Offshore oilfield platform host remote control system and method thereof

Abstract

The invention relates to an offshore oilfield platform host remote control system and a method thereof. The method is applied to a land remote control center, the land remote control center is in communication connection with a unit control system, the unit control system is arranged in a main generator room on an offshore oilfield site and used for monitoring operation of multiple generator sets on the offshore oilfield site, and the generator sets comprise at least one main generator set and at least one standby generator set. The method comprises the following steps: S11, acquiring a monitored running state of a main generator set through a set control system; and S12, judging whether the running main generator set breaks down or not according to the running state. And S13, if yes, sending a starting instruction to a unit control system so as to remotely control the standby unit to start. According to the invention, the loss of crude oil yield can be reduced more effectively, and the stability of oil field yield is ensured.

Description

Technical Field

[0001] The present invention relates to the field of offshore operation control technology, and in particular to a remote control system and method for a main engine of an offshore oilfield platform. Background Art

[0002] At present, offshore oilfield platforms have adopted a certain degree of remote monitoring and control systems when dealing with extreme weather such as typhoons, but most of these systems focus on the remote operation of a single system, such as remote monitoring of the electrical system or fuel system, and fail to achieve comprehensive intelligence and remote control of the overall control system of the main generator set. In addition, existing systems often have problems such as low automation, high demand for manual intervention, and poor coordination between systems, making it difficult to ensure the continuity and stability of oilfield production under extreme conditions. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a remote control system and method for a main engine of an offshore oilfield platform.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a method for remote control of an offshore oilfield platform host, which is applied to a land remote control center, wherein the land remote control center is connected to a unit control system in communication, and the unit control system is arranged in a main generator room at an offshore oilfield site, and is used to monitor the operation of multiple generator sets at the offshore oilfield site, wherein the generator sets include at least one main generator set and at least one standby generator set, and the method includes the following steps:

[0005] S11, obtaining the operating status of the main generator set monitored by the generator set control system;

[0006] S12, judging whether the main generator set in operation has a fault according to the operating status;

[0007] S13: If yes, a start-up instruction is sent to the unit control system to remotely control the start-up of the standby unit.

[0008] Further, in the offshore oilfield platform host remote control method of the present invention, the standby unit includes a plurality of related auxiliary equipment systems, and in step S13, it includes:

[0009] When it is determined that a fault occurs in the running main generator set, a start-up instruction is sent to the set control system, so that the set control system controls the start-up of the related auxiliary equipment system according to a preset start-up logic sequence.

[0010] Further, in the offshore oilfield platform host remote control method of the present invention, step S13 also includes:

[0011] When it is determined that the main generator set in operation fails, the standby generator set is started and connected to the grid by remote control.

[0012] In addition, the present invention also provides a method for remotely controlling a main engine of an offshore oilfield platform, which is applied to a unit control system, wherein a land remote control center is in communication connection with the unit control system, the unit control system is located in a main generator room at an offshore oilfield site, the generator set includes at least one main generator set and at least one standby generator set, and the method includes the following steps:

[0013] S21, monitoring the operating status of the main generator set, and determining whether the main generator set in operation has a fault according to the operating status; if so, sending a machine replacement request or an operating fault signal to the land remote control center;

[0014] S22, receiving a start instruction issued by the land remote control center according to the machine replacement request or the operation fault signal;

[0015] S23. In response to the startup instruction, control the standby unit to start.

[0016] Further, in the offshore oilfield platform host remote control method of the present invention, the standby unit includes a plurality of related auxiliary equipment systems, and step S23 includes:

[0017] The unit control system responds to the startup instruction and controls the startup of related auxiliary equipment systems of the standby unit according to a preset startup logic sequence.

[0018] Furthermore, in the offshore oilfield platform host remote control method of the present invention, after step S23, it also includes:

[0019] S24, the unit control system detects whether the standby unit meets the preset grid-connected conditions; if so, a synchronous closing instruction is sent to the standby unit to control it to be connected to the grid.

[0020] Furthermore, in the offshore oilfield platform host remote control method of the present invention, the method further includes:

[0021] The unit control system adaptively adjusts the power distribution parameters of the generator set according to the real-time operation data of the power grid to optimize its operation status.

