CN111817330A - Crane energy storage monitoring and scheduling system and scheduling method thereof - Google Patents

Crane energy storage monitoring and scheduling system and scheduling method thereof Download PDF

Info

Publication number
CN111817330A
CN111817330A CN202010713060.3A CN202010713060A CN111817330A CN 111817330 A CN111817330 A CN 111817330A CN 202010713060 A CN202010713060 A CN 202010713060A CN 111817330 A CN111817330 A CN 111817330A
Authority
CN
China
Prior art keywords
energy storage
monitoring
storage device
power supply
crane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010713060.3A
Other languages
Chinese (zh)
Other versions
CN111817330B (en
Inventor
赫亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Victor Technology Co ltd
Original Assignee
Foshan Victor Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foshan Victor Technology Co ltd filed Critical Foshan Victor Technology Co ltd
Priority to CN202010713060.3A priority Critical patent/CN111817330B/en
Publication of CN111817330A publication Critical patent/CN111817330A/en
Application granted granted Critical
Publication of CN111817330B publication Critical patent/CN111817330B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/0001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using modification of a parameter of the network power signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/14—Energy storage units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Abstract

The invention provides a crane energy storage monitoring and dispatching system and a dispatching method thereof, the crane energy storage monitoring and dispatching system comprises a crane, a power generation device, an energy storage device and a controller, the crane comprises a driving unit, a lifting appliance and a power supply device, the input end of the power generation device is connected with the driving unit, the controller controls the power supply device to be electrically connected with the energy storage device or a power grid, the energy storage device is provided with a battery management module, the battery management module sends first monitoring information to the controller, a rotating shaft of the potentiometer is connected with a transmission shaft of the lifting appliance, the potentiometer sends position information to the controller, the monitoring module sends second monitoring information to the controller, and the controller controls the power generation device to charge the energy storage device through the second relay or the first relay and the electromagnetic clutch. The crane energy storage monitoring and dispatching system and the dispatching method thereof can effectively and reliably control the energy of the system.

