| 引用本文: | 许家焰,武芳瑛,李 瑞,等.智能变电站继电保护二次虚回路失效风险动态识别技术[J].电力系统保护与控制,2025,53(1):160-170.[点击复制] |
| XU Jiayan,WU Fangying,LI Rui,et al.Dynamic identification technology for the failure risk of the secondary virtual circuit of relay protection in an intelligent substation[J].Power System Protection and Control,2025,53(1):160-170[点击复制] |
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| 摘要: |
| 继电保护二次虚回路出现失效风险，会给保护功能造成隐患，影响继电保护系统安全可靠运行。为了解决该问题，提出虚回路失效风险动态识别技术，系统性预警虚回路失效风险，及时发现虚回路故障。首先，通过分析虚回路对象，梳理虚回路显性缺陷和隐性缺陷，构建二次虚回路失效风险预警技术架构。关键技术包含二次回路链路故障识别和二次回路功能故障识别。对于二次回路链路故障识别，通过装置断链告警处理、端口光功率分析、光纤损耗评估等技术监测端口，并通过判据监测异常报文。对于二次回路功能故障识别，监测保护功能有关的跳合闸回路、检修压板状态、虚回路软压板状态。最后，通过智能录波器的技术应用，验证该技术可行、方法正确。该技术为继电保护智能运维在虚回路失效风险方面提供助力，具备很好的实用价值。 |
| 关键词: 智能变电站 继电保护 二次虚回路 失效风险 智能录波器 |
| DOI：10.19783/j.cnki.pspc.240319 |
| 投稿时间：2024-03-20修订日期：2024-05-06 |
| 基金项目:国家重点研发计划项目资助(2021YFB2401000) |
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| Dynamic identification technology for the failure risk of the secondary virtual circuit of relay protection in an intelligent substation |
| XU Jiayan,WU Fangying,LI Rui,HU Botao |
| (Beijing Sifang Engineering Co., Ltd., Beijing 100085, China) |
| Abstract: |
| The failure risk of the secondary virtual circuit of relay protection can cause hidden dangers to the protection function, affecting the safe and reliable operation of a relay protection system. To solve this problem, a dynamic identification technology for the virtual circuit failure risk is proposed, one which systematically gives alert to the virtual circuit failure risk and detects virtual circuit faults in time. First, by analyzing the virtual circuit object, and sorting out the explicit and implicit defects of the virtual circuit, a warning technical architecture of the failure risk is constructed. The key methods include the identification of secondary circuit link as well as functional faults. For the identification of secondary circuit link faults, using such techniques as device breakage alarm processing, port optical power analysis, and fiber loss evaluation, the ports are monitored, and using criteria the abnormal messages are monitored. For the identification of secondary circuit functional faults, protection functions on the tripping and closing circuits, the status of the maintenance plates, and the status of virtual circuit soft plates are monitored. Finally, through the use of an intelligent recorder, the feasibility of the techniques and the correctness of the methods are verified. The technology provides assistance for the intelligent operation and maintenance of relay protection in the failure risk of a virtual circuit, and has good practical value. |
| Key words: intelligent substation relay protection secondary virtual circuit failure risk intelligent recorder |
