Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808691
G. Casolino, L. Di Stasio, P. Varilone, P. Verde, C. Noce, M. De Santis
The availability of measured sags in real power systems opens the appealing option of forecasting the occurrence of voltage sags rather than estimating the average performance, as traditionally done in the literature. The voltage sags measured in real electric power systems can be divided into two main categories, i.e., rare voltage sags and clusters of voltage sags. Rare voltage sags meet the conditions of a Poisson process; instead, the presence of clusters brings the phenomenon far from the conditions of the Poisson model. Very recently, the authors of this paper demonstrated that the forecast of the number of rare voltage sags of a system or a part of is viable using only three years of measurements with acceptable prevision errors. If the clusters are included in all the measured sags, a stochastic model is needed to account for the time dependence of the sags. In this paper, using the recorded measurements of three years at the sites of a real regional electric system, the voltage sags comprehensive of clusters were modelled to forecast the number of sags in the incoming year. Not completely satisfactory results on all the system suggested to deep analyze in few sites the rare sags separately from the sags comprehensive of clusters. The intermittence indices, previous proposed by the authors, proved to be an effective tool to discriminate the forecast model to use.
{"title":"On the Forecast of the Voltage Sags Using the Measurements in Real Power Systems","authors":"G. Casolino, L. Di Stasio, P. Varilone, P. Verde, C. Noce, M. De Santis","doi":"10.1109/ICHQP53011.2022.9808691","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808691","url":null,"abstract":"The availability of measured sags in real power systems opens the appealing option of forecasting the occurrence of voltage sags rather than estimating the average performance, as traditionally done in the literature. The voltage sags measured in real electric power systems can be divided into two main categories, i.e., rare voltage sags and clusters of voltage sags. Rare voltage sags meet the conditions of a Poisson process; instead, the presence of clusters brings the phenomenon far from the conditions of the Poisson model. Very recently, the authors of this paper demonstrated that the forecast of the number of rare voltage sags of a system or a part of is viable using only three years of measurements with acceptable prevision errors. If the clusters are included in all the measured sags, a stochastic model is needed to account for the time dependence of the sags. In this paper, using the recorded measurements of three years at the sites of a real regional electric system, the voltage sags comprehensive of clusters were modelled to forecast the number of sags in the incoming year. Not completely satisfactory results on all the system suggested to deep analyze in few sites the rare sags separately from the sags comprehensive of clusters. The intermittence indices, previous proposed by the authors, proved to be an effective tool to discriminate the forecast model to use.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133413012","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808536
E. Stracqualursi, R. Araneo, J. Faria, P. Burghignoli, A. Andreotti
Towers in overhead power lines should be accurately modelled as to enable representing the wave effects when endangered by lightning impulse currents, for discharges striking the tower or the shield wires, or for flashover occurring between the phase conductors and the tower. Several tower models have been developed over the years and, recently, the authors have proposed a new approach based on the Sommerfeld-Goubau wave formalism. The new approach allows to accurately explain the main physical phenomenon associated with the transient behaviour of towers, attempting to clarify some of the assumptions advocated by researchers in this field in a simple way.
{"title":"The Sommerfeld-Goubau Theory for the Transient Response of Towers","authors":"E. Stracqualursi, R. Araneo, J. Faria, P. Burghignoli, A. Andreotti","doi":"10.1109/ICHQP53011.2022.9808536","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808536","url":null,"abstract":"Towers in overhead power lines should be accurately modelled as to enable representing the wave effects when endangered by lightning impulse currents, for discharges striking the tower or the shield wires, or for flashover occurring between the phase conductors and the tower. Several tower models have been developed over the years and, recently, the authors have proposed a new approach based on the Sommerfeld-Goubau wave formalism. The new approach allows to accurately explain the main physical phenomenon associated with the transient behaviour of towers, attempting to clarify some of the assumptions advocated by researchers in this field in a simple way.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116484218","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808496
H. E. van den Brom, Z. Marais, R. van Leeuwen
The shift towards more renewable energy sources and sustainable technologies has increased the interest in low-voltage DC grids. However, the definition of power quality issues in DC grids and related measurement techniques are still in their infancy. Consequently, standardization of DC electricity meter testing is not yet fully covering immunity to DC-grid-specific disturbances. Therefore, a new arbitrary-waveform testbed has been developed for testing of DC electricity meters in the presence of broadband disturbance signals with frequency components up to 150 kHz for DC voltage and current levels up to 1500 V and 600 A, respectively. The components of the testbed are calibrated and characterized, and a first demonstration of the complete setup was performed by testing a DC wideband precision power analyzer as an electricity meter. Apart from DC meter testing for customers, the testbed will be used for research to provide input for improved standardization.
