Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951555
A. S. Mohamad, N. Mariun
Cascaded multilevel inverters are widely used in various fields, from oil and gas, power supply installations, to power quality devices. While there are many advantages of the cascaded multilevel inverter such as low voltage stress for each switching device and higher power quality, the main downside for this type of inverter is relatively large number of switching device it needs in an installation. In order to reduce total harmonics distortion (THD) of the output voltage waveform, the number of output voltage level need to be increased, hence the higher number of switching devices. This subsequently increases the installation cost, inverter circuit size and power losses — in the form of heat and voltage losses in the inverter circuit. In this paper a new improved cascaded multilevel inverter topology with a minimum number of switching devices is discussed. The proposed topology needs to turn on only two switching devices at any operation time for any output voltage level configurations. The switches in the proposed topology also have low duty cycle and almost balanced cells duty cycle. The cascaded multilevel inverter topology validity is verified by the Matlab Simulink simulation of a prototype single phase 41-level inverter.
{"title":"Simulation analysis of an improved cascaded multilevel inverter topology","authors":"A. S. Mohamad, N. Mariun","doi":"10.1109/PECON.2016.7951555","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951555","url":null,"abstract":"Cascaded multilevel inverters are widely used in various fields, from oil and gas, power supply installations, to power quality devices. While there are many advantages of the cascaded multilevel inverter such as low voltage stress for each switching device and higher power quality, the main downside for this type of inverter is relatively large number of switching device it needs in an installation. In order to reduce total harmonics distortion (THD) of the output voltage waveform, the number of output voltage level need to be increased, hence the higher number of switching devices. This subsequently increases the installation cost, inverter circuit size and power losses — in the form of heat and voltage losses in the inverter circuit. In this paper a new improved cascaded multilevel inverter topology with a minimum number of switching devices is discussed. The proposed topology needs to turn on only two switching devices at any operation time for any output voltage level configurations. The switches in the proposed topology also have low duty cycle and almost balanced cells duty cycle. The cascaded multilevel inverter topology validity is verified by the Matlab Simulink simulation of a prototype single phase 41-level inverter.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114362328","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951660
N. S. F. M. Murad, M. Kamarudin, S. M. Rozali, M. Hairi
This paper proposes a three term PID controller to achieve optimum tip-speed ratio of a variable speed fixed pitch two-mass wind turbine system. The main advantage of the method is the functional simplicity and the robust performance in a wide range of operating condition. The objective is achieved by maintaining optimum speed of the rotor via adjusting the restoring generator torque. Hence, PID controller is formulated and employed into the generator side of wind turbine system to achieve the asymptotic tracking of the rotor speed. To validate the effectiveness of the proposed method, a simulation in MATLAB/SIMULINK® is carried out. The result shows that the speed tracking can be achieved by using PID. However, the speed response shows inadequate control performance with less efficacy as the closed-loop system incur large initial speed overshoot. This phenomena shows the shortcomings of conventional PID and hence, open up new research awareness on solving this problem.
{"title":"Achieving optimum tip-speed-ratio of a two-mass wind turbine system","authors":"N. S. F. M. Murad, M. Kamarudin, S. M. Rozali, M. Hairi","doi":"10.1109/PECON.2016.7951660","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951660","url":null,"abstract":"This paper proposes a three term PID controller to achieve optimum tip-speed ratio of a variable speed fixed pitch two-mass wind turbine system. The main advantage of the method is the functional simplicity and the robust performance in a wide range of operating condition. The objective is achieved by maintaining optimum speed of the rotor via adjusting the restoring generator torque. Hence, PID controller is formulated and employed into the generator side of wind turbine system to achieve the asymptotic tracking of the rotor speed. To validate the effectiveness of the proposed method, a simulation in MATLAB/SIMULINK® is carried out. The result shows that the speed tracking can be achieved by using PID. However, the speed response shows inadequate control performance with less efficacy as the closed-loop system incur large initial speed overshoot. This phenomena shows the shortcomings of conventional PID and hence, open up new research awareness on solving this problem.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123390089","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951615
J. Ali, M. A. Hannan, A. Mohamed
This paper presents an improve proportional-integral-derivative (PID) controller design technique for controlling a three-phase induction motor (TIM) speed drive using quantum lightning search algorithm (QLSA). This proposed controller avoids the exhaustive conventional trial- and-error procedure for obtaining PID parameters. Objective function using in the proposed controller is mean absolute error (MAE) to enhance the TIM speed performance under sudden change of the speed and load conditions. The QLSA is used to improve two controller system PID and PI controllers in the TIM drive. Moreover, the QLSA algorithm comperes with three optimization algorithms, namely, lightning search algorithm (LSA), the backtracking search algorithm (BSA), the particle swarm optimization (PSO). Designed and validated the simulation model by using a MATLAB/Simulink environment. Results show that the QLSA-based PID and PI speed controller is achieved better results than the other optimization controllers through reduce of damping capability, enhance the transient response, minimize the MAE, root mean square error (RMSE) and standard division (SD) of the speed response.
