适用于远距离通信的城市轨道交通区间跟随所干式变压器本体智能终端开发的关键技术
招康杰1赖沛鑫1麦华仁2余龙1谢金莲1王文浩1
Intelligent Terminal Development Key Technologies for Dry\|Type Transformer Body at Urban Rail Transit Interval Following Station Adapt to Long\|Distance Communication
ZHAO KangjieLAI PeixinMAI HuarenYU LongXIE JinlianWANG Wenhao
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作者信息:1.广州白云电器设备股份有限公司，510450，广州
2.广州市扬新技术研究有限责任公司，510540，广州
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Affiliation:Guangzhou Baiyun Electric Equipment Co., Ltd., 510450, Guangzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.11.035
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中图分类号/CLCN:U231.7
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栏目/Col:应用技术
摘要:
目的：传统干式变压器温度控制器信号传输采用干接点方式，存在干扰严重、造价成本高、施工复杂及需增设电源供电等缺点，可靠性和安全性较差，难以满足远距离信号传输的需求，需要对适用于远距离通信的干式变压器本体智能终端（以下简称“智能终端”）进行研究。方法：列举了适用于长大区间（站间距大于4 km）通信干式变压器的3个技术方案，分别为方案一（传统“硬接线+中间继电器”）、方案二（硬接点转光信号传输）及方案三（基于IEC 61850系列标准的光纤通信），并对这3个方案进行了技术对比。在此基础上进一步分析了实施方案三所需的软硬件要求，以及方案三的组网方式及数据流向，介绍了基于方案三的智能终端开发的关键技术。最后以我国某城市轨道交通线路为例，对方案三的工程应用进行了验证。结果及结论：基于长大区间城市轨道交通线路的远距离信号传输要求，应优先选择方案三。由案例线路的测试结果可知：基于方案三的智能终端不仅能有效传输信号，满足供电系统安全运行要求，节省建设成本，还能显著提升干式变压器的智能化水平。光纤传输具有延时小、造价低、传输节点少和不受电磁干扰等优势，将成为未来城市轨道交通信号传输的主流模式。
Abstracts:
Objective: The signal transmission of temperature controller for conventional dry\|type transformers using dry contacts suffers from severe interference, high cost, complex installation, and the need for additional power supply. The reliability and safety are compromised, making it difficult to meet the requirements of long\|distance signal transmission. To address this, the research focuses on intelligent terminals of dry\|type transformer for long\|distance communication (abbreviated as intelligent terminal). Method: Three technical solutions suitable for long\|distance communication (inter\|station distance greater than 4 km) dry\|type transformers are proposed, including Solution 1 (traditional ′hard wiring+intermediate relay′), Solution 2 (hard contact to optical signal transmission), and Solution 3 (optical fiber communication based on IEC 61850). A technical comparison of these three solutions is provided. Based on this analysis, the hardware and software requirements for Solution 3, as well as the networking and data flow, are further discussed. The key technologies for the development of intelligent terminal based on Solution 3 are also introduced. Finally, an engineering application of Solution 3 is demonstrated using a city′s rail transit line in China as an example. Result &Conclusion: Considering the requirements of long\|distance signal transmission on the long\|haul interval urban rail transit lines, Solution 3 should be prioritized. The test results from the example line show that intelligent terminal based on Solution 3 can effectively transmit signals and meet the safety requirements of power supply systems, while saving construction costs and significantly improving the intelligence level of dry\|type transformers. The advantages of fiber optic transmission, such as low latency, low cost, fewer transmission nodes, and immunity to electromagnetic interference, make it the mainstream mode of signal transmission in future urban rail transit systems.
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