Partitional Decoupling Method for Fast Calculation of Energy Flow in a Large-Scale Heat and Electricity Integrated Energy System
Partitional Decoupling Method for Fast Calculation of Energy Flow in a Large-Scale Heat and Electricity Integrated Energy System
复制标题
大规模热电一体化能源系统能量流快速计算的分区解耦方法
DOI：
10.1109/tste.2020.3008189
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发表时间：
2021-01
影响因子：
8.8
通讯作者：
Zhi Wu
中科院分区：
文献类型：
--
作者：
Suhan Zhang;Wei Gu;Shuai Yao;Shuai Lu;Suyang Zhou;Zhi Wu
热电一体化能源系统（HE-IES）的广泛发展，为灵活的多能优化管理提供了条件，提高了能源效率，造福了环境。随着系统规模和复杂性的增加，快速、准确、可靠地计算能量流变得至关重要。为了解决这一问题，我们提出了一种基于分解能量流模型的大尺度HE-IES局部解耦方法。给出了考虑不同系统规模和拓扑结构的解耦计算机制，包括解决水力初始化引起的不收敛问题的解耦模式和修正解耦系统公共节点变量的迭代模式。此外，针对极端情况下能量流计算中的不收敛问题，引入了单位转换法。实例研究表明，该方法能够在不考虑系统规模和拓扑的情况下，以较高的效率提供准确的能量流计算，特别是在环系统中。数值仿真进一步验证了该方法的非收敛性。
Wide development of the heat and electricity integrated energy system (HE-IES) has provided flexible multi-energy optimization management, which improves energy efficiency and benefits the environment. It is essential to calculate energy flow quickly, accurately, and reliably as the system scale and complexity increase. To handle this problem, we propose a partitional decoupling method based on a decomposed energy flow model for the large-scale HE-IES. The computation mechanisms are presented considering various system scales and topologies, which consist of decoupling mode to solve the non-convergence caused by hydraulic initialization and the iteration mode to correct the variables at common nodes of decoupled systems. Moreover, a unit conversion method is introduced to solve the non-convergence problem in energy flow calculation under extreme scenarios. Case studies show that the proposed method provides accurate energy flow calculations with higher efficiency regardless of system scale and topology, especially in looped systems. Numerical simulation further verifies the effectiveness of the proposed method for non-convergence.
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