{"title":"Testing of DC Electricity Meters with Broadband Conducted Electromagnetic Disturbances","authors":"H. E. van den Brom, Z. Marais, R. van Leeuwen","doi":"10.1109/ICHQP53011.2022.9808496","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808496","url":null,"abstract":"The shift towards more renewable energy sources and sustainable technologies has increased the interest in low-voltage DC grids. However, the definition of power quality issues in DC grids and related measurement techniques are still in their infancy. Consequently, standardization of DC electricity meter testing is not yet fully covering immunity to DC-grid-specific disturbances. Therefore, a new arbitrary-waveform testbed has been developed for testing of DC electricity meters in the presence of broadband disturbance signals with frequency components up to 150 kHz for DC voltage and current levels up to 1500 V and 600 A, respectively. The components of the testbed are calibrated and characterized, and a first demonstration of the complete setup was performed by testing a DC wideband precision power analyzer as an electricity meter. Apart from DC meter testing for customers, the testbed will be used for research to provide input for improved standardization.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133643027","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808455
Arash Moradi, Firuz Zare, J. Yaghoobi
Increase in the amplitude of current harmonics at a resonance frequency could lead to high voltage harmonics in the distribution network due to resonance. As these voltage harmonics could potentially damage the insulation of network elements, preventive actions need to be taken. To take preventive actions, investigating the possibility of resonance occurrence in network is necessary. For that purpose, the resonance frequencies of the network can be estimated by employing the equivalent circuits of circuit elements, such as cables or transformers. This indicates that the accuracy of these equivalent circuits significantly affects the estimated resonance frequencies. Consequently, this paper studies the equivalent circuits of grid elements in terms of resonance frequency calculation. Also, the impacts of skin effect and parallel capacitor in cable, and the high frequency model of transformers on the estimated resonance frequencies are analysed. These investigations show that skin effect changes the value of parameters at different frequencies nonlinearly, which further complicates the estimation of resonance frequencies. Therefore, Reduced Least Squares (RLS) method is developed to estimate resonance frequencies based on Least Squares method. Finally, the RLS method is verified by the results of different case studies.
{"title":"Predicting Resonance Frequencies in Distribution Networks with Grid-Connected Inverters","authors":"Arash Moradi, Firuz Zare, J. Yaghoobi","doi":"10.1109/ICHQP53011.2022.9808455","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808455","url":null,"abstract":"Increase in the amplitude of current harmonics at a resonance frequency could lead to high voltage harmonics in the distribution network due to resonance. As these voltage harmonics could potentially damage the insulation of network elements, preventive actions need to be taken. To take preventive actions, investigating the possibility of resonance occurrence in network is necessary. For that purpose, the resonance frequencies of the network can be estimated by employing the equivalent circuits of circuit elements, such as cables or transformers. This indicates that the accuracy of these equivalent circuits significantly affects the estimated resonance frequencies. Consequently, this paper studies the equivalent circuits of grid elements in terms of resonance frequency calculation. Also, the impacts of skin effect and parallel capacitor in cable, and the high frequency model of transformers on the estimated resonance frequencies are analysed. These investigations show that skin effect changes the value of parameters at different frequencies nonlinearly, which further complicates the estimation of resonance frequencies. Therefore, Reduced Least Squares (RLS) method is developed to estimate resonance frequencies based on Least Squares method. Finally, the RLS method is verified by the results of different case studies.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132838909","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808769
F. Mottola, D. Proto, P. Varilone, P. Verde
Starting from the novel evaluation given in the recent Italian regulation to voltage dip costs, this paper focuses on distribution level and proposes to face voltage quality problems through the use of electrical energy storage systems which are supposed to provide voltage compensation in a medium voltage microgrid. The storage systems are assumed to be employed also for the reduction of the cost of energy sustained by the microgrid operator. A siting and sizing methodology of the electrical energy storage systems is proposed. For the economical evaluation, probabilistic distributions are used for some of the inputs of the procedure. Eventually, a sensitivity analysis is proposed aimed at analyzing the effects of different values of the penalties given for voltage dips.
