基于EPON通信的智能配电网馈线差动保护

发布时间：2018-06-12 23:59

本文选题：智能配电网 + 差动保护　；参考：《电力系统自动化》2014年02期

【摘要】：智能配电网正朝着网格化、多电源的拓扑结构发展,传统配电网保护、馈线自动化(FA)已经越来越难以满足智能配电网自愈的要求。电流差动保护由于其优越的速动性、灵敏性和选择性而广泛地应用于输电线路,现有的方法是采用专用光纤通道或者基于同步数字系列/准同步数字系列(SDH/PDH)技术的复用通道来实现,但架设这些通信设备费用高且通信速率慢。文中提出并研制了一种适用于智能配电网的差动保护的装置,该装置基于以太无源光网络(EPON)来实现差动保护装置之间采样数据的传输,配以抗延时抖动及IEEE 1588同步算法,实现多端线路差动保护。测试表明,保护能够准确动作,满足精度和动作时间的要求。该装置已在某10 kV线路挂网运行。
[Abstract]:The smart distribution network is moving towards gridding, the topology structure of multi-source is developing, the traditional distribution network protection and feeder automation (FAA) have become more and more difficult to meet the demand of smart distribution network self-healing. Current differential protection is widely used in transmission lines due to its superior rapidity, sensitivity and selectivity. The existing methods are realized by using special optical fiber channel or multiplexing channel based on synchronous digital series / quasi synchronous digital series SDH / PDH technology, but these communication equipments are expensive and slow to set up. In this paper, a differential protection device for smart distribution network is proposed and developed. The device is based on Ethernet passive optical network (EPON) to realize the transmission of sampled data between the differential protection devices, coupled with anti-delay jitter and IEEE 1588 synchronization algorithm. Multi-terminal line differential protection is realized. The test shows that the protection can move accurately and meet the requirements of precision and action time. The device has been used in a 10 kV transmission line.
【作者单位】：南京南瑞继保电气有限公司;
【分类号】：TM773

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