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2020 19th International Conference on Harmonics and Quality of Power (ICHQP)最新文献

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Interpretation of Harmonic Contribution Indices with respect to Calculated Emission Limits 用计算的排放限值解释谐波贡献指数
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177886
M. Pourarab, Jan Meyer, M. Halpin, Z. Iqbal, S. Djokic
{"title":"Interpretation of Harmonic Contribution Indices with respect to Calculated Emission Limits","authors":"M. Pourarab, Jan Meyer, M. Halpin, Z. Iqbal, S. Djokic","doi":"10.1109/ICHQP46026.2020.9177886","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177886","url":null,"abstract":"The general process of evaluating harmonic emissions of a customer installation consists of two stages. In the first (planning) stage, emission limits are calculated based on the procedures provided in standards or guidelines. In the second (operating) stage, the “actual” contribution of the customer installation to the voltage harmonic distortion during operation is assessed and compared with the calculated emission limits. Several methods for the contribution assessment exist, but it is not clear how the determined contribution should be compared with the limits calculated in the planning stage. Some aspects and considerations as to how the emission limits can be compared with the common indices for harmonic contribution assessment are presented in this paper. After a brief introduction of the commonly used procedures and calculation methods, an example of a simplified low voltage test system with three customer installations is used for the calculation and comparison of all relevant indices.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"33 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":"116113876","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
Double Fourier Integral Method for PWM Rectifiers to Estimate Harmonics of Uncontrolled Rectifiers 双傅立叶积分法估计无控整流器谐波
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177917
R. O. Abdelqader, D. Robinson
{"title":"Double Fourier Integral Method for PWM Rectifiers to Estimate Harmonics of Uncontrolled Rectifiers","authors":"R. O. Abdelqader, D. Robinson","doi":"10.1109/ICHQP46026.2020.9177917","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177917","url":null,"abstract":"PWM rectifiers are gradually replacing controlled and uncontrolled rectifiers as the preferred technology in industrial applications. While estimating harmonic current emissions from theses devices is well known when connected to clean supplies, there is a need to improve the understanding of harmonic current emissions from PWM rectifiers arising when high levels of background voltage harmonic distortion are present. This paper presents a mathematical approach to describing the harmonic current emissions of an uncontrolled rectifier, as a special case of PWM rectifier, as a first stage to a understanding PWM rectifier harmonic emissions when high level of background harmonics are present. The approach uses derived mathematical equations to assess the influence of background voltage distortion on the harmonic current distortion of the rectifier. The mathematical expression for the harmonic current is derived using the Double Fourier Integral method.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"107 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":"124117745","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
Analysis of Sensitivity of Harmonic Resonance in Low Voltage Networks 低压电网谐波谐振灵敏度分析
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177878
S. Kannan, Jan Meyer
{"title":"Analysis of Sensitivity of Harmonic Resonance in Low Voltage Networks","authors":"S. Kannan, Jan Meyer","doi":"10.1109/ICHQP46026.2020.9177878","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177878","url":null,"abstract":"Harmonic resonance in Low-Voltage networks is increasingly observed majorly caused due to increase in capacitive based modern power electronic equipment. This paper presents a systematic mathematical outlook on harmonic resonances and the effects of various parameters on its sensitivity. Frequency-domain based models for a single and multi-feeder network with distributed loads are considered for analysis. Various factors such as a change in load demand, change in distance between busbar and loads, and change in distribution transformer’s power capacity are considered and their effect on harmonic resonance sensitivity is analyzed.","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":"131535544","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
Impact of Transmission Line Protection Schemes on Voltage Sags 输电线路保护方案对电压跌落的影响
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ichqp46026.2020.9177893
A. Santos, M. Teresa, Correia de Barros
