TY - GEN
T1 - Research on the Dynamic Capture by Particle Trap in 1100 kV Gas Insulated Transmission Line for Metal Particles
AU - Zhang, Bo
AU - Yao, Yongqi
AU - Wang, Zhijun
AU - Tan, Shengwu
AU - Wang, Zhigang
AU - Zhong, Lisheng
AU - Du, Yingqian
AU - Zhang, Hao
AU - Liu, Yapei
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - The 1100 kV gas insulated transmission line (GIL) is applied to the Sutong high-voltage transmission project in China, and its rated voltage level is the highest in the world. In order to ensure the insulation reliability, when designing the product, a particle trap is arranged near the insulator to capture nearby metal particles and reduce the chance of flashover on the surface of the insulator. The internal insulation structure and geometric size of GIL determine the potential gradient distribution. The particle motion is affected by its own gravity, coulomb force, electric field gradient force, gas resistance and friction. The motion law is complicated and difficult to measure. In this paper, the numerical modeling method is used to establish the motion model of metal particles near the trap of 1100 kV GIL. The trajectories of particles for different sizes at different voltages and initial positions are obtained. By analyzing the law of particle motion, the GIL product pre-conditioning test program is guided, and the different sizes of particles that may exist in the GIL are classified and captured by the step-by-step voltage applying voltage method, thereby increasing the trapping effect of the particle trap and improving the insulation reliability of on-site operation in the product. Finally, the feasibility of the preconditioning test scheme design using this numerical method is verified by the particle motion observed by the camera.
AB - The 1100 kV gas insulated transmission line (GIL) is applied to the Sutong high-voltage transmission project in China, and its rated voltage level is the highest in the world. In order to ensure the insulation reliability, when designing the product, a particle trap is arranged near the insulator to capture nearby metal particles and reduce the chance of flashover on the surface of the insulator. The internal insulation structure and geometric size of GIL determine the potential gradient distribution. The particle motion is affected by its own gravity, coulomb force, electric field gradient force, gas resistance and friction. The motion law is complicated and difficult to measure. In this paper, the numerical modeling method is used to establish the motion model of metal particles near the trap of 1100 kV GIL. The trajectories of particles for different sizes at different voltages and initial positions are obtained. By analyzing the law of particle motion, the GIL product pre-conditioning test program is guided, and the different sizes of particles that may exist in the GIL are classified and captured by the step-by-step voltage applying voltage method, thereby increasing the trapping effect of the particle trap and improving the insulation reliability of on-site operation in the product. Finally, the feasibility of the preconditioning test scheme design using this numerical method is verified by the particle motion observed by the camera.
KW - 1100 kV GIL
KW - metal particle
KW - particle trap
KW - pre-conditioning test
UR - https://www.scopus.com/pages/publications/85084037042
U2 - 10.1109/EI247390.2019.9062214
DO - 10.1109/EI247390.2019.9062214
M3 - Conference contribution
AN - SCOPUS:85084037042
T3 - 2019 3rd IEEE Conference on Energy Internet and Energy System Integration: Ubiquitous Energy Network Connecting Everything, EI2 2019
SP - 779
EP - 783
BT - 2019 3rd IEEE Conference on Energy Internet and Energy System Integration
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd IEEE Conference on Energy Internet and Energy System Integration, EI2 2019
Y2 - 8 November 2019 through 10 November 2019
ER -