Due to climate change and global warming, high-impact, low-probability events such as floods, hurricanes, and earthquakes have been observed to occur with increased intensity, posing a serious threat to the operation of critical power system infrastructures. It is imperative to enhance the resilience of the electric power distribution network (PDN) against such events. This paper aims to achieve two objectives: first, to present a new model that characterizes the risk of damage to various PDN components due to an earthquake, and second, to classify the PDN components based on their exposure to seismic stressors. Drawing on current seismology standards, this study establishes a novel fragility curve for more prevalent PDN configurations, including sectionalized single busbar, main and transfer bus, and one-and-a-half breaker arrangements. The proposed methodology accounts for significant uncertainties regarding earthquake magnitude, its epicenter location, individual equipment impacts, and the overall performance of the PDN. As a result, a risk map is produced that outlines the infrastructure at risk in the event of an earthquake. Additionally, a new resilience metric is introduced to quantify the PDN's capacity to withstand seismic forces, enabling the quantification of the PDN's performance during seismic events.
{"title":"Seismic Resilience Assessment of Electric Power Distribution Networks","authors":"Farshad Amani-Jouneghani;Mahmud Fotuhi-Firuzabad;Moein Moeini-Aghtaie;Payman Dehghanian","doi":"10.1109/TPWRD.2024.3502211","DOIUrl":"10.1109/TPWRD.2024.3502211","url":null,"abstract":"Due to climate change and global warming, high-impact, low-probability events such as floods, hurricanes, and earthquakes have been observed to occur with increased intensity, posing a serious threat to the operation of critical power system infrastructures. It is imperative to enhance the resilience of the electric power distribution network (PDN) against such events. This paper aims to achieve two objectives: first, to present a new model that characterizes the risk of damage to various PDN components due to an earthquake, and second, to classify the PDN components based on their exposure to seismic stressors. Drawing on current seismology standards, this study establishes a novel fragility curve for more prevalent PDN configurations, including sectionalized single busbar, main and transfer bus, and one-and-a-half breaker arrangements. The proposed methodology accounts for significant uncertainties regarding earthquake magnitude, its epicenter location, individual equipment impacts, and the overall performance of the PDN. As a result, a risk map is produced that outlines the infrastructure at risk in the event of an earthquake. Additionally, a new resilience metric is introduced to quantify the PDN's capacity to withstand seismic forces, enabling the quantification of the PDN's performance during seismic events.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"387-397"},"PeriodicalIF":3.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-18DOI: 10.1109/TPWRD.2024.3495556
Sourav Mitra;Saurav Pramanik
This paper presents new analytical expressions for equivalent inductance, total ground capacitance of individual HV and LV windings, and inter-winding capacitance within an isolated HV-LV winding assembly. These expressions directly link the parameters to the coefficients of five specific composite driving-point admittance functions, each tailored for specific terminal configuration within the assembly. A specific ratio of two coefficients from the fitted rational function for each measured magnitude response at the line-end of HV and LV windings directly yields the equivalent inductance of each winding. Similarly, three other specific ratios of two coefficients, extracted from fitted rational functions of three other measured responses (two from HV terminal and one from LV), yield three equations, solving which determines three capacitances (inter-winding and ground capacitances of HV and LV winding). More importantly, this method remains invariant for estimating these parameters of two windings both in healthy and fault-conditions. Changes in inductance or capacitance identify the faulty winding(s) and also assist in identifying the specific fault types. Experimental validation on a 33/11 kV winding assembly with core shows promising results for various faults viz. inter-turn shorting, disk-space variation, and radial deformation, demonstrating the method's accuracy in estimation and fault-analysis.
