PECon 2004. Proceedings. National Power and Energy Conference, 2004.最新文献_第3页

Performance for passive and active power filter in reducing harmonics in the distribution system 无源滤波器和有源滤波器在配电系统中的降谐波性能

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461625

M. Izhar, C. M. Hadzer, M. Syafrudin, S. Taib, S. Idris

{"title":"Performance for passive and active power filter in reducing harmonics in the distribution system","authors":"M. Izhar, C. M. Hadzer, M. Syafrudin, S. Taib, S. Idris","doi":"10.1109/PECON.2004.1461625","DOIUrl":"https://doi.org/10.1109/PECON.2004.1461625","url":null,"abstract":"This paper presents the results for the performance of passive and active power filter to reduce harmonics in the distribution system. The harmonics analysis is performed in order to observe the percentage reduction of amplitude current harmonics and total harmonic distortion for passive and active power filter at various loads. In addition to that the bidirectional switching is used as a strategy control in active power filter. Representative result of circuit simulations is carried out. The results show that the active power filter can simultaneously attenuate various frequencies and are compared with passive filter which is only filtering an individual harmonics. Also, the significant percentage of reduction for the amplitude current harmonics and total harmonic distortion by active power filter are compared to passive filter. Furthermore, the sinusoidal current waveform quality at distribution lines which filtered by active power filter is better compared with passive filter. Therefore, the active power filter is good to reduce harmonics in the electrical distribution systems.","PeriodicalId":375856,"journal":{"name":"PECon 2004. Proceedings. National Power and Energy Conference, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133481685","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: 71

Modeling and simulation of sodium sulfur battery for battery-energy storage system and custom power devices 用于电池储能系统和定制动力装置的钠硫电池建模与仿真

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461644

L. W. Chung, M. Siam, A. Ismail, Z. Hussien

引用次数: 31

Genetic algorithm based optimal on load transformer tap setting for loss minimization in power transmission system 基于遗传算法的负荷变压器分接整定优化在输变电系统中的应用

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461657

M.S.A. Abdul Wahab, I. Musirin, T. Rahman, M. Latip

引用次数: 4

Review of control strategies for power quality conditioners 电能质量调节器控制策略综述

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461626

N. Mariun, A. Alam, S. Mahmod, H. Hizam

引用次数: 56

Design of a prototype D-STATCOM for voltage sag mitigation 用于电压暂降缓解的D-STATCOM原型设计

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461617

Hendri Masdi, Norman Mariun, S. Mahmud, Azah Mohamed, S. Yusuf

引用次数: 78

Unipolar SPWM HF link soft switching DC/AC converter 单极SPWM高频链路软开关DC/AC变换器

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461627

C. Nge, Z. Salam

引用次数: 5

A proposed strategy of implementation for load shedding and load recovery with dynamic simulations 提出了一种基于动态仿真的减载和负荷恢复实现策略

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461640

I.N. Perumal, C. C. Ying

{"title":"A proposed strategy of implementation for load shedding and load recovery with dynamic simulations","authors":"I.N. Perumal, C. C. Ying","doi":"10.1109/PECON.2004.1461640","DOIUrl":"https://doi.org/10.1109/PECON.2004.1461640","url":null,"abstract":"Electric load shedding is implemented to maintain the generation power margin at nominated level when load demand is higher than electric supply. This prevents the widespread system collapse when a fault occurs. The scope of study consists of system analysis, design and simulation. Dynamic simulations are performed using the ERACS power analysis software. When the frequency falls below preset level at a certain rate, a predetermined amount of load will be removed to restore the system frequency. Important design considerations for this scheme are the maximum anticipated overload, number of load shedding steps, size of load shed at each step and frequency relay settings. Load restoration after load shedding can only be executed after the system has recovered completely and its normal frequency is restored. Loads should be restored in small blocks sequenced by time delay between successive restorations to allow frequency stabilization. A case study is carried out on PETRONAS Penapisan Melaka, whereby a load shedding scheme is designed for its upcoming cogeneration plant. Dynamic simulations performed indicate that the load shedding design is feasible and able to halt frequency collapse due to generation loss. The design strategy, calculations and justification are presented in this paper.","PeriodicalId":375856,"journal":{"name":"PECon 2004. Proceedings. National Power and Energy Conference, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117068914","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

