{"title":"Modified controls for DFIG under unbalanced voltage dip for reduction of current harmonic using PI-F plus Resonant controller","authors":"Hai Nguyen-Thanh, Dũng Quốc Phan, Cuong Vo-Viet","doi":"10.1109/ICSET.2016.7811782","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811782","url":null,"abstract":"This paper presents modified Stator Flux Oriented Control (SFOC) for Doubly Fed Induction Generator (DFIG) in wind turbines to reduce torque pulsation during unbalanced voltage dips, and current waveform is also improved with the decreasing of harmonics. The proposed schemes utilize multiple PI with Fuzzy plus Resonant controllers (PI-F+R) to obtain commanded rotor currents and also introduce extra commanded values for rotor current; as well, Notch filters and Sequence Components Controller (SCC) are used to eliminate the high order harmonic components. The resonant controller is tuned to twice the network frequency (2®s) and designed mitigate against the power oscillations and torque pulsations in a DFIG due to network voltage unbalance conditions. The designed system consists of a wound-rotor induction generator and back-to-back power-electronic converters connected to both rotor and grid sides. Wherein, the modification is applies to the control of Rotor Side Converter (RSC). Simulations in Matlab/Simulink illustrate the improvement of current waveform. Comparisons of the simulation results with SFOC using traditional PI traditional and a previously suggested modification of SFOC using PI-F+R for operation under unbalanced voltage dip are provided to evaluate the newly proposed methods.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","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":"121244960","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 comparison study of MVDC and MVAC for deployment of distributed wind generations","authors":"Thai-Thanh Nguyen, H. Yoo, Hak-Man Kim","doi":"10.1109/ICSET.2016.7811770","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811770","url":null,"abstract":"Direct current (DC) connection of the large-scale wind generations with high voltage levels and long distance has been widely developed. Meanwhile, medium voltage direct current (MVDC) can also offer similar benefits compared to high voltage direct current connection of wind generations. This study presents a comparison study of MVDC and MVAC for the integration of distributed wind generations. The MVDC system is adopted from the IEEE 15-bus radial distribution system. The wind generators based on the doubly fed induction generators (DFIG) and those control schemes for the connection with MVDC grid are described. Several test cases such as loss of wind generator, loss of diesel generator, or fault are performed. Simulation model is implemented in MATLAB / Simulink environment.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","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":"129388265","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":"Online ensemble learning for security assessment in PMU based power system","authors":"H. T. Nguyen, L. Le","doi":"10.1109/ICSET.2016.7811815","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811815","url":null,"abstract":"This paper presents an online Adaboost algorithm for ensemble of support vector machines (SVM) for power system security assessment utilizing online measurement data obtained from Phasor Measurement Units (PMUs). Our proposed learning scheme consists of a strong learner and multiple weak learners. The weak learners are linear SVMs which are easy to implement and incrementally updated with low computation complexity. The strong learner compensates for inevitable classification errors of linear SVMs by using the boosting approach. Since the data is unbalanced, i.e., the number unsecured scenarios is much smaller than the number of secured scenarios, conventional online Adaboost may result in the high misdetection rate. Hence, we propose an online Adaboost algorithm that can adapt itself to the unbalanced online data. In addition, efficient tradeoff between misdetection (i.e., failing to detect unsecured samples) and false alarm (i.e., classifying secured samples wrongly) can be achieved by tuning a design parameter. Numerical results show that our proposed scheme can achieve high security assessment efficiency and accuracy, which is potential for the advanced security monitoring application in future smartgrid.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"35 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":"122741871","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":"Photovoltaic power predictions using modified adaptive response rate exponential smoothing method","authors":"P. Lim, F. Wong","doi":"10.1109/ICSET.2016.7811812","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811812","url":null,"abstract":"Precipitous depletion of natural resources and exponential population growth are stimulating the rapid development of electric power industries. Increased awareness of the global community on the benefits of renewable energy is driving the conventional power grid systems to a new paradigm. Electric power grids are evolving rapidly where incorporation of higher proportion of photovoltaic power generation is observed. The modern grid structure requires contemporary energy management systems for better quality of services. Therefore, prediction is essential for effective energy management and solar energy trading. This paper proposed a Modified Adaptive Response-rate Exponential Smoothing method for predicting photovoltaic power generation for a location near the equator with tropical climate. Four other time series models were used to forecast the photovoltaic power generation for the same location and comparison between the proposed models with those time series models were performed. The results show that the proposed model demonstrates improved performance than the other time series models selected for this study.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"78 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":"125624915","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":"Fault detection on the transmission lines using the time domain reflectometry method basing on the analysis of reflected waveform","authors":"L. Hoai, An Duong","doi":"10.1109/ICSET.2016.7811789","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811789","url":null,"abstract":"The faults can happen to transmission lines at any time, any places and caused by different reasons. An accurate and fast solution to detect, locate and isolate the faults will improve the quality of the power systems' performance. The time domain reflectometry (TDR) method basing on the analysis of reflected waveforms on the transmission lines to detect the faults and estimate the fault resistance and the load characteristics has many advantages, especially when combining with the wavelet decomposition algorithm. This paper presents the numerical results using Matlab-Simulink models to show the high quality of the proposed method.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","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":"129525300","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}
