The Improvement in Human Reliability in Power Grids by Identifying and Assessing the Risk of Failures Caused by Maintenance Operations

Human errors in the maintenance operations of power transmission grids can be a critical factor in the failure of equipment. Equipment failures result in the reduction in reliability, customer satisfaction, and loss of power companies revenue. In order to prevent the failure of equipment due to human errors, the supervisors or head of the operating groups needs to monitor the actions continuously during and after the maintenance. The proposed approach in this paper is to estimate the probability of the human errors’ effect in any failure with its technical and economic consequences for power companies. Then, the equipment failures have been categorized based on the risk assessment of the human error and consequences in order to identify high-priority tests or inspections for accuracy for monitoring and controlling.