{"title":"Parametric Evaluation for Comprehensive Fault Analysis in an Isolated HV-LV Winding Assembly Using Composite Frequency Response","authors":"Sourav Mitra;Saurav Pramanik","doi":"10.1109/TPWRD.2024.3495556","DOIUrl":"10.1109/TPWRD.2024.3495556","url":null,"abstract":"This paper presents new analytical expressions for equivalent inductance, total ground capacitance of individual HV and LV windings, and inter-winding capacitance within an isolated HV-LV winding assembly. These expressions directly link the parameters to the coefficients of five specific composite driving-point admittance functions, each tailored for specific terminal configuration within the assembly. A specific ratio of two coefficients from the fitted rational function for each measured magnitude response at the line-end of HV and LV windings directly yields the equivalent inductance of each winding. Similarly, three other specific ratios of two coefficients, extracted from fitted rational functions of three other measured responses (two from HV terminal and one from LV), yield three equations, solving which determines three capacitances (inter-winding and ground capacitances of HV and LV winding). More importantly, this method remains invariant for estimating these parameters of two windings both in healthy and fault-conditions. Changes in inductance or capacitance identify the faulty winding(s) and also assist in identifying the specific fault types. Experimental validation on a 33/11 kV winding assembly with core shows promising results for various faults viz. inter-turn shorting, disk-space variation, and radial deformation, demonstrating the method's accuracy in estimation and fault-analysis.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"353-364"},"PeriodicalIF":3.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-18DOI: 10.1109/TPWRD.2024.3500364
Heiner Brakelmann;George J. Anders;Maciej Mroz
The thermal resistivities of the soil and backfill have decisive effects on the current rating of underground cables. An important factor is the possible formation of dry zones around the power cables due to moisture migration induced by thermal and moisture gradients. Whereas a calculation method for stationary and cyclic loads are described in the literature, there are no analytical methods for modeling of moisture migration taking into account changes in the load current over time. This is the main topic presented in this paper. A new analytical approach is presented in the paper, which allows analysis of the soil dryout phenomenon and its effect on cable rating when the cables are subjected to the load varying over time. The paper also reviews the existing two-zone model for the representation of the soil dryout phenomenon in the steady state cable rating calculations. The new developments introduced in this paper are illustrated by several numerical examples.
{"title":"Transient Behavior of Power Cables Considering Partial Drying Out of the Soil","authors":"Heiner Brakelmann;George J. Anders;Maciej Mroz","doi":"10.1109/TPWRD.2024.3500364","DOIUrl":"10.1109/TPWRD.2024.3500364","url":null,"abstract":"The thermal resistivities of the soil and backfill have decisive effects on the current rating of underground cables. An important factor is the possible formation of dry zones around the power cables due to moisture migration induced by thermal and moisture gradients. Whereas a calculation method for stationary and cyclic loads are described in the literature, there are no analytical methods for modeling of moisture migration taking into account changes in the load current over time. This is the main topic presented in this paper. A new analytical approach is presented in the paper, which allows analysis of the soil dryout phenomenon and its effect on cable rating when the cables are subjected to the load varying over time. The paper also reviews the existing two-zone model for the representation of the soil dryout phenomenon in the steady state cable rating calculations. The new developments introduced in this paper are illustrated by several numerical examples.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"376-386"},"PeriodicalIF":3.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-15DOI: 10.1109/tpwrd.2024.3496998
Long Zhuo, Xu ZhiYuan, Wu Gongping, Deng Feng, Chen Xiangyuan, Feng Wenshan, Huang Zhiwen
{"title":"Parallel Spatial-Temporal Graph Attention Network for Short Term Multi-Sequence Load Forecasting","authors":"Long Zhuo, Xu ZhiYuan, Wu Gongping, Deng Feng, Chen Xiangyuan, Feng Wenshan, Huang Zhiwen","doi":"10.1109/tpwrd.2024.3496998","DOIUrl":"https://doi.org/10.1109/tpwrd.2024.3496998","url":null,"abstract":"","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"7 1","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1109/TPWRD.2024.3495229
S. C. Zhao;X. Zhang;Q. Liu;Z. D. Wang;M. Negro;M. Daghrah;E. Van Schaik
The liquid temperatures and velocities are of great importance for estimating the hot-spot temperature (HST) within the transformer windings. For liquid natural cooled power transformers (ON/KN), the liquid temperatures and velocities can only be obtained by modelling the complete-cooling-loop (CCL), which refers to the insulating liquid circulation between the windings and the radiators. In this paper, a CCL based computational fluid dynamics (CFD) model was developed for determining the liquid temperatures and velocities in the natural cooling mode. The validities of the CCL CFD simulations were verified by conducting experiments under different loading conditions, at different thermal heads and of different insulating liquids. The experimentally verified simulation results showed that the top liquid temperature increases exponentially against the power loss, whereas the bottom liquid temperature increases linearly against the power loss. The liquid velocity is in an approximately linear relationship against the square root of the product of the power loss and the thermal head. Moreover, the thermal performances of different insulating liquids were investigated. The dominating material property for the liquid thermal performance of an ON/KN transformer is the dynamic viscosity. For different liquids, the closer the dynamic viscosity, the better matching of the liquid temperatures and velocities.
