Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)最新文献

Critical evaluation of direct and iterative methods for solving Ax=b systems in power flow calculations and contingency analysis 潮流计算和偶然性分析中求解Ax=b系统的直接和迭代方法的关键评价

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-21 DOI: 10.1109/PICA.1999.779380

A. Alves, E. Asada, A. Monticelli

引用次数: 32

Bidding strategies in electricity markets 电力市场中的竞价策略

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-21 DOI: 10.1109/PICA.1999.779387

W. Mielczarski, G. Michalik, M. Widjaja

引用次数: 49

Two novel screening methods to decide network configurations to maintain voltage stability using sensitivity analysis 利用灵敏度分析确定电网配置以保持电压稳定的两种新型筛选方法

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-21 DOI: 10.1109/PICA.1999.779388

Y. Tada, H. Okamoto, R. Tanabe, N. Kobayashi, Y. Sekine

{"title":"Two novel screening methods to decide network configurations to maintain voltage stability using sensitivity analysis","authors":"Y. Tada, H. Okamoto, R. Tanabe, N. Kobayashi, Y. Sekine","doi":"10.1109/PICA.1999.779388","DOIUrl":"https://doi.org/10.1109/PICA.1999.779388","url":null,"abstract":"This paper discusses screening methods in the planning stage which are able to find suitable power network configurations to maintain voltage stability. The electrical characteristics of power systems depend strongly on network configuration. However, to find the best network configuration is difficult because there are many objectives and constraints. In this paper, the relation between reactive power loss of transmission networks and voltage sensitivity is made clear to screen out suitable network configurations for maintaining voltage stability from among many candidates; the voltage sensitivity expresses the variation of node voltage magnitude when a unit active power supply is increased from one of the nodes. Two screening methods in the planning stage are proposed. The first method uses linear programming techniques and decides transmission lines which could be disconnected without deteriorating voltage stability; disconnection of transmission lines is effective for reducing the short circuit current though it may worsen the voltage stability. The second proposed is the use of new index called the generator installation site index. The index can be used to determine where a new generator should be installed to best improve the voltage stability. This index is calculated from variation of total demand voltage sensitivity when a unit of active power is supplied from one of the nodes.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124512609","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

Quantitative assessments for transient voltage security 暂态电压安全性定量评估

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-21 DOI: 10.1109/PICA.1999.779391

Y. Xue, T. Xu, B. Liu, Y. Li

{"title":"Quantitative assessments for transient voltage security","authors":"Y. Xue, T. Xu, B. Liu, Y. Li","doi":"10.1109/PICA.1999.779391","DOIUrl":"https://doi.org/10.1109/PICA.1999.779391","url":null,"abstract":"Transient voltage security means that the power system is both transient voltage stable and transient voltage dips acceptable. These definitions are clarified in this paper. A self-start technique for computing transient voltage stability related limits is proposed. Based on a margin for transient voltage dip acceptability, a criterion for early termination of the simulation is put forward. Moreover, the procedure of calculating critical clearing time for transient voltage security is extended to that of calculating the critical load level, the minimum reactive power resources and minimum load shedding for keeping transient voltage security. It is also suggested that transient angle stability and transient voltage stability and transient voltage dip acceptability be quantitatively assessed along the same simulation trajectory. The most critical one among the three kinds of limits is regarded as the global transient security limit. The effectiveness and robustness of the proposed approach are demonstrated in this paper with statistic information resulting from 47,987 test cases on two practical power systems.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"195 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134063703","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: 72

Security Constrained Unit Commitment for open markets 开放市场的安全约束单位承诺

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-21 DOI: 10.1109/PICA.1999.779383

Arthur I. Cohen, Vladimir Brandwajn, Show-Kang Chang

{"title":"Security Constrained Unit Commitment for open markets","authors":"Arthur I. Cohen, Vladimir Brandwajn, Show-Kang Chang","doi":"10.1109/PICA.1999.779383","DOIUrl":"https://doi.org/10.1109/PICA.1999.779383","url":null,"abstract":"For many electric power systems the limitations of the transmission network strongly affect the system operation. In traditional regulated power systems, the operator follows operating rules and procedures to schedule generation so that the power system operates reliably. As the power industry moves towards open markets, it is necessary to develop power system schedules that produce high-quality nondiscriminatory schedules that are consistent with secure operation. This paper describes the Security Constrained Unit Commitment (SCUC) program that has been developed to meet this need. The SCUC program optimizes the scheduled generation and price-sensitive load while satisfying generation, reserve requirements, transmission constraints, and generator operating constraints such as minimum up and down times. The transmission constraints modeled are of two types: branch-flow constraints insuring that line and interface thermal limits are satisfied (for steady-state operating conditions) for the forecasted network configuration and for the configuration with a specified set of network and generator outages (i.e. contingencies). These constraints, which are enforced in a preventive mode, an automatically generated by the program; and import and export constraints limiting the generation from specified generators and loads. These constraints which can be used to model voltage and dynamic security constraints, are developed using offline analysis and are inputs to the program. This paper describes the methods used to develop secure schedules and describes our experience using this program.","PeriodicalId":113146,"journal":{"name":"Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117306872","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: 61

Energy and ancillary service dispatch for the interim ISO New England electricity market 临时ISO新英格兰电力市场的能源和辅助服务调度

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-21 DOI: 10.1109/PICA.1999.779384

K. Cheung, P. Shamsollahi, D. Sun, J. Milligan, M. Potishnak

引用次数: 183

Testing equality constraint hypotheses in weighted least squares state estimators 加权最小二乘状态估计中等式约束假设的检验

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-21 DOI: 10.1109/PICA.1999.779379

A. Monticelli

引用次数: 24

Optimal power flow by a nonlinear complementarity method 非线性互补法的最优潮流

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-16 DOI: 10.1109/PICA.1999.779405

Leite Torres, V. Quintana

引用次数: 71

A method for simulation and analysis of reactive power market 一种无功电力市场仿真分析方法

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-16 DOI: 10.1109/PICA.1999.779516

S. Abmed, G. Strbac

引用次数: 88

Improved sensitivities in MW dispatch for control of voltage 提高了MW调度对电压控制的灵敏度

Proceedings of the 21st International Conference on Power Industry Computer Applications. Connecting Utilities. PICA 99. To the Millennium and Beyond (Cat. No.99CH36351) Pub Date : 1999-05-16 DOI: 10.1109/PICA.1999.779406

K. Bell, D. Kirschen

引用次数: 13