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Bus Voltage Signalling Based Coordinated Control of DC Microgrids 基于母线电压信号的直流微电网协调控制
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757884
D. Jayamaha, N. Lidula, A. Rajapakse
{"title":"Bus Voltage Signalling Based Coordinated Control of DC Microgrids","authors":"D. Jayamaha, N. Lidula, A. Rajapakse","doi":"10.1109/AUPEC.2018.8757884","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757884","url":null,"abstract":"Control, coordination and performance of a DC microgrid under different modes of operation, are investigated in this paper. The DC microgrid under consideration consists of grid connected converter, Energy storage system (ESS), Solar PV plant and several DC loads. Decentralized control strategy based on coordinated control of grid converter, ESS, solar PV plant and loads is proposed. Energy management scheme for ESS based on state of charge level and load management with load shedding, is proposed to ensure the stability and efficient operation of the DC microgrid. PSCAD/EMTDC simulations are presented to evaluate the operation performance of the proposed control scheme. The dynamic performance of the system under different operating conditions such as, operation in grid connected and islanded mode, variations in solar PV generation and load, AC and DC faults are evaluated.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"27 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":"125319432","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
A Smart Supervisory System for Distribution Transformers 配电变压器智能监控系统
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757994
Michael Bunn, Boon-Chong Seet, C. Baguley, B. Das
{"title":"A Smart Supervisory System for Distribution Transformers","authors":"Michael Bunn, Boon-Chong Seet, C. Baguley, B. Das","doi":"10.1109/AUPEC.2018.8757994","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757994","url":null,"abstract":"Traditionally the determination of the health and life of a distribution transformer (DT), has relied on modelled rather than measured data. This can lead to inaccurate assessment of transformer health and non-optimised transformer utilisation. This paper presents a smart supervisory system for DTs incorporating self-protection, communications and comprehensive monitoring features. The monitoring includes fibre-optic winding hot-spot temperature (θHS), sensing, top oil temperature (TOT), sensing and dissolved gas analysis (DGA), through monitoring hydrogen levels. Self-protection is implemented through the direct control of the medium voltage (MV), switchgear, according to sensed θHS. Communication allows for transformer health data to be sent to a remote monitoring centre. This system provides accurate and dynamic monitoring of DTs, improving reliability and utilisation levels, and simplifying asset management.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"37 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":"126074733","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
Determination of Hybrid Energy Storage System Capacity based on Empirical Mode Decomposition for a High PV Penetrated Standalone Microgrid 基于经验模态分解的高光伏单体微电网混合储能系统容量确定
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757964
H. Hettiarachchi, S. Rajakaruna, S. Choi, A. Ghosh
{"title":"Determination of Hybrid Energy Storage System Capacity based on Empirical Mode Decomposition for a High PV Penetrated Standalone Microgrid","authors":"H. Hettiarachchi, S. Rajakaruna, S. Choi, A. Ghosh","doi":"10.1109/AUPEC.2018.8757964","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757964","url":null,"abstract":"This paper targets to introduce a novel approach for capacity determination of a hybrid energy storage system (HESS) of a standalone microgrid with high PV penetration. The imbalance power between solar PV and load is decomposed to yield its frequency-time components using Empirical Mode Decomposition (EMD) technique. Statistical characteristics of the components are then matched against the attributes of the energy storage devices, namely the electrochemical battery and supercapacitors. This is to achieve the collective benefit of the two storage media in their unique power and energy handling capabilities. This integrated approach is utilized to smoothen the PV variations in the most cost-effective manner. Concurrently, a proposed design procedure is used to determine the storage capacities of the hybrid energy storage system to avoid penalty of un-met load.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"7 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":"125148912","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
Location and Sizing of Distributed Generation Photovoltaic (DGPV) via Multi-Objective Pareto Algorithm 基于多目标Pareto算法的分布式光伏发电(DGPV)选址与规划
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758003
S. A. S. Mustaffa, I. Musirin, Muhammad Murtadha Othman, M. Mansor
{"title":"Location and Sizing of Distributed Generation Photovoltaic (DGPV) via Multi-Objective Pareto Algorithm","authors":"S. A. S. Mustaffa, I. Musirin, Muhammad Murtadha Othman, M. Mansor","doi":"10.1109/AUPEC.2018.8758003","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758003","url":null,"abstract":"This paper proposes a new multi-objective technique to solve the problem of optimal location and sizing of Distributed Generation Photovoltaic (DGPV) in the power system transmission network. The technique: Multi-objective Chaotic Mutation Immune Evolutionary Programming (MOCMIEP) was developed based on Pareto optimality to solve the DGPV location and sizing problem. The proposed technique determines the optimal location and sizing of DGPV, therefore will minimize the multiple objective functions, namely the active power losses and Fast Voltage Stability Index (FVSI) simultaneously. The method was tested on IEEE 118-Bus Reliability Test System (RTS). The results revealed that the proposed technique had the ability to acquire a set of Pareto solutions for the decision maker to choose depending on the system priorities.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"79 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":"121867938","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