{"title":"Impact of Transmission Line Protection Schemes on Voltage Sags","authors":"A. Santos, M. Teresa, Correia de Barros","doi":"10.1109/ichqp46026.2020.9177893","DOIUrl":"https://doi.org/10.1109/ichqp46026.2020.9177893","url":null,"abstract":"Improving voltage quality, as regards voltage sags, can be achieved by reducing the number of short-circuits and by shortening the fault clearance time through improving the protection schemes used in the network. A methodology previously developed by the authors based on Monte Carlo simulation has been extended by means of introducing adequate probabilistic performance indices. An example is presented, considering the IEEE Reliability Test System and load equipment compliant with SEMI F47-0706 and IEC 61000-4-11/34 standards. Four transmission line primary protection schemes are compared, and results show that obtained improvements have neither a straight relation to site exposure to voltage sags nor to the site short-circuit power. The presented example highlights the importance of applying stochastic prediction methods to this type of assessment, allowing utilities to support capital expenditure decisions in new protection scheme design aiming at improving the quality of supply as regards voltage sags. Moreover, the methodology allows to quantify the customer benefit, which depends on the equipment voltage tolerance curve.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"29 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":"132301320","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
Probabilistic Assessment of Harmonics in a Residential Network 住宅电网谐波的概率评估
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177873
P. Rodríguez-Pajarón, Araceli Hernández, J. Milanović
{"title":"Probabilistic Assessment of Harmonics in a Residential Network","authors":"P. Rodríguez-Pajarón, Araceli Hernández, J. Milanović","doi":"10.1109/ICHQP46026.2020.9177873","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177873","url":null,"abstract":"This paper presents a framework to assess voltage harmonic levels of future distribution networks with increasing participation of nonlinear loads and photovoltaic distributed generation. The methodology proposed is used to assess harmonic impact up to 7th order and THD degradation in future scenarios up till year 2030 in low voltage residential networks. Stochastic behaviour of loads and photovoltaic generation is considered in the model by applying a probabilistic approach that accounts for uncertainties in electrical devices allocation and performance. A Monte Carlo simulation is performed for every scenario studied in order to obtain a probabilistic assessment of harmonic impact.The methodology proposed is applied to the IEEE European Low Voltage network and results are compared to standard EN50160 limits as the reference framework for low voltage power quality indices.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"136 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":"116385902","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
Application of Voltage Harmonic Vector Method at the Interface between HV and MV Systems 电压谐波矢量法在中高压系统界面上的应用
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177902
A. Špelko, I. Papič, A. Testa, R. Langella, S. Djokic
{"title":"Application of Voltage Harmonic Vector Method at the Interface between HV and MV Systems","authors":"A. Špelko, I. Papič, A. Testa, R. Langella, S. Djokic","doi":"10.1109/ICHQP46026.2020.9177902","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177902","url":null,"abstract":"An important operational aspect of modern grids is implementation of a continuous assessment of low-order harmonic emissions from customer installations. While this problem was previously considered in MV systems by the same authors, this paper focuses on the interface between the HV grid and MV distribution systems. The voltage harmonic vector (VHV) approach is utilized to interpret quantities measured at the point of common coupling (PCC), either to check specific assigned emission limits, or to assess customers’ installations contributions to the total harmonic distortion. An HV/MV test system is proposed, combining the HV test system previously proposed by CIGRE/CIRED JWG C4/B4.3S with the MV IEEE benchmark test system previously proposed by the IEEE PES TF on “Harmonic Modeling, Simulation and Assessment”. The analysis is conducted by means of iterative harmonic analysis, in order to manage large number of MV-HV components, as well as to deal with the resonances. The presented results illustrate differences when actual and reference impedances of HV system and MV customer installations are used for the analysis, confirming the overall good performance of the VHV approach when applied at the interface between HV and MV systems.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"24 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":"125933510","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
Rediscovering the Derating Mechanisms for Three-Phase Induction Motors Operating under Supply Voltage Unbalance 供电电压不平衡下三相感应电动机降额机理的再研究
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177885
Pathum Sudasinghe, S. Perera, P. Commins, J. Moscrop, U. Jayatunga, Prasad Wadduwage
{"title":"Rediscovering the Derating Mechanisms for Three-Phase Induction Motors Operating under Supply Voltage Unbalance","authors":"Pathum Sudasinghe, S. Perera, P. Commins, J. Moscrop, U. Jayatunga, Prasad Wadduwage","doi":"10.1109/ICHQP46026.2020.9177885","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177885","url":null,"abstract":"This paper presents a comprehensive analysis on the operating performance of three-phase Induction Motors (IMs) driven by unbalanced supply voltages. It is a well known fact that three-phase IMs are adversely affected by the presence of unbalanced supply voltages and it is required to derate the output power wisely for efficient and safer operation of the motor. There is a certain guidance given in NEMA MG1-1993 to decide a suitable derating level, however limitations and drawbacks of such practices have been identified. Although voltage unbalance is a well-defined concept, existence of numerous voltage unbalance conditions have led to problematic prediction of IM performance in terms of temperature rise and motor derating. Thus, different study approaches, their findings, limitations and shortcomings are critically reviewed in this paper in order to develop a comprehensive derating mechanism for three-phase IMs.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"106 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":"116766240","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
