Testing system and testing method for braking working condition of deepwater power source

Abstract

The invention discloses a system and method for testing the braking condition of a deepwater power source, and relates to the technical field of underwater power source digital testing, and the system comprises a power simulation device which is used for simulating the power source to provide normal working kinetic energy for underwater equipment; the braking simulation device is used for simulating braking kinetic energy provided by a braking source for underwater equipment during energy consumption braking; the testing device is connected with the power simulation device and the braking simulation device, and is used for switching working kinetic energy provided by the power simulation device into braking kinetic energy provided by the braking simulation device during energy consumption braking, collecting electric parameters output by the braking simulation device after the braking kinetic energy supplies energy to underwater equipment, and transmitting the electric parameters to the testing device; and the system performance of the deepwater power source under the braking condition is verified by using the electrical parameters. Data reference is provided for the system design of the actual underwater power source, and the overall system performance of the underwater power source under the braking condition is further accurately verified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital testing of underwater power sources, in particular to a testing system and method for braking working conditions of a deep-water power source. BACKGROUND

[0002] There are many deficiencies in the existing testing methods for deep-sea special underwater power sources, which cannot comprehensively and accurately evaluate the overall system performance of the deep-water power source under complex working conditions. For example, in a system in which a long cable drives an underwater variable frequency motor to drive a hydraulic load, the current increases rapidly due to excessive braking, and the power source is insufficient. SUMMARY

[0003] Therefore, the testing system and method for braking working conditions of a deep-water power source are provided to solve the problem of how to verify the overall system performance of the deep-water power source under braking working conditions, and provide a reference for accurately evaluating the overall system performance of the deep-water power source under complex working conditions.

[0004] According to a first aspect, the embodiments of the present application provide a testing system for braking working conditions of a deep-water power source, comprising: a power simulation device configured to simulate a working power provided by the power source to underwater equipment for normal operation; a braking simulation device configured to simulate a braking power provided by the braking source to the underwater equipment during energy consumption braking; a testing device connected to the power simulation device and the braking simulation device, the testing device being configured to switch the working power provided by the power simulation device to the braking power provided by the braking simulation device during energy consumption braking, and collect electrical parameters output by the braking simulation device after the braking power is supplied to the underwater equipment, and verify the system performance of the deep-water power source under braking working conditions using the electrical parameters.

[0005] According to a second aspect, the embodiments of the present application provide a testing method for braking working conditions of a deep-water power source, which is applied to the testing system for braking working conditions of a deep-water power source as described above. The testing method comprises: controlling the testing device to switch the working power provided by the power simulation device to the braking power provided by the braking simulation device after the power simulation device operates for a preset time, and collecting electrical parameters output by the braking simulation device after the braking power is supplied to the underwater equipment, and verifying the system performance of the deep-water power source under braking working conditions using the electrical parameters.

[0006] Compared with the prior art, the present application has at least the following advantages or beneficial effects: The application provides a test system for braking working conditions of a deep-water power source, which simulates the working state of underwater equipment through a power simulation device, a braking simulation device and a test device, collects electric parameters output by the braking simulation device, evaluates the overall system performance of the power source system under the braking working condition by using the collected electric parameters, provides data reference for actual system design of the underwater power source, and realizes accurate verification of the overall system performance of the deep-water power source under the braking working condition.

[0007] The application provides a test method for braking working conditions of a deep-water power source, which switches working kinetic energy to braking kinetic energy after the power simulation device runs for a preset time, collects electric parameters output by the braking simulation device, analyzes the electric parameters to measure the system performance of the deep-water power source under the braking working condition, provides data reference for actual system design of the underwater power source, and realizes accurate verification of the overall system performance of the underwater power source under the braking working condition. BRIEF DESCRIPTION OF DRAWINGS

[0008] The features and advantages of the application will be more clearly understood through the following detailed description with reference to the accompanying drawings, which are shown schematically and should not be understood as any limitation to the application, and in which: Figure 1 A structure schematic diagram of the test system for braking working conditions of a deep-water power source provided by the application.

[0009] Figure 2 Another structure schematic diagram of the test system for braking working conditions of a deep-water power source provided by the application.

[0010] Figure 3 A circuit structure schematic diagram of a switching unit in the test system for braking working conditions of a deep-water power source provided by the application.

[0011] Figure 4 A flowchart of the test method for braking working conditions of a deep-water power source provided by the application.

