CN112994549A - Stabilizing device, method and medium for full-sea-depth ROV power supply - Google Patents
Stabilizing device, method and medium for full-sea-depth ROV power supply Download PDFInfo
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- CN112994549A CN112994549A CN202110211877.5A CN202110211877A CN112994549A CN 112994549 A CN112994549 A CN 112994549A CN 202110211877 A CN202110211877 A CN 202110211877A CN 112994549 A CN112994549 A CN 112994549A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 230000033228 biological regulation Effects 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000004590 computer program Methods 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/002—Flicker reduction, e.g. compensation of flicker introduced by non-linear load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
Abstract
The invention provides a stabilizing device, a stabilizing method and a stabilizing medium for a full-sea deep ROV power supply, and relates to the technical field of stabilization of the full-sea deep ROV power supply, wherein the method comprises the following steps: the system comprises a three-phase step-up transformer, a tap switch, a voltage regulation controller, an umbilical cable, a hydraulic power source and a voltage monitoring module, wherein the three-phase step-up transformer is connected with the tap switch, and the tap switch is also respectively connected with the voltage regulation controller and the umbilical cable; the pressure regulating controller is connected with the main control console, the main control console adjusts the pressure regulating controller through setting for signals, the umbilical cable is connected with the hydraulic power source, and the hydraulic power source is further connected with the voltage monitoring module. The invention can adjust the output voltage of the three-phase step-up transformer by switching the tap of the three-phase step-up transformer for power supply through the on-load tap-changer, solves the problems of difficult starting and voltage fluctuation caused by ultra-long distance power supply, and improves the power supply quality of the full-sea deep ROV.
Description
Technical Field
The invention relates to the technical field of stabilization of full-sea-depth ROV power supplies, in particular to a device, a method and a medium for stabilizing a full-sea-depth ROV power supply.
Background
The full-sea-depth ROV is an unmanned remote operation type submersible with the submergence depth reaching ten thousand meters. The power supply provides power for the operation type ROV. The umbilical cable provides power supply, signal channel and bearing capacity for the ROV.
The voltage of a power grid is reduced due to the increase of the electricity consumption of the ROV in the full sea depth, and the voltage can be stabilized within a certain range under the condition of no power outage through an on-load voltage regulating system consisting of a tap switch and a regulating transformer. Three-phase power supply is transported to load through over ten thousand meters of extra long distance, and considerable line voltage drop is generated due to the existence of conductor resistance. The hydraulic power source of the full-sea deep ROV usually needs tens of kW, even if a high-voltage power supply (3000VAC) is adopted, the line voltage drop can reach hundreds of volts (500V to 700V), and when the hydraulic power source is started, the starting current is 5-7 times of the rated current, and the generated line voltage drop is larger.
In view of the above prior art, the following problems will arise from severe line voltage drops: 1. when the motor is started, the voltage transmitted to the hydraulic power source is too low, the motor cannot obtain enough starting torque, the motor is in a locked-rotor state, and strong locked-rotor current can damage power supply equipment, cables and the motor; 2. when the load current changes, the voltage drop of the line causes the voltage at the load end to fluctuate violently, which causes unstable rotation speed of the hydraulic power source, fluctuation of output torque, reduced efficiency and poor operation performance, and seriously affects the normal work of the ROV; 3. the power factor decreases and the utilization of the supply power decreases.
Disclosure of Invention
In view of the defects in the prior art, the present invention provides a stabilizing device, method and medium for a full-sea deep ROV power supply, so as to solve the above existing problems.
According to the stabilizing device, the method and the medium of the full-sea-depth ROV power supply provided by the invention, the scheme is as follows:
in a first aspect, there is provided a stabilizing device for a full-sea deep ROV power supply, the device comprising:
three-phase step-up transformer: providing power for a hydraulic power source, and adjusting power supply voltage according to the change of a load;
a tap switch: the voltage regulation method has the advantages that the tap in the three-phase step-up transformer for power supply is switched to realize voltage regulation under the condition that load current is not interrupted;
a voltage regulating controller: controlling the tap changer according to an internally generated deviation signal;
umbilical cable: providing a power supply, a signal channel and bearing capacity for the full-sea-depth ROV;
a hydraulic power source: receiving electric energy transmitted by an umbilical cable for driving, and providing power for equipment including a propeller and a manipulator carried by the full-sea-depth ROV;
a voltage monitoring module: monitoring the operating voltage of the hydraulic power source, and feeding back the voltage value of the operating voltage to the voltage regulating controller;
the three-phase step-up transformer is connected with the tap switch, and the tap switch is also respectively connected with the voltage regulation controller and the umbilical cable;
the pressure regulating controller is connected with a main console, the main console regulates the pressure regulating controller through setting signals, the umbilical cable is connected with the hydraulic power source, and the hydraulic power source is further connected with the voltage monitoring module.