Costs optimization for unit commitment and economic load dispatch in large scale power systems 大型电力系统机组投入成本优化与经济负荷调度

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461641

Norhamimi, Musse Mohamud Ahmed, I. Hassan

{"title":"Costs optimization for unit commitment and economic load dispatch in large scale power systems","authors":"Norhamimi, Musse Mohamud Ahmed, I. Hassan","doi":"10.1109/PECON.2004.1461641","DOIUrl":"https://doi.org/10.1109/PECON.2004.1461641","url":null,"abstract":"Power generation business profit depends on the power systems operational costs. Finding an optimal solution to the unit commitment (UC) and economic load dispatch (ELD) is one of the smart strategies that being practiced by most of power producers. UC and ELD main problems are to find the minimum total fuel cost and fast computation simulation time scheduling of UC and ELD. Obtaining the best solution to these two problems lead to remarkable saving in the power system operational cost Lagrangian relaxation (LR) is one of the best solution methods to UC and ELD problems. The approach is more efficient and easier than other methods in solving large-scale problems. Lately, the emerging of bundling methods (BM) improves the weakness of LR. Through BM, the LR dual functions are updated at the higher level. With the use of interior point method as an initialization method this paper presents LR and BM based solution technique to UC and ELD problems. It is based on application of the said techniques to thermal units consisting of 45 generators. A comparison has been made with a data taken from Tenaga Nasional Berhad (TNB) and the results found from this system have been compared to that of TNB results.","PeriodicalId":375856,"journal":{"name":"PECon 2004. Proceedings. National Power and Energy Conference, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124852515","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

A PSPICE-based design of DC-DC converter systems 基于pspice的DC-DC变换器系统设计

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461619

N. D. Muhamad, A. Yatim, A.J. Shafie

引用次数: 3

Application of LC filter in harmonics reduction LC滤波器在谐波抑制中的应用

PECon 2004. Proceedings. National Power and Energy Conference, 2004. Pub Date : 2004-11-29 DOI: 10.1109/PECON.2004.1461656

N. Mahamad, M. Hadzer, Syafrudin Masri

{"title":"Application of LC filter in harmonics reduction","authors":"N. Mahamad, M. Hadzer, Syafrudin Masri","doi":"10.1109/PECON.2004.1461656","DOIUrl":"https://doi.org/10.1109/PECON.2004.1461656","url":null,"abstract":"In recent years, harmonics are considered as one of the most essential problems in electrical power systems. Even though, this new highly efficient electronic technology provides improved product quality with increased productivity by the use of smaller and lighter electrical components but they are the sources of harmonics. Recent surveys on the three-phase four-wire electric power distribution systems with computer and nonlinear loads show excessive currents in the neutral conductor. The neutral currents are basically zero-sequence current harmonics, which is mostly, consists of triplen current harmonics. As a result, the perfect sinusoidal voltage and current waveform are very much distorted. To solve this problem, a simple and practical approach to reduce harmonics current in 3-phase 4-wire power distribution system is proposed. The using of LC filter in three-phase four-wire system reduces the harmonic problem in the system. This LC filter is depending on value of capacitor and inductor. It is not only reducing zero-sequence harmonics but also reduce other harmonics in the system. Besides that, this application also can improve power factor and reduced the THD system to the standard IEEE-std 519. The practical excellency and validity of reducing are demonstrated experimentally.","PeriodicalId":375856,"journal":{"name":"PECon 2004. Proceedings. National Power and Energy Conference, 2004.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126253938","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: 17