[0012] Figure 5 A flowchart of steps S1 to S5 of the test method for braking working conditions of a deep-water power source provided by the application.

[0013] Figure 6 A structure schematic diagram of an electronic device provided by the application.

[0014] REFERENCE NUMERALS

[0015] 10 - power simulation device; 11 - brake simulation device; 12 - test device; 13 - load; 101 - variable frequency power supply; 111 - DC brake power supply; 112 - motor; 121 - switching unit; 122 - acquisition unit; 123 - control unit; 1211 - first input line; 1212 - second input line; 1213 - third input line; 1214 - fourth input line; 1215 - fifth input line; 1216 - first output line; 1217 - second output line; 1218 - third output line; 1219 - first switching switch; 12110 - second switching switch; 12111 - third switching switch; 124 - hydraulic unit; 125 - generator; 1241 - hydraulic pump; 1242 - hydraulic motor; 21 - controller; 20 - memory. DETAILED DESCRIPTION

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions 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 some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0017] To ensure the safety of underwater operation and the reliability and stability of underwater power source, the performance of the underwater power source needs to be tested, especially the performance evaluation of the underwater power source under extreme braking conditions (for example, high-speed or full-speed emergency stop, large-inertia load braking, bus power failure braking, low-speed high-torque braking, and the like). Based on this, the present application provides a test system and a test method for braking conditions of a deep-water power source. The test system and the test method are suitable for underwater equipment, and can simulate underwater complex braking conditions to accurately verify the overall system performance of the power source system under braking conditions.

[0018] The test system for braking conditions of a deep-water power source provided by the embodiments of the present application is shown in Figure 1 The test system for braking conditions of a deep-water power source provided by the embodiments of the present application is shown in

[0019] Continuing to refer to Figure 1The test system for the braking condition of the deep-water power source provided by the embodiment of the application comprises a power simulation device 10, a braking simulation device 11 and a test device 12, wherein the power simulation device 10 and the braking simulation device 11 are connected with the test device 12.

[0020] The power simulation device 10 is used for simulating the working kinetic energy provided by the power source to the underwater equipment in normal working.

[0021] The braking simulation device 11 is used for simulating the braking kinetic energy provided by the braking source to the underwater equipment in energy consumption braking.

[0022] The test device 12 is used for switching the working kinetic energy provided by the power simulation device 10 to the braking kinetic energy provided by the braking simulation device 11 in energy consumption braking, collecting the electric parameters output by the braking simulation device 11 after the braking kinetic energy is supplied to the underwater equipment (not shown), and verifying the system performance of the deep-water power source in the braking condition by using the electric parameters.

[0023] The test system for the braking condition of the deep-water power source provided by the embodiment of the application simulates the working state of the underwater equipment by setting the power simulation device 10, the braking simulation device 11 and the test device 12, collects the electric parameters output by the braking simulation device 11, evaluates the overall system performance of the power source system in the braking condition by using the collected electric parameters, provides data reference for the system design of the actual underwater power source, and further realizes accurate verification of the overall system performance of the underwater power source in the braking condition.

[0024] For further understanding of the test system for the braking condition of the deep-water power source provided by the application, refer to Figure 2 Fig. 2 is another structural schematic view of the test system for the braking condition of the deep-water power source provided by the embodiment of the application, in which the power simulation device 10, the braking simulation device 11, the test device 12 and a load 13 are further connected, wherein the load 13 comprises a hydraulic unit 124, a generator 125 and other equipment.

[0025] Specifically, the test system for the braking condition of the deep-water power source can be composed of the power simulation device 10, the braking simulation device 11, the test device 12 and the load 13, wherein the load 13 is connected with the power simulation device 10 and the braking simulation device 11, and the test device 12 is connected with the power simulation device 10 and the braking simulation device 11.

[0026] When the deep water power source braking condition test system is started, the power simulation device 10 is connected with the test device 12, the power simulation device 10 provides working kinetic energy to the load 13 to maintain normal operation of the load 13, and after a period of time of maintaining normal operation of the load 13, the deep water power source braking condition test system enters the energy consumption braking mode, at this time, the test device 12 disconnects the power simulation device 10, the test device 12 connects the braking simulation device 11, the braking simulation device 11 provides braking kinetic energy to the load 13, and after the load 13 is braked, the test device 12 collects the electric parameters output by the braking simulation device 11 to evaluate the overall system performance of the power source system in the braking condition, and further realizes accurate verification of the overall system performance of the underwater power source in the braking condition through simulation test.

