The Internship Report Network authoritatively releases the electrical major internship summary. For more information about the electrical major internship summary, please visit the Internship Report Network. 1. Purpose and requirements of the internship: Understand the entire process of electric energy production and the composition, model, parameters, structure, and layout of major electrical equipment, and have a complete concept of the power plant production process. Familiar with the main wiring connection methods and operating characteristics of the power plant; have a preliminary understanding of electrical secondary wiring, relay protection and automatic devices, consolidate and strengthen the theoretical knowledge learned, and lay a good foundation for future work. At the same time, we should learn from the excellent qualities of the working class, be militarized in action, collectivized in life, cultivate correct labor concepts, and lay an ideological foundation for going to and serving the grassroots in the future.
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Main contents of the internship
1. Preliminarily understand the entire production process of power plants and substations.
2. Have a deep understanding of the main equipment of power plants and substations; including generators, transformers, circuit breakers, mutual inductors, isolating switches, reactors, busbar types, structural characteristics, main parameters and functions, and other Assistive devices should also be understood.
3. Focus on understanding the main electrical wiring forms, operating characteristics and maintenance and switching operation sequences of power plants and substations.
4. Understand the wiring methods and backup methods of power used in factories (stations) and how to improve the reliability of power supply in factories (stations).
5. Understand the layout and characteristics of power distribution devices, and understand the significance of safe distances.
6. Understand the layout of the control screen, protection screen and the overall layout of the main control room.
7. Understand the lightning protection measures of power plants and substations.
8. Understand the main equipment and forms, characteristics and parameters of the power part of the power plant, and have a complete concept of power plant production.
9. Deeply understand the primary electrical part of the substation, collect and organize materials for the graduation project, and lay the foundation for the smooth progress of the graduation project.
3. General provisions for the operation of substation on-site operation procedures (electrical primary part)
1. System operation supervision
⑴Normal operation is at a frequency of 50Hz. The deviation shall not exceed +0.2Hz, and the error between the electric clock and the standard time shall not be greater than 30 seconds at any time.
⑵ Within 24 hours on duty, a designated person should be designated to supervise the disk. Abnormal system operation during each period and the name of the supervisor should be recorded in the operation record book.
⑶ During normal operation, the load of each feeder shall not exceed its maximum allowable value, and a red line is required to be marked on the corresponding indicating instrument panel.
⑷The operation log is transcribed on time every hour.
2. Inspection and inspection regulations
⑴Normal inspections shall be conducted no less than three times a day. That is: during shift handover, peak load period (generally 9:00-10:00 and 19:30-21:30), and when the lights are turned off at night. Telescopes must be carried with you during inspections, and telescopes must be used during evening inspections to observe whether there are any abnormal redness or heat in equipment such as knife switches, lead contacts, and TAs.
⑵Supervisory inspections, the shift leader shall conduct comprehensive inspections no less than once every three days, and the station manager shall conduct comprehensive inspections no less than once a week.
⑶Normal inspections by operating personnel should be carried out according to the prescribed inspection routes. After each inspection, the time and location of the inspection, the operating status of the inspection equipment and the name of the inspection personnel should be recorded in the operation work record book.
⑷Inspections should be carried out according to division of labor. The inspection method is mainly carried out by sight, hearing, smelling, touching, testing and other means. The same equipment and equipment used under the same working conditions are compared with each other to find out the existing problems. The inspection must be careful, careful analysis, and correct judgment. When faults or abnormalities are discovered, they should be handled or reported in a timely manner.
⑸ When a single person inspects equipment, he must comply with the relevant provisions of the "Safety Work Procedures for the Electrical Industry" (electrical parts of power plants and substations).
⑹ Fixed-point inspections are required for main equipment.
3. Special inspections
⑴In the following situations, the duty leader or station manager shall decide to increase the number of inspections and appoint a dedicated person to conduct inspections
Inspection: A. When the equipment is over-temperature, overloaded, or the temperature or load increases significantly;
B. Newly discovered or recently developed equipment defects that endanger safe operation but have not been eliminated;
C. When the equipment has suspicious phenomena during operation;
D. During strong winds, freezing, dense fog, snow, and severe weather after thunderstorms;
E. After an accident trip;< /p>
F. Legal holidays and during important power supply tasks notified by superiors;
G. When there are major changes in operating methods;
H. After equipment has been inspected and modified, When there is a long-term outage or when newly installed equipment is put into operation;
I. When there is maintenance work in the station.
⑵ Transformers that are newly put into operation or put into operation after overhaul must be inspected every hour within 24 hours, and the operation conditions must be recorded in the record book in a timely manner.
4. General regulations for switching operations ⑴ A switching operation ticket must be filled in during switching operations, and the "Safety Work Regulations for the Electrical Industry" (electrical parts of power plants and substations) and the grid bureau, provincial The relevant regulations of the Bureau and Changsha Bureau on electrical switching operations.
⑵ Generally, the switching operation ticket is filled in by the operator, is subject to review, and is valid only after approval by the duty leader. Particularly important and complex switching operation tickets must be filled in by the on-duty officer, reviewed by the on-duty manager, approved and signed by the station manager or dedicated engineer before they are valid. And it must be executed under the supervision of the person on duty.
⑶Only one operation task can be filled in each switching operation ticket, and only one single operation item can be filled in each sequence column in the operation ticket.
⑷For all switching operations, the operator and guardian must first conduct a drill on the simulation board to check whether the filled-in operation items and steps are correct.
⑸Check the equipment name, number and location before operation. The supervision and recitation system must be strictly implemented during operation, and operations must be performed one by one in the order of operations. After each operation is completed, mark a "√" in front of the item. After all operations are completed, a review should be carried out. Finally, the execution status and end time should be recorded and reported to the schedule