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Enhancing virtual power plant observability with PMUs 利用pmu增强虚拟电厂的可观测性
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617511
M. Powalko, P. Komarnicki, K. Rudion, Z. Styczynski
{"title":"Enhancing virtual power plant observability with PMUs","authors":"M. Powalko, P. Komarnicki, K. Rudion, Z. Styczynski","doi":"10.1109/CRIS.2010.5617511","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617511","url":null,"abstract":"Especially influenced by the rising number of renewable and distributed power generation plants and so-called unbundling, the controllability and protection of power supply systems are becoming ever more complex as these systems are developed further. To securely meet these challenges a reliable observability of the power system is needed. Novel digital measurement equipment such as phasor measurement units (PMU) in transmission and distribution networks and smart meters in low voltage grids deliver the system parameters needed to perform a system state estimation analysis. This paper discusses the use of PMUs to support the operation of virtual power plants (VPP). It additionally presents methods, which have already been tested in different simulations, to optimally select the locations of measurement units to ensure system observability.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129959347","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
Improvement of stability assessment of VSCHVDC transmission systems VSCHVDC输电系统稳定性评估的改进
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617545
M. Nguyen, K. Rudion, Z. Styczynski
{"title":"Improvement of stability assessment of VSCHVDC transmission systems","authors":"M. Nguyen, K. Rudion, Z. Styczynski","doi":"10.1109/CRIS.2010.5617545","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617545","url":null,"abstract":"This paper deals with the aspects of stability assessment for the VSC HVDC transmission systems that are especially relevant for this technology when applied on a large scale. It focuses on the control strategies for the VSC HVDC transmission necessary to reach a full integration of large offshore wind farms into the power system operation while minimizing the critical situations for the power system operation and guaranteeing the required stability level. The main goal of this investigation is to assess the fault ride through (FRT) capabilities of such complex systems. For this purpose different emergency control strategies for VSC HVDC, such as the reduction of power generation by wind turbines using a voltage based information carrier, will be analyzed. The chosen method will be simulated and its results evaluated regarding aspects such as response time and reliability of the control strategy.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116539894","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
The application of the wavelet packet to the study of vibration of transformer under DC magnetic bias 小波包在直流偏磁下变压器振动研究中的应用
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617559
Yu-chun Li, Liangchun Liu
{"title":"The application of the wavelet packet to the study of vibration of transformer under DC magnetic bias","authors":"Yu-chun Li, Liangchun Liu","doi":"10.1109/CRIS.2010.5617559","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617559","url":null,"abstract":"In this paper, via analyzing the characteristic of WPT, a method of obtaining the energy eigenvector of transformer vibration based on wavelet packet transform is brought forward; the eigenvector can be used for determining the relationship between vibration levels and influence degree of DC magnetic bias to power transformers, providing criterion for analyzing the generating reason of transformer vibration and noise. At the lab, using the transformer DC magnetic bias monitoring device, vibration signals of transformer with no-load were tested under DC bias. The vibration signals in different magnetic bias level were analyzed using WPT and the energy eigenvectors were acquired. According to the experiment, we can see this method can evaluate the magnetic bias extent of transformer effectively.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115421138","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: 3
Methodologies for inter-dependency assessment 相互依赖评估的方法
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617578
G. D'Agostino, S. Bologna, V. Fioriti, E. Casalicchio, L. Brasca, E. Ciapessoni, S. Buschi
{"title":"Methodologies for inter-dependency assessment","authors":"G. D'Agostino, S. Bologna, V. Fioriti, E. Casalicchio, L. Brasca, E. Ciapessoni, S. Buschi","doi":"10.1109/CRIS.2010.5617578","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617578","url":null,"abstract":"We report on an recent European Project aimed at assessment of suited Methodologies to measure interdependencies between the Electric and the ICT System. Based on best practices and available data, several different metrics have been defined. Depending on the methodology involved, three main types of metrics can be identified; namely “topological”; “system theory based” and “simulation based” metrics. The selected methodologies have been applied to the Roma Area electric and communication system. Results from all the different approaches are discussed. All metrics provide quantitative measures of the inter-dependence between both the two systems and their components. In addition to the established metrics, a novel “spectral” metric has been introduced specific for cascade effects. Such an innovative methodology has also been applied to the US Power Grid and results compared with those from the Roma Area.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126044999","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: 13
PCA fault location based on wide area measurement systems 基于广域测量系统的主成分分析故障定位
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617572
Yagang Zhang, Zengping Wang, Jinfang Zhang
{"title":"PCA fault location based on wide area measurement systems","authors":"Yagang Zhang, Zengping Wang, Jinfang Zhang","doi":"10.1109/CRIS.2010.5617572","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617572","url":null,"abstract":"The faults in electric power system can not be completely avoided. When power system operates from normal state to failure or abnormal operates, its electric quantities may change significantly. Our researches indicate that the variable with the biggest coefficient in principal component usually corresponds to the fault. Therefore, utilizing real-time measurements of PMU, basing on principal components analysis technology, we have completed the fault location of electric power system. Of course, because of the complexity of different types of faults in power system, there still exists enormous problems need a close and intensive study.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133978064","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
Auxiliary frequency control of HVDC systems for wind power integration 风电一体化高压直流系统的辅助频率控制
