A power information integrated display console and automatic supplementary charging method

Abstract

The present invention provides a power information integrated display and control console and an automatic supplementary charging method, wherein the integrated display and control console is composed of a cabinet, a display screen, a power grid information integrated display module, a self-checking module, a power grid topology display module, a switch control module, a power switching module, a propulsion control module and a generator integrated control module, and has an underwater automatic supplementary charging function. The power information integrated display and control console of the present invention adopts the design framework of a human-computer interaction computer and a task processing computer to achieve redundant backup of important monitoring information and improve the reliability of the equipment; adopts information integration design to optimize the control configuration station and realize centralized monitoring of the power grid; adopts an automatic supplementary charging algorithm to ensure that the underwater submersible battery pack is in a fully charged state for a long time, and ensure the power supply reliability of the submersible operation.

Description

Technical Field

[0001] The invention belongs to the field of integrated control of electromechanical equipment, and in particular relates to an integrated power information display and control console and an automatic supplementary charging method. Background Art

[0002] Traditional submersible power system monitoring equipment is numerous and has dispersed functions. The equipment has many types of external interfaces and various forms, which makes it difficult to realize centralized information monitoring. At the same time, various types of monitoring information cannot be monitored in real time and synchronously, which makes it difficult for operators to fully grasp the status information of each monitoring node in the system at the same time. Each monitoring device does not have the ability to monitor transient information of the power system and cannot complete the transient characteristics analysis of the power system. In addition, the power generation control and grid control of most submersibles are distributed in various areas, and centralized control cannot be achieved. The grid control is relatively independent, which will have certain safety hazards and cause certain waste of personnel. At the same time, for underwater submersibles, the general usage mode is that the battery pack is connected in parallel with the generator to power the entire ship. Generally, the battery power must be kept fully charged for a long time in case of emergency. When the battery power is insufficient due to the execution of characteristic tasks, it must be supplemented by charging to ensure the battery power.

[0003] A power information integrated display and control console can realize centralized monitoring of the whole ship's power grid information, realize generator regulation, automatic supplementary charging of battery packs, and power grid structure transformation, and provide support for remote monitoring, fault diagnosis and maintenance of the whole ship's power grid equipment, improve the integration optimization level, automatic control level and safety and reliability of the submersible, and has the characteristics of informatization, modularization and standardization, reduces the workload of personnel, and has good scalability. In summary, a power information integrated display and control console has far-reaching significance for ensuring the safety, reliability and automation of the whole ship's electromechanical equipment. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an electric power information integrated display and control console and an automatic supplementary charging method to achieve important tasks such as centralized monitoring, control and management of power system operating parameters and safety protection, so as to ensure stable and reliable operation of the power system.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An electric power information integrated display and control console comprises a display and control console cabinet, on which a display module, a self-checking module, a switch control module, a power switching module, a propulsion control module, a generator integrated control module, and an input module are arranged;

[0007] The display and control console cabinet is equipped with a human-computer interaction computer plus a task processing computer architecture; the human-computer interaction computer exchanges information with the on-site monitoring equipment, and the interactive information is displayed on the display module; the task processing computer serves as a redundant backup of the human-computer interaction computer and is used to run processing programs for critical tasks that require a high degree of reliability. At the same time, it is connected to the on-site control cabinet to complete information interaction with a high degree of reliability, and exchanges information with the human-computer interaction computer;

[0008] The self-check module includes a light check button, a mute button and a generator emergency stop switch;

[0009] The switch control module is a power network control and operation switch board, which is used to control the opening and closing of switches on the power grid;

[0010] The power switching module is used for starting up the display console and switching control of the external power supply;

[0011] The propulsion control module is used to control the propulsion;

[0012] The generator integrated control module is used to implement power generation, supplementary charging monitoring and management, and exchanges information with the task processing computer through the CAN bus. The CAN sending method is a comprehensive sending method of scheduled sending and updating and sending.

[0013] Preferably, the interactive information includes the network structure of the entire ship, the status of the generator, the status of the power supply, the propulsion status and the monitoring parameters, and receives the operator's control and management instructions through the input module.

[0014] Preferably, the display module includes a display screen; the display screen displays all operating parameters, status and alarm information of the power system, and can switch display pages and issue control management instructions through the input module.

[0015] Preferably, the display module includes a first power grid information comprehensive display module and a second power grid information comprehensive display module; the first power grid information comprehensive display module displays the operating position, start / stop status and alarm status of important power grid equipment, and the important power grid equipment includes generators and inverter power supplies; the second power grid information comprehensive display module displays key parameter information of the power grid, battery, generator and propulsion motor.

