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Power Sharing and Transient Simulation and Analysis for Ring Bus Architecture with Static UPS 静态UPS环形母线结构的功率共享与暂态仿真分析
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654260
Yuzhi Zhang, L. Qi, Taosha Jiang, H. Suryanarayana, S. Colombi, H. Handlin
{"title":"Power Sharing and Transient Simulation and Analysis for Ring Bus Architecture with Static UPS","authors":"Yuzhi Zhang, L. Qi, Taosha Jiang, H. Suryanarayana, S. Colombi, H. Handlin","doi":"10.1109/NAPS52732.2021.9654260","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654260","url":null,"abstract":"This paper discusses the transient simulation and analysis for ring bus (RB) architecture comprised of multiple Uninterruptible Power Supplies (UPSs) to maximize its reliability for data center application. The ring bus system is an architecture which has critical loads distribute evenly among all UPSs. The system is more tolerant to the potential interruption events. The selected transient scenarios include UPS failure and faults on ring bus and input of dual carded load are discussed in this paper. A droop control scheme is used. Its equivalent system model for voltage and power dispatch control during faults is described. The simulation results reported in this paper verify the functionality of the ring bus architecture and its fault tolerant capability.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132635666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laplace Domain Modeling of Power Components for Transient Converter-Grid Interaction Studies 暂态变流器-电网相互作用研究中功率分量的拉普拉斯域建模
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654553
H. Alameri, P. Gómez
{"title":"Laplace Domain Modeling of Power Components for Transient Converter-Grid Interaction Studies","authors":"H. Alameri, P. Gómez","doi":"10.1109/NAPS52732.2021.9654553","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654553","url":null,"abstract":"This paper introduces a Laplace-based modeling approach for the study of transient converter-grid interactions. The proposed approach is based on the development of two-port admittance models of converters and other components, combined with the use of numerical Laplace transforms. The application of a frequency domain method is aimed at the accurate and straightforward computation of transient system responses while preserving the wideband frequency characteristics of power components, such as those due to the use of high frequency semiconductive switches, electromagnetic interaction between inductive and capacitive components, as well as wave propagation and frequency dependence in transmission systems.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116688439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Graph Crossings in Electric Transmission Grids 输电网中的交叉图
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654543
A. Birchfield, T. Overbye
{"title":"Graph Crossings in Electric Transmission Grids","authors":"A. Birchfield, T. Overbye","doi":"10.1109/NAPS52732.2021.9654543","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654543","url":null,"abstract":"The number of times that transmission lines in a power system intersect one another without connecting electrically, that is, the number of graph crossings, gives insight into the level of non-planarity for a power grid network. This paper describes the importance of these crossings metrics and discusses challenges associated with calculating them. Example results are given for the geographic spatial embedding of actual United States power grid networks, based on public data from the U. S. Energy Information Administration. These results show that within voltage classes and removing main sources of data errors, there are up to 15% as many edge crossings as the number of lines, with fewer crossings both in the very highest voltage levels and in those closer to sub-transmission. A comparison is also made between using actual right-of-way routing and straight-line routing, with the latter circumventing more data errors and producing smaller and more consistent crossing counts.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116955691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Look - Ahead Corrective Restoration for Microgrids with Flexible Boundary 柔性边界微电网的前瞻性纠偏修复
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654742
S. Konar, A. Srivastava
