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相关概念视频

Distribution Reliability and Automation01:25

Distribution Reliability and Automation

690
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
690
Pilot and Numeric Relaying01:21

Pilot and Numeric Relaying

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Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
589
Load-frequency control01:28

Load-frequency control

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Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
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相关实验视频

Updated: May 6, 2026

Quasi-light Storage for Optical Data Packets
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一个高容量的光学地铁接入网络:通过强大的切换和集中式光线终端,高效地恢复光纤故障.

Rahat Ullah1,2,3, Sibghat Ullah4, Ahmad Almadhor5

  • 1Institute of Optics and Electronics, Nanjing University of Information Science & Technology, Nanjing 210044, China.

Sensors (Basel, Switzerland)
|February 24, 2024
PubMed
概括

一个用于光学地铁接入网络 (OMAN) 的新型中央办公室 (CO) 使用独特的光学多载波 (OMC) 技术进行高速,可靠的数据传输. 该系统有效地处理多个用户,并从光纤故障中快速恢复.

关键词:
这是光学通信.光学地铁接入网络的光学地铁接入网络光学多载载体生成系统光学环网络网络的光学环网络波长划分多重复合 波长划分多重复合

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相关实验视频

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科学领域:

  • 光学网络的光学网络.
  • 电信工程 电信工程 电信工程

背景情况:

  • 光学地铁接入网络 (OMAN) 面临着高数据速率和光纤故障的挑战.
  • 现有的中央办公室 (CO) 系统需要提高负担能力和可靠性.

研究的目的:

  • 为OMAN提出一个新的CO,具有价格实惠和独特的开关系统.
  • 引入一种新的光学多载波 (OMC) 生成技术,以提高网络性能.
  • 解决光纤故障问题,确保不间断的通信.

主要方法:

  • 开发了一种新的OMC生成技术,使用级联相和没有放大器或过器的Mach Zehnder调制器.
  • 将OMC集成到OMAN的CO架构中.
  • 实施了强大的开关系统,并集中的OLT用于故障恢复.

主要成果:

  • 通过OMC技术实现了40dB的高音频与噪声比 (TNR) 和最小的振幅偏移.
  • 支持1.2 Tbps下行链路和600 Gbps上行链路传输速率.
  • 已证明的实际比特错误率 (BER) 从10^-3到10^-13 (下行链接) 和10^-6到10^-14 (上行链接).
  • 在各种光纤故障场景中展示了快速传输故障恢复.

结论:

  • 拟议的CO与OMC发电为OMAN提供了一种可靠和负担得起的解决方案.
  • 该系统有效地容纳多个用户,并保持高质量的传输速率.
  • 实施的故障恢复机制确保了不间断的通信服务.