Hangzhou Qiantang River Electric Group Co., Ltd.(QRE)

Mr. James James (China)

Trade Leads

20000kVA 33kV 3-phase 2-winding Power Transformer with OCTC

  • Posted Date : 2019-12-16
  • Expiry Date: 2020-06-16
  • Category :
    • Electronic Components > Optoelectronic Components

Content :

Part I: Product
Overview for 20000kVA 33kV Power Transformer with OCTC


20000kVA 33kV high quality oil immersed
power transformer with Off-circuit tap changer has optimized design using advanced technologies, in order to
offer low noise, low partial discharge, high short circuit withstand
capability. Advanced design software are used for electromagnetic calculation
and design of transformer, while 3-D, 2-D CAD software for structural design
ensure sufficient safety margin during short circuit period. This is based on
in-depth theoretical and experimental studies on magnetic, thermal, mechanical
strength and short circuit strength. To ensure reliability of the transformer,
the insulation is decided based on calculation on main and vertical insulation.
The accurate calculation of the electric field distribution in inner coils will
ensure voltage gradient and at coil end it will ensure lower partial discharge.


Part II: Product
Features


1.  Potential
distribution is effectively improved by application of software to calculate
the impact and gradient potential distribution. The potential calculation is
also done between various parts of the coil including between the coil and coil
and earthing.






2.  Low loss: Magnetic flux leakage calculation and corresponding
measures to effectively reduce the stray loss, and in the meantime effectively
prevent local overheating and lower temperature rise of winding hot spots. The
electromagnetic optimizing design software is applied to optimize the core and
winding design.






3.  High resistance to short-circuit capacity: Apply transformer
resistance to short-circuit capacity accounting software to design HV winding
and LV winding. HV winding will be designed as central outlet, up and down
parallel connection with axial oil path; the regulating winding will be
designed as central outlet in the middle of HV winding with up an .qretransformer.com