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617528
Jing Hu, Chengyong Zhao
{"title":"Auxiliary frequency control of HVDC systems for wind power integration","authors":"Jing Hu, Chengyong Zhao","doi":"10.1109/CRIS.2010.5617528","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617528","url":null,"abstract":"As a promising renewable resource, wind power is highly expected to contribute a significant part of generation in power systems in the future, but this also brings new integration related power quality issues due to its unconventional characteristics. To solve frequency fluctuating problems of wind power integration, this paper proposes an idea that it is possible and reasonable to use HVDC lines with auxiliary frequency control(AFC) to stabilize the frequency fluctuation caused by wind power, which could increase the rate of wind power integration not only, but also reduce intra-region reserve capacity and wind power cost. Furthermore, an improved frequency control strategy of HVDC is proposed. The simulation results show that the substitution of wind power frequency control reserves with the HVDC connection is possible without additional equipment and without causing large disturbances in both sides.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132971843","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
Comprehensive evaluation of power quality based on meaningful classification 基于有意义分类的电能质量综合评价
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617506
Ding Zejun, Z. Yongqiang, Chen Caihong
{"title":"Comprehensive evaluation of power quality based on meaningful classification","authors":"Ding Zejun, Z. Yongqiang, Chen Caihong","doi":"10.1109/CRIS.2010.5617506","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617506","url":null,"abstract":"In a liberalized electricity market, it is not surprising that different customers need different power quality levels with different price. So how to achieve the synthetic grading evaluation of power quality becomes a concerned problem. In this paper, the idea of classified evaluation of power quality is emphasized, and the major differences between the continuous and event-based power quality problems both in the characteristics and time scales are analyzed. In addition, least squares support vector machine (LSSVM) theory is applied to the comprehensive evaluation of continuous power quality. Meanwhile, power supply reliability index is introduced to evaluate the overall quality level of the event-based power quality. On this basis, subjective weighting method is used to achieve the comprehensive evaluation of two types of power quality problems. Comprehensive evaluation of power quality based on meaningful classification not only highlights the two types of power quality problems, but also achieves the overall level of power quality.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124576697","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: 10
Battery energy storage research of photovoltaic power generation system in micro-grid 微网光伏发电系统电池储能研究
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617540
Qi Zhao, Z. Yin
{"title":"Battery energy storage research of photovoltaic power generation system in micro-grid","authors":"Qi Zhao, Z. Yin","doi":"10.1109/CRIS.2010.5617540","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617540","url":null,"abstract":"At present, micro grid has gradually become the trend of distributed energy applications. View of battery energy storage of PV generation system in micro grid; research the battery energy storage system discharge characteristics and the realization of simulation. Simulation models are designed based on PSCAD / EMTDC platform, corresponding control strategies. Set up the equivalent model and design the control strategy of charge and discharge of battery. This paper put forward fine-tuning control strategy on the battery about Charging current and time, and simulate the model simulation. Results show that the effectiveness of control strategies designs is effective.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116442675","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: 11
Condition assessment for power transformer based on improved particle swarm optimization and Support Vector Machine 基于改进粒子群优化和支持向量机的电力变压器状态评估
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617525
Jinling Lu, Mijia Wu
{"title":"Condition assessment for power transformer based on improved particle swarm optimization and Support Vector Machine","authors":"Jinling Lu, Mijia Wu","doi":"10.1109/CRIS.2010.5617525","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617525","url":null,"abstract":"Power transformer is important to power system equipment. Due to the complex structure of power transformer, the running state of transform is difficult to be assessed accurately. The parameters of Support Vector Machine (SVM) have significant implications on the classification results. In order to obtain the best classification model, an improved particle swarm optimization (PSO) algorithm is introduced to optimize the parameters of the support vector machine (SVM). The model is based on transformer dissolved gas analysis (DGA) technique as evaluation method, the running states of transformer are divided into excellent, good, normal, attention and fault five levels, where the fault level is divided into low-temperature failure of overheating, medium-temperature failure of overheating, high-temperature failure of overheating, low energy discharge, high energy discharge and partial discharge six categories. By the analysis of sample data, we prove that using the improved PSO algorithm to optimize the SVM classifier can increase the state assessment accuracy of transformer.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122999873","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: 4
Study and Simulation of VSC-HVDC under AC Power System Faults 交流电力系统故障下vdc - hvdc的研究与仿真
2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617550
Wei Yue, Chengyong Zhao, Yi Lu, Gang Li
{"title":"Study and Simulation of VSC-HVDC under AC Power System Faults","authors":"Wei Yue, Chengyong Zhao, Yi Lu, Gang Li","doi":"10.1109/CRIS.2010.5617550","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617550","url":null,"abstract":"In this paper, control strategies of VSC-HVDC aiming to improve the ability of fault ride through of the VSC-HVDC system under serious asymmetric fault at the receiving side was studied. On the basis of DQ decoupling control scheme, two additional fault control modules are proposed based on positive and negative sequence detecting technology. One is based on negative sequence voltage compensation, and the other is based on oscillating active power elimination. Simulations are carried out in PSCAD/EMTDC to verify the validity of the proposed control strategies.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123370350","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: 6
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