2021 International Conference on Power System Technology (POWERCON)最新文献_第5页

Short-term Wind Power Forecast based on Teleconnected NWP Information 基于远程互联NWP信息的短期风电预测

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697861

Jiaming Li, Ying Qiao, Zhifeng Liang, Zongxiang Lu

引用次数: 2

Design and Application of Power Grid Security Risk Assessment and Hierarchical Control System in Natural Disasters 自然灾害下电网安全风险评估与分级控制系统的设计与应用

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697865

Kang Chang, Chen Yu, Shaofeng Liu, Yan Huang, Wei Li

引用次数: 0

Analysis of transient frequency voltage coupling characteristics for power systems with a high share of wind power 风电占比高的电力系统暂态频率电压耦合特性分析

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697586

Cheng Yong, Xueping Pan, Wei Liang, Haidong Chen, Wei Li, Ling Zhu

{"title":"Analysis of transient frequency voltage coupling characteristics for power systems with a high share of wind power","authors":"Cheng Yong, Xueping Pan, Wei Liang, Haidong Chen, Wei Li, Ling Zhu","doi":"10.1109/POWERCON53785.2021.9697586","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697586","url":null,"abstract":"Presently, with the continuous integration of wind power, power system transient stability characteristics have changed significantly. The enhanced coupling between voltage and frequency increases the risk of system cascading faults. In this paper, the power-voltage characteristics of wind turbine generator (WTG) during low voltage ride through (LVRT) are analyzed firstly, and the frequency-voltage interaction in power systems with a high share of wind power is analyzed from aspects of frequency responses and voltage responses, respectively. Secondly, taking a simple receiving power grid as an example, the possible low-frequency low-voltage (LFLV) or low-frequency high-voltage (LFHV) problem may occur when there is a fault on the AC or DC transmission line, and it is pointed out that increase of wind power share will further worsen the LFLV or LFHV problems. Finally, the influence of wind power share on system frequency and voltage interaction is simulated on the simple receiving system, and also the Chinese central Tibet power grid with a high share of photovoltaic generation, to show the risks of LFLV and LFHV problems.","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":"114575424","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

Initialization of DFIG Wind Turbine for Electromagnetic Transients Simulation DFIG风力机电磁瞬变仿真初始化

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697688

Mu Shixia, Wan Hongfu, Liu Tao, Li Xia, Dai Hanyang, Xiao Xiong

{"title":"Initialization of DFIG Wind Turbine for Electromagnetic Transients Simulation","authors":"Mu Shixia, Wan Hongfu, Liu Tao, Li Xia, Dai Hanyang, Xiao Xiong","doi":"10.1109/POWERCON53785.2021.9697688","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697688","url":null,"abstract":"Because of a large number of power electronics and control equipment in power grid, the zero-state initialization for the electromagnetic transient simulation takes a lot of simulation time, and even cause the simulation start-up failure. In order to solve the initialization problem of electromagnetic transient simulation of doubly fed induction generator (DFIG) wind turbine, an initialization calculation method based on power flow and control parameters was proposed in this paper. Based on the induction generator steady-state circuit and the relationship between the modulation voltage of the control system and the AC/DC voltage of the converter, the electrical components and control system were initialized separately in a modular way. The flat start-up of electromagnetic transient simulation of DFIG wind turbine was realized. It solved a series of initialization problems of traditional electromagnetic transient simulation software, such as long simulation start-up time, manual intervention and even start-up failure. Finally, the electromagnetic transient simulation program is developed in C ++ language and compared with the PSCAD/EMTDC simulation. The effectiveness and correctness of the proposed initialization method are proved.","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":"114817335","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

Total Transfer Capacity Calculation with Large Scale Wind Power Considering Power Curtailment 考虑弃风的大规模风电总输送容量计算

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697543

Xiaozhe Song, Fushou Sun, P. Gao, Xin Liu, Xiaojing Li, Jiaqi Li

引用次数: 0

Calculation of Mixed Electric Field on the Body Surface of Live Workers on UHV AC/DC Transmission Lines in the Same Corridor 同一走廊特高压交直流输电线路现场作业人员体表混合电场计算

