Abstract
High-voltage circuit breakers (HVCB) are critical protection and control equipment in the electric transmission and distribution system. Analysis of the arc quenching process in the nozzle through modelling and simulation is a key stage in the development process of the HVCB. This paper introduces the first stage of simulation in which the flow is simulated without an arc, which helps to investigate the characteristics of supersonic flow. A model built based on an experimental study was used in the study. Characteristics of the flow including the development of shock and flow separation from the nozzle wall and the electrode surface were observed. Furthermore, the investigation of Mach number and shock strength can help identify flow characteristics. The impact of inlet pressure and the location of the downstream electrode on the Mach number distribution and pressure distribution were analysed. The increase in inlet pressure resulted in an increase in the shock strength. Also, the results show that the position of the downstream electrode has a significant impact on the flow behaviour.
| Original language | English |
|---|---|
| Pages (from-to) | 734-738 |
| Number of pages | 5 |
| Journal | IET Conference Proceedings |
| Volume | 2023 |
| Issue number | 46 |
| DOIs | |
| Publication status | Published - 2023 |
| Event | 23rd International Symposium on High Voltage Engineering, ISH 2023 - Glasgow, United Kingdom Duration: 28 Aug 2023 → 1 Sept 2023 |
Keywords
- CIRCUIT BREAKER
- FLOW PATTERN
- SUPERSONIC FLOW