[0027] In the embodiment, the power simulation device 10 comprises a variable frequency power supply 101 used for outputting three-phase voltage; the braking simulation device 11 comprises a direct current braking power supply 111 used for outputting direct current voltage, and the direct current braking voltage is 1100V, and in other embodiments, the direct current braking voltage can also be selected as other voltage values according to actual conditions.

[0028] And the electric motor 112 is further arranged in the power simulation device 10 and the braking simulation device 11, the electric motor 112 is selectively connected with the variable frequency power supply 101 or the direct current braking power supply 111, when the electric motor 112 is connected with the variable frequency power supply 101, the electric motor 112 receives the three-phase voltage output by the variable frequency power supply 101 and converts the three-phase voltage into working kinetic energy; when the electric motor 112 is connected with the direct current braking power supply 111, the electric motor 112 receives the direct current voltage output by the direct current braking power supply 111 and converts the direct current voltage into braking kinetic energy.

[0029] In the embodiment, the electric motor 112 in the power simulation device 10 and the braking simulation device 11 is the same electric motor 112, the electric motor 112 is selectively connected with the variable frequency power supply 101 or the direct current braking power supply 111 through the test device 12 to selectively output working function or braking kinetic energy. By arranging the power simulation device 10 and the braking simulation device 11, the braking condition of the deep water or underwater power source is simulated, the data collected in the simulation scene tends to the data collected in the actual scene, and the accuracy of data verification is ensured.

[0030] In the embodiment of the application, the test device 12 comprises a switching unit 121, an acquisition unit 122 and a control unit 123, wherein the switching unit 121 is selectively connected between the electric motor 112 and the variable frequency power supply 101 and the direct current braking power supply 111; the acquisition unit 122 is connected between the switching unit 121 and the electric motor 112; and the control unit 123 is connected with the switching unit 121 and the acquisition unit 122.

[0031] The switching unit 121 is used to switch working kinetic energy to braking kinetic energy, or to switch braking kinetic energy to working kinetic energy.

[0032] Optionally, the switching unit 121 can be a switching switch, such as a single-pole double-throw switch, circuit breaker, controllable switch, or selector.

[0033] Specifically, such as Figure 3 As shown, the testing system for the braking condition of the deep-sea power source includes: a frequency converter 101, a DC braking power supply 111, a motor 112, and a switching unit 121. The switching unit 121 may include: a first input line 1211, a second input line 1212, a third input line 1213, a fourth input line 1214, a fifth input line 1215, a first output line 1216, a second output line 1217, a third output line 1218, a first switching switch 1219, a second switching switch 12110, and a third switching switch 12111.

[0034] Specifically, the first end of the first input line 1211 is connected to the first phase of the frequency converter 101, the first end of the second input line 1212 is connected to the second phase of the frequency converter 101, the first end of the third input line 1213 is connected to the third phase of the frequency converter 101, the second end of the first input line 1211 is connected to the first end of the first switch 1219, the second end of the second input line 1212 is connected to the first end of the second switch 12110, and the second end of the third input line 1213 is connected to the first end of the third switch 12111.

[0035] The first end of the fourth input line 1214 is connected to the first end of the DC braking power supply 111, the first end of the fifth input line 1215 is connected to the second end of the DC braking power supply 111, the second end of the fourth input line 1214 is connected to the second end of the first switching switch 1219, and the second end of the fifth input line 1215 is connected to the second end of the second switching switch 12110.

[0036] The first end of the first output line 1216 is connected to the third end of the first switch 1219, the first end of the second output line 1217 is connected to the third end of the second switch 12110, the first end of the third output line 1218 is connected to the second end of the third switch 12111, and the second ends of the first output line 1216, the second output line 1217, and the third output line 1218 are all connected to the motor 112.

[0037] When the test system for the braking condition of the deep-water power source is working normally, the three-phase voltage output by the frequency converter 101 provides normal power to the underwater equipment. In the test system of the braking condition of the deep water power source, when the energy consumption braking is performed, the on-off of the first switch 1219, the second switch 12110 and the third switch 12111 is controlled, so that the three-phase electric voltage supply is switched to the DC braking voltage supply, thereby simulating the normal operation condition or the braking condition of the deep water power source / underwater equipment, making the data collected in the simulation scene tend to the data collected in the actual scene, and ensuring the accuracy of data verification.

[0038] Continuing to refer to Figure 2 As shown in Figure 1 The test system of the braking condition of the deep water power source further includes: The acquisition unit 122 is configured to acquire the electric parameters output by the switching unit 121.

[0039] In some embodiments, the acquisition unit 122 is arranged between the motor 112 and the switching unit 121, and the acquisition unit 122 can be a sampling resistor, which is used to calculate the electric parameters such as power by using the resistance value.

[0040] The control unit 123 is configured to control the switching unit 121 to switch the working kinetic energy to the braking kinetic energy, or switch the braking kinetic energy to the working kinetic energy, and verify the system performance of the deep water power source in the braking condition by using the electric parameters.

[0041] In the embodiment, the control unit 123 can be a controller such as FPGA, single-chip microcomputer, PLC or the like composed of control chips.

[0042] In order to realize intelligent control, the acquisition unit 122 and the control unit 123 can be arranged to monitor the electric parameters of the operation condition or the working mode of the test system and the underwater equipment, and the first switch 1219, the second switch 12110 and the third switch 12111 are intelligently controlled by using the monitored electric parameters, so as to accurately switch the normal condition and the braking condition, thereby making the data collected in the simulation scene tend to the data collected in the actual scene, and ensuring the accuracy of data verification.

[0043] The test system of the braking condition of the deep water power source provided in the embodiments of the present application is further connected with a hydraulic unit 124 and a generator 125, in addition to the devices, units or components provided in the above embodiments.

[0044] The hydraulic unit 124 is connected with the motor 112, and the hydraulic unit 124 is configured to convert the working kinetic energy or the braking kinetic energy output by the motor 112 into mechanical energy; the generator 125 is connected with the hydraulic unit 124, and the generator 125 is configured to convert the mechanical energy into electric energy for powering the underwater equipment.

[0045] In the embodiment, in order to simulate the real working condition of the underwater environment as much as possible, the load is digitized as the hydraulic unit 124 and the generator 125, and the motor 112 converts the electric energy into mechanical energy and transmits to the hydraulic unit 124.

[0046] In the embodiment, the hydraulic unit 124 and the motor 112 are used as part of the load to simulate the normal working of the underwater equipment.

[0047] Optionally, the hydraulic unit 124 comprises a hydraulic pump 1241 and a hydraulic motor 1242.

[0048] Optionally, the motor 112 and the hydraulic motor 1242 are connected with a frequency converter, and the frequency converter is used to adjust the rotating speed of the motor 112 and the hydraulic pump 1241.

[0049] In the embodiment, the motor 112 and the hydraulic pump 1241 are coaxial, so when the rotating speed of the motor 112 and the hydraulic pump 1241 is adjusted by using the frequency converter, the output flow and pressure of the hydraulic pump 1241 are changed by adjusting the rotating speed of the hydraulic pump 1241, so as to realize the power control of the underwater equipment; the accurate control of the power source system is realized by adjusting the rotating speed of the motor 112, so as to achieve the purpose of energy saving and high efficiency.

[0050] Optionally, in order to ensure the stable working of the test system and ensure the normal working of the test system, a filter unit is arranged between the connection line of the frequency conversion power supply 101 and the motor 112.

[0051] Optionally, after the frequency conversion power supply 101 is filtered by the filter unit in actual use, the long-distance transmission needs to be realized through the cable, so when the test system is tested, the cable model is additionally designed to simulate the cable environment used in the underwater environment, so as to make the final test result more real.

[0052] In the embodiment, when the hydraulic unit 124 and the generator 125 work normally, the frequency conversion power supply 101 transmits three-phase voltage to the motor 112, in order to improve the quality of the output electric energy of the frequency conversion power supply 101, the frequency conversion power supply 101 can be connected with a filter unit, and the three-phase voltage output by the frequency conversion power supply 101 is filtered to remove the noise or interference, and then the output electric energy is provided to the motor 112.

[0053] It should be noted that the firewire and zero line in the three-phase voltage of the frequency conversion power supply 101 correspond to the positive and negative poles of the direct-current braking power supply 111, so that the switching unit 121 realizes the working condition switching.

