Pub Date : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384945
Milad Sadoughi, A. Zakerian, Amirhossein Pourdadashnia, M. Farhadi‐Kangarlu
Due to multilevel inverters' diverse applications in many contexts such as electric vehicles as well as motor drives, a wide output voltage range with low total harmonic distortion is significantly important. There are different methods to reduce harmonic distortion, like selective harmonic elimination (SHE). In this method, by some evolutionary algorithms, the low-order harmonics can be eliminated or minimized. However, in a low modulation index (for example 0.1 to 0.5), the mentioned harmonics have a considerable amplitude and are not eliminated, which increases the harmonic distortion in the output voltage and current. In order to solve the mentioned problem, a method is proposed in this paper. The proposed method is based on reducing the dc-link voltage of the cascaded H-bridge (CHB) multilevel inverter when a low output voltage is required. Therefore, even when the output voltage is low, the modulation index will be high enough which leads to a decrease in the harmonic distortion. The proposed method is examined on a PSO-based SHE-PWM seven-level CHB inverter using simulation in MATLAB software. The results indicate a considerable improvement of the output waveform quality in the case of low output voltage values.
{"title":"Selective Harmonic Elimination PWM for Cascaded H-bridge Multilevel Inverter with Wide Output Voltage Range Using PSO Algorithm","authors":"Milad Sadoughi, A. Zakerian, Amirhossein Pourdadashnia, M. Farhadi‐Kangarlu","doi":"10.1109/TPEC51183.2021.9384945","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384945","url":null,"abstract":"Due to multilevel inverters' diverse applications in many contexts such as electric vehicles as well as motor drives, a wide output voltage range with low total harmonic distortion is significantly important. There are different methods to reduce harmonic distortion, like selective harmonic elimination (SHE). In this method, by some evolutionary algorithms, the low-order harmonics can be eliminated or minimized. However, in a low modulation index (for example 0.1 to 0.5), the mentioned harmonics have a considerable amplitude and are not eliminated, which increases the harmonic distortion in the output voltage and current. In order to solve the mentioned problem, a method is proposed in this paper. The proposed method is based on reducing the dc-link voltage of the cascaded H-bridge (CHB) multilevel inverter when a low output voltage is required. Therefore, even when the output voltage is low, the modulation index will be high enough which leads to a decrease in the harmonic distortion. The proposed method is examined on a PSO-based SHE-PWM seven-level CHB inverter using simulation in MATLAB software. The results indicate a considerable improvement of the output waveform quality in the case of low output voltage values.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115379864","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384932
T. Kerdphol, Masayuki Watanabe, Rintaro Nishikawa, Takahiro Tamaki, Y. Mitani
System inertia is an important part of evaluating the initial frequency drop after a disturbance. Low system inertia driven by high levels of inverter interfaced renewable energy sources (RESs) results in large frequency drops, which significantly lead to violation of frequency safety thresholds. Thus, enhancing operator awareness of system inertia would preserve high-quality frequency regulation in the system with RESs. This work presents a practical study of inertia estimation of the 60 Hz Japan power system using phasor measurement units (PMUs) and the recorded disturbance (i.e., active power loss). Using phasor data provided by eight PMUs in a longitudinal transmission network, the frequency and rate of change of frequency (ROCOF) values from each significant area are analyzed to estimate accurate system inertia based on frequency spectrum and mode shape analysis. The obtained results indicate that not all PMUs can provide inertia estimation with accuracy due to the effect of interarea oscillation. Evidentially, the accurate latency of inertia estimation could be found at the PMUs installed around the center of inertia frequency.
