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The multi-objective optimization dispatch of energy-saving coordination of Combined Cold Heat and Power 冷热电联产节能协调的多目标优化调度
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281577
Xiaohong Ran, R. Zhou
{"title":"The multi-objective optimization dispatch of energy-saving coordination of Combined Cold Heat and Power","authors":"Xiaohong Ran, R. Zhou","doi":"10.1109/TDC.2012.6281577","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281577","url":null,"abstract":"Combined Cold Heat and Power (CCHP) is a breakthrough to achieve energy saving and emission reduction. By introducing the heat equivalent, the cold, heat and power are transformed equivalently, and then new objective function is proposed about generation cost and environmental cost of CCHP. In order to reduce unnecessary energy wasting and the random of supplying cold heat and power in different operation condition, so the coordination cost of cold heat and power is set up according to the theory of changing price with time. So a multi-objective optimization model of energy-saving dispatch is formulated based on generation cost, environmental cost and coordination cost of CCHP, and then we solve the problem with the fuzzy optimization programming. The results show that the model is vital in economic dispatch, especially after considering coordination cost, not only can effective manage the need of power and realize peak load shaving. The more important is to be able to change energy production and operation way due to the mismatching of cold heat and power load. It also provides the reference for the promotion of energy -saving dispatch of CCHP.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"7 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89396533","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
Reliability value of fast state estimation on power systems 电力系统快速状态估计的可靠性值
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281657
M. Elizondo, Yousu Chen, Zhenyu Huang
{"title":"Reliability value of fast state estimation on power systems","authors":"M. Elizondo, Yousu Chen, Zhenyu Huang","doi":"10.1109/TDC.2012.6281657","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281657","url":null,"abstract":"Monitoring the state of a power system under stress is key to achieving reliable operation. State estimation and timely measurements become more important when applying and designing corrective control actions (manual and automatic) to arrest or mitigate cascading blackouts. The execution time of each process, including state estimation, should be as short as possible to allow for timely action. In this paper, we provide a methodology for estimating one of the components of value of faster and more frequent state estimation: the reliability value of state estimation to assist corrective control actions for arresting or mitigating cascading blackouts. We use an algorithm for estimating the time between successive line trips in a cascading failure. The algorithm combines power flow calculations with characteristics of the protection system to estimate the time between successive equipment trips. Using this algorithm, we illustrate the value of fast state estimation by calculating the time remaining for automatic or manual corrective actions after state estimation is finalized.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"25 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87148336","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
Implementation techniques of the IED and network monitoring system in IEC61850 SA IEC61850 SA中IED和网络监控系统的实现技术
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281703
P. Jintagosonwit
{"title":"Implementation techniques of the IED and network monitoring system in IEC61850 SA","authors":"P. Jintagosonwit","doi":"10.1109/TDC.2012.6281703","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281703","url":null,"abstract":"Substation automation using IEC61850 (IEC61850 SA) now is widely implemented by many power utilities around the world. Currently, communication architecture of IEC61850 SA is based on Ethernet and TCP/IP technology. Thus, the SA network consists of computers, Ethernet switches and many various IEDs such as protection relays and bay controls units (BCUs). The performance of most SA functions relies on rapid information transferring among IEDs such as tripping commands or blocking commands. Consequently, if any critical function cannot perform on certain time, then an undesired result may occur such as a bigger outage than it should be. Thus, the IED and network monitoring system (INMS) is proposed to monitor the communication health of IEDs including network devices and report alarms and information to maintenance crews for maintaining suspected devices before any critical function will perform. This paper presents in-house implementation techniques that to improve the existing SA by integrating a satisfactory IED and network monitoring function in order to enhance condition-based maintenance of IEC61850 devices.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"2 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90143083","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 computational system for dynamic capacity analysis of distribution circuits - Finite volume method (FVM) 配电线路动态容量分析的计算系统。有限体积法
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281579
G. K. Filho, F. Filho, R. Berti, A. A. Komessu, M. Masuda, M. Jardini, J. Jardini
