Adjoint variable method for transient nonlinear electroquasistatic problems

Many optimization problems in electrical engineering consider a large number of design parameters. A sensitivity analysis identifies the parameters with strongest influence on problem interest. This paper introduces adjoint variable method as an efficient approach to study sensitivities nonlinear electroquasistatic time domain. In contrast more common direct method, has computational cost nearly independent The is applied field grading material performance 320 kV cable joint specimen, which modeled Finite Element transient problem. Special attention paid treatment quantities interest, are evaluated at specific points or space. It shown that valuable tool this strongly and highly technical example.