Description

Crane energy storage monitoring and scheduling system and scheduling method thereof
Technical Field
The invention relates to the technical field of hoisting machinery, in particular to a crane energy storage monitoring and dispatching system and a dispatching method thereof.
Background
The port is used as an assembly point and a hub of land and water traffic, is a distribution place for industrial and agricultural products and foreign trade export materials, and is also a place for loading and unloading goods and berthing ships. The port crane operates the cargo handling, the lifting height of the port crane is generally between 20 meters and 40 meters, the rated lifting weight is between 30 tons and 40 tons, 80 to 100 standard box actions can be completed per hour, the average power consumption of the port crane per hour is 50 kilowatts to 60 kilowatts, and the power consumption per month is about 4 thousands of degrees, so that the power consumption of the port crane is remarkable.
Therefore, in order to save energy consumption cost, the current port crane is provided with a power generation device and an energy storage device, the power generation device is connected with a driving unit of the port crane, and the energy storage device is electrically connected with the power generation device. When the driving unit drives the lifting appliance of the port crane to lift the container, the energy storage device can supply power to the power supply device of the port crane; when the driving unit controls the lifting appliance to lower the container, the power supply device is switched to be electrically connected with the commercial power, so that the commercial power supplies power for the power supply device. Therefore, the energy consumption cost of the port crane can be effectively reduced by the arrangement, but the arrangement has the following defects:
firstly, after a port crane begins to transfer a lifting appliance, a power generation device is connected to a driving unit, so that the power generation of the power generation device has hysteresis and the power generation amount is influenced;
secondly, the lifting speed of the lifting appliance to the container needs to be manually controlled, and the technical requirement on port crane operators is high;
thirdly, the energy storage device lacks the state monitoring of the energy storage device before the energy storage device executes the charging and discharging operation, so that certain potential safety hazard exists;
fourthly, the real-time monitoring of key factors such as the voltage, the frequency and the phase of the power grid is lacked, so that the power supply source cannot be switched in time when the power grid or the converter fails, and the reliability and the safety are poor.
Disclosure of Invention
In order to solve the above problems, a main object of the present invention is to provide a crane energy storage monitoring and dispatching system, which can perform effective and reliable energy management and control on an energy storage device, and has high safety and high reliability.
The invention also aims to provide a dispatching method of the crane energy storage monitoring and dispatching system.
In order to achieve the main object of the invention, the invention provides a crane energy storage monitoring and scheduling system, which comprises a crane, a power generation device and an energy storage device, wherein the crane comprises a driving unit, a lifting appliance and a power supply device, the driving unit drives the lifting appliance to move, the power supply device is electrically connected with the driving unit, the input end of the power generation device is connected with the driving unit, and the energy storage device is electrically connected with the power generation device, the crane energy storage monitoring and scheduling system further comprises a controller, a potentiometer, a monitoring module, a second relay or a first relay and a clutch, the controller controls the power supply device to be electrically connected with the energy storage device or a power grid, the energy storage device is provided with a battery management module, the battery management module is used for monitoring the energy storage device and sending first monitoring information to the controller, a rotating shaft of the potentiometer is connected with a transmission shaft of the lifting appliance, the potentiometer is, the monitoring module is used for monitoring the power supply device, the energy storage device and the power grid and sending second monitoring information to the controller, the electromagnetic clutch is connected between the input end of the power generation device and the driving unit, the first relay is electrically connected between the controller and the electromagnetic clutch, or a first coil terminal of the second relay is electrically connected with the controller, a first contact terminal of the second relay is electrically connected with the power generation device, and a second contact terminal of the second relay is electrically connected with the energy storage device.
Therefore, the potentiometer is connected with the transmission shaft of the lifting appliance, so that the potentiometer can acquire the moving state information and the position state information of the lifting appliance in real time, and the controller can be switched to supply power to the power supply device through the power grid or the energy storage device according to the moving state and the position state of the lifting appliance. The battery management module is used for monitoring the energy storage device in real time so as to ensure that each charging and discharging of the energy storage device can be safely and reliably executed. The monitoring module is used for carrying out overall monitoring on the crane energy storage monitoring and scheduling system, such as power grid frequency, charging and discharging amount and charging and discharging current of the energy storage device, alternating current and direct current side voltage and the like, so that when the power grid, the energy storage device, the converter and the like have faults, a power supply of the power supply device can be timely switched, and safety and reliability of the crane energy storage monitoring and scheduling system are improved. The second relay or the first relay and the electromagnetic clutch are arranged, so that when the energy storage device is in a discharging state, the power generation device can be cut off from charging the energy storage device, and the charging and discharging safety of the energy storage device is guaranteed. When the lifting appliance lifts the container, the controller can control the energy storage device or the power grid to supply power to the power supply device according to the state of the energy storage device and the state of the power grid; when the lifting appliance is lowered or the lifting appliance is lowered to the container, the controller controls whether the power generation device charges the energy storage device or not according to the state of the energy storage device and controls the power grid to supply power to the power supply device. Through the design of the crane energy storage monitoring and dispatching system, the safety and the reliability of the crane energy storage monitoring and dispatching system are improved, and the energy storage device can be effectively and reliably controlled.
Preferably, the crane energy storage monitoring and dispatching system further comprises a third relay, a second coil terminal of the third relay is electrically connected with the controller, a third contact terminal of the third relay is electrically connected with a power grid, and a fourth contact terminal of the third relay is electrically connected with the power supply device.
As can be seen from the above, by providing the third relay between the power grid and the power supply device and controlling the third relay by the controller, the third relay can quickly and reliably connect or disconnect the power grid and the power supply device.
Another preferred scheme is that the crane energy storage monitoring and dispatching system further comprises a position monitoring device, the position monitoring device is connected with the driving unit, and the position monitoring device is used for monitoring whether the lifting appliance is at the upper limit position or the lower limit position and sending a third monitoring signal to the controller.
It can be seen from above that, add position monitoring devices and can assist the potentiometre to monitor the upper limit position and the lower limit position of hoist to when the potentiometre broke down, position monitoring devices can replace the potentiometre so that hoist energy storage control dispatch system can continue to keep normal operation.
The further scheme is that the crane energy storage monitoring and scheduling system further comprises a touch display screen, a storage device and a cloud server, wherein the touch display screen is electrically connected with the controller, information interaction is carried out between the storage device and the controller, and information interaction is carried out between the cloud server and the controller.
Therefore, the touch display screen can facilitate an operator to input related control instructions and can display monitoring information of the battery management module, the monitoring module and the like; the storage device is used for storing relevant monitoring information so as to be convenient for an operator to consult; and the cloud server is arranged, so that the crane energy storage monitoring and dispatching system has a remote monitoring function, and an operator can remotely check data such as energy conditions, fault information and the like of the crane energy storage monitoring and dispatching system through the operation terminal.
In order to achieve another object of the present invention, the present invention provides a scheduling method of a crane energy storage monitoring and scheduling system, which is applied to the crane energy storage monitoring and scheduling system, wherein the scheduling method includes: judging the position of the lifting appliance; when the lifting appliance is located at a preset lower limit position, the battery management module monitors whether the electric quantity of the energy storage device is larger than or equal to a first preset electric quantity threshold value, if so, the energy storage device is controlled to be electrically connected with the power supply device, and the electric connection between a power grid and the power supply device is cut off; when the lifting appliance is located at the preset upper limit position, the power grid is controlled to be electrically connected with the power supply device, the electrical connection between the energy storage device and the power supply device is cut off, the battery management module monitors whether the electric quantity of the energy storage device is smaller than or equal to a second preset electric quantity threshold value, and if yes, the power generation device is controlled to charge the energy storage device.
