{"title":"Economic dispatch towards maximising social welfare in a re-regulated environment","authors":"C. Chang, Zhimin Zhang, A. Liew","doi":"10.1109/EMPD.1998.705522","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705522","url":null,"abstract":"With the participation of nonutility generation in a fast-growing energy market, a contracted minimum energy (CME) constrained economic dispatch problem has emerged and became a common concern between the host utility, independent power producer and regulatory body. This paper formulates the CME constrained dispatch problem and presents an optimisation technique based on duality theory. By introducing the concept of subsidised incremental cost, we have interpreted the essence of CME constraints and set up a modified equal incremental criterion under new operation environment and open energy market.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116793334","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":"LFC and stabilisation of multi-area interconnected power system by decentralized control of a SMES and solid-state phase shifters","authors":"I. Ngamroo, Y. Mitani, K. Tsuji","doi":"10.1109/EMPD.1998.705436","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705436","url":null,"abstract":"This paper proposes a decentralized direct tie-line power flow control strategy of a superconducting magnetic energy storage (SMES) unit and a solid-state phase shifter (SSPS) for load frequency control (LFC) and power system stabilization in multi-area interconnected power systems. Simulation results distinctly exhibit that, under the occurrence of sudden load fluctuations or some disturbances in any areas, the proposed control strategy is capable of suppressing the area frequencies as well as stabilizing inter-area oscillations modes, simultaneously and effectively.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123725590","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":"Model development of an actual HVDC control for the RTDS/sup TM/ simulator","authors":"W. J. Giesbrecht, X. Jiang, G. Mazur","doi":"10.1109/EMPD.1998.702700","DOIUrl":"https://doi.org/10.1109/EMPD.1998.702700","url":null,"abstract":"The development of detailed models of the Manitoba Hydro HVDC Bipole I and Bipole II controls has been undertaken to allow rapid evaluation of contemplated changes to the controls and to allow evaluation of potential adverse interaction with physical controls on remote power system components. Ideally, a duplicate set of HVDC controls would be connected to a real time simulator to study these problems. In this case however, duplicate controls were not a practical possibility and detailed software models for the RTDS/sup TM/ have been developed instead. To implement the controls on the RTDS/sup TM/, software models are first written in FORTRAN and tested using PSCAD/EMTDC. The models are then converted into functional blocks for integration into the RTDS/sup TM/ Controls Compiler. Final evaluation and debugging of the control blocks is done for each subsystem and a reduced HVDC model. After satisfactory subsystem response is achieved, the overall system response is compared with EMTDC models.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128341477","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}
Tae-Eung Kim, P. Ji, Jong-Pil Lee, Sang-Cheon Nam, Jung-Hoon Kim, Jae-Yoon Lim
{"title":"Load characteristics identification using artificial neural network and transient stability analysis","authors":"Tae-Eung Kim, P. Ji, Jong-Pil Lee, Sang-Cheon Nam, Jung-Hoon Kim, Jae-Yoon Lim","doi":"10.1109/EMPD.1998.705547","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705547","url":null,"abstract":"The modeling of load characteristics is a difficult problem because of uncertainty of the load. This research uses artificial neural networks which can approximate the nonlinear problem to represent load characteristics. After the selection of a typical load, active and reactive power for the variation of voltage and frequency is obtained from experiments. On the basis of obtained data, the load model represented by a neural network is acquired Then the propriety is submitted by case studies.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121199921","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}
T. Kato, H. Horibe, N. Hayakawa, Y. Suzuoki, Y. Kaya
{"title":"Economic evaluation of independent power producers (IPPs) viewed from total generating costs of electric power systems","authors":"T. Kato, H. Horibe, N. Hayakawa, Y. Suzuoki, Y. Kaya","doi":"10.1109/EMPD.1998.705517","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705517","url":null,"abstract":"In Japan, electric power utilities purchase electricity from independent power producers (IPPs) through competitive bidding, where the evaluation of IPP is based on the avoided cost of corresponding generators of utilities. In this evaluation, however, it is difficult to take into account the nonpricing factors such as power flow constraints in the electric power system. In this paper, we evaluated the maximum price to purchase the electricity from IPP on the basis of total generating costs of the electric power utilities, which was referred to as the breakeven cost. The main results are summarized as follows: (1) the breakeven cost depends on various factors such as IPP's generating pattern, location and capacity; (2) the breakeven cost for the base-type IPP is higher than the avoided cost of corresponding utility generator, because an IPP located at the end of the distribution system can reduce the transmission loss in the electric power system; and (3) the capacity of available utility generators affects the breakeven cost especially for the peak-type IPP which generates only during the peak demand period.