2021 IEEE Sustainable Power and Energy Conference (iSPEC)最新文献

Connections between Different Criteria of Small-signal Stability Analy sis of Power Systems 电力系统小信号稳定性分析不同准则之间的联系

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735895

Chaoyu Wang, S. Bu

{"title":"Connections between Different Criteria of Small-signal Stability Analy sis of Power Systems","authors":"Chaoyu Wang, S. Bu","doi":"10.1109/iSPEC53008.2021.9735895","DOIUrl":"https://doi.org/10.1109/iSPEC53008.2021.9735895","url":null,"abstract":"The small-signal stability analysis is of great significance for the secure operation of power systems. The most widely used tool for small-signal stability analysis is Lyapunov’s first method which requires the detailed modeling of the system and the calculation of eigenvalues. In order to avoid the time-consuming calculation of eigenvalues, some other stability criteria have been proposed such as the Routh’s criteria, root locus, Bode plot and Nyquist plot. And in order to avoid the detailed system modeling which is difficult or even impossible to obtain due to the increasing penetration of renewable energy, the impedance-based analysis method becomes more attractive for the stability assessment since it only requires the out-of-port characteristics of the system. Each of the above-mentioned methods may have a complete theoretical framework, but there are few studies to clearly reveal the connections between the different stability criteria and methods. To this end, this paper firstly conducts a universal investigation of different criteria in small-signal stability analysis, from the conventional eigenvalue-based methods to the recent impedance-based methods. Then, on this basis, their internal connections are analyzed and discussed. Finally, a case study is carried out to further validate all the criteria and their connections.","PeriodicalId":417862,"journal":{"name":"2021 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115125075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on Monitoring Technology of 5G MEC Virtualization Environment 5G MEC虚拟化环境监控技术研究

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/ispec53008.2021.9735904

Xiangqun Wang, Jiaxuan Fei, Wei Huang, Wei Liu

引用次数: 0

Guaranteed Load Prediction for Distribution Network Considering Extreme Disasters 考虑极端灾害的配电网保证负荷预测

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735791

Ziheng Hu, Chang Ye, Shaorong Wang, Changshu Tan, Jie Tian, Yan Li

{"title":"Guaranteed Load Prediction for Distribution Network Considering Extreme Disasters","authors":"Ziheng Hu, Chang Ye, Shaorong Wang, Changshu Tan, Jie Tian, Yan Li","doi":"10.1109/iSPEC53008.2021.9735791","DOIUrl":"https://doi.org/10.1109/iSPEC53008.2021.9735791","url":null,"abstract":"The concept of resilience is always used to describe the ability of the distribution network to withstand disasters. To evaluate the resilience of the distribution network, it is of great practical significance to predict the load level that can ensure power supply after the occurrence of extreme disasters. This paper first defines the concept of guaranteed load level under extreme disasters in the distribution network and uses it as the quantitative resilience index of the distribution network. On this basis, this paper proposes a method of predicting the guaranteed load level of the distribution network under extreme disasters. In the proposed method, after a comprehensive analysis of various factors affecting the guaranteed load level of the distribution network after the typhoon disaster, the random forest method is used to calculate the feature importance degree of various influencing factors. Then the key influencing factors are selected according to the importance of the characteristics. Then, the paper built a random forest regression model for the guaranteed load level of the distribution network under typhoon disaster, and the model parameters were obtained by grid search and cross-validation to get the optimal prediction model. Finally, the proposed method is tested with the distribution network data affected by typhoons at home and abroad, and the prediction results of the other seven regression models are compared and analyzed. The comparative analysis results show that the proposed method has better applicability and higher accuracy and is more consistent with the actual load level of the distribution network after extreme disasters.","PeriodicalId":417862,"journal":{"name":"2021 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115368769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

An Operation Status Correlation Analysis Method of Integrated Electricity-Water System Based on Random Matrix Theory 基于随机矩阵理论的水电一体化系统运行状态关联分析方法

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735676

Hong Tan, Luo Wang, Rong Dai, Xia Zhao

引用次数: 0

Typical Access Scenario and Operation Requirement of High Proportion Distributed Photovoltaic Power in Distribution Network 高比例分布式光伏在配电网中的典型接入场景及运行需求

