摘要
针对电力变压器的检修管理,提出基于风险评估的检修策略。采用风险评估理论,综合考虑变压器故障概率及故障后导致的资产损失、运行损失,评估变压器运行风险。变压器故障概率根据变压器实时状态信息推算得出,资产损失通过变压器资产和资产损失度反映,运行损失通过潮流越限、电压越限、失负荷等多项指标反映;针对变压器运行风险评估结果采用ALARP原则进行风险评级,依据风险等级不同制定不同的检修策略;经算例验证,表明基于风险评估的电力变压器检修策略的有效性。
Aiming at the power transformer maintenance management,we propose maintenance strategy based on risk assessment.We use the risk assessment theory to consider transformer fault probability,the loss of assets and the operating loss,to assess transformer operation risk.We extrapolate the probability of failure of transformer on the basis of the transformer real-time status information.We can get the loss of assets through the transformer assets and degree of loss.We get the operating loss through the over -limited power flow,the over-limited voltage,the loss of load and many other indicators.We use ALARP principle to rate risk assessment results for transformer operation,make different maintenance strategies according to different risk levels.The risk-based assessment of electricity transformer maintenance strategy is effective after verifying some examples.
出处
《中国农村水利水电》
北大核心
2014年第4期159-162,165,共5页
China Rural Water and Hydropower
基金
国家电网公司科技项目(DTZXKJ[2012]586)
关键词
变压器
资产损失
运行损失
风险评级
检修策略
transformer
loss of assets
operating loss
risk ratings
maintenance strategy