{"title":"Determining Inertia of 60 Hz Japan Power System using PMUs from Power Loss Event","authors":"T. Kerdphol, Masayuki Watanabe, Rintaro Nishikawa, Takahiro Tamaki, Y. Mitani","doi":"10.1109/TPEC51183.2021.9384932","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384932","url":null,"abstract":"System inertia is an important part of evaluating the initial frequency drop after a disturbance. Low system inertia driven by high levels of inverter interfaced renewable energy sources (RESs) results in large frequency drops, which significantly lead to violation of frequency safety thresholds. Thus, enhancing operator awareness of system inertia would preserve high-quality frequency regulation in the system with RESs. This work presents a practical study of inertia estimation of the 60 Hz Japan power system using phasor measurement units (PMUs) and the recorded disturbance (i.e., active power loss). Using phasor data provided by eight PMUs in a longitudinal transmission network, the frequency and rate of change of frequency (ROCOF) values from each significant area are analyzed to estimate accurate system inertia based on frequency spectrum and mode shape analysis. The obtained results indicate that not all PMUs can provide inertia estimation with accuracy due to the effect of interarea oscillation. Evidentially, the accurate latency of inertia estimation could be found at the PMUs installed around the center of inertia frequency.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116936320","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384965
M. Pramanik, T. K. Roy, S. K. Ghosh, M. S. Anower, M. A. Mahmud
In this paper, a robust partial feedback linearizing excitation controller is designed for synchronous generators to enhance the transient stability of single machine infinite bus (SMIB) power systems. The seventh-order dynamical model of synchronous generators including dynamic characteristics of IEEE Type-II exciters are taken into consideration to design this robust excitation controller. Uncertainties associated with both parameters and states are taken into account during the controller design while bounding these uncertainties such that matching conditions are satisfied. In addition, measurement noises are incorporated within the system model which are decoupled through the proposed control scheme and the robustness is ensured through against these noises. The partial feedback linearization method is employed to transform the nonlinear dynamical model into a partially linear system which is then used to design the auxiliary excitation control input for the synchronous generator in an SMIB system. The performance of the proposed excitation control scheme is analyzed on an SMIB system following large disturbances including a comparative study with a conventional power system stabilizer (PSS).
{"title":"Robust Partial Feedback Linearizing Excitation Controller Design for Higher-Order Synchronous Generator in SMIB Systems to Improve the Transient Stability","authors":"M. Pramanik, T. K. Roy, S. K. Ghosh, M. S. Anower, M. A. Mahmud","doi":"10.1109/TPEC51183.2021.9384965","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384965","url":null,"abstract":"In this paper, a robust partial feedback linearizing excitation controller is designed for synchronous generators to enhance the transient stability of single machine infinite bus (SMIB) power systems. The seventh-order dynamical model of synchronous generators including dynamic characteristics of IEEE Type-II exciters are taken into consideration to design this robust excitation controller. Uncertainties associated with both parameters and states are taken into account during the controller design while bounding these uncertainties such that matching conditions are satisfied. In addition, measurement noises are incorporated within the system model which are decoupled through the proposed control scheme and the robustness is ensured through against these noises. The partial feedback linearization method is employed to transform the nonlinear dynamical model into a partially linear system which is then used to design the auxiliary excitation control input for the synchronous generator in an SMIB system. The performance of the proposed excitation control scheme is analyzed on an SMIB system following large disturbances including a comparative study with a conventional power system stabilizer (PSS).","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"179 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120945113","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384973
L. Vanfretti, Emmett Williamson, Prottay M. Adhikari, Jordan Grey, Jerry W. Dziuba, Kevin D. Jones, J. D. Grimes, Jason Weaver, Tim Marshall, Matthew Gardner
This paper reports a mobile test-bed utilizing industry grade relays, phasor measurement units (PMU), phasor data concentrators (PDC), power quality meters and an antenna, for teaching and demonstrating real-time synchrophasor applications. This test-bed was accompanied with a configurable current and voltage source setup on National Instruments' compact reconfigurable input/output (cRIO) platform and a conventional PC that hosts all the software used to interface with the hardware present in the system, which can be used for demonstration and teaching of all technologies included.
