Power network reduction and simulation in time and frequency domains to calculate voltage drop

Abstract

In the present invention the issue of calculating voltage drop at the contact points of the power network with injected power currents is proposed. The method consists of the three steps. First, the said power network is partitioned into sub-networks. Secondly, the said sub-networks are expressed in terms of their admittance matrices and voltage transfer functions, which are then fed into timing simulator handling both time and frequency to compute the voltage drop at the said contact points. To achieve better partition result, inputs, outputs including user assigned nodes for recording voltages, are utilized to absorb the sub-network without inputs and outputs into the same partition as its parent node, and generate output cone with single input and outputs. Timing simulator uses convolution to get input voltage at each time step recursively and then voltage transfer used to evaluate output voltage at the same time step with minimal computational overhead.

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