In recent years, extensive research has been conducted on the ultrahigh-frequency (UHF) method. Considering that acquiring a partial discharge UHF signal is the first step in a series of tasks, such as fault diagnosis and defect location, the UHF sensor plays an important role in the UHF method. An antipodal Vivaldi antenna installed at a transformer’s joint is designed in this study according to the structural features of 750 kV transformers in China. Several effective structures, such as linear gradient microstrip and slot edge, are employed to improve the return loss and radiation characteristics. A metal box is designed after analyzing the influence of the metal around the antenna. The metal box can effectively shield against electromagnetic interference and does not deteriorate the performance of the antenna significantly. Experimental data show that this antenna is much more sensitive than the rectangular plane spiral antenna. The proposed antipodal Vivaldi antenna is suitable for detecting partial discharge in large transformers.
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2rdVEdi
via IFTTT
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
Abstract Background Henoch–Schönlein purpura is the most common vasculitis in children. Its long-term prognosis depends on renal involve...
-
Abstract Cerebral ischemia leads to multifaceted injury to the brain. A polytherapeutic drug that can be administered immediately after re...
-
Publication date: November 2017 Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, Volume 124, Issue 5 from Imaging...
-
Abstract Cerebral and systemic organ microvascular pathologies coexist with human Alzheimer’s disease (AD) neuropathology. In this study, w...
-
Grandma covered cancer with make up for months Toowoomba Chronicle In Queensland more than 740 people are diagnosed with head and nec...
-
A descriptive study of clinical and radiological profile of longitudinal extensive myelitis in a tertiary hospital in Rajasthan, India Publi...
-
Abstract Background To study whether thyroid function was associated with risk of hip or knee replacement due to primary osteoarthritis....
-
Abstract Conquering immunosuppression in tumor microenvironments is crucial for effective cancer immunotherapy. It is well known that inte...
-
Abstract: Epidermolytic ichthyosis (EI) is a rare disorder of cornification caused by mutations in KRT1 and KRT10, encoding two suprabasal e...
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου