A Power Flow Tracing Method Based On Circuit Analy-sis Of Power Supply Path

In the power market, the calculation of transmission cost requires to quantize the usage allocation of power grid for each power plant, and it leads to the demand of ana-lyzing the composition of power flow. The key to settle this problem is how to describe the power supply process of each source. Consequently, the problem of power flow trac-ing is brought out. However, the premise conditions of present methods are not strict enough, and the coupling power supply process in multiple-source network cannot be decoupled to analyze. In order to overcome these problems, this paper attempts to de-couple the multiple-source network and attain a corresponding power supply network, power supply path which could describe the power supply process independently of a certain source, based on the power components theory. According to these equivalent networks, discuss each source's power transmission process based on the basic circuit theories and digraph theory from the macroscopic aspect and microscopic aspect respec-tively. The macroscopic analysis of power supply path stresses on describing the distri-bution status of the power injected by the source. The main contents of this analysis is to use the branch parameters to calculate the source's power distribution coefficient in the network and shows them on the corresponding figures. The microscopic analysis of power supply path stresses on describing the power transmission process more precisely so that we can clearly know that the power in the branches where they come from and where they go. The main contents of this analysis is to use the digraph to discuss the power transmission relation between any two branches in the network, and express the analytical results in the forms of branch power incidence matrix.