2011 International Conference on Advanced Power System Automation and Protection最新文献_第6页

Protection relay stability study for 115kV and 34.5kV transmission and distribution system 115kV和34.5kV输配电系统保护继电稳定性研究

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180533

Sin-Jo Jung, I. Kang

{"title":"Protection relay stability study for 115kV and 34.5kV transmission and distribution system","authors":"Sin-Jo Jung, I. Kang","doi":"10.1109/APAP.2011.6180533","DOIUrl":"https://doi.org/10.1109/APAP.2011.6180533","url":null,"abstract":"Some clients request the stability study of a protection system in designing power system to evaluate whether protection relays properly operate in case of an internal fault and if they do not function in the events of severe external fault. High fault currents could cause Current Transformers (CTs) to be saturated. A critical concern is the performance of fast protective relay (instantaneous or differential elements) during severe saturation of CTs. Time domain transient simulation software is widely used for the study of these types of works. In this paper, a relay stability study of 115 kV and 34.5 kV transmission and distribution systems was carried out and evaluated utilizing the PSCAD software, which provides several modeling methodologies for various electrical equipment such as transmission line, power transformer, current transformer and protective relays. For the purpose of this study, the modeling method of CT is the most important factor because it influences heavily on the protection relay operation. It is very important to model CT as close as the real characteristics of the CT. Two types of CT models provided by the PSCAD were discussed and compared with each other and an appropriate CT modeling methods were covered in this study. This study is mainly based on digital relays, which prevail recently in the relay market. Digital relay characteristics like anti-aliasing filter, digital filter and various setting function are embedded into PSCAD.","PeriodicalId":435652,"journal":{"name":"2011 International Conference on Advanced Power System Automation and Protection","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125590419","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

The analysis and corrective measures of common problems of 10 kV capacitor bank in substation 变电站10kv电容器组常见问题分析及纠正措施

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180835

JingBin Lian, Huaizhu Li, KangQun Song

引用次数: 5

A new Improvement Strategy based on hysteresis space vector control of Grid-connected inverter 一种基于滞后空间矢量控制的并网逆变器改进策略

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180755

Xiaoju Chen, Hang Zhang, Jian Zhao

引用次数: 9

A design of Database Configurator for IEC 61850 client 面向iec61850客户端的数据库配置器设计

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180486

YongHwan Jo, Taewan Kim, Myeon-Song Choi, Seungjae Lee

引用次数: 2

Research on technical framework of smart distribution network 智能配电网技术框架研究

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180528

Jianfang Li, Xiaoli Meng, Xiaohui Song

引用次数: 2

Investigation of multi-inverter distributed generation resident Sandia frequency shift anti-islanding method 多逆变器分布式发电驻地桑迪亚移频防孤岛方法研究

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180726

Wen-bin Han, T. Zheng, Xiaoyu Wang

{"title":"Investigation of multi-inverter distributed generation resident Sandia frequency shift anti-islanding method","authors":"Wen-bin Han, T. Zheng, Xiaoyu Wang","doi":"10.1109/APAP.2011.6180726","DOIUrl":"https://doi.org/10.1109/APAP.2011.6180726","url":null,"abstract":"With the popularity of the distributed generation (DG), grid-connected inverters are increasingly employed for the renewable energy sources utilization. The inverter is an interface between the power system and the micro-grid, and it is equipped with a variety of inverter control strategies and islanding detection scheme. Islanding detection function is an integrant function for grid-connected inverters. The current studies focus on single-inverter system, while the islanding detection strategies in multi-inverters operation are investigated in this paper. From the perspective of multi-inverter systems, this paper investigates the influence of the positive feedback anti-islanding on the stability. First, the analytical model of multi-inverter systems equipped with the positive feedback anti-islanding scheme is set up in the simulation environment of Matlab/Simulink. Second, the scheme's impact on the multi-inverter systems is conducted to obtain the nature and characteristics, and the interactions among multi DGs caused by the scheme are presented in the paper. Third, based on the electromagnetic transient simulations, the above impacts and interactions are verified further. Finally, the conclusions are given out based on the analysis results.","PeriodicalId":435652,"journal":{"name":"2011 International Conference on Advanced Power System Automation and Protection","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132339294","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: 8

