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Control Scheme for Bidirectional DC/DC Converter in PV-battery System based on Active Disturbance Rejection Control 基于自抗扰控制的光伏电池系统双向DC/DC变换器控制方案
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758058
Bowen Wang, G. Verbič, Archie C. Chapman
{"title":"Control Scheme for Bidirectional DC/DC Converter in PV-battery System based on Active Disturbance Rejection Control","authors":"Bowen Wang, G. Verbič, Archie C. Chapman","doi":"10.1109/AUPEC.2018.8758058","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758058","url":null,"abstract":"The increasing penetration of non-synchronous renewable generation is changing power system frequency performance, including its inertial response. In this paper, we argue that PV-battery systems owned by end users can be used as a source of fast frequency response, which can mitigate the impact of the reduced inertia. To that end, we propose a control scheme for the bidirectional DC/DC converter that is used to connect the battery to the DC-link capacitor to provide the energy needed for fast frequency response. The proposed scheme, based on active disturbance rejection control, avoids the external switching signal during mode switching and rejects the “total disturbance” of the system, thereby improving the response speed and enhancing the stability of the system. Simulation results are provided to verify the feasibility of the proposed scheme.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124873932","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}
引用次数: 1
ANN Control for Damping Low-frequency Oscillation using Deep learning 利用深度学习抑制低频振荡的人工神经网络控制
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757923
Seong-Su Jhang, Heungjae Lee, Cha-Nyeon Kim, Chan-Ho Song, Wonkun Yu
{"title":"ANN Control for Damping Low-frequency Oscillation using Deep learning","authors":"Seong-Su Jhang, Heungjae Lee, Cha-Nyeon Kim, Chan-Ho Song, Wonkun Yu","doi":"10.1109/AUPEC.2018.8757923","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757923","url":null,"abstract":"If the Low-frequency oscillations in power systems are not properly damped out, they can cause critical effects, including wide-area outage. In 1996, Low-frequency oscillation incurred a wide-area outage and the economic, social loss from this phenomenon was estimated at 3 billion dollars. In order to damp out these oscillations, the PSS (Power System Stabilizer) is typically used. This, however, cannot damp out inter-area oscillations. Although research on damping inter-area oscillations is conducted to resolve the mentioned problems, the Lead Lag Controller for damping the oscillations used in FACTS (Flexible AC Transmission System) devices including VSC (Voltage Source Converter) has limitations in that it is a linear controller designed at a particular power system operating condition and there are some limitations incurred by the variable and unpredictable power system states, so that fixed controller parameters cannot properly damp out these oscillations. Meanwhile, the AI (Artificial Intelligence) techniques including supervised learning, unsupervised learning, and reinforcement learning are applied in various engineering fields in order to overcome a lot of nonlinear problems like those of power systems. In this paper, the ANN (Artificial Neural Network) controller, a kind of AI controller, was used to damp out inter-area oscillation at different power system operating conditions, after which the results were analyzed.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"464 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116186944","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}
引用次数: 5
Connection of Solar PV to LV Networks: Considerations for Maximum Penetration Level 太阳能光伏与低压电网的连接:考虑最大渗透水平
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757962
D. Chathurangi, U. Jayatunga, S. Perera, A. Agalgaonkar, T. Siyambalapitiya, A. Wickramasinghe
{"title":"Connection of Solar PV to LV Networks: Considerations for Maximum Penetration Level","authors":"D. Chathurangi, U. Jayatunga, S. Perera, A. Agalgaonkar, T. Siyambalapitiya, A. Wickramasinghe","doi":"10.1109/AUPEC.2018.8757962","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757962","url":null,"abstract":"Overcoming local limitations in distribution networks with high solar photovoltaic (PV) generation is a challenging issue, unless appropriate planning strategies and regulations are in place. Determination of solar PV hosting capacity of a distribution network can help in maintaining secure and healthy operation of the electricity grid without violating grid operational limits, specially during the peak solar power generation periods. This paper presents a feeder-based PV hosting capacity evaluation approach to determine a safe limit. It is proposed to use simplified calculations to establish the feeder hosting capacity in lieu of detailed network analyses, which increases complexity. Probabilistic nature of the proposed approach accounts for the randomness of solar PV presence within distribution networks. Monte Carlo Simulations (MCS) are performed to analyse maximum limits for solar PV integration using DIgSILENT PowerFactory as the simulation platform.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122496069","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}
