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IEEE Power Engineering Society General Meeting, 2004.最新文献

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On composite load modeling for voltage stability and under voltage load shedding 电压稳定与欠压减载的复合负荷建模
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373143
R. Rifaat
{"title":"On composite load modeling for voltage stability and under voltage load shedding","authors":"R. Rifaat","doi":"10.1109/PES.2004.1373143","DOIUrl":"https://doi.org/10.1109/PES.2004.1373143","url":null,"abstract":"Undervoltage load shedding (UVLS) has been considered by some utilities as a cost-effective corrective tool to overcome voltage instability and abnormal voltage conditions. Load modeling is an important aspect for voltage stability studies and real time system controls pertinent to UVLS. At a given bus, a load would be an aggregate of load elements that would differ in their static and dynamic performance. Also at load centers, aggregate loads would encompass system components of particular characteristics such as load tap changers, SVC's and in-plant generation. Modeling aggregated loads should reflect the nature of load components and fit the applications of the model in studies and real time controls. In a tutorial style, This work discusses the evolution of static and dynamic load models for voltage stability and examines their applicability to UVLS. Load modeling approaches were listed as deterministic, generic and stochastic. Concerns and recommendations were given for adopting one approach or a combination of approaches in aggregate load modeling for UVLS. Load models validation and verification is emphasized especially when using generic or stochastic models.","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133777370","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
A failure model for distribution systems 配电系统失效模型
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373197
G. Ledwich
{"title":"A failure model for distribution systems","authors":"G. Ledwich","doi":"10.1109/PES.2004.1373197","DOIUrl":"https://doi.org/10.1109/PES.2004.1373197","url":null,"abstract":"When distribution systems have multiple sources of supply for key loads there can be a significant increase in the overall reliability. For key systems a common design has been that no loss of supply should be experienced for any single contingency. This is referred to as N-1 reliability. When the peak load is only experienced for a short time there can be gains in capital expenditure from delaying investment in additional equipment even when peak loading is above N-1 levels. If the load dependence of subsequent failure is included in the analysis there can be a significant rise in the probability of cascading failure particularly if emergency loading levels are high. This analysis indicates that if leaving N-1 design safety careful analysis of the possibility of cascading failures can be critical.","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122556299","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
Experience of blackouts and restoration practices in western region of India 印度西部地区停电与恢复实践的经验
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373303
A. Roy, P. Pentayya, S. Khaparde
{"title":"Experience of blackouts and restoration practices in western region of India","authors":"A. Roy, P. Pentayya, S. Khaparde","doi":"10.1109/PES.2004.1373303","DOIUrl":"https://doi.org/10.1109/PES.2004.1373303","url":null,"abstract":"This paper discusses several significant features of various blackouts and restoration problems encountered during the several grid disturbances in Western Region (India) during the period 1988-2003. The delays in restoration are also due to problems along the restoration paths, communication problems, etc. However, the experience of blackouts helps in preparing restoration plans in more detail.","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123085260","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: 12
Study on the transmission capacity and voltage stability of weak back-to-back HVDC system 弱背靠背直流输电系统的输电容量与电压稳定性研究
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373111
Liu Peng
{"title":"Study on the transmission capacity and voltage stability of weak back-to-back HVDC system","authors":"Liu Peng","doi":"10.1109/PES.2004.1373111","DOIUrl":"https://doi.org/10.1109/PES.2004.1373111","url":null,"abstract":"This Paper first studies the transmission power and stability limit of AC link system without reactive power compensation, and then studies the transmission power and stability limit of weak HVDC link system without reactive power compensation, as well as the impact of both the changes of AC reactance and the rectifier angle and inverter extinguisher angle on the transmission power and voltage stability. This paper holds that, in a weak back-to-back HVDC system without reactive power compensation, the increase of AC line reactance as well as the increase of the rectifier angle and inverter extinguisher angle will reduce the transmission capability and voltage stability, or even lead to voltage collapse","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123910325","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
An identification method of suspension force and magnetic unbalance pull force parameters in buried-type IPM bearingless motors 一种埋地式永磁无轴承电机悬浮力和磁不平衡拉力参数辨识方法
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373063
M. Ooshima, T. Kurokawa, M. Sakagami, A. Chiba, M. Rahman, T. Fukao
{"title":"An identification method of suspension force and magnetic unbalance pull force parameters in buried-type IPM bearingless motors","authors":"M. Ooshima, T. Kurokawa, M. Sakagami, A. Chiba, M. Rahman, T. Fukao","doi":"10.1109/PES.2004.1373063","DOIUrl":"https://doi.org/10.1109/PES.2004.1373063","url":null,"abstract":"A new on-line identification method of suspension force and magnetic unbalance pull force parameters in buried-type IPM bearingless motors has been presented in this paper. The suspension force parameters depend on the current condition, because armature reaction and magnetic saturation in the stator teeth often occur in this type of machines. Moreover, the magnetic unbalance pull force also generates due to the small airgap, which are also dependent on the current. Thus, it is necessary that these parameters are accurately identified so that the rotor shaft is stably supported. An on-line parameter identification method has been proposed. It is possible that the parameters are accurately identified by a simple experiment. It is confirmed that the suspension force decoupling tests accurately identifies the parameters. The obtained parameters by the proposed method are compared with the FEM results and discussed. The proposed on-line identification method is good enough to realize stable magnetic suspension","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121316627","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: 18
