Investigation of the effects of differing investment programs and macroeconomic parameters on long-term power transmission planning. I. Models

2005 ◽  
Author(s):  
N.H. Sohtaoglu
Keyword(s):  
Power Transmission ◽  
Transmission Planning

Long-Term Power Transmission Failures in Southeastern Brazil and the Geophysical Environment

2012 ◽  
Vol 33 (5) ◽  
pp. 973-989 ◽  
Author(s):  
Magda A. S. Duro ◽  
Pierre Kaufmann ◽  
Fernando C. P. Bertoni ◽  
Emilio C. N. Rodrigues ◽  
José Pissolato Filho
Keyword(s):  
Power Transmission ◽  
Southeastern Brazil ◽  
Transmission Failures

The Temporal-Spatial Evolution of the Southern Corridor of West-to-East Power Transmission Project in China

2014 ◽  
Vol 521 ◽  
pp. 485-489
Author(s):  
Hong Hao Fu ◽  
Guo Tian Cai ◽  
Dai Qing Zhao
Keyword(s):  
Power Supply ◽  
Power Plants ◽  
Power Transmission ◽  
Market Mechanism ◽  
Power Grids ◽  
Total Power ◽  
Spatial Process ◽  
Market Situation ◽  
Increasing Demand

This paper analyzes temporal and spatial process, and problems based on data between 1986 and 2010. Conclusions are as follows. Power supply of Guangdong relied more on distant outer-province power grids over time, not inner-province ones, close ones or independent power plants. This accelerating enlargement of power supply range could well satisfy its increasing power consumption. However, power production of western provinces couldnt simultaneously meet their own increasing demand and demand by Guangdong. Furthermore, total power transmission and electricity tariff were fixed by long-term framework agreements signed among governments, in which the transmission amount was too much while the tariff was too low, forcing the western provinces limiting their domestic demand without proper compensation. So the current enlarging trend of power supply range of Guangdong is unsustainable and its necessary to introduce power market mechanism through adjusting short-term total power transmission and power tariff according to the market situation.

A Monte Carlo Model for Pitting Corrosion in Phosphor Bronze Tape Used in Underground Power Transmission Cables

CORROSION ◽  
10.5006/3347 ◽  
2020 ◽  
Vol 76 (1) ◽  
pp. 82-92
Author(s):  
Lixin Zhang ◽  
Simon Gill ◽  
Sivashangari Gnanasambandam ◽  
Maurizio Foresta ◽  
Jingzhe Pan ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Pitting Corrosion ◽  
Depth Distribution ◽  
Power Transmission ◽  
Monte Carlo Model ◽  
Probability Of Failure ◽  
Distribution Model ◽  
Pit Depth ◽  
Random Nature

Life of underground oil-filled power transmission cables used with phosphor bronze tapes is greatly reduced by pitting corrosion and hence accurate prediction of the pit growth in these tapes becomes essential. In the present work, the probability distribution of corrosion pit depth on phosphor bronze tapes is calculated using probabilistic Monte Carlo simulations and compared with the measured pit depth distribution on samples of broken tapes which have been in service for about 50 y. This Monte Carlo simulation is performed on every stable pit that nucleates, propagates, and repassivates on the metal surface. Due to the random nature of pitting corrosion, the probability of failure of this class of cables can be simulated based on the Monte Carlo model. This paper shows that the simulated pit depth distribution is very similar to the experimental data. The results demonstrate that the Monte Carlo model by Engelhardt and Macdonald can be effectively applied to long-term field data of phosphor bronze tapes, even over 50 y. In addition, the probability of failure due to pitting corrosion can be evaluated analytically, without need of conducting expensive and time-consuming experimental campaigns. Therefore, this probabilistic pit depth distribution model will be a powerful tool in the decision-making strategy for the replacement of underground power transmission cables near their end of life.

Analysis on Influence of Complex Power Transmission Environment on Main Equipment Safety of JiuAn Substation

2013 ◽  
Vol 385-386 ◽  
pp. 1036-1039
Author(s):  
Tian Jiao Pu ◽  
Ai Zhong Tian ◽  
Zheng Fan ◽  
Ye Li ◽  
Dan Li
Keyword(s):  
Power Transmission ◽  
Heavy Load ◽  
Main Equipment ◽  
Equipment Safety ◽  
Transformer Substation ◽  
Complex Power ◽  
Depth Study ◽  
Electromagnetic Characteristics ◽  
The Impact

In the complex power transmission environment, the electromagnetic characteristics of the 500kV JiuAn transformer substation node will change, which will make an important impact on the main equipment of substation. This paper makes in-depth study on the impact of complex power transmission environment on the main equipment, such as high voltage, long-term heavy load, changes of run mode and forced outage. On this basis, PSCAD Software is used to simulate this model, and the simulation result is analyzed. It is significant to ensure the security of main equipment of JiuAn substation.

Applicability Analysis of PTN Technology in Henan Electric Power Transmission Network

2014 ◽  
Vol 644-650 ◽  
pp. 3667-3670
Author(s):  
Yi Yang ◽  
Jing Xian Lv ◽  
Shi Wen Wang ◽  
Pei Lin Cai ◽  
Wen Cui Li
Keyword(s):  
Communication Network ◽  
Electric Power ◽  
Power Transmission ◽  
Transmission Network ◽  
Data Service ◽  
Standard Process ◽  
Comprehensive Benefit ◽  
Business Requirements

Power communication network is an important part of an intelligent grid. This paper focuses on problems in Henan electric power transmission network, analyzes business requirements, technical routes and implementation of programmed areas, and summarizes the technical advantages of PTN technology in the standard process. Application of PTN technology in Henan electric power transmission network can solve the problem of surging data service. Fully taking into account the current and long term investment benefits, its comprehensive benefit is greater than a comprehensive upgrade of SDH equipment.

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