电气技术  2016, Vol. 17 Issue (1): 81-86    DOI:
技术与应用 |
低压配电系统多层级网络选择性协调保护机制技术
苏尚流1, 缪希仁1, 吴立敏2
1. 福州大学电气工程与自动化学院,福州 350116;
2. 嘉兴供电公司,浙江 嘉兴 314400
Mechanism Technology of Coordinated Selective Protection in a Multi-level Low Voltage Distribution System
Su Shangliu1, Miao Xiren1, Wu Limin2
1. College of Electrical Engineering and Automation Fuzhou University ,Fuzhou 350116;
2. Power Supply Company in Jiaxing, Jiaxing, Zhejiang 314400
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摘要 针对现阶段低压系统短路故障选择性保护的局限性,分析短路故障早期检测及其峰值预测在选择性保护的重要意义,提出低压系统多层级网络全范围选择性协调保护机制技术,阐述实现低压系统多层级网络选择性协调保护的关键点。通过仿真分析,探讨了多层级网络中各个节点与中控CPU的协调保护机制及其可行性,并提出采用高速晶振同步采样和基于光纤信道的高速SPI通信技术解决多层级网络多节点同步采样误差问题和多节点与中控CPU高速通信问题。
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关键词 低压系统多层级选择性保护早期检测同步采样高速通信    
Abstract:Considering the limitations of short-circuit selective protection in low-voltage system, a technology of protective and coordinated mechanism in a multi-level low voltage distribution system is propound ,after analyzing the significance of early detection and peak prediction for short-circuit current in selective protection, key techniques to realize above technology are expound as well. By simulating and analyzing, the specific protection mechanism, in which multi-level network nodes and center control CPU is coordinated, and feasibility are discussed. To solve sampling synchronous error with many nodes in multi-level network and the problem of high speed communication of center control CPU, sampling synchronous using high speed external crystal and SPI communication technology which is based on optical fiber are proposed.
Key wordslow voltage system    selective protection in multi-level network    early detection    sampling synchronous    high speed communication   
     出版日期: 2016-01-13
基金资助:国家自然科学基金资助项目(51377023)
作者简介: 苏尚流(1990-),男,福建省泉州晋江市人。在读硕士研究生,主要研究方向为智能电器及在线监测技术。
引用本文:   
苏尚流, 缪希仁, 吴立敏. 低压配电系统多层级网络选择性协调保护机制技术[J]. 电气技术, 2016, 17(1): 81-86. Su Shangliu, Miao Xiren, Wu Limin. Mechanism Technology of Coordinated Selective Protection in a Multi-level Low Voltage Distribution System. Electrical Engineering, 2016, 17(1): 81-86.
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