高压感应定子绕组可靠性评估算法研究

Jeong-Ho Chang, Heung-Ho Lee
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引用次数: 4

摘要

目前,高压感应电动机在包括水电厂在内的许多领域得到了广泛的应用,发挥着重要的作用。虽然可靠,但众所周知,电力设备有几个维护问题。这些设备问题往往导致每个会计年度的维护成本过高,这要么源于传统的基于时间的维护计划,要么源于设备维修/更换的不科学资产管理。为了减轻设备更换的经济负担,无论是通过准确预测高压感应电机的故障率,还是通过对高压感应电机的标准化诊断,都必须建立一套完善的功率电机可靠性评估方法。本文的目的是建立一种标准的高压感应电动机定子绕组状态评估算法。本研究采用了几种技术测试,包括交流电流(ΔI)、耗散系数(tanô)、局部放电(PD)幅度和极化指数(pi)的测量。交流电流测试提供了水泵电机运行时定子绕组绝缘强度的附加信息。提出的基于风险维护方法的可靠性评估算法对可靠性评估有重要贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A study on reliability based assessment algorithm for high voltage induction stator windmgs
Currently high voltage induction motors are widely used and play a significant role in many fields including water power plants. Though reliable, the power equipment has been known to have several maintenance problems. These equipment problems often result in an excessive maintenance cost per fiscal year, which has been derived either from a traditional time-based maintenance schedule or a non-scientific asset management of equipment repair/replacement. In order to reduce the financial burden of equipment replacement, it is imperative to develop a sound evaluation method of the reliability of the power motors either by accurately predicting the rate of fault occurrence or by standardizing the diagnosis of the high voltage induction motors. The purpose of this paper was to develop a standard evaluation algorithm for the condition of the stator windings of high voltage induction motors. Several technical tests were utilized in this study including the measurements of AC current (ΔI), dissipation factor (tanô), partial discharge (PD) magnitude, and polarization index (P.I.). The AC current test produced additional information on the insulation strength of the stator winding of water supply pump motor in operation. The suggested algorithm based on the Risk-Based Maintenance method could make a significant contribution to the reliability assessment.
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