[0054] Optionally, the generator 125 can be connected to a three-phase resistance load to receive the electrical energy output by the generator 125, and the generator 125 can also be connected to a four-quadrant frequency converter to feed the generated electrical energy back to the power grid, so that the generator 125 is used as a load of the hydraulic motor 1242, thereby achieving the purpose of energy saving while testing.

[0055] In some embodiments, the power simulation device 10 includes a variable frequency power supply 101 and an electric motor 112, the variable frequency power supply 101 generates electricity and transmits an electrical signal to the electric motor 112.

[0056] The power simulation device 10 is used to simulate the power supply for underwater equipment. In this application, in order to simulate the real working conditions of the underwater environment as much as possible, the hydraulic unit 124 is used to simulate the large starting load of the underwater equipment in the underwater environment, and the electric motor 112 converts electrical energy into mechanical energy and transmits it to the hydraulic unit 124. Figure 2

[0057] Due to the high pressure and low temperature of deep water in a complex underwater environment, the viscosity of hydraulic oil is large, and the adverse effects of high pressure and large viscosity of hydraulic oil are that the starting load of the electric motor is large, which leads to starting difficulty. Therefore, the hydraulic unit 124 is used to simulate the load to achieve the simulation of large load starting.

[0058] Large load starting includes large load and large rotational inertia. During the starting stage of the electric motor 112, the electric motor 112 cannot provide a large load when it is not rotating. Therefore, the hydraulic unit 124 is used as the load of the entire underwater power source, including the hydraulic pump 1241 and the hydraulic motor 1242. The hydraulic pump 1241 receives mechanical energy output by the electric motor 112 and converts it into hydraulic energy, and the hydraulic motor 1242 converts hydraulic energy into mechanical energy. When in use, the viscosity of the hydraulic oil is increased to increase the rotational inertia during starting, thereby simulating the problem of large starting load in the actual underwater environment. After simulating the load of the underwater power source, the digital test system provided in this application can be used to test and verify the underwater power source.

[0059] ​In some embodiments, the power simulation device 10 and the brake simulation device 11 can also be a power supply system composed of a direct current power supply, an inverter, a umbilical cable unit and a motor, and in actual underwater action, the hydraulic load is driven by the motor driven by the umbilical cable, and due to the cable length of the umbilical cable being hundreds of meters or even thousands of meters, the cable resistance increases, which may cause insufficient voltage of the motor, especially when the motor is started or under heavy load. Therefore, in order to consider the influence of long cable on the underwater power source, the direct current power supply outputs power through the inverter and inputs variable frequency power to the motor through the umbilical cable unit, wherein the umbilical cable unit adopts an existing cable model suitable for underwater environment, and the parameters thereof can be set and modified by using existing software. Users can test whether the deep water power source can stably cope with the brake condition under different cable models.

[0060] In some embodiments, the brake simulation device can include a direct current brake power supply and a brake resistor, which are used to consume the brake energy when the motor brakes, thereby simulating the brake condition.

[0061] In some embodiments, in addition to deep water high pressure and low temperature, the deep water (underwater) environment can also include flow velocity disturbance, complex underwater geological environment, temperature change of underwater environment, etc. In order to simulate the real underwater environment, the test system can introduce a random disturbance signal to simulate the underwater environment and realize digital testing of the deep water power source. The flow velocity disturbance of the water flow will cause current fluctuation and load fluctuation, so in this application, the impact of water flow can be simulated by simulating current fluctuation and load fluctuation.

[0062] In some embodiments, a random disturbance signal can be generated by a hydraulic unit to simulate load fluctuation, and a variable resistor can be connected to the generator to apply a random disturbance signal to simulate the disturbance of the load size caused by the sea temperature or external environment. Load fluctuation can be simulated by changing the resistance value of the variable resistor.

[0063] The temperature change of the underwater environment will cause the resistance value of the internal resistance of the direct current brake power supply or the brake resistor to change, and the power output of the direct current brake power supply or the resistance power level will change, so the influence of temperature change on energy consumption brake during underwater braking can be simulated according to the change of power through the brake source.

[0064] When the brake source is a direct current brake power supply, the internal resistance of the direct current brake power supply is related to the underwater temperature, and a low random signal is generated to simulate the underwater low temperature and instability. Therefore, when the random signal acts on the direct current brake power supply, the internal resistance will change, and the power output of the direct current brake power supply will also change (for example, when the temperature is low, the internal resistance increases, and the output power decreases). Therefore, the control platform can simulate the influence of underwater temperature change on energy consumption brake during underwater braking.

