Transient Characteristics Analysis of 500kV Parallel Circuit Breaker Based on Highly Coupled Split Reactor
| Autor: | Wenjia Xu, Weihua Xiang, Changyuan Xiang, Zutao Xiang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
lcsh:GE1-350
Materials science Transient recovery voltage Emtp 0211 other engineering and technologies Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology 010501 environmental sciences Series and parallel circuits Fault (power engineering) 01 natural sciences law.invention Capacitor law Control theory Hardware_INTEGRATEDCIRCUITS 021108 energy Transient (oscillation) lcsh:Environmental sciences Circuit breaker 0105 earth and related environmental sciences Electronic circuit |
| Zdroj: | E3S Web of Conferences, Vol 118, p 02048 (2019) |
| ISSN: | 2267-1242 |
| Popis: | With the continuous expansion of power system capacity, parallel high-voltage circuit breakers with a Highly Coupled Split Reactor (HCSR) have a potential application for limitation of high short-circuit current. However, as the parallel circuit breakers open at different time, the residual voltage of the split reactor on the post-open circuit breaker is higher and the stray capacitors of HCSR form high-order oscillating circuits, which may lead to serious transient recovery voltage (TRV). Therefore, it is necessary to analyze and simulate the transient characteristics of 500kV HCSR. Firstly, the equivalent model of HCSR circuit breakers is built in EMTP simulation plat-form, and its TRV generation is analyzed. Then, the TRV of parallel circuit breakers under different operating conditions and fault types is simulated and calculated. Finally, according to the statistical calculation results, the protection measure of 0.2uF shunt capacitance to limit rise rate of TRV is proposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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