Hydropower station generator auxiliary equipment high-pressure oil pump control method based on multiple working conditions

Abstract

The application discloses a kind of based on the control method of high-pressure oil pump of hydropower station generator auxiliary equipment under multiple working conditions, comprising: step S1: obtain the current operating condition of unit, determine the control mode of high-pressure oil system;Step S2: after determining the execution strategy of high-pressure oil system under different conditions of unit, monitor the execution flow of strategy under this condition, realize the control of high-pressure oil pump;Step S3: according to the different operating condition of unit, monitor whether the speed of unit meets the speed preset value when high-pressure oil system is put into or withdrawn;Step S4: according to the calculation result of step S3, output the control instruction of high-pressure oil system under current condition;Step S5: according to the output control instruction of step S4, execute the start-stop of main high-pressure oil pump under current condition;The application can put into and withdraw high-pressure oil system according to the different operating condition of unit, more accurately determine high-pressure oil pump put-off condition, can realize the function of remote single control, joint control and automatic control high-pressure oil pump, and start high-pressure oil pump motor in time.

Description

Technical Field

[0001] This invention relates to the field of electrical automatic control technology for hydropower stations, specifically to a high-pressure oil pump control method for auxiliary equipment of hydropower station generators under multiple operating conditions. Background Technology

[0002] The function of the high-pressure oil pump control system is to inject high-pressure oil between the thrust bearing and the mirror plate during unit startup, shutdown, and turning operations to form an oil film. This ensures the thrust bearing is well-lubricated during low-speed rotation, reducing wear and preventing bearing damage. The high-pressure oil pump control system mainly consists of two oil pumps and a generator auxiliary control cabinet control circuit. It primarily receives remote start and stop commands from the monitoring system to ensure normal unit startup and shutdown. However, due to the simple process of engaging and disengaging the high-pressure oil control under different unit operating conditions, abnormal situations such as high-pressure oil pump control failures frequently occur. Especially under different operating conditions such as unit startup and shutdown, the high-pressure oil pump control suffers from unreasonable engagement / disengagement conditions and simplistic control methods, posing potential safety hazards such as thrust bearing wear, seriously affecting the stable operation of the unit. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a high-pressure oil pump control method for auxiliary equipment of hydropower station generators under multiple operating conditions. This method can enable the activation and deactivation of the high-pressure oil system according to different operating conditions of the unit, more accurately determine the activation and deactivation conditions of the high-pressure oil pump, and the monitoring system can realize remote single control, joint control and automatic control of the high-pressure oil pump, and start the high-pressure oil pump motor in a timely manner.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this invention is: a high-pressure oil pump control method for auxiliary equipment of hydropower station generators under multiple operating conditions, which includes the following steps: Step S1: Obtain the current operating conditions of the unit and determine the control mode of the high-pressure oil system; Step S2: After determining the execution strategy of the high-pressure oil system under different operating conditions of the unit, monitor the execution process of the strategy under the operating condition to realize the control of the high-pressure oil pump. Step S3: Based on different operating conditions of the unit, monitor whether the unit speed meets the preset speed value when the high-pressure oil system is engaged or disengaged; scan and collect the unit speed under different operating conditions, and obtain the real-time speed N in the execution process. i Let i be the number of scan cycles in different stages, with an initial value of 1; if N i If the preset speed value under different operating conditions is met, proceed to step S4; otherwise, i = i + 1, and return to step S2. Step S4: Based on the calculation results of step S3, output the control command of the high-pressure oil system under the current operating conditions; Step S5: Execute the start / stop of the main high-pressure oil pump under the current operating conditions according to the output control command of step S4.

[0005] Preferably, in step S1, the high-pressure oil system control mode is automatic, manual, or disconnected. When the high-pressure oil system is in the automatic position, it can receive start / stop control commands from the remote monitoring system. When the high-pressure oil system is in the manual position, it can only receive conventional circuit control commands from the local generator auxiliary control cabinet. When the high-pressure oil system is in the disconnected position, it cannot receive remote control commands from the monitoring system or conventional circuit control commands from the local generator auxiliary control cabinet, thus maintaining the system disconnected mode.

[0006] Preferably, in step S2, the operating conditions of different units are as follows: When the unit is in a standby state, the high-pressure oil pump can be controlled through four modes: local single-step operation, single control mode of the monitoring system, joint control mode of the monitoring system, and automatic control mode of the monitoring system. When the unit is in grid-connected operation, the high-pressure oil pump is controlled through three modes: single control mode, joint control mode, and automatic control mode of the monitoring system.