Preferably, the tap switch and the umbilical cable and the hydraulic power source are connected through optical fibers.
Preferably, be connected with first optical transceiver between umbilical and the hydraulic power source for turn into optical signal with the signal of telecommunication, the monitoring signal that the hydraulic power source sent is received to voltage monitoring module, feeds back the voltage value to the pressure regulating controller through feedback signal.
Preferably, a second optical transceiver is connected between the tap switch and the umbilical cable and used for converting optical signals into electric signals, and the voltage regulation controller receives feedback signals of the voltage monitoring module.
Preferably, the voltage regulation controller receives a voltage setting signal sent by the main control console and a feedback signal of the voltage monitoring module, a comparator in the voltage regulation controller generates a deviation signal, and a driving mechanism of the tap switch is controlled according to the deviation signal, so that a tap of a three-phase step-up transformer for supplying power is switched, and the voltage regulation of the power supply is realized.
Preferably, the input voltage of the three-phase step-up transformer is 380V.
Preferably, the design power of the three-phase step-up transformer is 80 KW; the design power of the hydraulic power source is 45 KW.
Preferably, the tap changer is an on-load tap changer.
In a second aspect, there is provided a method of stabilizing a full-sea deep ROV power supply, the method comprising:
the method comprises the following steps: the three-phase power supply output by the three-phase step-up transformer is conveyed to a hydraulic power source through an umbilical cable to provide power for the full-sea deep ROV carrying equipment;
step two: the voltage monitoring module monitors the operating voltage of the hydraulic power source and feeds a feedback signal of a voltage value back to the voltage regulating controller through an umbilical cable;
step three: the feedback signal is compared with a voltage setting signal sent by the main console in the voltage regulating controller to generate a deviation signal, a driving mechanism of a tap switch is controlled according to the deviation signal, a tap of the three-phase step-up transformer is switched, the voltage regulation of the power supply is realized, and the power supply is stabilized in a required range.
Compared with the prior art, the invention has the following beneficial effects:
1. the core of the full-sea-depth ROV hydraulic power source is an alternating-current asynchronous motor, and when the alternating-current asynchronous motor is directly started through a ten-thousand-meter umbilical cable under the action of the device under full pressure, the starting current can reach multiple times of the rated current. When the capacity of the motor is relatively large, the starting current can cause the voltage of the full-sea-depth ROV power supply equipment to drop sharply, and the normal operation of other equipment in the full-sea-depth ROV power supply equipment is influenced. When the device is selected to have small voltage fluctuation, the influence on the running alternating current of other equipment in the full-sea-depth ROV power supply equipment is small;
2. the impact of a large current directly started by a high-power oil pump motor equipped with a full-sea-depth ROV hydraulic source under the condition of not using a power supply stabilizing device on the whole operation system is almost similar to the impact of a three-phase short circuit on a power grid, power oscillation is often caused, and the operation system loses stability. Secondly, unstable starting current which is not stably and directly transmitted contains a large amount of higher harmonics, and the high-frequency harmonics can cause high-frequency resonance with parameters of a full-sea deep ROV power supply system, so that faults such as relay protection misoperation, automatic control failure and the like are caused. The use of the device can reduce the use risk. The stability of the whole full-sea-depth ROV power supply system is improved;
3. for the full-sea-depth ROV body, joule heat generated by large current repeatedly acts on the external insulation of the wire, so that the insulation is accelerated to age and the service life is reduced. The mechanical force generated by the large current causes the wires to rub against each other, reducing the insulation life. And the shaking phenomenon of the contact can generate operation overvoltage on a stator winding of the motor when the high-voltage switch is switched on, sometimes the operation overvoltage reaches more than 5 times of the external voltage, and the high overvoltage can cause great damage to the insulation of the motor. When the device is used for starting the oil pump motor, the maximum current can be greatly reduced, the instant heating amount is reduced, and the insulation life can be greatly prolonged; and the terminal voltage of the motor of the high-power oil pump can be well matched with proper starting voltage, and partial overvoltage damage or insufficient voltage can be avoided. By using the device, the damage to the motor insulation can be reduced, the service life of the motor is prolonged greatly, the service life of the equipment is prolonged greatly, and the overall reliability of the equipment is ensured greatly while the effect of saving cost is achieved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The embodiment of the invention provides a stabilizing device of a full-sea-depth ROV power supply, which comprises a three-phase step-up transformer, a tap switch, a voltage regulating controller, an umbilical cable, a voltage monitoring module and a hydraulic power source, and is shown in figure 1.
