| 引用本文: | 赵洪山,李宇昊.基于比例强度模型的变压器不完全检修策略[J].电力自动化设备,2021,41(6): |
| ZHAO Hongshan,LI Yuhao.Imperfect maintenance strategy of transformer based on proportional strength model[J].Electric Power Automation Equipment,2021,41(6): |
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| 摘要: |
| 将不完全检修这一实际问题考虑到变压器状态检修策略中，提出了基于比例强度模型的变压器状态检修策略。首先，建立变压器比例强度模型，给出比例强度模型中不完全检修参数的详细计算模型，并对计算过程中的时间参数和检修参数进行敏感性分析，确定其合理的取值范围，明确不完全检修活动的检修效果；然后，确定变压器状态检修策略，利用最小成本法确定比例强度模型的状态检修阈值曲线，并增设阈值下限值作为状态检修策略的限制性指标；最后，利用实际变压器故障统计数据和状态监测数据进行算例分析，从检修成本、检修次数和检修时间三方面分别分析改进后的比例强度模型在不完全检修情况下的有效性，为变压器的状态检修决策提供可靠的理论依据。 |
| 关键词: 变压器 状态检修 不完全检修 比例强度模型 |
| DOI：10.16081/j.epae.202102009 |
| 分类号:TM411 |
| 基金项目: |
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| Imperfect maintenance strategy of transformer based on proportional strength model |
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ZHAO Hongshan, LI Yuhao
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School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China
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| Abstract: |
| Taking the practical problem of incomplete maintenance into the consideration of transformers’ state maintenance strategy, a state maintenance strategy based on proportional strength model is proposed. Firstly, the proportional strength model of transformer is established, and the detailed calculation model of incomplete maintenance parameters is given. The sensitivity analysis of time parameters and maintenance parameters in the calculation process is carried out to determine the reasonable value range and clarify the maintenance effect of incomplete maintenance activities. Then, the state maintenance strategy of transfor-mer is determined. The minimum cost method is used to determine the state maintenance threshold curve of the proportional strength model, and the lower threshold value is added as a restrictive indicator for the state maintenance strategy. Finally, the actual fault statistics and state monitoring data of transformer are used for example analysis. The effectiveness of the improved proportional strength model in the case of incomplete maintenance is analyzed respectively from three aspects of maintenance cost, maintenance frequency and maintenance time, which provides a reliable theoretical basis for transformer’s state maintenance decision. |
| Key words: electric transformers state maintenance imperfect maintenance proportional strength model |