[0065] When the braking source is a braking resistor, the resistance of the braking resistor is related to the underwater temperature, and the temperature generates a low random signal to simulate the underwater low temperature and instability. Thus, when the random signal acts on the braking resistor, the resistance of the braking resistor changes, and when the resistance changes, the resistance power level of the braking resistor also changes. Therefore, the control platform can simulate the influence of the underwater temperature change on the energy consumption braking during underwater braking.

[0066] When the braking source is a series connection of a direct current braking power supply and a braking resistor, the resistance of the braking resistor and the internal resistance of the direct current braking power supply are related to the underwater temperature, and the temperature generates a low random signal to simulate the underwater low temperature and instability. Thus, when the random signal acts on the braking resistor and the direct current braking power supply, the resistance of the braking resistor and the direct current braking power supply changes, and when the resistance changes, the power output of the direct current braking power supply also changes. Therefore, the control platform can simulate the influence of the underwater temperature change on the energy consumption braking during underwater braking.

[0067] After the energy consumption braking, the electric parameters related to the deep water power source (for example, three-phase voltage, three-phase current, speed, back electromotive force, electromagnetic torque, direct current bus voltage, braking time, braking current and the like) can be collected by the collection unit, that is, the electric parameters related to the direct current power supply, the inverter, the umbilical cable unit and the motor. According to the electric parameters, it can be analyzed that where the problem of the underwater power source appears under the braking condition, data reference is provided for the design of the deep water power source system, and reliable basis is provided for the optimization and improvement of the performance of the deep water power source system. When the problem occurs, the engineer can adjust the parameters for retesting until a stable, safe and reliable underwater power source system is tested.

[0068] Specifically, under the braking condition, it can be observed whether the speed of the motor can be successfully reduced, and the process is without reverse rotation and without strong vibration, to verify whether the braking is stable and effective.

[0069] By observing whether the current (for example, stator three-phase current, cable front current (that is, the current input to the umbilical cable unit), cable rear current (that is, the current output by the umbilical cable unit)) is within the set range, whether the current is overcurrent, and whether the fluctuation is too large, it can be verified whether the current is within the safe range.

[0070] By observing whether there is voltage across the braking resistor and whether the current actually flows into the resistor, it can be verified whether the braking energy is effectively dissipated.

[0071] By observing whether the braking time, the direct current bus voltage and the maximum current meet the expectations or are within the design specification, it can be verified whether the electrical indicators meet the requirements.

[0072] The test method for the braking condition of the deep water power source provided in the present application, like Figure 4As shown, the method can be applied to the test system for the braking condition of the deep water power source provided in the above embodiments, and the test system comprises a power simulation device, a braking simulation device, and a test device. The test device can be stored in the form of control code in the control unit or storage device of the test device, and then read and called by the control chip in the control unit to cooperate with the corresponding hardware to realize the corresponding test method. Specifically, the test method for the braking condition of the deep water power source can comprise: S01, after the power simulation device runs for a preset time, the test device switches the working kinetic energy provided by the power simulation device to the braking kinetic energy provided by the braking simulation device.

[0073] S02, after the braking kinetic energy supplies energy to the underwater equipment, the electric parameters output by the braking simulation device are collected, and the system performance of the deep water power source under the braking condition is verified by using the electric parameters.

[0074] The test method for the braking condition of the deep water power source provided in the embodiments of the present application switches the working kinetic energy to the braking kinetic energy after the power simulation device runs for a preset time, then collects the electric parameters output by the braking simulation device, and analyzes the electric parameters to measure the system performance of the deep water power source under the braking condition, so as to provide data reference for the system design of the actual underwater power source, and further realize accurate verification of the overall system performance of the underwater power source under the braking condition.

[0075] In some embodiments, the electric parameters include at least one of current, voltage, and power, such as Figure 5 As shown, the system performance of the deep water power source under the braking condition is verified by using the electric parameters, and the steps can be: S1, after the power simulation device runs for a preset time, the test device switches the working kinetic energy provided by the power simulation device to the braking kinetic energy provided by the braking simulation device.

[0076] S2, after the braking kinetic energy supplies energy to the underwater equipment, the electric parameters output by the braking simulation device are collected, and the system performance of the deep water power source under the braking condition is verified by using the electric parameters.

