{"title":"Primary Exploration in Main Framework of Post-Emergency Voltage Stability Control","authors":"Z. Chen, F. Xue, W. Du, H.F. Wang, G. Tang","doi":"10.1109/UPEC.2006.367508","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367508","url":null,"abstract":"This paper proposes the concept of power system post-emergency voltage control (PEVC) as a measure to defend important area in a power system against voltage collapse based on a framework of the third-category control and multi-agents system. The main feature of PEVC is to launch functions in real time according to unexpected power system events via information exchange. Both the dynamic co-ordination of continuous control and discrete control during voltage collapsing period are discussed. Main contribution of this paper is to provide a demo system to study PEVC and with the demonstration of this system, the importance of PEVC and feasibility of multi-agents framework are illustrated.","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132741174","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 Neuro Adaptive Control Strategy for Movable Power Source of Poroton Exchange Membrane Fuel Cell Using Wavelets","authors":"D. Arzaghi-Harris, M. Sedighizadeh","doi":"10.1109/UPEC.2006.367537","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367537","url":null,"abstract":"Movable power sources of proton exchange membrane fuel cells (PEMFC) are the important research done in the current fuel cells (FC) field. The PEMFC system control influences the cell performance greatly and it is a control system for industrial complex problems, due to the imprecision, uncertainty and partial truth and intrinsic nonlinear characteristics of PEMFCs. In this paper an adaptive PI control strategy using neural network adaptive Morlet wavelet for control is proposed. It is based on a single layer feed forward neural networks with hidden nodes of adaptive Morlet wavelet functions controller and an infinite impulse response (IIR) recurrent structure. The IIR is combined by cascading to the network to provide double local structure resulting in improving speed of learning. The proposed method is applied to a typical 1 KW PEMFC system and the results show the proposed method has more accuracy against to MLP (multi layer perceptron) method.","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133000568","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":"The Development of Non-Intrusive Techniques for Partial Discharge Detection on MV and EHV Switchgear","authors":"G. Dennis, M. Redfern, S. Pennock","doi":"10.1109/UPEC.2006.367593","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367593","url":null,"abstract":"There is a large population of ageing distribution plant and equipment installed on electricity companies' networks and in many industrial and commercial locations. In order to achieve effective utilisation of these assets and make sound decisions on maintenance strategies, asset refurbishment or replacement, it is necessary to have reliable information on the condition of existing plant. The trend to extend maintenance periods and optimising the availability of switchgear brings with it a need for interim non-intrusive diagnostic techniques to give confidence in the continuing safety and reliability of the equipment. This paper will look at developments in equipment available for partial discharge testing of switchgear operating in the 3.3 kV-400 kV range","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132169241","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":"Comparative Study and Optimal Design of PM Switching Flux Motors","authors":"W. Fei, J.X. Shen","doi":"10.1109/UPEC.2006.367568","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367568","url":null,"abstract":"A permanent magnet switching flux (PMSF) motor contains the advantages of both SR motor and PM motor. All 3-phase PMSF motors reported previously are used for low speed operation. For moderate or even high speed operation, two new structures, with 6 stator poles and 4 or 5 rotor poles, respectively, are proposed and comparatively studied in this paper. Basically, the 6/5 structure is superior to the 6/4 structure in the aspects of emf symmetry, torque capability and cogging torque. Although the 6/5 structure exhibits significant radial force, this problem can be overcome by skewing the rotor properly. Optimal design and experimental investigation of the motors are also presented","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132683088","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":"Mathematical Development, Investigation and Simulation of a New Quadratic Voltage Index","authors":"Hassan NOURI, A. Polycarpou, Li Zhenbiao","doi":"10.1109/UPEC.2006.367638","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367638","url":null,"abstract":"A new quadratic voltage index based on power flow equations is proposed in this paper. The index supervises the power quality of a system, through predicting voltage sags. The voltage sag is caused by an increase in reactive demand due to induction motor starting. The index has been tested for a range of X/R ratios and various loading levels. Mathematical and simulation results demonstrate the effectiveness and applicability of the proposed index for the applications","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115056070","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}
S. Aizam, B. C. Kok, N. Mariun, H. Hizam, N. Wahab