{"title":"Optimized speed controller for induction motor drive using quantum lightning search algorithm","authors":"J. Ali, M. A. Hannan, A. Mohamed","doi":"10.1109/PECON.2016.7951615","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951615","url":null,"abstract":"This paper presents an improve proportional-integral-derivative (PID) controller design technique for controlling a three-phase induction motor (TIM) speed drive using quantum lightning search algorithm (QLSA). This proposed controller avoids the exhaustive conventional trial- and-error procedure for obtaining PID parameters. Objective function using in the proposed controller is mean absolute error (MAE) to enhance the TIM speed performance under sudden change of the speed and load conditions. The QLSA is used to improve two controller system PID and PI controllers in the TIM drive. Moreover, the QLSA algorithm comperes with three optimization algorithms, namely, lightning search algorithm (LSA), the backtracking search algorithm (BSA), the particle swarm optimization (PSO). Designed and validated the simulation model by using a MATLAB/Simulink environment. Results show that the QLSA-based PID and PI speed controller is achieved better results than the other optimization controllers through reduce of damping capability, enhance the transient response, minimize the MAE, root mean square error (RMSE) and standard division (SD) of the speed response.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126473669","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951540
W. Tan, M. Abdullah, M. Shaaban
Variability and uncertainty associated with the growth of variable renewable generation, particularly wind power, introduce significant challenges to grid system operators. This paper proposes a day-ahead chance constraint generation scheduling (CCGS) approach, considering variable wind generation and energy storage. Cycling ramp cost is introduced in this paper as a penalty in the objective cost function, to model the operation and maintenance (O&M) costs, which leads to the reduction of the wear and tear of the generator. The cycling of conventional generation as well as the dispatch of energy storage is utilized to enhance the load following and flexible ramping support capabilities; thus mitigate the impact of net load ramps. The chance constraint is converted into an equivalent mixed-integer linear programming (MILP) expression by using the Projected Disjunctive Reformulation (PDR), with the aim to maintain compatibility with commercially state-of-the-art optimization solvers. Results show the merits of the proposed scheduling model in controlling the fluctuating characteristics due to high wind penetration levels. The impact of introducing cycling ramp cost and the benefits of energy storage in reducing the respective cost, are also investigated in the test cases.
{"title":"A day-ahead generation scheduling with energy storage considering cycling ramp costs","authors":"W. Tan, M. Abdullah, M. Shaaban","doi":"10.1109/PECON.2016.7951540","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951540","url":null,"abstract":"Variability and uncertainty associated with the growth of variable renewable generation, particularly wind power, introduce significant challenges to grid system operators. This paper proposes a day-ahead chance constraint generation scheduling (CCGS) approach, considering variable wind generation and energy storage. Cycling ramp cost is introduced in this paper as a penalty in the objective cost function, to model the operation and maintenance (O&M) costs, which leads to the reduction of the wear and tear of the generator. The cycling of conventional generation as well as the dispatch of energy storage is utilized to enhance the load following and flexible ramping support capabilities; thus mitigate the impact of net load ramps. The chance constraint is converted into an equivalent mixed-integer linear programming (MILP) expression by using the Projected Disjunctive Reformulation (PDR), with the aim to maintain compatibility with commercially state-of-the-art optimization solvers. Results show the merits of the proposed scheduling model in controlling the fluctuating characteristics due to high wind penetration levels. The impact of introducing cycling ramp cost and the benefits of energy storage in reducing the respective cost, are also investigated in the test cases.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125546750","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951576
N. N. Ali, A. Aman, H. Zainuddin, S. Ghani, J. Razak
Silicone Rubber (SIR) are steadily gaining acceptance in the high voltage insulation application due to a greater insulation properties and light weight attribute, which are suitable in substituting the conventional glass and ceramic insulator. There are still large research efforts conducted all around the world in order to improve the insulating behavior and sustainability of SIR. However, the investigation on the effects of materials formulation and processing parameters towards the insulation performances of SIR are still scarce. In this work, materials and processing parameters of Alumina Trihydrate (ATH) (10–50pphr), Dicumyl Peroxide (0.5–1.5pphr), speed of mixer (40–70 rpm) and mixing period (5–10 mins) were varied accordingly as to evaluates their effects towards dependent response of surface resistivity. The inter-correlation and contribution between all four parameters with response studied and optimization of it were established by using the statistical Design of Experiment (DOE) of two level full factorial at 24 level using Design Expert v10 software. The model analysis is finalized with R2 value of 88.72% together with a suggested optimized solution of A: ATH=50 pphr, B: DCP = 0.50 pphr, C: Mixing Speed = 70 rpm and D: Mixing Time = 10 mins with overall 0.959 of desirability value. In overall, this study emphasizes that the materials and processing factor had a major impact in influencing the surface resistivity of SIR for high voltage insulation purposes.