[0016] Preferably, the display module comprises a power grid topology display module, which is a simulation display board of the main power grid of the power system, and the indicator lights on the display board are connected to the field equipment through a hard-wired channel.

[0017] Preferably, the task processing computer exchanges information with the human-computer interaction computer via Ethernet.

[0018] Preferably, the input module is a trackball mouse.

[0019] Preferably, the generator integrated control module is internally composed of a CPU board and a key board, and the key board is composed of keys and digital tubes; the power supply part adopts an isolated power supply to protect the internal circuit.

[0020] An automatic supplementary charging method is embedded in the above-mentioned power information integrated display console in the form of a software algorithm. When the battery is discharged in large quantities and the remaining power W s When the voltage is lower than the first threshold, the charging starts automatically, and the first stage of high current charging starts first:

[0021] P 11 +P 12 -(P m +P s )=I c1 *V

[0022] In the formula, I c1 is the primary charging current, P m is the propulsion motor power on board, P s is the auxiliary power, V is the battery outlet voltage; P 11 and P 12 Represent the output power of the two generators respectively, set one as the command unit, and maintain a constant power output P 11 , the other is a regulating unit, with I c1 To adjust the target, closed-loop control is performed, and the output is P 12 ;

[0023] When the remaining battery power is W s When the second threshold is reached, secondary current charging starts:

[0024] P 11 +P 12 -(P m +P s )=I c2 *V

[0025] In the formula, I c2 It is the secondary charging current. At this time, due to the reduction of charging power, the unit is instructed to operate at a reduced rating according to the load conditions. The derating basis is:

[0026] 1.5P e ≥P m +P s +VI c2

[0027] Among them, P e is the rated power of a single generator, at which point the unit is commanded to operate at half power;

[0028] When the remaining power W s When the third threshold is reached, the final current charging is started:

[0029] P 11 +P 12 -(P m +P s )=I c3 *V

[0030] In the formula, I c3 The third-level charging current, at this time, because the charging power is further reduced, the command unit can be derated or automatically shut down according to the load conditions, based on:

[0031] P e ≥P m +P s +VI c2

[0032] The charging formula after shutdown is:

[0033] P 12 -(P m +P s )=I c3 *V.

[0034] Preferably, the first threshold is 50% of the total power, the second threshold is 80% of the total power, and the third threshold is 90% of the total power.

[0035] The beneficial effects of the present invention are:

[0036] 1) Adopt the design architecture of human-computer interaction computer and task processing computer to realize redundant backup of important monitoring information and improve the reliability of equipment;

[0037] 2) Adopt information integration design, optimize control configuration station location, and realize centralized monitoring of the power grid;

[0038] 3) An automatic charging algorithm is used to ensure that the underwater submersible battery pack is fully charged for a long time, ensuring the power supply reliability of the submersible operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a structural diagram of the electric power integrated display and control console in one embodiment of the present invention.

[0040] Figure 2 This is a diagram of display components of an electric power integrated display and control console in one embodiment of the present invention.

[0041] Figure 3 This is a diagram of the control panel of the electric power integrated display and control console in one embodiment of the present invention.

[0042] Figure 4 This is an internal connection diagram of an electric power integrated display and control console in one embodiment of the present invention.

[0043] In the figure: 1-display and control console cabinet, 2-display screen, 3-first power grid information comprehensive display module, 4-second power grid information comprehensive display module, 5-self-check module, 6-power grid topology display module, 7-switch control module, 8-power switching module, 9-propulsion control module, 10-generator comprehensive control module, 11-mouse. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0045] The electric power integrated display and control console is the monitoring and management center of the electric power system. It integrates information from numerous monitoring devices in the electric power system, monitors, displays and records the transient information, steady-state information and insulation information of the electric power system in real time, can centrally control the grid topology and generator operation, and can automatically replenish and charge the battery in real time according to the battery power, and alarm when the operating parameters of the electric power system exceed the limit. It has functions such as self-test, light check and alarm silencing.

[0046] The electric power information integrated display and control console of the embodiment of the present invention is as follows: Figure 1-3 As shown, it includes a display and control console cabinet 1, a display screen 2, a first power grid information comprehensive display module 3, a second power grid information comprehensive display module 4, a self-test module 5, a power grid topology display module 6, a switch control module 7, a power switching module 8, a propulsion control module 9, a generator comprehensive control module 10 and a mouse 11.

[0047] The display and control console cabinet 1 has a structure of a man-machine computer + a task computer, such as Figure 4 As shown. The power integrated display and control console adopts the "human-computer interaction computer + task computer" system architecture. The power integrated display and control console is the monitoring and management center of the power system, responsible for important tasks such as system operation parameter monitoring, system alarm monitoring, control and management, and safety protection.

