Study on voltage distribution characteristic of a 363 kV fast multi‐break vacuum circuit breaker

Ai, Shaogui; Yu, Xiaoli; Huang, Yongning; Yang, Fan; Ye, Fan; Li, Xing

doi:10.1049/joe.2018.8648

Cited by 8 publications

(1 citation statement)

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“…During this process, MCB A , MCB B , and MCB C are opened. When the arc voltage generated by the MCBs in the opening process meets the IGBT forward voltage, SSCB 1A , SSCB 1B , and SSCB 1C are triggered on to prepare for the rapid disconnection of the current, and the current is transferred from the mechanical branch to the solid-state branch [6], as shown in Figure 3b. Simultaneously, the phase sequence connection mode is still A-a, B-b, C-c.…”

Section: Design and Test Of The Pse Devicementioning

confidence: 99%

Novel power electronic device for power angle stability control

Huang

et al. 2022

The Journal of Engineering

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This letter proposes a novel phase sequence exchange (PSE) device. When the generator loses synchronization and the power angle gradually increases, the primary side of the contact line is disconnected and quickly connected in a staggered phase using the power device with fast breaking characteristics. The three phases A, B, and C of the generator are connected to the systems C, A, and B. The power angle can be reduced by 120° instantaneously, thereby reducing system instability. First, the mechanism of the PSE device stability control is explained and the optimal PSE power angle threshold is calculated. After that, the structure and working process of the PSE device were proposed, the PSE prototype was manufactured, and an experimental platform was built for verification. Finally, a control method of the PSE device is proposed to reduce the impact and verified on the experimental platform.

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Section: Design and Test Of The Pse Devicementioning

confidence: 99%