Application of dual-input PSS to 343 MVA pumped storage unit and its validation 双输入PSS在343mva抽水蓄能机组上的应用及验证
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373178
Dong-Joon Kim, Y. Moon, Hoyong Kim, Jeonghoon Shin, Taekyun Kim
{"title":"Application of dual-input PSS to 343 MVA pumped storage unit and its validation","authors":"Dong-Joon Kim, Y. Moon, Hoyong Kim, Jeonghoon Shin, Taekyun Kim","doi":"10.1109/PES.2004.1373178","DOIUrl":"https://doi.org/10.1109/PES.2004.1373178","url":null,"abstract":"This work describes practical tuning methods and testing of a dual-input prototype PSS, which uses both frequency and power, with the 343 MVA Muju P/P #2 in the KEPCO system to enhance the damping of both local and inter-area modes. A Bode plot was drawn to tune the PSS's time constants to compensate for phase lag. In addition, eigenvalue analysis was used to determine a reliable PSS gain, Ks, and a time-domain transient program was used to verify safe operation of the PSS in the presence of predictable disturbances, such as the AVR step test and generator unloading. In the on-site test, the AVR step tests at 300 MW loading at Muju P/P #2 were implemented with a dual-input prototype PSS to check to what extent the PSS damped the power oscillation of the disturbances. The recorded data showed that power oscillations were reduced considerably as the PSS gain was increased.","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116763583","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
Power quality control of hybrid wind power generation with battery storage using fuzzy-LQR controller 基于模糊lqr控制器的电池储能混合风力发电电能质量控制
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373171
H. Ko, T. Niimura, J. Jatskevich, H. C. Kim, K. Y. Lee
{"title":"Power quality control of hybrid wind power generation with battery storage using fuzzy-LQR controller","authors":"H. Ko, T. Niimura, J. Jatskevich, H. C. Kim, K. Y. Lee","doi":"10.1109/PES.2004.1373171","DOIUrl":"https://doi.org/10.1109/PES.2004.1373171","url":null,"abstract":"This work presents a modeling and control design for a wind-hybrid power system with a battery storage. The proposed control scheme is based on the Takagi-Sugeno fuzzy model and the linear quadratic regulator. The Takagi-Sugeno fuzzy model expresses the local dynamics of a nonlinear system through subsystems partitioned by linguistic rules. The controllers for each subsystem are designed by the linear quadratic regulator. In the simulation study, the proposed controller is compared with the proportional-integral (PI) controller. The simulation results show that the proposed controller is more effective than the PI controller against disturbances caused by wind speed and load variation. Thus, better quality of the wind-hybrid power system is achieved.","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116773781","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: 19
The Indian medicine 印度医学
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373302
Bhan Bhushan, A. Roy, P. Pentayya
{"title":"The Indian medicine","authors":"Bhan Bhushan, A. Roy, P. Pentayya","doi":"10.1109/PES.2004.1373302","DOIUrl":"https://doi.org/10.1109/PES.2004.1373302","url":null,"abstract":"This paper discusses an unconventional concept- tariff linked to frequency. This new concept has been introduced in India at the inter-state level, starting from mid 2002, through the three-part tariff for central generating stations, the so called availability based tariff (ABT). In this scheme overdrawals are costly when the grid is short on generation, and are cheap when the grid has surplus generating capacity. Similarly any oversupply is paid for at a high rate when frequency is below 50.0 Hz and at a low rate when the frequency is above 50.0 Hz. Underdrawal and undersupply also get the same treatment.","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115523916","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: 30
Sustainable energy systems with HVDC transmission 采用高压直流输电的可持续能源系统
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373296
G. Asplund
{"title":"Sustainable energy systems with HVDC transmission","authors":"G. Asplund","doi":"10.1109/PES.2004.1373296","DOIUrl":"https://doi.org/10.1109/PES.2004.1373296","url":null,"abstract":"Article on the necessity of efficient electric transmission on electricity to make sustainable generation of energy possible. In this respect high voltage direct current has a important role.","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114159922","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: 63
Hopf bifurcations and critical mode damping of power systems for different static load models 不同静态负荷模型下电力系统的Hopf分岔和临界模态阻尼
IEEE Power Engineering Society General Meeting, 2004. Pub Date : 2004-06-10 DOI: 10.1109/PES.2004.1373204
N. Mithulananthan, C. Cañizares
{"title":"Hopf bifurcations and critical mode damping of power systems for different static load models","authors":"N. Mithulananthan, C. Cañizares","doi":"10.1109/PES.2004.1373204","DOIUrl":"https://doi.org/10.1109/PES.2004.1373204","url":null,"abstract":"This paper discusses the effect of different static load models on Hopf bifurcations and damping ratios of critical eigenvalues of power systems. The three most commonly used load models, i.e. constant impedance, constant current and constant power, are investigated under various system operating conditions and with different power system controllers. Some interesting observations are made regarding the damping ratio of critical modes, which may be useful for design for oscillation controls in power systems","PeriodicalId":236779,"journal":{"name":"IEEE Power Engineering Society General Meeting, 2004.","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114896106","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: 18
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