1. Wang, X.F., Zhu, X., Yin, Y., et al.: Time characteristics and temperature characteristics of cable isothermal relaxation current. Insulat. Mater. 53(9), 59–67 (2020). (in Chinese)
2. Tiwana, A.P.S., Reddy, C.C.: On the anomalous charging and discharging currents in LDPE under high electric fields. IEEE Trans. Dielectr. Electr. Insul. 25(1), 127–136 (2018)
3. Feng, L.J., Zhu, Xi., Yin, Y., et al.: Dielectric response and partial discharge characteristics of XLPE insulation cable during ageing process. In: The test method of insulation aging and residual life evaluation of XLPE cable is adopted. Insulating Materials, Vol. 55, no. 5, pp. 81–87 (2022). (in Chinese)
4. Chen, X.P., Wu, H.P., Zhu, G.Y., et al.: Research on XLPE cable insulation performance based on IRC and electrothermal accelerated aging test. J. Northeast Electr. Power Univ. 40(3), 26–32 (2020). (in Chinese)
5. Simmons, J.G., Tam, M.C.: Theory of isothermal current and the direct determination of trap parameters in semiconductors and insulators containing arbitrary trap distributions. Phys. Rev. B 7, 3706–3713 (1973)