks Considering Integrated Energy and Transportation Networks

引用

CSEE Journal of power and Energy systems 2021年第2期7卷 408-420页

作者： Xinyi Jiang Jian Chen Ming Chen Zhen Wei Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong UniversityJinan 250061China State Grid Qingdao Power Supply Company Qingdao 266002China

To improve the resilience of distribution networks(DNs),a multi-stage dynamic recovery strategy is proposed in this paper,which is designed for post-disaster DN considering an integrated energy system(IES)and transportation network(TN).First,the emergency response quickly increases the output of gas turbines(GTs)in the natural gas network(NGN),and responsively reconfigures the DN in microgrids,to maximize the amount of loads to be *** single-commodity flow model is adopted to construct spanning tree ***,in the second stage of energy storage recovery,mobile energy storage systems(MESSs)are deployed to cover the shortages of power demands,i.e.,to further restore the loads after evaluating the load recovery *** Floyd algorithm based dynamic traffic assignment(DTA)is selected to obtain the optimal path of the *** the third stage,the outputs of various post-disaster recovery measures are adjusted to achieve an economically optimized *** studies demonstrate the effectiveness of the proposed dynamic post-disaster recovery strategy.

关键词： Dynamic post-disaster recovery dynamic transportation network integrated energy system resilience distribution

来源：评论

学校读者我要写书评

暂无评论

Chance-constrained optimal sizing of BESS with emergency load shedding for frequency stability

引用

APPLIED ENERGY 2024年 367卷

作者： Cao, Yongji Wu, Qiuwei Li, Changgang Jiao, Wenshu Tan, Jin Shandong Univ Acad Intelligent Innovat Jinan 250101 Peoples R China Tsinghua Univ Tsinghua Berkeley Shenzhen Inst Tsinghua Shenzhen Int Grad Sch Shenzhen 518055 Peoples R China Shandong Univ Key Lab Power Syst Intelligent Dispatch & Control Minist Educ Jinan 250061 Peoples R China Shanghai Univ Elect Power Coll Elect Engn Shanghai 200090 Peoples R China

The integration of renewable energy sources may result in more severe active power disturbances, and requires more load shedding. The battery energy storage system (BESS) characterized with high flexibility can handle such uncertain disturbances and reduce load shedding amount. This paper proposes a chance -constrained optimal sizing scheme of the BESS to coordinate with the synchronous generator and emergency load shedding (ELS) for frequency stability. First, considering the role of the synchronous generator, BESS, and ELS in frequency stability control, an extended system frequency response model is established to calculate the amount of load shedding, and the required capability of frequency regulation. Then, a multi -objective and chanceconstrained mixed integer nonlinear programming (MINLP) model is built for the BESS sizing to minimize investment cost and maximize operation profits, which considers the uncertainties of disturbances. With the utilization of the linear weighted method, max-affine function -based piecewise linearization method and Bernstein approximation, the model is reformulated into a tractable form, which is iteratively solved by the multi -cut Benders decomposition. Case studies were carried out to verify the effectiveness of the proposed scheme, showing superior performance in reducing load shedding amount and improving frequency nadir.

关键词： Battery energy storage system Chance-constrained programming Emergency load shedding Frequency stability

来源：评论

学校读者我要写书评

暂无评论

Carbon Cost Pass-Through Analysis Considering Green Certificate Trading 8

Carbon Cost Pass-Through Analysis Considering Green Certific...

引用

8th Asia Conference on power and Electrical Engineering, ACPEE 2023

作者： Zhou, Lei Zhang, Guoqiang Liu, Hanghang Wang, Yuanyuan Su, Xinyan Lv, Fenglei State Grid Shandong Electric Power Company Power Dispatching Control Center Jinan China State Grid Shandong Electric Power Company Dongying Power Supply Company Dongying China Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Jinan China

ISBN: (纸本)9798350345520

The optimal allocation of resources through the synergy of the electricity market, carbon emission market, and green certificate market is the necessary way for the development of the new power system with a high proportion of renewable energy. The impact of the carbon market on the electricity market is reflected by the carbon cost pass-through analysis. However, the mechanism of the green certificate market on carbon cost pass-through has not received due attention. In view of this situation, based on the establishment of the carbon cost pass-through analysis method, this paper further analyzes the coupling impact of green certificate trading and carbon emission trading. The energy-reserve joint optimization market trading model considering the equivalence relationship between green certificate trading and carbon emission trading was constructed, and the carbon cost pass-through rate was obtained based on weighted market simulation results. The effectiveness of the proposed method is verified by the simulation of a 10-unit system, and the influence of the price of green certificates on the cost pass-through rate is analyzed. © 2023 IEEE.

关键词： power markets

来源：评论

学校读者我要写书评

暂无评论

EV Charging Load Forecasting Method Considering Time-of-Use Price and Meteorological Factors 7

EV Charging Load Forecasting Method Considering Time-of-Use ...

引用

7th International Conference on power and Energy Applications, ICPEA 2024

作者： Li, Guangxiao Yang, Yilu Wang, Chunyi Xu, Ziyu Wang, Yue Liu, Yutian State Grid Jining Power Supply Company Development Planning Department Jining China State Grid Shandong Electric Power Company Development Planning Department Jinan China Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education Shandong University Jinan China

ISBN: (纸本)9798350356113

The randomness of load fluctuations at electric vehicle (EV) charging stations presents a significant challenge for the accurate load forecasting. Considering time-of-use (TOU) price and meteorological factors, EV charging load forecasting method for EV charging station is proposed. First, the factors affecting charging load are analyzed using the Pearson correlation coefficient and the maximum information coefficient (MIC). key factors such as TOU price, temperature, weekday type, and recent historical load data are determined. Next, convolutional neural network (CNN) is used to extract important features and capture complex nonlinear relationships from key factors. Finally, the extracted features are processed by gated recurrent unit (GRU) network to forecast charging load at different time scales. Case study is conducted using load data from EV charging station with a capacity of 1800 kW. The results demonstrate that the CNN-GRU model significantly improves forecasting accuracy at 4h, 24h, 72h, and 168h forecasting lengths compared to other models. © 2024 IEEE.

关键词： Charging stations

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：