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首页> 外文期刊>Power Systems, IEEE Transactions on >An Analytic Model for Fault Diagnosis in Power Systems Utilizing Redundancy and Temporal Information of Alarm Messages
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An Analytic Model for Fault Diagnosis in Power Systems Utilizing Redundancy and Temporal Information of Alarm Messages

机译：利用报警消息的冗余和时间信息的电力系统故障诊断分析模型

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摘要

In modern transmission systems, duplicated protections are widely employed to enhance reliability, and global positioning system (GPS) substation clocks are set up to deliver a higher degree of synchronization. Thus, redundant alarms tagged with synchronized timestamps would be received during a fault. Both redundancy and timestamps of alarms consist of rich and useful information. Given this background, an effort is made to develop a novel analytic model for power system fault diagnosis so as to well utilize redundancy and temporal information of alarms. An alarm preprocessing procedure is proposed to preserve such properties without impairing diagnosis accuracy and efficiency. A new fault hypothesis is established to systematically take account of malfunctions of protective devices, missing and distorted alarm messages, and timestamp errors in the proposed model. An objective function is developed for fault diagnosis, and could accommodate various protection schemes and bus configurations. Based on the presented fault diagnosis method, a software package is developed. Several fault scenarios occurred in an actual power system in China are served for demonstrating the correctness and efficiency of the developed software package.
机译：在现代传输系统中，广泛采用了双重保护来增强可靠性，并且设置了全球定位系统（GPS）变电站时钟以提供更高的同步度。因此，在故障期间将接收带有同步时间戳标记的冗余警报。警报的冗余和时间戳都包含丰富而有用的信息。在这种背景下，人们努力开发一种用于电力系统故障诊断的新颖分析模型，以便充分利用警报的冗余和时间信息。提出了一种警报预处理程序来保留这些属性，而不会损害诊断的准确性和效率。建立了新的故障假设，以系统地考虑所提出模型中的保护装置故障，警报消息丢失和失真以及时间戳错误。开发了用于故障诊断的目标功能，可以适应各种保护方案和总线配置。基于提出的故障诊断方法，开发了软件包。在中国的实际电力系统中发生的几种故障情况可用来证明所开发软件包的正确性和效率。

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