引用次数: 13
Techno-economic assessments of ±750 V DC distribution networks ±750v直流配电网技术经济评价
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757914
Qing Fang, Wei Li, A. Abdolkhalig, Lu Yin, Yang Li, Lujie Chen, W. Pei, Liping Ju
{"title":"Techno-economic assessments of ±750 V DC distribution networks","authors":"Qing Fang, Wei Li, A. Abdolkhalig, Lu Yin, Yang Li, Lujie Chen, W. Pei, Liping Ju","doi":"10.1109/AUPEC.2018.8757914","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757914","url":null,"abstract":"In the evaluation of direct-circuit (DC) distribution networks, the technical and economic potentials are not yet been considered together. Plus, the economic evaluation of DC distribution are more focused on the initial cost. This paper applies the power network techno-economic assessments in DC distribution networks. The techno-economic assessments include performance assessments, cost assessments and revenue assessments. Moreover, a techo-economic assessment indicator is proposed as a uniform indicator covering all the three assessments. This paper has also proposed four network plans for Tongli ±750 V DC distribution network. The assessment method has found the most techno-economical plan, the ring network, for Tongli Energy Reform Town. The case study also validates the effectiveness of the proposed techno-economic assessment.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127507751","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}
引用次数: 0
Bi-directional TRIAC fault-protection technique for Z-source half-bridge converter-fed AC motor Drives z源半桥变换器供电交流电机驱动的双向可控硅故障保护技术
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757885
V. Sharma, Md. Jahangir Hossain, S. M. N. Ali, M. Kashif
{"title":"Bi-directional TRIAC fault-protection technique for Z-source half-bridge converter-fed AC motor Drives","authors":"V. Sharma, Md. Jahangir Hossain, S. M. N. Ali, M. Kashif","doi":"10.1109/AUPEC.2018.8757885","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757885","url":null,"abstract":"With higher demand for power electronic converters in single-phase drive systems, the concern for fault-tolerant schemes has risen in the past decade. Also, the demand for Impedance(Z)-source converters, facilitating single-stage power conversion with high voltage gain, has increased for induction motor drive systems. This paper presents an efficient two TRIAC fault-protection technique for the impedance-source half-bridge converter-fed induction motor drive system. The study is analyzed thorougly under pre-fault and post-fault conditions and a comparative analysis is presented in this paper. Simulation circuits with relevant harmonic spectra are assessed. From the detailed analysis, it is found that the occurrence of faults increases harmonic distortion to a high level, making the drive system ineligible for operation. The proposed fault-protection technique proves to be an efficient topology in maintaining continuous power flow during faults.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133530894","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}
引用次数: 2
Advanced Simulation Method for Evaluation of Interrupted Energy Assessment Rates in Distribution Systems 配电系统中断能量评估率的先进仿真方法
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758028
A. S. Nazmul Huda, R. Zivanovic
{"title":"Advanced Simulation Method for Evaluation of Interrupted Energy Assessment Rates in Distribution Systems","authors":"A. S. Nazmul Huda, R. Zivanovic","doi":"10.1109/AUPEC.2018.8758028","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758028","url":null,"abstract":"There is an increasing need in the electric utility industry to replace the conventional methods by using advanced approaches for improving the existing performance of various tools. This paper presents the results of electric distribution system Interrupted Energy Assessment Rate (IEAR) evaluation by a new computation approach based on Multilevel Monte Carlo simulation coupled with Milstein discretisation scheme. The aim of the proposed approach is to speed up the simulation of IEAR estimation. For validation, applications of the proposed method are implemented to some distribution systems. The output results are compared with those obtained from time-consuming basic sequential Monte Carlo simulation. The effects of the constant and time-varying load and cost models on the computation performance are determined.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"59 36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116799520","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}
引用次数: 0
Study on Core Loss Reduction in the Transformer of Isolated DC/DC Converter with Series L-C and Resonant L-C Shunt Filter 采用串联L-C和谐振L-C并联滤波器的隔离型DC/DC变换器变压器铁芯损耗降低研究
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757908
Ruiwen Zhang, Daming Zhang, R. Dutta
