Electric-field Simulation and Application of Detector Installing for ±800kV UHVDC-LCC Converter

To explore how the installation of full-view micro-sensor detector will affect the electric-field distribution of ±800kV converter valve. This work builds the 3D model of ±800kV converter valve tower, and we utilize Ansoft to simulate the electric-field distribution of ±800kV converter valve tower where the full-view micro-sensor detector installs. Results show that, the installed locations have nearly no influence on the maximum electric-field distribution of non-direct contacted components; but for the direct-contacted components where the full-view micro-sensor detector installs, the maximum electric-field would increase to a certain degree after the full-view micro-sensor installing. The electric-fields of components such as valve component 11and steel girder on top shield all increase than before, and the maximum electric-field of valve component 11 increases from 1.02×10
⁶
V/m to 1.52×10
⁶
V/m, therefore the reason why the electric-field increases is analyzed. Results about full-view micro-sensor detector installing at different locations suggests, the maximum electric-field distribution at different positions are different, and the electric-field distribution at different locations are different as well, but the maximum electric-field value is still <;3kV/mm. Thus it can be seen that, although the full-view micro-sensor detectors are installed in different components and different locations that can lead to the increase of maximum electric-field, yet the insulation condition of valve tower has no change, and the insulation design still meets the requirements well. The experiment validates that the installation of full-view micro-sensor detector is feasible finally.