{"title":"Two level factorial and optimization studies of Silicon Rubber surface resistivity for high voltage insulation — effects of raw materials and internal mixer processing parameters","authors":"N. N. Ali, A. Aman, H. Zainuddin, S. Ghani, J. Razak","doi":"10.1109/PECON.2016.7951576","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951576","url":null,"abstract":"Silicone Rubber (SIR) are steadily gaining acceptance in the high voltage insulation application due to a greater insulation properties and light weight attribute, which are suitable in substituting the conventional glass and ceramic insulator. There are still large research efforts conducted all around the world in order to improve the insulating behavior and sustainability of SIR. However, the investigation on the effects of materials formulation and processing parameters towards the insulation performances of SIR are still scarce. In this work, materials and processing parameters of Alumina Trihydrate (ATH) (10–50pphr), Dicumyl Peroxide (0.5–1.5pphr), speed of mixer (40–70 rpm) and mixing period (5–10 mins) were varied accordingly as to evaluates their effects towards dependent response of surface resistivity. The inter-correlation and contribution between all four parameters with response studied and optimization of it were established by using the statistical Design of Experiment (DOE) of two level full factorial at 24 level using Design Expert v10 software. The model analysis is finalized with R2 value of 88.72% together with a suggested optimized solution of A: ATH=50 pphr, B: DCP = 0.50 pphr, C: Mixing Speed = 70 rpm and D: Mixing Time = 10 mins with overall 0.959 of desirability value. In overall, this study emphasizes that the materials and processing factor had a major impact in influencing the surface resistivity of SIR for high voltage insulation purposes.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124680132","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951551
M. Azri, N. H. A. Khanipah, Muhammad Afif Mat Nasir, Z. Ibrahim, Azrita Alias, N. Rahim
This paper presents a Hardware in the Loop (HIL) simulation technique for Multi Device Interleaved Boost Converter. The main advantage of this technique is to make sure the converter could operate in right way, even if the real time experimental set-up is not completely available. After a successful HIL simulation, it would be easy to continue or implement the system in real hardware. This paper presents the process of designing the MDIBC by using MATLAB/Simulink software which can simulate and interface with DSP tool kit. The MDIBC is chosen because of its advantages of reducing the passive component's size, as well as reduction in input ripple current which could lead to non-linear source (fuel cell) damages. This converter also has been compared with a conventional boost converter (BC) to validate the efficiency.
