检索结果-内蒙古大学图书馆

2024 IEEE IAS Industrial and Commercial power system Asia, I and CPS Asia 2024

作者： Wang, Chuanqi Yang, Ming Yu, Yixiao Li, Menglin Shan, Shuaijie Zhang, Yuanhe Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Jinan China

ISBN: (纸本)9798350352290

power ramp is one of the stages with the largest error of renewable energy power forecast. The deviation in the forecast of the time and values of the start-end points will lead to a significant forecast error to the whole ramp process. Therefore, accurate power ramp forecast can effectively improve the renewable energy power forecast accuracy. In this paper, SDAE is applied on encoding the meteorological features of the power ramp process. Then, the coded part is then spliced with a classifier and fine-tune, promote the output with clear category identity. Finally, the coding is fed into a bidirectional neural network to forecast the power at the start-end points. In case study, the proposed method in this paper demonstrated an improvement in the accuracy of extreme forecast of start-end points power by 4.94%in comparison to the power forecast based ramp recognition method. © 2024 IEEE.

关键词： Clean energy

来源：评论

学校读者我要写书评

暂无评论

Data-driven Anomaly Detection Method Based on Similarities of Multiple Wind Turbines

引用

Journal of Modern power systems and Clean Energy 2024年第3期12卷 803-818页

作者： Xiangjun Zeng Ming Yang Chen Feng Mingqiang Wang Lingqin Xia the College of Electrical Engineering&New Energy China Three Gorges UniversityYichang 443002China the Key Laboratory of Power System Intelligent Dispatch and Control Shandong UniversityJinan 250061China

The operating conditions of wind turbines(WTs)in the same wind farm(WF)may share similarities due to their shared manufacturing process,control strategy,and operating ***,the similarities of WTs are seldom considered in WT anomaly detection,resulting in the disregard of useful *** paper proposes a method to improve the reliability and accuracy of WT anomaly detection using the supervisory control and data acquisition(SCADA)data of multiple WTs in the same ***,a similarity assessment method based on a comparison of different observation time series is proposed,which objectively quantifies the similarities of WT operating ***,the SCADA data of the target WT and selected WTs that are similar are used to establish several estimation models through a long short-term memory(LSTM)*** models that exhibit good estimation performance are used to construct a combined estimation model that estimates the variations in the monitored variables of the target ***,an anomaly detection method that jointly compares the effective value and information entropy of the residuals is proposed to identify *** effectiveness and accuracy of the proposed method are verified using the data of two actual WFs.

关键词： Anomaly detection information entropy long short-term memory similarity assessment wind farm wind turbines

来源：评论

学校读者我要写书评

暂无评论

Multi-timescale Active Distribution Network Scheduling Considering Demand Response and User Comprehensive Satisfaction

引用

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 2021年第3期57卷 1995-2005页

作者： Sheng, Hongzhang Wang, Chengfu Li, Bowen Liang, Jun Yang, Ming Dong, Yunhui Shandong Univ Sch Elect Engn Minist Educ Key Lab Power Syst Intelligent Dispatch & Control Jinan 250061 Peoples R China

A large number of distributed energy resources (DERs) integrate into the distribution network, which changes the power flow, increases the power fluctuations, and complicates the scheduling of the distribution network. To cope with that, a multitimescale scheduling method, which considers the demand response as well as user satisfaction, is proposed in this paper. First, in the day-ahead stage, both the generation-side and demand-side are combined to minimize the operating costs and reduce the impact of DERs. Second, in the real-time stage, the model predictive control method is introduced, smoothing the power fluctuations and maximizing the consumed renewable energy. Finally, the user comprehensive satisfaction is considered, ensuring the users' benefit and improving the flexibility of users to participate in scheduling while shifting electricity demands. By optimizing the generation-side and demand-side on both day-ahead and real-time timescales, the proposed method can improve the operation status for the distribution network effectively while ensuring the interests of users. Simulation on an improved IEEE-33 bus distribution system verifies the effectiveness of the proposed method.

