Abstract
The features of the dielectric rod defects and the rod-electrod defects of polymer insulators were investigated by using the developed complex method of contactless remote diagnostics of high-voltage insulators health, which includes the initial detection of local areas with elevated electric field gradients as well as measurement of a set of partial discharges characteristics. The radiation of extra-large partial discharges was detected and partial discharges features were investigated. According to the measurement results, a diagram was constructed for the electro-physical processes that accompany the emission of extra-large partial discharges; and the reasons for their occurrence were established.
Highlights
The increase in electricity demand, the complication of power systems and the use of modern technologies lead to the need to improve relay protection (RP)
To obtain the parameters of the statistical distributions of normal and emergency modes, simulation modeling implied 10 000 iterations, including single-phase short-circuits along the third section of power line, which represents the backup zone of the observed protection RP1
Based on the fact that artificial neural networks (ANN) and decision tree (DT) are considered as reliable methods, we suppose that the probabilities of reliable operation of the ANN and DT blocks (Figure 10) are the same
Summary
The increase in electricity demand, the complication of power systems and the use of modern technologies lead to the need to improve relay protection (RP). The use of microprocessor technology in RP devices provides the flexibility and versatility of their work. One of the modern directions in the evolution of RP is the development of multiparameter (multidimensional) algorithms [1,2,3,4,5,6]. Their basis is the use of multiple parameters of measured currents and voltages in the recognition of the operation modes of the electrical network. The redundancy of the information base of such RP provides the increase in the technical excellence of devices, including their sensitivity, reliability and speed
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
