# Increment of volumetric density of dielectric losses in HVDC cables

Symbol
$\Delta w_d$
Unit
W/m$^3$
Formulae
$\left(\frac{r}{r_{osc}}\right)^{2\left(\delta_i-1\right)} e^{\alpha_i \left(a_i \left(r^2-{r_{isc}}^2\right)+\frac{\Delta \theta_i-a_i \left({r_{isc}}^2-{r_{osc}}^2\right)}{r_{isc}-r_{osc}} \left(r-r_{isc}\right)+\theta_c\right)+\gamma_i \frac{{\delta_i}^2 {U_o}^2 \left(\frac{r}{r_{osc}}\right)^{\delta_i-1}}{r_{osc} \left(1-\left(\frac{r_{isc}}{r_{osc}}\right)^{\delta_i}\right)}}$
Related
$\alpha_i$
$\delta_i$
$\Delta \theta_i$
$\gamma_i$
$r_{isc}$
$r_{osc}$
$\theta_c$
$U_o$
$w_d$
Used in
$W_{d,DC}$