[0022] Furthermore, in the offshore oilfield platform host remote control method of the present invention, the method further includes:

[0023] The unit control system transmits the collected real-time operating data of each auxiliary equipment system in the generator set to the land remote control center, so that the land remote control center can perform remote diagnosis based on the corresponding real-time operating data to predict potential faults.

[0024] In addition, the present invention also provides a remote control system for an offshore oilfield platform host, comprising a land remote control center, a unit control system and a plurality of generator sets, wherein the generator sets include at least one main generator set and at least one standby generator set;

[0025] The unit control system is arranged in the main generator room at the offshore oil field site, and is connected to the land remote control center for executing the above-mentioned offshore oil field platform host remote control method;

[0026] The land-based remote control center is used to send the start-up instruction to the unit control system after receiving the machine replacement request or operation fault signal.

[0027] Furthermore, in the offshore oilfield platform main engine remote control system described in the present invention, the unit control system is additionally provided with an electric operating mechanism, and the electric operating mechanism is connected to the standby unit. When the unit control system receives a start-up command issued by the land remote control center, the electric operating mechanism is used to realize remote operation of the standby unit.

[0028] The implementation of the offshore oilfield platform host remote control system and method of the present invention has the following beneficial effects: the present invention can improve the reliability and stability of the unit system in the platform automatic control mode through the land remote control of the generator set, which helps to more effectively reduce the loss of crude oil production and ensure the stability of oilfield production. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] Figure 1 It is a structural schematic diagram of a host remote control system for an offshore oilfield platform provided by a first embodiment of the present invention;

[0031] Figure 2 It is a flow chart of a method for remotely controlling a host of an offshore oilfield platform provided by a second embodiment of the present invention;

[0032] Figure 3 It is a flowchart of a method for remotely controlling a host of an offshore oilfield platform provided by some embodiments of the present invention;

[0033] Figure 4 It is a flowchart of a method for remotely controlling an offshore oilfield platform host provided by a third embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0035] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0037] refer to Figure 1In the first embodiment provided by the present invention, the remote control system of the main engine of the offshore oilfield platform of this embodiment includes a land remote control center, a unit control system and multiple generator sets, and the generator sets include at least one main generator set and at least one standby unit. Specifically, each generator set includes multiple related auxiliary equipment systems. In other words, the generator set may include multiple main generator sets and multiple standby units. The main generator set is the unit that operates in normal mode or even typhoon mode, and the standby unit is mainly used to seamlessly connect to ensure the oilfield power and normal operation of the oilfield when the main generator set fails abnormally. Taking a certain offshore oilfield as an example, there are six generator sets, including four main generator sets and two standby units. The specific number of generator sets in different offshore oilfields may be different, and the present invention does not make specific limitations on this.

[0038] The unit control system is located in the main generator room at the offshore oil field site and is connected to the land remote control center. The unit control system monitors the operating status of the main generator set and determines whether the running main generator set has a fault based on the operating status. If it is determined that the running main generator set has a fault (or abnormality), a replacement request or an operating fault signal is sent to the land remote control center. It can be understood that the preset operating status and fault condition comparison table can be used to query and confirm whether the main generator set has a fault, or the current operating parameters can be compared with the normal operating parameters. If there is an error or inconsistency, it is determined that the main generator set has a fault.

[0039] After receiving the machine change request or operation fault signal, the land remote control center sends the start-up instruction to the unit control system. The unit control system receives the start-up instruction issued by the land remote control center according to the machine change request or operation fault signal, and controls the start-up of the standby unit in response to the start-up instruction. At this time, the main generator set automatically shuts down due to the fault. As an option, this embodiment can also be provided with a manual shutdown mode to realize the manual shutdown function. Of course, the unit control system can also control the shutdown of the faulty main generator set. Specifically, the unit control system responds to the start-up instruction and controls the startup of the related auxiliary equipment system of the standby unit according to the preset startup logic sequence. Accordingly, the related auxiliary equipment system of the main generator set automatically shuts down.

[0040] This embodiment improves the reliability and stability of the generator system in the platform automatic control mode by remotely controlling the generator set on land, which helps to more effectively reduce the loss of crude oil production and ensure the stability of oil field production.

