GB/T 18482-2026Code for the startup and commissioning of reversible pumped storage units (English PDF)

5.1 General Requirements

5.1.1 The unit has been installed and partially commissioned and has passed acceptance.

5.1.2 The power plant signs a grid connection and dispatch agreement and a power purchase and sale contract with the power grid company.

5.1.3 The unit passed the quality supervision and inspection and obtained the power construction project grid connection opinion letter.

5.1.4 The Commission approves the Trial Operation Outline. The contents of the Trial Operation Outline are detailed in Appendix B.

5.1.5 The trial operation command approved the start of the trial operation test plan.

5.1.6 The outline for the trial operation and related test plans have been submitted to the relevant power grid departments for review and filing.

5.1.7 The personnel responsible for starting the trial operation have completed the division of labor, briefing, and training.

5.1.8 Operational staff shall complete training and obtain the corresponding qualification certificates, and be qualified to work.

5.1.9 The equipment and ground related to the start-up of this unit have been cleaned, the roads are unobstructed, and the lifting holes and temporary openings have been sealed.

5.1.10 Command and communication related to the startup of this unit are unimpeded.

5.1.11 All equipment related to the startup of this unit has been uniformly numbered and labeled.

5.1.12 Operating equipment and non-operating equipment have been isolated and prominent safety warning signs have been erected.

5.1.13 The monitoring instruments and meters related to the startup of this unit are ready and within the validity period of their inspection certificates.

5.1.14 The special equipment related to the start-up of this unit, such as air tanks, pressure oil tanks, pressure pipelines and accessories, have obtained the required special equipment use permits. Use the registration certificate.

5.3.1 Water conveyance system and unit flow channel

5.3.1.1 The water filling test of the water supply system and unit flow channels has been completed, and the steps and methods shall comply with the provisions of Appendix C.

5.3.1.2 The grouting holes and other seals of the tailrace water conveyance system are intact, and the trash racks have passed inspections of the channel entry and the cleanliness of the flow channel behind the racks. The flow from the lower reservoir to the tailrace... The tailrace system channel between the floodgates has been filled with water.

5.3.1.3 The inlet and outlet gates, opening and closing equipment, and their control systems of the lower reservoir have been installed and commissioned successfully. The gates can be opened and closed on-site under still water conditions. Normally, the opening and closing times meet the design requirements, and the gate is in the fully open position.

5.3.1.4 The pressure readings at all points on the pressure steel pipe are normal, the grouting holes in the water diversion and conveying system are properly sealed, and the trash rack in the trench and the flow channel behind the rack are inspected. The cleanliness inspection passed.

5.3.1.5 The inlet and outlet gates, opening and closing equipment, and their control systems of the upper reservoir have been installed and commissioned successfully. The gates can be opened and closed on-site under still water conditions. Normally, the opening and closing times meet design requirements; the emergency gate closing button is used in the central control room and other locations to close the inlet and outlet gates of the upper reservoir, and the action is normal. Normal; the gate is in the fully open position.

5.3.1.6 The pressure readings on all parts of the spiral casing and tailrace pipe are normal.

5.3.1.7 The tailrace emergency gate, opening and closing equipment, and its control system have been installed and commissioned successfully. Under still water conditions, the on-site gate opening and closing functions normally. The timeframe meets design requirements; the emergency gate closure button was used in the central control room and other locations to close the tailrace emergency gate, and the operation was normal; the gate is fully open. Location.

5.3.1.8 The hydraulic monitoring systems for the upper and lower reservoirs and surge tanks have been installed, commissioned, and are functioning correctly, and the monitoring system is providing accurate feedback.

5.3.2 Water pumps, turbines, and their auxiliary equipment

5.3.2.1 All components of the water pump and turbine have been installed and passed inspection.

5.3.2.2 The tailrace pipe and spiral casing inlet door are closed.

5.3.2.3 The top cover's gravity drainage holes are unobstructed, and the top cover's drainage pump has been installed, commissioned, and put into automatic operation.

5.3.2.4 The spindle working seal and maintenance seal have been installed and tested successfully. The valves in the working seal water supply pipeline are functioning normally, and the water pressure and flow rate are within acceptable limits. It has been adjusted to the design specifications, and the main and backup water source switching function is working normally.

