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Improved Disjunctive Models for the Transmission Expansion Planning 输电扩展规划的改进析取模型
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9281594
Laura M. Escobar, A. Escobar Z., R. Romero L.
{"title":"Improved Disjunctive Models for the Transmission Expansion Planning","authors":"Laura M. Escobar, A. Escobar Z., R. Romero L.","doi":"10.1109/PESGM41954.2020.9281594","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9281594","url":null,"abstract":"This paper presents two improved disjunctive models for the transmission expansion planning problem, with the inclusion of additional critic cycles has been developed by the authors in recent works, in order to improve some of the traditional long-term transmission network expansion planning problem models. The reason behind it is the absence of Kirchhoff second law which completes the representation of the transmission system, but increase the complexity, making some big-sized problems impossible to solve depending of their topology. This improvement will allow the model to be solve the majority of the test systems with less computational effort and in less time. For specific cases the improved models help find better solution, which can be used as an starting point to find the optimal solution. The new models are implemented in AMPL, using the solver CPLEX. This paper uses the Colombian test system to illustrate the effectiveness of the proposed framework.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123956443","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
Line-Wise Power Flow and Voltage Collapse 线路潮流和电压崩溃
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9282030
B. Venkatesh, A. Mohamed
{"title":"Line-Wise Power Flow and Voltage Collapse","authors":"B. Venkatesh, A. Mohamed","doi":"10.1109/PESGM41954.2020.9282030","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9282030","url":null,"abstract":"Voltage collapse is a phenomenon where voltage collapses at one or more busses due to lack of reactive power characterized by a decrease in voltage with increase in reactive power injection and voltage drop in connected lines due to large power flows. Bus-wise power balance equations, solved using the Newton– Raphson (NR) technique, are widely used to analyze power systems for VC. While bus-wise power balance equations succinctly model a power system, it and its Jacobian do not readily point out the most critical set of lines without additional analysis. In this paper, first, a line-wise set of equations for modeling a power system and its solution method using the NR technique for power flow analysis are proposed. Study results on 6-, 14-, 57-, and 118-bus IEEE systems, a 582-bus real system, 2383-bus Polish power system, and 9241-bus PEGASE system show that the proposed method is accurate, provides monotonic convergence, scales well of large systems, and is consistently faster up to twice the speed of the bus-wise NR method, while using sparse matrices. Second, a line-wise VC index is derived and shown to be directly present in the Jacobian of the line-wise NR method, identifying the susceptible set of lines without additional computation. Usefulness of VC index as an online VC assessment tool is demonstrated for a critical loading condition on test systems.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124003685","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
Fast Identification of Saturated Cut-sets using Graph Search Techniques 利用图搜索技术快速识别饱和切集
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9281500
R. Biswas, A. Pal, Trevor Werho, V. Vittal
{"title":"Fast Identification of Saturated Cut-sets using Graph Search Techniques","authors":"R. Biswas, A. Pal, Trevor Werho, V. Vittal","doi":"10.1109/PESGM41954.2020.9281500","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9281500","url":null,"abstract":"When multiple outages occur in rapid succession, it is important to know quickly if the power transfer capability of different interconnections (or cut-sets) of the power network are limited. The algorithm developed in this paper identifies such limited cut-sets very fast, thereby enhancing the real-time situational awareness of power system operators. The significance of the proposed approach is described using the IEEE 39-bus test system, while its computational benefits are demonstrated using relatively large test-cases containing thousands of buses. The results indicate that the proposed network analysis can estimate the impact of an outage on any cut-set of the system and screen out the cut-set that gets saturated by the largest margin, very quickly.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125791170","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 Unified Droop-Free Distributed Secondary Control for Grid-Following and Grid-Forming Inverters in AC Microgrids 交流微电网随网与成网逆变器统一无下垂分布式二次控制
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9282042
S. Mohiuddin, Junjian Qi
