2018 China International Conference on Electricity Distribution (CICED)最新文献_第8页

Research on Unified Storage Technology of Multidimensional Historical Data of Substation Based On the Combination of Redis and SSDB 基于Redis与SSDB结合的变电站多维历史数据统一存储技术研究

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592231

Ren Hao, Fan Guangmin, Wang Qiang, Guo Lingxu, Chen Jian, Zhang Pan

{"title":"Research on Unified Storage Technology of Multidimensional Historical Data of Substation Based On the Combination of Redis and SSDB","authors":"Ren Hao, Fan Guangmin, Wang Qiang, Guo Lingxu, Chen Jian, Zhang Pan","doi":"10.1109/CICED.2018.8592231","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592231","url":null,"abstract":"At present, there are multiple sets of information systems in substation, which are relatively independent, and exist some problems of repeated collection, low utilization rate and difficult data sharing. These systems contain not only “four remote” structured data, but also unstructured data such as waveform, model and graphics. There is no unified storage and access interface established which hinders the improvement of intelligent level of advanced applications. To solve the above problems, a unified storage technology of multidimensional historical data of substation based on Redis and SSDB is proposed in this paper. The system incldes the Redis proxy server and the SSDB storage cluster. In the proxy server, the SCADA historical data and the unstructured historical data of all substations in a region are stored in the key-value network cache library by the unified import tool supporting multi vendor and multi service history data. Then, through the proxy service program, the cache data is transferred to the distributed storage cluster. For each storage machine of the storage cluster, the cache data is stored in the disk file through the LevelDB storage engine, and the distributed permanent storage of the historical data is realized. The laboratory tests have proved that the functional requirements and performance index of the unified data storage system have reached the expected goal.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129293303","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

Personal Electric Shock Situation Analysis Method for Distribution Network 配电网人员触电情况分析方法

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592377

Z. Ning, Feng Guang, Zhao Zimo, Yu Kun, Yu Mingqi, Zeng Xiangjun

{"title":"Personal Electric Shock Situation Analysis Method for Distribution Network","authors":"Z. Ning, Feng Guang, Zhao Zimo, Yu Kun, Yu Mingqi, Zeng Xiangjun","doi":"10.1109/CICED.2018.8592377","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592377","url":null,"abstract":"Distribution network as a link between the power system and users, the safety and stability of its safe operation determines the reliability of the power supply of the majority of users and the personal safety of the distribution network. The distribution network has a complex structure, frequent ground faults, and frequent personal electric shocks, causing a series of serious consequences. Based on current information, human body impedance and electrophysiological responses, this article analyzes the human safety current. Three types of electric shock scene modeling and simulation were carried out for different distribution network electric shock situations. The corresponding fault currents and the situation in which the human body withstands current and voltage were analyzed. Under different environmental conditions, the relationship between faulty electrical quantity and personal injury level of distribution network under typical scenarios was verified by CDEGS simulation. The results will help to establish the distribution network technical parameters that take into account personal safety, and have a certain significance for future theoretical research and project implementation.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130945948","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

Sishui No.2 Main Transformer Winding Fault Analysis 泗水2号主变压器绕组故障分析

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592508

Yanhai Huang, T. Hai, Chenghao Lan, Jia-sen Zhu, Zhitong Liu, Yanjun Pang

引用次数: 0

Interaction Strategy of User Side Storage Devices for the Day-Ahead Dispatch of Distributed Integrated Energy Systems 分布式综合能源系统日前调度用户侧存储设备交互策略

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592364

Yuxiong Huang, Gengfeng Li, Z. Bie, Jiangfeng Jiang

引用次数: 2

A New Capacity Inspection Method for Distribution Transformer based on Big Data 基于大数据的配电变压器容量检测新方法

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592252

Z.Y. Zheng, Z. Li, S.F. Yu, D. Ke, Z.J. Lao, J.Q. Lin, J.J. Chen

引用次数: 1

Corona Discharge Characteristics for Conductors of HVDC Transmission Lines with Different Heights to Groud 高压直流输电线路不同接地高度导体的电晕放电特性

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI: 10.1109/CICED.2018.8592569

Liang Jinxiang, Jiang Lin, Li Weidong, Pen Lei

{"title":"Corona Discharge Characteristics for Conductors of HVDC Transmission Lines with Different Heights to Groud","authors":"Liang Jinxiang, Jiang Lin, Li Weidong, Pen Lei","doi":"10.1109/CICED.2018.8592569","DOIUrl":"https://doi.org/10.1109/CICED.2018.8592569","url":null,"abstract":"The corona discharge characteristic of the conductor is one of the key factors affecting the electromagnetic environment of the project. In order to obtain corona discharge characteristics of conductors with different heights to ground and correction methods for inception corona voltage of conductors with different heights to ground, corona test were carried out in Ultra-high Voltage Test Base in Wuhan with ultraviolet image apparatus. the corona test of conductors of JL/G1A-1250/100 and JL/G lA-1250/70 at different heights to ground were carried out., one single conductor., 6-bundle conductor with bundle space 500mm and 8-bundle conductor with bundle space 550mm were tested separately. The results show that Under DC positive voltage., the corona inception voltage for conductors increased with the rise of the height to ground., different bundle distances., different bundle conductors and one single conductor corona discharge characteristics have some differences; The corona inception voltage between single conductor and different bundle distances conductors have certain functional relationship. By establishing the functional relationship between them., the corona inception voltage of bundle conductors can be calculated by the corona inception voltage value of a single conductor., the value of correction errors can be controlled at less than 13%.","PeriodicalId":142885,"journal":{"name":"2018 China International Conference on Electricity Distribution (CICED)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126859781","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

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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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