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双语推荐：光纤网

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在国家三网融合的进程中,通过对光纤到户工程的实施、对各运营商操作,及对现实楼内光纤综合布线施工方案进行分析,据此提出科学合理的光纤到户在城市建设综合光纤布线策略.
This paper is to discuss the operation of the companies concerned in the process of the national Triple Play as well as the integrated wiring strategy of optical fibers in buildings.

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针对并联运行三相逆变器模块分布式控制问题,提出采用高速切换式光纤环网搭建分布式控制网络,每一个逆变器模块作为环网中的一个节点。结合具体的环网通信协议,计算切换式光纤环网一个开关周期内完成数据通信的时间,得出切换式光纤环网的应用范围。为了实现并联运行逆变器模块电流均衡并避免产生环流,采用环网中各节点精确同步的控制策略,使各个子节点产生相同的开关驱动脉冲。提出3种应用于切换式环网的节点同步方法,通过分析3种同步方法的时间延迟和同步精度,得出适合并联运行三相逆变器模块的双光纤环网拓扑结构。该结构简单可靠、同步精度高。搭建了切换式光纤环网实验平台,验证了切换式光纤环网通信时间计算方法和节点同步方法分析的正确性。
Solution of adopting the switchable fiber ring net to implement the distributed control of two parallel operating three phase inverters is proposed,with each inverter module as a slave node in the fiber ring net.According to the protocol,the communication time in one switching cycle is calculated and the application range that can use the switchable fiber ring net is obtained.To implement equal current sharing between parallel operating three phase inverters and avoid the circulating path, precise synchronization strategy is used in the switchable fiber ring net and every slave node generates the same drive signal. Three synchronization methods for the switchable fiber ring net are proposed.With time delay and synchronization accuracy compared between the three methods,a dual fiber ring net suitable for two parallel operating three phase inverters is obtained, which is simple,reliable and accurate.An experimental bed for testing the switchable fiber ring net and its synchronization met

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本研究以光纤通信技术的简介作为开篇，对光纤通信技术的优势展开了研讨，提供了光纤通信技术电力系统应用中的光缆、光缆内光纤、光纤组网等方面的技术和应用要点。
This study begun with the introduction of optical fiber communication technology, discussing the advantages of optical fiber communication technology, providing the techno-logy of the aspects of optical cable, optical fiber in optical cab-le, optical fiber network, the and key points of application of optical fiber communication technology in the power system.

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论证了中心城区建设智能配电网的可行性，并以中心城区用户确通信光纤入户实施方案为切入点，提出了光纤到楼和光纤到户的组网接入方案，并进一步结合中心城区的特点，给出了典型供电区中商贸区、住宅区以及工业区的光纤入户建设改造万案。
The feasibility of the smart distribution automa-tion in the city centre is demonstrated,and the networking solutions of FFTB and FFTH are proposed with the customer premises FF-TH scheme as a point of penetration. On this basis, combined with the characteristics of the city centre, reconstruction programmes of FTTH in typical power supply districts such as commercial areas, residential areas, industrial areas are proposed and demonstrated to have echnical guidance value.

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通过传输损耗、上行噪声叠加、传输时延和组网等方面来比较模拟光纤直放站和数字光纤直放站的优缺点,试验利用数字光纤直放站在既有包西线GSM-R系统中替代模拟光纤直放站进行弱场覆盖,发现数字光纤直放站近、远端机之间的光纤传输链路不受光功率衰减的影响,并能通过调整远端机时延可以良好解决实际应用中多个远端单元RRU之间重叠覆盖区域的时延色散问题,对数字光纤直放站今后在铁路推广应用具有参考价值。
Through comparison on advantages and disadvantages between the analogue and digital optic-fiber repeaters in the aspects of the transmission loss, uplink noise overlapping, transmission delay and networking, the experiment was carried out in which the digital optic-fiber repeater was employed to replace the analogue optic-fiber repeater on the existing Baotou-Xi’an Railway GSM-R system so as to reach the coverage in weak-field area. The experiment shows that the optic transmission link between the MHU and RRU will not be influenced by the attenuation of the optic power, and shows that the problem of delay dispersion in overlapping coverage area among several RRUs can effectively be solved through adjusting the delay of the RRU. This thesis also presents constructive suggestions on the application of the digital optic-fiber repeater in railway.

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本文简述了锦屏水电站施工通信光纤网在运行维护过程中遇到的由于光纤衰耗过大导致业务无法正常传输这一难题，通过对光时域反射计测得的数据进行对比分析，找出问题根源，并采取光纤直熔等措施降低各光纤接头衰耗，从而有效地解决了业务无法传输的问题。
This article introduces the transmission problem of the optic fiber communication network in Jinping hydropower station during the operation and maintenance,and then finds out the source reason of the problem by comparative analysis of the data obtained from the optical-time domain reflectometer.Finally the transmission problem is solved using the method of optic fiber direct melting to reduce the connector attenuation.