{"title":"Optimal Siting and Sizing of Electrical Energy Storages Accounting for Voltage Dip Economic Regulation","authors":"F. Mottola, D. Proto, P. Varilone, P. Verde","doi":"10.1109/ICHQP53011.2022.9808769","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808769","url":null,"abstract":"Starting from the novel evaluation given in the recent Italian regulation to voltage dip costs, this paper focuses on distribution level and proposes to face voltage quality problems through the use of electrical energy storage systems which are supposed to provide voltage compensation in a medium voltage microgrid. The storage systems are assumed to be employed also for the reduction of the cost of energy sustained by the microgrid operator. A siting and sizing methodology of the electrical energy storage systems is proposed. For the economical evaluation, probabilistic distributions are used for some of the inputs of the procedure. Eventually, a sensitivity analysis is proposed aimed at analyzing the effects of different values of the penalties given for voltage dips.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133553586","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808838
M. Shaon, Y. Baghzouz
A significant portion of the annual residential electricity bill in areas that offer variable rates is associated with the summer on-peak period. Customers can reduce their bills by controlling flexible loads, and those with PV systems can achieve extra savings by installing a battery energy storage (BES) system, but this latter is often not economical due the high capital cost. In this article, a lease an energy storage block from a front-of-the-meter utility-owned storage system - known as Energy Storage as a Service (ESaaS) is proposed instead. Potential cost savings from air conditioning (AC) load control in addition to leasing an ESaaS block are evaluated for different block sizes and leasing costs using a heuristic optimization method. The approach is illustrated by analyzing the electricity bill of a residential customer with a PV system and a controllable AC load, using time series smart meter load data, and local Time-Of-Use (TOU) utility rates.
{"title":"Customer Bill Management Using Thermal and Virtual Electricity Storage","authors":"M. Shaon, Y. Baghzouz","doi":"10.1109/ICHQP53011.2022.9808838","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808838","url":null,"abstract":"A significant portion of the annual residential electricity bill in areas that offer variable rates is associated with the summer on-peak period. Customers can reduce their bills by controlling flexible loads, and those with PV systems can achieve extra savings by installing a battery energy storage (BES) system, but this latter is often not economical due the high capital cost. In this article, a lease an energy storage block from a front-of-the-meter utility-owned storage system - known as Energy Storage as a Service (ESaaS) is proposed instead. Potential cost savings from air conditioning (AC) load control in addition to leasing an ESaaS block are evaluated for different block sizes and leasing costs using a heuristic optimization method. The approach is illustrated by analyzing the electricity bill of a residential customer with a PV system and a controllable AC load, using time series smart meter load data, and local Time-Of-Use (TOU) utility rates.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129169539","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808610
Lu Wan, A. Beshir, Xinglong Wu, Xiaokang Liu, F. Grassi, G. Spadacini, S. Pignari, M. Zanoni, R. Chiumeo, L. Tenti
The development of power electronics for the integration of renewable energy sources in power distribution networks leads to increasing issues in terms of coexistence with communication systems, e.g., those based on powerline communications. This is due to the high-frequency noise currents, conducted emissions (CE), which, generated by power electronics devices, can propagate along the network through power cables. With the objective to provide guidelines to assure coexistence with communications systems, in this work a LV/MV distribution network is modelled and simulated in the frequency domain to predict the noise in different branches and to identify the factors that mostly affect CE propagation. The analysis mainly focuses on the effects due to power cables, and puts in evidence the need for their accurate modelling through transmission line theory in order to account for different cable features, such as per-unit-length parameters, cable length, and terminal conditions, which influence CE propagation.
{"title":"Cable Effects on Noise Propagation in Distribution Networks with Renewable Sources","authors":"Lu Wan, A. Beshir, Xinglong Wu, Xiaokang Liu, F. Grassi, G. Spadacini, S. Pignari, M. Zanoni, R. Chiumeo, L. Tenti","doi":"10.1109/ICHQP53011.2022.9808610","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808610","url":null,"abstract":"The development of power electronics for the integration of renewable energy sources in power distribution networks leads to increasing issues in terms of coexistence with communication systems, e.g., those based on powerline communications. This is due to the high-frequency noise currents, conducted emissions (CE), which, generated by power electronics devices, can propagate along the network through power cables. With the objective to provide guidelines to assure coexistence with communications systems, in this work a LV/MV distribution network is modelled and simulated in the frequency domain to predict the noise in different branches and to identify the factors that mostly affect CE propagation. The analysis mainly focuses on the effects due to power cables, and puts in evidence the need for their accurate modelling through transmission line theory in order to account for different cable features, such as per-unit-length parameters, cable length, and terminal conditions, which influence CE propagation.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129865038","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808745
Yeying Chen, A. Dubowik, E. Mohns
This paper describes the reference system for current sensor calibrations at power frequency and for wideband frequencies. The reference system is lately used for researches at PTB in the frame of two European projects: "IT4PQ - Measurement methods and test procedures for assessing the accuracy of instrument transformers for power quality measurements" and "WindEFCY - Traceable mechanical and electrical power measurement for efficiency determination of wind turbines". The relevant standards of IEC61000 were used for the power quality related tests. The proposed calibration system was validated for current sensor calibrations with the expanded uncertainties (k = 2) below 20 μA/A and 10 µrad at 50 Hz up to 5 kA and 0.01 % and 0.04 crad for the frequencies up to 9 kHz. Additionally, a centring unit for the Rogowski coil improved the measurement uncertainty 10-fold.
