| 引用本文: | 徐长福,赵新冬,梁 伟,等.基于数字孪生技术的GIL综合管廊气体泄漏与排除全过程风险性评估[J].电力系统保护与控制,2025,53(03):160-171.[点击复制] |
| XU Changfu,ZHAO Xindong,LIANG Wei,et al.Risk assessment of gas leakage and elimination in GIL utility tunnels based on digital twin technology[J].Power System Protection and Control,2025,53(03):160-171[点击复制] |
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| 摘要: |
| 针对气体绝缘输电线路(gas insulated transmission line, GIL)管廊内绝缘气体泄漏导致有害气体六氟化硫(SF6)扩散复杂分布的问题，提出了一种基于数字孪生技术的全过程仿真风险评估方法。首先，根据苏通GIL管廊的实际工况和通风系统的部署，归纳综合管廊内气体大面积泄漏时的全过程通用排除方案。然后，以SF6气体泄漏的物理过程与数学机理为基础，在虚拟空间中构建管廊的数字孪生模型，并设置了气体泄漏的约束条件。其次，通过模拟孪生空间内SF6大面积泄漏气体的扩散分布，推演排除过程中SF6分布数据并将其可视化。最后，结合各阶段可视化结果，对GIL综合管廊内气体泄漏全过程进行风险评估，从而为制定管廊内的安全撤离方案与实现智能化监控提供参考。 |
| 关键词: 苏通GIL管廊 数字孪生 SF6气体 气体扩散行为 推演 |
| DOI：10.19783/j.cnki.pspc.240636 |
| 投稿时间：2024-05-23修订日期：2024-08-25 |
| 基金项目:国家电网有限公司科技项目资助(JF2023034) |
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| Risk assessment of gas leakage and elimination in GIL utility tunnels based on digital twin technology |
| XU Changfu1,ZHAO Xindong1,LIANG Wei1,HE Xing2,BU Yikang2 |
| (1. State Grid Jiangsu Electric Power Research Institute, Nanjing 211103, China;
2. Shanghai Jiao Tong University, Shanghai 200240, China) |
| Abstract: |
| To address the challenges posed by the complex distribution of sulfur hexafluoride (SF6) gas leakage in gas-insulated transmission line (GIL) utility tunnels, this paper proposes a simulation-based risk assessment approach based on digital twin technology. Firstly, a general exclusion plan for large-scale gas leakage is summarized based on the actual working conditions of the Su-Tong GIL utility tunnel and the deployment of the ventilation system. Then, based on the physical process and mathematical mechanism of SF6 gas leakage, a digital twin model of the utility tunnel is constructed in virtual space, and the constraints of gas leakage are set. Secondly, by simulating the diffusion distribution of large-scale SF6 gas leakage in the twin space, the distribution data of SF6 during the exclusion process is deduced and visualized. Finally, combining the visualization results of each stage, a full-process risk assessment of gas leakage in the GIL utility tunnel is carried out, providing a reference for formulating safe evacuation plans and achieving intelligent monitoring in the corridor. |
| Key words: Su-Tong GIL utility tunnel digital twin SF6 gas gas diffusion behavior deduction |
