Hotspot Temperature Monitoring of Fully Insulated Busbar Taped Joint

Conductor temperature monitoring for the fully insulated busbar prefabricated joint considering contact resistance

“…The form of the axial function can be written as follows [18]: $$$$\begin{equation}{T}_{\rm{j}} = f({T}_1,{T}_2) = a{T}_1 + (1 - a){T}_2\end{equation}$$$$…”

“…Since this paper is an improvement on the basis of our previous work, the general introduction of its basic idea and analysis steps is given below first [18].…”

“…The establishment process of RDTC model is introduced in [18] in detail, and only the main points are given below. The structural and thermal parameters of the fully insulated busbar are illustrated in Table 1.…”

“…According to [18], ADTC needs only two measuring spots in the busbar, with one spot adjacent to the joint end and the other one remote enough from the joint for longitudinal heat flow to be zero. In this paper, the distances between the two points and the joint end are set to 0.2 and 2.2 m, respectively.…”

“…In our previous papers, an alternative indirect approach was put forward to realize the hotspot temperature monitoring for the cable joint in two steps [16], which shows strong robustness with the variable thermal environments and uncertain thermal parameters of the joint [17]. Afterwards, the authors applied this method to the fully insulated busbar taped joint, which indicates the high model precision and strong robustness to the solar radiation impact [18]. The validity of the above method to the prefabricated joint, where air convection and thermal radiation are the main forms of heat transfer, has yet to be verified.…”