2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability最新文献_第3页

Contingency assessment for voltage dip and short term voltage stability analysis 电压跌落应急评估和短期电压稳定分析

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410569

A. Tiwari, V. Ajjarapu

{"title":"Contingency assessment for voltage dip and short term voltage stability analysis","authors":"A. Tiwari, V. Ajjarapu","doi":"10.1109/IREP.2007.4410569","DOIUrl":"https://doi.org/10.1109/IREP.2007.4410569","url":null,"abstract":"This paper proposes a novel approach for contingency filtering, ranking and assessment for contingencies that cause power quality and voltage instability problems. The approach consists of two-block technique: the first block filters out dangerous contingencies from a list of credible contingencies; then second block ranks and assesses them. Apart from ranking contingencies in order of their severity (CSI); a new concept of finding dynamic bus voltage vulnerability index (DBVVI) is proposed and is used to rank buses in order of their vulnerability. This filtering, ranking and assessment (FRA) approach uses decoupled time domain method for analysis. Decouple time-domain method is a good blend of accuracy and computational efficiency. The proposed FRA approach is totally generic; it can adapt itself to any specifics of power system (i.e. modeling, protection), any contingency scenario (i.e. N-1, N-2), and for any type of application (planning, operation). The approach is illustrated on IEEE 39 Bus system. The capability of filtering and ranking methodology is illustrated by its performance criteria: reliability, effectiveness and computational efficiency. Finally, the information obtained from filtering and ranking is used for assessment to provide planner/operator with sound information to aid them in deciding an effective control strategy to make power system more robust.","PeriodicalId":214545,"journal":{"name":"2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124572800","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: 21

Stability enhancement through reinforcement learning: Load frequency control case study 通过强化学习增强稳定性:负荷频率控制案例研究

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410552

Sara Eftekharnejad, A. Feliachi

引用次数: 18

Comparative study of the symmetric and asymmetric approaches to increase power transfer capacity of a corridor 走廊电力输送能力对称与非对称提升途径的比较研究

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410512

R. Mohamedi, S. Lefebvre, A. Ba, A. Houle

引用次数: 0

Multichoice Control Strategy for VSC-HVdc VSC-HVdc多选择控制策略

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410511

H. Latorre, M. Ghandhari, L. Soder

引用次数: 17

Globally convergent state estimation based on givens rotations 基于给定旋转的全局收敛状态估计

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410530

Antonio Simões Costa, R. Salgado, Paulo Haas

引用次数: 8

System Integrity Protection Schemes (SIPS) 系统完整性保护计划(SIPS)

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410522

M. Begovic, V. Madani, D. Novosel

引用次数: 36

Cascading failures in electric power systems: What about prices? 电力系统的级联故障:价格如何?

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410571

D. Watts, Hui Ren

{"title":"Cascading failures in electric power systems: What about prices?","authors":"D. Watts, Hui Ren","doi":"10.1109/IREP.2007.4410571","DOIUrl":"https://doi.org/10.1109/IREP.2007.4410571","url":null,"abstract":"Given the incidence of blackouts during recent years, there has been an increased interest in understanding them to take corrective or mitigating measures, limiting their occurrence and scope in the future. Different models have been proposed to represent these sequences of events. The power tails found by some researchers in the latest North American blackout size distribution have led them to think of power systems as complex dynamical systems, drifting away from more traditional electric power system reliability models. The main contributions of this paper are: (a) Briefly review different models of blackouts and cascading in power systems, (b) Identify the role that electricity spot prices should have in those models, and (c) Enlarge one of the existing models by modeling prices and its role in the development of the system in a computationally efficient way. We conclude that the representation of an evolving market is perfectly compatible with the idea of understanding power markets/systems as complex dynamical systems. We also provide arguments supporting the idea that those markets and prices must be a part of any cascading models, especially if they model any longer-term system evolution.","PeriodicalId":214545,"journal":{"name":"2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125435322","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

Modified algorithm to trace critical eigenvalues of power system with sensitivities via continuation of invariant subspaces 利用不变子空间的延拓，改进了带灵敏度跟踪电力系统临界特征值的算法

