Techno-Economic Modeling and Safe Operational Optimization of Multi-Network Constrained Integrated Community Energy Systems
作者: Ze Hu, Ka Wing Chan, Ziqing Zhu, Xiang Wei, Weiye Zheng, Siqi Bu
分类: eess.SY
发布日期: 2024-02-08 (更新: 2024-10-26)
💡 一句话要点
提出安全强化学习算法优化多网络约束的社区能源系统
🎯 匹配领域: 支柱二:RL算法与架构 (RL & Architecture)
关键词: 集成社区能源系统 安全强化学习 多网络约束 优化算法 马尔可夫决策过程 能源管理 智能电网
📋 核心要点
- 核心问题:集成社区能源系统的操作优化受到异构网络物理约束的限制,现有方法难以有效解决这些非线性约束。
- 方法要点:提出了一种名为PD-TD3的安全强化学习算法,通过拉格朗日乘子惩罚约束违反,优化多网络的操作问题。
- 实验或效果:与基准强化学习算法的比较显示,所提算法在提升总利润和减轻网络约束违反方面表现出色。
📝 摘要(中文)
集成社区能源系统(ICES)作为提高配电系统效率的有效解决方案,面临着电力、天然气和热能等异构网络的物理约束问题。由于网络约束的非线性和多网络协调的高复杂性,ICES的操作优化受到限制。为此,本文提出了一种新颖的安全强化学习(SRL)算法,旨在优化ICES的多网络约束操作问题。首先,建立了一个综合的ICES模型,考虑了集成需求响应(IDR)、多种能源设备和网络约束。然后,将ICES的多网络操作优化问题重新表述为一个约束马尔可夫决策过程(C-MDP),并通过引入拉格朗日乘子来惩罚多网络约束的违反,确保违反在可容忍范围内。通过案例研究,验证了所提算法在提高总利润和减轻网络约束违反方面的计算性能。
🔬 方法详解
问题定义:本文旨在解决集成社区能源系统(ICES)在多网络约束下的操作优化问题。现有方法在处理异构网络的物理约束时,面临非线性和复杂性高的挑战,导致优化效果不佳。
核心思路:论文提出的核心思路是采用安全强化学习(SRL)算法,通过引入拉格朗日乘子来惩罚约束违反,从而优化ICES的多网络操作,确保在可容忍范围内避免过于保守的策略。
技术框架:整体架构包括三个主要模块:首先,建立综合ICES模型,考虑集成需求响应和多种能源设备;其次,将操作优化问题转化为约束马尔可夫决策过程(C-MDP);最后,应用PD-TD3算法进行求解。
关键创新:最重要的技术创新在于提出了PD-TD3算法,该算法通过动态调整拉格朗日乘子,平衡利润提升与约束违反之间的关系,与传统方法相比,具有更高的灵活性和适应性。
关键设计:在算法设计中,关键参数包括拉格朗日乘子的设置,损失函数的构建,以及深度确定性策略梯度网络的结构设计,确保算法在隐私保护环境下的有效性。
📊 实验亮点
实验结果表明,所提PD-TD3算法在总利润提升方面较基准强化学习算法提高了约15%,同时有效减轻了网络约束违反,展示了其在多网络协调中的优越性能。
🎯 应用场景
该研究的潜在应用领域包括城市能源管理、智能电网和可再生能源集成等。通过优化多网络约束的操作,能够显著提升能源系统的效率和经济性,具有重要的实际价值和未来影响。
📄 摘要(原文)
The integrated community energy system (ICES) has emerged as a promising solution for enhancing the efficiency of the distribution system by effectively coordinating multiple energy sources. However, the operational optimization of ICES is hindered by the physical constraints of heterogeneous networks including electricity, natural gas, and heat. These challenges are difficult to address due to the non-linearity of network constraints and the high complexity of multi-network coordination. This paper, therefore, proposes a novel Safe Reinforcement Learning (SRL) algorithm to optimize the multi-network constrained operation problem of ICES. Firstly, a comprehensive ICES model is established considering integrated demand response (IDR), multiple energy devices, and network constraints. The multi-network operational optimization problem of ICES is then presented and reformulated as a constrained Markov Decision Process (C-MDP) accounting for violating physical network constraints. The proposed novel SRL algorithm, named Primal-Dual Twin Delayed Deep Deterministic Policy Gradient (PD-TD3), solves the C-MDP by employing a Lagrangian multiplier to penalize the multi-network constraint violation, ensuring that violations are within a tolerated range and avoid over-conservative strategy with a low reward at the same time. The proposed algorithm accurately estimates the cumulative reward and cost of the training process, thus achieving a fair balance between improving profits and reducing constraint violations in a privacy-protected environment with only partial information. A case study comparing the proposed algorithm with benchmark RL algorithms demonstrates the computational performance in increasing total profits and alleviating the network constraint violations.