Therefore, the scheduling method can control the charging and discharging processing of the energy storage device through the monitoring data of the energy storage device by the battery management module before the energy storage device is charged and discharged, so that when the lifting appliance needs to be lifted from the lower limit position to the upper limit position, the energy storage device is connected to the power supply device of the crane to supply power to the power supply device on the premise that the energy storage device has sufficient electric quantity, and when the energy storage device does not have the electric quantity for lifting the lifting appliance from the lower limit position to the upper limit position, a power grid is connected to the power supply device to supply power to the power supply device, so that the lifting safety of the lifting appliance is ensured; when need transfer the hoist to the lower limit position from the upper limit position, acquire the monitoring data of battery management module to energy memory electric quantity earlier, in order when energy memory's electric quantity is less than the second and predetermines the electric quantity threshold value, just make power generation facility charge to energy memory, thereby avoid energy memory overcharge problem to appear, play the guard action to energy memory, can also make energy memory accomplish once the operation of charging simultaneously after, can accomplish a discharge operation next, with the better effect of practicing thrift the energy consumption that plays. In addition, the position of the lifting appliance is judged in advance through the potentiometer, so that the lifting appliance can be firstly butted with the power generation device and a driving unit of the crane before the lifting appliance is ready to be placed downwards, or the power generation device is electrically connected with the energy storage device, the defect of power generation hysteresis of the power generation device when the lifting appliance is placed downwards is overcome, and the power generation amount of the power generation device is ensured.
Further, the scheduling method further includes: before the lifting appliance does not reach the upper limit position or the lower limit position, judging the state of the lifting appliance; when the lifting appliance is in a lifting state, judging whether the electric quantity of the battery pipeline module monitoring energy storage device is larger than or equal to a third preset electric quantity threshold value, if so, controlling the energy storage device to be electrically connected with the power supply device, and cutting off the electrical connection between the power grid and the power supply device; when the lifting appliance is in a lowering state, the power grid is controlled to be electrically connected with the power supply device, the electrical connection between the energy storage device and the power supply device is cut off, whether the electric quantity of the energy storage device monitored by the battery management module is smaller than or equal to a fourth preset electric quantity threshold value or not is judged, and if yes, the power generation device is controlled to charge the energy storage device.
Therefore, by judging the state of the lifting appliance, when the lifting appliance is in a lifting state but the position is not below the starting point or not above the starting point as the end point, and when the lifting appliance is in a lowering state but the position is not above the starting point or not below the end point, the crane energy storage monitoring and dispatching system can switch a power grid or an energy storage device to supply power to a power supply device of the crane in time according to the state of the lifting appliance, and control whether the power generation device charges the energy storage device or not.
Preferably, before the steps of determining the position of the spreader and determining the state of the spreader, the scheduling method further includes: acquiring a first parameter value of a potentiometer when the lifting appliance is at a lower limit position; and acquiring a second parameter value of the potentiometer when the lifting appliance is at the upper limit position.
Therefore, the crane energy storage monitoring and dispatching system can accurately judge the position state and the moving state of the lifting appliance by recording the first parameter value of the lifting appliance at the potentiometer at the lower limit position and recording the second parameter value of the lifting appliance at the potentiometer at the upper limit position.
In another preferred embodiment, before the step of monitoring whether the electric quantity of the energy storage device is greater than or equal to the first preset electric quantity threshold and the third preset electric quantity threshold, the scheduling method further includes: judging whether the battery management module is abnormal or not, if so, controlling the power grid to be electrically connected with the power supply device, and cutting off the electrical connection between the energy storage device and the power supply device; before the step of monitoring whether the electric quantity of the energy storage device is less than or equal to the second preset electric quantity threshold value or the fourth preset electric quantity threshold value, the scheduling method further includes: and judging whether the battery management module is abnormal or not, and if so, canceling the power generation device to charge the energy storage device.
Therefore, before the energy storage device is charged and discharged, whether the battery management module is abnormal or not is detected, and when the battery management module is abnormal, the charging and discharging processing of the energy storage device is stopped, so that the situation that the state of the energy storage device is judged by mistake due to the fact that the battery management module feeds back wrong monitoring data in the abnormal state is prevented, and safety production accidents are avoided.
Another preferred scheme is that after the step of monitoring whether the electric quantity of the energy storage device is greater than or equal to the first preset electric quantity threshold or the third preset electric quantity threshold, the scheduling method further includes: judging whether the monitoring module is abnormal or not, if so, controlling the power grid to be electrically connected with the power supply device, and cutting off the electrical connection between the energy storage device and the power supply device; after the step of monitoring whether the electric quantity of the energy storage device is less than or equal to the second preset electric quantity threshold value or the fourth preset electric quantity threshold value, the scheduling method further includes: and judging whether the monitoring module is abnormal, and if so, canceling the power generation device to charge the energy storage device.
It can be seen from the above that, because the monitoring module is used for monitoring the crane energy storage monitoring and dispatching system globally, therefore, before energy storage device carries out charge and discharge and energy storage device carries out the charging or the discharge in-process, detect earlier whether detection module is unusual to when monitoring module appears unusually, preferably adopt the electric wire netting to supply power for the power supply unit of crane, in order to avoid can't in time be discover when energy storage device breaks down or unusually, thereby guarantee the security and the reliability of crane energy storage monitoring and dispatching system work.
Another preferred scheme is that the scheduling method further includes: when the energy storage device is electrically connected with the power supply device, the battery management module and the monitoring module are respectively switched to a discharging mode; when the power generation device charges the energy storage device, the battery management module and the monitoring module are respectively switched to a charging mode.
Therefore, the battery management module and the monitoring module are respectively switched to the corresponding charging mode or discharging mode according to the charging state or discharging state of the energy storage device, so that the battery management module can monitor the energy storage device in different states in a more targeted manner, and the monitoring module can monitor the crane energy storage monitoring and scheduling system in a more targeted manner according to the charging and discharging state of the energy storage device.
Drawings
Fig. 1 is a system block diagram of a first embodiment of a crane energy storage monitoring and dispatching system of the invention.
Fig. 2 is a flowchart of a scheduling method of the crane energy storage monitoring and scheduling system according to a first embodiment of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
The first embodiment of the crane energy storage monitoring and dispatching system comprises:
referring to fig. 1, the crane energy storage monitoring and dispatching system 100 includes a crane, a power generation device 2, an energy storage device 3, a controller 4, a potentiometer 5, a monitoring module 6, a touch display screen 71, a storage device 72, a nonvolatile memory chip 73, and a cloud server 74. The crane comprises a rack, a driving unit, a lifting appliance and a power supply device 11, wherein the driving unit and the lifting appliance are arranged on the rack. The driving unit is used for driving the lifting appliance to move, for example, driving the lifting appliance to lift (i.e., controlling the lifting appliance to move upwards) and driving the lifting appliance to lower (i.e., controlling the cutter to move downwards); in addition, the driving unit can also control the rack to move, for example, when the crane is a portal crane, the driving unit can drive the rack to move along the rail, and can also drive the transverse moving mechanism of the rack to drive the lifting appliance to move along the direction vertical to the extending direction of the rail and the horizontal direction; when the crane is a fixed rotary crane, the driving unit can rotate a cantilever of the crane frame, so that the lifting appliance is driven to rotate and move in a certain space. The power supply device 11 is electrically connected to the drive unit to supply power to the drive unit.
The input of the power generation device 2 is connected to the drive unit so that the drive unit can drive the power generation device 2 through the input of the power generation device 2 for power generation work. The power generation device 2 may preferably be a generator, and when the generator is connected to the driving unit, the rotor of the generator may be connected to the driving source or the transmission mechanism of the driving unit, for example, when the driving source of the driving unit is a motor, the rotor of the generator may be connected to the motor shaft of the motor, so that the motor shaft of the motor can drive the rotor of the generator to rotate; or the rotor of the generator is connected with the rotating shaft of a certain link in the transmission mechanism, so that the rotating shaft can drive the rotor of the generator to rotate, and the power generation operation of the generator is realized.
The energy storage device 3 is electrically connected to the power generation device 2, so that when the power generation device 2 performs power generation operation, generated electric energy can be transmitted to the battery pack 32 of the energy storage device 3 to be stored, and the electric energy can be used by the power supply device 11 of the crane. A battery management module 31 is arranged in the energy storage device 3, and the battery management module 31 is connected with the controller 4 through a first CAN communication circuit. The battery management module 31 is used for monitoring, acquiring, processing and storing information of the battery pack 32 in the operation process in real time, for example, the SOC value, the remaining capacity, the cell temperature, the battery voltage and the like of the battery pack 32, and sends first monitoring information to the controller 4, so that the controller 4 can manage and maintain the battery pack 32 according to the first monitoring information, avoid the phenomenon of overcharge and overdischarge of the battery pack 32, and enable the controller 4 to know the current electric quantity of the battery pack 32, so that the controller 4 can control whether the energy storage device 3 supplies power to the power supply device 11 and control whether the power generation device 2 charges the energy storage device 3.
