2018 China International Conference on Electricity Distribution (CICED)最新文献_第9页

High impedance fault line selection method for resonant grounding system based on wavelet packet analysis 基于小波包分析的谐振接地系统高阻抗故障选线方法

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592331

Qin Hao, Li Tianyou

{"title":"High impedance fault line selection method for resonant grounding system based on wavelet packet analysis","authors":"Qin Hao, Li Tianyou","doi":"10.1109/CICED.2018.8592331","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592331","url":null,"abstract":"Distribution network resonant grounding system of high resistance grounding fault handling has been a research focus, due to the uncertainty of the weak fault current, fault occurrence time, affected by the circuit parameters and random factors such as reason, has been a lack of reliable high resistance grounding fault line selection method. According to the fault characteristics of single phase high impedance grounding of resonant grounding system, wavelet packet analysis and energy entropy are combined to analyze the transient zero sequence current, set the energy entropy be the transient characteristic of single phase high resistance ground fault, so we can analyze the uncertainty of transient fault quantitatively. Analyzing the law of energy entropy distribution of zero sequence current transient signal, and defining the mean energy entropy is to calculate the complexity of signal energy, then proposing a fault model classification method based on average energy entropy. Single-phase high resistance earth fault can be divided into 2 fault types, and according to the different fault types, using different algorithms for fault line selection, finally use simulation data to prove the correctness and feasibility of the method.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126427872","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: 5

Reactive Planning of Island Power Grid Containing VSC-HVDC 含VSC-HVDC的孤岛电网无功规划

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592519

Yujun Zhong, Cheng Li, Xiaoyu Ding, Mingwei Peng, Shu Li

引用次数: 1

Assessment Method of Wind Farm Harmonic Emission Level Based on Improved Covariance Characteristic of Random Vectors 基于改进随机向量协方差特征的风电场谐波排放水平评估方法

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592238

Zhenxin Zhong, Yue Zheng, Min Xiong

{"title":"Assessment Method of Wind Farm Harmonic Emission Level Based on Improved Covariance Characteristic of Random Vectors","authors":"Zhenxin Zhong, Yue Zheng, Min Xiong","doi":"10.1109/CICED.2018.8592238","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592238","url":null,"abstract":"The wind farm side harmonic impedance could not be neglected when assessing the wind farm harmonic emission level. Because of the low impedance characteristic of the wind turbine filter. This paper presents a new method to estimate the wind farm harmonic emission level at the point of common coupling (pee) based on improved covariance characteristic of random vectors. According to the topological structure of the wind farm, the equivalent harmonic impedance of the wind farm is calculated, with the measured data at pee the wind farm harmonic source is obtained. Since the system side harmonic source and wind farm side harmonic source are approximately independent, the background harmonic related term can be eliminated by using the covariance characteristic, then the system side harmonic impedance can be calculated. We can calculate the wind farm harmonic emission level. The harmonic impedances of wind turbines are aggregated to simplify the calculation of the wind farm side harmonic impedance. Based on the results of simulation and measured data, it verifies that the proposed method is effective to eliminate the background interference when evaluate wind farm harmonic emission level, and the proposed method is also effective when the background harmonic is large.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121574487","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

Economic Analysis of the Charging-Discharging-Storage Integrated Station Based on Demand Response 基于需求响应的充放电蓄一体化电站经济分析