The three-phase step-up transformer is a component for providing power for a hydraulic power source, the input voltage is 380V, the output is provided with 2800V, 2900V, 3000V, 3100V, 3200V, 3300V, 3400V, 3500V, 3600V, 3700V and other multi-stage taps, the power supply voltage can be adjusted according to the change of the load, and the design power of the three-phase step-up transformer is 80 kW. The tap changer is used for switching the tap of the three-phase step-up transformer to realize voltage regulation under the condition of not interrupting load current, and the on-load tap changer is used for realizing transition by using a resistor in the process of changing the tap, so that the circulating current during the transition is limited, and the voltage regulation under the condition of uninterrupted operation of the ROV in the full sea depth is realized.
The voltage regulation controller has a voltage regulation control function, receives a voltage setting signal sent by the main control console, receives a feedback signal of the voltage monitoring module, generates a deviation signal through a comparator in the voltage regulation controller, and controls a driving mechanism of the tapping switch according to the deviation signal, so that a tap of the three-phase step-up transformer is switched, and the voltage regulation of the power supply is realized.
Umbilical cable: the comprehensive cable provides a power supply, a signal channel and bearing capacity for the full-sea-depth ROV. The hydraulic power source comprises a motor and a hydraulic pump, receives electric energy transmitted by an umbilical cable for driving, and provides power for equipment including a propeller and a manipulator carried by the full-sea-depth ROV, and the design power of the hydraulic power source is 45KW in the embodiment. A voltage monitoring module: and the hydraulic power source is responsible for monitoring the operating voltage of the hydraulic power source.
The three-phase step-up transformer is electrically connected with the tap switch, the tap switch is further respectively connected with the voltage regulation controller and the umbilical cable, and the tap switch is connected with the umbilical cable through optical fibers. The pressure regulating controller is electrically connected with a main console, an umbilical cable is connected with a hydraulic power source, the umbilical cable and the hydraulic power source are also connected through optical fibers, and the hydraulic power source is also connected with a voltage monitoring module.
Be connected with first optical transmitter and receiver between umbilical and the hydraulic power source for turn into the light signal with the signal of telecommunication, voltage monitoring module receives the monitoring signal who sends from the hydraulic power source, and simultaneously, be connected with second optical transmitter and receiver between tap switch and the umbilical, be used for turning into the signal of telecommunication with the light signal, voltage monitoring module feeds back the feedback signal of magnitude of voltage to the pressure regulating controller through first optical transmitter and receiver, the optic fibre of second optical transmitter and umbilical, the feedback signal of voltage monitoring module is received to the pressure regulating controller.
When the device is in operation, a three-phase power supply output by the three-phase step-up transformer is conveyed to a hydraulic power source through an umbilical cable, so that power is provided for the full-sea deep ROV carrying equipment. The voltage monitoring module can monitor the operating voltage of the hydraulic source in real time, feed back the operating voltage to the voltage regulation controller through the umbilical cable, compare with a voltage setting signal sent by the main control console in the voltage regulation controller, generate a deviation signal accordingly, control a driving mechanism of a tap switch according to the deviation signal, switch taps of the three-phase step-up transformer, and realize the voltage regulation of the power supply. Therefore, the power supply is stabilized within a certain range, and the stable operation of the full-sea-depth ROV power supply system is ensured.
