2014 IEEE PES T&D Conference and Exposition最新文献

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-07-24 DOI: 10.1109/TDC.2014.6863244

Bob McFetridge

{"title":"Smart voltage reduction","authors":"Bob McFetridge","doi":"10.1109/TDC.2014.6863244","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863244","url":null,"abstract":"Over the years, voltage reduction has been implemented using different techniques. In the early days, a summing transformer was added to the sense voltage input on the LTC/regulator control. There are many disadvantages to this system-among them being the need for follow-up commands to exit voltage reduction and hardware changes if voltage reduction needed to be implemented. This paper explains a smart voltage reduction algorithm that will allow for the maximum percentage of reduction without the need of reducing the bandwidth or requiring multiple levels to be entered. The simple steps of disabling band edges and applying reactive compensation in the correct direction can both increase the amount of reduction and also allow the system to return to normal quicker when exiting reduction. With the newer digital controls, voltage reduction can now be performed without the need for external transformers, and three levels of voltage reduction-typically between 1–10%-can be implemented via software. This allows the user the ability to remotely change the percentage of reduction without changing any hardware, a major benefit. A second major benefit is in response time. A third benefit is that there is verification that the control is in reduction mode. This paper provides an overview of this Smart Voltage Reduction system and these benefits.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128899102","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

Determining transmission line conductor condition and remaining life 确定输电线路导体状况和剩余寿命

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-07-24 DOI: 10.1109/TDC.2014.6863242

Y. Tsimberg, K. Lotho, C. Dimnik, N. Wrathall, A. Mogilevsky

引用次数: 15

A survey of Commercial & Industrial metering applications 商业和工业计量应用的调查

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-07-24 DOI: 10.1109/TDC.2014.6863540

Katherine Crouse, Scott Hemlinger

引用次数: 0

SVC refurbishment for smart grid power quality enhancement and life extension 用于智能电网电能质量提高和寿命延长的SVC翻新

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-04-14 DOI: 10.1109/TDC.2014.6863292

B. Mehraban, D. Reed, R. Gutman, B. Depommier, R. Hariharan, S. Mendis, S. Shah

引用次数: 5

Optimizing grid infrastructure with site-flexible, fuel-free compressed air energy storage 优化电网基础设施，现场灵活，无燃料压缩空气储能

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-04-14 DOI: 10.1109/TDC.2014.6863149

Richard D. Brody

引用次数: 0

Ground return current behaviour in HVAC insulated cables by means of MCA 用MCA分析暖通空调绝缘电缆的接地回电流特性

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-04-14 DOI: 10.1109/TDC.2014.6863197

R. Benato, S. Dambone Sessa, Fabio Guglielmi, E. Partal, Nasser D. Tleis

{"title":"Ground return current behaviour in HVAC insulated cables by means of MCA","authors":"R. Benato, S. Dambone Sessa, Fabio Guglielmi, E. Partal, Nasser D. Tleis","doi":"10.1109/TDC.2014.6863197","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863197","url":null,"abstract":"The knowledge of ground return current in faulty occurrence plays a key role in the dimensioning of the earthing grid of substations and cable sealing end compounds, in the computation of rise of earth potential at substation sites and in electromagnetic interferences (EMIs) on neighbouring parallel metallic conductors (pipes, handrail, etc.). Moreover, the ground return current evaluation is also important in steady-state regime since this stray current can be responsible for EMIs and also for AC corrosion. In faulty situation and under some assumptions, the ground return current value at substation site can be computed by means of k-factors. The paper shows that these simplified and approximated approaches have a lot of limitations and only multiconductor approaches can show the ground return current behaviour along the cable (not only the two end values) both in steady-state regime and in short circuit occurrence (e.g. phase-to-ground and phase-to-phase-to-ground). Multiconductor Cell Analysis (MCA) considers the cable system in its real asymmetry without simplified and approximated hypotheses. The sensitivity of ground return current to circuit parameters (cross-bonding box resistances, substation earthing resistances, soil resistivity) is throughout presented.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"36 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":"126646653","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

Uncertainty analysis of load model based on the sparse grid stochastic collocation method 基于稀疏网格随机配置法的负荷模型不确定性分析

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-04-14 DOI: 10.1109/TDC.2014.6863148

Dong Han, T. Lin, Yilu Liu, Jin Ma, Guoqiang Zhang

引用次数: 0

Low voltage ride through capability enhancement of grid connected PV system by SDBR 通过SDBR提高并网光伏系统容量实现低电压骑行

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-04-14 DOI: 10.1109/TDC.2014.6863248

Md. Kamal Hossain, M. Ali

{"title":"Low voltage ride through capability enhancement of grid connected PV system by SDBR","authors":"Md. Kamal Hossain, M. Ali","doi":"10.1109/TDC.2014.6863248","DOIUrl":"https://doi.org/10.1109/TDC.2014.6863248","url":null,"abstract":"Penetration of Photovoltaic (PV) power to the grid is increasing very rapidly. Energy regulatory body is imposing much stricter grid code due to this high penetration of the PV power. Grid connected PV system encounters different types of abnormalities during grid faults. When the fault appears in the grid side, the point of common coupling (PCC) voltage will go very low which will cause the DC link voltage very high for power balancing. This high DC link voltage may damage the inverter. Also, the voltage sag will force the PV system to be disconnected from the grid according to grid code. And shutdown of large PV plant may have adverse effect in power system operation. This study proposes series dynamic braking resistor (SDBR) to counteract the effect of faults in the grid side and hence prevents the voltage sag in grid side. Improving voltage sag by the proposed method will enhance the low voltage ride through (LVRT) capability of the PV plant. The effectiveness of the proposed method is verified by applying the most severe fault (three-phase-to-ground fault). The terminal voltage obtained with proposed protection scheme maintains the grid code, and hence the PV systems need not to be disconnected from the grid during fault.","PeriodicalId":161074,"journal":{"name":"2014 IEEE PES T&D Conference and Exposition","volume":"61 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":"114390414","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: 28

Hybrid overcurrent protection relay based on rotating magnetic field principle 基于旋转磁场原理的混合式过流保护继电器

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-04-14 DOI: 10.1109/TDC.2014.6863165

B. Korobeynikov, A. Ishchenko, D. Ishchenko

引用次数: 2

Design of an intelligent transformer management system 智能变压器管理系统的设计

2014 IEEE PES T&D Conference and Exposition Pub Date : 2014-04-14 DOI: 10.1109/TDC.2014.6863397

T. Ku, C. S. Chen, C. H. Lin, W. Shyu

引用次数: 7