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592119

Liu Liu-hong, He Xing-Rang, Xiong Si, Luo Ling-lin

{"title":"Economic Analysis of the Charging-Discharging-Storage Integrated Station Based on Demand Response","authors":"Liu Liu-hong, He Xing-Rang, Xiong Si, Luo Ling-lin","doi":"10.1109/CICED.2018.8592119","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592119","url":null,"abstract":"The constructions of energy corollary facilities electric vehicle (EV) charging-discharging-storage integrated station is a Platform that integrates the advantages of charging stations, power stations and power storage stations. In the power market, the operating economic benefits of this platform are the core factor of its survival and development. As a service provider for Power Network and electric vehicles (EV), different Operation mode can be taken and meet the requirement of both. The response on the demand side described in this passage is that the grid guides the integrated station to adjust the operation mode by the market price. In opinion of economics, this paper calculates the economic benefit of the integration station under the three modes of operation of frequency modulation, spinning reserve service and Peak-Load Regulation, Comparison and analysis of three groups were carried out. The results showed that the economic benefit of charge-discharge-storage integrated station provided Peak-Load Regulation is the best, and Profit from providing frequency modulation (FM) is greater than Profit from providing spinning reserve service. Integrated station participates in ancillary services in electricity market is a feasibility development direction for providers of electric vehicle service in the future.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122967911","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 of Neural Network Ensemble Forecasting Based on Genetic Algorithm to Optimize the Combination Weights Dynamically 基于遗传算法的组合权值动态优化神经网络集成预测研究

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592340

Wang Le

引用次数: 0

Research of Comprehensive Application of Intelligent Low-Voltage Power Distribution Units in Improving Power Quality 智能低压配电机组在提高电能质量中的综合应用研究

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592208

Liu Chenyi, Xie Lei, Hu Shuilian, Zhous Hengdong, Fan Xiaobo

引用次数: 6

Monthly Unit Commitment for Systems with Wind Power Considering Short-term Scheduling Benefits 考虑短期调度效益的风电系统月机组承诺

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592338

Zhang Na, Ji Xing, Liu Xinglong, Song Zhuoran, Panxiao, D. Xiaoyu, Liu Gang, Meng Xiangyu

{"title":"Monthly Unit Commitment for Systems with Wind Power Considering Short-term Scheduling Benefits","authors":"Zhang Na, Ji Xing, Liu Xinglong, Song Zhuoran, Panxiao, D. Xiaoyu, Liu Gang, Meng Xiangyu","doi":"10.1109/CICED.2018.8592338","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592338","url":null,"abstract":"Wind power penetration in many countries has been increasing rapidly in recent years. Additional energy saving can be obtained by considering wind power with more proper approach in system scheduling and dispatching. Considering wind power output in mid-long term planning coordinated with short-term scheduling can further reduce the fuel consumption by optimizing resource distribution. Wind speed and wind power cannot be predicted more than one week earlier according to the present technology, which means the mid-long term unit commitment considering wind power output much differs from the traditional one and the short-term unit commitment considering wind power. A dynamic clustering idea is presented which determines the commitment plan of some part of conventional units in the mid-long term planning and determines that of the rest units in the short-term planning. It is based on the advantages of the two scheduling periods that mid-long term planning is more conducive to optimize resource distribution and reduce the total start-up costs, whereas short term planning contribute to reduce the load rate and reserve requirement due to the significant reduction in the uncertainty of wind power output. A two-stage monthly unit commitment model considering short term scheduling for systems with wind power integration is developed to minimize the expected monthly total costs. The effective decision variables contain the group of each conventional unit belongs to and the commitment variables of the units belonging to the monthly optimizing group. Simulation results on the revised IEEE-118 bus system verified the proposed method.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114139206","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

An Optimizing Power System Dispatch with An Extra EV Load Using PLEXOS Appoach 基于PLEXOS方法的电动汽车额外负荷下电力系统优化调度