{"title":"Look - Ahead Corrective Restoration for Microgrids with Flexible Boundary","authors":"S. Konar, A. Srivastava","doi":"10.1109/NAPS52732.2021.9654742","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654742","url":null,"abstract":"Flexible boundary microgrid (MG) technology aids in the self-healing capability of the distribution network (DN). This paper develops a centralized model predictive control (MPC) strategy to form flexible boundary MGs with the goal of retaining continuity of power supply, during the outage of a feeder. The proposed control system optimizes grid restoration through DN partitioning, enforcing radial topology, control of distributed generators (DGs) and energy storage systems (ESSs). The core of the MPC algorithm is non-convex in nature due to the presence of line switches, dynamics of ESS, operational constraints of the DN. An equivalent mixed integer linear programming (MILP) problem is solved to make the solution more manageable. Finally, case study is verified in IEEE-33 bus system and the results show the feasibility and effectiveness of the proposed approach.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132565341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Distributed Secondary Frequency and Voltage Regulation in Islanded Microgrids With Noise Using Intermittent Control 带噪声孤岛微电网中分布式二次频率和电压的间歇调节
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654704
Zhenhua Wang, William Danilczyk, Hepeng Li, Haibo He, Y. Sun
{"title":"Distributed Secondary Frequency and Voltage Regulation in Islanded Microgrids With Noise Using Intermittent Control","authors":"Zhenhua Wang, William Danilczyk, Hepeng Li, Haibo He, Y. Sun","doi":"10.1109/NAPS52732.2021.9654704","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654704","url":null,"abstract":"This paper addresses the frequency and voltage regulation problem in islanded microgrids with random noise. Based on intermittent control strategy, a distributed secondary control structure is designed. The proposed control scheme is effective to achieve frequency and voltage restoration in mean square. In addition, the precise active power sharing among distributed generators is maintained. The stability of the proposed control method is analyzed by utilizing Lyapunov theory. A sufficient condition, which shows the relationship between control feedback gains, noise intensity, and communication network, is established. Finally, case studies are given to show the effectiveness of the proposed control method.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"20 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132747254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Reactive Power Compensation in a Microgrid Coupled to Electrical Vehicles 微电网与电动车耦合的无功补偿
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654482
Khalil Sinjari, Saad Alzahrani, Riley Lawson, J. Mitra
{"title":"Reactive Power Compensation in a Microgrid Coupled to Electrical Vehicles","authors":"Khalil Sinjari, Saad Alzahrani, Riley Lawson, J. Mitra","doi":"10.1109/NAPS52732.2021.9654482","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654482","url":null,"abstract":"This paper presents how Electric Vehicle (EV) bidirectional chargers support microgrid stability. This is realized by microgrid integration of electrical vehicles (EVs) connected to an aggregator (AGGR), which involves a Multi-Agent control system (MAS) by executing a three-stage algorithm controlling the reactive power for an agent and the power balance of the microgrid. A bidirectional control circuit with load balancing energy devices connected to a bidirectional converter is used in the topology. This control circuit enables power factor correction (PFC), wherein the three phase PFC control algorithm is based on virtual control. The control algorithm used in specifying how much reactive power is inserted is presented in this paper. A Real Time Digital Simulator (RTDS) has been used to model the power system of the microgrid. Simulation results show compensation of reactive power and the saturation point of the current keeps the power within preset boundaries.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128397680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Practical Start-Up Process of Multiple Grid-Tied Voltage-Sourced Inverters in Laboratory 实验室多台并网电压逆变器的实际启动过程
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654265
Zhengyu Wang, Zhixin Miao, Lingling Fan
{"title":"Practical Start-Up Process of Multiple Grid-Tied Voltage-Sourced Inverters in Laboratory","authors":"Zhengyu Wang, Zhixin Miao, Lingling Fan","doi":"10.1109/NAPS52732.2021.9654265","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654265","url":null,"abstract":"Starting up inverter-based resources (IBRs) and integrating them into a grid are important in real-world engineering and there are many challenges to be tackled. Using a laboratory-scale hardware test bed (50 Watt and 20 V), this paper demonstrates the challenges and provides a practical start-up process that can smoothly energize two grid-tied voltage-sourced inverters (VSI) and synchronize the VSIs into a 60-Hz grid. The hardware test bed consists of two SiC VSIs and a 45-kW Chroma grid simulator to act as the grid. The inverter controls are implemented in OPAL-RT OP5600, which has the measurements sensed, control algorithms processed, and gate signals generated and sent to the VSI switches. This research focuses on examining how to energize VSIs and how to synchronize the VSIs into the grid. The best energizing approach is summarized based on comparison and analysis of the experiment results. The presented approach can prevent large transients during the start-up process.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124184709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Numerical Method for Fault Location in DC Systems Using Traveling Waves 直流系统行波故障定位的数值方法