[0041] Preferably, the unit control system can also detect whether the standby unit meets the preset grid-connected conditions. If the preset grid-connected conditions are met, the synchronous closing command is sent to the standby unit to control its connection to the grid. It can be understood that the preset grid-connected conditions are that the speed and voltage of the standby unit are consistent with the grid. In other words, the unit control system adopts a remote automatic synchronous closing method, triggers the synchronous closing command in the automatic operation mode, and the controller PPU automatically adjusts the speed and voltage and automatically detects the synchronization conditions, and automatically issues a closing command when the conditions are met. The automatic synchronization function can also display a synchronization failure (GB Sync failure) by adding a PPU output, which is connected to the PLC as a remote prompt information.

[0042] It should be noted that the grid connection of the present invention refers to the connection to the power grid, so that the electricity generated by the generator set works together with the original power grid to provide electric energy. The synchronous closing instruction means that the electricity generated by the generator after the generator is started must be synchronized with the power grid. The host of the present invention refers to the generator set running on the grid.

[0043] In this embodiment, when a fault occurs in the operating power station, it can switch to the backup power station through remote operation. After the main control receives the command from the land control center, the backup power station and its related auxiliary equipment systems automatically start and connect according to the preset automation process. This embodiment uses remote start-stop and grid connection technology to open up remote communication between land and sea, ensure the accurate transmission and execution of remote commands, and realize the rapid start-stop and grid connection of the host unit.

[0044] It is understood that each generator set includes but is not limited to the following auxiliary equipment: intercooler system, fuel circulation system, fuel filtration system, lubricating oil separation system, main engine ventilation, pre-lubrication system (including pre-lubrication oil pump) and intake and exhaust system. In addition, common auxiliary equipment such as crude oil supercharger, diesel supercharger, crude oil separator and air compressor are also under the supervision of the unit control system.

[0045] As an option, the host remote control system of the offshore oilfield platform of this embodiment is also provided with a remote monitoring screen. For example, for the remote start mode, you can click "LOCAL CONTROL" on the host remote monitoring computer (ABB) and press "Enter" on the keyboard. After clicking "Cool Water Pump Auto Deactive", press "Enter" on the keyboard to operate the cooling water pump to start and stop. After clicking "Center Cooling SKID Start", press "Enter" on the keyboard to start the cooling water pump. The seawater inlet and outlet butterfly valves maintain the automatic control position, click the seawater valve, press "I" to open the valve, and press "O" to close the valve. After clicking "Engine Start", press "Enter" on the keyboard to start the host. When the host reaches the rated speed of 750rpm, check on the monitoring computer whether the water pump pressure of the engine belt oil pump is normal (high temperature water pressure 3bar, lubricating oil pressure 4bar-5bar, fuel pressure 5bar), voltage 10500V, frequency 50HZ, and whether the pre-lubricating oil pump stops automatically. Check the vibration parameters of the main engine of the unit on the ABB monitoring computer. Check the pipelines in the main engine room for leaks on the CCTV system. Check the exhaust temperature and temperature difference of each cylinder on the ABB monitoring computer for abnormalities. Check the motor bearing and winding temperature on the ABB monitoring computer for abnormalities. Check the oil level of the lubricating oil pan during no-load operation on the ABB monitoring computer. After the main engine has been running for a few minutes and the system parameters are normal, perform the parallel operation on the ABB monitoring computer.

[0046] In addition, before remote start, the following conditions need to be checked: For example, before a running unit is removed from the platform, it needs to be turned and blown, and the unit needs to be shut down for standby after the start-up and grid-connected operation test. Check whether the damper in the main engine room is open and whether the fan is working properly to ensure that the engine room is in a positive pressure state. Check and confirm that the intercooler skid flow is connected, the seawater inlet and outlet valves are fully open, the inlet pressure is 3-5bar, adjust the outlet valve, maintain the back pressure at 0.5bar, set the local control panel to Remote mode, confirm that the cylinder jacket water preheater is working properly, and the cylinder jacket water temperature is 55-65℃. Check and confirm that the pre-lubrication pressure is 0.5-1bar through the remote monitoring screen. Check and confirm that the fuel system flow is connected through the remote monitoring screen, confirm that the fuel pressure of each skid is normal, the filter pressure difference is normal, and the fuel inlet pressure is about 5.8bar. Check and confirm that the main engine start air pressure gauge is 15bar-30bar through the remote monitoring screen, and remotely drain the air bottle. Check that the oil level in the oil pan and the expansion tank level are within the normal range through the remote monitoring screen. Check the remote monitoring screen to confirm that the host has not started self-locking.