[0007] More preferably, when the high-pressure oil pump is in the local single-step operation mode, the start-stop control function of the high-pressure oil pump is realized through the conventional hard circuit of the generator auxiliary control cabinet; When the high-pressure oil pump is in the single-control mode of the monitoring system, the operator station of the monitoring system can independently issue high-pressure oil pump operation commands to each pump to realize the start and stop control function of the high-pressure oil pump. When the high-pressure oil pump is in the monitoring system joint control mode, the high-pressure oil system operation command is issued to the high-pressure oil system through the monitoring system operator station, and then the high-pressure oil pump is judged by the PLC of the generator auxiliary control cabinet to determine the main standby mode and output the main high-pressure oil pump control command. When the high-pressure oil pump is in the automatic control mode of the monitoring system, the monitoring system executes the high-pressure oil pump commissioning and decommissioning process according to the unit start-up and shutdown procedures.

[0008] Preferably, in step S3: when the unit is in a standby state and the high-pressure oil injection system is executed after the startup process is started, the unit speed N is determined. i Does it meet the preset value N for high-pressure oil speed at startup? ktr Condition: When executing the high-pressure oil retraction system process after the start-up procedure, determine the unit speed N. i Does it meet the preset value N for high-pressure oil retraction speed at startup? ktc condition; When the unit is in grid-connected operation and the high-pressure oil injection system is initiated after the shutdown procedure, the unit speed N is determined. i Does the preset speed N for high-pressure oil injection during shutdown meet the requirements?ttr Condition: When executing the high-pressure oil return system process after the shutdown procedure is started, determine the unit speed N. i Does the preset value N for high-pressure oil retraction speed during shutdown meet the requirements? ttc condition.

[0009] More preferably, when the unit is in standby mode, the unit speed satisfies N i The high-pressure oil system is activated when the creep speed operating conditions are met.

[0010] Preferably, in step S4: the high-pressure oil system control commands include four types: remote manual start command, remote manual stop command, remote automatic start command, and remote automatic stop command. The remote manual start command and the remote automatic start command for the high-pressure oil system are ORed to form a command to start the high-pressure oil pump system; the remote manual stop command and the remote automatic stop command for the high-pressure oil system are ORed to form a command to stop the high-pressure oil pump system; finally, the command to start the high-pressure oil pump system and the command to automatically stop the high-pressure oil system are sent to step S5.

[0011] Preferably, in step S5: under the current working condition, if a command to start the high-pressure oil pump system is received, the main status of high-pressure oil pumps No. 1 and No. 2 is first determined, and the principle of starting the main pump is adopted. Then, it is determined whether the high-pressure oil pump is faulty. If there is no fault, a remote automatic start command for the main high-pressure oil pump is issued to start the corresponding high-pressure oil pump motor. Under the current operating conditions, if a command to stop the high-pressure oil pump system is received, the operating status of high-pressure oil pumps No. 1 and No. 2 is first determined. Following the principle of "whoever is running, stops", a remote automatic stop command for the corresponding high-pressure oil pump is issued, and the corresponding pump then executes to stop the high-pressure oil pump motor. If both pumps are running at the same time, remote automatic stop commands for both pumps are issued simultaneously, and the corresponding high-pressure oil pump motors are stopped.

[0012] The beneficial effects of this invention are: Compared with the prior art, the beneficial effects of the present invention are: 1. This invention can put the high-pressure oil system into and out of the unit according to different operating conditions, more accurately determine the conditions for putting the high-pressure oil pump into and out of the unit, and the monitoring system can realize the functions of remote single control, joint control and automatic control of the high-pressure oil pump, and start the high-pressure oil pump motor in a timely manner.

[0013] 2. This invention can flexibly control the high-pressure oil system and high-pressure oil pump according to the actual operating conditions of the unit. When the unit is running at low speed during startup or shutdown, the high-pressure oil pump is activated first; when the unit is running at high speed during startup or shutdown, the high-pressure oil pump is deactivated in time; when the unit is in standby mode and the unit speed reaches the creeping speed, the high-pressure oil pump can be activated remotely without conditions to establish an oil film between the thrust bearing and the mirror plate in time, protecting the thrust bearing from burnout.

