{"title":"Basic characteristics of a rotary power flow controller","authors":"H. Fujita, S. Ihara, E. Larsen, W. Price","doi":"10.1109/PESW.2000.850197","DOIUrl":"https://doi.org/10.1109/PESW.2000.850197","url":null,"abstract":"Control of power flow between parallel paths in an AC network requires the regulated injection of a series voltage. Chubu Electric Power Company (CEPCO) foresees a need for a smooth, fast, and repetitive control of power flow along CEPCO's parallel transmission paths. A power flow controller based on rotary phase-shifting transformers may offer an attractive alternative approach to conventional phase-shifting transformers or power electronic devices. This paper describes the basic characteristics of a rotary power flow controller and a potential application on the CEPCO system.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126094359","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}
{"title":"Subtransmission system reliability enhancement using a thyristor controlled series capacitor","authors":"M. Fotuhi-Firuzabad, R. Billinton, S. Faried","doi":"10.1109/PESW.2000.847325","DOIUrl":"https://doi.org/10.1109/PESW.2000.847325","url":null,"abstract":"Summary form only given as follows. This paper examines the impact of thyristor controlled series capacitors (TCSC) on distribution substation system reliability. In this application, the TCSC are employed in a system to adjust the transmission infeed impedances and, therefore, increase the transmission system capacity without increasing the system fault current levels. In this context, a reliability model of a multi-module TCSC has been developed and incorporated in the transmission system. Two kinds of performance indices designated as the delivery-point and system indices are presented to examine the impact of TCSC on the subtransmission system reliability. The results of the investigations show a significant improvement in the delivery point and system reliability when utilizing the TCSC. The technique is illustrated by application to several different subtransmission schemes.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126863696","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}
{"title":"A reduced order equivalent model of large power systems for the stability analysis","authors":"Byunghun Chang, J. Choo, Sae-Hyuk Kwon","doi":"10.1109/PESW.2000.850091","DOIUrl":"https://doi.org/10.1109/PESW.2000.850091","url":null,"abstract":"A procedure for constructing a reduced order equivalent model of large power systems has been proposed. The generators are grouped into coherent groups. The KEPCO system which consists of 237 generators has been equivalent to a 65-generator system. The simulation results for the equivalent system has been compared to those of the original system. The desired static and dynamic characteristics of the original system are carefully preserved.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126874952","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}
Liu Shiming, Yin Xianggen, Chen Deshn, Tao Huiliang
{"title":"Fault component negative-sequence energy direction protection for generators","authors":"Liu Shiming, Yin Xianggen, Chen Deshn, Tao Huiliang","doi":"10.1109/PESW.2000.847639","DOIUrl":"https://doi.org/10.1109/PESW.2000.847639","url":null,"abstract":"Fault component negative-sequence direction (FCNSD) relays only need three phases voltages and currents at generator terminals, and can detect various asymmetrical faults in generators with a very high sensitivity. In this paper, the instantaneous negative-sequence symmetrical components, which are based on the Lyon transform an used in the FCNSD relay. From the results of tests on a laboratory generator-transformer unit, it is found that there are very large harmonic constituents in the Lyon component power values. The mechanism of these harmonic constituents is theoretically derived in the paper. To eliminate the influence of the harmonic constituents, a new criteria is proposed-fault component negative-sequence energy direction (FCNSED) protection.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114944012","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}
Yun-ping Chen, Chengxue Zhang, Zhijian Hu, Xurui Wang
{"title":"A new approach to real time measurement of power angles of generators at different locations for stability control","authors":"Yun-ping Chen, Chengxue Zhang, Zhijian Hu, Xurui Wang","doi":"10.1109/PESW.2000.850123","DOIUrl":"https://doi.org/10.1109/PESW.2000.850123","url":null,"abstract":"It is important to realize real time measurement of the bus voltage phasor of substations and the power angles of generators at different locations for stability control. Traditionally, EMS uses the data of bus voltages, line currents and phase angle between them to calculate the power angles of generators. This is an indirect method. The calculation time of the method is too long to be used in real-time control. A new method based on GPS is proposed in the paper which can not only measure the bus voltages and currents phasor of substations, generators at different locations, but also the power angles of generators in operation. The principle and realization are discussed in the paper. Theoretical analysis and experimental results prove that the new measurement method is correct and effective.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115355747","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}
{"title":"PWM-CAD1: an interactive and efficient PWM inverter training kit","authors":"S. Kaitwanidvilai, W. Khan-ngern","doi":"10.1109/PESW.2000.850168","DOIUrl":"https://doi.org/10.1109/PESW.2000.850168","url":null,"abstract":"In this paper, the presentation of inverter performance in visual, Matlab with Simulink program and EPROM digital control circuit are used as the computer aided training, simulation and designation which called as PWM-CAD1 kit. The presentation shows the circuit, waveform, mathematics equations of waveform, and inverter performance of switching patterns in the both of simulation and practical results included in PWM-CAD1. The important point of this kit for education is that the students can interactively modify overall necessary parameter of inverter design. The all output properties and waveform are clearly shown both of simulation results and practical waveform on the inverter circuit in the kit. Finally, this kit will be used as an interactive tool that arranged in good way for learning, designation and simulation.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116556859","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}