[0047] For manual parking, you can click "LOCAL CONTROL" on the host ABB remote monitoring computer and press "Enter" on the keyboard. After running at no load for 5 minutes, click "Engine Stop" and click Confirm to stop the host and stop the host. Check the host speed, exhaust, lubricating oil pressure and other data through the host ABB remote monitoring computer to ensure that the host stops running. After the host stops, confirm the working status of the pre-lubrication oil pump, and manually stop the low-temperature water pump remotely after running for a period of time. After parking, confirm whether there are any abnormal alarms and shutdown signals, and confirm that the host is in normal standby status.

[0048] For emergency stop, click "LOCAL CONTROL" on the host ABB remote monitoring computer and press "Enter" on the keyboard. Click the emergency stop button on the host ABB remote monitoring computer and press "Enter" on the keyboard. After emergency stop, the host cannot be started remotely.

[0049] In a specific embodiment, the unit control system is additionally provided with an electric operating mechanism, which is connected to the standby unit. When the unit control system receives a start command from the land remote control center, the standby unit is remotely operated through the electric operating mechanism. It can be understood that in order to realize the remote operation of the generator set, an electric operating mechanism needs to be added to support functions such as remote operation mode, start command, circuit breaker fault reset, synchronous closing, unloading opening and alarm reset. Specifically, an electric operating mechanism is added to the feeder circuit of the MCC drawer cabinet of the unit control system to realize remote opening and closing and reset of the PMS, and the switch status is fed back to the PMS. For this purpose, the main control panel of the host is modified accordingly to realize remote operation, and the corresponding status signal is transmitted to the remote operation station. The remote automatic synchronous closing mode is adopted, and the synchronous closing command is triggered in the automatic operation mode. The controller PPU automatically adjusts the speed and voltage and automatically detects the synchronization conditions, and automatically issues a closing command after the conditions are met. The automatic synchronization function adds an output display of the PPU for synchronization failure (GB Sync failure), which is received by the PLC as a remote prompt information.

[0050] For the pre-lubrication oil pump, the unit needs to be pre-lubricated before the host is remotely started. The remote manual / automatic switching function, start and stop command interface of the pre-lubrication pump are added, and the relevant status signal of the equipment is sent to the remote user equipment. At the same time, in order to meet the control and display requirements, the control program needs to be configured and programmed accordingly. For the fan, in order to meet the air supply requirements of the host, the fan remote switching and start and stop command interface are added, and the status signal is sent to the remote device. The control program is configured and programmed to meet the control and display requirements. For the cooling water pump, the cooling water pump remote switching and start and stop command interface are added, and the equipment status signal is sent to the remote device. The control program needs to be configured and programmed to meet the control and display requirements. For the fuel oil system, the remote start and stop, reset, crude oil / diesel switching, and reset functions of diesel switching to crude oil of the fuel circulation skid are developed; the remote operation interface and status signal interface are added. At the same time, in order to meet the control and display requirements, the control program needs to be programmed and configured accordingly.

[0051] For the fuel oil system (on-site control panel of the fuel circulation skid), add the remote start and stop command of the fuel circulation skid, and send the relevant status signal of the equipment to the remote user equipment. At the same time, in order to meet the control and display requirements, the control program needs to be configured and programmed accordingly. For the lubricating oil separator, it is necessary to add a communication module interface, and at the same time, in order to meet the control and display requirements, the control program needs to be configured and programmed accordingly.