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122560996","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":"Proposal of an open-electric-energy-network (OEEN) to realize cooperative operations of IOU and IPP","authors":"J. Toyoda, H. Saitoh","doi":"10.1109/EMPD.1998.705515","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705515","url":null,"abstract":"After deregulation, there are many entities, such as IOUs (investor owned utilities) IPPs, marketers, aggregators, ISO and security coordinator in power industries. This paper discusses two topics of cooperative operations among IOUs and IPPs. One is an ecological model to simulate the market power of IOU and IPP based on Lotka-Volterra competition model. We can demonstrate the share competition of IOU and LPP by using this model. The co-evolution model of electricity price among IOU and IPP is also introduced. Another is a supplementary power network which makes it possible for many types of dispersed generation plants to generate effectively and to participate in a market circumstance without disadvantages of existing power utilities. This power network is called OEEN (open electric energy network) because the network is open to the many entities with respect to the small scale transactions. Elements of OEEN system are dispersed energy storage devices, load controllers and a data communication link. In OEEN system, a transaction power is treated as an energy package wrapped with an information tag. We call this concept as an electricity-power-packet (EPP). These concepts are discussed in the paper.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126017257","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 practical neural network approach for power generation automation","authors":"Mahmoud Moghavvemi, Soo Siang Yang, M. Kashem","doi":"10.1109/EMPD.1998.705543","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705543","url":null,"abstract":"This paper presents a practical artificial neural network (ANN) based technique for the automation of power generation scheduling based on the consumer's load profile. A multi-layered neural network with backpropagation learning algorithm is used to predict the required power generation to fulfill the consumer's demands. The proposed technique has been applied to a typical co-generation power plant of 4/spl times/8 MW rating. Test results indicates that the ANN model can automatically perform generator scheduling accurately.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122287101","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":"Power quality monitoring and analysis","authors":"C.J. Farhat","doi":"10.1109/EMPD.1998.705397","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705397","url":null,"abstract":"This paper describes the development of a power quality monitoring system capable of capturing and retrieving electrical quantities related to harmonics and distortion levels. A new algorithm to obtain synchronous samples when the input signal frequency changes is also presented. A fast and accurate measurement technique to measure the frequency of a sinusoid is also developed. Thus, a virtual energy meter with energy cost and maximum demand functions is implemented.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122323087","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 genetic algorithm based economic load dispatch solution for Eastern region of EGAT system having combined cycle and cogeneration plants","authors":"C. Achayuthakan, S. Srivastava","doi":"10.1109/EMPD.1998.705495","DOIUrl":"https://doi.org/10.1109/EMPD.1998.705495","url":null,"abstract":"This paper uses genetic algorithms (GAs) to solve the economic load dispatch (ELD) problem for the Eastern region of Thailand's utility (EGAT) power system. A piecewise model of cost characteristics is derived for the combined cycle and the cogeneration power plants in the system and utilized for the ELD formulation. Results of ELD are obtained by using a conventional GA and micro GA models. Both the models effectively solve the ELD problem and reduce the operating cost. However, the micro GA model offers faster convergence.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116021800","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":"Photovoltaics demonstration projects","authors":"C. M. Ping, A. Tan","doi":"10.1109/EMPD.1998.702763","DOIUrl":"https://doi.org/10.1109/EMPD.1998.702763","url":null,"abstract":"Among the many types of renewable energies, solar energy is considered promising as it is comparatively more evenly distributed geographically. A branch of solar energy research that has received worldwide attention is photovoltaics (PV). This paper studies the PV demonstration projects carried out in few countries. It aims to identify the common experience and conclusions drawn from the demonstration projects such as PV power system performance, PV cost effectiveness and grid interfacing problems. This paper also examines demonstration projects' achievements and limitations. The capacity of the projects analysed is limited to 20 kW per installation.","PeriodicalId":434526,"journal":{"name":"Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133355420","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}