The embodiment of the invention provides a stabilizing device of a full-sea-depth ROV power supply, which feeds back power voltage of a far-end full-sea-depth ROV to a controller of a water surface power supply device through real-time monitoring of the power voltage, the controller switches taps of a three-phase step-up transformer for power supply through an on-load tap-changer according to the monitored voltage value, adjusts output voltage of the three-phase step-up transformer, stabilizes working voltage of the far-end full-sea-depth ROV under the condition of no current interruption, solves the problems of difficult starting and voltage fluctuation caused by ultra-long distance power supply, and improves power supply quality of the full-sea-depth ROV.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A stabilizing device for a full-sea-depth ROV power supply, the device comprising:
three-phase step-up transformer: providing power for a hydraulic power source, and adjusting power supply voltage according to the change of a load;
a tap switch: the tap joint of the three-phase step-up transformer for supplying power is switched to realize voltage regulation under the condition of not interrupting load current;
a voltage regulating controller: controlling the tap changer according to an internally generated deviation signal;
umbilical cable: providing a power supply, a signal channel and bearing capacity for the full-sea-depth ROV;
a hydraulic power source: receiving electric energy transmitted by an umbilical cable for driving, and providing power for equipment including a propeller and a manipulator carried by the full-sea-depth ROV;
a voltage monitoring module: monitoring the operating voltage of the hydraulic power source, and feeding back the voltage value of the operating voltage to the voltage regulating controller;
the three-phase step-up transformer is connected with the tap switch, and the tap switch is also respectively connected with the voltage regulation controller and the umbilical cable;
the pressure regulating controller is connected with a main console, the main console regulates the pressure regulating controller through setting signals, the umbilical cable is connected with the hydraulic power source, and the hydraulic power source is further connected with the voltage monitoring module.
2. The apparatus of claim 1, wherein the connection between the tap changer and the umbilical and the hydraulic power source are made via optical fibers.
3. The device of claim 1, wherein a first optical transceiver is connected between the umbilical cable and the hydraulic power source for converting the electrical signal into an optical signal, and the voltage monitoring module receives a monitoring signal from the hydraulic power source and feeds a voltage value back to the voltage regulation controller through a feedback signal.
4. The device of claim 3, wherein a second optical transceiver is connected between the tap changer and the umbilical cable for converting optical signals into electrical signals, and the voltage regulation controller receives the feedback signal of the voltage monitoring module.
5. The device of claim 1, wherein the voltage regulating controller receives a voltage setting signal sent by the main console and receives a feedback signal of the voltage monitoring module, a comparator inside the voltage regulating controller generates a deviation signal, and a driving mechanism of the tap changer is controlled according to the deviation signal, so that taps of the three-phase step-up transformer for supplying power are switched, and the voltage regulation of the power supply is realized.
6. The apparatus of claim 1, wherein the input voltage of the three-phase step-up transformer is 380V.
7. The apparatus of claim 1, wherein the design power of the three-phase step-up transformer is 80 KW; the design power of the hydraulic power source is 45 KW.
8. The apparatus of claim 1, wherein the tap changer is an on-load tap changer.
9. A method for stabilizing an all-sea-depth ROV power supply, based on the stabilizing device of any one of claims 1 to 8, comprising:
the method comprises the following steps: the three-phase power supply output by the three-phase step-up transformer is conveyed to a hydraulic power source through an umbilical cable to provide power for the full-sea deep ROV carrying equipment;
step two: the voltage monitoring module monitors the operating voltage of the hydraulic power source and feeds a feedback signal of a voltage value back to the voltage regulating controller through an umbilical cable;
step three: the feedback signal is compared with a voltage setting signal sent by the main console in the voltage regulating controller to generate a deviation signal, a driving mechanism of a tap switch is controlled according to the deviation signal, a tap of a three-phase step-up transformer for supplying power is switched, the voltage regulation of the power supply is realized, and the power supply is stabilized in a required range.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method as claimed in claim 9.
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| CN202110211877.5A CN112994549A (en) | 2021-02-25 | 2021-02-25 | Stabilizing device, method and medium for full-sea-depth ROV power supply |
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| CN202110211877.5A CN112994549A (en) | 2021-02-25 | 2021-02-25 | Stabilizing device, method and medium for full-sea-depth ROV power supply |
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Application publication date: 20210618 |