Investigation on overvoltage caused by vacuum circuit breaker switching off shunt reactor in offshore wind farms

Wang, Dechao; Sun, Qiuqin; Yang, Jianlan; Chen, She; Wang, Rui; Zhong, Lipeng

doi:10.1049/hve2.12231

Cited by 9 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vacuum circuit breakers (VCBs) are widely used in switching wind farms because of their advantages of having lower maintenance requirements and longer operation life [11], [12], [13], [15], [17], [18], [24], [25], [26], [27], [28], [29], [32]. The VCB was modeled on ATP as a switch which was controlled using the MODELS component.…”

Section: Modeling Of the System A Modeling Of The Vacuum Circuit Breakermentioning

confidence: 99%

Comparative Assessment of Switching Overvoltages Suppression Measures in Different Wind Farm Topologies

2023

View full text Add to dashboard Cite

Mitigation techniques associating vacuum circuit breakers (VCB) were proven highly effective in reducing switching overvoltages (SOV) in wind farms. However, the structure of wind farms in modern-day power systems is not fixed to a certain topology. In this paper, the impact of changing the topology of the wind farm upon the capability of mitigation techniques in reducing SOV was investigated which is considerd the first contribution of the paper. Four wind farm topologies were selected; radial, singlesided ring, double-sided ring and star topology. Four mitigation techniques were used for each topology: the pre-insertion resistor (PIR), the RC-snubber circuit, R-L smart choke and the surge capacitor. The simulations showed the failure of the VCB to open without any suppression measure. The addition of a surge capacitor didn't improve, while the remaining suppression measures were successful. It was noticed that PIR and R-L were optimal in radial and star topologies, which successfully reduced the SOV by an average of 52%. At the same time, R-C snubber was optimal for ring topologies that reduced SOV by an average of 70%. The presented results are not universally applicable to all wind farms, but they highlight the second contribution of the paper which is proving throught the presented investigation the dependence of the performance of SOV suppression measures upon the topology of the wind farm. The third contribution is presented in the conclusion that recommends for the selection of suppression measures in windfarms; simulations should be done to include the effect of the topology of the wind farm.

show abstract

Section: Modeling Of the System A Modeling Of The Vacuum Circuit Breakermentioning

confidence: 99%

Comparative Assessment of Switching Overvoltages Suppression Measures in Different Wind Farm Topologies

2023

View full text Add to dashboard Cite

show abstract

“…R arc and R op are the arc and post‐arc resistance, respectively. The vacuum circuit breaker model is an integrated model of the continuous transition model and the Helmer model [16]. In this model, the variable resistances and an RLC branch are used to simulate the arc‐burning process and the dielectric recovery process of the vacuum circuit breaker.…”

Section: Integrated Electromagnetic Disturbance Conduction Model Of I...mentioning

confidence: 99%

Electromagnetic disturbance characteristic of typical high voltage switchgear interruption process in offshore wind farm based on integrated conduction model

et al. 2023

View full text Add to dashboard Cite

In an offshore wind farm, a high‐voltage switchgear interruption in an offshore substation creates a high‐frequency, high‐amplitude overvoltage that can cause severe electromagnetic interference problems in the intelligent electronic device. To address this issue, mathematical models, vector fitting and finite element method were used to build an integrated electromagnetic disturbance conduction model, whose accuracy was verified by large current interruption tests. Through the simulation of a typical offshore wind farm's single‐phase grounding fault interruption process, the electromagnetic disturbance characteristics and the impact of the ground position are obtained. The results show that during the fault interruption process of phase B grounded, the dominant frequency of disturbance voltage can reach 4.34 MHz, and the amplitude can reach 1.12 kV. The ground grid has a large impact on the interference voltage, which can reach a maximum value of 2.28 kV under specific conditions. The disturbance voltage in the fault process mainly comes through the current transformer, while during the interruption process, it mainly comes through the ground grid. The authors provide a method to establish the integrated electromagnetic disturbance simulation model, which can improve the accuracy of the electromagnetic disturbance conduction process simulation of intelligent components.

show abstract

“…For the pantograph-catenary system, the arc will cause serious ablation on the pantograph slide plate and contact wire, greatly shortening the service life of the system [10,11]. For the switching system, the arc will not only damage the electrodes but also cause a short circuit fault and even cause a fire accident [12,13]. Therefore, the study of arc characteristics is of great significance for improving the quality of electrical material processing and manufacturing and the service life of electric contact systems.…”

Section: Introductionmentioning

confidence: 99%

Arc stability and ablation characteristics in O₂, N₂, and air environments

Dong,

Yang,

Luo

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Arcing is widely used in the processing and manufacturing of electrical materials. Arc duration and stability play a key role in the quality and efficiency of arc welding and cutting. Additionally, the generation of the arc will cause faults, failures, and even fire, and explosion in the electrical contact system. Arc is also a critical problem that threatens the safe and stable work of electrical contact systems. Therefore, a platform for arc experiment and test analysis in a multi-atmosphere environment is built in this paper. The influence of the gas environments and gas pressures on arc breaking distance and ablation characteristics is explored. The experimental results show that the oxygen environment is conducive to rapid arc extinguishing. This phenomenon is because oxygen has strong electronegativity, which makes it easy to adsorb charged particles and leads to a density decrease of charged particles. The variation of arc breaking distance and ablation characteristics under different gas environments and gas pressures is found. The influence mechanism of gas environments and gas pressures on arc breaking distance and ablation characteristics are explored. The correlation mechanism between arc breaking distance and arc ablation characteristics is revealed. The research results provide theoretical support for improving the quality of electrical material processing and manufacturing and the service life of electric contact systems. Keywords: Arc breaking distance, arc stability, arc ablation, different arcing environments

show abstract

Investigation on overvoltage caused by vacuum circuit breaker switching off shunt reactor in offshore wind farms

Cited by 9 publications

References 25 publications

Comparative Assessment of Switching Overvoltages Suppression Measures in Different Wind Farm Topologies

Comparative Assessment of Switching Overvoltages Suppression Measures in Different Wind Farm Topologies

Electromagnetic disturbance characteristic of typical high voltage switchgear interruption process in offshore wind farm based on integrated conduction model

Arc stability and ablation characteristics in O₂, N₂, and air environments

Contact Info

Product

Resources

About

Investigation on overvoltage caused by vacuum circuit breaker switching off shunt reactor in offshore wind farms

Cited by 9 publications

References 25 publications

Comparative Assessment of Switching Overvoltages Suppression Measures in Different Wind Farm Topologies

Comparative Assessment of Switching Overvoltages Suppression Measures in Different Wind Farm Topologies

Electromagnetic disturbance characteristic of typical high voltage switchgear interruption process in offshore wind farm based on integrated conduction model

Arc stability and ablation characteristics in O2, N2, and air environments

Contact Info

Product

Resources

About

Arc stability and ablation characteristics in O₂, N₂, and air environments