The potentiometer 5 is used for acquiring position state information and motion state information of the lifting appliance and sending the position information to the controller 4. Wherein, the pivot of potentiometre 5 is connected with the transmission shaft of hoist among the drive mechanism for this transmission shaft can drive the pivot of potentiometre 5 and rotate, with the position state and the motion state of record hoist. The potentiometer 5 is connected with the controller 4 through an analog-to-digital conversion circuit, when the potentiometer 5 is used, the potentiometer 5 needs to be set firstly, for example, the lifting direction of the lifting appliance is set to be the forward direction, the lowering direction of the lifting appliance is set to be the reverse direction, then the lifting appliance is lowered to the lower limit position, the first parameter value of the potentiometer 5 is recorded, then the lifting appliance is lifted to the upper limit position, the second parameter value of the potentiometer 5 is recorded, wherein the first parameter value and the second parameter value can be corresponding resistance values generated by the potentiometer 5 according to the position of the lifting appliance, and in the embodiment, the first parameter value is smaller than the second parameter value.
The monitoring module 6 is configured to perform global monitoring on the crane energy storage monitoring and scheduling system 100, for example, monitor voltage on the ac/dc side, monitor charge/discharge current, charge/discharge voltage and charge/discharge electric quantity of the energy storage device 3, monitor frequency of the power grid 12, and the like. In this embodiment, the monitoring module 6 preferably employs a digital signal processor, and the monitoring module 6 is connected to the controller 4 through a second CAN communication circuit to send second monitoring information to the controller 4 through the second CAN communication circuit.
The controller 4 is further configured to control the power supply device 11 of the crane to be electrically connected to the energy storage device 3 or the power grid 12, and in this embodiment, the crane energy storage monitoring and dispatching system 100 further includes an electromagnetic clutch, a first relay 81, and a third relay 82, the electromagnetic clutch is connected between the input end of the power generation device 2 and the driving unit, a third coil terminal of the first relay 81 is electrically connected to the first I/O output terminal of the controller 4, a fifth contact terminal of the first relay 81 is electrically connected to the power supply device 11, and a sixth contact terminal of the first relay 81 is electrically connected to the electromagnetic clutch. When the input end of the power generation device 2 needs to be controlled to be connected to the driving unit to be driven by the driving unit, the controller 4 controls the first relay 81 to be in a conducting state, so that the electromagnetic clutch is closed to connect the input end of the power generation device 2 to the driving unit, and at the moment, the power generation device 2 can generate power and charge the energy storage device 3. The second coil terminal of the third relay 82 is electrically connected to the second I/O output terminal of the controller 4, the third contact terminal of the third relay 82 is electrically connected to the grid 12, and the fourth contact terminal of the third relay 82 is electrically connected to the power supply device 11.
Through setting up first relay 81 and electromagnetic clutch for when energy memory 3 was in the discharge state, can cut off power generation facility 2 to energy memory 3's the security of charging and discharging, assurance energy memory 3. When the lifting appliance lifts the container, the controller 4 can control the energy storage device 3 or the power grid 12 to supply power to the power supply device 11 according to the state of the energy storage device 3 and the state of the power grid 12; when the lifting appliance is lowered or the lifting appliance is used for lowering the container, the controller 4 controls the power generation device 2 to charge the energy storage device 3 according to the state of the energy storage device 3 and controls the power grid 12 to supply power to the power supply device 11; and a third relay 82 is arranged between the power grid 12 and the power supply device 11 and is controlled by the controller 4, so that the power grid 12 can be quickly and reliably switched on to the power supply device 11 through the third relay 82, the power grid 12 can be enabled to supply power to the power supply device 11, or the power grid 12 can be disconnected from the power supply device 11, and the power supply to the power supply device 11 through the power grid 12 can be disconnected.
Further, the crane energy storage monitoring and dispatching system 100 further comprises a position monitoring device 9, the position monitoring device is connected with the driving unit, and the position monitoring device 9 is used for monitoring the position of the lifting appliance, so as to assist the controller 4 to judge whether the lifting appliance is at the upper limit position or the lower limit position, and send a third monitoring signal to the controller 4. The position monitoring device 9 may be disposed in various ways, for example, an encoder may be connected to the driving source, the transmission mechanism or a transmission shaft of the lifting appliance, and the encoder is electrically connected to the controller 4 through an analog-to-digital conversion circuit; for another example, two micro switches may be used to cooperate with the photo coupler, the two micro switches may be respectively disposed at the upper limit stroke position and the lower limit stroke position of a certain component of the transmission mechanism when the transmission mechanism drives the hanger to move to the upper limit position and the lower limit position, and the two micro switches are connected in parallel to be connected to the I/O input terminal of the controller 4 through the photo coupler, so as to realize the detection of the upper limit position and the lower limit position of the hanger. It should be noted that the monitoring devices and the connection method adopted by the position monitoring device 9 are well known to those skilled in the art, and therefore, they are not described in detail herein.
The touch display screen 71 is connected with the controller 4 through an RS232 communication circuit, and the touch display screen 71 is used for displaying monitoring information of the battery management module 31, the monitoring module 6 and the like, and is also used for an operator to send a related control instruction or a setting instruction to the controller 4. The storage device 72 is used for information interaction with the controller 4, specifically, the storage device 72 is connected with the controller 4 through an SP I communication circuit, and the storage device 72 is used for storing relevant monitoring information for being referred by an operator. Information interaction is carried out between the cloud server 74 and the controller 4, specifically, the cloud server 74 is connected with the controller 4 through the ethernet for communication, so that the crane energy storage monitoring and dispatching system 100 has a remote monitoring function, and an operator can remotely check data such as energy conditions and fault information of the crane energy storage monitoring and dispatching system 100 through an operation terminal. The nonvolatile memory chip 73 is electrically connected with the controller 4 through the I ic communication circuit, and the nonvolatile memory chip 73 is used for storing key data of the operation of the crane energy storage monitoring and dispatching system 100 and dispatching the data when the crane energy storage monitoring and dispatching system 100 is started to ensure the normal operation of the crane energy storage monitoring and dispatching system 100. It should be noted that the controller 4 is preferably an embedded chip, and the nonvolatile memory chip is preferably an EEPROM chip.
In summary, the potentiometer is connected with the transmission shaft of the lifting appliance, so that the potentiometer can acquire motion state information and position state information of the lifting appliance in real time, and the controller can be switched to supply power to the power supply device through the power grid or the energy storage device according to the motion state and the position state of the lifting appliance. The battery management module is used for monitoring the energy storage device in real time so as to ensure that each charging and discharging of the energy storage device can be safely and reliably executed. The monitoring module is used for carrying out overall monitoring on the crane energy storage monitoring and scheduling system, such as power grid frequency, charging and discharging amount and charging and discharging current of the energy storage device, alternating current and direct current side voltage and the like, so that when the power grid, the energy storage device, the converter and the like have faults, a power supply of the power supply device can be timely switched, and safety and reliability of the crane energy storage monitoring and scheduling system are improved. The second relay or the first relay and the electromagnetic clutch are arranged, so that when the energy storage device is in a discharging state, the energy storage device can be charged by switching the power generation device, and the charging and discharging safety of the energy storage device is ensured. When the lifting appliance lifts the container, the controller can control the energy storage device or the power grid to supply power to the power supply device according to the state of the energy storage device and the state of the power grid; when the lifting appliance is lowered or the lifting appliance is lowered to the container, the controller controls the power generation device to charge the energy storage device according to the state of the energy storage device and controls the power grid to supply power to the power supply device. Through the design of the crane energy storage monitoring and dispatching system, the safety and the reliability of the crane energy storage monitoring and dispatching system are improved, and the energy storage device can be effectively and reliably controlled.
The second embodiment of the crane energy storage monitoring and dispatching system:
the difference between this embodiment and the first embodiment of the crane energy storage monitoring and dispatching system is that:
in the present embodiment, a second relay is employed instead of the first relay 81 and the electromagnetic clutch, specifically, a first coil terminal of the second relay is electrically connected to the third I/O output terminal of the controller 4, a first contact terminal of the second relay is electrically connected to the power generation device 2, and a second contact terminal of the second relay is electrically connected to the energy storage device 3. When the lifting appliance is in a lifting state, the controller 4 can control the second relay to be in a turn-off state, so that the power generation device 2 is prevented from charging the energy storage device 3, and the energy storage device 3 is protected; when the hoist is in the lowering state, the controller 4 can control the second relay to be in the on state, thereby enabling the power generation device 2 to charge the energy storage device 3.
The first embodiment of the scheduling method of the crane energy storage monitoring and scheduling system comprises the following steps:
the scheduling method of the crane energy storage monitoring and scheduling system is applied to the crane energy storage monitoring and scheduling system 100 in the first embodiment or the second embodiment of the crane energy storage monitoring and scheduling system, and is mainly used for allocating the charging and discharging operations of the energy storage device 3 in the crane energy storage monitoring and scheduling system 100 so as to achieve the effect of efficient energy recycling.
First, a first parameter value of the potentiometer 5 when the spreader is at the lower limit position is acquired, and a second parameter value of the potentiometer 5 when the spreader is at the upper limit position is acquired. For example, the lifting direction of the lifting appliance is set to be a forward direction, the lowering direction of the lifting appliance is set to be a reverse direction, then the lifting appliance can be lowered to a lower limit position, a first parameter value of the potentiometer 5 is recorded, then the lifting appliance is lifted to an upper limit position, and a second parameter value of the potentiometer 5 is recorded, wherein the first parameter value and the second parameter value can both be corresponding resistance values generated by the potentiometer 5 according to the position of the lifting appliance, and in the embodiment, the first parameter value is smaller than the second parameter value. When the lifting appliance moves from the lower limit position to the upper limit position, the real-time parameter value of the potentiometer 5 is increased from the first parameter value to the second parameter value, and when the real-time parameter value of the potentiometer 5 is equal to the second parameter value, the lifting appliance is at the upper limit position; when the lifting appliance moves from the upper limit position to the lower limit position, the real-time parameter value of the potentiometer 5 is reduced from the second parameter value to the first parameter value, and when the real-time parameter value of the potentiometer 5 is equal to the first parameter value, the lifting appliance at the moment is indicated to be at the lower limit position.
The following description is made with reference to the scheduling method of the crane energy storage monitoring and scheduling system 100 in fig. 2:
after the crane energy storage monitoring and dispatching system 100 is started, the position of the spreader is determined, specifically, step S11 is executed to determine whether the spreader is at the lower limit position. When the lifting appliance is judged to be at the lower limit position, the next movement of the lifting appliance is a lifting movement, and therefore, the energy storage device 3 is preferably adopted to supply power to the power supply device 11 of the crane.
Next, step S12 is executed to determine whether the battery management module 31 is abnormal. The battery management module 31 functions to monitor the battery pack 32 of the energy storage device 3, so that it is necessary to detect whether the battery management module 31 is abnormal before the energy storage device 3 is discharged, and when the battery management module 31 is abnormal, step S91 is executed to supply power from the power grid 12 to the power supply device 11, and to cut off the electrical connection between the energy storage device 3 and the power supply device 11, so as to cancel the charging of the energy storage device 3 by the power generation device 2. When the battery management module 31 is abnormal, the controller 4 disconnects the power supply of the energy storage device 3 to the power supply device 11, and controls the third relay 82 to switch to the on state, so as to connect the power grid 12 to the power supply device 11 in time to supply power to the power supply device 11, thereby ensuring the normal operation of the crane energy storage monitoring and dispatching system 100, and in addition, the controller 4 also controls the first relay 81 to switch to the off state, so as to cut off the linkage between the power generation device 2 and the driving unit, or controls the second relay to switch to the off device, so as to stop the power generation device 2 from charging the energy storage device 3. Through the above operation, the state of the energy storage device 3 can be prevented from being judged by mistake due to the fact that the battery management module 31 feeds back wrong monitoring data in an abnormal state, for example, the electric quantity, the cell temperature, the battery voltage and the like of the battery pack 32 are fed back by mistake, and safety production accidents are avoided. Next, step S81 may be executed under the power supply of the power grid 12, to hoist the spreader to the upper limit position, so as to ensure the normal operation of the crane energy storage monitoring and dispatching system 100, and of course, the driving unit of the crane may hoist the spreader to other positions.
When the battery management module 31 is normal, step S31 is executed to determine whether the electric quantity of the energy storage device 3 is greater than or equal to the first preset electric quantity threshold. Through the judgement to energy memory 3 electric quantity, can effectively predict whether energy memory 3's electric quantity is enough to support the once lifting by crane operation of hoist, prevent when energy memory 3's electric quantity is not enough to support the once lifting by crane operation of hoist and electric wire netting 12 can not in time insert power supply unit 11 of hoist, take place the safety in production accident. When the power of the energy storage device 3 is smaller than the first preset power threshold, step S91 is also executed to directly supply power to the power supply device 11 from the power grid 12. For example, when the charge of the energy storage device 3 is less than 20% of the capacity of the battery pack 32, step S91 is performed.
When the electric quantity of the energy storage device 3 is greater than or equal to the first preset electric quantity threshold, step S41 is executed to determine whether the monitoring module 6 is normal. The monitoring module 6 plays a role in globally monitoring the start of the crane energy storage monitoring and scheduling system 100, such as the supply current and the supply voltage when the energy storage device 3 supplies power to the power supply device 11 of the crane, and therefore, before the energy storage device 3 performs the discharging operation, the state of the monitoring module 6 needs to be detected. When there is an abnormality in the monitoring module 6, step S91 is also executed, and the power supply device 11 is directly supplied with power from the power grid 12.
When the monitoring module 6 is normal, step S51 is executed to switch the battery management module 31 to the discharging mode and switch the monitoring module 6 to the discharging mode. Since the objects monitored by the battery management module 31 and the monitoring module 6 are different when the energy storage device 3 is in the charging state or the discharging state, the controller 4 needs to correspondingly switch the battery management module 31 and the monitoring module 6 to the discharging mode before the energy storage device 3 performs the discharging operation.
Next, step S61 is executed to determine whether the battery management module 31 has switched to the discharging mode and determine whether the monitoring module 6 has switched to the discharging mode. Based on the foregoing, when the battery management module 31 cannot be switched to the discharging mode, the battery management module 31 cannot reliably monitor the energy storage device 3, and similarly, when the monitoring module 6 cannot be switched to the discharging mode, the monitoring module 6 cannot reliably monitor the crane energy storage monitoring and dispatching system 100, so that when the battery management module 31 and/or the monitoring module 6 cannot be switched to the discharging mode, it is preferable to directly supply power to the power supply device 11 from the power grid 12, that is, to execute step S91.
When the battery management module 31 and the monitoring module 6 are both switched to the discharging mode accordingly, step S71 is executed, the energy storage device 3 is electrically connected to the power supply device 11, the power grid 12 is electrically disconnected from the power supply device 11, and the power generation device 2 is cancelled to charge the energy storage device 3. Specifically, the controller 4 controls the third relay 82 to switch to the off state to disconnect the power supply from the power grid 12 to the power supply device 11 of the crane, and at the same time, the controller 4 controls the energy storage device 3 to be electrically connected to the power supply device 11 to supply power to the power supply device 11, and in addition, the controller 4 also controls the first relay 81 to switch to the off state to cut off the linkage between the power generation device 2 and the driving unit, or controls the second relay to switch to the off state to stop the power generation device 2 from charging the energy storage device 3.
Next, step S81 is executed to hoist the spreader to the upper limit position, so as to complete one time of hoisting operation of the spreader, and in this process, if the crane energy storage monitoring and dispatching system 100 is in a normal state, the energy storage device 3 can supply the crane to hoist the cargo through the electric quantity stored by itself, so as to achieve the purpose of saving energy consumption.
When it is determined that the spreader is not at the lower limit position, step S12 is performed to determine whether the spreader is at the upper limit position. When the hanger is determined to be at the upper limit position, the next movement of the hanger is a lowering movement, and therefore, it is preferable that the power supply device 11 of the crane is supplied with power from the power grid 12, the power generation device 2 is connected to the driving unit of the crane, the driving unit drives the power generation device 2 to perform power generation operation, and the amount of power generated by the power generation device 2 is stored in the energy storage device 3.