A Multilayer Preventive Control to Regulate Voltage and Frequency in Autonomous Microgrids 自主微电网电压和频率的多层预防控制
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758055
Md. A. Shoeb, Farhad Shahnia, G. Shafiullah
{"title":"A Multilayer Preventive Control to Regulate Voltage and Frequency in Autonomous Microgrids","authors":"Md. A. Shoeb, Farhad Shahnia, G. Shafiullah","doi":"10.1109/AUPEC.2018.8758055","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758055","url":null,"abstract":"This paper proposes a method to prevent the frequency and voltage excursion in autonomous microgrids beyond their predefined desired ranges, following any change in load and/or renewable energy output. The proposed technique utilizes the short-term prediction data of load and renewable generations to determine any prospective occurrence of events that violate the microgrid’s predefined range of frequency or voltage. It then determines the optimal generation for dispatchable sources and the MG’s most appropriate topology as first options to prevent the violation. If it is not enough, the proposed technique goes on to engage in supporting actions, such as exchanging power with neighboring microgrid, utilizing energy storages, demand response and renewable energy curtailment. It considers the technical, reliability and environmental aspects of the MG along with the operational cost, as well as the cost of supporting actions. The optimized control variables are sent to the local controller before the occurrence of the event to maintain the frequency and voltage within the desired limits.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"13 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":"131758567","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: 7
Fault Detection in Transmission Lines —A Novel Voltage-Based Scheme for Differential Protection 输电线路故障检测——一种基于电压的差动保护新方案
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758062
S. Al-sachit, M. Sanjari, N. Nair
{"title":"Fault Detection in Transmission Lines —A Novel Voltage-Based Scheme for Differential Protection","authors":"S. Al-sachit, M. Sanjari, N. Nair","doi":"10.1109/AUPEC.2018.8758062","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758062","url":null,"abstract":"Current-based protection schemes such as distance, overcurrent, and differential relays are usually used to protect transmission lines (TL) in power systems where the high fault current plays a key role in detecting faults. The continuous development in the power network and emerging new technologies have made the power grid more complicated and soon will start to affect the reliability of the existing protection schemes. Issues like current transformer saturation, the effect of the mutual coupling impedance of the TL and emerging new power electronic-based technologies have become major challenges in power systems from a protection perspective. To avoid all the current-based problems this paper proposes a new voltage-based relay principle for TL protection to indicate fault occurrences in transmission networks. The proposed scheme is tested under all fault events to show that it is highly accurate when it comes to rapid trip activation during any of the tested cases.","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":"129431512","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
Effects of Network Unbalances and Their Solutions in Resonant Grounded Power Distribution Systems 谐振接地配电系统中网络不平衡的影响及其解决方法
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757878
M. Barik, A. Gargoom, M. A. Mahmud, M. E. Haque, A. Oo, H. Al-Khalidi, Martin Cavanagh
{"title":"Effects of Network Unbalances and Their Solutions in Resonant Grounded Power Distribution Systems","authors":"M. Barik, A. Gargoom, M. A. Mahmud, M. E. Haque, A. Oo, H. Al-Khalidi, Martin Cavanagh","doi":"10.1109/AUPEC.2018.8757878","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757878","url":null,"abstract":"This paper investigates the effects of network unbalances and proposes solutions to mitigate the effects for resonant grounded power distribution systems (RGPDSs). The effects of network capacitive unbalances are analyzed to investigate their sensitivities on the neutral voltage. The effects on the neutral voltage are minimized by controlling the unbalances. In this paper, a network balancing technique is developed which has the ability to optimally select reactance from distributed capacitor banks across different sections. The capacitors are selected in such a way that the residual currents are minimum at the substation, feeders, and sections. A weighted sum method is used in this paper to determine the optimal settings of the capacitor from variable capacitor banks with the primary objective to minimize the residual current at the substation along with two secondary objectives, i.e., minimizing the same for feeders and sections. Simulation studies are carried out to demonstrate the effectiveness of the proposed scheme in comparison with the system having a centralized capacitor bank. The performance of the proposed scheme is also evaluated for the scenario when the network configuration is changed. Simulation results demonstrate that the proposed technique is capable to limit the network unbalance at the substation, feeders, and sections.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"2 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":"132472106","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: 3
