吹气对氮气火花隙开关重复频率运行性能的影响

 基于紧凑重复频率Tesla变压器实验平台，运用设计加工的紧凑型内部气流循环式火花隙开关，对吹气提高火花隙开关重复频率运行性能进行系统的实验研究，结果表明：重复频率小于50 Hz时，火花隙开关击穿电压不稳定度(RMS)小于5%，不需要吹气；在给定吹气速度下，火花隙开关重复频率运行存在临界重复频率；火花隙开关重复频率运行存在最佳吹气速度，且最佳吹气速度与重复频率之间满足线性关系，并可由实验确定；在优化吹气速度条件下，当气压处于0.7~1.5 MPa范围时，该火花隙开关击穿电压不稳定度(RMS)小于3%；在2.0 MPa的压强范围内，该吹气式火花隙开关可稳定工作至重复频率300 Hz，击穿电压400 kV。

Effect of gas flow velocity on repetitive operation performance of nitrogen spark gap switch

Effect of gas flow velocity on repetitive operation performance was experimentally investigated for a spark gap switch with a compact gas blowing system, based on a compact repetitive Tesla transformer. The experimental results were presented and analyzed. The conclusions are shown as follows: (1) for a repetition rate lower than 50 Hz, the pulse-to-pulse instability (RMS) of the breakdown voltage of the spark gap switch is smaller than 5% and it is possible to spare a gas blowing system; (2) given a gas flow velocity, there exists a critical repetition rate for the stable operation of the spark gap switch; (3) for the repetitive operation of the switch in a given repetition rate, there exists an optimal fan frequency, which is linear with the repetition rate and can be determined by expe