Land combined debugging system for shaft generator of green new energy ship

Abstract

The invention provides a land combined debugging system for a shaft generator of a green new energy ship. The land combined debugging system comprises a driving motor, a transmission shaft assembly, the shaft generator, a distribution board, a battery energy storage module, a dry load module and a control unit. The driving motor is configured to simulate power output of a ship main engine shaft; the transmission shaft assembly is connected with the driving motor and the axle generator; the distribution board is electrically connected with the axle generator and is configured to receive and distribute electric energy; the battery energy storage module is connected with the distribution board through the bidirectional converter and is used for simulating energy storage and discharging; the dry-type load module is connected with the distribution board and used for simulating a ship power grid load; the control unit is configured to coordinate cooperative work of the driving motor, the axle generator and the battery energy storage module and execute a multi-mode debugging task. According to the technical scheme, through modular design, multi-mode debugging and intelligent control technologies, the technical problems of test environment limitation, insufficient working condition coverage, data tracing difficulty and energy efficiency verification deficiency at least can be solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ship power system testing, and particularly relates to a green new energy ship shaft generator land joint debugging system. BACKGROUND

[0002] The traditional shaft generator debugging has the following defects:

[0003] Test environment limitation: real ship debugging is required after ship construction is completed, which has a long cycle and high risk;

[0004] Insufficient working condition coverage: unable to simulate complex scenarios such as sudden load change (such as sudden loading / unloading) and multi-power coordination;

[0005] Data tracing difficulty: lack of intelligent analysis module, and debugging results rely on manual judgment;

[0006] Energy efficiency verification missing: difficult to quantify the actual effect of the battery energy storage system in peak load shifting.

[0007] Therefore, how to provide a green new energy ship shaft generator land joint debugging system, which can solve the above technical problems through modular design, multi-mode debugging and intelligent control technology, has become a technical problem to be solved. SUMMARY

[0008] The embodiment of the present application provides a green new energy ship shaft generator land joint debugging system, which can solve at least the technical problems of test environment limitation, insufficient working condition coverage, data tracing difficulty and energy efficiency verification missing through modular design, multi-mode debugging and intelligent control technology.

[0009] In the embodiment of the present application, a green new energy ship shaft generator land joint debugging system is provided, which comprises a driving motor 1, a transmission shaft assembly 2, a shaft generator 3, a power distribution board 4, a battery energy storage module 5, a dry load module 6 and a control unit 7.

[0010] The driving motor 1 is configured to simulate the power output of the ship main engine shaft;

[0011] The transmission shaft assembly 2 comprises a short shaft 21 and an intermediate bearing 22, and connects the driving motor 1 and the shaft generator 3;

[0012] The power distribution board 4 is electrically connected with the shaft generator 3 and is configured to receive and distribute electric energy;

[0013] The battery energy storage module 5 is connected with the power distribution board 4 through a bidirectional converter 51 and is used for simulating energy storage and discharge;

[0014] The dry load module 6 is connected to the power distribution board 4 and used to simulate the load of the ship power grid.

[0015] The control unit 7 is configured to coordinate the cooperative work of the driving motor 1, the shaft generator 3 and the battery energy storage module 5, and perform multi-mode debugging tasks.

[0016] Further, the driving motor 1 is a variable frequency motor, whose output torque range covers 80%-120% of the actual working condition of the ship main engine shaft, and the driving motor 1 is equipped with a torque sensor 11 to feed back torque data to the control unit 7 in real time.

[0017] Further, the transmission shaft assembly 2 further comprises an elastic coupling 23 and a vibration monitoring module 24.

[0018] The elastic coupling 23 connects the driving motor 1 and the short shaft 21, allowing axial offset of ±2mm.

[0019] The vibration monitoring module 24 is integrated into the intermediate bearing 22 and used to detect the vibration frequency and amplitude of the transmission shaft, and trigger an alarm when the threshold value is exceeded.

[0020] Further, the power distribution board 4 is configured as a multi-bus structure, comprising a main bus 41, an energy storage bus 42 and a load bus 43.

[0021] The rated voltage of the main bus 41 is 690V±5%, and the output end of the shaft generator 3 is connected to the main bus 41.

[0022] The voltage range of the energy storage bus 42 is 400V-800V, and the bidirectional converter 51 is connected to the energy storage bus 42.

[0023] The load bus 43 is configured with an adjustable impedance module 431, and the load capacity simulation range is 0-2MW.