{"title":"Hardware in the Loop (HIL) simulation of Multi Device Interleaved Boost Converter (MDIBC)","authors":"M. Azri, N. H. A. Khanipah, Muhammad Afif Mat Nasir, Z. Ibrahim, Azrita Alias, N. Rahim","doi":"10.1109/PECON.2016.7951551","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951551","url":null,"abstract":"This paper presents a Hardware in the Loop (HIL) simulation technique for Multi Device Interleaved Boost Converter. The main advantage of this technique is to make sure the converter could operate in right way, even if the real time experimental set-up is not completely available. After a successful HIL simulation, it would be easy to continue or implement the system in real hardware. This paper presents the process of designing the MDIBC by using MATLAB/Simulink software which can simulate and interface with DSP tool kit. The MDIBC is chosen because of its advantages of reducing the passive component's size, as well as reduction in input ripple current which could lead to non-linear source (fuel cell) damages. This converter also has been compared with a conventional boost converter (BC) to validate the efficiency.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"52 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120897905","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951622
P. Ling, D. Ishak, T. Tiang
Cogging torque is a common design issue in Permanent Magnet Synchronous Machines (PMSMs). Altering the magnet shape is one of the solutions in reducing the cogging torque. This paper addresses the variation in the rotor magnet pole arc which would affect the cogging torque of the external rotor permanent magnet synchronous motor (ERPMSM). Analytical calculations to design a three-phase, 12slot/8pole (12s/8p) ERPMSM with consideration of major parameters and material properties are presented. A two-dimensional (2D) layout of the ERPMSM is constructed and analysed. The variation in reducing the magnet pole arc is modelled and simulated in a commercial finite element software i.e. OPERA 2D, to illustrate its effects on the cogging torque generated in the machine. After which, the paper describes the possible reasons behind the trend of the changing cogging torque exhibited by variation of the magnet pole arc, and its effects on the phase-back electromotive force (EMF) produced by the ERPMSM.
{"title":"Influence of magnet pole arc variation on the performance of external rotor permanent magnet synchronous machine based on finite element analysis","authors":"P. Ling, D. Ishak, T. Tiang","doi":"10.1109/PECON.2016.7951622","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951622","url":null,"abstract":"Cogging torque is a common design issue in Permanent Magnet Synchronous Machines (PMSMs). Altering the magnet shape is one of the solutions in reducing the cogging torque. This paper addresses the variation in the rotor magnet pole arc which would affect the cogging torque of the external rotor permanent magnet synchronous motor (ERPMSM). Analytical calculations to design a three-phase, 12slot/8pole (12s/8p) ERPMSM with consideration of major parameters and material properties are presented. A two-dimensional (2D) layout of the ERPMSM is constructed and analysed. The variation in reducing the magnet pole arc is modelled and simulated in a commercial finite element software i.e. OPERA 2D, to illustrate its effects on the cogging torque generated in the machine. After which, the paper describes the possible reasons behind the trend of the changing cogging torque exhibited by variation of the magnet pole arc, and its effects on the phase-back electromotive force (EMF) produced by the ERPMSM.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132847714","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951469
M. Moghaddam, Sanaz Mahmoudi, B. Alizadeh
Transmission expansion planning should be performed according to the load growth to encourage and facilitate competition in the electricity markets, and meet the environmental, political, economic and technical constraints, appropriately. This paper presents a new framework for the stochastic short-term Dynamic Transmission Expansion Planning (DTEP) problem taking into account the uncertainties related to the load demand, output power of wind farms (OPWFs), and Local Marginal Prices (LMPs). Besides, methods to evaluate the load demand and OPWFs uncertainties can affect the quality of expansion plans. Therefore, in this paper, two different methods, Monte Carlo simulation (MCS) and Taguchi's Orthogonal Array Testing (TOAT), are used to model these uncertainties. The comparison of the results given by the proposed DTEP structure on the Garver 6-bus test system demonstrates the higher efficiency of MCS plans than TOAT.
{"title":"Short-term dynamic transmission expansion planning considering wind farms' uncertainty","authors":"M. Moghaddam, Sanaz Mahmoudi, B. Alizadeh","doi":"10.1109/PECON.2016.7951469","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951469","url":null,"abstract":"Transmission expansion planning should be performed according to the load growth to encourage and facilitate competition in the electricity markets, and meet the environmental, political, economic and technical constraints, appropriately. This paper presents a new framework for the stochastic short-term Dynamic Transmission Expansion Planning (DTEP) problem taking into account the uncertainties related to the load demand, output power of wind farms (OPWFs), and Local Marginal Prices (LMPs). Besides, methods to evaluate the load demand and OPWFs uncertainties can affect the quality of expansion plans. Therefore, in this paper, two different methods, Monte Carlo simulation (MCS) and Taguchi's Orthogonal Array Testing (TOAT), are used to model these uncertainties. The comparison of the results given by the proposed DTEP structure on the Garver 6-bus test system demonstrates the higher efficiency of MCS plans than TOAT.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130746105","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951542
M. Moghaddam, Mahrou Pouladkhay
Distribution Network Expansion Planning (DNEP) is the most important factor in the demand growth in the distribution system. Planning involves the best installation of new facilities such as allocation of new feeders, new substations, new routes of new feeders to substations and tie-line routes to other feeders. The Monte Carlo Simulation (MCS) is used for this purpose. In this paper, a new modification method is proposed under load and price uncertainties to obtain the best expansion scheme considering different candidate. Load duration curve is used to change annual load changes status. The objective function of proposed model is minimization of the total investment, operation and maintenance, line loss and reliability costs. Moreover, it is investigated voltage profile improvement and reduction of power losses during planning horizon. The proposed planning structure is optimized by using the Binary Particle Swarm Optimization (BPSO) technique. Finally the proposed method is evaluated on test network and simulation results prove the ability and effectiveness of the proposed planning method to deal with uncertainty and operating investment process.