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654771
S. Paruthiyil, Rudy Montoya, A. Bidram, M. Reno
{"title":"A Numerical Method for Fault Location in DC Systems Using Traveling Waves","authors":"S. Paruthiyil, Rudy Montoya, A. Bidram, M. Reno","doi":"10.1109/NAPS52732.2021.9654771","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654771","url":null,"abstract":"Due to the existence of DC-DC converters, fast-tripping fault location in DC power systems is of particular importance to ensure the reliable operation of DC systems. Traveling wave (TW) protection is one of the promising approaches to accommodate fast detection and location of faults in DC systems. This paper proposes a numerical approach for a DC system fault location using the concept of TWs. The proposed approach is based on multiresolution analysis to calculate the TW signal's wavelet coefficients for different frequency ranges, and then, the Parseval theorem is used to calculate the energy of wavelet coefficients. A curve-fitting approach is used to find the best curve that fits the Parseval energy as a function of fault location for a set of curve-fitting datapoints. The identified Parseval energy curves are then utilized to estimate the fault location when a new fault is applied on a DC cable. A DC test system simulated in PSCAD/EMTDC is used to verify the performance of the proposed fault location algorithm.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121361572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Dynamic Modeling and Simulation of Integrated Energy Systems with Nuclear, Renewable, and District HeatinG 核能、可再生能源和区域供热综合能源系统的动态建模与仿真
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654554
R. Jacob, Jubeyer Rahman, J. Zhang
{"title":"Dynamic Modeling and Simulation of Integrated Energy Systems with Nuclear, Renewable, and District HeatinG","authors":"R. Jacob, Jubeyer Rahman, J. Zhang","doi":"10.1109/NAPS52732.2021.9654554","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654554","url":null,"abstract":"There is a paradigm shift in the energy industry towards green technologies which have incentivized nuclear and renewable-based energy production. The thermal power from the nuclear process could be optimally utilized to generate various end products thereby increasing the efficiency of nuclear power plants. A power plant being used for both electricity and heat is called an integrated energy system. One such integrated energy system coupling nuclear and wind energy resources by supplying electricity to the power grid and heat energy to a district heating network, is modeled and simulated in this paper. The dynamic model of the integrated energy system is developed using the Modelica language. Coordinated control is designed to ensure that the actual generation follows the demand associated with different end products. The performance of the dynamic model is evaluated for steady state responses and load following capabilities.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117268570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Generation Dispatch and Power Grid Emission Impacts of Transportation Electrification 交通电气化对发电调度和电网排放的影响
2021 North American Power Symposium (NAPS) Pub Date : 2021-11-14 DOI: 10.1109/NAPS52732.2021.9654527
K. Shetye, Hanyue Li, Jessica L. Wert, Xiaodan Xu, A. Meitiv, Yanzhi Xu, T. Overbye
{"title":"Generation Dispatch and Power Grid Emission Impacts of Transportation Electrification","authors":"K. Shetye, Hanyue Li, Jessica L. Wert, Xiaodan Xu, A. Meitiv, Yanzhi Xu, T. Overbye","doi":"10.1109/NAPS52732.2021.9654527","DOIUrl":"https://doi.org/10.1109/NAPS52732.2021.9654527","url":null,"abstract":"Generators in the bulk power grid are having to meet the growing demand for electric vehicles (EV) charging. This can affect emissions arising from these generators, which should be accounted for in analyzing the benefits of EVs over internal combustion engine vehicles. This paper describes the impacts of EVs on generator emissions, considering different scenarios of EV penetration, charging strategies, and wind curtailment. It discusses the sensitivity of generation dispatch and emissions to the system generation mix, and the EV charging strategy. Using a synthetic grid model based on the footprint of the state of Texas shows that even a 5% EV penetration in one part of the system can change the dispatch far across the network, highlighting the importance of using large, regional models in EV grid integration assessments. The paper also shows how different methods of modeling wind generation such as wind curtailment affect the emissions, especially in the presence of EVs.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127138280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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