{"title":"Transient stability analysis with phase plane of high-order derivatives of angle dynamics","authors":"Changgang Li, Yilu Liu, Matthew Gardner","doi":"10.1109/TDC.2014.6863350","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863350","url":null,"abstract":"Transient stability is of essential concern in power systems. This paper provides a graphical method with high-order derivatives of voltage phase angle dynamics for transient stability analysis. Using a Single Machine Infinite Bus system, criteria are defined for determining unstable equilibrium points using the first, second, and third order derivatives of phase angle difference. To intuitively show stability characteristics, a new phase plane is defined with the first and second order derivatives. With measurement data from phasor measurement units, bus voltage phase angle and frequency dynamics are used for field application. Applications of the proposed method for transient stability evaluation and prediction are discussed. Simulations show that the proposed method provides an intuitive approach for transient stability analysis and is useful in field applications.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125606045","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}
{"title":"Integrating PowerWorld and MatLab for agent-based modeling and simulation of competitive electric power markets","authors":"Dong Zhang, Shuhui Li","doi":"10.1109/TDC.2014.6863507","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863507","url":null,"abstract":"The transition to agent-based competitive wholesale and retail markets for electric utilities around the world has been a difficult and controversial process. One of the difficulties that hindered the growth of a competitive power market is the absence of efficient computational tools to assist the design, analysis and operation of the power market. Although many commercial software packages have been developed for a broad study of an electric power system, these power system simulators are usually not designed in such a way that can be used for analysis and evaluation of an agent-based competitive power market. This paper investigates mathematical models associated with a competitive power market and how these models can be converted in such a way that makes it possible to use commercial power system software for agent-based modeling and simulation of a competitive power market. The paper also develops a mechanism to integrate PowerWorld and MatLab for combined optimal power dispatch and agent-based learning interactions. Finally, the paper demonstrates a case study for a competitive electric power system using the integrated software system.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126726640","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}
{"title":"IEC61850-9-2 Process Bus implementation on IEDs","authors":"R. Cimadevilla, Í. Ferrero, José Miguel Yarza","doi":"10.1109/TDC.2014.6863506","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863506","url":null,"abstract":"The Process Bus is based on two types of multicast messages, the GOOSE (defined in IEC61850-8-1) and the Sampled Values (SV, defined in IEC61850-9-2). This paper focuses on the SV messages and their influence on the IEDs. Devices working with SV, coming from the Merging Units (MU) or from the non-conventional CTs (NCCT), have to cope with issues not considered with conventional IEDs: resampling, frequency tracking, counter-measures to be taken during loss or delay of SV, etc. The paper explains the issues found during the development of an IED based on SV, describing the adopted solutions. Interpolation algorithms are used for resampling and for lost SV estimation. The frequency tracking algorithm is reviewed. Tests results for different conditions are included.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121411190","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}
{"title":"Joint transmission expansion planning and energy storage placement in smart grid towards efficient integration of renewable energy","authors":"M. Hedayati, Junshan Zhang, K. Hedman","doi":"10.1109/TDC.2014.6863213","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863213","url":null,"abstract":"This paper investigates the integration of renewable energy resources in power systems, using bulk energy storage technologies as well as transmission system capacity expansion. A joint transmission expansion planning and energy storage placement is proposed to satisfy the requirements of a power system model with wind farm generation. The problem is formulated as a multistage mixed integer programming problem, aiming to minimize the total investment and operational costs incurred for integrating wind generation. The operating cost captures the benefits subject to the planning decisions. Based on the DC power flow model, the optimal planning is presented, which strikes a balance between the system expansion cost and the operational cost. By leveraging the properties of the proposed optimization problem, the formulated problem is transformed into a linear mixed integer program. Numerical studies, using the modified Roy Billinton Test System (RBTS) and IEEE Reliability Test System (RTS), explore the proposed optimization method and compare the central and distributed energy storage schemes. The results demonstrate the significant benefits of the proposed approach.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"717 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122993825","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}
{"title":"An overview of trends in distribution network planning: A movement towards smart planning","authors":"S. You, H. Bindner, Junjie Hu, P. Douglass","doi":"10.1109/TDC.2014.6863446","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863446","url":null,"abstract":"Distribution network planning, historically known as a ‘predict and provide’ process, seeks to determine a set of optimal network solutions for supplying electric demands spatially distributed over a geographic area. Today, the rapid development and deployment of distributed generation and smart grid products (e.g., control, communication, and new economic measures) call for urgent improvements in distribution network planning to allow the utilities to proactively modernize their existing distribution grids. This paper reviews the current practices in this area and the emerging trends towards smart planning. Some challenges with smart planning are identified and briefly discussed.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115813645","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}
