Using Transmission Line Outage Data to Estimate Cascading Failure Propagation in an Electric Power System

2008 ◽  
Vol 55 (9) ◽  
pp. 927-931 ◽  
Author(s):  
Hui Ren ◽  
I. Dobson
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Electric Power ◽  
Electric Power System ◽  
Cascading Failure ◽  
Failure Propagation

scholarly journals Reposisi dan Penggantian Menara Transmisi 150 kV

2020 ◽  
Vol 21 (2) ◽  
pp. 87
Author(s):  
Juara Mangapul Tambunan ◽  
Hary Mulyono
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Electric Power ◽  
Electric Power System ◽  
Transmission Channel ◽  
Working Capacity ◽  
Lattice Type ◽  
Maximum Value ◽  
Safe Limit ◽  
Standard Set

Transmission line is a very absolute thing in an electric power system. In the distribution of electricity from generating centers to loads (consummers), where the distance is quite far it is done through the transmission line. Transmission channels those are generally used based on construction are the lattice type and steel pole. The transmission channel has a safe limit against other objects around it according to the standard set. The air transmission line uses a TACSR (Thermal Aluminium Conductor Steel Reinforce) conductor which has a working capacity with temperatures up to 1500C. Based on calculations when the distance is 212m with a  temperature of  1500C the value of the roof is 9,40m. When the distance is 173m with a  temperature of  1500C the maximum value of the roof is 7.8m. When The condition of the temperature and the length of the span affect the value of the roof the greater of the temperature and the length of the span, so the greater of the resistance.ABSTRAK:Saluran transmisi adalah suatu hal yang sangat mutlak dalam suatu sistem tenaga listrik. Dalam penyaluran tenaga listrik dari pusat-pusat pembangkit ke beban (konsumen), dimana jaraknya cukup jauh maka dilakukan lewat saluran transmisi. Saluran transmisi yang umum digunakan berdasarkan konstruksinya adalah tipe lattice dan steel pole. Saluran transmisi ini memiliki batas aman terhadap obyek lain yang ada di sekitarnya sesuai standar yang ditetapkan. Saluran transmisi udara menggunakan konduktor jenis TACSR (Thermal Aluminium Conductor Steel Reinforced) yang memiliki kemampuan kerja dengan suhu sampai 1500C. Berdasarkan perhitungan pada saat jarak span 212 m dan dengan suhu 1500C andongan maksimumnya bernilai 9,40 m. Pada saat jarak 173 m dan dengan suhu 1500C andongan maksimalnya 7,8m. Pada saat jarak 233 m dengan suhu 1500C andongan maksimumnya adalah 10,58m. Keadaan suhu dan panjang span mempengaruhi nilai andongan, semakin besar suhu dan panjang span maka nilai andongan akan semakin besar.

ESTIMATING FAILURE PROPAGATION IN MODELS OF CASCADING BLACKOUTS

2005 ◽  
Vol 19 (4) ◽  
pp. 475-488 ◽  
Author(s):  
Ian Dobson ◽  
Benjamin A. Carreras ◽  
Vickie E. Lynch ◽  
Bertrand Nkei ◽  
David E. Newman
Keyword(s):  
Probability Distribution ◽  
Power System ◽  
Transmission Line ◽  
Probabilistic Model ◽  
Initial Step ◽  
Cascading Failure ◽  
Statistical Estimates ◽  
Failure Propagation ◽  
Cascading Blackouts ◽  
System Data

We compare and test statistical estimates of failure propagation in data from versions of a probabilistic model of loading-dependent cascading failure and a power system blackout model of cascading transmission line overloads. The comparisons suggest mechanisms affecting failure propagation and are an initial step toward monitoring failure propagation from practical system data. Approximations to the probabilistic model describe the forms of probability distribution of cascade sizes.

scholarly journals A Modular Neural Network Scheme Applied to Fault Diagnosis in Electric Power Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Agustín Flores ◽  
Eduardo Quiles ◽  
Emilio García ◽  
Francisco Morant ◽  
Antonio Correcher
Keyword(s):  
Fault Diagnosis ◽  
Power Systems ◽  
Power System ◽  
Transmission Line ◽  
Electric Power ◽  
Diagnostic System ◽  
Specific Area ◽  
Electric Power Systems ◽  
Electric Power System ◽  
Power Network

This work proposes a new method for fault diagnosis in electric power systems based on neural modules. With this method the diagnosis is performed by assigning a neural module for each type of component comprising the electric power system, whether it is a transmission line, bus or transformer. The neural modules for buses and transformers comprise two diagnostic levels which take into consideration the logic states of switches and relays, both internal and back-up, with the exception of the neural module for transmission lines which also has a third diagnostic level which takes into account the oscillograms of fault voltages and currents as well as the frequency spectrums of these oscillograms, in order to verify if the transmission line had in fact been subjected to a fault. One important advantage of the diagnostic system proposed is that its implementation does not require the use of a network configurator for the system; it does not depend on the size of the power network nor does it require retraining of the neural modules if the power network increases in size, making its application possible to only one component, a specific area, or the whole context of the power system.

A Review on Fault Detection Using Different Techniques in Electric Power System

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Ajay Yadav ◽  
Shalini Goad
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Electric Power ◽  
Power Supply ◽  
Power Transmission ◽  
Electrical Power ◽  
Electric Power System ◽  
Electricity Supply ◽  
Transmission And Distribution ◽  
Very High

The Electrical power transmission and distribution power traces performs important roles in Power System strategies it has to reap the crucial continuity of carrier of power supply to the cease users. The power transmission traces join the producing stations and cargo centers. The possibility of fault occurrences in transmission traces could be very high. Since faults can destabilize the electricity device it should be remote without delay for recovery of electricity supply. It is fault evaluation could be very critical difficulty in power approach engineering just so to clean faults fast and repair electricity deliver as quickly as feasible with minimal interruption. In this paper gives a literature evaluate of electricity transmission line faults detection.

Security Constrained Economic Dispatch

2010 ◽  
Vol 1 (2) ◽  
pp. 1-16 ◽  
Author(s):  
Lizhi Wang ◽  
Nan Kong
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Electric Power ◽  
High Reliability ◽  
Low Cost ◽  
Electric Power System ◽  
Load Shedding ◽  
Mixed Integer ◽  
Mixed Integer Linear Program ◽  
Discounted Cost

The main objective of electric power dispatch is to provide electricity to the customers at low cost and high reliability. Transmission line failures constitute a great threat to the electric power system security. We use a Markov decision process (MDP) approach to model the sequential dispatch decision making process where demand level and transmission line availability change from hour to hour. The action space is defined by the electricity network constraints. Risk of the power system is the loss of transmission lines, which could cause involuntary load shedding or cascading failures. The objective of the model is to minimize the expected long-term discounted cost (including generation, load shedding, and cascading failure costs). Policy iteration can be used to solve this model. At the policy improvement step, a stochastic mixed integer linear program is solved to obtain the optimal action. We use a PJM network example to demonstrate the effectiveness of our approach.

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