5.3.2.5 The water-guided bearing lubrication and cooling system has been installed and commissioned successfully, and the oil level in the water guide oil tank should meet the design requirements.

5.3.2.6 The water guiding mechanism has been installed. The clearance between the guide vanes, the end clearance, and the clamping stroke of the servo motor should meet the design requirements. The shear pin and... Other guide vane protection devices are functioning normally.

5.3.2.7 The guide vane position switch, temperature measuring device and other automated components have been installed and debugged to be qualified, and the monitoring system provides correct feedback.

5.3.2.8 The volute drain valve and tailpipe drain valve operate normally and are in the closed state.

5.3.2.9 The valves in the upper and lower leak-proof ring water supply pipelines are functioning normally, and the water pressure and flow rate have been adjusted to the design values.

5.3.2.10 The bolt tightening of important parts such as water pump turbine, top cover, spiral casing inlet door, tailrace pipe inlet door, etc. has passed the inspection.

5.3.3 Speed Control System

5.3.3.1 The speed control system has been installed, debugged, and passed acceptance.

5.3.3.2 The static characteristic test of the speed regulation system has been completed, and the no-load regulation parameters have been initially set.

5.3.3.3 The hydraulic device of the speed control system has been installed and commissioned successfully. The automatic start-stop logic of the oil pump should meet the design requirements, and the unloading valve and safety valve should operate correctly. The values should meet design requirements, the manual and automatic air replenishment functions of the automatic air replenishment device should be correct, and the pressure oil tank should be functioning correctly in cases of low oil pressure, emergency low oil pressure, and low oil level. The switch quantities such as low oil level in case of an accident have been set according to the design values; the hydraulic device has been put into automatic operation.

5.3.3.4 The guide vane relay locking device has been installed and commissioned successfully, operates normally, and the monitoring system provides correct feedback.

5.3.3.5 The relationship curves between guide vane opening, servo motor stroke, and governor opening under waterless conditions have been recorded. The full opening stroke of the guide vane servo motor is shown. The full-open stroke used in the adjustment and guarantee calculations should be consistent with the design requirements; the opening and closing times of the guide vanes should meet the design requirements, and the full stroke of the guide vanes corresponding to each segment should be consistent. The time error should be less than

0.5 s, and the deviation between the actual segment closure point and the design value should be less than ±2%; the single guide vane relay should be used for the guide vane. The leaf synchronization should meet the design requirements.

5.3.3.6 The speed control system and monitoring system linkage function is normal. Simulate start-up and shutdown operations (including emergency shutdown) in both manual and automatic modes. The test results are correct; under static conditions, the mechanical overspeed protection device activated and the speed control system lost power, and the guide vane operated correctly.

5.3.3.7 The unit's speed measuring device has been installed and commissioned successfully. The installation of the gear speed sensor should meet the design requirements, and the simulated speed should be used to verify the various speeds. The switch signal operates correctly, and the speed measuring device outputs an alarm signal when it loses power. The speed switch signal is normal.

5.3.4 Main inlet valve

5.3.4.1 The main inlet valve has been installed, commissioned, and passed inspection.

5.3.4.2 The main inlet valve body has been filled with water and vented. The bottom drain valve, top vent valve, and pressure steel pipe drain valve of the main inlet valve are in operation. The device is in the off state.

5.3.4.3 The hydraulic device of the main inlet valve shall meet the following requirements.

a) If it is hydraulically controlled, check that the main inlet valve hydraulic device has been installed and debugged successfully, and that the automatic start/stop logic of the oil pump meets the design requirements. The operating values of the load valve and safety valve meet the design requirements, and the pressure oil tank low oil pressure, emergency low oil pressure, low oil level, and emergency low oil level are all regulated. The control volume has been set according to the design value; the hydraulic device has been put into automatic operation.

b) If it is water pressure controlled, check that the main inlet valve pipeline system has been installed and tested successfully, and that the manual and automatic sewage discharge operations of the water source filter are normal. The filtration accuracy meets the design requirements.

5.3.4.4 The relay lock device has been installed and commissioned successfully, operates normally, and the monitoring system provides correct feedback.

