2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)最新文献_第3页

Solar Power Ramp Event Forewarning with Limited Historical Observations 有限历史观测的太阳能斜坡事件预警

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733374

Wenli Zhu, Li Zhang, Mingliang Yang, Bo Wang

{"title":"Solar Power Ramp Event Forewarning with Limited Historical Observations","authors":"Wenli Zhu, Li Zhang, Mingliang Yang, Bo Wang","doi":"10.1109/ICPS.2019.8733374","DOIUrl":"https://doi.org/10.1109/ICPS.2019.8733374","url":null,"abstract":"Timely and accurate forewarning of solar power ramp events (SPREs) is crucial for power system operation. In this paper, a novel forewarning method for SPREs is proposed based on credal network (CN) and imprecise Dirichlet model (IDM). A new expression of SPRE is proposed, which focuses on the power change caused by meteorological fluctuation. Considering that the single-valued probability may not provide convincing results in case of insufficient ramp event records, probability interval is adopted to reflect the ambiguous correlation between SPREs and meteorological conditions. The meteorological evidences are mapped to ramp events directly by using a CN to enhance the sensitivity of SPRE identification. Maximum weight spanning tree and greedy search are applied to build the structure of the CN. Furthermore, an extended IDM is developed to estimate the interval-valued parameters in the CN. Then, a credal classifier is established to output the ramp forewarning grade. The effectiveness of the proposed method is verified through case studies, and obvious improvement on accuracy of ramp forewarning can be seen.","PeriodicalId":160476,"journal":{"name":"2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131951164","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

Field Verification of an Autonomous Anti-Islanding Scheme of a Microturbine Inverter-Based Generator 基于微涡轮逆变器的发电机自主防孤岛方案的现场验证

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733327

A. Nassif, R. Torquato, Humud Said, D. Lang

{"title":"Field Verification of an Autonomous Anti-Islanding Scheme of a Microturbine Inverter-Based Generator","authors":"A. Nassif, R. Torquato, Humud Said, D. Lang","doi":"10.1109/ICPS.2019.8733327","DOIUrl":"https://doi.org/10.1109/ICPS.2019.8733327","url":null,"abstract":"Recent regulations introduced in Alberta, Canada, have resulted in a direct impact on the oil and gas industry. In particular, venting, flaring and incinerating natural gas has become an intolerable practice with small quotas and high penalties. This, coupled with the mandate to decommission the coal-fired base generation has stimulated the proliferation of Distributed Energy Resources (DERs). Many oil companies are employing gas-fired DERs to offset their byproduct gas produced during oil extraction processes. But the integration of DERs to distribution grid requires addressing concerns and requirements. Among these requirements, health and safety hazards shall be eliminated or minimized. In this industry, islanded operation of a DER is considered a safety hazard and is not permitted by the electric utility, safe in exceptional cases. The standard method to avoid islanded operation is the Direct Transfer Trip (DTT). In very exceptional cases, however, the utility may accept an alternative method. This paper addresses one of these methods and presents measurement data collected during the commissioning of one of these DERs. The case study demonstrates the effectiveness of an inverter-based active anti-islanding scheme and its adherence to applicable DER interconnection standards. It also describes the current application scenarios where the electric utility may elect to accept these schemes in lieu of the standard DTT.","PeriodicalId":160476,"journal":{"name":"2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121459910","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

Estimating Frequency Changes Due to Smart Grid Functions 估计智能电网功能引起的频率变化

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733355

S. Saleh, J. Wo, X. F. St. Onge, E. Castillo-Guerra

引用次数: 6

A Pilot Protection Scheme for MMC-HVDC Transmission Lines Based on Filtered Differential Current 基于滤波差分电流的MMC-HVDC中导保护方案

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733332

Biqi Wang, Xiaodong Zheng, Lianying Ning, M. H. Nadeem

引用次数: 0

A Dynamic Weighted Aggregation Equivalent Modeling Approach for the DFIG Wind Farm Considering the Weibull Distribution 考虑威布尔分布的DFIG风电场动态加权聚集等效建模方法

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733350

Yuhao Zhou, Long Zhao, Igor B. M. Matsuo, Weijen Lee

{"title":"A Dynamic Weighted Aggregation Equivalent Modeling Approach for the DFIG Wind Farm Considering the Weibull Distribution","authors":"Yuhao Zhou, Long Zhao, Igor B. M. Matsuo, Weijen Lee","doi":"10.1109/ICPS.2019.8733350","DOIUrl":"https://doi.org/10.1109/ICPS.2019.8733350","url":null,"abstract":"The developing process of the aggregated dynamic equivalent model (DEM) for wind farms could be less computational and more efficient compared with the multimachine DEM, but less accurate when wind speed differences exist inside the wind farm. In addition, the wind speed differences contributes to the different activation patterns of the crowbar systems. Therefore, a dynamic weighted aggregation modeling approach is proposed in this paper to improve the applicability of the aggregated DEM. Firstly, the Gaussian density distance clustering algorithm is applied to segment the wind speed power curve into different zones such that each segmented zone is corresponded to one equivalent aggregated machine. Then the dynamic weighted aggregation equivalent model could be developed based on the conventional aggregated DEM, where the weighting factors for each generator are calculated according to the Weibull distribution of wind speeds. Different scenarios are simulated to analyze the applicability of the proposed dynamic weighting equivalent model. The simulation results show the effectiveness of the proposed method.","PeriodicalId":160476,"journal":{"name":"2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132905775","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

Programmable Logic Controller based Automatic Voltage and Frequency Control of MicroGrid 基于可编程控制器的微电网电压频率自动控制