Specifically, step S22 is executed to determine whether the battery management module 31 is abnormal. When there is an abnormality in the battery management module 31, step S92 is executed to supply power from the grid 12 to the power supply device 11, and to cut off the electrical connection between the energy storage device 3 and the power supply device 11, and to cancel the charging of the energy storage device 3 by the power generation device 2. When the battery management module 31 is abnormal, the controller 4 keeps controlling the third relay 82 to be in the on state and keeps disconnecting the power supply of the energy storage device 3 to the power supply device 11, and at the same time, the controller 4 also controls the first relay 81 to be switched to the off state to cut off the linkage between the power generation device 2 and the driving unit, or controls the second relay to be switched to the off device to stop the power generation device 2 from charging the energy storage device 3. Through the above operation, it can be prevented that the state of the energy storage device 3 is misjudged due to the fact that the battery management module 31 feeds back wrong monitoring data in an abnormal state, for example, the electric quantity, the cell temperature, the battery voltage and the like of the battery pack 32 are fed back by mistake, and safety production accidents are avoided. Next, step S82 may be executed under the power supply of the power grid 12, to hoist the spreader to the lower limit position, so as to ensure the normal operation of the crane energy storage monitoring and dispatching system 100, and of course, the driving unit of the crane may also lower the spreader to other positions.
When the battery management module 31 is normal, step S32 is executed to determine whether the electric quantity of the energy storage device 3 is less than or equal to a second preset electric quantity threshold. Through the judgement to 3 electric quantities of energy memory, can effectively predict and transfer the in-process at the hoist, whether power generation facility 2 can cause overcharging to energy memory 3 to play the guard action to energy memory 3. When the power of the energy storage device 3 is greater than the second preset power threshold, step S92 is also executed to keep the power grid 12 directly supplying power to the power supply device 11 and to cut off the energy storage device 3 to power on the power supply device 11, and to cancel the charging of the energy storage device 3 by the power generation device 2. For example, when the charge of the energy storage device 3 is greater than 90% of the capacity of the battery pack 32, step S92 is performed.
When the electric quantity of the energy storage device 3 is less than or equal to the second preset electric quantity threshold, step S42 is executed to determine whether the monitoring module 6 is normal. When the monitoring module 6 is abnormal, step S92 is also executed to keep the power grid 12 directly supplying power to the power supply device 11 and to cut off the energy storage device 3 to energize the power supply device 11, and to cancel the charging of the energy storage device 3 by the power generation device 2.
When the monitoring module 6 is normal, step S52 is executed to switch the battery management module 31 to the charging mode and switch the monitoring module 6 to the charging mode. Similarly, since the objects monitored by the battery management module 31 and the monitoring module 6 are different when the energy storage device 3 is in the charging state or the discharging state, the controller 4 needs to correspondingly switch the battery management module 31 and the monitoring module 6 to the charging mode respectively before the energy storage device 3 performs the charging operation.
Next, step S62 is executed to determine whether the battery management module 31 has switched to the charging mode and determine whether the monitoring module 6 has switched to the charging mode. Based on the foregoing, when the battery management module 31 cannot be switched to the charging mode, the battery management module 31 cannot reliably monitor the energy storage device 3, and similarly, when the monitoring module 6 cannot be switched to the charging mode, the monitoring module 6 cannot reliably monitor the crane energy storage monitoring and dispatching system 100, so that when the battery management module 31 and/or the monitoring module 6 cannot be switched to the charging mode, step S92 is executed, so as to maximally ensure that the crane energy storage monitoring and dispatching system 100 can operate safely and normally.
When the battery management module 31 and the monitoring module 6 are both switched to the charging mode accordingly, step S72 is executed, the power grid 12 is electrically connected to the power supply device 11, the power storage device 3 is electrically disconnected from the power supply device 11, and the power generation device 2 is controlled to charge the power storage device 3. Specifically, the controller 4 controls the third relay 82 to switch to the on state, so that the power grid 12 supplies power to the power supply device 11 of the crane, and at the same time, the controller 4 controls the energy storage device 3 to disconnect the electrical connection with the power supply device 11, and in addition, the controller 4 also controls the first relay 81 to switch to the on state, so that the driving unit drives the power generation device 2 to perform power generation operation, and the power generation device 2 charges the energy storage device 3, or controls the second relay to switch to the on state, so that the power generation device 2 charges the energy storage device 3.
Next, step S82 is executed to lower the spreader to the lower limit position, so as to complete one lowering operation of the spreader, in this process, if the crane energy storage monitoring and dispatching system 100 is in a normal state, the power generation device 2 can perform power generation operation under the driving of the driving unit of the crane, and charge the energy storage device 3, so that the energy storage device 3 can supply power to the power supply device 11 of the crane during the next lifting operation of the crane, thereby achieving the purpose of saving energy consumption.
When it is determined that the spreader is not at the upper limit position or the lower limit position, step S13 may be executed to hoist the spreader to the upper limit position or lower the spreader to the lower limit position.
In summary, the scheduling method of the invention can control the charging and discharging processing of the energy storage device through the monitoring data of the energy storage device by the battery management module before the energy storage device is charged and discharged, so that when the hanger needs to be lifted from the lower limit position to the upper limit position, the energy storage device is connected to the power supply device of the crane to supply power to the power supply device on the premise that the energy storage device has sufficient electric quantity, and when the energy storage device does not have the electric quantity for lifting the hanger from the lower limit position to the upper limit position, the power grid is connected to the power supply device to supply power to the power supply device, thereby ensuring the lifting safety of the hanger; when need transfer the hoist to the lower limit position from the upper limit position, acquire the monitoring data of battery management module to energy memory electric quantity earlier, in order when energy memory's electric quantity is less than the second and predetermines the electric quantity threshold value, just make power generation facility charge to energy memory, thereby avoid energy memory overcharge problem to appear, play the guard action to energy memory, can also make energy memory accomplish once the operation of charging simultaneously after, can accomplish a discharge operation next, with the better effect of practicing thrift the energy consumption that plays. In addition, the position of the lifting appliance is judged in advance through the potentiometer, so that the lifting appliance can be firstly butted with the power generation device and a driving unit of the crane before the lifting appliance is ready to be placed downwards, or the power generation device is electrically connected with the energy storage device, the defect of power generation hysteresis of the power generation device when the lifting appliance is placed downwards is overcome, and the power generation amount of the power generation device is ensured.
The second embodiment of the scheduling method of the crane energy storage monitoring and scheduling system comprises the following steps:
the present embodiment is different from the first embodiment of the scheduling method in that:
in this embodiment, step S13 of the first embodiment is eliminated, and the scheduling method further includes the steps of:
before the lifting appliance does not reach the upper limit position or the lower limit position, the state of the lifting appliance can be judged, and the energy storage device 3 is controlled to carry out charging operation or discharging operation according to the state of the lifting appliance.
For example, when the lifting appliance is in a lifting state, whether the electric quantity of the battery pipeline module monitoring energy storage device 3 is larger than or equal to a third preset electric quantity threshold value is judged, if yes, the energy storage device 3 is controlled to be electrically connected with the power supply device 11, and the electric connection between the power grid 12 and the power supply device 11 is cut off; when the lifting appliance is in a lowering state, the power grid 12 is controlled to be electrically connected with the power supply device 11, the electrical connection between the energy storage device 3 and the power supply device 11 is cut off, then, whether the electric quantity of the energy storage device 3 monitored by the battery management module 31 is smaller than or equal to a fourth preset electric quantity threshold value or not is judged, and if yes, the power generation device 2 is controlled to charge the energy storage device 3.
When the spreader is in the lifting state but the spreader is not at the starting point below the limit or at the ending point above the limit, step S21, step S31, step S41, step S51, step S61, step S71, step S81 and step S91 may be executed according to the scheduling method of the first embodiment, and when step S31 is executed, the determination method of step S31 in the first embodiment is changed to determine whether the battery pipe module monitors the electric quantity of the energy storage device 3 to be greater than or equal to the third preset electric quantity threshold, so that repeated description is omitted here.
When the spreader is in the lowering state but the spreader is not at the starting point above the limit or at the ending point below the limit, step S22, step S32, step S42, step S52, step S62, step S72, step S82 and step S91 may be executed according to the scheduling method of the first embodiment, and when step S32 is executed, the determination method of step S31 in the first embodiment is changed to determine whether the battery management module 31 monitors the electric quantity of the energy storage device 3 to be less than or equal to the fourth preset electric quantity threshold, so that the description is not repeated here.
In summary, through the judgment of the state of the lifting appliance, when the lifting appliance is in the lifting state but not below the limit position as the starting point or not above the limit position as the end point, and when the lifting appliance is in the lowering state but not above the limit position as the starting point or not below the limit position as the end point, the crane energy storage monitoring and dispatching system can switch the power grid or the energy storage device to supply power to the power supply device of the crane in time according to the state of the lifting appliance, and control whether the power generation device charges the energy storage device or not.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.

