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High gain DC-DC converter for DC power transmission for offshore wind farms 用于海上风电场直流输电的高增益DC-DC变换器
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ichqp46026.2020.9177909
T. Adefarati, M.S.L. Nozakuzaku, R. Naidoo, R. Bansal
{"title":"High gain DC-DC converter for DC power transmission for offshore wind farms","authors":"T. Adefarati, M.S.L. Nozakuzaku, R. Naidoo, R. Bansal","doi":"10.1109/ichqp46026.2020.9177909","DOIUrl":"https://doi.org/10.1109/ichqp46026.2020.9177909","url":null,"abstract":"The public concerns for a potential alternative power generation has been attributed to global warming, depletion of fossil fuels, greenhouse gas emissions that associated with the operation of conventional power plants, health hazards, soil degradation, ozone layer depletion and high cost of fossil fuels. The life span of reserved fossil fuel based on the global record is short and this has prompted many government agencies to put different strategic structures or platforms in place and adopt green technologies as the prospective means of satisfying the load demand. With renewable energy, electricity production can be distributed to various customers by using microgrid system to shorten transmission and distribution distances and losses as well as to save costs. This research work proposes the use of DC transmission on offshore wind farms to solve electricity shortage problems based on some technical and economic benefits. The power generated from the offshore wind farms is three times higher than power generated from onshore wind farms since offshore winds are stronger than onshore winds. Hence, offshore wind should be harnessed by the independent power providers for electrical power production. The simulation was carried out by using PSIM and the results were analyzed to show the impacts of offshore winds on the optimal operation of the power system.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115634000","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
Modeling of LVDC Distribution System: An Assessment of Control, Power Quality, and DC Faults LVDC配电系统建模:控制、电能质量和直流故障的评估
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177920
Brenna Morris, Ghazanfar Faheem, Ragaini Enrico, Zaninelli Dario
{"title":"Modeling of LVDC Distribution System: An Assessment of Control, Power Quality, and DC Faults","authors":"Brenna Morris, Ghazanfar Faheem, Ragaini Enrico, Zaninelli Dario","doi":"10.1109/ICHQP46026.2020.9177920","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177920","url":null,"abstract":"The main goal of this paper is to design, control, and perform power quality analysis in the LVDC domain by using a three-level neutral point clamped converter. A ± 500 Vdc two-terminal VSC-LVDC distribution system uses, and time-domain simulation model is implemented in the Simulink environment. The stability of network controllers VSC (voltage & power) has analyzed during voltage and power perturbations. Furthermore, the power quality and faults in the DC network are studied. The inclusive simulations show the transients in DC bus voltage, while the proposed filter design can limit adequate harmonics content in the customer-end network. Finally, the LVDC faults analysis propose an advanced control strategy that can offer robust performance during steady-state and transient conditions, while improved DC voltage handling capabilities.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125903886","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
The impact of aggregation interval on current harmonic simulation of aggregated electric vehicle loads 聚集间隔对聚集电动汽车负荷电流谐波模拟的影响
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177899
G. Foskolos, K. Lundengård
{"title":"The impact of aggregation interval on current harmonic simulation of aggregated electric vehicle loads","authors":"G. Foskolos, K. Lundengård","doi":"10.1109/ICHQP46026.2020.9177899","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177899","url":null,"abstract":"Electric vehicles (EVs) poses new challenges for the Distribution System Operator (DSO). For example, EVs uses power electronic-based rectifiers for charging their batteries, an operation that could significantly impact Power Quality (PQ) in terms of harmonic distortion. The DSO responsibilities include ensuring grid code compliance confirmed by PQ metering. In general, 10 min rms values are sufficient. However, the large scale integration of non-linear loads, like EVs, could lead to new dynamic phenomena, possibly lost in the process of time aggregation.This paper presents an analysis of the impact on time aggregation (3 s-, 1min-and 10 min rms), when modelling current harmonics of aggregated EV loads, using power exponential functions. The results indicate that, while3 s rms and 1 min rms marginally affect the outcome, 10 min rms aggregation will lead to a significant deviation (>30%) in terms of maximum current harmonic magnitude.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129649119","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
Level-Crossing Sampling for Li-Ion Batteries Effective State of Health Estimation 锂离子电池有效健康状态估计的交叉采样方法
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177915
S. Qaisar, Maram AlQathami