Vu Minh Phap, N. Yamamura, M. Ishida, J. Hirai, N. Nga
{"title":"Design of novel grid-tied solar — Wind hybrid power plant using photovoltaic cell emulating system","authors":"Vu Minh Phap, N. Yamamura, M. Ishida, J. Hirai, N. Nga","doi":"10.1109/ICSET.2016.7811779","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811779","url":null,"abstract":"The utilization rate of the power conditioner in the grid-tied solar power system is low because the operation of photovoltaic (PV) cell depends on the sunlight. Adding the small scale wind power generating system to the existing solar power system can increase the utilization rate of the power conditioner. In this paper, we propose a novel design method by which the small scale wind power generating system can connect to the grid-tied power conditioner of solar panel and hybrid power system can transmit power to the utility grid.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","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":"129864057","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":"Enabling technologies for sustainable all — Electric hybrid vessels (Invited paper)","authors":"Ricky Chan, L. Chua, T. Tjahjowidodo","doi":"10.1109/ICSET.2016.7811818","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811818","url":null,"abstract":"The global marine fleets have been reported to consume approximately 300 million tons of fuel annually and contribute 2.8% of global greenhouse gases emissions (GHG). It is widely projected that the numbers will continue to grow, predominantly driven by the increase in global trades and energy demand from emerging countries. In recent years, enabling technologies, such as hybrid electrical propulsion system and advanced power management strategies, have been developed and introduced to the marine industries not only to reduce fuel consumption, but also to adhere to the increasingly stringent regulations on emissions by the International Maritime Organization (IMO). Such technologies are especially critical for vessels that operate in the water near urban areas, such as ferries and tugs, which may contribute up to 15% of the global marine fleet fuel consumption. In this paper, the design and integration of hybrid electrical propulsion systems, with the use of modern DC distribution and energy storage systems, will be discussed and compared to conventional systems. The benefits of hybrid all-electric power and propulsion system in terms of fuel and energy consumption, emission reduction, performance, as well as system redundancy are presented in this paper.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"13 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":"128316650","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}
Joymala Moirangthem, K. R. Krishnanand, S. K. Panda, G. Amaratunga
{"title":"GIS integrated automation of a near real-time power-flow service for electrical grids","authors":"Joymala Moirangthem, K. R. Krishnanand, S. K. Panda, G. Amaratunga","doi":"10.1109/ICSET.2016.7811755","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811755","url":null,"abstract":"The future of high renewable energy penetration and the consequent power variability produces the need for fast power-flow computations for the useful management of power. Such management must have least requirement for human intervention, achievable through fast and reliable automations. This paper presents Geographic Information System (GIS) integrated automation of a non-iterative power-flow method known as Holomorphic Embedded Power Flow (HEPF) so as to produce a power-flow service over a communication network. Since HEPF reliably guarantees the solution and reaches it very fast through constructing the solution, it is a suitable candidate for near real-time updates of the electrical states of a power system. A four-bus system is first used to explain the holomorphic formulations. Then the results of a 12-bus test system are compared with that of commercial PowerWorld Simulator for corroboration. The results of different loading conditions demonstrate the usefulness of the power-flow service which is continuously provided to a grid which has rapid changes in power.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"12 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":"125314867","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":"An adaptive control of hybrid battery-supercapacitor storage for integration of wind and solar","authors":"D. N. Huu","doi":"10.1109/ICSET.2016.7811774","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811774","url":null,"abstract":"Integration of wind and solar within dc microgrids into buildings is presented. First, a cache control method is applied to utilize a hybrid energy storage which combines diverse but complementary storage technologies. Second, an adaptive droop scheme is proposed to provide coordination control of a battery in real-time and long-term operation. Compared with other existing droop controls, it is distinguished in that the adaptive droop is proposed to force real-time state of charge of battery to track on the optimized scheduled SOC in long-term. Several simulations are performed to realize the presented method.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"21 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":"121335184","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":"Analysis and control design of transformerless high gain, high efficient buck-boost DC-DC converters","authors":"Tran Anh Vu, Dao Phuong Nam, Pham-Thi Huong","doi":"10.1109/ICSET.2016.7811759","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811759","url":null,"abstract":"This work develops a systematic state-space approach to modeling of an improved buck-boost DC-DC converters. The averaged model of the converters is analyzed. Based on this model, a control law is design to keep the output voltage stable when the input is unstable. The simulation results are presented to confirm the capability of the converter to keep the output voltage stable. The proposed converter is suitable for a wide application which requires high step-up DC-DC converters and output stable such as DC micro-grids, solar electrical energy or electric vehicles.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"277 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":"122468252","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}