关键词： Job shop scheduling Load management Distribution networks Real-time systems Renewable energy sources Elasticity Capacitors Active distribution network (ADN) demand response distribution network scheduling model predictive control (MPC) user satisfaction

来源：评论

学校读者我要写书评

暂无评论

Day-Ahead Optimal dispatch for Integrated Energy system Considering power-to-Gas and Dynamic Pipeline Networks

引用

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 2021年第4期57卷 3317-3328页

作者： Zhang, Zhenwei Wang, Chengfu Lv, Huacan Liu, Fengquan Sheng, Hongzhang Yang, Ming Shandong Univ Sch Elect Engn Minist Educ Key Lab Power Syst Intelligent Dispatch & Control Jinan 250061 Peoples R China

A large number of renewable energy resources are integrated into the integrated energy system (IES), which complicates the IES dispatching, especially for accommodating anti-peak-regulation of wind power. To cope with that, a day-ahead IES optimal dispatching method considering power to gas (P2G) units and dynamic pipeline networks is proposed in this article. First, by introducing P2G, an IES structure based on energy hub is established to implement bidirectional flow between power and natural gas systems. Second, the dynamic characteristic of gas pipelines is modeled with energy storage capability, which can improve the flexibility of the natural gas system by regulating the pressure level of pipeline networks. Furthermore, a cooperative dispatching strategy for P2G and pipeline storage capability is presented to catch the flexibility of IES, in which the unbalanced wind power is converted into natural gas and stored in pipeline networks. Finally, case study is verified on the modified IEEE39-NGS20-HS20 and IEEE118-NGS40-HS20 IES systems with different typical wind power scenarios. The proposed cooperative dispatching strategy can effectively increase wind power consumption and reduce operating cost of the whole system without high computation burden.

关键词： Pipelines Cogeneration Resistance heating Natural gas dispatching Wind power generation Energy storage Dynamic pipeline networks energy hub (EH) integrated energy system (IES) optimal operation power to gas (P2G) scenario method

来源：评论

学校读者我要写书评

暂无评论

Harmonic Contribution Evaluation Based on the Distribution-Level PMUs

引用

IEEE TRANSACTIONS ON power DELIVERY 2021年第2期36卷 909-919页

作者： Sun, Yuanyuan Li, Shurong Xu, Qingshen Xie, Xiangmin Jin, Zongshuai Shi, Fang Zhang, Hengxu Shandong Univ Key Lab Power Syst Intelligent Dispatch & Control Minist Educ Sch Elect Engn Jinan 250061 Peoples R China

With the rapid development of renewable energy resources, harmonics in modern distribution systems have become more serious owing to the wide adoption of power electronic devices. Today, distribution-level phasor measurement units (D-PMUs), which can provide synchronized harmonic data with high-time resolution, are being rapidly developed. To utilize the D-PMUs, a hierarchical harmonic contribution (HC) determination method is proposed in this paper for systems with multiple harmonic sources. The HCs were determined using a widely linear complex partial least squares (WL-CPLS) method, which is both accurate and efficient. In an actual power system, the D-PMUs are not fully installed at all buses and the harmonics monitored by each D-PMU are actually the aggregate effects of multiple harmonic sources in the subarea. Based on the above consideration, a hierarchical HC strategy is proposed to locate the main harmonic contributors, layer by layer. The proposed method can be applied to a radial distribution system with any number of D-PMU placements. The methodologies are explained and verified using the IEEE 37-bus system. The real case study results based on the demonstration project are also analyzed in this paper.