[0048] The human-machine interactive computer exchanges information with the on-site monitoring equipment through Ethernet; the interactive information of the human-machine interactive computer is centrally displayed on the LCD display of the display unit, mainly for centralized monitoring of the network structure of the entire ship, generator status, power status, propulsion status and important parameters, and receives operator control and management instructions through the trackball mouse. The human-machine interactive computer is connected to the dual redundant Ethernet network through dual network cards, the LCD display is connected to the human-machine interactive computer through DVI, and the trackball is connected to the human-machine interactive computer through USB.

[0049] The task processing computer serves as a redundant backup for the human-computer interaction computer and runs the processing programs for critical tasks that require a high degree of reliability. That is, when the human-computer interaction computer fails, the critical tasks can be completed by the task processing computer. The task processing computer exchanges information with the human-computer interaction computer through Ethernet. The task processing computer is connected to the field control cabinet through the field bus to complete the information exchange with the highest degree of reliability. The task processing computer is connected to the power grid information integrated display module, the power grid topology display module and the generator control component through the field bus, displays important information through the corresponding components, and completes the corresponding control command input. The power grid switch control component is directly connected to the field distribution board through a hard line to realize the control of the main circuit switch.

[0050] The display screen 2 centrally displays all operating parameters, status and alarm information of the power system through the software interface, and the display page can be switched and control management instructions can be issued by operating the trackball mouse.

[0051] The first grid information comprehensive display module 3 displays the operating position, start / stop status, alarm status and other information of important grid equipment such as generators and inverter power supply equipment; the second grid information comprehensive display module 4 displays key parameter information of the grid, battery, generator and propulsion motor.

[0052] The self-check module 5 is equipped with three components: a light check button, a mute button, and a generator emergency stop switch. The light check button is directly connected to the indicator light on the panel. When the button is pressed, all the indicator lights on the panel light up (including the indicator lights hard-wired to the on-site monitoring equipment and the indicator lights connected to the task machine). The mute button is used to confirm the alarm information. When the button is pressed, the buzzer is muted. The generator emergency stop switch is used for manual shutdown under emergency conditions.

[0053] The power grid topology display module 6 is a simulation display panel of the main power grid of the power system, and the indicator lights on the panel are connected to the field equipment through a hard-wired channel.

[0054] The switch control module 7 is a power network control operation switch panel. The switch knobs on the panel are connected to the field equipment through hard wiring to control the opening and closing of the switches on the power grid.

[0055] The power switching module 8 is used for starting up the display console and switching control of the external power supply. The power switching module converts two AC currents into DC currents to power the function panel, the reinforced computer, the reinforced LCD display, etc.

[0056] The propulsion control module 9 is used to control the propulsion.

[0057] The generator integrated control module 10 is used to implement power generation, supplementary charging monitoring and management, and to exchange information with the task processing computer through the CAN bus. The CAN transmission method is a comprehensive transmission method of scheduled transmission and update transmission. The component is composed of a CPU board and a key board, and the key board is composed of keys and digital tubes. The power supply part uses an isolated power supply to protect the internal circuit.

[0058] An automatic supplementary charging method is embedded in the above-mentioned power integrated display and control console in the form of a software algorithm. After the ship is maneuvered at high speed, the battery is discharged in large quantities, and the remaining power W s When it is lower than 50%, supplementary charging starts automatically. According to the characteristics of traditional battery packs, the first level of high current charging starts:

[0059] P 11 + P 12 -(P m +P s )=I c1 *V (1)

[0060] In the formula, I c1 is the primary charging current, P m is the propulsion motor power on board, P s P is the auxiliary power, V is the battery outlet voltage. 11 and P 12 They represent the output power of the two generators respectively. Under normal circumstances, one of them can be automatically set as the command unit to maintain a constant power output P 11 , the other is a regulating unit, with I c1 To adjust the target, closed-loop control is performed, and the output is P 12 The charging capacity in the first level charging mode is as follows:

[0061]

[0062] W c =VI c1 t (3)

[0063] Among them, V c1 is the average voltage during charging, t is the charging time, W c1 I c1 The charging capacity during the charging process.

[0064] When the remaining battery power is W s When the total power reaches 80% (depending on the battery characteristics), start secondary current charging:

[0065] P 11 + P 12 -(P m +P s )=Ic2 *V (4)

[0066] In the formula, I c2 It is the secondary charging current. At this time, due to the reduction of charging power, the command unit can be operated at a reduced rating according to the load conditions. The derating basis is:

[0067] 1.5P e ≥P m +P s +VI c2 (5)

[0068] Among them, P e is the rated power of a single generator. At this time, the command unit can be derated to operate at half power.