{"title":"A Mobile Test-Bed for Synchrophasor Technologies Teaching and Demonstration","authors":"L. Vanfretti, Emmett Williamson, Prottay M. Adhikari, Jordan Grey, Jerry W. Dziuba, Kevin D. Jones, J. D. Grimes, Jason Weaver, Tim Marshall, Matthew Gardner","doi":"10.1109/TPEC51183.2021.9384973","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384973","url":null,"abstract":"This paper reports a mobile test-bed utilizing industry grade relays, phasor measurement units (PMU), phasor data concentrators (PDC), power quality meters and an antenna, for teaching and demonstrating real-time synchrophasor applications. This test-bed was accompanied with a configurable current and voltage source setup on National Instruments' compact reconfigurable input/output (cRIO) platform and a conventional PC that hosts all the software used to interface with the hardware present in the system, which can be used for demonstration and teaching of all technologies included.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124917059","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384984
Kamal Basulaiman, M. Barati
Power system state forecasting has gained more attention in real-time operations recently. Unique challenges to energy systems are emerging with the massive deployment of renewable energy resources. As a result, power system state forecasting are becoming more crucial for monitoring, operating and securing modern power systems. This paper proposes an end-to-end deep learning framework to accurately predict multi-step power system state estimations in real-time. In our model, we employ a sequence-to-sequence framework to allow for multi-step forecasting. Bidirectional gated recurrent units (BiGRUs) are incorporated into the model to achieve high prediction accuracy. The dominant performance of our model is validated using real dataset. Experimental results show the superiority of our model in predictive power compared to existing alternatives.
{"title":"Sequence-to-Sequence Forecasting-aided State Estimation for Power Systems","authors":"Kamal Basulaiman, M. Barati","doi":"10.1109/TPEC51183.2021.9384984","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384984","url":null,"abstract":"Power system state forecasting has gained more attention in real-time operations recently. Unique challenges to energy systems are emerging with the massive deployment of renewable energy resources. As a result, power system state forecasting are becoming more crucial for monitoring, operating and securing modern power systems. This paper proposes an end-to-end deep learning framework to accurately predict multi-step power system state estimations in real-time. In our model, we employ a sequence-to-sequence framework to allow for multi-step forecasting. Bidirectional gated recurrent units (BiGRUs) are incorporated into the model to achieve high prediction accuracy. The dominant performance of our model is validated using real dataset. Experimental results show the superiority of our model in predictive power compared to existing alternatives.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122136157","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384913
Ambui Sharma, S. Nag, G. Bhuvaneswari
The objective of this work is to achieve a smooth transient operation of non-isolated bidirectional dc-dc converters (BDCs), by implementing two different PWM schemes for transient and steady-state operations, respectively. These two PWM schemes also facilitate the converter operation in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The CCM and DCM modes of converter operation enables efficient control over the bidirectional power flow, especially during low power operation. Apart from this, an equation for average inductor current is derived and validated with active sources on both input and output sides. The analysis of the BDCs has been included using the switch average modeling technique. The operation of the proposed PWM schemes and the expression for the steady-state average inductor current are validated in simulation and hardware. The hardware results are obtained at 1.5 kW output power, with an input voltage of 132 V and an output voltage of 330 V for validating the concept.
{"title":"Analysis of Conventional Non-isolated Bidirectional Converters with Smooth Transient Operation","authors":"Ambui Sharma, S. Nag, G. Bhuvaneswari","doi":"10.1109/TPEC51183.2021.9384913","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384913","url":null,"abstract":"The objective of this work is to achieve a smooth transient operation of non-isolated bidirectional dc-dc converters (BDCs), by implementing two different PWM schemes for transient and steady-state operations, respectively. These two PWM schemes also facilitate the converter operation in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The CCM and DCM modes of converter operation enables efficient control over the bidirectional power flow, especially during low power operation. Apart from this, an equation for average inductor current is derived and validated with active sources on both input and output sides. The analysis of the BDCs has been included using the switch average modeling technique. The operation of the proposed PWM schemes and the expression for the steady-state average inductor current are validated in simulation and hardware. The hardware results are obtained at 1.5 kW output power, with an input voltage of 132 V and an output voltage of 330 V for validating the concept.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124154399","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384990
Babak Rahrovi, Ramin Tafazzoli Mehrjardi, M. Ehsani
DC-DC converters with galvanic isolation are a key element in the aircraft DC distribution system and Dual and Triple Active Bridge converters are one of the most interesting candidates in this application. The high-frequency transformer leakage inductances play a key role in the AC Link of these converters. This leakage inductances determine the power transfer capability of the converter and shape the AC link currents. The leakage inductance value is related to the distribution of the transformer windings and it changes with the RMS value of the AC link current. In this paper, first a high frequency transformer is designed for a Dual and Triple Active Bridge converter for the More Electric Aircraft DC power system. Then, an Ansys/Maxwell Finite Element analysis is performed on the leakage inductances of the transformer in three different winding configurations and in different AC link RMS current values. Finally, the transient performance of the design is validated by the Ansys/Maxwell Transient.
