Constructing the Optimal Bidding Path for VPPS Participating in the Spot Market Using the DDPG Reinforcement Learning Algorithm
The increasing penetration of distributed renewable energy sources has intensified the need for intelligent bidding strategies in virtual power plants (VPPs), where reliable communication and real-time information exchange are essential for coordinated energy management. This study proposes an optimal bidding path construction framework based on the Deep Deterministic Policy Gradient (DDPG) reinforcement learning algorithm for VPP participation in electricity spot markets. A Markov decision process is established to characterize dynamic market interactions, and customized state-space optimization, constrained action-space design, and a multi-objective reward function are integrated into the Actor–Critic architecture to jointly maximize economic returns while satisfying operational constraints. The framework further incorporates communication-aware resource coordination mechanisms that leverage edge computing and low-latency information exchange to enhance decision consistency under uncertain renewable generation and volatile market conditions. Experimental evaluation demonstrates that the improved DDPG algorithm increases average daily revenue by 39.1% compared with conventional DDPG, accelerates convergence by approximately 15%, reduces revenue volatility by 12%, and maintains the constraint violation rate at 1.2%. In addition to intelligent energy scheduling, the proposed methodology provides valuable insights into communicationenabled power systems, distributed electromagnetic information networks, and wireless coordination infrastructures requiring adaptive decision-making and reliable multi-node information