[0077] S3, whether the parameter values of the current, voltage, and power meet the threshold range is judged.

[0078] S4, if the threshold range is met, it is determined that the system performance of the deep water power source under the current braking condition is stable.

[0079] S5, if the threshold range is not met, the power simulation device or the braking simulation device is adjusted according to the electric parameters until the electric parameters output by the power source under the current braking condition meet the threshold range.

[0080] In this embodiment of the application, before performing energy-consuming braking on the underwater power source / underwater equipment, the underwater power source / underwater equipment needs to be running normally, such as for 2.5 seconds, before entering the energy-consuming braking operation / condition. This is done to ensure the accuracy of the system performance test under braking conditions.

[0081] In some embodiments, the current (e.g., stator three-phase current, cable front current (i.e., the current input to the umbilical cable unit), cable rear current (i.e., the current output by the umbilical cable unit)) is determined to be within a set range, whether there is overcurrent, and whether the fluctuation is too large, thus verifying whether the current falls within the safe range; the voltage is determined to confirm whether the current actually flows into the resistor, thus verifying whether the braking energy is effectively dissipated; and the braking time, DC bus voltage, and maximum current value are determined to be in line with expectations or within the design specifications, thus verifying whether the electrical indicators meet the requirements.

[0082] In some embodiments, the threshold range is determined by the user based on the actual application scenario and is not limited here.

[0083] In some embodiments, when the measured electrical parameters do not meet the threshold range, the power simulation device or braking simulation device can be modulated and adjusted to simulate how parameters are adjusted under different braking conditions to ensure the stable operation of the deep-water power source (underwater power source).

[0084] Optionally, the test conditions provided in this embodiment, in addition to braking conditions, may also include other conditions such as sudden load changes and stall. The test method provided in this application can use electrical parameters to verify the performance of other conditions. The test method provided in this application uses the acquisition of electrical parameters to verify the performance of the underwater power source under braking conditions in complex underwater environments, providing data reference for power source system design and performance optimization.

[0085] This invention also provides an electronic device, such as... Figure 6 As shown, the electronic device may include a controller 21 and a memory 20, wherein the controller 21 and the memory 20 may be connected via a bus or other means. Figure 6 Taking the example of a connection between China and Israel via a bus.

[0086] The controller 21 can be a central processing unit (CPU). The controller 21 can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic components, discrete hardware components, or a combination thereof.

[0087] The memory 20, as a non-transitory computer readable storage medium, can be used to store non-transitory software programs, non-transitory computer executable programs and modules, such as the program instructions / modules / devices corresponding to the test method of the braking condition of the deep water power source in the embodiments of the present application (for example, the power simulation device 10, the braking simulation device 11, and the test device 12 shown in the embodiments). Figure 1 The controller 21 performs various function applications and data processing of the controller 21 by running the non-transitory software programs, instructions and modules stored in the memory 20, that is, implements the test method of the braking condition of the deep water power source in the above-mentioned method embodiments.

[0088] The memory 20 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and application programs required by at least one function; the data storage area can store data created by the controller 21, etc. In addition, the memory 20 can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory 20 can optionally include a memory remotely arranged with respect to the controller 21, and these remote memories can be connected to the controller 21 through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0089] The one or more modules are stored in the memory 20, and when executed by the controller 21, perform the test method of the braking condition of the deep water power source in the embodiments as shown. Figures 4-5 The test method of the braking condition of the deep water power source in the embodiments as shown.

[0090] The above-mentioned electronic device specific details can be understood by referring to the corresponding related descriptions and effects in the embodiments as shown, which will not be described here. Figures 4-5 The above-mentioned electronic device specific details can be understood by referring to the corresponding related descriptions and effects in the embodiments as shown, which will not be described here.

[0091] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by computer program instructions related to hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiment methods. Among them, the storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid state drive (SSD), etc. The storage medium can also include a combination of the above-mentioned types of memories.

[0092] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A test system for a braking condition of a deep water power source, characterized by, The test system comprises: a power simulation device for simulating a power source to provide normal working power to the underwater equipment; a braking simulation device for simulating a braking source to provide braking power to the underwater equipment in energy consumption braking; a test device connected with the power simulation device and the braking simulation device, the test device being configured to switch the working power provided by the power simulation device to the braking power provided by the braking simulation device in energy consumption braking, and collect electrical parameters output by the braking simulation device after the braking power is supplied to the underwater equipment, and verify the system performance of the deep water power source in braking condition by using the electrical parameters.