关键词： Harmonic analysis power system harmonics Impedance Voltage measurement Synchronization Sun Renewable energy sources D-PMUs harmonic analysis harmonic contribution multiple harmonic sources

来源：评论

学校读者我要写书评

暂无评论

Decentralized Robust Emergency Voltage control of power system With Large-Scale Wind power Integrated via VSC-MTDC

引用

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 2024年第5期60卷 7522-7536页

作者： Chen, Qi Zhao, Qi Zhang, Wen Ye, Hua Shandong Univ Sch Elect Engn Key Lab Power Syst Intelligent Dispatch & Control Minist Educ Jinan 250061 Peoples R China

Continuous displacement of conventional power plants by wind turbines significantly weakens the dynamic reactive power support ability of power grid. To correct nonviable or unstable transmission voltage level and avoid imminent long-term voltage instability, this paper proposes a decentralized robust emergency voltage control strategy of power system with large-scale wind power integrated via voltage source converter based multi-terminal direct current system (VSC-MTDC). Firstly, considering wind power volatility and network structural characteristics, a novel partition approach based on the community detection method is proposed. Secondly, local controllers are assigned in each area to detect any threat of voltage collapse and actuate emergency voltage control based on tube-based model predictive control (MPC). In the proposed emergency voltage control model, by treating the actions of controllers in other zones as disturbances and compensating them using tightened constraints and ancillary controller, it achieves a robust voltage control in the absence of communication among local controllers. Finally, an optimal restoration control of dynamic reactive power is proposed to optimize the dynamic reactive power reserve after the emergency voltage control to ensure the voltage support ability when the disturbance occurs again. Simulation results are shown with a modified IEEE Nordic Test system, which validates the effectiveness and superiority of the newly proposed strategy.

关键词： Voltage control Reactive power Wind power generation power system stability Sensitivity power system dynamics power conversion Emergency voltage control long-term voltage instability MPC network partition VSC-MTDC

来源：评论

学校读者我要写书评

暂无评论

Enhanced Robust Scheduling Approach Considering Dynamic Flexibility Support from District Heating systems

Enhanced Robust Scheduling Approach Considering Dynamic Flex...

引用

2024 IEEE IAS Industrial and Commercial power system Asia, I and CPS Asia 2024

作者： Zheng, Wenzhang Li, Peng Yang, Ming Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Jinan250061 China

ISBN: (纸本)9798350352290

Apart from flexibility resources, e.g., thermal generators and battery energy storage system in electrical power system, dynamic heating networks and flexible heat loads in district heating systems could also provide considerable reserve capacity support for electrical power system. To accurately quantify the reserve support capacity, two operating periods of district heating systems, i.e., reserve capacity support providing period (RCPP) and reserve capacity support recovery period are designed in the paper. A novel dynamic flexibility support interaction mechanism among multiple district heating systems is then presented, and a corresponding scheduling strategy is proposed to coordinate electrical power system and district heating system (DHS), where the concept of allowable regulating capacity exchange interval is introduced to make full use of reserve capacity in DHS. And then, an enhanced robust scheduling model is developed for electrical power systems, where both of the wind power allowable region and operational costs are involved. Case studies demonstrate the proposed method effectively tackles the flexibility coordination between electrical power system and multiple district heating systems. © 2024 IEEE.

关键词： Wind power

来源：评论

学校读者我要写书评

暂无评论

Non-unit transient based boundary protection for UHV transmission lines

引用

INTERNATIONAL JOURNAL OF ELECTRICAL power & ENERGY systemS 2018年 102卷 349-363页

作者： Luo, S. B. Gao, H. L. Wang, D. Zou, G. B. Shandong Univ Minist Educ Key Lab Power Syst Intelligent Dispatch & Control 17923 Jingshi Rd Jinan 250061 Shandong Peoples R China

