Disturbed Equipments

Measuring, Centralized Automatic Total Protection Control Telecom Indicator Superv./Control Process (Ratio) 

Mechanical Analog Digital Unknown Total (Ratio) 

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Identify the causes of process trends, e.g., external load disturbances, equipment faults, operational degradation, operator-induced mishandling. 

The task of the process control engineer then centered on establishing a control strategy to ensure stable dynamic performance and to satisfy product quality requirements. These objectives must be met in the face of potential disturbances, equipment failures, production rate changes, and transitions from one product to another. 

This chapter summarizes the disturbances experienced in Japan, including the disturbed equipment, incoming surge routes, and characteristics of the disturbances [1,10]. Results of these disturbances in power system operations, such as countermeasures and costs, are also explained, and some case studies are presented. 

Table 6.2d shows that nearly half of the disturbed equipment are integrated circuit (1C) boards of these, digital processors and input circuits have the highest risk of disturbance. 

Total Number of Disturbances and Failures Collected for 10 Years (a) Disturbed equipments... 

Disturbed equipments telecommimication 7, protection 3, control 3 The reason for more disturbances in the telecommunications is that the equipments have more connection with CB control... 

This section has summarized experiences of electromagnetic disturbances of control circuits in Japanese power stations and substations collected for 10 years from 1990, and the collected data have categorized by the cause, the incoming route, disturbed equipments, and elements. Also, the characteristics of disturbances, case studies, the influence of the power system operation, countermeasures, and the costs are presented. 

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