考虑网损系数序贯修正的省间集中竞价交易路径折算方法OA

The inter-provincial multi-channel centralized bidding transaction is a medium-and long-term transaction mechanism in the electricity market,which adopts a multi-channel centralized optimization clearing model based on path combination to achieve optimal resource allocation.The network loss of the transmission channel in this model is calculated by multiplying each power flow through the transmission channel by the network loss coefficient and adding it up.However,with the expansion of the electricity market scale,there will be reverse power flows on the transmission channels that are opposite to the basic power flows,creating an"offsetting"effect of positive and negative power flows.This will lead to the calculation of network losses being repeatedly superimposed,making the actual network loss smaller than the calculated network loss,resulting in a loss of total social welfare.In order to make the calculation of network losses more accurate and restore the loss of social welfare,this paper uses directional coefficients to characterize the net power flow of transmission channels,and proposes a sequential correction method and for the network loss coefficient of transaction paths and optimization modeling,reflecting the reduction of network losses caused by the"offsetting"of power flows on the network loss coefficient.Finally,simulation operation data of the inter-provincial multi-channel centralized bidding transaction are used for numerical verification.Results demonstrate that the proposed method effectively avoids duplicate network loss calculation caused by"offsetting"of positive and negative power flows and improves the total social welfare after optimal clearing.