3. 1. 1.2 Remove the temporary grounding wires of all circuits and restore permanent safety measures. ?
3. 1. 1.3 Check the generator, main transformer, high-voltage transformer, excitation system, primary and secondary equipment and circuit of closed bus. 3. 1. 1.4 Check that the cooling systems of main transformer and high voltage transformer are normal according to the transformer operation regulations. ?
3. 1. 1.5 Understand the starting test items, contents and requirements of generators, excitation systems, transformer systems, auxiliary power systems and related relay protection automatic devices. ?
3. 1. 1.6 The cooling water system, sealing oil system and hydrogen system were put into normal operation, and the generator was replaced with hydrogen. ?
3. 1. 1.7 Before installing the 220kV bus circuit breaker on Hehe transformer group, it is necessary to test whether the main switch and field-extinguishing switch (including their interlocks) are closed and disconnected properly. ?
3. 1. 1.8 Measurement of generator bearing insulation and oil circuit insulation is qualified.
3. 1. 1.9 The insulation resistance of generator rotor is qualified.
3. 1. 1. 10 Check and smear the generator carbon brush.
3. 1. 1. 1 1? Transmission operation?
Check that the protection linking plate and setting value of generator, main transformer, high-voltage auxiliary transformer and excitation system have been put into operation according to the requirements of protection setting book. 2. Check that the 220kV neutral grounding breaker of main transformer has been closed. ? 3. Send the main switch, circuit breaker power supply and circuit breaker operation power supply. 4.？ According to the requirements of operation mode, close the 220kV busbar side circuit breaker of main transformer. ? 5. According to the transformer operation regulations, send the power supply to the cooling device of the main transformer and high-voltage auxiliary transformer, start the oil pump and fan, and check the normal operation. 6. Check that the three groups of PT generator handcart are in the working position, and the high-voltage insurance has been opened, and then send it to the PT generator for secondary insurance. 7. Stop using the generator enclosed bus micro-positive pressure device, turn on the generator enclosed bus fan power supply and start the fan. 8. Power supply for grounding detection device of generator and excitation system.
Send excitation system 220V starting power supply, 380V AC auxiliary power supply and 1 10V DC power supply. ? 10. Close all switches in the excitation cabinet, make all insurances, close the cupboard door and lock it. 1 1. On-site inspection of the excitation system without alarm and fault signals. 12. Switch the excitation system to remote control. 13. Power supply for generator-transformer protection. ? 14. Generator-transformer operation/signal power supply. 15. Turn on the power of the generator transmitter. ?
3.2 Startup and parallel connection of generators?
3.2. 1 Before starting the generator, adjust the excitation adjusting potentiometer to the lowest voltage.
3.2.2 After the generator starts to rotate, it should be considered that the generator and all its equipment are electrified.
3.2.3? For the unit that is started for the first time after installation and maintenance, the rotating speed should be slowly increased, and the generator sound should be monitored to check the bearing oil flow and the vibration of the unit. ?
3.2.4 When the generator speed reaches half of the rated speed, check whether the brush on the slip ring has jumping, jamming or poor contact. If there is, we should try to eliminate it. ?
3.2.5 When the speed reaches the rated value, the following items should be checked: 3.2.5. 1 bearing oil flow temperature and bearing bush temperature; 3.2.5.2 checks for hydrogen leakage; ?
3.2.5.3 checks the water pressure, flow and leak detector. , should be normal;
3.2.5.4 check hydrogen pressure, seal oil pressure, hydrogen oil pressure difference, etc. , should be normal.