[0052] The seawater system, lubricating oil system, expansion water tank, main engine oil pan, PPU battery storage card replacement and other public systems and equipment are modified and finally connected to the main control panel (unit control system) of the unit. For example, the seawater system is mainly for the modification of the butterfly valve of the central cooling skid, and the remote opening and closing of the butterfly valve is realized through remote control. Specifically, the maximum operating pressure difference of the valve can be determined on site, and the actuator torque can be reasonably selected according to the inlet and outlet pressure of the valve. The seawater butterfly valves at the 10-inch inlet and outlet of the intercooler skid are changed to electric switch butterfly valves, and the control point is connected to the ABB PLC system. For the lubricating oil system, it is mainly for the modification of the outlet of the lubricating oil separator, and the outlet pressure of the oil separator is controlled by adding an automatic pressure regulating valve. Specifically, the valve control requirements and process parameters can be provided on site to determine the valve position information and confirm whether the valve data information is appropriate. Add pressure regulating valves (a total of 6, each with 1 AO) and valve position feedback signals (each with 1 AI) to the outlet pipeline of the lubricating oil separator. For the expansion water tank, the expansion water tank is mainly added with a liquid level sensor to monitor the liquid level of the expansion water tank. The original level gauge was removed and a level transmitter with on-site display was installed to realize the level indication and remote transmission functions. The feasibility of adding a differential pressure level transmitter to the bottom opening needs to be confirmed on site. Six differential pressure level transmitters were added to the expansion water tank (one AI each). For the main engine oil pan, the magnetostrictive level transmitter of one main engine oil pan was replaced with an insertable reed switch level transmitter. The high and low level alarms of the main engine oil pan were changed to level transmitters (a total of six, one AI each) to realize the real-time monitoring function of the level data. For the PPU, the battery storage card is replaced regularly to ensure that the parameters and programs set by the control unit in the memory will not be lost, and to ensure the startup of the unit. This embodiment also transforms the comprehensive alarm control circuit of the main engine system, and adds relays to the comprehensive alarm point to expand the alarm signal, one for the original system and one for the central control alarm device. At the same time, the unit safety system collects the starting air pressure, the communication reads the pressure data, and the configuration programming processes the high air pressure alarm.

[0053] For crude oil superchargers, the remote fuel switching and reset function interfaces of crude oil supercharger skids can be added, and the relevant status signals of the equipment can be sent to the remote user equipment. At the same time, in order to meet the control and display requirements, the control program needs to be configured and programmed accordingly. For diesel supercharger skids, the remote manual / automatic switching function command interface of diesel supercharger pumps can be added, and the relevant status signals of the equipment can be sent to the remote user equipment. At the same time, in order to meet the control and display requirements, the control program needs to be configured and programmed accordingly.

[0054] This embodiment also transforms the on-site auxiliary facilities including the crude oil booster skid, diesel booster skid, starting air, and the system crude oil separator LCP control panel, and connects them to the common control panel of the unit. Specifically, an operation interface with the local control panel of the crude oil booster skid is added, and the device-related status signal is sent to the remote device. At the same time, in order to meet the control and display requirements, the control program needs to be configured and programmed accordingly. An operation interface with the local control panel of the diesel booster skid is added, and the device-related status signal is sent to the remote user device. At the same time, in order to meet the control and display requirements, the control program needs to be configured and programmed accordingly. Add an interface for remote control with the 1=MANUAL / 0=OFF-RESET / 2=AUTOMATIC selection switch of the local control panel of the air compressor. For the crude oil separator, a two-way communication method is used to realize the remote function, and the ABB system and PMS establish Modbus TCP communication to realize remote control. The remote adjustment function of the crude oil separator outlet flow regulating valve is retained.

[0055] The system integrates key modules such as the unit control system, fuel system, intake / exhaust system, cooling system, lubricating oil system, electrical system, compressed air system and fault monitoring system. Through a highly integrated intelligent control platform, when a main unit running on the grid fails, the standby unit can be remotely started and automatically connected to the grid at the first time. That is, when a failure occurs in the running main unit and a request for replacement is issued or a fault trip occurs, the unit control system can receive remote operation instructions, automatically start the standby main unit and its corresponding auxiliary machine, and automatically close the generator incoming line circuit breaker synchronously. This embodiment can realize comprehensive remote start and stop, grid-connected operation and load management of the generator set.

[0056] In some embodiments, the unit control system can also adaptively adjust the power distribution parameters of the generator set according to the real-time operation data of the power grid to optimize its operation status. This embodiment automatically adjusts the power distribution parameters according to the real-time operation data of the power grid to optimize the operation status, which can further improve the host efficiency.

[0057] The unit control system can also transmit the collected real-time operation data of each auxiliary equipment system in the generator set to the land remote control center, so that the land remote control center can perform remote diagnosis based on the corresponding real-time operation data to predict potential faults. This embodiment can achieve coordinated control of the host system and improve overall operation efficiency by integrating the data of each system. It can also predict potential faults by using system integration and big data analysis, take preventive measures in advance, and reduce the risk of production shutdown.

[0058] refer to Figure 2 In the second embodiment provided by the present invention, the remote control method of the main engine of the offshore oilfield platform of this embodiment is applied to the unit control system. The land remote control center is connected to the unit control system in communication, and the unit control system is located in the main generator room at the offshore oilfield site.