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410558

C. Luo, V. Ajjarapu

{"title":"Modified algorithm to trace critical eigenvalues of power system with sensitivities via continuation of invariant subspaces","authors":"C. Luo, V. Ajjarapu","doi":"10.1109/IREP.2007.4410558","DOIUrl":"https://doi.org/10.1109/IREP.2007.4410558","url":null,"abstract":"The critical eigenvalue tracing in reference [1] is further modified to extract further useful information. This includes the direction and the speed of movement of eigenvalues. The algorithm is both robust and efficient. The calculation of invariant subspaces is basically solving Riccati equation, which is equivalent to solving bordered matrix equations of Sylvester type. The bordered Bartels-Stewart algorithm is used to solve it effectively. The subspace continuation technique allows us to uniquely identify the image of the movement of the set of the critical eigenvalues w.r.t. the change of the continuation parameter (such as system load level etc.). Furthermore, the eigenvalue and eigenvector sensitivities can also be obtained as by-products. An eigenvalue index is proposed to determine the critical eigenvalue that might affect the stability change of the system. It can be used to estimate the oscillatory stability margin boundary of the system during the continuation by linear estimation. Finally, the numerical techniques are applied to study the New England 39 - bus system.","PeriodicalId":214545,"journal":{"name":"2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125936853","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

Contribution of loads to low frequency oscillations in power system operation 电力系统运行中负荷对低频振荡的贡献

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410523

C. Sharma, P. Singh

{"title":"Contribution of loads to low frequency oscillations in power system operation","authors":"C. Sharma, P. Singh","doi":"10.1109/IREP.2007.4410523","DOIUrl":"https://doi.org/10.1109/IREP.2007.4410523","url":null,"abstract":"Eigen-based tools have normally been used to predict the development of low frequency oscillation in power systems. A method must be developed to study the effect of loading and load characteristics on the development of low frequency oscillations. This paper is concerned about modeling a power system for low frequency oscillations studies. The purpose is to examine the effect of loads and their modeling on the study mentioned. Research shows that low frequency oscillations are a small signal stability problem. This allows the use of Eigenvectors and Eigenvalues to examine the stability of the power system in the advent of load variation. In this study a mathematical model of the dynamic power system must be built and the initial values of the variables in the model calculated using a load flow. The power system model consists of the non-linear equations which must be linearized about the operating values of the system. The system state matrix can then be constructed from the linearized power system model. Software was written in Matlab 7.0 to perform these mentioned computations. This paper also uses tools such as Participation factors and Mode shape. These tools were useful in examining the effect of loads on the system stability.","PeriodicalId":214545,"journal":{"name":"2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127279695","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

Bulk power system reliability assessment considering protection system hidden failures 考虑保护系统隐性故障的大容量电力系统可靠性评估

2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability Pub Date : 2007-12-26 DOI: 10.1109/IREP.2007.4410581

Fang Yang, A. Meliopoulos, G. Cokkinides, Q. B. Dam

{"title":"Bulk power system reliability assessment considering protection system hidden failures","authors":"Fang Yang, A. Meliopoulos, G. Cokkinides, Q. B. Dam","doi":"10.1109/IREP.2007.4410581","DOIUrl":"https://doi.org/10.1109/IREP.2007.4410581","url":null,"abstract":"In power system planning and operation procedures, bulk power system reliability assessment plays an important role. The current practice of such assessment generally assumes that protection systems are perfect, and the effects of protection system hidden failures are ignored. Recent research, however, shows that protection system hidden failures have been recognized as a contributing factor to power system cascading outages. To evaluate bulk power system reliability considering the impact of protection system hidden failures, this paper proposes a systematic methodology that is based on a breaker-oriented system network model including detailed substation configurations and protection system schemes. An analysis of hidden failures in major protection system components is conducted. Based on the results of this analysis, this study focuses on the effects of hidden failures in circuit breaker trip mechanisms (CBTMs). The probabilistic model of the CBTM is built, and a hidden failure effects analysis procedure is developed to obtain contingences resulting from CBTM hidden failures. Such contingencies as well as other contingencies resulting from independent outages and common-mode outages are subjected to a security-constrained adequacy evaluation approach to evaluate system reliability. The proposed methodology is demonstrated with a breaker-oriented 24-substation reliability test system. Evaluation results show that protection system hidden failures downgrade the system reliability level due to the fact that they lead to the outages of undamaged equipment following initial system disturbances.","PeriodicalId":214545,"journal":{"name":"2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127512171","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: 20