Quotation method for virtual power plant to participate in spot market transaction

The invention provides a quotation method for a virtual power plant participating in spot market transaction. The method comprises the following steps: constructing a capacity upper limit model of a virtual power plant aggregator considering line loss change; based on the difference quotation of the distributed power supplies capable of being aggregated by the virtual power plant, under the condition that the virtual power plant responds to the winning capacity, the optimal aggregation strategy model of the virtual power plant aggregator is constructed, and the minimum cost is obtained through the optimal aggregation strategy model. Calculating according to the profit rate of the virtual power plant to obtain a quotation sample data set of the current bid winning amount; and constructing an improved BP neural network, inputting a quotation sample data set obtained by the aggregation strategy model into the improved BP neural network, and fitting a quotation curve of the virtual power plant aggregator. The cha