2021 International Conference on Power System Technology (POWERCON)最新文献

Network-Based Spectral Analysis of Power Systems with Renewable Energy Penetration 基于网络的可再生能源渗透电力系统频谱分析

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697734

W. Hao, Qian Zhang, Xueyi Wang, D. Gan

引用次数: 0

Optimal Power Flow Algorithm for Large-scale Integrated Transmission and Distribution Networks 大型综合输配电网络的最优潮流算法

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697590

Xiang Ma, Zhenhua Li, Jianye Cui, Leiyan Lv, Yifeng Chen

引用次数: 1

Traveling Wave Fault Location Method for DC Line Based on Wavelet Reconstruction Algorithm 基于小波重构算法的直流线路行波故障定位方法

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697891

Zonghan Li, Maohai Wang, Peng Zi, Huan Xie, Tianxiao Huang, Wenqing Lu

{"title":"Traveling Wave Fault Location Method for DC Line Based on Wavelet Reconstruction Algorithm","authors":"Zonghan Li, Maohai Wang, Peng Zi, Huan Xie, Tianxiao Huang, Wenqing Lu","doi":"10.1109/POWERCON53785.2021.9697891","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697891","url":null,"abstract":"Aiming at the technical difficulties such as strong volatility of renewable energy, consumption capacity to be improved and fragile transmission channel, flexible DC power grid is proposed. It realizes the flexible dispatching operation of renewable energy and improves its consumption capacity in the form of multi terminal DC interconnection. The development of DC system fault is faster than that of AC system. In order to identify the fault location and eliminate the fault after the fault occurs, the fault location technology of flexible DC transmission line has become a hot research direction. Aiming at the characteristic that the electrical distance of flexible DC line is less than that of equal length AC line, a DC fault location method based on traveling wave location technology is proposed in this paper; Aiming at the difficulty of traveling wave detection caused by medium and high harmonics, a traveling wave head identification method based on wavelet reconstruction algorithm is proposed in this paper. Through the example verification, the method proposed in this paper can be applied to the fault detection of various DC lines, can accurately locate the fault, is conducive to improve the sensitivity and reliability of DC system fault detection, and is of great significance to enhance the strength of DC system.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125036864","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

Coordinated Operation of PV and Cascaded Hydropower Considering the Power Grid Security Constraints 考虑电网安全约束的光伏与级联水电协同运行

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697527

Yongcan Wang, Peng Shi, Zhuolin Zeng, Xin Li, Bo Zhou

引用次数: 0

Adaptability Study on Out-of-Step Separation Devices of Complex Multiinfeed AC/ DC Power Systems 复杂多馈交/直流系统失步分离装置的适应性研究

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697512

Yong Chen, Dongxu Chang, Yihua Zhu, Yukun Zhu, Hengdao Guo, Shen-guang Li

{"title":"Adaptability Study on Out-of-Step Separation Devices of Complex Multiinfeed AC/ DC Power Systems","authors":"Yong Chen, Dongxu Chang, Yihua Zhu, Yukun Zhu, Hengdao Guo, Shen-guang Li","doi":"10.1109/POWERCON53785.2021.9697512","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697512","url":null,"abstract":"The power flow distribution of the GuangxiGuangdong AC transmission section (GX-GD section) has changed greatly as Kunliulong and Lugaozhao three-terminal HVDC projects have been put into operation, and it is necessary to study on the adaptability of out-of-step separation devices. Based on the real primary system, an equivalent system model is proposed in this paper which can accurately locate the oscillation center and calculate the minimum voltage at the measuring point. Dynamic real-time simulation is carried out for various types and different principles of out-of-step separation devices. Typical problems such as unreliable out-of-step locking criterion in the fault process and device refusing to move when the oscillation center is located at the device installation point are found and solved At the same time, based on the power grid panoramic simulation test technology and the actual configuration of out-of-step separation devices, the problems in the coordination of out-of-step devices near the GX-GD section are comprehensively studied, and the suggestions of putting the wide area out-of-step separation system into operation as soon as possible are put forward. The improvement and optimization measures proposed in this paper have been applied in the real system.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125115635","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

Ultra-short-term Distributed Photovoltaic Power Forecasting Based on Cloud Image Feature Extraction 基于云图像特征提取的分布式光伏超短期功率预测

