Simulation Analysis of Profit and Loss of Pumped Storage Units Participating in Spot Market

Under the new electricity price policy mechanism, China's pumped storage units will enter the spot market to participate in mediation and profit. At present, pumped storage units are strictly managed by dispatching orders. This paper establishes a profit model of pumped storage units in the spot market under the call on demand mode. By integrating their power and electricity curves and real-time price curves, the operation simulation of pumped storage units participating in the spot market under the call on demand mode is carried out. The results indicate that under the normal electricity price trend curve, pumped storage units have a certain profitability when operating according to the conventional pumping and power generation timing. However, under reverse electricity price conditions, they will face a greater risk of losses. Improving the autonomy of unit power regulation is an effective way to reduce losses.