{"title":"A Unified Droop-Free Distributed Secondary Control for Grid-Following and Grid-Forming Inverters in AC Microgrids","authors":"S. Mohiuddin, Junjian Qi","doi":"10.1109/PESGM41954.2020.9282042","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9282042","url":null,"abstract":"The inverter-based distributed generators (DGs) in microgrids usually operate in either grid-following (GFL) or grid-forming (GFM) control mode. In GFL mode the DG follows the voltage and frequency of the microgrid while in GFM mode it dictates voltage and frequency for the microgrid. In this paper, we propose a unified droop-free distributed secondary control for both GFL and GFM inverters based on distributed optimization. The proposed control regulates the frequency to nominal frequency, regulates the global average voltage in the microgrid to the rated voltage, and ensures accurate active and reactive power sharing among all GFL and GFM inverters. The DGs can communicate through a sparse communication network and share information about average voltage estimates and nominal active/reactive power. The effectiveness of the proposed control is validated through simulations on an eight-DG test microgrid with four GFL inverters and four GFM inverters.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126020298","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: 6
Viability of Synchronous Reference Frame Phase Locked Loop Inverter Control in an All Inverter Grid 全逆变电网中同步参考帧锁相环逆变器控制的可行性
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9282091
D. Ramasubramanian, E. Farantatos
{"title":"Viability of Synchronous Reference Frame Phase Locked Loop Inverter Control in an All Inverter Grid","authors":"D. Ramasubramanian, E. Farantatos","doi":"10.1109/PESGM41954.2020.9282091","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9282091","url":null,"abstract":"State of the art bulk power system connected inverter based resources make use of a variant of a synchronous reference frame (SRF) phase locked loop (PLL) in order to track the phase angle of the grid and subsequently inject current into the grid. Successful and speedy tracking of this angle is considered to be a requirement for stable operation of the inverter in grid connected mode. However, it has been postulated in literature that in 100% inverter grids, conventional SRF-PLL based inverter controls will be unable to operate in a stable manner as they follow a grid voltage. In this paper, it will be shown that there could be certain loading levels and system topologies for which an SRF-PLL based 100% inverter system can be operated in a stable manner and thus, a blanket statement that it would not be able to operate could be misleading to a transmission planner. Simulation results shown in this paper were conducted in electromagnetic transient domain.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"436 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126120103","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: 4
Exploration of Smart Grid Device Cybersecurity Vulnerability Using Shodan 基于Shodan的智能电网设备网络安全漏洞研究
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9281544
Darryl Ackley, Hengzhao Yang
{"title":"Exploration of Smart Grid Device Cybersecurity Vulnerability Using Shodan","authors":"Darryl Ackley, Hengzhao Yang","doi":"10.1109/PESGM41954.2020.9281544","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9281544","url":null,"abstract":"The generation, transmission, distribution, and storage of electric power is becoming increasingly decentralized. Advances in Distributed Energy Resources (DERs) are rapidly changing the nature of the power grid. Moreover, the accommodation of these new technologies by the legacy grid requires that an increasing number of devices be Internet connected so as to allow for sensor and actuator information to be collected, transmitted, and processed. With the wide adoption of the Internet of Things (IoT), the cybersecurity vulnerabilities of smart grid devices that can potentially affect the stability, reliability, and resilience of the power grid need to be carefully examined and addressed. This is especially true in situations in which smart grid devices are deployed with default configurations or without reasonable protections against malicious activities. While much work has been done to characterize the vulnerabilities associated with Supervisory Control and Data Acquisition (SCADA) and Industrial Control System (ICS) devices, this paper demonstrates that similar vulnerabilities associated with the newer class of IoT smart grid devices are becoming a concern. Specifically, this paper first performs an evaluation of such devices using the Shodan platform and text processing techniques to analyze a potential vulnerability involving the lack of password protection. This work further explores several Shodan search terms that can be used to identify additional smart grid components that can be evaluated in terms of cybersecurity vulnerabilities. Finally, this paper presents recommendations for the more secure deployment of such smart grid devices.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126157153","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
Impact of different CO2-pricing schemes on the profitability of Energy Hubs 不同的二氧化碳定价方案对能源中心盈利能力的影响
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9281587
Jonte Dancker, M. Wolter
{"title":"Impact of different CO2-pricing schemes on the profitability of Energy Hubs","authors":"Jonte Dancker, M. Wolter","doi":"10.1109/PESGM41954.2020.9281587","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9281587","url":null,"abstract":"To reach the Paris Agreement objectives more and more countries implement CO2-pricing schemes. These schemes are seen as a political solution to force a reduction of CO2-emissions in today’s energy consumption. On the other hand, integrated energy systems (IES) are part of the technological solution. Thus, different optimization algorithms have been developed and enhanced to optimally design and operate such systems. However, these algorithms do not include CO2-pricing schemes in their objective function neglecting current political trends. Therefore, this paper compares different CO2-pricing schemes and their impact on the profitability of integrated energy systems. It is shown that a CO2-price on gas provides an incentive to set up an IES. However, even today’s highest CO2-price is not sufficient to raise the profitability of an IES over a non-integrated energy system. If a uniform CO2-price on electricity and gas is set the threshold is even higher.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126177641","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