{"title":"On the Analysis and Design of High-Frequency Transformers for Dual and Triple Active Bridge Converters in More Electric Aircraft","authors":"Babak Rahrovi, Ramin Tafazzoli Mehrjardi, M. Ehsani","doi":"10.1109/TPEC51183.2021.9384990","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384990","url":null,"abstract":"DC-DC converters with galvanic isolation are a key element in the aircraft DC distribution system and Dual and Triple Active Bridge converters are one of the most interesting candidates in this application. The high-frequency transformer leakage inductances play a key role in the AC Link of these converters. This leakage inductances determine the power transfer capability of the converter and shape the AC link currents. The leakage inductance value is related to the distribution of the transformer windings and it changes with the RMS value of the AC link current. In this paper, first a high frequency transformer is designed for a Dual and Triple Active Bridge converter for the More Electric Aircraft DC power system. Then, an Ansys/Maxwell Finite Element analysis is performed on the leakage inductances of the transformer in three different winding configurations and in different AC link RMS current values. Finally, the transient performance of the design is validated by the Ansys/Maxwell Transient.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123499933","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384970
S. K. Ghosh, T. K. Roy, M. Pramanik, M. A. Mahmud
In this paper, a state feedback linear quadratic regulator (LQR) controller is designed for multiple PV units which are connected to distribution networks in a networked structure instead of the point of common coupling (PCC). The proposed control scheme is designed for voltage source converters (VSCs) used with different PV units to couple with existing distribution networks. The control inputs are derived using appropriate feedback gains where an linear matrix inequality (LMI)-based LQR scheme is applied to determine these gains in such a way that tracking errors for all states are minimized. The performance of the proposed scheme is evaluated through rigorous simulations under different operating conditions and compared with a conventional proportional integral (PI) controller in terms of the capability to deliver power and minimize total harmonic distortions (THDs) in the inverter output current.
{"title":"LMI-Based Optimal Linear Quadratic Controller Design for Multiple Solar PV Units Connected to Distribution Networks","authors":"S. K. Ghosh, T. K. Roy, M. Pramanik, M. A. Mahmud","doi":"10.1109/TPEC51183.2021.9384970","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384970","url":null,"abstract":"In this paper, a state feedback linear quadratic regulator (LQR) controller is designed for multiple PV units which are connected to distribution networks in a networked structure instead of the point of common coupling (PCC). The proposed control scheme is designed for voltage source converters (VSCs) used with different PV units to couple with existing distribution networks. The control inputs are derived using appropriate feedback gains where an linear matrix inequality (LMI)-based LQR scheme is applied to determine these gains in such a way that tracking errors for all states are minimized. The performance of the proposed scheme is evaluated through rigorous simulations under different operating conditions and compared with a conventional proportional integral (PI) controller in terms of the capability to deliver power and minimize total harmonic distortions (THDs) in the inverter output current.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131763496","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384963
M. M. Mehraban Jahromi, Pooria Dehghanian, Mohammad Reza Mousavi Khademi, M. Z. Jahromi
This paper presents an optimal capacitor allocation method that uses the modified Honey Bee Mating Optimization Algorithm (HBMO) for primary distribution systems. In this practice, a capacitor allocation approach is applied to improve voltage profile and reduce power loss under constant and varying load conditions. The problem formulation of capacitor allocation includes determining the location, type, and size of the capacitor. It is a combinatorial optimization problem with the objective function composed of the cost of power loss and capacitor installation subject to bus voltage constraints. The HBMO technique can provide a globally optimum solution. Various scale application systems are used to compare the proposed method's performance with the other references to achieve an optimal or near-optimal solution. Numerical results verify the proposed algorithm's effectiveness and validate an improved performance compared to the reported literature.
