变压器在线监测装置配置优先级评估模型

Priority Assessment Model of On-line Monitoring Device Allocation for Power Transformer

如何合理配置在线监测装置,提高在线监测装置综合经济效益,是电力行业关注的新问题。针对这一问题,提出了一种变压器在线监测装置配置优先级综合评估模型。该评估模型包含设备层和系统层,设备层可分为设备属性评估和运行状态评估。其次,对各评估方法进行了描述,包括基于模糊层次分析法的变压器设备属性评估方法,基于状态评估技术的运行状态评估方法以及基于风险收益指标的系统层评估方法。最后,以实际电网算例对所提模型进行了验证,仿真计算结果证明所提评估模型能够对不同变压器在线监测装置的配置优先级进行较为合理的排序,并且综合考虑多方面因素,评估结果更具全面性。

An appropriate way to improve comprehensive benefits of on-line monitoring devices is a new issue in power industry. A priority assessment model of on-line monitoring device allocation for transformer was proposed. The assessment model consisted of device level and system level. The device level was divided into property assessment and operation condition assessment. Details of various assessment methods were described, including device property assessment based on fuzzy analytic hierarchy process（FAHP）, operation condition assessment method based on condition assessment technology and system level assessment method based on risk benefit index. An actual grid was utilized to validate the model and its numerical results verified that the proposed assessment model could provide an appropriate on-line monitoring allocation order for transformers and considering multiple aspects related to this problem could give a more comprehensive assessment result than just considering one or two of them. The research in this paper could provide a feasible reference for on-line monitoring device allocation in power industry.