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/powercon53785.2021.9697755

A. Ma, Yongxiang Bi, Xintao Chen, Jie Wang

引用次数: 0

A Method Of Active Power Random Allocation For Power Grid Stability Analysis 电网稳定性分析中的有功随机分配方法

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697535

Zhaohui Qie, Zhaowei Li, Wei Li, Jian Gao, Qu Shi

{"title":"A Method Of Active Power Random Allocation For Power Grid Stability Analysis","authors":"Zhaohui Qie, Zhaowei Li, Wei Li, Jian Gao, Qu Shi","doi":"10.1109/POWERCON53785.2021.9697535","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697535","url":null,"abstract":"With the gradual development of artificial intelligence technology in the field of power grid simulation and analysis, in order to overcome the problems of weak typicality of online samples and slow production speed of offline samples, it is necessary to study the automatic sample generation technology. If the unit output is completely random and the data is generated according to the constraint screening method, the screening efficiency is low under the constraint of the total active power sum equation, and the unit output probability density can not be controlled, so it is easy to over fit or under fit. In engineering, two steps are given to realize the generation of active power scheme and the allocation of active power. The allocation scheme satisfying the constraints of total active power and security inequality is generated. Through the mechanism of random allocation of active power and random rotation of units, the distribution of active power of units is ensured to be average. In the active power distribution of multiple units, the effectiveness of the proposed method and the necessity of random rotation of units are proved by the spatial distribution of unit output.","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":"123689821","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 Variable Speed Pumped Storage to Improve the Stable Operation Capability of Combined System 提高联合系统稳定运行能力的变速抽水蓄能研究

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697715

Junjie Sun, Shichuan Feng, Jianyuan Xu, Xinwei Li, Peng Yuan, Xiaoheng Zhang

引用次数: 0

Deviation Reduction of On-line and Off-line Computational Results of Short Circuit Ratio for Multiple Renewable Power Sources 多可再生电源短路比在线与离线计算结果的偏差减小

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697464

X. Chen, Yazhou Luo, Lei Zhang, Weitao Zhang, Shujun Wang, Shitong Li

{"title":"Deviation Reduction of On-line and Off-line Computational Results of Short Circuit Ratio for Multiple Renewable Power Sources","authors":"X. Chen, Yazhou Luo, Lei Zhang, Weitao Zhang, Shujun Wang, Shitong Li","doi":"10.1109/POWERCON53785.2021.9697464","DOIUrl":"https://doi.org/10.1109/POWERCON53785.2021.9697464","url":null,"abstract":"This paper examines the numerical characteristics of short circuit ratio for multiple renewable power sources (MRSCR) and reveals the causes of deviation between on-line and off-line computational results of MRSCR. It is found that model and parameter inconformity of on-line and off-line computational programs is the main factor leading to the deviation. In addition, difference of steady-state voltage of point of common coupling (PCC) of renewable power sources (RESs) also contributes to the deviation, yet the deviation is reasonable and can be compensated. On-line computational results of MRSCR are based on real-time power flow conditions and thus help improve the capability of power systems to accept renewable power. However, currently only off-line computational results are generally acknowledged as the certified reference in power system dispatching. Therefore, it is required that the deviation between on-line and off-line computational results has to be controlled to an acceptable level before on-line computation is officially put into service. In this paper, through model and parameter modification, the deviation of MRSCR in Ximeng Region between on-line and off-line computational program is reduced to a reasonable and acceptable level, effectively proving the reliability of on-line computational results and thus paving the way for the application of on-line computation of MRSCR in power system dispatching.","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":"122067520","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

Short-term Load Forecasting Based on Multi-model Fusion of CNN-LSTM-LGBM 基于CNN-LSTM-LGBM多模型融合的短期负荷预测

2021 International Conference on Power System Technology (POWERCON) Pub Date : 2021-12-08 DOI: 10.1109/POWERCON53785.2021.9697619

Wei-dong Qian, Chunlei Gu, Chongxi Zhu, Zi-bin Jiang, Baohui Han, Miao Yu

引用次数: 3