Reinforcement Learning-Adaptive Hybrid Metaheuristic for Optimal Distributed Generation and Shunt Capacitor Placement with Embedded V2G Dispatch in Distribution Networks
DOI:
https://doi.org/10.22581/0844Keywords:
Adaptive Operator Selection , Distributed Generation Placement, Hybrid GOA-GWO, Multi-algorithm Benchmarking, Non-parametric Statistical Validation, Vehicle to Grid IntegrationAbstract
This paper benchmarks six metaheuristics—including a reinforcement-learning- adaptive Grasshopper– Grey Wolf optimiser (RL-GOA-GWO) with Q-learning- based adaptive operator selection—and a four-layer multi-layer perceptron (MLP) surrogate for joint placement of distributed generation (DG) and shunt capacitor (SC) banks with embedded rule-based vehicle-to-grid (V2G) dispatch. A six- objective weighted-sum formulation is evaluated on five systems (IEEE 33, 69, 123-bus balanced equivalent, MV Oberrhein 179, Custom 567-bus) under identical budgets (30 agents, 100 iterations, n=5 runs). The RL-adaptive advantage is topology-dependent: marginal on small radial feeders but producing a large effect on the rugged IEEE-123 landscape (mean improvement 6.8%, Cohen’s d= − 1.12, 95% confidence interval (CI) [−2.43,0.19]). Particle Swarm Optimization (PSO) is competitive throughout, consistent with No-Free-Lunch theory. Friedman rank tests and Cohen’s d with 95% CIs provide exploratory validation; confirmatory studies with n≥25 are recommended.
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