{"title":"Short-term distribution network expansion planning considering load and price uncertainties","authors":"M. Moghaddam, Mahrou Pouladkhay","doi":"10.1109/PECON.2016.7951542","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951542","url":null,"abstract":"Distribution Network Expansion Planning (DNEP) is the most important factor in the demand growth in the distribution system. Planning involves the best installation of new facilities such as allocation of new feeders, new substations, new routes of new feeders to substations and tie-line routes to other feeders. The Monte Carlo Simulation (MCS) is used for this purpose. In this paper, a new modification method is proposed under load and price uncertainties to obtain the best expansion scheme considering different candidate. Load duration curve is used to change annual load changes status. The objective function of proposed model is minimization of the total investment, operation and maintenance, line loss and reliability costs. Moreover, it is investigated voltage profile improvement and reduction of power losses during planning horizon. The proposed planning structure is optimized by using the Binary Particle Swarm Optimization (BPSO) technique. Finally the proposed method is evaluated on test network and simulation results prove the ability and effectiveness of the proposed planning method to deal with uncertainty and operating investment process.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132173702","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}
Pub Date : 2016-11-01DOI: 10.1109/PECON.2016.7951670
B. Jing, Swee Leong Kok
Piezoelectric cantilever as a resonant structure can be used both as sensor as well as energy harvester and hence can be integrated as a self-powered system. When excited at a frequency near to its resonant, maximum electrical power is generated, therefore it functions as a micro-power generator. When excited to a frequency which is far from the range of the resonant, the voltage signal generated is comparatively linear at the non-resonant region and proportional to the acceleration level, therefore in this region of frequency it functions as a sensor. This paper demonstrates the application of an array of piezoelectric cantilevers to harvest energy from a broadband vibration source and powering up a op-amp to amplify the signal obtained from a similar but shorter piezoelectric cantilever. The frequency response of the piezoelectric cantilever is characterized by applying different proof masses and altering the cantilever length with the intention to alter the resonant and non-resonant frequency region of the piezoelectric cantilevers into same operating frequency range of 200 Hz to 300 Hz. It is noticed that the self-powered accelerometer works well at an acceleration level above 0.8-g.
{"title":"Demonstration of piezoelectric cantilever arrays for broadband vibration harvesting","authors":"B. Jing, Swee Leong Kok","doi":"10.1109/PECON.2016.7951670","DOIUrl":"https://doi.org/10.1109/PECON.2016.7951670","url":null,"abstract":"Piezoelectric cantilever as a resonant structure can be used both as sensor as well as energy harvester and hence can be integrated as a self-powered system. When excited at a frequency near to its resonant, maximum electrical power is generated, therefore it functions as a micro-power generator. When excited to a frequency which is far from the range of the resonant, the voltage signal generated is comparatively linear at the non-resonant region and proportional to the acceleration level, therefore in this region of frequency it functions as a sensor. This paper demonstrates the application of an array of piezoelectric cantilevers to harvest energy from a broadband vibration source and powering up a op-amp to amplify the signal obtained from a similar but shorter piezoelectric cantilever. The frequency response of the piezoelectric cantilever is characterized by applying different proof masses and altering the cantilever length with the intention to alter the resonant and non-resonant frequency region of the piezoelectric cantilevers into same operating frequency range of 200 Hz to 300 Hz. It is noticed that the self-powered accelerometer works well at an acceleration level above 0.8-g.","PeriodicalId":259969,"journal":{"name":"2016 IEEE International Conference on Power and Energy (PECon)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129472204","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}
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