上游充廷大￥ Seeing the Uniform-Pricing model SHANGHAI IIAO TONG UNIVERSITY from the perspective of the load From the envelope theorem,we can obtain: dc ar =-入=p(PD=∑P) Pp refers to the load demand The price is relevant to the load demand,when the load demand is certain,the price is equal to the micro increase rate of the power purchase cost. 2016/12/22From the envelope theorem, we can obtain: refers to the load demand The price is relevant to the load demand, when the load demand is certain , the price is equal to the micro increase rate of the power purchase cost. 2016/12/22 17 Seeing the Uniform-Pricing model from the perspective of the load ) D D D Gi D D P P dc P P dP P            ܲ஽