{"title":"Level-Crossing Sampling for Li-Ion Batteries Effective State of Health Estimation","authors":"S. Qaisar, Maram AlQathami","doi":"10.1109/ICHQP46026.2020.9177915","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177915","url":null,"abstract":"Use of Li-Ion batteries is increasing exponentially. The Battery Management Systems (BMSs) are used to achieve a longer battery life and to maximize its usefulness. Contemporary BMSs are complex, creating a greater overhead consumption on the battery. The purpose of this work is to improve the power efficiency of the modern BMSs. To this end the processes of level-crossing sensing and processing are used. The emphasis is on developing a reliable, efficient, and real-time technique for estimating battery cells’ state of health (SoH). Using an original event-driven approach, the SoH is approximated. Comparison of the designed system is performed with traditional equivalents. Results show an outperformance of 4.7-fold in terms of compression gain and computational efficiency while maintaining sufficient precision of the SoH estimation.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123893100","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
Analysis of Harmonic Levels from PWM Rectifiers due to Background Voltage Distortion 背景电压畸变引起的PWM整流器谐波电平分析
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177882
R. O. Abdelqader, D. Robinson, P. Ciufo
{"title":"Analysis of Harmonic Levels from PWM Rectifiers due to Background Voltage Distortion","authors":"R. O. Abdelqader, D. Robinson, P. Ciufo","doi":"10.1109/ICHQP46026.2020.9177882","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177882","url":null,"abstract":"PWM rectifiers receive significant attention due to their flexible control and perceived low harmonic currents, and as a consequence are replacing controlled and uncontrolled rectifiers as the preferred technology in industrial applications. However, low harmonic currents from PWM rectifiers are generally limited to applications where supply voltages have very low background distortion. An investigation using derived mathematical equations, simulation and laboratory measurement is presented to assess the influence of higher levels of background voltage distortion on the harmonic current distortion of PWM rectifiers. The mathematical expression for the harmonic current is derived using the Double Fourier Integral method. A simulation model is developed to quantity the effect of increased supply voltage distortion on harmonic currents from PWM rectifiers. Simulation results and laboratory measurements are presented for the simple case of a PWM rectifier to validate the methodology, which will ultimately be used for future work to quantity the influence of supply voltage distortion. As expected the increase in harmonic current of a PWM rectifier is heavily impacted by the severity of the voltage distortion appearing at the PWM rectifier terminals.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125422480","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
Harmonic Resonance Assessment Based on Field Measurements Data in an Industrial Plant 基于现场测量数据的工业厂房谐波共振评估
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177930
Amin Nafisi, M. Rezvani, R. Arababadi, Saeed Esmaeili
{"title":"Harmonic Resonance Assessment Based on Field Measurements Data in an Industrial Plant","authors":"Amin Nafisi, M. Rezvani, R. Arababadi, Saeed Esmaeili","doi":"10.1109/ICHQP46026.2020.9177930","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177930","url":null,"abstract":"Harmonic resonance is a major concern in harmonic analysis of industrial power systems. This event can jeopardize system reliability and lead to significant issues in industrial plants. Consequently, assessment of electrical industrial networks from harmonic study point of view is essential. Field measurements can determine conditions and causes of a resonance phenomenon. In this study, the electrical network of Golgohar (GEG) Mining and Industrial Company is investigated using a power quality monitoring device. Measurements show a harmonic resonance at the frequency of 350 Hz. Moreover, this resonance is caused by the interaction of 6.3 kV shunt capacitors and the grid. In order to mitigate the resonance phenomenon, the whole electrical grid of the GEG Company is simulated in DIgSILENT PowerFactory software in details. A practical solution to eliminate the harmonic resonance is proposed. Results show the effectiveness of using single-tuned filters for harmonic resonance mitigation.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125987164","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
Market Structure for Enabling Volt/Var Control in Australian Distribution Networks: A Practical Perspective 在澳大利亚配电网启用伏特/无功控制的市场结构:一个实用的观点
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177936
Izzah Afandi, A. Agalgaonkar, S. Perera
{"title":"Market Structure for Enabling Volt/Var Control in Australian Distribution Networks: A Practical Perspective","authors":"Izzah Afandi, A. Agalgaonkar, S. Perera","doi":"10.1109/ICHQP46026.2020.9177936","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177936","url":null,"abstract":"The proliferation of distributed generation (DG) poses new challenges in management of voltages in distribution networks. Excess generation by DG systems can cause voltage rise and reverse power flows, changing the paradigm of unidirectional power flow in distribution networks. Among many mitigation strategies, volt/var control methods that utilise inverter-interfaced DG systems to rectify voltage issues would be beneficial not only because DG system are typically located closer to customers, but the inverters can also provide fast response in contrast to mechanically operating volt/var control devices. As yet, DG owners only generate revenues from the production of active power while no incentives are provided for reactive power import/export, signifying the need for an update in the market structure to follow the growth of inverter-interfaced DG systems in distribution networks. This paper aims to propose an economic incentive scheme for utilising the full capacity of photovoltaic (PV) systems in Australian distribution networks. A ‘lost opportunity’ market structure that considers non-unity power factor operation of PV inverters in volt/var control strategies is proposed. The results show that the proposed market structure can encourage participation of domestic PV systems in volt/var control by providing a win-win solution for all stakeholders in a distribution network.