RESEARCH ON ENERGY ROUTING STRATEGY FOR HIGH-PENETRATION PHOTOVOLTAIC DISTRIBUTION NETWORK BASED ON GENERALIZED GRAPH THEORY AND DDPG ALGORITHM

Li Hong; Wang Jiawei; Yang Jianfeng; Fu Yiping

doi:10.19912/j.0254-0096.tynxb.2025-0698

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (1) : 127-135. DOI: 10.19912/j.0254-0096.tynxb.2025-0698

RESEARCH ON ENERGY ROUTING STRATEGY FOR HIGH-PENETRATION PHOTOVOLTAIC DISTRIBUTION NETWORK BASED ON GENERALIZED GRAPH THEORY AND DDPG ALGORITHM

Li Hong, Wang Jiawei, Yang Jianfeng, Fu Yiping

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Abstract

To address PV curtailment and power deficits in high-penetration PV distribution networks using energy router （ER）, this paper introduces a high-penetration photovoltaic energy router interconnection system （HP-PVERIS） and proposes a two-layer coherence-driven energy routing strategy combining generalized graph theory and deep deterministic policy gradient （DDPG）. The first layer uses an improved generalized graph theory model for multi-objective optimization of node conversion loss, line loss, congestion, and load balancing. The second layer applies DDPG-based dynamic multi-path power allocation, feeding optimized topology parameters back to the first layer to form a bi-layer routing strategy. Simulations show the approach effectively reduces losses, alleviates congestion, balances loads, and enhances PV accommodation and interconnection capacity.

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distributed energy / photovoltaic power generation / graph theory / energy policy / energy router / high-penetration photovoltaic distribution grid

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Li Hong, Wang Jiawei, Yang Jianfeng, Fu Yiping. RESEARCH ON ENERGY ROUTING STRATEGY FOR HIGH-PENETRATION PHOTOVOLTAIC DISTRIBUTION NETWORK BASED ON GENERALIZED GRAPH THEORY AND DDPG ALGORITHM[J]. Acta Energiae Solaris Sinica. 2026, 47(1): 127-135 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0698

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