[0069] Similarly, when the remaining power W s When the total power reaches 90% (depending on the battery characteristics), the final current charging starts:

[0070] P 11 + P 12 -(P m +P s )=I c3 *V (6)

[0071] In the formula, I c3 The third-level charging current, at this time, because the charging power is further reduced, the command unit can be derated or automatically shut down according to the load conditions, based on:

[0072] P e ≥P m +P s +VI c2 (7)

[0073] The charging formula after shutdown is:

[0074] P 12 -(P m +P s )=I c3 *V (8)

[0075] The electric power integrated display and control console includes the following installation, debugging and operation steps:

[0076] (1) Equipment installation. The equipment is installed on the floor with the wiring connected from the bottom. The equipment is installed on the hull base and grounded as required. During installation, sufficient maintenance space should be left on the back of the platform.

[0077] (2) Equipment commissioning and inspection. ① Wiring check: Check the equipment wiring and power supply; ② Equipment power check: Turn on the equipment power and observe whether the power indicator light on the display console is on; ③ Signal control function check: Check whether the switch control module, propulsion control module, and generator integrated control module function normally; ④ Monitoring and alarm function check: Turn on the reinforcement machine and display switch on the display console, and start the reinforcement machine and display. Check whether the data displayed on the reinforcement machine is consistent with the data displayed on the corresponding system equipment. If everything is normal after the above checks, it means that the equipment can be put into normal operation.

[0078] (3) Equipment power supply. Set the power conversion switch to one side of the ship for power supply. The power indicator on the display console will light up, indicating that the reinforcement machine and display are powered. If the equipment loses power during operation, the power conversion switch can be turned to the other side of the ship for power supply.

[0079] (4) Signal control. After the equipment is powered on, if you need to operate the switch, propulsion motor and generator, just press the corresponding signal control on the table. The automatic control of the generator is as follows:

[0080] In automatic mode, the output current of the generator is automatically adjusted as the load demand changes, while keeping the current value at the battery group outlet constant. The generator can be selected to enter automatic mode by specifying the adjustment unit button, and then the given value of the battery group outlet current can be entered through the keyboard. Taking the No. 1 steam turbine generator as an example, press the No. 1 steam turbine light button in the designated adjustment unit area, and the No. 1 steam turbine light button will start flashing. Then press the "steam generator 1" and "current" buttons on the keyboard in sequence (the default is the bow battery. If you press the "current" button again, you can switch to the stern battery), enter the current given value at the battery group outlet, and press the "confirm" button to issue the command. When the generator control panel receives the automatic mode control command and switches the No. 1 steam turbine generator to automatic mode, it will feedback the status command to the integrated display console. At this time, the flashing of the No. 1 steam turbine light button turns to flat light.

[0081] The current value at the outlet of the battery pack in the automatic mode can also be given by the task processing computer according to the automatic supplementary charging method. Taking the No. 1 gas generator as an example, press the No. 1 gas generator light button, and the No. 1 gas generator light button starts to flash, and then press the "gas generator 1", "current" and "automatic" buttons on the keyboard in sequence. At this time, the task processing computer automatically calculates the current optimal charging current value according to the actual state of the battery pack and displays it on the keyboard LCD screen. If the operator agrees, he can press the "confirm" key to output the instruction. If the operator disagrees, he can press the "reset" key to clear the current value, and then manually re-enter the current value, and then press the "confirm" key to output the instruction.

[0082] (5) Monitoring alarm. If you need to display the parameters of each system device, you need to turn on the upper corner reinforcement machine and display switch on the table; after the reinforcement machine and display are turned on, the equipment will self-check and start up to enter the software interface. When an alarm occurs, the display console buzzer sounds and the alarm information pops up. Use the mute button to mute the sound and query the alarm information.

[0083] (6) Stop the equipment. When you need to stop the parameter display function, simply turn the reinforcement machine and display switch to the "off" position.

[0084] In summary, the present invention provides a comprehensive display and control console for electric power information and an underwater automatic supplementary charging method. The highly integrated electric power display and control console is composed of a cabinet, a display screen, a comprehensive display module for power grid information, a self-check module, a power grid topology display module, a switch control module, a power switching module, a propulsion control module, and a generator comprehensive control module, and is suitable for a comprehensive control system for ship electromechanical equipment. The system has a high degree of integration, adopts a unified top-level design requirement, optimizes the interface type and control strategy of the control layer, and has an underwater automatic supplementary charging function, realizing important tasks such as centralized monitoring, control and management of the operating parameters of the entire ship's power system, and safety protection, to ensure stable and reliable operation of the power system.

