Effect of X-ray on negative corona discharge



Lei Tao

Heilongjiang University of Science and Technology

1119703506@qq.com

Shiyou Wu

North China Electric Power University

wushiyou97@163.com



Purpose/Aim

 

  Corona discharge is a common phenomenon in power equipment. It is widely used in electrostatic precipitator, plasma and other fields. Scholars have done a lot of work on the simulation and experiment of negative corona discharge. Studies have shown that X-ray photoionization can strengthen the discharge. The method will improve the application effect of corona discharge and promote the application of corona discharge in different fields.

 

Experimental/Modeling methods

 

Based on the hydrodynamic model, the ionization effect of X-ray on particles is simulated by adding photoionization term, and the influence law of X-ray on the corona discharge voltage, amplitude and frequency of Trichel pulse is obtained. The negative corona experiment excited by X-ray is carried out, the reduction range of corona discharge voltage caused by X-ray is obtained, and the correctness of the simulation results is verified.

 

Results/discussion

 

The simulation results show that X-ray can reduce the corona discharge voltage and increase the amplitude and frequency of Trichel impulse.

 

Conclusions

 

By adding photoionization term, the influence of X-ray on negative corona discharge can be simulated, and the influence law of X-ray on negative corona discharge can be obtained, that is: reduce the corona discharge voltage and increase the amplitude and frequency of Trichel impulse.

 

Appendix



              

Figure.1 Trichel pulse  when without X-ray           Figure.2 Trichel pulses  when with X-ray