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126576641","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
Measurements of Harmonic Voltages at Multiple Locations in LV and MV Networks 低压和中压网络中多个位置谐波电压的测量
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177926
N. Nakhodchi, T. Busatto, M. Bollen
{"title":"Measurements of Harmonic Voltages at Multiple Locations in LV and MV Networks","authors":"N. Nakhodchi, T. Busatto, M. Bollen","doi":"10.1109/ICHQP46026.2020.9177926","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177926","url":null,"abstract":"This paper presents harmonic voltage measurements for a part of a distribution network including low-voltage (400 V) and medium-voltage (10 kV). Measurements were performed during 2017 and 2018 in the north of Sweden. This paper shows correlations between different harmonic orders in low voltage and the correlation between low and medium-voltage harmonics. This information can be used for harmonic propagation studies in distribution networks. The results showed significant correlation between the 5th and 7th harmonics for low-voltage side and very high correlation between 5th harmonic order in low-voltage and medium-voltage. It is also observed that 5th harmonic has almost the same values for all transformers connected to the same 40 kV network.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130823718","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: 8
Probabilistic Component-Based Models for Harmonic Analysis of Generic Aggregate LED Lamp Loads 基于概率分量的综合LED灯负载谐波分析模型
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177934
Z. Guo, S. Djokic, X. Xu, A. Collin, R. Langella, A. Testa
{"title":"Probabilistic Component-Based Models for Harmonic Analysis of Generic Aggregate LED Lamp Loads","authors":"Z. Guo, S. Djokic, X. Xu, A. Collin, R. Langella, A. Testa","doi":"10.1109/ICHQP46026.2020.9177934","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177934","url":null,"abstract":"This paper proposes a methodology for improving the representation of component-based models intended for harmonic analysis of generic aggregate LED lamp loads by deriving pdfs of the parameter values. The methodology is illustrated using time-domain current waveform measurements of LED lamps with switch-mode driver circuits (without power factor correction). Following the model derivation, Monte Carlo simulations are used to synthesize generic aggregate LED lamp loads, which are compared against random aggregations of 51 measured lamps. It is demonstrated that a single model with mean values of the parameters, scaled by the total power demand, can be used to simplify the representation of generic aggregate LED lamp loads in large-scale emission assessment studies. Correction factors, which reduce the effect of this simplification in frequency domain applications, are also derived and discussed.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133071267","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
Improving dynamic microgrid modelling through the use of synchronised field data 通过使用同步现场数据改进动态微电网建模
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177929
RJ Erasmus, A. Rens, G. V. Schoor, K. Uren
{"title":"Improving dynamic microgrid modelling through the use of synchronised field data","authors":"RJ Erasmus, A. Rens, G. V. Schoor, K. Uren","doi":"10.1109/ICHQP46026.2020.9177929","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177929","url":null,"abstract":"Simulation during the design and operation of microgrids should include dynamic phenomena that would be a result of the unpredictable variation in renewable generation and loading. Detailed modelling of different components is constrained when using simplified models from suppliers. Accurate prediction of system response is needed to maintain voltage stability within a microgrid during islanded conditions and when grid-connected, between interconnected microgrids. Distributed energy resources in a microgrid are constituted by local generation (mostly renewable and standby diesel), a grid connection and increasingly, local storage (most commonly batteries). Synchronised field data is used to validate, and improve, the results obtained from a microgrid simulation model during both steady-state and transient conditions. This microgrid simulation approach makes use of MATLAB™ and DIgSILENT™, and is shown to be useful in designing for predictable performance. With field representative results, the model developed in DIgSILENT™ can be used as a development tool allowing various control strategies and component configurations to be tested.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133674082","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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