The Performance of A High Frequency Current Transducer for Partial Discharge Measurement under Testing with A Power Frequency Converter 一种用于局部放电测量的高频电流传感器在工频转换器上的性能测试
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758044
B. Leelachariyakul, B. Paophan, P. Chaisiri, P. Yutthagowith
{"title":"The Performance of A High Frequency Current Transducer for Partial Discharge Measurement under Testing with A Power Frequency Converter","authors":"B. Leelachariyakul, B. Paophan, P. Chaisiri, P. Yutthagowith","doi":"10.1109/AUPEC.2018.8758044","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758044","url":null,"abstract":"In this paper, the performance of a high-frequency current transducer (HFCT) for partial discharge measurement under testing with a power frequency converter is presented. The performances of the HFCT in comparison with the conventional partial discharge detection system (Omicron MPD600) were investigated terms of the ability to classify partial discharges and the background noises in the system from PD test cells in case of corona discharge, internal discharge and surface discharge. It’s found that the presented system provides the better performances (in terms of the background noise) than conventional PD detection system and it can also be used to distinguish type of partial discharges. In addition, the presented system has been used for the real partial test on the PD test cells successfully. The HFCT for PD detection is an attractive choice in the PD tests of high-voltage equipment.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"43 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":"114850040","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
A VRC H∞ Design for Dynamic Thermal Derating of Induction Machines 感应电机动态热降额的VRC H∞设计
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757950
S. Ali, M. J. Hossain, A. Hanif, V. Sharma, M. Kashif
{"title":"A VRC H∞ Design for Dynamic Thermal Derating of Induction Machines","authors":"S. Ali, M. J. Hossain, A. Hanif, V. Sharma, M. Kashif","doi":"10.1109/AUPEC.2018.8757950","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757950","url":null,"abstract":"Induction machines exhibit thermal derating in their performance during operation that causes sheer uncertainties in the controlling parameters such as stator and rotor resistances. It does not only affect the steady-state but also the dynamic response of an induction machine (IM). An output feedback variable resistance controller (VRC), which is inherently an H∞ linear parameter varying (LPV) controller, is proposed to compensate this thermal derating caused by stator resistance variations. An L2 gain bound and internal stability are ensured by linear matrix inequalities (LMIs). IM speed control is established by using input/output feedback linearization (I/O-FL). The proposed controller is implemented for a 30 kW induction motor in MATLAB® Simulink environment. Nonlinear simulation results show excellent performance tracking for the thermally derated dynamic IM characteristics in the presence of varying stator resistance and an applied load torque.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"62 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":"114573556","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: 3
Dissolved Gas Analysis Results in Wind Turbine Transformers 风力涡轮变压器溶解气体分析结果
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758061
Preetmani Singh, T. Blackburn
{"title":"Dissolved Gas Analysis Results in Wind Turbine Transformers","authors":"Preetmani Singh, T. Blackburn","doi":"10.1109/AUPEC.2018.8758061","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758061","url":null,"abstract":"In recent years there have been issues of unusual dissolved gas analysis (DGA) results from routine testing of wind-turbine transformers. These are differences when compared to results from tests of standard oil-filled distribution transformers. This paper reports on a comparison of DGA test results for such transformers in Australian wind farms.The results were analysed for their predictive potential fault effects using data from a number of locations around Australia. They were analysed using the Duval Triangle representation which allows multiple DGA results to be easily compared. Results from wind and grid transformers were compared from Australian laboratories. The results show significant differences which indicate different apparent sources of dissolved gases for the two transformer groups. Wind turbine transformer results were predominantly of electrical discharge origin while grid transformer results were primarily thermal in origin. While the data used for the comparison was limited the differences are quite distinct and support similar differences found in North America. This paper looks at possible sources of discharge activity and their connection to characteristics of wind turbines.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"32 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":"128436499","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
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