Situation awareness in the power transmission and distribution industry

2007 ◽  
Author(s):  
Erik S. Connors ◽  
Mica R. Endsley ◽  
Lawrence Jones
Keyword(s):  
Situation Awareness ◽  
Power Transmission ◽  
Transmission And Distribution

Situation Awareness in the Power Transmission and Distribution Industry

2007 ◽  
Vol 51 (4) ◽  
pp. 215-219 ◽  
Author(s):  
Erik S. Connors ◽  
Mica R. Endsley ◽  
Lawrence Jones
Keyword(s):  
Reliability Analysis ◽  
Situation Awareness ◽  
Task Analysis ◽  
Power Transmission ◽  
Lessons Learned ◽  
Clear Understanding ◽  
Active Research ◽  
Transmission And Distribution

This paper describes active research on situation awareness (SA) as it applies to the power transmission and distribution (T&D) industry. Goal-Directed Task Analysis (GDTA) interviews were conducted with Specialist Reliability Analysis & Operation and Reliability Coordinator/System Operators from two large U.S. power companies to achieve a clear understanding of the power T&D domain. The resulting GDTA and lessons learned are presented.

A Novel FACTS Based (DDSC) Compensator for Power-Quality Enhancement of L.V. Distribution Feeder with a Dispersed Wind Generator

2006 ◽  
Vol 7 (3) ◽  
Author(s):  
Adel M Sharaf ◽  
Khaled Mohamed Abo-Al-Ez
Keyword(s):  
Power Quality ◽  
Distributed Generation ◽  
Distribution System ◽  
Power Transmission ◽  
Traditional Approach ◽  
Distribution Networks ◽  
System Capacity ◽  
Quality Enhancement ◽  
Wind Generator ◽  
Transmission And Distribution

In a deregulated electric service environment, an effective electric transmission and distribution networks are vital to the competitive environment of reliable electric service. Power quality (PQ) is an item of steadily increasing concern in power transmission and distribution. The traditional approach to overcoming capacity and quality limitations in power transmission and distribution in many cases is the addition of new transmission and/or generating capacity. This, however, may not be practicable or desirable in the real case, for many of reasons. From technical, economical and environmental points of view, there are two important - and most of the time combined - alternatives for building new transmission or distribution networks to enhance the transmission system capacity, and power quality: the Flexible alternating current transmission devices and controllers, and the distributed generation resources near the load centers. The connection of distributed generation to the distribution grid may influence the stability of the power system, i.e. angle, frequency and voltage stability. It might also have an impact on the protection selectivity, and the frequency and voltage control in the system. This paper presents a low cost FACTS based Dynamic Distribution System Compensator (DDSC) scheme for voltage stabilization and power transfer and quality enhancement of the distribution feeders connected to a dispersed wind generator, using MATLAB/ SimPower System simulation tool.

scholarly journals Calculation of thermal field and ampacity of overhead power transmission lines using finite element method

2014 ◽  
Vol 17 (1) ◽  
pp. 16-29
Author(s):  
Long Van Hoang Vo ◽  
Tu Phan Vu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Transmission Lines ◽  
Power Transmission ◽  
Power Lines ◽  
Power Transmission Lines ◽  
Thermal Fields ◽  
Overhead Power Transmission Lines ◽  
Transmission And Distribution ◽  
Element Method

The population explosion and development of the national economy are two main causes of increasing the power demand. Besides, the Distributed Generations (DG) connected with the power transmission and distribution networks increase the transmission power on the existing lines as well. In general, for solving this problem, power utilities have to install some new power transmission and distribution lines. However, in some cases, the install of new power lines can strongly effect to the environment and even the economic efficiency is low. Nowadays, the problem considered by scientists, researchers and engineers is how to use efficiently the existing power transmission and distribution lines through calculating and monitoring their current carrying capacity at higher operation temperature, and thus the optimal use of these existing lines will bring higher efficiency to power companies. Generally, the current carrying capacity of power lines is computed based on the calculation of their thermal fields illustrated in IEEE [1], IEC [2] and CIGRE [3]. In this paper, we present the new approach that is the application of the finite element method based on Comsol Multiphysics software for modeling thermal fields of overhead power transmission lines. In particular, we investigate the influence of environmental conditions, such as wind velocity, wind direction, temperature and radiation coefficient on the typical line of ACSR. The comparisons between our numerical solutions and those obtained from IEEE have been shown the high accuracy and applicability of finite element method to compute thermal fields of overhead power transmission lines.

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