{"title":"Investigation of Liquid Temperatures and Velocities at Winding Inlet in Natural Cooled Transformers Through Complete-Cooling-Loop Based CFD Simulations and Experiments","authors":"S. C. Zhao;X. Zhang;Q. Liu;Z. D. Wang;M. Negro;M. Daghrah;E. Van Schaik","doi":"10.1109/TPWRD.2024.3495229","DOIUrl":"10.1109/TPWRD.2024.3495229","url":null,"abstract":"The liquid temperatures and velocities are of great importance for estimating the hot-spot temperature (HST) within the transformer windings. For liquid natural cooled power transformers (ON/KN), the liquid temperatures and velocities can only be obtained by modelling the complete-cooling-loop (CCL), which refers to the insulating liquid circulation between the windings and the radiators. In this paper, a CCL based computational fluid dynamics (CFD) model was developed for determining the liquid temperatures and velocities in the natural cooling mode. The validities of the CCL CFD simulations were verified by conducting experiments under different loading conditions, at different thermal heads and of different insulating liquids. The experimentally verified simulation results showed that the top liquid temperature increases exponentially against the power loss, whereas the bottom liquid temperature increases linearly against the power loss. The liquid velocity is in an approximately linear relationship against the square root of the product of the power loss and the thermal head. Moreover, the thermal performances of different insulating liquids were investigated. The dominating material property for the liquid thermal performance of an ON/KN transformer is the dynamic viscosity. For different liquids, the closer the dynamic viscosity, the better matching of the liquid temperatures and velocities.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"343-352"},"PeriodicalIF":3.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10752914","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1109/TPWRD.2024.3498436
Jie Wang;Geng Chen;Qiang Zhang;You-ping Tu
The presence of micro-discharges, which is caused by micro-protrusions or conductor surface roughness, was a potential hazard leading to non-uniform charging at the gas-solid interface of the insulators in DC gas-insulated equipment. It is crucial and necessary to measure micro-discharges. However, the low sensitivity of conventional methods limits their measurement range. In this letter, a highly sensitive wideband DC micro-discharges measurement method based on the optimized subdivided electrode system has been achieved. Synchronous measurements using ultra-high frequency (UHF) and photon counting were conducted to evaluate the performance of this method. Results show that this method realizes the highly sensitive measurement as low as 0.02 pC. The integrated charge differs from the injected charge of the calibrator by only 0.6% and achieves lower partial discharge inception voltage (PDIV) compared with other methods.
{"title":"Highly Sensitive Wideband Measurement Method of DC Micro-Discharges Based on Optimized Subdivided Electrode System","authors":"Jie Wang;Geng Chen;Qiang Zhang;You-ping Tu","doi":"10.1109/TPWRD.2024.3498436","DOIUrl":"10.1109/TPWRD.2024.3498436","url":null,"abstract":"The presence of micro-discharges, which is caused by micro-protrusions or conductor surface roughness, was a potential hazard leading to non-uniform charging at the gas-solid interface of the insulators in DC gas-insulated equipment. It is crucial and necessary to measure micro-discharges. However, the low sensitivity of conventional methods limits their measurement range. In this letter, a highly sensitive wideband DC micro-discharges measurement method based on the optimized subdivided electrode system has been achieved. Synchronous measurements using ultra-high frequency (UHF) and photon counting were conducted to evaluate the performance of this method. Results show that this method realizes the highly sensitive measurement as low as 0.02 pC. The integrated charge differs from the injected charge of the calibrator by only 0.6% and achieves lower partial discharge inception voltage (PDIV) compared with other methods.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"651-654"},"PeriodicalIF":3.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1109/TPWRD.2024.3498450
Abdullahi Bamigbade;Francisco de León
Active power filters (APFs) play a crucial role in improving power quality in grid networks. They mitigate load's harmonic and reactive currents, ensuring unity power factor grid operation with sinusoidal currents. However, the accuracy of compensation provided by APFs can be compromised due to the vulnerability of their control parameters to adversarial manipulations. In this letter, we investigate, detect and mitigate such vulnerabilities within the framework of a recently proposed dual cascaded second-order time-delay filter for APFs. Our findings reveal that if exploited, these vulnerabilities can lead to increased power losses in APFs and significant degradation in the grid power factor. This study emphasizes the critical need to integrate security considerations into APF design, thereby enhancing their resilience against events such as adversarial parameter manipulation attacks.
