摘要
日趋成熟的在线监测技术大幅提升了设备状态的观测频率。在此背景下,需要更加灵活的电网状态检修决策模型以适应高频率、可观测的设备状态变化。目前已有的电网状态检修决策模型主要优化是基于当前设备状态的系统级检修计划,并没有考虑对规划时间内新增状态信息的应对策略。这样无法利用可获得的规划时间内的状态信息,导致检修计划效能受限。因此,提出一种设备在线监测下电网状态检修的决策模型。具体实现方式是在已有模型中加入检修门槛,一旦设备状态在检修计划前越过该门槛,则将原计划提前执行以防止发生故障。同时将检修门槛应用于非待修设备,以应对可能发生的非待修/待修类别转换,由此形成完整的电网状态检修策略。进一步建立优化模型,以电网运行总风险为目标联合优化检修计划和检修门槛。最后通过算例分析表明该方法是可行有效的,对电网设备状态检修具有一定的工程价值。
The maturing on-line monitoring technology greatly improves the observation frequency of equipment state.In this context,a more flexible decision-making model of condition-based maintenance for the power grid is needed to adapt to the high frequent and observable state changes of equipment.At present,the existing decision-making models of condition-based maintenance optimize the system level maintenance plan mostly based on the current equipment state,where the response strategy to the new state information within the planning period is not considered.In this way,it is impossible to use the available state information in the planning period,which results in the limitation of maintenance scheduling efficiency.Therefore,this paper proposes a decision-making model of condition-based maintenance for the power grid with equipment on-line monitoring.The specific implementation method is to add the maintenance threshold to the existing model.Once the equipment state exceeds the threshold before the maintenance plan,the original plan will be executed ahead of schedule to prevent failure.Meanwhile,the maintenance threshold is applied to the non-maintenance equipment to cope with the possible non-maintenance/maintenance category conversion.Thus,a complete condition-based maintenance strategy for the power grid is formed.The optimization model is further established to jointly optimize the maintenance schedule and maintenance threshold which takes the total risk of power grid operation as the goal.Finally,the example analysis shows that the method is feasible and effective,and has certain engineering value for condition-based maintenance of power grid equipment.
作者
许易经
韩学山
杨明
朱星旭
徐波
XU Yijing;HAN Xueshan;YANG Ming;ZHU Xingxu;XU Bo(Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education(Shandong University),Jinan 250061,China;State Grid Energy Research Institute Co.,Ltd.,Beijing 102209,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2020年第23期72-81,共10页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51077087,51477091)。
关键词
在线状态监测技术
状态检修
检修门槛
设备运行风险
电网运行风险
on-line state monitoring technology
condition-based maintenance
maintenance threshold
operation risk of equipment
operation risk of power grid