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733370

A. Zia, Awais Saeed, Q. Malik

引用次数: 0

Automatic Load Shedding Protection at A Coal-Chemical Plant 某煤化工装置的自动减载保护

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733367

J. Dai

{"title":"Automatic Load Shedding Protection at A Coal-Chemical Plant","authors":"J. Dai","doi":"10.1109/ICPS.2019.8733367","DOIUrl":"https://doi.org/10.1109/ICPS.2019.8733367","url":null,"abstract":"This paper reports a dynamic modeling of a coal-chemical plant and studies for automatic load shedding protection. The plant had on-site generation to support partial plant loads. In the past, disconnecting from the grid had caused frequency and voltage decay in the plant electrical system to drop out some critical loads. A complete system computer model is constructed including generator dynamics and excitation and prime mover/governor control characteristics. Transient stability simulations to various loading and generation conditions were carried out to understand and study system frequency and voltage behaviors and patterns of change under a sudden islanding case by analyzing frequency vs. time and frequency change rate vs. time curves. Further, through carefully evaluating plant load priorities as well as load dependencies, several feasible load shedding control strategies were proposed and simulated by computer modeling and study. Simulation results verified that proposed load shedding schemes can correctly predicate the frequency drop thus automatically shed non-critical and independent loads to prevent system frequency drop to exceed the allowable deviation. The solution is automatic and feasible which has been successfully implemented at the plant.","PeriodicalId":160476,"journal":{"name":"2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132964952","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

Evaluation of a Unique Transient Hardened Transformer Designed to Withstand Primary Switching Transients: Simulation, Lab Tests and Analysis 一种独特的可承受一次开关瞬变的瞬态硬化变压器的评估:模拟、实验室测试和分析

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733377

Steven H. Buehler, T. Dionise, D. Shipp, F. A. Penner, Tamer Abdelazim Mellik, T. Natali

{"title":"Evaluation of a Unique Transient Hardened Transformer Designed to Withstand Primary Switching Transients: Simulation, Lab Tests and Analysis","authors":"Steven H. Buehler, T. Dionise, D. Shipp, F. A. Penner, Tamer Abdelazim Mellik, T. Natali","doi":"10.1109/ICPS.2019.8733377","DOIUrl":"https://doi.org/10.1109/ICPS.2019.8733377","url":null,"abstract":"Many modern electrical distribution systems, such as those used in data centers, demand high power densities, small electrical footprints, high efficiency transformers, redundant systems and frequent testing requiring switching at primary voltages. These various parameters that ensure the highest reliability and availability to mission-critical loads also place the facility in the highest risk category for distribution transformer failures due to primary switching transients. Over the last decade, this phenomenon has been attributed to a significant number of failures of certain types of transformers involving primary circuit breaker switching in data centers and other facilities exhibiting similar characteristics. Although the RC snubber has been proven to safely mitigate the transient overvoltage imposed on the primary winding of the transformer, manufacturers have continued to look for other solutions to the primary switching transients problem resulting in an alternative solution: a unique transient hardened transformer designed to withstand switching transients. The authors conducted an evaluation to prove analytically, through a combination of simulations and field tests, that the transient hardened transformer design will withstand switching transients without the need for transient mitigation using RC snubbers, relying only on conventionally applied surge arresters. This paper focuses specifically on data center transformers, however, the lessons learned here may be applied to numerous applications.","PeriodicalId":160476,"journal":{"name":"2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132157036","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

An Optimized Frequency Scanning Tool for Sub-Synchronous Interaction Analysis of Non-Linear Devices 非线性器件次同步相互作用分析的优化频率扫描工具

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733372

I. Matsuo, Farshid Salehi, Long Zhao, Yuhao Zhou, Weijen Lee

{"title":"An Optimized Frequency Scanning Tool for Sub-Synchronous Interaction Analysis of Non-Linear Devices","authors":"I. Matsuo, Farshid Salehi, Long Zhao, Yuhao Zhou, Weijen Lee","doi":"10.1109/ICPS.2019.8733372","DOIUrl":"https://doi.org/10.1109/ICPS.2019.8733372","url":null,"abstract":"Frequency scan is a powerful and versatile approach for Sub-Synchronous Interaction (SSI) screening in power grids. Among different numerical and analytical frequency scan techniques, the harmonic injection method is well suited for the scan of black-box models with active elements, such as in wind farms and solar plants. The results can be used for SSI risk assessment, in which accuracy performs a decisive role. The ideal situation for this method, which leads to the most accurate results, is to perform one simulation per single-frequency harmonic injection. However, for SSI studies with a wide range of frequencies and simulations with very small time steps (scale of μs), this comes at the expense of increased simulation time and financial costs. This paper proposes a technique to improve the accuracy of the harmonic injection method through the optimization of crest factor while injecting all frequencies at one shot, therefore increasing the efficiency of the method by a considerable decrease in simulation time while maintaining good accuracy. The proposed technique was tested on a 100 MVA wind farm connected to the grid through a series-compensated line. The frequency scan results were benchmarked with both Electromagnetic Transient Simulation (EMT) and the ideal multiple single-frequency injection case and compared with other techniques. The results are indicative of the accuracy and robustness of the proposed method.","PeriodicalId":160476,"journal":{"name":"2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123036320","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

Integrated Control of Renewable Energy and Fault Restoration for Distribution Systems 配电系统可再生能源综合控制与故障恢复

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS) Pub Date : 2019-05-01 DOI: 10.1109/ICPS.2019.8733325

T. Ku, C. H. Lin, C. S. Chen, C. Hsu, C.S. Li, Y. Chang

引用次数: 3