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735519

Yan Huaidong, Zhang Xu, Shan Jun

{"title":"Typical Access Scenario and Operation Requirement of High Proportion Distributed Photovoltaic Power in Distribution Network","authors":"Yan Huaidong, Zhang Xu, Shan Jun","doi":"10.1109/iSPEC53008.2021.9735519","DOIUrl":"https://doi.org/10.1109/iSPEC53008.2021.9735519","url":null,"abstract":"Due to high proportion distributed power generation and the infeed of multi large capacity HVDC in receiving-end power grid, the issues of frequency stability and voltage stability are increasing. In order to better adapt to the access of high proportion of distributed photovoltaic(PV) generation, this paper proposes the typical access scenarios of high proportion of distributed PV in medium and low voltage distribution network and the operation requirements of distributed PV generation. Firstly, three kinds of typical access scenario are presented in the paper according to the different access voltage level and access capacity, in accordance with existing distributed photovoltaic design standards. The steady-state performance of the proposed typical access scenario in the distribution network is analyzed. On this basis, the output characteristics of distributed photovoltaic are required to meet the requirements of stable operation of distribution network. Simulation results show that the three typical access scenarios proposed in the paper and the steady-state operation requirements of distributed photovoltaic power generation can not only improve the power quality of the grid, but also take into account the safety and stability of the grid.","PeriodicalId":417862,"journal":{"name":"2021 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116766940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Reactive Power Support Strategy of VSC-MTDC for Low AC Voltage Ride Through VSC-MTDC低交流电压穿越无功支持策略

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735763

Xiao-Dong Liu, Zhou Li, Tingquan Zhang, Yi Tang

引用次数: 0

An Overview of Virtual Power Plant Prospects from the Perspective of Optimal Scheduling, Market Bidding and Transient Analysis 从最优调度、市场竞价和暂态分析看虚拟电厂的发展前景

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735631

Yong Zhang, Lingyuan Wang, Haohui Ding, Yongkang Zhu, Qinran Hu, Zhenyu Lv

{"title":"An Overview of Virtual Power Plant Prospects from the Perspective of Optimal Scheduling, Market Bidding and Transient Analysis","authors":"Yong Zhang, Lingyuan Wang, Haohui Ding, Yongkang Zhu, Qinran Hu, Zhenyu Lv","doi":"10.1109/iSPEC53008.2021.9735631","DOIUrl":"https://doi.org/10.1109/iSPEC53008.2021.9735631","url":null,"abstract":"As distributed energy resources have become the main direction of future energy development, Virtual Power Plant, as a new mode of distributed energy resources integration and aggregation, has developed rapidly in recent years. In the first section, this paper summarizes the definition of the virtual power plant. In the second section, according to the uncertain factors of distributed energy output, this paper summarizes the optimal scheduling of virtual power plants, puts forward the existing problems in the scheduling process and prospects. Distributed energy resources should participate in the market after scheduling. Therefore, in the third section, according to the types of transactions, this paper summarizes the bidding strategies of virtual power plants, puts forward the challenges faced by the virtual power plants to participate in different markets and prospects. By analyzing the transient process of the virtual power plants, this paper introduces the virtual synchronous generator technology, which can provide inertia for the power grid. In the fourth section, this paper summarizes the virtual synchronous generator technology, puts forward the application problems of virtual synchronous generator technology in synchronous virtual power plant and prospects.","PeriodicalId":417862,"journal":{"name":"2021 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117128552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Exploring the Test Plan for the Impact of VFTO on Localized Protection Devices VFTO对局部保护装置影响的试验方案探讨

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735586

Ye Xia, Huihai Liu, Jun Zhao, Zhiyang Zou, Xiaoli Zhang, Wei Li

引用次数: 0

Penetration rate-equivalent inertia time constant function identification method of renewable energy power system 可再生能源电力系统渗透率-等效惯性时间常数函数辨识方法

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9770420

Baoyu Zhai, Xing Li, Qi Yang, Wanru Li, Ruizhe Sun, Bingtuan Gao

{"title":"Penetration rate-equivalent inertia time constant function identification method of renewable energy power system","authors":"Baoyu Zhai, Xing Li, Qi Yang, Wanru Li, Ruizhe Sun, Bingtuan Gao","doi":"10.1109/iSPEC53008.2021.9770420","DOIUrl":"https://doi.org/10.1109/iSPEC53008.2021.9770420","url":null,"abstract":"The complexity and nonlinear characteristics of the individual frequency-active power control strategy; the diversity and time-varying nature of control parameters of each photovoltaic power station in the grid-connected photovoltaic cluster will make it difficult to estimate the equivalent inertia of the full power system under high-penetration rate photovoltaic grid-connected operation. At present, the dispatch center of utility is disabled to directly obtain the current system equivalent inertia level under the known photovoltaic penetration rate and the grid-connected control strategy with parameters of each photovoltaic power station in the cluster. Therefore, this paper establishes the static function between system equivalent inertia and photovoltaic penetration rate with its corresponding control parameters based on inertia identification. This function can help the dispatch center directly calculate the current equivalent inertia of the system, which can then be used to assist in accurately arranging the power generation plan of each photovoltaic power station in the cluster in the future.","PeriodicalId":417862,"journal":{"name":"2021 IEEE Sustainable Power and Energy Conference (iSPEC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127435398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Line Protection Scheme for DC Distribution Networks Based on Current Waveform Similarity 基于电流波形相似度的直流配电网线路保护方案

2021 IEEE Sustainable Power and Energy Conference (iSPEC) Pub Date : 2021-12-23 DOI: 10.1109/iSPEC53008.2021.9735750

Xin Zhan, Xiaoyong Cao, Jianwen Liu, Zai-jun Wu, Xingfeng Xie

引用次数: 0