[0024] Further, the battery energy storage module 5 comprises a box-type lithium ion battery pack 52, a thermal management subsystem 53 and an SOC state of charge dynamic calibration module 54.

[0025] The total capacity of the box-type lithium ion battery pack 52 is ≥1MWh, and it supports 0.5C charging and discharging rate.

[0026] The thermal management subsystem 53 maintains the battery temperature at 20-35℃ through liquid cooling circulation.

[0027] The error rate of the SOC state of charge dynamic calibration module 54 is ≤1%.

[0028] Further, the control unit 7 performs at least three of the following debugging modes:

[0029] a) Shaft generator and auxiliary generator parallel test: synchronize the frequency and phase of the shaft generator 3 and the simulated auxiliary generator, and achieve grid connection when the deviation is ≤0.5 Hz;

[0030] b) Sudden load test: apply or remove 50% rated load within 0.5 seconds, and record the voltage fluctuation range;

[0031] c) Peak clipping and valley filling test: according to the preset load curve, control the battery energy storage module 5 to discharge during the peak period and charge during the valley period;

[0032] d) Multi-power coordination test: mix the shaft generator 3, the battery energy storage module 5 and the external grid simulation source, and optimize the power distribution.

[0033] Further, the joint debugging system further comprises a data acquisition and analysis module 8;

[0034] The data acquisition and analysis module 8 is used for real-time acquisition of the power generation efficiency, harmonic distortion rate and insulation resistance data of the shaft generator 3; generation of a debugging report, marking the deviation of key parameters and standard values; and prediction of the equipment life through a machine learning algorithm, and output of maintenance suggestions.

[0035] Further, the control unit 7 integrates a remote operation interface 71, supports receiving cloud debugging instructions through 5G / optical fiber communication, AR visualization guidance, display of shaft alignment error and correction scheme, and emergency shutdown protocol for cutting off power within 0.1 seconds when insulation failure or overheating is detected.

[0036] Further, the surface of the transmission shaft assembly 2 is coated with a wear-resistant coating 25 with a friction coefficient ≤0.15, and an axle temperature infrared monitor 26 is configured, with an over-temperature threshold set to 80℃.

[0037] Further, the battery energy storage module 5 supports a virtual synchronous generator VSG control mode, and the simulation inertia parameter adjustable range is 0.5s-5s, and the damping coefficient is 0.1-2.0.

[0038] The beneficial effects brought by the present application are as follows:

[0039] From the above scheme can be seen, the embodiment of the application provides a kind of green new energy ship shaft generator land combined debugging system, comprising: drive motor 1, transmission shaft assembly 2, shaft generator 3, distribution board 4, battery energy storage module 5, dry load module 6 and control unit 7.Drive motor 1 is configured as the power output of analog ship main engine shaft;Transmission shaft assembly 2 includes short shaft 21 and intermediate bearing 22, connects drive motor 1 with shaft generator 3;Distribution board 4 is electrically connected with shaft generator 3, is configured to receive and distribute electric energy;Battery energy storage module 5 is connected with distribution board 4 by bidirectional converter 51, for simulating energy storage and discharge;Dry load module 6 is connected with distribution board 4, for simulating ship power grid load;Control unit 7 is configured to coordinate the cooperative work of drive motor 1, shaft generator 3 and battery energy storage module 5, and perform multi-mode debugging task.The technical scheme of the application can solve at least the technical pain points including test environment limitation, insufficient working condition coverage, difficult data tracing and energy efficiency verification loss by modular design, multi-mode debugging and intelligent control technology. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is a kind of green new energy ship shaft generator land combined debugging system structural schematic diagram of the embodiment of the application.

[0041] In the figure, 1 is drive motor, 2 is transmission shaft assembly, 3 is shaft generator, 4 is distribution board, 5 is battery energy storage module, 6 is dry load module, 7 is control unit. DETAILED DESCRIPTION

[0042] To make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0043] As Figure 1 shown, Figure 1 It is a kind of green new energy ship shaft generator land combined debugging system structural schematic diagram of the embodiment of the application.

[0044] Figure 1 In the figure, a kind of green new energy ship shaft generator land combined debugging system, comprising: drive motor 1, transmission shaft assembly 2, shaft generator 3, distribution board 4, battery energy storage module 5, dry load module 6 and control unit 7.

[0045] The drive motor 1 is configured as the power output of analog ship main engine shaft;

[0046] The transmission shaft assembly 2 includes a short shaft 21 and an intermediate bearing 22, which are connected with the driving motor 1 and the shaft generator 3;

[0047] The power distribution board 4 is electrically connected with the shaft generator 3 and is configured to receive and distribute electric energy.