[0059] S21. Monitor the operating status of the main generator set, and determine whether a failure occurs in the running main generator set according to the operating status.

[0060] S22. Receive a start command issued by the land remote control center according to a machine replacement request or an operation fault signal.

[0061] S23, in response to the start-up instruction, control the standby unit to start, and the main generator set with the fault automatically shuts down. Specifically, the unit control system controls the start-up of the related auxiliary equipment system of the standby unit according to the preset start-up logic sequence in response to the start-up instruction.

[0062] This embodiment improves the reliability and stability of the generator system in the platform automatic control mode by remotely controlling the generator set on land, which helps to more effectively reduce the loss of crude oil production and ensure the stability of oil field production.

[0063] In some embodiments, reference Figure 3 , after step S23, further comprising:

[0064] S24, the unit control system detects whether the standby unit meets the preset grid connection conditions. If so, the synchronous closing command is sent to the standby unit to control its connection to the grid. In other words, the unit control system adopts a remote automatic synchronous closing method, triggers the synchronous closing command in the automatic operation mode, and the controller PPU automatically adjusts the speed and voltage and automatically detects the synchronization conditions. When the conditions are met, the closing command is automatically issued. The automatic synchronization function can also display the synchronization failure (GB Sync failure) by adding a PPU output, which is connected to the PLC as a remote prompt information.

[0065] In this embodiment, when a fault occurs in the operating power station, it can switch to the backup power station through remote operation. After the main control receives the command from the land control center, the backup power station and its related auxiliary equipment systems automatically start and connect according to the preset automation process. This embodiment uses remote start-stop and grid connection technology to open up remote communication between land and sea, ensure the accurate transmission and execution of remote commands, and realize the rapid start-stop and grid connection of the host unit.

[0066] In some embodiments, the method further includes: the unit control system adaptively adjusts the power distribution parameters of the generator set according to the real-time operation data of the power grid to optimize its operation state. This embodiment automatically adjusts the power distribution parameters according to the real-time operation data of the power grid to optimize the operation state, which can further improve the host efficiency.

[0067] The unit control system transmits the collected real-time operation data of each auxiliary equipment system in the generator set to the land remote control center, so that the land remote control center can perform remote diagnosis based on the corresponding real-time operation data to predict potential faults. This embodiment can achieve coordinated control of the host system and improve overall operation efficiency by integrating the data of each system. It can also predict potential faults by using system integration and big data analysis, take preventive measures in advance, and reduce the risk of production shutdown.

[0068] refer to Figure 4 In a third embodiment of the present invention, the method for remotely controlling the main engine of an offshore oilfield platform of the present embodiment is applied to a land remote control center, the land remote control center is in communication connection with a unit control system, the unit control system is located in a main generator room at an offshore oilfield site, and is used to monitor the operation of multiple generator sets at an offshore oilfield site, the generator sets including at least one main generator set and at least one standby generator set, the method comprising the following steps:

[0069] S11. Obtain the operating status of the main generator set monitored by the unit control system.

[0070] S12. Determine whether a main generator set in operation has a fault according to the operating status.

[0071] It can be understood that in the present invention, the task procedure of determining whether a main generator set in operation has failed based on the operating status can be executed by a remote control center on land or by a unit control system at an offshore oil field site (such as the first and second embodiments).

[0072] S13, if yes, then send the start command to the unit control system to remotely control the standby unit to start. Specifically, the standby unit includes a plurality of related auxiliary equipment systems. In this step, when it is determined that the running main generator set fails, the start command is sent to the unit control system so that the unit control system controls the start of the related auxiliary equipment systems according to the preset start logic sequence.

[0073] This embodiment improves the reliability and stability of the generator system in the platform automatic control mode by remotely controlling the generator set on land, which helps to more effectively reduce the loss of crude oil production and ensure the stability of oil field production.

[0074] Optionally, in step S13 of some embodiments, when it is determined that a fault occurs in the running main generator set, the standby unit is started and connected to the grid by remote control. Specifically, the unit control system detects whether the standby unit meets the preset grid-connected conditions. If so, the synchronous closing command is sent to the standby unit to control its connection to the grid. In other words, the unit control system adopts a remote automatic synchronous closing method, triggers the synchronous closing command in the automatic operation mode, and the controller PPU automatically adjusts the speed and voltage and automatically detects the synchronization conditions, and automatically issues a closing command when the conditions are met. The automatic synchronization function can also be achieved by adding a PPU output to display the synchronization failure (GB Sync failure), which is connected to the PLC as a remote prompt information.

