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Damping ratio and out-of resonance are two key parameters of compensation network. The unsuitable parameters setting will bring some adverse affluence on compensation network. This paper analyses how arc suppression coils adopting different tuning principles affect power compensation network and proposes how to set them reasonable. Application of these methods has solved some problems concerning operation...
A method of single phase ground fault line selection in distribution networks with the application of wavelet transform technique is presented in this paper. The modulus maxima of the wavelet transform are extracted to determine the moment of the single phase ground fault. The magnitude and polarity of wavelet transforms, which belong to zero-sequence currents on all lines, are compared to each other...
The paper deals with the temporary overvoltages that build up in radial MV distribution networks following the inception of a 1-phase-to-ground fault (1-Phi -to-Gr). For extended cable/overhead MV distribution networks with ungrounded neutral, in case of low resistance faults at critical stretch of overhead lines, in [1] it has been evidenced that the temporary overvoltages on healthy phases can be...
The neutral grounding mode selection of distribution is one of the concernful problems faced in the modification of distribution. This paper researches and analyzes the three different neutral grounding modes of ungrounded-neutral mode, neutral Peterson coil grounding mode and neutral resistance grounding mode respectively. The selecting schemes of neutral grounding mode to different grid structure...
The MV networks are not construct as transposed that means they are non-symmetrical. This factor causes the unbalancing of the phase voltages and the zero component of voltage appears there. The distribution networks with overhead lines are operated as compensated with the arc-suppression coil connected to node of transformer. The operation with the arc-suppression coil out of tune is accompanied...
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