Calculation method for sensing overvoltage of power distributing line based on PSCAD (power systems computer aided design)/EMTDC (electromagnetic transients including DC)
A technology of induced overvoltage and calculation method, applied in the electrical field, can solve problems such as complex numerical calculation methods, and achieve the effects of simple application, convenient lightning protection measures, and simple application
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[0018] The present invention will be further described in detail below in conjunction with the drawings.
[0019] The PSCAD / EMTDC-based calculation method of induced overvoltage on distribution lines mainly includes the following steps:
[0020] (1) Calculate the horizontal, vertical and transverse magnetic field components of the electric field generated by lightning strikes. The calculation method includes the following steps:
[0021] 1) The lightning channel is equivalent to the vertical channel connecting the cloud and the ground, the lightning channel is divided into continuous dipoles, the electromagnetic field generated by each dipole is calculated separately, and the electromagnetic field of each dipole can be vectorized Obtain the total electromagnetic field generated by the lightning channel current. Use the electric field calculation model derived by Master and Uman to calculate the horizontal, vertical and transverse magnetic field components of the electric field gener...
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