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针对现有保护系统无法可靠实现煤矿井下高压电网短路保护的选择性，提出了一种由实时以太网Ether CAT与光纤联锁相互配合的井下短路保护方案。系统主要由双层实时以太网Ether CAT、光纤联锁网、具有Ether CAT通讯接口和联锁接口的综合保护装置等构成。实时以太网Ether CAT与光纤联锁网协同工作并互为后备，当Ether CAT或光纤联锁网通讯因故障中断时，后备网络独立实现系统功能。试验表明，系统可靠实现了井下短路保护的选择性，并能够迅速确定故障点位置，缩短故障排查时间，提高了供电网的安全性与可靠性。
Short circuit protection of high-voltage power grid in coal mine cannot realize selectivity by existing protection sys-tems. To solve the problem, a scheme based on real-time Ethernet Ether CAT and optical fiber interlock network was proposed. The system is mainly composed of double real-time Ethernet Ether CAT, optical fiber interlock network and integrated protec-tion device with Ether CAT communication interface and interlock interface. Real time Ethernet Ether CAT and optical fiber in-terlock network cooperate with each other, when one is interrupted by the failure, the other network can complete the work of system independently. Experiments show that the system can achieve short circuit protection selectivity reliably, determine the position of fault quickly, shorten troubleshooting time and improve safety and reliability of power grid system.

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光纤(布喇格)光栅是一种重要的光纤光学器件,在光纤通信、传感等领域被大量应用。在现阶段,光纤光栅几乎全部是在光纤静止的状态制备,再将光栅焊接组成光纤光栅阵列或网络。这种制备光栅并焊接形成光纤光栅网络的方式,效率低、光栅抗拉强度低,不能满足物联网建设的需求。解决这个问题的途径是发展拉丝塔上在线制备光栅技术。介绍了光纤光栅制备技术的发展历史以及在光纤拉丝塔上在线制备光栅的研究现状。采用相位掩模法在拉丝塔上在线连续制备光栅,可以制备光栅中心波长一致性、反射率一致性和光栅谱型一致性均较好的弱光栅阵列,可以用于研制基于全同弱光栅的光纤光栅传感网。
Optical fiber Bragg grating (FBG)is a kind of important optical device widely used in optical commu-nication and sensing.At present,almost all the FBGs are produced when the optical fibers are in a stationary state,then spliced to form a FBG array or network.Because of the low preparation efficiency and the low ten-sile strength of the FBGs,it can not meet the requirements for constraction of sensor networks.The way to solve this problem was the development of FBG online preparation technology on a fiber drawing tower.In this review,the development history of FBG preparation technology and the research status of FBG online prepara-tion technology were introduced.Identical weak FBG arrays could be prepared on a fiber drawing tower by using the phase mask technique,and the identical weak FBGs are of good central wavelength consistency,good reflectivity consistency and minor spectral distortion,which was very promising to be applied to constract sen-sor networks.

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近年来，我国大力构建现代化电力系统，切实改善我国的国计民生，尤其是光纤通信技术的不断发展，在很大程度上促进了电力系统的发展。首先基于光纤特点、优越性等，阐述了光纤通信技术。随后从电力特种光缆、光纤的分类及选型、光纤传输组网技术等方面，论述了光纤通信技术在电力系统的应用。旨在强化光纤通信技术的认识，及光纤通信技术在电力系统中的应用，并为今后相关领域的研究提供一定参考资料。
In recent years, China vigorously constructs modern electric power system, realistically, improves the national economy and the people''s livelihood. And in particular, the development of optical fiber communication technology greatly promotes the development of electric power system. This paper based on fiber characteristics and advantages, treats of the optical fiber communication technology, and then from the classification and technical selection of electric power special optical cable, optical fiber, optical fiber transmission networking technologies discusses the application of optical fiber communication technology in electric power system. This paper aims to enhance the understanding of optical fiber communication technology, including the application of optical fiber communication technology in electric power system, thus provide a reference for the future research in related fields.

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本文结合光纤到户国家标准,对住宅区光纤到户的分工界面、网络系统组网、上联设计、设备间与电信间的选择、光缆入户设计、光分光器部署、工程维护等内容进行了阐述,对住宅区光纤到户如何实现平等接入,保障用户自由选择的权利等关键内容进行了详细描述和探讨。
Based on the national standard on FTTH, this article describes the residential division of FTTH interface, network system design, the choice of equip-ment and telecommunications rooms, household de-sign, optical splitter deployment, and fiber optic cable engineering maintenance, etc. Then it discusses in de-tails the realization of the equal access for FTTH to guarantee the rights of users.

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