Evaluating the Influence of Momentary Cessation Mode in Inverter-Based Distributed Generators on Power System Transient Stability 基于逆变器的分布式发电机瞬间停止模式对电力系统暂态稳定性的影响评估
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9281463
Heewon Shin, J. Jung, Seungchan Oh, K. Hur, K. Iba, Byongjun Lee
{"title":"Evaluating the Influence of Momentary Cessation Mode in Inverter-Based Distributed Generators on Power System Transient Stability","authors":"Heewon Shin, J. Jung, Seungchan Oh, K. Hur, K. Iba, Byongjun Lee","doi":"10.1109/PESGM41954.2020.9281463","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9281463","url":null,"abstract":"The responses of an inverter-based distributed generator (IBDG) to abnormal voltage and frequency are different from those of a conventional generator because of the inverter’s operating modes. In particular, although the momentary cessation (MC) mode is essential as a control strategy in the distribution system, the MC mode can affect the power system transient stability by temporarily ceasing significant amounts of IBDG generation. To mitigate these negative effects, this study analyzed the impacts of MC capability on the power system transient stability. First, the transient stability was analyzed in relation to MC capability using the single-machine equivalent (SIME) method. A critical MC operating point (CMCOP) was then proposed to assess the severity of a transient impact and to secure the transient stability under the contingency conditions. A case study based on the Korean power system validated the feasibility and effectiveness of the proposed method.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125051365","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
NERC TPL-001-4 Compliance Study: Application of A New Composite Load Model in Dynamic Voltage Assessment NERC TPL-001-4依从性研究:一种新的复合负载模型在动态电压评估中的应用
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9281597
Xiaokang Xu, Mohamed E. Elkhatib, Ming Wu
{"title":"NERC TPL-001-4 Compliance Study: Application of A New Composite Load Model in Dynamic Voltage Assessment","authors":"Xiaokang Xu, Mohamed E. Elkhatib, Ming Wu","doi":"10.1109/PESGM41954.2020.9281597","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9281597","url":null,"abstract":"This paper presents a transient and dynamic voltage performance compliance study to demonstrate the compliance of the ITC transmission systems in Michigan with NERC TPL-0014 Standard. The study was focused on the Michigan Lower Peninsula area transmission systems. A new composite load model (CMLD) was parameterized, tuned and applied in the study as load modeling plays an important part in system voltage recovery following a disturbance. The study included testing CMLD for ITC’s 2019 and 2022 system summer peak load conditions with normal generation dispatch and stressed generation dispatch. Dynamic simulations were performed for a selected set of critical stability contingencies representing TPL001-4 P3, P4, P5, P6 and P7 contingency events. Corrective action plans such as adding a SVC were tested to mitigate voltage issues under such contingency events. Additionally, an extensive investigation of transient and dynamic voltage performance criterion currently implemented in various transmission entities such as ISOs/RTOs was conducted. Based on this investigation and dynamic simulation results, revisions to the current ITC transient/dynamic voltage recovery and dip criteria were recommended. This paper serves as a useful reference for other transmission systems in compliance with TPL-001-4 and for application of the new model CMLD.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129462324","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
Dynamics and Protection in Cascading Outages 级联中断中的动态和保护
2020 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2020-08-02 DOI: 10.1109/PESGM41954.2020.9281823
A. Flueck, I. Dobson, Zhenyu Huang, N. Eva Wu, Rui Yao, G. Zweigle
{"title":"Dynamics and Protection in Cascading Outages","authors":"A. Flueck, I. Dobson, Zhenyu Huang, N. Eva Wu, Rui Yao, G. Zweigle","doi":"10.1109/PESGM41954.2020.9281823","DOIUrl":"https://doi.org/10.1109/PESGM41954.2020.9281823","url":null,"abstract":"Understanding the interaction of relays with dynamics of a cascade is critical to the design of resilient power systems. Requirements include models of signal processing devices running complex protection algorithms and models of nonlinear power system dynamics, plus various uncertainties. This paper provides a brief overview of power system dynamics and protection, highlights recent cascading failures, covers existing modeling techniques, reviews typical simulation frameworks, and identifies open questions and gaps for future research and development for dynamics and protection in cascading outages.","PeriodicalId":106476,"journal":{"name":"2020 IEEE Power & Energy Society General Meeting (PESGM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129495638","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: 7
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