Can an influence graph driven by outage data determine transmission line upgrades that mitigate cascading blackouts?

2018 ◽  
Author(s):  
Kai Zhou ◽  
Ian Dobson ◽  
Paul D.H. Hines ◽  
Zhaoyu Wang
Keyword(s):  
Transmission Line ◽  
Cascading Blackouts ◽  
Influence Graph

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.

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

Choke-Supported Tri-plate Transmission Line Filter for Loss Reduce Technique

2013 ◽  
Vol 133 (5) ◽  
pp. 957-961
Author(s):  
Yasuyoshi Okita ◽  
Futoshi Kuroki ◽  
Yuki Kawahara
Keyword(s):  
Transmission Line
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