Research on the application of digital twin in coal mine power grid
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摘要: 立足于数字孪生的基本概念和内涵，分析了数字孪生技术在煤矿电网中的应用优势：以同步实体运行状态、数字化模拟运行 2 种手段来辅助煤矿电网的运行管理，具有数据驱动、实时更新、同步反馈的特点。提出了由煤矿电网物理实体层、煤矿电网数字孪生模型层、用户管理服务层、数据交流层组成的煤矿电网数字孪生体系基本架构，从物理实体、数字孪生模型2个方面探索了煤矿电网数字孪生体系运行模式。介绍了建立煤矿电网数字孪生体系的关键技术：煤矿电网数字孪生模型构建、智能数据采集、基于5G的智能通信、数字孪生智能数据库、数字孪生设备智能管理平台。给出了数字孪生技术在煤矿电网中的具体应用场景，包括煤矿井下电气设备状态评估、煤矿电网故障定位和保护、煤矿电网智能监控、煤矿井下线路智能巡检。将数字孪生技术应用在煤矿电网中，对煤矿电网的状态和运行进行动态仿真建模，一方面可以满足当今规模庞大的煤矿电网相对地面电网更高的运行要求，保障煤矿生产安全性，另一方面可推进煤矿电网的智能化进程，实现数据资源高效合理利用。Abstract: Based on the basic concepts and connotations of digital twin, this paper analyzes the application advantages of digital twin technology in coal mine power grid. The operation management of the coal mine power grid is assisted by two means of synchronous entity operation status and digital simulation operation. The technology has the characteristics of data-driven, real-time update and synchronous feedback. The basic framework of the digital twin system of the coal mine power grid is proposed. The framework is composed of physical entity layer, digital twin model layer, user service management layer and data exchange layer. The operation mode of the digital twin system of the coal mine power grid is explored from two aspects of the physical entity and the digital twin model. This paper introduces the key technologies for establishing the digital twin system of the coal mine power grid. The technologies include digital twin model construction of coal mine power grid, intelligent data acquisition, intelligent communication based on 5G, digital twin intelligent database, and digital twin equipment intelligent management platform. The application scenarios of digital twin technology in the coal mine power grid are proposed. The scenarios include the condition evaluation of underground electrical equipment, fault location and protection of the coal mine power grid, intelligent monitoring of the coal mine power grid and intelligent inspection of underground lines. The digital twin technology is applied to the coal mine power grid to carry out dynamic simulation modeling on the state and operation of the coal mine power grid. On the one hand, the higher operation requirement of the current large-scale coal mine power grid relative to the ground power grid can be met. The safety of coal mine production can be guaranteed. On the other hand, the intelligent process of the coal mine power grid can be promoted. The efficient and reasonable utilization of data resources can be realized.
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Key words:
- coal mine power grid /
- digital twin /
- digital twin model /
- physical entity /
- 5G
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图 1 煤矿电网数字孪生体系基本架构
Figure 1. Basic architecture of digital twin system of coal mine power grid
图 2 煤矿电网数字孪生体系的运行模式
Figure 2. Operation mode of digital twin system of coal mine power grid
图 3 煤矿井下电气设备状态评估流程
Figure 3. Condition assessment flow of electrical equipment in underground coal mine
图 4 煤矿电网故障定位和保护流程
Figure 4. Fault location and protection flow of coal mine power grid
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