{"title":"A computational system for dynamic capacity analysis of distribution circuits - Finite volume method (FVM)","authors":"G. K. Filho, F. Filho, R. Berti, A. A. Komessu, M. Masuda, M. Jardini, J. Jardini","doi":"10.1109/TDC.2012.6281579","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281579","url":null,"abstract":"Currently the capacity of the circuit is calculated taking into account assumptions that turn out to underutilize the actual capacity of distribution networks with underground cables out, that due to the unavailability of information “on line” of each individual circuit and temperature at the time, length, arrangement in conduits, etc.. The loading of a cable or conductor is commonly called ampacity. Due to economic constraints and limitations because of lack of space, many dealers in the world are striving to increase the carrying capacity of cables in service and the new designed.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"30 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83792563","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
Protection of transformer-ended feeders using multifunction relays 使用多功能继电器的变压器端馈线保护
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281454
R. Grabovickic, C. Labuschagne, N. Fischer, O. Glynn
{"title":"Protection of transformer-ended feeders using multifunction relays","authors":"R. Grabovickic, C. Labuschagne, N. Fischer, O. Glynn","doi":"10.1109/TDC.2012.6281454","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281454","url":null,"abstract":"Modern digital multifunction relays provide protection, control, monitoring, metering, and communications functions at a fraction of the cost of old electromechanical relays. Because of their versatility, reliability, and lower cost, digital relays are becoming increasingly attractive to distribution power utilities in applications to solve specific protection and control problems. One such application is the protection of transformer-ended feeders (TEFs), which are very popular in some utilities. In this paper, we describe an application of digital multifunction relays for the protection of a feeder that ends with a distribution transformer. In this application, we attempt to provide as many protection functions as possible with the fewest relays. The application we describe is similar to that used at ENERGEX (a distribution power utility in Brisbane, Australia), in which two directional overcurrent relays protect both a feeder and a transformer. The relay located at the low-voltage (LV) side also provides restricted earth fault (REF) transformer protection and breaker failure protection as well as backup overcurrent, ground, and sensitive earth fault protection for a distribution network. In the application we describe, the LV relay also combines with existing feeder relays to provide LV busbar protection. We also present the results of simulations performed on a Real Time Digital Simulator (RTDS®), particularly regarding the selection of appropriate settings during transformer inrush conditions.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"35 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83799761","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
Impact of non-dispatchable renewables on generator cycling and control via a hierarchical control scheme 不可调度可再生能源对发电机循环和控制的影响
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281670
Renke Huang, E. Farantatos, G. Cokkinides, A. Meliopoulos
{"title":"Impact of non-dispatchable renewables on generator cycling and control via a hierarchical control scheme","authors":"Renke Huang, E. Farantatos, G. Cokkinides, A. Meliopoulos","doi":"10.1109/TDC.2012.6281670","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281670","url":null,"abstract":"Increasing penetration of intermittent non-dispatchable renewable resources to the power grid could result in a less reliable and secure system if the intermittency is ignored. An additional effect of intermittency is the cycling of thermal units as the thermal units are controlled under an economic dispatch controller. This paper proposes an approach to smoothen the intermittency and therefore minimize thermal unit cycling by controlling demand and other customer owned resources. Specifically, a hierarchical optimization and coordination algorithm is proposed that takes advantage of the control capabilities of these resources and optimizes their operation with the ultimate goal to minimize system operating cost and maximized reliability. A byproduct of this optimization is the reduced cycling of dispatchable generating units. Results are demonstrated on a utility scale system with various levels of wind penetration using actual wind generation patterns. It is shown that while the objective of the optimization is the minimization of the overall operating cost of the system, the optimal solution also reduces the number of cycles and the average MW variation per cycle. This minimization of thermal unit wear and tear increases the reliability of the system.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"93 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84158599","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
Use of modern technologies and software to deliver efficient design and optimization of 1380 km long bipole III ±500 kV HVDC transmission line, Manitoba, Canada 利用现代技术和软件，为加拿大马尼托巴省1380公里长的双极III±500千伏高压直流输电线路提供高效的设计和优化
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281455
E. Ghannoum, Z. Kieloch