[0048] The battery energy storage module 5 is connected with the power distribution board 4 through a bidirectional converter 51 and is used for simulating energy storage and discharge.

[0049] The dry load module 6 is connected with the power distribution board 4 and is used for simulating the load of the ship power grid.

[0050] The control unit 7 is configured to coordinate the cooperative work of the driving motor 1, the shaft generator 3 and the battery energy storage module 5 and perform multi-mode debugging tasks.

[0051] In the embodiment of the application, the driving motor 1 simulates the power output of the shaft of the ship main engine, and the torque range covers 80%-120% of the actual working condition; the short shaft 21 and the intermediate bearing 22 of the transmission shaft assembly 2 form a power transmission chain, and the integrated vibration monitoring module 24 feeds back the mechanical state in real time; the shaft generator 3 receives the transmission power and generates electricity, which is output to the multi-bus power distribution board 4; the power distribution board 4: the main bus 41, the energy storage bus 42 and the load bus 43 realize the hierarchical management of electric energy; the battery energy storage module 5 supports the virtual synchronous generator VSG control mode, and the inertia parameter is adjustable; the dry load module 6 can simulate 0-2MW ship power grid load, including inductive / capacitive characteristics and harmonic injection function; the control unit 7 coordinates the cooperative work of multiple modules and performs test tasks such as sudden increase and sudden discharge, peak shaving and valley filling.

[0052] In the embodiment of the application, through the linkage of the driving motor and the load module, the full range working condition of the ship shaft generator from no load to overload is covered, and full working condition simulation is realized; land debugging replaces real ship testing, avoids the delay of ship construction caused by equipment failure, and can realize risk preposition; in addition, the technical scheme of the application supports shaft generator, energy storage and external power grid mixed mode, verifies complex energy management strategy, and realizes multi-power integration.

[0053] In another embodiment of the application, the driving motor 1 is a variable frequency speed regulation motor, the output torque range of which covers 80%-120% of the actual working condition of the shaft of the ship main engine, and the driving motor 1 is provided with a torque sensor 11 to feed back torque data to the control unit 7 in real time. The output torque accurately matches the actual working condition of the main engine shaft (±5% accuracy), and the real-time calibration of the torque sensor 11 can avoid the dynamic response distortion caused by the traditional constant speed motor and ensure the authenticity of the test data.

[0054] In another embodiment of the application, the transmission shaft assembly 2 further includes an elastic coupling 23 and a vibration monitoring module 24.

[0055] The elastic coupling 23 connects the driving motor 1 and the short shaft 21, and allows axial offset of ±2mm;

[0056] The vibration monitoring module 24 is integrated in the intermediate bearing 22, and is used for detecting the vibration frequency and amplitude of the transmission shaft, and triggering an alarm when the threshold value is exceeded.

[0057] In another embodiment of the application, the power distribution board 4 is configured as a multi-bus structure, comprising: a main bus 41, an energy storage bus 42 and a load bus 43;

[0058] The rated voltage of the main bus 41 is 690V±5%, and the output end of the shaft generator 3 is connected;

[0059] The voltage range of the energy storage bus 42 is 400V-800V, and the bidirectional converter 51 is connected;

[0060] The load bus 43 is configured with an adjustable impedance module 431, and the load capacity simulation range is 0-2MW.

[0061] In the embodiment of the application, the power distribution board 4 with a multi-bus structure can flexibly distribute electric energy and meet the test requirements of IMO (International Maritime Organization) energy efficiency regulations.

[0062] In another embodiment of the application, the battery energy storage module 5 comprises: a box-type lithium ion battery pack 52, a thermal management subsystem 53 and a SOC state of charge dynamic calibration module 54;

[0063] The total capacity of the box-type lithium ion battery pack 52 is ≥1MWh, and supports 0.5C charging and discharging rate;

[0064] The thermal management subsystem 53 maintains the battery temperature at 20-35℃ through liquid cooling circulation;

[0065] The error rate of the SOC state of charge dynamic calibration module 54 is ≤1%.