[0085] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A comprehensive display and control console for electric power information, characterized in that: It includes a display and control console cabinet, on which a display module, a self-checking module, a switch control module, a power switching module, a propulsion control module, a generator integrated control module, and an input module are arranged; The display and control console cabinet is equipped with a human-computer interaction computer plus a task processing computer architecture; the human-computer interaction computer exchanges information with the on-site monitoring equipment, and the interactive information is displayed on the display module; the task processing computer serves as a redundant backup of the human-computer interaction computer and is used to run processing programs for critical tasks that require a high degree of reliability. At the same time, it is connected to the on-site control cabinet to complete information interaction with a high degree of reliability, and exchanges information with the human-computer interaction computer; The self-check module includes a light check button, a mute button and a generator emergency stop switch; The switch control module is a power network control and operation switch board, which is used to control the opening and closing of switches on the power grid; The power switching module is used for starting up the display console and switching control of the external power supply; The propulsion control module is used to control the propulsion; The generator integrated control module is used to implement power generation, supplementary charging monitoring and management, and exchanges information with the task processing computer through the CAN bus. The CAN sending method is a comprehensive sending method of scheduled sending and updating and sending. The power information integrated display console is embedded with an automatic supplementary charging method in the form of a software algorithm, including: when the battery is discharged in large quantities and the remaining power W s When the voltage is lower than the first threshold, the charging starts automatically, and the first stage of high current charging starts first: P 11 +P 12 -(P m +P s )=I c1 *V In the formula, I c1 is the primary charging current, P m is the propulsion motor power on board, P s is the auxiliary power, V is the battery outlet voltage; P 11 and P 12 Represent the output power of the two generators respectively, set one as the command unit, and maintain a constant power output P 11 , the other is a regulating unit, with I c1 To adjust the target, closed-loop control is performed, and the output is P 12 ; When the remaining battery power is W s When the second threshold is reached, secondary current charging starts: P 11 +P 12 -(P m +P s )=I c2 *V In the formula, I c2 It is the secondary charging current. At this time, due to the reduction of charging power, the unit is instructed to operate at a reduced rating according to the load conditions. The derating basis is: 1.5P e ≥P m +P s +VI c2 Among them, P e is the rated power of a single generator, at which point the unit is commanded to operate at half power; When the remaining power W s When the third threshold is reached, the final current charging is started: P 11 +P 12 -(P m +P s )=I c3 *V In the formula, I c3 The third-level charging current, at this time, because the charging power is further reduced, the command unit can be derated or automatically shut down according to the load conditions, based on: P e ≥P m +P s +VI c2 The charging formula after shutdown is: P 12 -(P m +P s )=I c3 *V。 2. The electric power information integrated display and control console according to claim 1 is characterized in that: The interactive information includes the network structure of the entire ship, generator status, power status, propulsion status and monitoring parameters, and receives operator control and management instructions through the input module.

3. The electric power information integrated display and control console according to claim 1 is characterized in that: The display module includes a display screen; the display screen displays all operating parameters, status and alarm information of the power system, and can switch display pages and issue control management instructions through the input module.

4. The electric power information integrated display and control console according to claim 1, characterized in that: The display module includes a first power grid information comprehensive display module and a second power grid information comprehensive display module; the first power grid information comprehensive display module displays the operating position, start / stop status and alarm status of important power grid equipment, and the important power grid equipment includes generators and inverter power supplies; the second power grid information comprehensive display module displays key parameter information of the power grid, battery, generator and propulsion motor.

5. The electric power information integrated display and control console according to claim 1, characterized in that: The display module includes a power grid topology display module, which is a simulation display board of the main power grid of the power system. The indicator lights on the display board are connected to the on-site equipment through a hard-wired channel.

6. The electric power information integrated display and control console according to claim 1, characterized in that: The task processing computer exchanges information with the human-computer interaction computer via Ethernet.

7. The electric power information integrated display and control console according to claim 1, characterized in that: The input module is a trackball mouse.

8. The electric power information integrated display and control console according to claim 1, characterized in that: The internal structure of the generator integrated control module is composed of a CPU board and a key board, and the key board is composed of keys and digital tubes; the power supply part adopts an isolated power supply to protect the internal circuit.

9. The electric power information integrated display and control console according to claim 1, characterized in that: The first threshold is 50% of the total power, the second threshold is 80% of the total power, and the third threshold is 90% of the total power.

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