{"title":"Secure Implementation of Active Power Filters Using a Dual Cascaded Second-Order Time-Delay Filter","authors":"Abdullahi Bamigbade;Francisco de León","doi":"10.1109/TPWRD.2024.3498450","DOIUrl":"10.1109/TPWRD.2024.3498450","url":null,"abstract":"Active power filters (APFs) play a crucial role in improving power quality in grid networks. They mitigate load's harmonic and reactive currents, ensuring unity power factor grid operation with sinusoidal currents. However, the accuracy of compensation provided by APFs can be compromised due to the vulnerability of their control parameters to adversarial manipulations. In this letter, we investigate, detect and mitigate such vulnerabilities within the framework of a recently proposed dual cascaded second-order time-delay filter for APFs. Our findings reveal that if exploited, these vulnerabilities can lead to increased power losses in APFs and significant degradation in the grid power factor. This study emphasizes the critical need to integrate security considerations into APF design, thereby enhancing their resilience against events such as adversarial parameter manipulation attacks.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"655-658"},"PeriodicalIF":3.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-13DOI: 10.1109/TPWRD.2024.3495228
T. Herath;Z.D. Wang;Q. Liu;G. Wilson;R. Hooton;T. Raymond
Trend detection in Dissolved Gas Analysis (DGA) data is crucial for diagnosing the health of transformer insulation systems. The complexity of this task arises from gas level fluctuations, varying DGA monitoring frequencies and changes in gas patterns over time. This paper presents a novel automated trend detection technique based on the Mann-Kendall test, tailored for large-scale industrial DGA databases. The technique not only identifies trends but also quantifies the confidence levels of these trends, providing more detailed insights for transformer asset managers. An example application on a substantial DGA database from transmission power transformers, including in-service units and those with dielectric faults, overheating in winding and overheating of elements outside of winding, reveals distinct trend characteristics. The proposed technique serves as an automated asset management tool, facilitating rapid scanning of large DGA databases for improved DGA data interpretation and utilisation.
{"title":"Development of Trend Detection Technique for Dissolved Gas Analysis of Transmission Power Transformers","authors":"T. Herath;Z.D. Wang;Q. Liu;G. Wilson;R. Hooton;T. Raymond","doi":"10.1109/TPWRD.2024.3495228","DOIUrl":"10.1109/TPWRD.2024.3495228","url":null,"abstract":"Trend detection in Dissolved Gas Analysis (DGA) data is crucial for diagnosing the health of transformer insulation systems. The complexity of this task arises from gas level fluctuations, varying DGA monitoring frequencies and changes in gas patterns over time. This paper presents a novel automated trend detection technique based on the Mann-Kendall test, tailored for large-scale industrial DGA databases. The technique not only identifies trends but also quantifies the confidence levels of these trends, providing more detailed insights for transformer asset managers. An example application on a substantial DGA database from transmission power transformers, including in-service units and those with dielectric faults, overheating in winding and overheating of elements outside of winding, reveals distinct trend characteristics. The proposed technique serves as an automated asset management tool, facilitating rapid scanning of large DGA databases for improved DGA data interpretation and utilisation.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"332-342"},"PeriodicalIF":3.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10752917","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-11DOI: 10.1109/TPWRD.2024.3488374
Derek C. Neal;Dan J. Rogers
The distributed-element transmission line model is modified to account for proximity effects in multiconductor cables and frequency dependent dielectric behaviour providing an accurate prediction of channel attenuation at broadband power line communication frequencies (1–100 MHz). The modified model is verified with scattering parameter measurements and then used as a building block for complex microgrid network modelling. Powerline communication performance tests are conducted using the HomePlug GreenPHY and HomePlug AV. The AV operates successfully up to 600 m on star feeders and on complex radial feeders in the presence of power converter noise. The GreenPHY operates up to 450 m on star feeders and on radial feeders with long branches. However, it cannot connect reliably on radial feeders with short branches due to frequency selective notching. Functionality requires link attenuation less than −60 dB at 30 MHz and the absence of notches that penetrate below −70 dB within the band (1.8–30 MHz). Due to the wide availability and low cost of the AV, it is a sensible choice for reliable broadband digital communications on microgrid networks.
{"title":"Broadband Powerline Communication for Low-Voltage Microgrids","authors":"Derek C. Neal;Dan J. Rogers","doi":"10.1109/TPWRD.2024.3488374","DOIUrl":"10.1109/TPWRD.2024.3488374","url":null,"abstract":"The distributed-element transmission line model is modified to account for proximity effects in multiconductor cables and frequency dependent dielectric behaviour providing an accurate prediction of channel attenuation at broadband power line communication frequencies (1–100 MHz). The modified model is verified with scattering parameter measurements and then used as a building block for complex microgrid network modelling. Powerline communication performance tests are conducted using the HomePlug GreenPHY and HomePlug AV. The AV operates successfully up to 600 m on star feeders and on complex radial feeders in the presence of power converter noise. The GreenPHY operates up to 450 m on star feeders and on radial feeders with long branches. However, it cannot connect reliably on radial feeders with short branches due to frequency selective notching. Functionality requires link attenuation less than −60 dB at 30 MHz and the absence of notches that penetrate below −70 dB within the band (1.8–30 MHz). Due to the wide availability and low cost of the AV, it is a sensible choice for reliable broadband digital communications on microgrid networks.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"215-225"},"PeriodicalIF":3.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-11DOI: 10.1109/TPWRD.2024.3495706
Sheng Lin;Dalin Mu;Lijuan Xu;Zhengyou He
In high-voltage direct current (HVDC) systems, the parameters of the AC filter (ACF) have a significant impact on the performance of reactive power (RP) compensation and filtering, as well as the capital cost. However, the RP compensation effectiveness and economy of ACFs under different HVDC operation modes are difficult to be satisfied comprehensively. Therefore, a parameter optimization method for ACFs is proposed to balance the technical performance and economy in this paper. First, considering the variety of actual HVDC operation modes, the parameters of ACFs are analyzed in relation to the performance and capital cost, which leads to the key impact factors of parameter design. Then, considering both the RP exchange quantity and the capital cost of investment and land occupation, the objective function is defined. By considering the sub-bank numbers and filtering performance of ACFs, the constraints are proposed. Finally, genetic algorithm with the elitist strategy is used to obtain the optimized ACF parameters. The comparative results show that the performance of RP compensation and filtering of the optimized ACFs is effectively improved and guaranteed, and meanwhile the capital cost is reduced.
{"title":"Parameter Optimization Method for AC Filters in HVDC Considering Reactive Power Compensation Effectiveness","authors":"Sheng Lin;Dalin Mu;Lijuan Xu;Zhengyou He","doi":"10.1109/TPWRD.2024.3495706","DOIUrl":"10.1109/TPWRD.2024.3495706","url":null,"abstract":"In high-voltage direct current (HVDC) systems, the parameters of the AC filter (ACF) have a significant impact on the performance of reactive power (RP) compensation and filtering, as well as the capital cost. However, the RP compensation effectiveness and economy of ACFs under different HVDC operation modes are difficult to be satisfied comprehensively. Therefore, a parameter optimization method for ACFs is proposed to balance the technical performance and economy in this paper. First, considering the variety of actual HVDC operation modes, the parameters of ACFs are analyzed in relation to the performance and capital cost, which leads to the key impact factors of parameter design. Then, considering both the RP exchange quantity and the capital cost of investment and land occupation, the objective function is defined. By considering the sub-bank numbers and filtering performance of ACFs, the constraints are proposed. Finally, genetic algorithm with the elitist strategy is used to obtain the optimized ACF parameters. The comparative results show that the performance of RP compensation and filtering of the optimized ACFs is effectively improved and guaranteed, and meanwhile the capital cost is reduced.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"365-375"},"PeriodicalIF":3.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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