{"title":"Gas insulated transmission lines (GIL): ready for the real world","authors":"T. Hillers","doi":"10.1109/PESW.2000.850061","DOIUrl":"https://doi.org/10.1109/PESW.2000.850061","url":null,"abstract":"Gas-insulated transmission lines (GIL) are a further development of the tubular conductor intended for long distances and are especially suitable for connecting conurbations to centers of power supply. They are also as \"invisible\" as ordinary power cables as well as having a number of other advantages. The first mixed-gas-insulated power transmission line in the world successfully completed its field trials with an endurance test in early 1999. The most important aim in the further development of tubular conductors for long distance power transmission was to reduce costs so that they can be used economically over distances of up to several kilometers. This has now been achieved. The system costs of the gas-insulated transmission lines developed by Siemens are now only a factor of 8 or 10 above those of overhead power lines down from a factor of 30. Now the GIL has reached the order of magnitude to be accepted by utilities if an overhead line must be brought underground. The basis of this reduction in costs was the adaptation of installation techniques similar to those used in laying pipelines. The simplification and standardization of individual components, and the use of a sulfur hexafluoride (SF/sub 6/) and nitrogen (N/sub 2/) gas mixture. In the past, pure SF/sub 6/ has been the most widely used gas for tubular conductors, most of which have been incorporated into substations.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122500871","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}
{"title":"Role of the electric vehicle as a distributed resource","authors":"S. Rahman, Y. Teklu","doi":"10.1109/PESW.2000.850019","DOIUrl":"https://doi.org/10.1109/PESW.2000.850019","url":null,"abstract":"The growing concern about environmental degradation, and increasing amounts of greenhouse gas emissions from automobiles have generated significant interests among citizens, auto manufacturers and governments around the world to develop affordable and workable electric vehicles. Both fuel cell and electric battery operated vehicles are being considered for commercial deployment within the next five years. The availability of such technologies will offer new opportunities for distributed energy sources for partially meeting household electricity demand. The unique concept presented in this paper deals with using the electric vehicle (EV) as a home-based power plant supplying electricity during hours of high price, and under emergency situations. Such dual-use opportunity for the EV will allow the EV owner to get financial benefits that can be used for servicing the car/battery lease expenses. This paper deals with modeling the available capacity for stationary electricity output (while the vehicle is not on the road), the proper charging sequence, forecasting the load servicing capability of the EV battery or the fuel cell, and the system level load impact when the batteries are charged. The load servicing capability of the dual-purpose EV (DPEV) will determine the type of loads and duration of supply that can be provided by the on-board power plant.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"57 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114032253","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}
{"title":"Short-term power load forecasting by neural network with stochastic back-propagation learning algorithm","authors":"R. Hwang, Huang-Chu Huang, J. Hsieh","doi":"10.1109/PESW.2000.847623","DOIUrl":"https://doi.org/10.1109/PESW.2000.847623","url":null,"abstract":"In this paper, a short-term power load forecaster based on a neural network with stochastic back-propagation learning algorithm is developed. This modified learning rule can effectively help the load forecaster escape from a local minimum while it is trained. Consequently, the proposed load forecaster has more accurate prediction in forecasting operation. As a comparison, the same experiments are also performed by using a neural network with a traditional back-propagation learning rule which has constant learning rate and momentum.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116841706","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}
{"title":"Main grid development planning in a deregulated market regime","authors":"K.S. Hornnes, O. S. Grande, B. Bakken","doi":"10.1109/PESW.2000.850035","DOIUrl":"https://doi.org/10.1109/PESW.2000.850035","url":null,"abstract":"To inspire the monopoly network owners to act in a rational and socio-economic way, the Norwegian authorities have introduced an incentive-based regulation regime. Experiences show that this regime has a shortage with respect to main grid development. A vital aspect of the regime is to provide corporate profitability to projects that are proven to be socio-economic profitable. The weak point in current regime is the lack of correlation between the effect of improved network utilisation due to an investment and the calculated corporate profit of the investment. A correct calculation of socio-economic benefit of an investment is essential in an improved future regime. This paper describes an improved method for simulation of main grid utilisation including a market clearing process where transmission restrictions are taken into account. In the Norwegian hydro dominated system, there is a strong and stochastic variability of timing and location of energy input to the system, and certain flexibility on the market side. The model takes these aspects into account in calculation of reduced cost associated with congestion and changes in cost of losses.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"42 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129557402","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}