{"title":"Linear Feedback Controller for D-Statcom in DPG Fault Application","authors":"S. Aizam, B. C. Kok, N. Mariun, H. Hizam, N. Wahab","doi":"10.1109/UPEC.2006.367627","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367627","url":null,"abstract":"This paper presents the application of linear feedback controller on distribution static synchronous compensator (D-STATCOM) for mitigating double phase to ground (DPG) fault at the distribution system. The pole placement technique is applied by shifting the existing poles to the new poles locations for fast response compare to the conventional controller. This type of inverter control is very useful in D-STATCOM application which controls the inverter to inject the unbalanced current or voltage or both for mitigating the fault condition that occurs at the distribution system. The controller will give respond to the lines that are affected by the fault and restore the system to its normal conditions. The simulation and design of the controller is done using MATLAB software with Power Blockset Toolbox and SIMULINK","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116306626","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":"Electrical Network Studies for Industrial/Petrochemical Plants","authors":"C. Dall, K.S. Smith, R. Wilson","doi":"10.1109/UPEC.2006.367619","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367619","url":null,"abstract":"Extensive power system studies are required to confirm that the proposed electrical systems for new build industrial and petrochemical plants satisfy stringent design requirements. This paper outlines the load-flow, short-circuit, transient-stability and harmonic studies typically undertaken as part of the Front End Engineering Design (FEED) of such a system. These are illustrated using as an example an LNG liquefaction plant. Studies confirm the rating of key equipment in the system SLD, ensure that circuit breaker ratings are adequate and confirm that the dynamic performance of the system is satisfactory. Studies are repeated as the design process proceeds to ensure the delivery of a reliable power system","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131792163","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}
R. Withanage, N. Shammas, S. Tennakoorr, C. Oates, W. Crookes
{"title":"Igbt Parameter Extraction for the Hefner IGBT Model","authors":"R. Withanage, N. Shammas, S. Tennakoorr, C. Oates, W. Crookes","doi":"10.1109/UPEC.2006.367551","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367551","url":null,"abstract":"The insulated gate bipolar transistor (IGBT) is now widely used in many power electronics circuits. An accurate IGBT model is very important and useful to simulate these power electronics circuits to foresee the circuit behaviour and device behaviour before its implementation. Hefner IGBT model is one of the very good IGBT analytical models available for circuit simulation. This model requires IGBT parameters and those can be extracted experimentally. Two experiment set ups are needed and few different tests have to be carried out to extract IGBT parameters required for the Hefner model. In this paper, work carried out to extract eleven different parameters of 3.3 kV/1200 A IGBT is explained for the Hefner model","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133842714","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}
J. D. Schuddebeurs, P. Norman, C. Booth, G. Burt, J. Mcdonald
{"title":"Emerging Research Issues Regarding Integrated-Full-Electric-Propulsion","authors":"J. D. Schuddebeurs, P. Norman, C. Booth, G. Burt, J. Mcdonald","doi":"10.1109/UPEC.2006.367563","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367563","url":null,"abstract":"Integrated full electric propulsion (IFEP) currently provides advantages for both the commercial and naval shipping industries. However, in order to realise the full potential of this concept research into all aspects of IFEP system design and operation is necessary, particularly for naval applications where the operational requirements are more stringent and the need to mitigate the risk associated with the new technology is greater. This paper reviews current IFEP research programmes worldwide and identifies the core research issues under consideration. IFEP programmes such as the Norwegian commercial vessel-orientated EEAES programme and the UK-based ESTD, which is targeted at military applications, are discussed in more detail. This paper maintains that this existing IFEP research is creating further opportunities for research into the system-level dynamic behaviour and argues that such research is necessary to de-risk IFEP design. A simulation case study demonstrating the adverse effects on a marine electrical power system as a result of dynamic loading on the ship's propulsion system is also is included in the paper to support this argument","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134014601","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":"Design and Construction of Induction Motor Thermal Monitoring System","authors":"H. Hafezi, A. Jalilian","doi":"10.1109/UPEC.2006.367564","DOIUrl":"https://doi.org/10.1109/UPEC.2006.367564","url":null,"abstract":"Rotor and stator temperature rise in induction motors is considered to be a major cause of motor insulation degradation and motor failures. In most cases, it is necessary to monitor rotor bars and stator windings to make sure that their temperature remains below the allowable limits. In this paper, design and implementation of a temperature measuring system suitable for three-phase induction motors is described. The system contains two parts, rotating and stationary. In this work, digital temperature sensors are installed on rotor and stator windings. The data from the thermal sensors on the rotor is digitized using electronic parts and transmitted via light through IR receiver and transmitter between the rotor and the stator. A data acquisition system is employed for capturing data from electronic parts to PC for further analysis and monitoring purposes. Implementation of the monitoring system on a 5.5 kW 3-phase squirrel cage induction motor is described. Temperature rise in rotor bars and stator windings are monitored under no load and locked rotor conditions. It is shown that the system is capable for thermal monitoring of the test motor under various supply and load conditions","PeriodicalId":184186,"journal":{"name":"Proceedings of the 41st International Universities Power Engineering Conference","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133183129","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}