| 引用本文: | 李文俊,程志伟,薛忠新,孟海强.基于光纤通信的防越级跳闸方案设计和应用[J].电力系统保护与控制,2015,43(21):131-135.[点击复制] |
| LI Wenjun,CHENG Zhiwei,XUE Zhongxin,MENG Haiqiang.Design and application on preventing override trip system based on fiber-optic communication[J].Power System Protection and Control,2015,43(21):131-135[点击复制] |
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| 摘要: |
| 为了防止煤矿电网越级跳闸，在传统矿用微机保护的基础上，设计出一种基于光纤通信的矿井电网防越级跳闸保护系统。该系统依靠发送光纤闭锁信号，闭锁上级线路速断跳闸，实现防越级跳闸。在发生速断故障时，保护装置利用光纤通道，能对其上级线路快速发送跳闸闭锁信号，并实现上级线路保护动作时间阶梯化，防止越级跳闸。系统测试表明，该方案能够有效防止上级线路越级跳闸，提高了煤矿电网运行的安全性和稳定性，并证明了该方案的正确性和有效性。 |
| 关键词: 矿井电网 光纤通信 越级跳闸 继电保护 速断保护 |
| DOI：10.7667/j.issn.1674-3415.2015.21.021 |
| 投稿时间：2015-01-23修订日期：2015-04-02 |
| 基金项目: |
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| Design and application on preventing override trip system based on fiber-optic communication |
| LI Wenjun,CHENG Zhiwei,XUE Zhongxin,MENG Haiqiang |
| (Zhangjiamao Mining Co., Ltd., Shaanxi Coal and Chemical Industry Group Co., Ltd., Yulin 719300, China) |
| Abstract: |
| To prevent the override trip of mine electric power network, a scheme of preventing override trip system based on fiber-optic communication is proposed. The system depends on sending fiber block signals, and blocks superior line quick-break trip to achieve anti override trip. When the quick-break fault occurs, relays send blocking signals by using optical fiber to the upstream ones, and the time of quick-break protection will be changed automatically, to prevent the override trip. System test shows that, this scheme can effectively prevent the override trip and improve the operation of mine electric power network security and stability. And the correctness and effectiveness of the proposed scheme is proved. |
| Key words: coal mine electric network fiber-optic communication override trip relay protection quick-break protection |