2. The test system for braking condition of the deep water power source according to claim 1, wherein the power simulation device comprises a variable frequency power supply for outputting three-phase voltage; the braking simulation device comprises a direct current braking power supply for outputting direct current voltage; the power simulation device and the braking simulation device both comprise: an electric motor selectively connected with the variable frequency power supply or the direct current braking power supply, configured to receive the three-phase voltage output by the variable frequency power supply and convert the three-phase voltage into the working power when the electric motor is connected with the variable frequency power supply, or receive the direct current voltage output by the direct current braking power supply and convert the direct current voltage into the braking power when the electric motor is connected with the direct current braking power supply.

3. A test system for a braking condition of a deep water power source according to claim 2, characterized in that, the test device comprises: a switching unit selectively connected between the electric motor and the variable frequency power supply and the direct current braking power supply, configured to switch the working power to the braking power, or switch the braking power to the working power; a collection unit connected between the switching unit and the electric motor, configured to collect electrical parameters output by the switching unit; a control unit connected with the switching unit and the collection unit, configured to control the switching unit to switch the working power to the braking power, or switch the braking power to the working power, and obtain the electrical parameters to verify the system performance of the deep water power source in braking condition.

4. The test system of a braking condition of a deep water power source according to claim 3, characterized by, the switching unit comprises a first input line, a second input line, a third input line, a fourth input line, a fifth input line, a first output line, a second output line, a third output line, a first switching switch, a second switching switch, and a third switching switch; a first end of the first input line is connected with a first phase of the variable frequency power supply, a first end of the second input line is connected with a second phase of the variable frequency power supply, and a first end of the third input line is connected with a third phase of the variable frequency power supply, a second end of the first input line is connected with a first end of the first switching switch, a second end of the second input line is connected with a first end of the second switching switch, and a second end of the third input line is connected with a first end of the third switching switch; The first end of the fourth input line is connected with the first end of the DC braking power supply, the first end of the fifth input line is connected with the second end of the DC braking power supply, the second end of the fourth input line is connected with the second end of the first switch, and the second end of the fifth input line is connected with the second end of the second switch. The first end of the first output line is connected with the third end of the first switch, the first end of the second output line is connected with the third end of the second switch, the first end of the third output line is connected with the second end of the third switch, and the second end of the first output line, the second end of the second output line and the second end of the third output line are all connected with the motor.

5. The test system for a braking condition of a deep water power source according to claim 2, characterized in that, Further comprising: a hydraulic unit connected with the motor, for converting the working kinetic energy or braking kinetic energy output by the motor into mechanical energy; a generator connected with the hydraulic unit, for converting the mechanical energy into electric energy for powering the underwater equipment.

6. A test system for a braking condition of a deep water power source according to claim 5, characterized in that, The hydraulic unit comprises a hydraulic pump and a hydraulic motor.

7. A test system for a braking condition of a deep water power source according to claim 6, characterized in that, The test system further comprises a frequency converter connected with the motor and the hydraulic motor, for adjusting the rotating speed of the motor and the hydraulic pump.

8. The test system of braking conditions of deep water power sources according to claim 2, characterized in that, The test system further comprises a filter unit arranged between the connection line of the variable frequency power supply and the motor.

9. A method of testing a braking condition of a deep water power source, characterized by, The test method for the braking working condition of the deepwater power source is applied to the test system for the braking working condition of the deepwater power source according to any one of claims 1-8, and the test method for the braking working condition of the deepwater power source comprises: After the power simulation device operates for a preset time, the test device is controlled to switch the working kinetic energy provided by the power simulation device to the braking kinetic energy provided by the braking simulation device; After the braking kinetic energy powers the underwater equipment, the electric parameters output by the braking simulation device are collected, and the electric parameters are used to verify the system performance of the deepwater power source under the braking working condition.

10. The method of testing a braking condition of a deep water power source of claim 9, wherein, The electric parameters comprise at least one of current, voltage and power, and the verification of the system performance of the deepwater power source under the braking working condition by using the electric parameters comprises: determining whether the parameter values of the current, voltage and power meet a threshold range; if the threshold range is met, it is determined that the system performance of the deepwater power source under the current braking working condition is stable.

Images