[0066] In another embodiment of the application, the control unit 7 executes at least three of the following debugging modes:

[0067] a) shaft generator-auxiliary generator parallel test: synchronize the frequency and phase of the shaft generator 3 and the simulated auxiliary generator, and realize grid connection when the deviation is ≤0.5Hz;

[0068] b) sudden load and sudden unloading test: apply or remove 50% rated load within 0.5 seconds, and record the voltage fluctuation range;

[0069] c) peak clipping and valley filling test: according to the preset load curve, control the battery energy storage module 5 to discharge during the peak period and charge during the valley period;

[0070] d) Multi-power coordinated testing: hybrid shaft generator 3, battery energy storage module 5 and external grid simulation source to optimize power distribution.

[0071] In the embodiment of the present invention, the shaft generator and the auxiliary generator are connected in parallel, with a frequency synchronization deviation of ≤0.5Hz and a phase difference of <2°, ensuring grid stability; in the sudden addition and unloading test, 50% load is loaded within 0.5 seconds, and the voltage recovery time is ≤200ms; in the peak shaving and valley filling test, charging and discharging are automatically switched according to the preset curve, and the energy storage utilization rate is increased by 30%. The technical solution of the present invention can cover the dynamic characteristics of the ship power grid and shorten the debugging period by more than 40%.

[0072] In yet another embodiment of the present invention, the joint debugging system further comprises: a data acquisition and analysis module 8;

[0073] The data acquisition and analysis module 8 is used to collect the power generation efficiency, harmonic distortion rate and insulation resistance data of the shaft generator 3 in real time; generate a commissioning report, marking the deviation of key parameters from the standard values; and predict the equipment life through a machine learning algorithm and output maintenance suggestions.

[0074] Among them, the data collection and analysis module 8 further reduces the risk of human misjudgment through data-driven decision-making.

[0075] In another embodiment of the present invention, the control unit 7 integrates a remote operation interface 71, supports receiving cloud debugging instructions and AR visualization guidance through 5G / fiber optic communication, displays shaft alignment errors and correction plans; and an emergency shutdown protocol, which cuts off power within 0.1 seconds when an insulation fault or overheating is detected.

[0076] In another embodiment of the present invention, the surface of the transmission shaft assembly 2 is coated with a wear-resistant coating 25 with a friction coefficient of ≤0.15, and is equipped with a shaft temperature infrared monitor 26 with an over-temperature threshold set at 80°C.

[0077] In another embodiment of the present invention, the battery energy storage module 5 supports a virtual synchronous generator (VSG) control mode, the simulated inertia parameter has an adjustable range of 0.5s-5s, and a damping coefficient of 0.1-2.0.

[0078] In the embodiment of the present invention, the control unit 7 sets the sudden load to 50% of the rated power (1MW); the drive motor 1 increases the torque to the set value within 0.5 seconds, and the output current of the shaft-belt generator 3 increases synchronously; the data acquisition module 8 records the voltage fluctuation range (allowing ±5%) and the frequency recovery time ≤200ms; the system automatically generates a report, marking the voltage overshoot and recovery stability rating.

[0079] The embodiment of the present application provides a kind of green new energy ship shaft generator land combined debugging system, comprising: drive motor 1, transmission shaft assembly 2, shaft generator 3, distribution board 4, battery energy storage module 5, dry load module 6 and control unit 7.Drive motor 1 is configured as the power output of ship main engine shaft;Transmission shaft assembly 2 includes short shaft 21 and intermediate bearing 22, connect drive motor 1 with shaft generator 3;Distribution board 4 is electrically connected with shaft generator 3, is configured to receive and distribute electric energy;Battery energy storage module 5 is connected with distribution board 4 by bidirectional converter 51, for simulating energy storage and discharge;Dry load module 6 is connected with distribution board 4, for simulating ship power grid load;Control unit 7 is configured to coordinate the cooperative work of drive motor 1, shaft generator 3 and battery energy storage module 5, and execute multi-mode debugging task.

[0080] The technical scheme of the present application can solve at least the technical problems of test environment limitations, insufficient working condition coverage, difficult data tracing and missing energy efficiency verification through modular design, multi-mode debugging and intelligent control technology.

[0081] The above is the preferred embodiment of the present application, it should be pointed out, for ordinary skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A green new energy ship shaft generator land joint debugging system, characterized in that: The combined debugging system comprises: a driving motor (1), a transmission shaft assembly (2), a shaft-belt generator (3), a distribution board (4), a battery energy storage module (5), a dry load module (6) and a control unit (7); The drive motor (1) is configured to simulate the power output of a main shaft of a ship; The transmission shaft assembly (2) includes a short shaft (21) and an intermediate bearing (22), and is connected to the drive motor (1) and the shaft generator (3); The distribution board (4) is electrically connected to the shaft generator (3) and is configured to receive and distribute electrical energy; The battery energy storage module (5) is connected to the power distribution board (4) via a bidirectional converter (51) for simulating energy storage and discharge; The dry load module (6) is connected to the switchboard (4) and is used to simulate the ship power grid load; The control unit (7) is configured to coordinate the cooperative work of the drive motor (1), the shaft generator (3) and the battery energy storage module (5), and to perform multi-mode debugging tasks.