{"title":"Reactive Power Compensation and Power Loss Reduction using Optimal Capacitor Placement","authors":"M. M. Mehraban Jahromi, Pooria Dehghanian, Mohammad Reza Mousavi Khademi, M. Z. Jahromi","doi":"10.1109/TPEC51183.2021.9384963","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384963","url":null,"abstract":"This paper presents an optimal capacitor allocation method that uses the modified Honey Bee Mating Optimization Algorithm (HBMO) for primary distribution systems. In this practice, a capacitor allocation approach is applied to improve voltage profile and reduce power loss under constant and varying load conditions. The problem formulation of capacitor allocation includes determining the location, type, and size of the capacitor. It is a combinatorial optimization problem with the objective function composed of the cost of power loss and capacitor installation subject to bus voltage constraints. The HBMO technique can provide a globally optimum solution. Various scale application systems are used to compare the proposed method's performance with the other references to achieve an optimal or near-optimal solution. Numerical results verify the proposed algorithm's effectiveness and validate an improved performance compared to the reported literature.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132945666","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 : 2021-02-02DOI: 10.1109/TPEC51183.2021.9384992
M. Asadi, Hassan Shokouhandeh, F. Rahmani, Seyyed Mohamdreza Hamzehnia, Mehrshad Noori Harikandeh, Hamid Ghobadi Lamouki, Fariba Asghari
In this paper, the optimal sizing and locating of capacitor banks in a 15-bus standard distribution network with harmonic effects consideration has been studied. The goal was finding the size and location of capacitor banks with power loss reduction approach and voltage stability improvement in the network. Considered constraints in optimization are capacity of capacitor banks, voltage limitation, and total harmonic distortion (THD) limit. Due to the nonlinear nature of the capacitor placement problems in the distribution network, non-linear methods should be used. Thus, the Harmony Search Algorithm (HS) has been used to achieve this goal. In simulations, first, by using the Power Loss Index (PLI) on the buses, locations of the banks were determined and then, using the HS algorithm, the appropriate capacities of the banks are calculated. Two scenarios are studied in this paper. In first scenario, it is assumed that there is no harmonic in the network, and in the second scenario, studies are conducted in the presence of harmonic loads. The results indicate that considering harmonics in the capacitor placement problem will have a noticeable influence on the network characteristics, hence it must be considered in studies.
{"title":"Optimal Placement and Sizing of Capacitor Banks in Harmonic Polluted Distribution Network","authors":"M. Asadi, Hassan Shokouhandeh, F. Rahmani, Seyyed Mohamdreza Hamzehnia, Mehrshad Noori Harikandeh, Hamid Ghobadi Lamouki, Fariba Asghari","doi":"10.1109/TPEC51183.2021.9384992","DOIUrl":"https://doi.org/10.1109/TPEC51183.2021.9384992","url":null,"abstract":"In this paper, the optimal sizing and locating of capacitor banks in a 15-bus standard distribution network with harmonic effects consideration has been studied. The goal was finding the size and location of capacitor banks with power loss reduction approach and voltage stability improvement in the network. Considered constraints in optimization are capacity of capacitor banks, voltage limitation, and total harmonic distortion (THD) limit. Due to the nonlinear nature of the capacitor placement problems in the distribution network, non-linear methods should be used. Thus, the Harmony Search Algorithm (HS) has been used to achieve this goal. In simulations, first, by using the Power Loss Index (PLI) on the buses, locations of the banks were determined and then, using the HS algorithm, the appropriate capacities of the banks are calculated. Two scenarios are studied in this paper. In first scenario, it is assumed that there is no harmonic in the network, and in the second scenario, studies are conducted in the presence of harmonic loads. The results indicate that considering harmonics in the capacitor placement problem will have a noticeable influence on the network characteristics, hence it must be considered in studies.","PeriodicalId":354018,"journal":{"name":"2021 IEEE Texas Power and Energy Conference (TPEC)","volume":"15 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132703616","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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