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697462

Zhihua Wang, Dihan Pan, F. Gao, Huan Zhou, Lianxin Dong, G. He

{"title":"Ultra-short-term Distributed Photovoltaic Power Forecasting Based on Cloud Image Feature Extraction","authors":"Zhihua Wang, Dihan Pan, F. Gao, Huan Zhou, Lianxin Dong, G. He","doi":"10.1109/POWERCON53785.2021.9697462","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697462","url":null,"abstract":"Distributed renewable resources have the characteristics of scattered geographical location, different scale and violent power fluctuation. In order to make full use of the potential of distributed renewable resources, high requirements are put forward for prediction methods. This paper proposes a forecasting method for distributed photovoltaic power prediction. Firstly, this paper establishes a fixed square window with the sun as the center, processes the cloud information and creates an image with only the relationship between the gray and the position of cloud. Secondly, according to the historical data, the position and grayscale picture of the cloud cluster at the next moment are generated. In the third step, proposes the influence factor of cloud cluster to evaluate the influence of the cloud distribution and thickness on the surface illumination, then input it into the improved CNN network as an auxiliary parameter, combined with the current outer atmospheric tangent plane solar radiation to get the predicted illumination at the next time. Finally, outputs the predicted photovoltaic power value, which combine the predicted illumination, current real-time temperature with the efficiency of the inverter. The case study demonstrates that this method has strong adaptability and it is capable of forecasting ultra-short-term changes in photovoltaic power. The method can greatly reduce the amount of data to the prediction network and also accelerate the convergence speed while ensuring the predict accuracy.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125873777","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

A Negative Parallel Virtual RLC Damper for LC-filtered Constant Power Load in DC Microgrid 直流微电网lc滤波恒负荷负并联虚拟RLC阻尼器

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697472

Rujing Zhang, Jintao Lei, Xin Xiang, Wuhua Li, Xiangning He, R. Zhao

引用次数: 0

Peak shaving market mechanism of captive power plants considering energy consumption characteristics of enterprises 考虑企业能耗特点的自备电厂调峰市场机制

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/powercon53785.2021.9697640

Hanghang Liu, Daning You, Yanbin Cai, Guoqiang Zhang, Hao Wang, Li Zhang

引用次数: 0

Optimized Economic Dispatching Approach for PEM Electrolyzer Cell Combined with Coal-fired Power Units to Participate in Frequency Regulation Service PEM电解槽与燃煤机组联合参与调频服务的优化经济调度方法

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697483

Pengfei Zhang, Shunchao Wang, Xiaosong Fang, Zhao He, Ruiqing Zhang, Tuo Zhou, H. Ye, Ning Zhang

{"title":"Optimized Economic Dispatching Approach for PEM Electrolyzer Cell Combined with Coal-fired Power Units to Participate in Frequency Regulation Service","authors":"Pengfei Zhang, Shunchao Wang, Xiaosong Fang, Zhao He, Ruiqing Zhang, Tuo Zhou, H. Ye, Ning Zhang","doi":"10.1109/POWERCON53785.2021.9697483","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697483","url":null,"abstract":"By coupling flexible energy facilities such as the PEM electrolyzer cell with coal-fired power units, the flexibility of the coal-fired power platform can be significantly improved, which is the key solution for the challenges of system frequency regulation caused by the high penetration of renewable energy in power system. In order to dispatch resources properly and improve the flexibility of power system while ensuring the optimal economy, this paper proposes an optimized economic dispatching approach for PEM electrolyzer cell combined with coal-fired power units to participate in frequency regulation service. First, we analyze the revenue of frequency regulation auxiliary service and establish the revenue model. Then, the frequency regulation characteristics of PEM electrolyzer cell and coal-fired power units are elaborated and compared. For dispatching single frequency regulation signal properly, we take the economy as the optimized objective and consider constraints related to the units ramping rate, capacity and signal amplitude, etc., and proposed an optimized economic dispatching approach for the PEM electrolyzer cell combined with a coal-fired power units in a single frequency regulation. When the frequency regulation service stress high requirements for the response time, the economic dispatching table of the integration system under the single regulation signal can be formulated before by the proposed approach before service. A calculation case is carried out, and the results show that the proper dispatching frequency regulation signal among different units by the proposed approach can improve the flexibility of units in frequency regulation while ensuring the optimal economy, which provide a reference for coupling operation between flexible energy facilities and coal-fired power units.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122576544","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

Harmonic Analysis of a DC/AC Hybrid Grid Using Resonance Modal Analysis 基于共振模态分析的直流/交流混合电网谐波分析

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697826

Cheng Kun

引用次数: 1