[0075] In this embodiment, when a fault occurs in the operating power station, it can switch to the backup power station through remote operation. After the main control receives the command from the land control center, the backup power station and its related auxiliary equipment systems automatically start and connect according to the preset automation process. This embodiment uses remote start-stop and grid connection technology to open up remote communication between land and sea, ensure the accurate transmission and execution of remote commands, and realize the rapid start-stop and grid connection of the host unit.

[0076] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0077] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0078] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A remote control method for an offshore oilfield platform host, applied to a land remote control center, characterized in that: The land remote control center is in communication connection with a unit control system, and the unit control system is located in a main generator room at an offshore oil field site, and is used to monitor the operation of multiple generator sets at the offshore oil field site, wherein the generator sets include at least one main generator set and at least one standby generator set. The method includes the following steps: S11, obtaining the operating status of the main generator set monitored by the generator set control system; S12, judging whether the main generator set in operation has a fault according to the operating status; S13: If yes, a start-up instruction is sent to the unit control system to remotely control the start-up of the standby unit.

2. The method for remotely controlling the main engine of an offshore oilfield platform according to claim 1, characterized in that: The standby unit includes a plurality of related auxiliary equipment systems, and in step S13, includes: When it is determined that a fault occurs in the running main generator set, a start-up instruction is sent to the set control system, so that the set control system controls the start-up of the related auxiliary equipment system according to a preset start-up logic sequence.

3. The method for remotely controlling the main engine of an offshore oilfield platform according to claim 1, characterized in that: Step S13 also includes: When it is determined that the main generator set in operation fails, the standby generator set is started and connected to the grid by remote control.

4. A remote control method for an offshore oilfield platform host, applied to a unit control system, characterized in that: The land remote control center is in communication connection with the unit control system, the unit control system is located in the main generator room at the offshore oil field site, the generator set includes at least one main generator set and at least one standby generator set, and the method includes the following steps: S21, monitoring the operating status of the main generator set, and determining whether the main generator set in operation has a fault according to the operating status; if so, sending a machine replacement request or an operating fault signal to the land remote control center; S22, receiving a start instruction issued by the land remote control center according to the machine replacement request or the operation fault signal; S23. In response to the startup instruction, control the standby unit to start.

5. The method for remotely controlling the main engine of an offshore oilfield platform according to claim 4, characterized in that: The standby unit includes a plurality of related auxiliary equipment systems, and step S23 includes: The unit control system responds to the startup instruction and controls the startup of related auxiliary equipment systems of the standby unit according to a preset startup logic sequence.

6. The method for remotely controlling the main engine of an offshore oilfield platform according to claim 4, characterized in that: After step S23, the method further includes: S24, the unit control system detects whether the standby unit meets the preset grid-connected conditions; if so, a synchronous closing instruction is sent to the standby unit to control it to be connected to the grid.

7. The method for remotely controlling the main engine of an offshore oilfield platform according to claim 4, characterized in that: The method further includes: The unit control system adaptively adjusts the power distribution parameters of the generator set according to the real-time operation data of the power grid to optimize its operation status.

8. The method for remotely controlling the main engine of an offshore oilfield platform according to claim 4, characterized in that: The method further includes: The unit control system transmits the collected real-time operating data of each auxiliary equipment system in the generator set to the land remote control center, so that the land remote control center can perform remote diagnosis based on the corresponding real-time operating data to predict potential faults.

9. A remote control system for an offshore oilfield platform host, characterized in that: It includes a land remote control center, a unit control system and a plurality of generator sets, wherein the generator sets include at least one main generator set and at least one standby generator set; The unit control system is arranged in the main generator room at the offshore oil field site, and is communicatively connected to the land remote control center, and is used to execute the offshore oil field platform host remote control method as claimed in any one of claims 4 to 8; The land-based remote control center is used to send the start-up instruction to the unit control system after receiving the machine replacement request or operation fault signal.

10. The offshore oilfield platform host remote control system according to claim 9, characterized in that: The unit control system is additionally provided with an electric operating mechanism, and the electric operating mechanism is connected to the standby unit. When the unit control system receives a start-up instruction from the land remote control center, the standby unit is remotely operated through the electric operating mechanism.

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