{"title":"A protection scheme using ultra-fast circuit breakers for wildfire mitigation and reliability improvement for rural distribution","authors":"B. Watson","doi":"10.1109/TDC.2014.6863296","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863296","url":null,"abstract":"The advent of ultra-fast (half-cycle), compact, remote controllable and cost effective circuit breakers suitable for deployment on rural lateral lines provides opportunities for new approaches to protecting these lines. This paper will present a novel scheme that provides significant benefit to operators of rural overhead MV distribution networks in terms of reliability improvement and minimizing the risk of electrical faults causing ignition of wild fires. Firstly, the key criteria for reliability optimization and mitigation of electrical faults causing ignition of fires are presented. An assessment of the performance of a number of typical lateral line protection schemes is conducted. All traditional approaches have a number of deficiencies, primarily related to preventing wild fires. New ultra-fast circuit breaker technology is introduced that enables a new approach to the optimal protection of rural lateral lines. A novel protection scheme is presented and is shown to represent the optimal solution for both reliability performance and prevention of electrical faults causing wild fire ignition on extreme weather days. For fault levels typical on rural lateral lines, when switched off in less than a half cycle, there is inadequate energy in the arc to cause fire ignition. This alternate protection mode can be remotely commanded over SCADA to allow rapid network response to extreme weather. An example is presented to clarify the expected performance.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121176261","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}
{"title":"Variable speed heat pump design for frequency regulation through direct load control","authors":"Young-Jin Kim, J. Kirtley, L. Norford","doi":"10.1109/TDC.2014.6863424","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863424","url":null,"abstract":"Frequency regulation becomes a non-trivial issue due to an increase in renewable resources and power electronics-based loads. Direct load control (DLC), a strategy of autonomous demand response, has been applied to mitigate operational burdens on generation units for frequency regulation. Variable speed heat pumps (VSHPs) have been regarded as promising devices that can respond to the DLC signal updated every 2 or 4 seconds. This paper presents a dynamic model of the VSHP that is simplified for real-time simulation studies but still sufficiently comprehensive to analyze its physical and operational characteristics. Furthermore, a variable speed drive (VSD)-controlled induction motor model is designed together with an indirect torque controller for the adjustment of the VSHP input power. In addition, based on experimental setup and data, a test room was modeled to estimate the effect of the DLC-enabled VSHP on indoor temperature. Simulation case studies performed in Matlab/Simulink verify that the VSHP can be well utilized as DLC-enabled loads for frequency regulation while ensuring residents' comfort and long-term device performance.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123835968","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}
{"title":"Validation of generic models for stability analysis of two large static var systems in New York using PMU data","authors":"P. Pourbeik, G. Stefopoulos","doi":"10.1109/TDC.2014.6863222","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863222","url":null,"abstract":"This paper presents an approach for the validation of generic standard models for an SVC and a STATCOM using voltage and current data measured by phasor measurement units (PMUs) at the respective substations where these devices are installed. The data used were recorded in real-time during system disturbances at different locations of the system. By using the measured voltage, as an input to the model, the response of the model is computed and compared with the measured response of the shunt dynamic device. An optimization algorithm is used to optimally estimate the gains of the modeled controls in order to achieve good agreement between the simulated and measured response of the device. The models used in this process are generic models for static var systems developed in previous work by the WECC SVC Task Force.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122734218","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}
{"title":"600 Amp Loadbreak Dead-front Separable Insulated Connectors for 15, 25, and 35 kV class distribution systems","authors":"D. C. Hughes","doi":"10.1109/TDC.2014.6863330","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863330","url":null,"abstract":"This paper expands upon the 2012 IEEE conference publication titled “15 kV 600A Loadbreak Dead-front Separable Insulated Connector System” [1] by the same author. The updated work expands the scope of the original to include 25 and 35 kV class 600 A loadbreak connector systems, some ancillary products, additional technologies researched, and additional test results. Some of the salient background information from the original paper is repeated herein to aid the reader. The resulting work conveys the solution to obtaining easier and safer visible breaks for line crews using 600 A loadbreak dead-front separable connectors while operating 15, 25, or 35 kV underground distribution systems.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131169539","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}
{"title":"Generation increase on distribution feeders using electronic voltage regulators","authors":"Jonathan Nye, J. Beukes, M. Bello","doi":"10.1109/TDC.2014.6863440","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863440","url":null,"abstract":"This paper discusses the impact of using two types of electronic voltage regulators (EVRs) that can replace mechanical voltage regulators on the medium voltage network. It is shown how the EVRs can reduce the rapid voltage change level of distributed generation (DG) on weak networks and increase the amount of generation that can be connected to the network. EVRs improve power quality by limiting the voltage variations caused by highly variable generation such as the power produced by photo-voltaic (PV) plants. Simulations are performed on a test network to compare the penetration levels of different DG connection cases. It is shown that the EVRs have the potential to increase DG penetration levels substantially while improving power quality at the same time.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131097847","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}