Claims (10)

1. The crane energy storage monitoring and dispatching system comprises
The crane comprises a driving unit, a lifting appliance and a power supply device, wherein the driving unit drives the lifting appliance to move, and the power supply device is electrically connected with the driving unit;
the input end of the power generation device is connected with the driving unit;
the energy storage device is electrically connected with the power generation device;
the crane energy storage monitoring and dispatching system is characterized by further comprising:
the controller controls the power supply device to be electrically connected with the energy storage device or a power grid, the energy storage device is provided with a battery management module, and the battery management module is used for monitoring the energy storage device and sending first monitoring information to the controller;
the rotating shaft of the potentiometer is connected with the transmission shaft of the lifting appliance, and the potentiometer is used for acquiring the position state information of the lifting appliance and sending the position information to the controller;
the monitoring module is used for monitoring the power supply device, the energy storage device and the power grid and sending second monitoring information to the controller;
a first relay and an electromagnetic clutch, the electromagnetic clutch is connected between the input end of the power generation device and the driving unit, the first relay is electrically connected between the controller and the electromagnetic clutch, or
And a first coil terminal of the second relay is electrically connected with the controller, a first contact terminal of the second relay is electrically connected with the power generation device, and a second contact terminal of the second relay is electrically connected with the energy storage device.
2. The crane energy storage monitoring and dispatching system of claim 1, wherein:
the crane energy storage monitoring and dispatching system further comprises a third relay, a second coil terminal of the third relay is electrically connected with the controller, a third contact terminal of the third relay is electrically connected with the power grid, and a fourth contact terminal of the third relay is electrically connected with the power supply device.
3. The crane energy storage monitoring and dispatching system of claim 1, wherein:
the crane energy storage monitoring and dispatching system further comprises a position monitoring device, the position monitoring device is connected with the driving unit and used for monitoring whether the lifting appliance is located at an upper limit position or a lower limit position and sending a third monitoring signal to the controller.
4. The crane energy storage monitoring and dispatching system according to any one of claims 1 to 3, wherein:
the crane energy storage monitoring and scheduling system further comprises:
the touch display screen is electrically connected with the controller;
the storage device is in information interaction with the controller;
and the cloud server is in information interaction with the controller.
5. The scheduling method of the crane energy storage monitoring and scheduling system is applied to the crane energy storage monitoring and scheduling system as claimed in any one of claims 1 to 4, and is characterized by comprising the following steps:
judging the position of the lifting appliance;
when the lifting appliance is located at a preset lower limit position, the battery management module monitors whether the electric quantity of the energy storage device is larger than or equal to a first preset electric quantity threshold value, if so, the energy storage device is controlled to be electrically connected with the power supply device, and the electric connection between the power grid and the power supply device is cut off;
when the lifting appliance is located at a preset upper limit position, the power grid is controlled to be electrically connected with the power supply device, the electrical connection between the energy storage device and the power supply device is cut off, the battery management module monitors whether the electric quantity of the energy storage device is smaller than or equal to a second preset electric quantity threshold value, and if yes, the power generation device is controlled to charge the energy storage device.
6. The scheduling method of claim 5, wherein:
the scheduling method further comprises the following steps:
before the lifting appliance does not reach the upper limit position or the lower limit position, judging the state of the lifting appliance;
when the lifting appliance is in a lifting state, judging whether the electric quantity of the energy storage device monitored by the battery pipeline module is greater than or equal to a third preset electric quantity threshold value, if so, controlling the energy storage device to be electrically connected with the power supply device, and cutting off the electrical connection between the power grid and the power supply device;
when the lifting appliance is in a lowering state, the power grid is controlled to be electrically connected with the power supply device, the electrical connection between the energy storage device and the power supply device is cut off, whether the electric quantity of the energy storage device monitored by the battery management module is smaller than or equal to a fourth preset electric quantity threshold value or not is judged, and if yes, the power generation device is controlled to charge the energy storage device.
7. The scheduling method of claim 6, wherein:
before the steps of determining the position of the spreader and determining the state of the spreader, the scheduling method further includes:
acquiring a first parameter value of the potentiometer when the lifting appliance is at the lower limit position;
and acquiring a second parameter value of the potentiometer when the lifting appliance is at the upper limit position.
8. The scheduling method of claim 6, wherein:
before the step of monitoring whether the electric quantity of the energy storage device is greater than or equal to the first preset electric quantity threshold value and the third preset electric quantity threshold value, the scheduling method further includes:
judging whether the battery management module is abnormal or not, if so, controlling the power grid to be electrically connected with the power supply device, and cutting off the electrical connection between the energy storage device and the power supply device;
before the step of monitoring whether the electric quantity of the energy storage device is less than or equal to a second preset electric quantity threshold value or a fourth preset electric quantity threshold value, the scheduling method further includes:
and judging whether the battery management module is abnormal or not, and if so, cancelling the power generation device to charge the energy storage device.
9. The scheduling method of claim 6, wherein:
after the step of monitoring whether the electric quantity of the energy storage device is greater than or equal to the first preset electric quantity threshold value or the third preset electric quantity threshold value, the scheduling method further includes:
judging whether the monitoring module is abnormal or not, if so, controlling the power grid to be electrically connected with the power supply device, and cutting off the electrical connection between the energy storage device and the power supply device;
after the step of monitoring whether the electric quantity of the energy storage device is less than or equal to a second preset electric quantity threshold value or a fourth preset electric quantity threshold value, the scheduling method further includes:
and judging whether the monitoring module is abnormal or not, and if so, cancelling the power generation device to charge the energy storage device.
10. The scheduling method of claim 6, wherein:
the scheduling method further comprises the following steps:
when the energy storage device is electrically connected with the power supply device, the battery management module and the monitoring module are respectively switched to a discharging mode;
when the power generation device charges the energy storage device, the battery management module and the monitoring module are respectively switched to a charging mode.
CN202010713060.3A 2020-07-22 2020-07-22 Crane energy storage monitoring and scheduling system and scheduling method thereof Active CN111817330B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010713060.3A CN111817330B (en) 2020-07-22 2020-07-22 Crane energy storage monitoring and scheduling system and scheduling method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010713060.3A CN111817330B (en) 2020-07-22 2020-07-22 Crane energy storage monitoring and scheduling system and scheduling method thereof

