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相关概念视频

BIBO stability of continuous and discrete -time systems01:24

BIBO stability of continuous and discrete -time systems

368
System stability is a fundamental concept in signal processing, often assessed using convolution. For a system to be considered bounded-input bounded-output (BIBO) stable, any bounded input signal must produce a bounded output signal. A bounded input signal is one where the modulus does not exceed a certain constant at any point in time.
To determine the BIBO stability, the convolution integral is utilized when a bounded continuous-time input is applied to a Linear Time-Invariant (LTI) system....
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Multimachine Stability01:25

Multimachine Stability

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Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
150
Linear time-invariant Systems01:23

Linear time-invariant Systems

226
A system is linear if it displays the characteristics of homogeneity and additivity, together termed the superposition property. This principle is fundamental in all linear systems. Linear time-invariant (LTI) systems include systems with linear elements and constant parameters.
The input-output behavior of an LTI system can be fully defined by its response to an impulsive excitation at its input. Once this impulse response is known, the system's reaction to any other input can be...
226
Differential Relays01:20

Differential Relays

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Differential relays are used to protect generators, buses, and transformers by comparing electrical quantities at different points. When a fault occurs, the difference in current between the two points triggers the relay to operate, opening the circuit breaker. Under normal conditions, the current entering (i1) and leaving (i2) a generator are equal. When a fault occurs, however, these currents become unequal, and the difference current flows in the relay operating coil, causing the relay to...
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Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

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The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
178
Simplified Synchronous Machine Model01:30

Simplified Synchronous Machine Model

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The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
In this model, each generator is connected to a...
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相关实验视频

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一种事件触发的同步策略,用于具有切换拓的高精度时钟系统.

Hui Zhao1, Xuewu Dai2, Yuan Zhao3

  • 1School of Artificial Intelligence, Shenyang University of Technology, Shenyang, 110870, China.

Heliyon
|September 16, 2024
PubMed
概括

本研究介绍了无线传感器网络 (WSN) 中高精度时钟系统的事件触发同步策略. 该方法确保了可靠的时钟同步,并减少了通信负载,即使在变化拓的网络中也是如此.

关键词:
时钟同步时间的同步.时钟系统 时钟系统事件触发的事件触发.切换拓学的切换.

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科学领域:

  • 计算机科学 计算机科学
  • 电气工程 电气工程
  • 网络工程 网络工程

背景情况:

  • 时钟同步对于无线传感器网络 (WSN) 的可靠性至关重要.
  • 在WSN中的高精度时钟系统面临着切换拓和通信负担的挑战.
  • 现有的方法可能无法有效处理动态网络变化和精确时间要求.

研究的目的:

  • 为WSN中具有切换拓的高精度时钟系统提出事件触发同步策略.
  • 为了减少与时钟同步相关的通信负担.
  • 通过解决时钟偏移和斜率来实现可靠的时钟同步.

主要方法:

  • 研究了基于偏移和偏斜概念的时钟系统模型.
  • 开发了一种针对高精度时钟系统和切换拓学的事件触发策略.
  • 提出了一项同步策略,确保时钟偏移和斜率的趋同.
  • 制定了时钟同步作为一个优化问题,以确定最佳的权重矩阵和控制器收益.

主要成果:

  • 获得了足够的条件,用于高精度时钟系统与交换拓的同步.
  • 通过拟议的策略证明了时钟偏移和斜率的趋同.
  • 通过优化成功计算了最佳事件触发权重矩阵和控制器收益.
  • 通过模拟验证了拟议的时钟同步方法的性能.

结论:

  • 拟议的事件触发同步策略有效地实现了WSN中的时钟同步,使用高精度时钟系统和切换拓.
  • 与传统方法相比,这种方法提供了较低的沟通负担.
  • 这些发现提供了一个强大的解决方案,通过精确的时钟同步来提高WSN的可靠性.