[0014] 3. This invention can effectively judge and identify the high-pressure oil pump start-up and shutdown strategy, optimize the high-pressure oil pump start-up and shutdown control method, improve the adaptability and conditions of the high-pressure oil pump, and better adapt to the needs of the field unit to establish an oil film under different operating conditions, thereby improving the reliability and safety of the equipment.

[0015] 4. This invention can effectively and accurately identify the preset speed values ​​of the unit under different operating conditions, greatly improving the accuracy of high-pressure oil pump activation and deactivation, and more scientifically and intuitively reflecting the correspondence between the high-pressure oil pump and the unit's operating conditions. It can provide technical support for the success rate of hydropower station unit start-up and shutdown, and further ensure the safe and stable operation of the hydropower station. Attached Figure Description

[0016] Figure 1 Trend analysis of monitoring system under shutdown and standby conditions Figure 1 ; Figure 2 Trend analysis of monitoring system under shutdown and standby conditions Figure 2 ; Figure 3 This is a trend analysis chart of the monitoring system under grid-connected operating conditions. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to specific embodiments.

[0018] Example 1: This invention provides a high-pressure oil pump control system for auxiliary equipment of hydropower station generators under multiple operating conditions. The system includes a data acquisition module, an information processing module, a control command output module, and an execution unit; wherein... The data acquisition module is used to obtain the current operating conditions of the unit, the control mode of the high-pressure oil pump, the control mode of the high-pressure oil system, and the real-time speed during the execution of the process under the current operating conditions.

[0019] The information processing module is used to handle the strategy of putting the high-pressure oil pump into and out of operation under different working conditions, and to determine the real-time speed N under different working conditions. i The correspondence between the preset speed value and the actual speed.

[0020] The control command output module is used to select the operating mode of the high-pressure oil pump based on the real-time speed and strategy judgment results obtained by the information processing module, and output the results to control the high-pressure oil pump.

[0021] The execution unit is used to execute the results of the control command output module, which directly acts on the corresponding main high-pressure oil pump.

[0022] Example 2: This invention provides a high-pressure oil pump control method for auxiliary equipment of hydropower station generators under multiple operating conditions, the method comprising the following steps: Step S1: Obtain the current operating conditions of the unit and determine the control mode of the high-pressure oil system; Step S2: After determining the execution strategy of the high-pressure oil system under different operating conditions of the unit, monitor the execution process of the strategy under the operating condition to realize the control of the high-pressure oil pump. Step S3: Based on different operating conditions of the unit, monitor whether the unit speed meets the preset speed value when the high-pressure oil system is engaged or disengaged; scan and collect the unit speed under different operating conditions, and obtain the real-time speed N in the execution process. i Let i be the number of scan cycles in different stages, with an initial value of 1; if N i If the preset speed value under different operating conditions is met, proceed to step S4; otherwise, i = i + 1, and return to step S2. Step S4: Based on the calculation results of step S3, output the control command of the high-pressure oil system under the current operating conditions; Step S5: Execute the start / stop of the main high-pressure oil pump under the current operating conditions according to the output control command of step S4.

[0023] Example 3: This invention provides a local single-step control method for the high-pressure oil pump of the generator auxiliary equipment in a hydropower station under shutdown standby conditions. The method includes the following steps: Step S1: The current operating condition of the unit is obtained as a standby shutdown state. It is determined that the high-pressure oil system does not have the conditions for remote operation and its control mode is local single-step operation mode.

[0024] Step S2: Determine whether the high-pressure oil system in the generator auxiliary control cabinet is in local mode. The high-pressure oil pump in the field cabinet adopts a conventional hard-loop control method. The control loops of the two pumps are consistent, enabling independent and manual control functions. Here, only the control method of one pump is listed, taking high-pressure oil pump No. 1 as an example.

[0025] Step S3: Determine if there is a malfunction in high-pressure oil pump No. 1, and whether its control handle is in manual mode. If both conditions are normal, perform the following operation.

[0026] Step S4: Determine if the stop button for high-pressure oil pump No. 1 is activated. If a stop command signal is received, output a local manual stop command for high-pressure oil pump No. 1 and execute the stop of high-pressure oil pump No. 1. If no stop command signal is received, proceed to step S5.

[0027] Step S5: Determine if the start button for high-pressure oil pump No. 1 is activated. If a start command signal is received, output a local manual start command for high-pressure oil pump No. 1, and execute the start command for high-pressure oil pump No. 1.

[0028] Step S6: The local single-step control method for the No. 2 high-pressure oil pump is the same as that for steps S3 to S5.

[0029] Example 4: This invention provides a method for controlling the high-pressure oil pump of auxiliary equipment of a hydropower station generator in single-control mode of a monitoring system under multiple operating conditions. The method includes the following steps: Step S1: Obtain the current operating status of the unit and determine whether the high-pressure oil system is ready for remote operation. The high-pressure oil system can be operated in single-control mode by the monitoring system under conditions such as unit shutdown standby or unit grid connection, and is generally operated manually by the operator.

[0030] Step S2: Determine if the operator station allows operation. Operators can typically operate the high-pressure oil system in single-control mode of the monitoring system during unit commissioning or emergencies. Operators need to log in to the monitoring system with their account and password to operate the equipment on the monitoring system page.

[0031] Step S3: Determine if the high-pressure oil system is in remote mode? The control mode of the high-pressure oil system is set on the generator auxiliary control cabinet, mainly divided into local and remote modes. The operator opens the generator page in the monitoring system screen to check if the control mode of the high-pressure oil system is remote mode. If not, the operator checks the local equipment and switches the high-pressure oil system control mode to remote mode. Only after confirmation can step S4 be executed.

[0032] Step S4: The operator determines whether the high-pressure oil system in the monitoring system is in single-control mode. If it is confirmed to be in single-control mode, step S5 is executed.

[0033] The high-pressure oil pump control mode is divided into single control mode and joint control mode. In single control mode, the monitoring system can independently operate the corresponding No. 1 and No. 2 high-pressure oil pumps remotely, and the command is directly sent to the conventional hard circuit of the generator auxiliary control cabinet. In joint control mode, the monitoring system can send commands to start and stop the high-pressure oil system remotely to the PLC of the generator auxiliary control cabinet, and the PLC will automatically determine the main and standby pumps for start and stop control.

[0034] Step S5: In single-control mode, the operator selects the high-pressure oil pump to operate on the monitoring system screen and performs a self-check on the conditions allowing remote operation of high-pressure oil pump No. 1. Step S6 can only be executed after the self-check conditions are met. Because in single-control mode, the operation command is directly sent to the conventional hard-loop control of the generator auxiliary control device through the monitoring system control device, the control loops of the two pumps are consistent, enabling independent control functions. Only the control method for one pump is listed here, taking high-pressure oil pump No. 1 as an example.

[0035] The self-test items mainly include LCU automatic mode conditions, normal DC24V power supply of generator auxiliary control cabinet, automatic control of No. 1 high-pressure oil pump, and signals such as thermal overload of No. 1 high-pressure oil pump.

[0036] Step S6: The operator checks whether the No. 1 high-pressure oil pump is in automatic mode and whether there is any fault information. The operator opens the generator screen of the monitoring system to check the automatic mode and fault status of the No. 1 high-pressure oil pump. If the status information is normal, proceed to step S7; otherwise, the operator checks on-site to ensure that the oil pump is in automatic mode and there is no fault information.

[0037] Step S7: The operator checks if there is a stop command for high-pressure oil pump No. 1. If there is a stop command, a remote manual stop command for high-pressure oil pump No. 1 is output, and the stop of high-pressure oil pump No. 1 is executed.

[0038] Step S8: Issue the operation command for high-pressure oil pump No. 1. The operator issues a start or stop command for high-pressure oil pump No. 1 on the monitoring system screen as needed. If the operator issues a stop command for high-pressure oil pump No. 1, then proceed to step S7; if the operator issues a start command for high-pressure oil pump No. 1, then a remote manual start command for high-pressure oil pump No. 1 is output, and the start command for high-pressure oil pump No. 1 is executed.

[0039] Example 5: This invention provides a method for controlling the high-pressure oil pump of auxiliary equipment of a hydropower station generator in a multi-condition monitoring system linkage mode. The method includes the following steps: Steps S1 to S3: The steps for controlling the high-pressure oil pump of the auxiliary equipment of the hydropower station generator under the joint control mode are similar to those for steps S1 to S3 under the single control mode.

[0040] Step S4: The operator determines whether the high-pressure oil system in the monitoring system is in joint control mode. If it is confirmed to be in joint single control mode, step S5 is executed.

[0041] Step S5: The operator checks the monitoring system screen for a command to stop the high-pressure oil system. Based on the calculation results, the operator outputs the control command for the high-pressure oil system under the current operating conditions.

[0042] The remote manual stop command and the remote automatic stop command for the high-pressure oil system are linked by an OR relationship to form a single command to stop the high-pressure oil pump system. Under the current operating conditions, upon receiving a command to stop the high-pressure oil pump system, the operating status of high-pressure oil pumps 1 and 2 is first determined. Following the principle of "whichever is running stops," a remote automatic stop command for the corresponding pump is issued, and the corresponding pump then executes the stop command for its high-pressure oil pump motor. If both pumps are running simultaneously, remote automatic stop commands for both pumps are issued simultaneously, executing the stop command for the corresponding high-pressure oil pump motor.

[0043] Step S6: The operator issues a start or stop command for the high-pressure oil system on the monitoring system screen as needed, and executes the start and stop of the main high-pressure oil pump under the current working conditions.

[0044] When the monitoring system issues a command to stop the high-pressure oil system, step S5 is executed. When the monitoring system issues a command to start the high-pressure oil system, the remote manual start command and the remote automatic start command for the high-pressure oil system are related by OR to form a command to start the high-pressure oil pump system. Under the current operating conditions, if a command to start the high-pressure oil pump system is received, the main status of high-pressure oil pumps No. 1 and No. 2 is first determined, and the principle of starting the main pump is adopted. Then, it is determined whether the corresponding main high-pressure oil pump is faulty. If there is no fault, a remote automatic start command for the main high-pressure oil pump is issued to start the corresponding high-pressure oil pump motor.

[0045] The following analysis uses the example of a generator unit operating in either a standby or grid-connected state, with the high-pressure oil pump in the monitoring system's joint control mode, to analyze the monitoring system trends during these states. Figure 1 and 2 This is a trend analysis chart of the monitoring system under standby conditions. Figure 3 This is a trend analysis chart of the monitoring system under grid-connected operating conditions.

[0046] As shown in the diagram, when the unit is operating in either a shutdown or grid-connected state, both high-pressure oil pumps No. 1 and No. 2 are in automatic mode. When the unit startup process executes the step of engaging the high-pressure oil pumps, the monitoring system issues a "Automatic Engagement of High-Pressure Oil System during Startup" command, with its status set to 1. After a 5-second delay, the outlet manifold pressures SP03 and SP04 of the high-pressure oil system reach their set values, meaning both SP03 and SP04 are activated, and their status changes back to 1. This satisfies the conditions for successful high-pressure oil pressure buildup, indicating successful pressure buildup. When the unit speed reaches the set speed value, the high-pressure oil system is deactivated during the startup process. This invention can engage the high-pressure oil system according to different unit operating conditions, more accurately determine the conditions for engaging the high-pressure oil pumps, and the monitoring system can remotely control the high-pressure oil pumps, promptly starting the high-pressure oil pump motors. When the unit operates at high speed during startup, the high-pressure oil pump is promptly disengaged. This invention can effectively and accurately identify the preset speed values ​​of the unit under different operating conditions, greatly improving the accuracy of high-pressure oil pump activation and deactivation. It also more scientifically and intuitively reflects the correspondence between the high-pressure oil pump and the unit's operating conditions, providing technical support for the success rate of hydropower station unit startup and shutdown, and further ensuring the safe and stable operation of the hydropower station.

[0047] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The embodiments and features described in these embodiments can be arbitrarily combined without conflict. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A control method for a high-pressure oil pump of auxiliary equipment of a hydropower generator under multiple working conditions, characterized in that: It includes the following steps: Step S1: Obtain the current operating conditions of the unit and determine the control mode of the high-pressure oil system; Step S2: After determining the execution strategy of the high-pressure oil system under different operating conditions of the unit, monitor the execution process of the strategy under the operating condition to realize the control of the high-pressure oil pump. Step S3: Based on different operating conditions of the unit, monitor whether the unit speed meets the preset speed value when the high-pressure oil system is engaged or disengaged; scan and collect the unit speed under different operating conditions, and obtain the real-time speed N in the execution process. i Let i be the number of scan cycles in different stages, with an initial value of 1; if N i If the preset speed value under different operating conditions is met, proceed to step S4; otherwise, i = i + 1, and return to step S2. Step S4: Based on the calculation results of step S3, output the control command of the high-pressure oil system under the current operating conditions; Step S5: Based on the output control command of step S4, execute the start / stop of the main high-pressure oil pump under the current operating conditions; In step S1, the high-pressure oil system is controlled in automatic, manual, or disconnected mode. When the high-pressure oil system is in automatic mode, it can receive start / stop control commands from the remote monitoring system. When the high-pressure oil system is in manual mode, it can only receive conventional circuit control commands from the local generator auxiliary control cabinet. When the high-pressure oil system is in disconnected mode, it cannot receive remote control commands from the monitoring system or conventional circuit control commands from the local generator auxiliary control cabinet, and the system disconnected mode is maintained. In step S2, the operating conditions of different units are as follows: When the unit is in a standby state, the high-pressure oil pump can be controlled through four modes: local single-step operation, single control mode of the monitoring system, joint control mode of the monitoring system, and automatic control mode of the monitoring system. When the unit is in grid-connected operation, the high-pressure oil pump is controlled through three modes: single control mode of the monitoring system, joint control mode of the monitoring system, and automatic control mode of the monitoring system. When the high-pressure oil pump is in the local single-step operation mode, the start and stop control function of the high-pressure oil pump is realized through the conventional hard circuit of the generator auxiliary control cabinet. When the high-pressure oil pump is in the single-control mode of the monitoring system, the operator station of the monitoring system can independently issue high-pressure oil pump operation commands to each pump to realize the start and stop control function of the high-pressure oil pump. When the high-pressure oil pump is in the monitoring system joint control mode, the high-pressure oil system operation command is issued to the high-pressure oil system through the monitoring system operator station, and then the high-pressure oil pump is judged by the PLC of the generator auxiliary control cabinet to determine the main standby mode and output the main high-pressure oil pump control command. When the high-pressure oil pump is in the automatic control mode of the monitoring system, the monitoring system executes the high-pressure oil pump commissioning and decommissioning process according to the unit start-up and shutdown process. In step S4: The high-pressure oil system control commands include four types: remote manual start command, remote manual stop command, remote automatic start command, and remote automatic stop command. The remote manual start command and the remote automatic start command for the high-pressure oil system are ORed to form a command to start the high-pressure oil pump system; the remote manual stop command and the remote automatic stop command for the high-pressure oil system are ORed to form a command to stop the high-pressure oil pump system; finally, the command to start the high-pressure oil pump system and the command to stop the high-pressure oil pump system are sent to step S5. In step S5: Under the current operating conditions, if a command to start the high-pressure oil pump system is received, the main status of high-pressure oil pumps No. 1 and No. 2 is first determined, and the principle of starting the main pump is adopted. Then, it is determined whether the high-pressure oil pump is faulty. If there is no fault, a remote automatic start command for the main high-pressure oil pump is issued to start the corresponding high-pressure oil pump motor. Under the current operating conditions, if a command to stop the high-pressure oil pump system is received, the operating status of high-pressure oil pumps No. 1 and No. 2 is first determined. Following the principle of "whoever is running, stops", a remote automatic stop command for the corresponding high-pressure oil pump is issued, and the corresponding pump then executes to stop the high-pressure oil pump motor. If both pumps are running at the same time, remote automatic stop commands for both pumps are issued simultaneously, and the corresponding high-pressure oil pump motors are stopped.

2. The method for controlling the high-pressure oil pump of the auxiliary equipment of the hydroelectric generator under multiple working conditions according to claim 1, characterized in that: In step S3: When the unit is in standby mode and the high-pressure oil injection system is initiated after the startup process, the unit speed N is determined. i Does it meet the preset value N for high-pressure oil speed at startup? ktr Condition: When executing the high-pressure oil retraction system process after the start-up procedure, determine the unit speed N. i Does it meet the preset value N for high-pressure oil retraction speed at startup? ktc condition; When the unit is in grid-connected operation and the high-pressure oil injection system is initiated after the shutdown procedure, the unit speed N is determined. i Does the preset speed N for high-pressure oil injection during shutdown meet the requirements? ttr Condition: When executing the high-pressure oil return system process after the shutdown procedure is started, determine the unit speed N. i Does the preset value N for high-pressure oil retraction speed during shutdown meet the requirements? ttc condition.

3. The method for controlling the high-pressure oil pump of the auxiliary equipment of the hydroelectric generator under multiple working conditions according to claim 2, characterized in that: When the unit is in the standby state, the unit speed N i When the peristaltic speed action condition is met, the high-pressure oil system is put into operation.

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