基于设备运行状态的优化检修计划在廊坊供电公司的应用研究

发布时间：2018-11-23 15:39

【摘要】：变电设备在电力系统中承担着电力的控制和分配等重要任务,其安全运行非常重要。如何避免意外停电的发生,最大限度的缩短停电时间,减少设备的维护费用,延长设备的使用寿命,实现设备使用的最优化,已成为电力行业当前的重要课题,蕴含着巨大的经济效益和社会效益。考虑到设备的检修作业通常包括检测、评估、决策、维修四个过程,因此,本文从状态监测技术、状态评价模型、状态检修决策三个角度对变电设备的状态检修进行了分析研究。首先,对设备状态检修的基础理论进行了研究,设备的状态检修策略包括状态监测、状态评价、检修决策三个环节。状态监测技术主要包括巡检,停电试验和在线监测等手段。对状态评价流程进行了分析,得出设备的状态评价遵从从小到大、从局部到整体的评价过程,并对评价结果进行了等级划分。对检修决策的制定进行了研究,主要包括检修类别、检修周期、检修方案三个方面。其次,从理论分析的角度对变压器的优化检修策略进行了研究,根据国家电网公司输变电设备状态评价手册要求,分别对主状态量和辅助状态量设定了具体的扣分值,对定量状态量和定性状态量的扣分规则进行了研究,提出了基于评分法的变压器状态评价模型。在检修周期的确定方面,提出从最大可用度的角度对变压器的检修周期进行研究,并对其计算过程进行了说明。在优化检修计划的制定原则方面,同时参考状态评价结果和基准检修周期,对处于不同状态的变压器制定不同的检修方案。最后,对变压器优化状态检修计划在廊坊供电公司的应用进行了分析,根据状态评价结果得知,该变压器处于严重异常状态,需要立即采集维修措施,经过检修,发现和评价结果一致,有效的验证了本文所提方法的有效性。
[Abstract]:Substation equipment plays an important role in power system control and distribution, and its safe operation is very important. How to avoid accidental power outages, shorten blackout time, reduce maintenance costs, prolong the service life of equipment and realize the optimization of equipment use has become an important topic in the electric power industry. It contains enormous economic and social benefits. Considering that the maintenance operation of equipment usually includes four processes: detection, evaluation, decision and maintenance, therefore, this paper starts with the condition monitoring technology, the condition evaluation model, The condition maintenance of substation equipment is analyzed and studied from three angles of condition maintenance decision. Firstly, the basic theory of equipment condition-based maintenance is studied. The strategy of equipment condition maintenance includes condition monitoring, condition evaluation and maintenance decision. State monitoring technology mainly includes inspection, blackout test and online monitoring and other means. By analyzing the process of state evaluation, it is concluded that the state evaluation of equipment follows the process from small to large, from part to whole, and the evaluation results are classified. This paper studies the decision-making of maintenance, including three aspects: maintenance type, maintenance period and maintenance scheme. Secondly, the optimal maintenance strategy of transformers is studied from the angle of theoretical analysis. According to the requirements of the state evaluation manual of transmission and transformation equipment of State Grid Company, the specific deduction points are set for the principal state quantity and auxiliary state quantity, respectively. In this paper, the deduction rules of quantitative state quantity and qualitative state quantity are studied, and the evaluation model of transformer condition based on scoring method is proposed. In the aspect of determining the maintenance period, this paper puts forward the research on the maintenance period of transformer from the point of view of maximum availability, and explains its calculation process. In the aspect of the principle of optimizing maintenance plan and referring to the result of condition evaluation and the period of reference maintenance different maintenance schemes are made for transformers in different states. Finally, the application of optimal condition maintenance plan of transformer in Langfang Power supply Company is analyzed. According to the result of condition evaluation, the transformer is in a serious abnormal state and needs to collect maintenance measures immediately. The findings are consistent with the evaluation results, which effectively verify the effectiveness of the proposed method.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM732

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