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592362

Zhebin Sun, Chenxu Zhao, Zhihai Yan

{"title":"An Optimizing Power System Dispatch with An Extra EV Load Using PLEXOS Appoach","authors":"Zhebin Sun, Chenxu Zhao, Zhihai Yan","doi":"10.1109/CICED.2018.8592362","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592362","url":null,"abstract":"The vehicles powered by electricity are quickly developed to meet the reduction in greenhouse gas emissions. Although electrical vehicle (EV) dose produce less carbon emissions and the less fossil fuel are consumed compared with traditional vehicles, the electricity should be supplied to EV battery charging where excess emissions would be produced from power generation. In this work, we try to optimize the power dispatch for the extra electronic vehicle loading exemplified by the Ireland's electricity market in 2020 with a commercial PLEXOS software. We have investigated the effects of the EV load on the SEM (Single Electricity Market) with the four different scenarios including peak, off-peak, stochastic, and EPRI, respectively. The simulative model was used to optimize the dispatch of a generation and supply energy for a specified demand load. It was confirmed the EV charging at the peak time presented the highest increasing in the systematic marginal price, generation costs and total C02 emissions. The off-peak charging is more beneficial than other charging modes that would contribute 1.54% renewable energy penetration and supply to the 200% emissions reduction target. The present work may provide a new idea and technological approach for the sectional dispatch of the power grid and optimizing EV load in the future.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114238161","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

Comparison of Virtual and Conventional Synchronous Generators Based on a Modularized Analysis Tool 基于模块化分析工具的虚拟与传统同步发电机的比较

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592294

Jia-Yang Ruan, R. Cai, Xing Huang, Hailian Xie

{"title":"Comparison of Virtual and Conventional Synchronous Generators Based on a Modularized Analysis Tool","authors":"Jia-Yang Ruan, R. Cai, Xing Huang, Hailian Xie","doi":"10.1109/CICED.2018.8592294","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592294","url":null,"abstract":"It is questionable that if virtual and conventional synchronous generators could provide identical dynamic support to the power system. In order to summarize the difference, this paper introduces a MIMO-based analysis tool for modelling power systems integrated by conventional or power-electronic interfaced generators. The scalable tool is used to test modelling accuracy of individual generators using dynamic simulation. For small-signal stability analysis, the tool does linearization based on MIMO models, and then couple all generators/loads though the passive network, with the network transient included. During transient stability analysis, VSG's ability to emulate SG's dynamic responses depends on whether the converter has a strong overloading limit, and the current control loop is tuned fast. In practice this could be hard to realize, considering that the converter's current limit is slightly higher than 1.0, and thus the current controller tends to be easily saturated during voltage sags, and the VSG could enter constant-power mode. During small disturbances, VSG could have a low-frequency inertia response similar to SG, yet it can introduce new oscillation modes, depending on the control parameter configuration. Due to lack of stator-flux transient modelling, the high-frequency oscillation of VSG is evidently deviated from that of SG.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115249247","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

An Overview of Transmission Line Trip Risk Assessment Under Typhoon Disaster 台风灾害下输电线路跳闸风险评估综述

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592064

Jufang Yu, H. Hou, Shiwen Yu, Hao Geng, Yong Huang, Enze Zhou, Tong Wang

{"title":"An Overview of Transmission Line Trip Risk Assessment Under Typhoon Disaster","authors":"Jufang Yu, H. Hou, Shiwen Yu, Hao Geng, Yong Huang, Enze Zhou, Tong Wang","doi":"10.1109/CICED.2018.8592064","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592064","url":null,"abstract":"The power systems in all parts of the world are suffering from the plaguing of the wind disaster, and many coastal cities are suffering from serious typhoons. The trip fault of the power transmission line caused by the typhoon has occurred frequently, so the risk assessment of the transmission line under typhoon disaster is increasingly important. This paper summarizes some typical cases of typhoon around the world, and concludes the main reasons for the trip of transmission lines, including windage yaw, floater, tower damage, broken line, lightning stroke and so on. In view of the reasons of the trip, the Monte Carlo method, fuzzy mathematical model, machine learning algorithm, probability model, regulation method and improved electrical geometry model are introduced. The model and so on are applied to the risk assessment method and model of transmission line trip, and the preventive measures for transmission line failure under typhoon disaster are put forward. By summarizing the relevant literature on the risk assessment of power system at home and abroad, the existing literature on the risk assessment of power system in bad weather is more, but the research on the risk assessment of transmission line trip under typhoon disaster is less. Finally, this paper looks forward the development prospect of the risk assessment of transmission line trip under typhoon disaster.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":"35 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121002184","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: 1