{"title":"Study on Core Loss Reduction in the Transformer of Isolated DC/DC Converter with Series L-C and Resonant L-C Shunt Filter","authors":"Ruiwen Zhang, Daming Zhang, R. Dutta","doi":"10.1109/AUPEC.2018.8757908","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757908","url":null,"abstract":"A medium-frequency transformer isolated DC/DC converter with series L-C and resonant L-C shunt filter is designed and simulated in this paper to eliminate high order harmonics of square wave and therefore reduce core loss of medium-frequency planar transformer. By adding an air-core series inductor with a series resonant capacitor and a resonant shunt branch consisting of another air-core inductor in series with the capacitor, specific order of harmonics can be entirely filtered without increasing extra copper loss from the inductors. At the same time the wide voltage ratio between output and input can be controlled at the first stage due to the passiveness of the inverter and rectifier. This proposed method can decrease around 5% of core loss of transformer compared with square wave and the circuit works with only 1.90% total harmonic distortion. In the meantime, it simplified the control and has the potential to operate at several hundred kilohertz to achieve compactness and miniaturization.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131036898","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}
引用次数: 2
A Study of Hard Switching Characteristics of GaN-based DC-DC Boost Power Converter using ASM-GaN Compact Model 基于ASM-GaN紧凑模型的gan型DC-DC升压功率变换器硬开关特性研究
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757974
Dhawal Mahajan, S. Albahrani, Hossein Eslahi, S. Khandelwal
{"title":"A Study of Hard Switching Characteristics of GaN-based DC-DC Boost Power Converter using ASM-GaN Compact Model","authors":"Dhawal Mahajan, S. Albahrani, Hossein Eslahi, S. Khandelwal","doi":"10.1109/AUPEC.2018.8757974","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757974","url":null,"abstract":"This paper studies the hard switching characteristics of a DC-DC Boost converter based on GaN device using ASM-GaN compact model. The accurate prediction of OFF state output capacitance Coss and I-V characteristics based on underlying Physics by ASM-GaN model results in expected prediction of the dynamic character of switching losses across the power transistor. These simulations can thus be used to predict the switching losses and furthermore help in the optimization of power converter design during the initial phase of design.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132231680","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}
引用次数: 2
Comparative Study of Optimal Sizing of Renewable Energy System and Triple Bottom Line (TBL) Analysis for a University in Australia 澳大利亚某大学可再生能源系统最优规模与三重底线分析的比较研究
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757965
N. Saiprasad, Akhtar Kalam, A. Zayegh
{"title":"Comparative Study of Optimal Sizing of Renewable Energy System and Triple Bottom Line (TBL) Analysis for a University in Australia","authors":"N. Saiprasad, Akhtar Kalam, A. Zayegh","doi":"10.1109/AUPEC.2018.8757965","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757965","url":null,"abstract":"Electricity grids are gradually evolving with the change in the energy mix. Renewable Energy is slowly penetrating through the power system. This has led to the need of mitigating greenhouse gas (GHG) emissions. The need for adopting renewable energy in the grid is rising even in Australia. This has been the motivation to study the integration of Renewable Energy Systems (RES) into a micro-grid in buildings like a university. In this study, the optimal sizing of Hybrid Renewable Energy Systems (HRES) has been carried out for a university building in Warrnambool, Australia. The results are compared between two software packages, HOMER, and iHOGA, for a specific scenario.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133126384","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}
引用次数: 0
Non-Isolated, ZCT, High Step-UP, DC-DC Converter for PV Systems 用于PV系统的非隔离，ZCT，高升压，DC-DC转换器
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757913
Danial Sadeghpour, A. Davoodi, Dhawal Mahajan, S. Albahrani, M. Zolghadri, S. M. Atarodi
{"title":"Non-Isolated, ZCT, High Step-UP, DC-DC Converter for PV Systems","authors":"Danial Sadeghpour, A. Davoodi, Dhawal Mahajan, S. Albahrani, M. Zolghadri, S. M. Atarodi","doi":"10.1109/AUPEC.2018.8757913","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757913","url":null,"abstract":"This paper demonstrates a new DC to DC gain cell —boost type—which satisfies the need for high voltage gain and efficiency as well as low complexity for renewable energy applications. This topology enjoys both pulse width modulation (PWM) and frequency variant method (FVM) in order to achieve desirable characteristic for applying in solar and wind plants. In this regard, this cell provides high efficiency, which resulted from using zero current transition (ZCT) to reduce switching losses, and high voltage gain as well as a low input current ripple. State planes are used to analyze the behavior of the cell. The main characteristics of this cell are illustrated using simulation results and are compared with other well-known structures. The comparison results show the proposed converter provides more gain at low duty cycle than most usual ones.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114562004","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}
引用次数: 0
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