With the continuous development of power grid, new materials, new technology, continuous application of new equipment, the traditional transport inspection means to inspect and test the operation of power has been unable to fully evaluate the health status of the equipment, especiallyf or large equipment, latent defects closed type equipment is not easy to find. In order to ensure the safe operation of equipment the power grid, the State Grid Corporation to promote the state detection technology to live detection and on-line monitoring of key detection equipment abnormal sound, light, electricity, magnetism, heat and other parameters, using comprehensive analysis method, accurate diagnosis equipment "sick" . It is of great significance to develop the power network equipment condition detection technology in the aspects of detecting hidden trouble ahead of time, reducing the forced stop times of equipment caused by fixed inspection and test, reducing the maintenance cost and prolonging the service time of electrical equipment.%随着电网的不断发展,新材料、新工艺、新设备不断应用,以运维巡视和停电试验为主的传统运检手段已不能全面评估设备的健康状况,尤其对大型设备、全封闭型设备的潜伏性缺陷,更不易提前发现.为确保电网设备安全运行,国网公司大力推广以带电检测和在线监测为主的状态检测技术,重点检测设备异常时"声、光、电、磁、热"等参数,运用综合分析手段,准确诊断设备"病患".积极开展电网设备状态检测技术,在超前发现设备隐患、减少因定检和例试造成的设备迫停次数、降低维修成本、延长电气设备的服役时间等方面具有重要意义.
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