363kv circuit breaker based on fast repulsion switch

Abstract

The invention relates to a 363 kV circuit breaker based on rapid repulsion switches. The 363 kV circuit breaker is characterized in that the 363 kV circuit breaker comprises 12 repulsion switches, the first repulsion switch and the second repulsion switch are connected in parallel, the third repulsion switch and the fourth repulsion switch are connected in parallel, the fifth repulsion switch and the six repulsion switch are connected in parallel, the seventh repulsion switch and the eighth repulsion switch are connected in parallel, the ninth repulsion switch and the tenth repulsion switch are connected in parallel, the eleventh repulsion switch and the twelfth repulsion switch are connected in parallel, and the above parallel units are connected in series to form the circuit breaker. According to the 363 kV circuit breaker, problems of over-long switch-off time and over-high impulse current of the conventional circuit breaker can be solved through the above design, a fault current can be rapidly switched off, the thermal shock and the high current impact on other equipment in a line by the fault current can be reduced, and the requirement and the investment of the other equipment in the line can be reduced.

Description

technical field [0001] The invention relates to the field of electrical application technology, in particular to a 363kV circuit breaker based on a fast repulsion switch. Background technique [0002] With the development of the power grid, the capacity of the power grid is getting larger and larger, and the short-circuit current exceeds the standard seriously. The opening time of the existing 330kV voltage level circuit breaker is generally more than 50ms, which cannot quickly break the short-circuit current, causing transformers and other power grid equipment to withstand short-circuit for a long time Shock, affecting equipment safety. At the same time, because the short-circuit current exceeds the standard, the substation is forced to adopt the bus segment operation mode, which reduces the reliability of power supply. In addition, the voltage sag caused by the short circuit of the system seriously affects the quality of power supply. [0003] The patent "a fast switch b...

AI Technical Summary

Problems solved by technology

[0004] On this basis, the present invention proposes a 363kV circuit breaker based on a fast repulsion switch, which can solve the problems of too long breaking time and excessive inrush current of traditional circuit breakers, and can quickly cut off the fault current, reducing the impact of fault current on other circuit breakers. The thermal shock and high current shock of equipment reduce the requirements and investment of other equipment in the line

Images