Electricity Trading Mechanisms Considering Interregional Sharing of Reserve Ancillary Services

Differences in natural resources among regions in China have led to differences in the energy structure of the power system. With the green and low-carbon transformation of the power system, the demand for cross-provincial and cross-regional consumption of renewable energy is becoming more and more urgent, and the optimal allocation of power resources across a wide area after considering large-scale integration of renewable energy into the grid will become the mainstream trend of China's power system in the future. Currently, the inter-area contact line transactions in the world only consider the electric energy market transactions, forming the energy scarcity price reflecting the matching of supply and demand, and the regional reserve market reflecting the matching of supply and demand of Reserve Ancillary Service was not established. This paper constructs a market clearing model and settlement method based on the market mechanism of market participants' request for reserve demand, taking into account the reserve of inter-regional reserve transmission channels. Through empirical analysis, this method can improve the level of renewable energy consumption in the interconnected region, reduce the overall market operating costs, and also achieve a reasonable sharing of costs.