Research on static voltage stability based on EV charging station load modeling 基于电动汽车充电站负荷建模的静态电压稳定性研究

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180969

Man Zhang, Jinghong Zheng, Wenzhuo Wang, Mengting Dai

引用次数: 3

A real time PMU data and neural network approach to analyze voltage stability 一种实时PMU数据和神经网络分析电压稳定性的方法

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180572

H. Innah, T. Hiyama

{"title":"A real time PMU data and neural network approach to analyze voltage stability","authors":"H. Innah, T. Hiyama","doi":"10.1109/APAP.2011.6180572","DOIUrl":"https://doi.org/10.1109/APAP.2011.6180572","url":null,"abstract":"This paper proposes a Voltage Stability assessment of Power System in real time operation using Radial Basis Function Neural Network (RBF NN). One of the methods which widely used for assessing Voltage Stability is Index Stability (L-index). The indicator obtained from fundamental Kirchhoff Law which is simple in numerical calculation for steady state flow analysis. Input parameters for index calculation taken from real time measurement in the system which provides faster Recently, Phasor Measurement Units (PMUs) is a advanced method to get the information of system parameter in the wide operation with high rate data. Due to the uneconomical reason and unnecessary to place one bus for one PMU, therefore optimization placement has been applied. However, the selection of PMUs locations can be seen as a reduction of input parameters, which require for index stability calculation. To solve the lack of input parameter problem, a trained data of RBF NN has used to predict index stability. This study using 14 bus IEEE system to test the propose method and the result presents the performance of the network is sufficient to predict the index stability.","PeriodicalId":435652,"journal":{"name":"2011 International Conference on Advanced Power System Automation and Protection","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132971137","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: 9

Comparative analysis on critical clearing time of power system connected with large wind farm 大型风电场并网电力系统临界清净时间的比较分析

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180391

Zhiwei Wen, Shi-en He

{"title":"Comparative analysis on critical clearing time of power system connected with large wind farm","authors":"Zhiwei Wen, Shi-en He","doi":"10.1109/APAP.2011.6180391","DOIUrl":"https://doi.org/10.1109/APAP.2011.6180391","url":null,"abstract":"The analysis of transient stability of power system connected with large wind farm is an important issue in the planning and operation of wind farm because the reactive power variation and the real power variation of wind farm interconnected with power grid leads to voltage fluctuation and frequency fluctuation of power grid. Impact of large scale wind farm integration on electric power system, effect on electric power system produced by development of wind power in a local grid typically in China has been represented. Based on electromagnetic transient software DIgSILENT/PowerFactory, the interconnected wind farm model and VSC-HVDC model as well as HVAC and HVDC model are set up. Comparative analysis of post-fault transient performance of wind turbines with different type of tie-line has been proposed. As a character of transient stability of power system, critical clearing time of three-phase short-circuit fault is studied in this paper. The digital simulation results show that VSC-HVDC is a better measure to solve the problems of system instability due to large wind farm integration. With VSC-HVDC transmission system, the transient stability of system can be improved better by flexible operation and control. Analysis of this paper should be provided as academic reference for improving design of interconnected wind farm system.","PeriodicalId":435652,"journal":{"name":"2011 International Conference on Advanced Power System Automation and Protection","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129381896","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: 7

Rotor position measurement method for generator power angles 发电机功率角转子位置测量方法

2011 International Conference on Advanced Power System Automation and Protection Pub Date : 2011-10-01 DOI: 10.1109/APAP.2011.6180792

Jie Zhou, Daonong Zhang, Yue-hai Yu, Jingtao Wu, Ji Zhou, T. Bi, Ming Xiong

引用次数: 5