{"title":"Use of modern technologies and software to deliver efficient design and optimization of 1380 km long bipole III ±500 kV HVDC transmission line, Manitoba, Canada","authors":"E. Ghannoum, Z. Kieloch","doi":"10.1109/TDC.2012.6281455","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281455","url":null,"abstract":"The new ±500 kV HVDC Bipole III line is one of the longest transmission lines to be built in North America. It will connect the generation source on the Nelson River in Northern Manitoba with the load centre located near Winnipeg in the South. Modern technologies have been used for designing and optimization this line such as: the use of LiDAR survey which provided accurate time/cost efficient non invasive survey of the line corridor, use of Reliability Based Design (RBD) method that provides more cost efficiency and higher reliability than common deterministic methods, use of modern software that allows a extremely efficient import of LiDAR survey data and creation of line profiles for tower spotting. The same software was also used to select the family of towers to be designed and for tower spotting that results in the minimum line cost.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"40 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86379635","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
Minimal cut sets, Petri nets, and prime number encoding in distribution system reliability evaluation 配电系统可靠性评估中的最小割集、Petri网与素数编码
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281495
M. Al-Muhaini, G. Heydt
{"title":"Minimal cut sets, Petri nets, and prime number encoding in distribution system reliability evaluation","authors":"M. Al-Muhaini, G. Heydt","doi":"10.1109/TDC.2012.6281495","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281495","url":null,"abstract":"Reliability assessment of secondary distribution networks is an important subject due to the increasing demand for more reliable service with less interruption frequency and duration. The connection of a distribution network may be neither series nor parallel, and analyzing such a network is a complicated process and time consuming task. In this paper, a technical approach for evaluating the reliability of a mesh networked distribution system is described. The proposed method is based on the identification of circuit minimal tie sets using the concept of Petri nets. Then, prime numbers encoding and unique prime factorization are applied to classify the remaining combinations as tie sets, cut sets, or minimal cut sets. The minimal cut sets are used to calculate the Availability (A), Average Interruption Frequency (AIF), and Average Interruption Duration (AID) of the network. Examples are shown to illustrate the proposed method. The method shown is algorithmic and appears suitable for off-line comparison of alternative secondary distribution system designs on the basis of their reliability.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"48 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82361256","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: 13
Distributed control strategies for high-penetration commercial-building-scale thermal storage 高渗透商业建筑规模蓄热的分布式控制策略
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281608
A. Mammoli, C. B. Jones, H. Barsun, D. Dreisigmeyer, G. Goddard, O. Lavrova
{"title":"Distributed control strategies for high-penetration commercial-building-scale thermal storage","authors":"A. Mammoli, C. B. Jones, H. Barsun, D. Dreisigmeyer, G. Goddard, O. Lavrova","doi":"10.1109/TDC.2012.6281608","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281608","url":null,"abstract":"For the commercial building sector, the fraction of peak electric load due to cooling sometimes approaches 50%. Meeting this load can create severe problems for electric utilities. Building-scale thermal storage can turn this problem into a resource, allowing both a reduction of the peak demand on the electricity infrastructure, and the ability to absorb intermittent power production from renewable energy resources such as wind and solar PV. In this study, the effects of two types of distributed control of thermal storage resources are considered with respect to their effectiveness in load leveling and renewables uptake. It is found that both real-time pricing and stochastic control strategies can reduce peak loads substantially, and can react to the availability of renewable energy at the transmission level.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"46 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83732596","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: 12
Volt-VAR optimization on American Electric Power feeders in Northeast Columbus 哥伦布东北部美国电力馈线的电压无功优化
PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281586
K. Schneider, T. Weaver
{"title":"Volt-VAR optimization on American Electric Power feeders in Northeast Columbus","authors":"K. Schneider, T. Weaver","doi":"10.1109/TDC.2012.6281586","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281586","url":null,"abstract":"In 2007 American Electric Power launched the gridSMART® initiative with the goals of increasing efficiency of the electricity delivery system and improving service to the end-use customers. As part of the initiative, a coordinated Volt-VAR system was deployed on eleven distribution feeders at five substations in the Northeast Columbus Ohio Area. The goal of the coordinated Volt-VAR system was to decrease the amount of energy necessary to provide end-use customers with the same quality of service. The evaluation of the Volt-VAR system performance was conducted in two stages. The first stage was composed of simulation, analysis, and estimation, while the second stage was composed of analyzing collected field data. This panel paper will examine the analysis conducted in both stages and present the estimated improvements in system efficiency.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"27 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78793110","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: 31
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