5.3.4.5 The main inlet valve's maintenance seal, working seal, and bypass valve have been installed, tested, and are functioning correctly. The monitoring system provides accurate feedback, and the working seal is secure. The interlocking function of the main inlet valve position should meet the design requirements.

5.3.4.6 The main inlet valve and monitoring system linkage function are normal. Under still water conditions, manually and automatically operate the main inlet valve to open and close it respectively. The water valves (including those for emergency shutdown) have passed the test; the opening and closing times should meet the design requirements. The test simulates the operation of the mechanical overspeed protection device and the main water inlet. The valve lost power, but the main inlet valve operated correctly.

5.3.4.7 The results of the interlocking test between the main inlet valve and the tailrace emergency gate shall meet the design requirements.

5.3.5 Auxiliary equipment for hydraulic machinery

5.3.5.1 The unit's technical water supply system has been installed and commissioned successfully. The water supply pumps are operating normally on-site, the water filters are working properly, and the unit and main transformer cooler are functioning correctly. The flow rate and pressure of the cooling water have been set according to the design values; the results of the linkage test between the technical water supply system and the unit monitoring system should meet the design requirements, and the water supply pump... The switching function works normally.

5.3.5.2 The unit's maintenance drainage system has been installed and commissioned successfully.

5.3.5.3 The plant's internal leakage drainage system has been installed and commissioned successfully. If designed as gravity drainage, the gravity drainage system is confirmed to be functioning normally.

5.3.5.4 The public compressed air system has been installed and commissioned successfully.

5.3.5.5 The unit's phase-adjusting pressurized water system has been installed and commissioned successfully. There are no leaks in the air storage tank, pipelines, and valves; the charging valve, air supply valve, and exhaust valve are all functioning correctly. The opening and closing times of volute-type pressure regulating valves, etc., should meet design requirements; all gauges should display correctly; safety valves, pressure reducing valves, etc., should function normally, and their set values should meet requirements. Design requirements.

5.3.5.6 The tailwater level gauge and level switch have been installed and tested successfully.

5.3.5.7 Safety warning signs or isolation gates have been installed near the outlet of the plant's common return water and exhaust main pipe. Valves connecting to other units should be in operation. Fully closed or blocked.

5.3.5.8 The static air-filling and water-pressurization test of the unit has been completed, and the linkage with the monitoring system is correct. The water-filling time, air tank pressure, and volume should meet the requirements. Design requirements. Static water return and exhaust test completed, with correct linkage with the monitoring system; simulated accident during unit compression, replenishment, and exhaust processes. The machine has been shut down, and the shutdown procedure was correct.

5.3.5.9 The unit's hydraulic measurement system has been installed and commissioned successfully.

5.3.5.10 The valve status of the public oil, gas and water system should meet the design requirements, and isolation measures from other units should be completed.

5.3.6 Generator motors and their auxiliary equipment

5.3.6.1 All components of the generator motor have been installed and passed inspection.

5.3.6.2 The interior of the generator motor has been cleaned, and there should be no debris left in the air gap between the stator and rotor.

5.3.6.3 The guide bearing and thrust bearing have been installed and commissioned successfully; the oil level in the oil tank should meet the design requirements; and the temperature measuring and oil level measuring devices have been installed and commissioned. The test was passed; the bearing external circulation cooling system has been installed and tested successfully; the thrust bearing high-pressure oil jacking device has been installed and tested successfully, and its operation is normal. The AC/DC oil pump switching function is normal.

5.3.6.4 Cooling water supply system for the upper and lower conductors, thrust bearings, and air cooler of the generator motor, including coolers, piping, valves, and automation. The components have been installed, tested, and are in good working order.

5.3.6.5 The mechanical braking system has been installed and tested successfully, the air supply is normal, the manual and automatic brakes engage and disengage normally, and the monitoring system reports the correct position. The results of the input and output fault simulations should meet the design requirements.

5.3.6.6 The bolt tightness of important parts such as the upper and lower wind deflectors and wind deflector rings of the generator motor has passed the acceptance test.

5.3.6.7 Temperature measuring devices for all parts of the generator motor have been installed, tested, and qualified.

5.3.7 Excitation System

5.3.7.1 The excitation system has been installed, commissioned,...