{"title":"Reference system for current sensor calibrations at power frequency and for wideband frequencies","authors":"Yeying Chen, A. Dubowik, E. Mohns","doi":"10.1109/ICHQP53011.2022.9808745","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808745","url":null,"abstract":"This paper describes the reference system for current sensor calibrations at power frequency and for wideband frequencies. The reference system is lately used for researches at PTB in the frame of two European projects: \"IT4PQ - Measurement methods and test procedures for assessing the accuracy of instrument transformers for power quality measurements\" and \"WindEFCY - Traceable mechanical and electrical power measurement for efficiency determination of wind turbines\". The relevant standards of IEC61000 were used for the power quality related tests. The proposed calibration system was validated for current sensor calibrations with the expanded uncertainties (k = 2) below 20 μA/A and 10 µrad at 50 Hz up to 5 kA and 0.01 % and 0.04 crad for the frequencies up to 9 kHz. Additionally, a centring unit for the Rogowski coil improved the measurement uncertainty 10-fold.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121512698","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808573
O. Lennerhag, Gustav Sundberg, Robert Rogersten, Stefan Råström
Time domain simulations can be used to study complex problems such as resonant overvoltages following transformer saturation. However, it is often too time consuming to use time domain tools to assess the risk. Therefore, this work develops an impedance-based criterion for efficient analysis of resonant overvoltages in the Swedish transmission system. To develop the impedance-based criterion, two study cases are considered: a heavily cablified urban network, and future connection of offshore wind in a weaker part of the network. The overvoltage stress is evaluated considering thermal and dielectric sensitivities of the various components. The selected impedance limits were found to be in line with those used by other transmission network operators.
{"title":"Towards an Impedance-Based Criterion for Efficient Analysis of Resonant Overvoltages in the Swedish Transmission System","authors":"O. Lennerhag, Gustav Sundberg, Robert Rogersten, Stefan Råström","doi":"10.1109/ICHQP53011.2022.9808573","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808573","url":null,"abstract":"Time domain simulations can be used to study complex problems such as resonant overvoltages following transformer saturation. However, it is often too time consuming to use time domain tools to assess the risk. Therefore, this work develops an impedance-based criterion for efficient analysis of resonant overvoltages in the Swedish transmission system. To develop the impedance-based criterion, two study cases are considered: a heavily cablified urban network, and future connection of offshore wind in a weaker part of the network. The overvoltage stress is evaluated considering thermal and dielectric sensitivities of the various components. The selected impedance limits were found to be in line with those used by other transmission network operators.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115550450","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}
Pub Date : 2022-05-29DOI: 10.1109/ICHQP53011.2022.9808563
G. Frigo, J. Braun
In recent years, low-voltage DC (LVDC) grids allow for a more efficient and sustainable integration of renewable energy sources. In order to facilitate such transition, though, several normative and metrological aspects need to be addressed. In particular, the calibration and type-testing of DC power and energy meters shall rely on traceable reference systems, capable of assessing the meters’ performance in nominal and distorted conditions. This represents a preliminary yet crucial step towards the actual deployment of LVDC grids in modern power systems. In this paper, we present the design of a DC power reference system and discuss the main implementation challenges. In this regard, we identify the most significant uncertainty sources and propose ad hoc measurement procedures and hardware solutions to minimize their contributions.
{"title":"Measurement Setup for a DC Power Reference for Electricity Meter Calibration","authors":"G. Frigo, J. Braun","doi":"10.1109/ICHQP53011.2022.9808563","DOIUrl":"https://doi.org/10.1109/ICHQP53011.2022.9808563","url":null,"abstract":"In recent years, low-voltage DC (LVDC) grids allow for a more efficient and sustainable integration of renewable energy sources. In order to facilitate such transition, though, several normative and metrological aspects need to be addressed. In particular, the calibration and type-testing of DC power and energy meters shall rely on traceable reference systems, capable of assessing the meters’ performance in nominal and distorted conditions. This represents a preliminary yet crucial step towards the actual deployment of LVDC grids in modern power systems. In this paper, we present the design of a DC power reference system and discuss the main implementation challenges. In this regard, we identify the most significant uncertainty sources and propose ad hoc measurement procedures and hardware solutions to minimize their contributions.","PeriodicalId":249133,"journal":{"name":"2022 20th International Conference on Harmonics & Quality of Power (ICHQP)","volume":"37 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115824244","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}
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