A Procedure for Aggregation of Quasi-Static Time-Varying Harmonic Components: A Matlab-Simulink Model 准静态时变谐波分量的聚集过程:Matlab-Simulink模型
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177906
R. Lamedica, S. Sangiovanni, A. Ruvio, P. Ribeiro
{"title":"A Procedure for Aggregation of Quasi-Static Time-Varying Harmonic Components: A Matlab-Simulink Model","authors":"R. Lamedica, S. Sangiovanni, A. Ruvio, P. Ribeiro","doi":"10.1109/ICHQP46026.2020.9177906","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177906","url":null,"abstract":"The paper proposes a generic Matlab-Simulink model to represent quasi-static time-varying non-linear loads in power systems. The methodology presented allows to combine both deterministic and a probabilistic approaches. The procedure is able to evaluate voltage and current harmonic spectra under uncertainty scenarios in a power system allowing a preevaluation of harmonic disturbances. The methodology allows to simulate load variability taking into account power consumption and harmonic profile changes in time and to evaluate the introduction of new non-linear loads and renewable sources in a generic electrical power system.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"74 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":"121789717","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
Prediction of Voltage Sag Economic Losses based on Information Distribution and Diffusion Theory 基于信息分布扩散理论的电压暂降经济损失预测
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177916
Ding Kai, Huaming Pan, Li Wei, Qian Yi-min, Wang Ying, Xia Xian-yong
{"title":"Prediction of Voltage Sag Economic Losses based on Information Distribution and Diffusion Theory","authors":"Ding Kai, Huaming Pan, Li Wei, Qian Yi-min, Wang Ying, Xia Xian-yong","doi":"10.1109/ICHQP46026.2020.9177916","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177916","url":null,"abstract":"Voltage sag brings economic losses that are difficult to measure for industrial users. The use of sag monitoring information and related indices for forecasting is the key to solving this problem. In order to realize the rapid and reasonable prediction of the losses results in the early stage of the event, this paper proposes a voltage sag economic losses prediction model based on information distribution and diffusion theory. Firstly, the method principle of information distribution and diffusion theory is explained. Based on the existing research, the severity of sag and economic losses are discussed. Then, considering the close causal relationship between them, the article established the fuzzy relationship between severity and economic losses based on information diffusion theory. Subsequently, the information distribution theory is used to fuzzify the severity index data, and the fuzzy relationship is used to predict the economic losses of existing samples. Finally, the actual data is analyzed, and the results show that the proposed method has less error in prediction results, and can provide data support and reference basis for user production decision quickly in the early stage of the event, which has important practical significance and application value.","PeriodicalId":436720,"journal":{"name":"2020 19th International Conference on Harmonics and Quality of Power (ICHQP)","volume":"184 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":"132823260","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
Harmonic Allocations to Renewable Generation in Transmission Systems 输电系统中可再生能源发电的谐波分配
2020 19th International Conference on Harmonics and Quality of Power (ICHQP) Pub Date : 2020-07-01 DOI: 10.1109/ICHQP46026.2020.9177890
T. Vu, D. Robinson, V. Gosbell, S. Perera, R. Memisevic
{"title":"Harmonic Allocations to Renewable Generation in Transmission Systems","authors":"T. Vu, D. Robinson, V. Gosbell, S. Perera, R. Memisevic","doi":"10.1109/ICHQP46026.2020.9177890","DOIUrl":"https://doi.org/10.1109/ICHQP46026.2020.9177890","url":null,"abstract":"Renewable generation sources have recently been integrated in power systems at an accelerated pace due to their relatively low capital cost, short project delivery time and quick return on investment compared to conventional thermal generators. Large scale wind and solar generation generally incorporate power electronic based converters, produce significant harmonic currents, and when installed at remote buses, introduce new challenges to Transmission Service Operators in regards to harmonic management. If not managed effectively, harmonic levels can lead to gradual degradation of both customer plant and network equipment. Information from practical case studies is a vital step in managing and mitigating harmonic issues. This paper identifies and examines harmonic allocation issues associated with the integration of wind and solar plants in transmission systems through application of a recommended allocation methodology. It also includes recommendations for improvements to harmonic management in transmission systems with increased penetration of power electronic based generation.","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":"130271851","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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