Influence of Circuit Breaker Features on Switching Overvoltage of 35kV Shunt Reactor on No-load Busbar - II. Onsite Testing and Comparison

2019 ◽  
Author(s):  
Yiming Zheng ◽  
Chen Li ◽  
Mianzhi Wu ◽  
Zemin Wei ◽  
Chunyan Gong ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Shunt Reactor ◽  
Switching Overvoltage

scholarly journals Investigation and Mitigation of Temporary Overvoltage Caused by De-Energization on an Offshore Wind Farm

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4439
Author(s):  
Ajibola Akinrinde ◽  
Andrew Swanson ◽  
Innocent Davidson
Keyword(s):  
Wind Farm ◽  
Phase Plane ◽  
Circuit Breaker ◽  
Offshore Wind ◽  
Offshore Wind Farm ◽  
Circuit Breakers ◽  
Shunt Reactor ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Transformer Core

The Ferranti effect could cause a rise in voltage along the cables on a wind farm if the circuit breakers at the receiving ends are switched off. Ferroresonance could also occur due to stuck pole(s) of the circuit breaker during de-energization. This paper reports on the temporary overvoltage (TOV) arising from the de-energization of the circuit breaker connecting the wind turbine to the feeder, the feeder breaker connecting an array of wind turbines to the point of common coupling (PCC), and the opening of the circuit breaker connecting the onshore to the offshore substation. Ferroresonance was characterized using a phase plane diagram and Poincaré map and was identified to be chaotic. The effect of the nonlinear characteristic of the wind transformer core on the ferroresonant overvoltage was examined and increased with the steepness of slope of the transformer curve. A damping resistor, shunt reactor and surge arrester were used to mitigate the overvoltage experienced during the ferroresonant event. The damping resistor was able to reduce the overvoltage to 1.24 P.U. and damped the ferroresonance from chaotic to fundamental mode.

Prevention of reignition overvoltages by phase-angle-controlled switching of a gas circuit breaker at shunt reactor current interruption

1993 ◽  
Vol 113 (5) ◽  
pp. 14-23
Author(s):  
Yoshifumi Yamagata ◽  
Tsutomu Kumagai ◽  
Susumu Nishiwaki ◽  
Hiroaki Toda ◽  
Masayuki Ishikawa ◽  
...  
Keyword(s):  
Phase Angle ◽  
Circuit Breaker ◽  
Current Interruption ◽  
Shunt Reactor ◽  
Controlled Switching

scholarly journals Optimisation of electric arc model parameters based on simplex annealing and genetic algorithms

2019 ◽  
Vol 252 ◽  
pp. 05001
Author(s):  
Tomasz Chmielewski ◽  
Tomasz Kuczek ◽  
Piotr Oramus
Keyword(s):  
Circuit Breaker ◽  
Electric Arc ◽  
Model Parameters ◽  
Switching Overvoltage ◽  
Arc Model ◽  
Electric Arc Model ◽  
Chopping Current ◽  
Multiple Measurements ◽  
Annealing Algorithms ◽  
Genetic Optimisation

This paper presents the method for obtaining the coefficients of the dynamic Cassie-Mayr electric arc model by means of annealing and genetic optimisation algorithms. The extraction of the coefficients can be obtained by means of the iterative fitting process based on e.g. multiple measurements results. However, this requires a significant effort and can generate significant costs. The approach presented in this paper relies solely on simulations. The methodology used herein consists in finding the match to the maximum produced TRV generated during high-voltage shunt reactor current breaking, for ideal switch and conductance based Cassie-Mayr circuit breaker models. This is done for a given chopping current value assigned to the ideal switch which is used as a target. The arc model coefficients are obtained by means of the optimisation process for various values of the desired chopping current level to be reflected by the Cassie-Mayr conductance-based electric arc model. As a result, an advanced conductance based model can be used for assessment of switching overvoltage. Genetic and simplex annealing algorithms have been selected for optimisation. The models as well as the optimisation process were conducted in EMTP-ATP software using its built-in functionalities. The article presents the error assessment and sample traces.

Design and testing of a three-break 800 kV SF/sub 6/ circuit breaker with ZnO varistors for shunt reactor switching

1992 ◽  
Vol 7 (2) ◽  
pp. 853-861 ◽  
Author(s):  
A.K. McCabe ◽  
G. Seyrling ◽  
J.D. Mandeville ◽  
J.M. Willieme
Keyword(s):  
Circuit Breaker ◽  
Shunt Reactor ◽  
Zno Varistors ◽  
Design And Testing
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