Publications (2)

Publication Number Publication Date
CN111817330A true CN111817330A (en) 2020-10-23
CN111817330B CN111817330B (en) 2021-12-07

Family

ID=72862060

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010713060.3A Active CN111817330B (en) 2020-07-22 2020-07-22 Crane energy storage monitoring and scheduling system and scheduling method thereof

Country Status (1)

Country Link
CN (1) CN111817330B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112875518A (en) * 2021-01-28 2021-06-01 三一汽车起重机械有限公司 Control system and control method for multi-mode plug-in operation of crane

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1807219A (en) * 2006-01-27 2006-07-26 上海振华港口机械（集团）股份有限公司 Energy-saving control system for tyre type gantry container crane
US20080048497A1 (en) * 2006-06-13 2008-02-28 Railpower Technologies Corp. Load-lifting apparatus and method of storing energy for the same
CN101195463A (en) * 2007-12-26 2008-06-11 严小安 Electric power supply system and method for tire type gantry container crane
CN103443016A (en) * 2010-12-22 2013-12-11 特雷克斯起重机德国有限公司 Crane and method for operating a crane using recovery of energy from crane operations as a secondary energy source field
CN103606714A (en) * 2013-11-20 2014-02-26 上海海事大学 Graded limiting device and method for energy storage and discharge of hybrid RTG (radioisotope thermoelectric generator) power battery
CN104467093A (en) * 2014-12-05 2015-03-25 常州基腾电气有限公司 Hybrid power battery pack, electrical control system thereof, crane and system working method
CN104444806A (en) * 2014-12-05 2015-03-25 深圳市安顺节能科技发展有限公司 Dual-power system for recycling crane potential energy
CN107359641A (en) * 2017-07-28 2017-11-17 中车青岛四方车辆研究所有限公司 The potential energy recovery system and its recovery method of crane gear

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1807219A (en) * 2006-01-27 2006-07-26 上海振华港口机械（集团）股份有限公司 Energy-saving control system for tyre type gantry container crane
US20080048497A1 (en) * 2006-06-13 2008-02-28 Railpower Technologies Corp. Load-lifting apparatus and method of storing energy for the same
CN101195463A (en) * 2007-12-26 2008-06-11 严小安 Electric power supply system and method for tire type gantry container crane
CN103443016A (en) * 2010-12-22 2013-12-11 特雷克斯起重机德国有限公司 Crane and method for operating a crane using recovery of energy from crane operations as a secondary energy source field
CN103606714A (en) * 2013-11-20 2014-02-26 上海海事大学 Graded limiting device and method for energy storage and discharge of hybrid RTG (radioisotope thermoelectric generator) power battery
CN104467093A (en) * 2014-12-05 2015-03-25 常州基腾电气有限公司 Hybrid power battery pack, electrical control system thereof, crane and system working method
CN104444806A (en) * 2014-12-05 2015-03-25 深圳市安顺节能科技发展有限公司 Dual-power system for recycling crane potential energy
CN107359641A (en) * 2017-07-28 2017-11-17 中车青岛四方车辆研究所有限公司 The potential energy recovery system and its recovery method of crane gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112875518A (en) * 2021-01-28 2021-06-01 三一汽车起重机械有限公司 Control system and control method for multi-mode plug-in operation of crane

Also Published As

Publication number Publication date
CN111817330B (en) 2021-12-07

Similar Documents

Publication Publication Date Title
CN100443328C (en) Electric power locomotive control power source under voltage protection method and device
CN104638694A (en) Wireless charging system and method for electric cars
CN102700512B (en) Fully automatic electric vehicle battery replacement station
CN105128686B (en) A kind of container terminal self-navigation truck charging ground installation and charging method
CN107065972A (en) A kind of DC charging motor and its temperature control method with charging gun temperature monitoring module
CN107834638A (en) The automatical pilot transportation vehicle charging pile and charging system of a kind of multi-mode
CN107196366A (en) A kind of accumulator on-line maintenance system based on three port charge-discharge machines
CN111817330B (en) Crane energy storage monitoring and scheduling system and scheduling method thereof
CN206374759U (en) The redundancy control system and train of train central control unit
CN105406580A (en) Power supply system and method
JP2007267504A (en) Storage apparatus of crane, crane power supply and power supply facility of crane
CN203611767U (en) Electric automobile and collision safety control system of electric automobile
CN113708441A (en) Power battery control method and device and electric stacking machine
CN111463857B (en) Automatic charging system and automatic charging method of particle detection system
CN113391618A (en) System for analyzing and reporting fault information of vehicle-mounted terminal
JP7432033B2 (en) crane
CN103171939A (en) Lift information processing device
CN103699047A (en) Handling method of fault of automatic electric automobile battery replacement system based on PLC (Programmable Logic Controller) control
CN205998877U (en) A kind of overhead traveling crane for handling anode busbar jacking frame
CN214314641U (en) Voltage monitoring system of AGV charger
CN112340607B (en) Electrical control system and control method for crane
CN207265682U (en) A kind of accumulator on-line maintenance system based on three port charge-discharge machines
CN202542295U (en) Variable-frequency protection system of automatic container
CN204799546U (en) Electric control system and screening machine
CN220923871U (en) Shutdown control system and working machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant