IEEE Transactions on Power Delivery最新文献_第10页

Model-Based Power Transformer Protection Using Interactive Multiple Model Algorithm 使用交互式多重模型算法的基于模型的电力变压器保护

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-19 DOI: 10.1109/TPWRD.2024.3502397

Saeed Nikbakhsh Jahromi;Ehsan Hajipour;Mehdi Ehsan

{"title":"Model-Based Power Transformer Protection Using Interactive Multiple Model Algorithm","authors":"Saeed Nikbakhsh Jahromi;Ehsan Hajipour;Mehdi Ehsan","doi":"10.1109/TPWRD.2024.3502397","DOIUrl":"10.1109/TPWRD.2024.3502397","url":null,"abstract":"In a centralized protection and control substation (CPC), all of the measurements of the substation, includes voltages and currents, are available to its centralized high-performance processor. This paper proposes a model-based algorithm for protection of the power transformer in a CPC-based substation. The main difficulty in the use of conventional model-based algorithms lies in modeling of the nonlinear behavior of the transformer core. To tackle this problem, in this paper, multiple linear models are employed to simulate the nonlinearity of the magnetic core. At each time instance, the dynamic behavior of the transformer will be followed by one of these linear models and, the proposed algorithm switches between these linear models based on the concept of interactive multiple model (IMM) algorithm. This way, not only the accuracy of the proposed algorithm increases but also the computational burden is significantly reduced compared to conventional model-based algorithms. Therefore, the proposed algorithm has better potential to be implemented in real-world microprocessors. Several experimental tests include turn-to-turn (TTF) and turn-to-ground faults (TGFs) have been employed to reveal the effectiveness of the proposed IMM-based protection algorithm.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"410-422"},"PeriodicalIF":3.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673491","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}

引用次数: 0

Geomagnetically Induced Current Field Test on Large Grid-Connected Power Transformers: Analysis, Model Development, and Simulations 大型并网电力变压器的地磁诱导电流现场测试：分析、模型开发和模拟

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-19 DOI: 10.1109/TPWRD.2024.3502642

Adedasola A. Ademola;Roland B. Brandis;Andreas F. Schuetzinger;Bart Simons;Luc Dorpmanns;Andrea Pinceti;Katelynn D. Vance;Ibukunoluwa O. Korede;Robert M. Orndorff;Micah J. Till;Kyle D. Hannah;Mike Lamb;R. Matthew Gardner;Yilu Liu

{"title":"Geomagnetically Induced Current Field Test on Large Grid-Connected Power Transformers: Analysis, Model Development, and Simulations","authors":"Adedasola A. Ademola;Roland B. Brandis;Andreas F. Schuetzinger;Bart Simons;Luc Dorpmanns;Andrea Pinceti;Katelynn D. Vance;Ibukunoluwa O. Korede;Robert M. Orndorff;Micah J. Till;Kyle D. Hannah;Mike Lamb;R. Matthew Gardner;Yilu Liu","doi":"10.1109/TPWRD.2024.3502642","DOIUrl":"10.1109/TPWRD.2024.3502642","url":null,"abstract":"Geomagnetic-induced current (GIC) flow in power grids can cause undesirable effects such as transformer overheating, harmonics, higher reactive power demand, etc. Many simulation models have been developed to study these effects, but real-world verification on modern transformer designs is rare. This paper presents the first long-duration GIC field test in the U.S. performed on high-voltage, grid-connected transformers featuring winding clamps and tie rods instead of conventional tie bars. Field measurements were taken to evaluate GIC effects. These measurements also aided in developing and validating thermal and electromagnetic transient (EMT) models of the transformers. During the test, significant current and voltage distortions were observed along with considerable transformer reactive power losses. Analysis of the field measurements showed that the transformers’ hottest spot was at the inner windings, and their <italic>k</i>-factors were close to factory test and software default values. Thermal simulations indicated that the transformers would not violate their thermal limits even for a GIC waveform that peaks at about 200 A/phase. EMT simulations revealed that increased transformer loading may reduce GIC-induced reactive power demand and harmonics in certain scenarios. The study also highlighted potential inaccuracies in using the <italic>k</i>-factor method to calculate transformer reactive power losses.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"447-458"},"PeriodicalIF":3.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673488","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}

引用次数: 0

Analytical and FEM-Based Modeling of Thermal Resistances for Power Cables With Corrugated Sheaths 基于有限元的波纹护套电力电缆热阻分析建模

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-19 DOI: 10.1109/TPWRD.2024.3502238

W. Poradowski;G. J. Anders

{"title":"Analytical and FEM-Based Modeling of Thermal Resistances for Power Cables With Corrugated Sheaths","authors":"W. Poradowski;G. J. Anders","doi":"10.1109/TPWRD.2024.3502238","DOIUrl":"10.1109/TPWRD.2024.3502238","url":null,"abstract":"An analytical expression for the thermal resistance of the corrugated sheath layer of power cables is developed in this paper. (The corrugated sheath layer means a layer composed of both metallic sheath and air gaps.) The model is based on multiple finite element (FEM) studies. The proposed analytical model defines the resulting thermal resistance of the corrugated sheath layer composed of a metallic sheath and air gaps. All three heat transfer mechanisms are considered, namely, conduction, convection and radiation. The geometric parameters of the corrugated sheath presented in this study cover most constructions encountered in practice, thus it might be used for cable ampacity calculations. The presented analytical expression is illustrated with the current rating calculations that consider heat losses in the corrugated sheath. The 400 kV low pressure oil filled (LPOF) cable found in CIGRE TB 880 was studied. Based on the results of the FEM analysis, a conclusion was reached that the thermal network for this cable presented in CIGRE TB 880, based on the approach described in the IEC Standard 60287, overestimates its ampacity values as presented in the technical brochure.","PeriodicalId":13498,"journal":{"name":"IEEE Transactions on Power Delivery","volume":"40 1","pages":"398-409"},"PeriodicalIF":3.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673490","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}

引用次数: 0

Seismic Resilience Assessment of Electric Power Distribution Networks 配电网抗震性评估

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-19 DOI: 10.1109/TPWRD.2024.3502211

Farshad Amani-Jouneghani;Mahmud Fotuhi-Firuzabad;Moein Moeini-Aghtaie;Payman Dehghanian

{"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}

引用次数: 0

Parametric Evaluation for Comprehensive Fault Analysis in an Isolated HV-LV Winding Assembly Using Composite Frequency Response 利用复合频率响应进行隔离式高压-低压绕组组件综合故障分析的参数评估

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-18 DOI: 10.1109/TPWRD.2024.3495556

Sourav Mitra;Saurav Pramanik

{"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}

引用次数: 0

Transient Behavior of Power Cables Considering Partial Drying Out of the Soil 考虑到土壤部分干燥的电力电缆瞬态行为

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-18 DOI: 10.1109/TPWRD.2024.3500364

Heiner Brakelmann;George J. Anders;Maciej Mroz

引用次数: 0

Parallel Spatial-Temporal Graph Attention Network for Short Term Multi-Sequence Load Forecasting 用于短期多序列负荷预测的并行时空图注意网络

IF 4.4 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-15 DOI: 10.1109/tpwrd.2024.3496998

Long Zhuo, Xu ZhiYuan, Wu Gongping, Deng Feng, Chen Xiangyuan, Feng Wenshan, Huang Zhiwen

引用次数: 0

Investigation of Liquid Temperatures and Velocities at Winding Inlet in Natural Cooled Transformers Through Complete-Cooling-Loop Based CFD Simulations and Experiments 通过基于完整冷却回路的 CFD 模拟和实验研究自然冷却变压器绕组入口处的液体温度和速度

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-14 DOI: 10.1109/TPWRD.2024.3495229

S. C. Zhao;X. Zhang;Q. Liu;Z. D. Wang;M. Negro;M. Daghrah;E. Van Schaik

{"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}

引用次数: 0

Highly Sensitive Wideband Measurement Method of DC Micro-Discharges Based on Optimized Subdivided Electrode System 基于优化细分电极系统的直流微放电高灵敏度宽带测量方法

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-14 DOI: 10.1109/TPWRD.2024.3498436

Jie Wang;Geng Chen;Qiang Zhang;You-ping Tu

引用次数: 0

Secure Implementation of Active Power Filters Using a Dual Cascaded Second-Order Time-Delay Filter 使用双级联二阶时延滤波器安全实现有源电力滤波器

IF 3.8 2区工程技术

IEEE Transactions on Power Delivery Pub Date : 2024-11-14 DOI: 10.1109/TPWRD.2024.3498450

Abdullahi Bamigbade;Francisco de León

引用次数: 0