2. A green new energy ship shaft generator land joint debugging system according to claim 1, characterized in that: The drive motor (1) is a variable frequency speed regulating motor, and its output torque range covers 80%-120% of the actual working conditions of the main engine shaft of the ship, and the drive motor (1) is equipped with a torque sensor (11) to feed back torque data to the control unit (7) in real time.

3. A green new energy ship shaft generator land joint debugging system according to claim 1, characterized in that: The transmission shaft assembly (2) further includes: an elastic coupling (23) and a vibration monitoring module (24); The elastic coupling (23) connects the drive motor (1) and the short shaft (21), allowing an axial offset of ±2 mm; The vibration monitoring module (24) is integrated in the intermediate bearing (22) and is used to detect the vibration frequency and amplitude of the transmission shaft, and trigger an alarm when the threshold is exceeded.

4. A green new energy ship shaft generator land joint debugging system according to claim 1, characterized in that: The distribution board (4) is configured as a multi-busbar structure, comprising: a main busbar (41), an energy storage busbar (42) and a load busbar (43); The rated voltage of the main busbar (41) is 690V±5%, and is connected to the output end of the shaft-driven generator (3); The energy storage bus (42) has a voltage range of 400V-800V and is connected to the bidirectional converter (51); The load bus (43) is equipped with an adjustable impedance module (431), and the load capacity simulation range is 0-2MW.

5. The green new energy ship shaft generator land joint debugging system according to claim 1 is characterized in that: The battery energy storage module (5) comprises: a box-type lithium-ion battery pack (52), a thermal management subsystem (53) and a SOC state of charge dynamic calibration module (54); The box-type lithium-ion battery pack (52) has a total capacity of ≥1MWh and supports a charge and discharge rate of 0.5C; The thermal management subsystem (53) maintains the battery temperature at 20-35°C through a liquid cooling cycle; The SOC (state of charge) dynamic calibration module (54) has an error rate of ≤1%.

6. A green new energy ship shaft generator land joint debugging system according to claim 1, characterized in that: The control unit (7) executes at least three of the following debugging modes: a) Shaft generator-auxiliary generator parallel test: The synchronous shaft generator (3) and the simulated auxiliary generator have a frequency and phase deviation of ≤0.5Hz to achieve grid connection; b) Sudden load test: Apply or remove 50% of the rated load within 0.5 seconds and record the voltage fluctuation range; c) Peak shaving and valley filling test: according to a preset load curve, the battery energy storage module (5) is controlled to discharge during peak hours and charge during valley hours; d) Multi-power coordinated testing: hybrid shaft generator (3), battery energy storage module (5) and external grid simulation source to optimize power distribution.

7. The green new energy ship shaft generator land joint debugging system according to claim 1 is characterized in that: The joint debugging system further includes: a data acquisition and analysis module (8); The data acquisition and analysis module (8) is used to collect the power generation efficiency, harmonic distortion rate and insulation resistance data of the shaft-belt generator (3) in real time; generate a commissioning report, mark the deviation of key parameters from standard values; and predict the equipment life through a machine learning algorithm and output maintenance suggestions.

8. The green new energy ship shaft generator land joint debugging system according to claim 1 is characterized in that: The control unit (7) is integrated with a remote operation interface (71), which supports receiving cloud debugging instructions and AR visual guidance via 5G / fiber optic communication, and displays axis alignment errors and correction solutions; and an emergency shutdown protocol that cuts power within 0.1 seconds when insulation fault or overheating is detected.

9. The green new energy ship shaft generator land joint debugging system according to claim 1, characterized in that: The surface of the transmission shaft assembly (2) is coated with a wear-resistant coating (25) with a friction coefficient of ≤0.15, and is equipped with a shaft temperature infrared monitor (26), with an over-temperature threshold set at 80°C.

10. The green new energy ship shaft generator land joint debugging system according to claim 1, characterized in that: The battery energy storage module (5) supports a virtual synchronous generator (VSG) control mode, with an adjustable range of simulated inertia parameters of 0.5s-5s and a damping coefficient of 0.1-2.0.

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