一个基于分割的代学习方案的分布式故障估计,用于交换互连的非线性系统
概括
一个新的细分代学习方案 (SILS) 改善了分布式故障估计 (DFE) 对于具有延迟和干扰的非线性系统. 这种方法提高了准确性,并降低了干扰的灵敏度,以确保可靠的系统监控.
科学领域:
- 控制系统工程 控制系统工程
- 非线性系统分析 非线性系统分析
- 错误诊断 错误诊断 错误诊断 是一个
背景情况:
- 交换互连的非线性系统 (SINS) 在故障估计方面存在挑战,原因是时间延迟和外部干扰.
- 准确的故障估计对于复杂互连网络中的系统可靠性和安全性至关重要.
研究的目的:
- 为SINS提出一种新的分布式故障估计 (DFE) 方法,包括时间延迟和外部干扰.
- 使用细分代学习方案 (SILS) 提高故障估计的准确性和稳定性.
主要方法:
- 开发一个分布式代学习观察器,利用子系统间的信息来提高故障估计的准确性.
- 构建基于SILS的故障估计定律,结合细分设计和可变增强方法,以快速跟踪和降低干扰灵敏度.
- 拟议的故障估计方法的融合分析和观察者和代学习增益矩阵的确定.
主要成果:
- 拟议的DFE方法有效地估计了SINS中的故障,尽管时间延迟和外部干扰.
- 基于SILS的法律证明了增强的故障信息跟踪和减少对干扰的敏感性.
- 模拟结果验证了开发的故障估计方法的优越性和可行性.
结论:
- 基于SILS的新型DFE方法为复杂SINS中的故障估计提供了强大而准确的解决方案.
- 该方法能够处理时间延迟和干扰,使其适合于现实世界的应用.
- 开发的技术在相互连接的非线性系统中提升了故障诊断能力.
相关概念视频
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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:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
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01:24Bus Impedance Matrix
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Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
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01:21Power System Three-Phase Short Circuits
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01:26Linear Approximation in Frequency Domain
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01:18Fault Types
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When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
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01:26Feedback control systems
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