Different from EHV transmission lines, the boundary of UHV transmission lines naturally consists of busbar stray capacitance, shunt reactor and/or series capacitor. The frequency characteristics of the UHV line boundaries with different structures are analyzed deeply, which have significant attenuation on both high frequency signal and low frequency signal. The attenuation is the inherent characteristic of UHV line boundary. Based on the UHV boundary characteristic, a novel boundary protection principle utilizing backward traveling wave is proposed. The fault direction is identified by means of the time-domain energy of the backward traveling wave. The high frequency energy and the low frequency energy of the backward traveling wave are extracted by wavelet transform, and then the forward internal and external faults are discriminated by the product of high frequency energy and low frequency energy. An adaptive setting calculation method in terms of fault type is presented, which is able to improve effectively the right discriminating rate for internal faults. The simulation model of Jindongnan-Nanyang-Jingmen UHV transmission project is established in ATP/EMTP. The simulation results show that the boundary protection possesses stable performance under various fault situations, and the operation time is less than 2 ms, which is appropriate as the non-unit ultra-high-speed protection element for UHV transmission lines.

关键词： UHV transmission lines Boundary protection Non-unit transient based protection Ultra high speed Backward traveling wave Wavelet transform

来源：评论

学校读者我要写书评

暂无评论

Parameter Optimization for Temporary Primary Frequency control of Wind Turbines Based on Analytical Derivation 4

Parameter Optimization for Temporary Primary Frequency Contr...

引用

2023 4th International Conference on Mechanical Instrumentation and Automation, ICMIA 2023

作者： Wei, Xinyu Jin, Zhaoyang Li, Gengkun Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education Shandong University China

DFIG has the capability to participate in power system frequency modulation through inertial control by returning the energy stored in the rotating mass of the generator that is delivered to the grid. When frequency modulation occurs, the primary frequency drop can lead to a reduction in the rotor kinetic energy stored in the DFIG, which is subsequently used to produce extra active power to sustain the system frequency. However, once the available rotor kinetic energy is released, the output power of the DFIG abruptly drops to restore the rotor speed. To reduce the extent of the secondary frequency deviation caused by the inertial control of DFIGs, this paper applies an analytically derived approach to optimize the parameters of temporary primary frequency control during rotor speed recovery. Specifically, the parameters optimized include termination time and active power Simulation results conducted using DIGSILENT simulation software have demonstrated that the optimized temporary primary frequency control strategy is capable of effectively reducing the secondary frequency drop that may occur when the DFIG is removed from frequency control. Moreover, setting the optimal termination time and controlling the active power output while the rotor speed is being restored are crucial to prevent excessive mechanical wear and fatigue that may be induced by a too-rapid recovery of rotor speed. © Published under licence by IOP Publishing Ltd.

关键词： Kinetic energy

来源：评论

学校读者我要写书评

暂无评论

Enhancing the course teaching of power system analysis with virtual simulation platform

引用

INTERNATIONAL JOURNAL OF ELECTRICAL ENGINEERING EDUCATION 2020年第3期60卷 289-312页

作者： Wei, Mingjie Zhang, Hengxu Fang, Tianyu Shandong Univ Key Lab Power Syst Intelligent Dispatch & Control Minist Educ 17923 Jingshi Rd Jinan 250061 Shandong Peoples R China

power system analysis (PSA) is the first comprehensive curriculum for the major of electrical engineering at the undergraduate stage. It helps students obtain an overview of the power system, and systematically learn about fundamental theories. However, the traditional teaching of PSA course excessively focuses on the class lecture, and is combined with hardware-based experiments that are restricted due to concerns of security and cost. Enhancing the PSA course has been attempted at Shandong University, China, since 2016, which combines class lecture, laboratory exercises, and practical activities into the daily teaching. In laboratory exercises, project-based learning (PBL) is carried out by using the hardware experimental equipment and self-developed teaching software, VTPCE, hence to enhance students' understandings of knowledge, hands-on abilities, and researching skills. Practical activities are organized by visiting the topic-related institutes to establish the relationships between theories and practices. This paper introduces the architecture, the intended learning objects (ILOs), and the detailed arrangement of the reformed PSA course. The assessment procedures for students are also presented, as well as the satisfaction surveys.

关键词： power system analysis undergraduate curriculum virtual teaching platform project-based learning

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：