CN117013575A - Electric energy management and control method and device for high-voltage direct current power supply and electric energy management and control system - Google Patents

Electric energy management and control method and device for high-voltage direct current power supply and electric energy management and control system Download PDF

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Publication number
CN117013575A
CN117013575A CN202310412635.1A CN202310412635A CN117013575A CN 117013575 A CN117013575 A CN 117013575A CN 202310412635 A CN202310412635 A CN 202310412635A CN 117013575 A CN117013575 A CN 117013575A
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China
Prior art keywords
energy storage
power supply
battery
standby
storage module
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CN202310412635.1A
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Chinese (zh)
Inventor
延汇文
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Shenzhen Aite Net Energy Co ltd
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Shenzhen Aite Net Energy Co ltd
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Priority to CN202310412635.1A priority Critical patent/CN117013575A/en
Publication of CN117013575A publication Critical patent/CN117013575A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a method and a device for controlling electric energy supplied by high-voltage direct current and an electric energy control system, wherein the method comprises the following steps: determining a power supply response state of the target power supply network, wherein the power supply response state comprises a first response state or a second response state which indicates that the target power supply network is in an electric charge trough or an electric charge peak trough; when the first response state is the first response state, generating a charging instruction of the bidirectional energy storage module and a first-stage standby instruction of the standby battery, switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the standby battery to perform standby dormancy according to the first-stage standby instruction; and when the power supply is in the second response state, generating a discharging instruction of the bidirectional energy storage module, switching the bidirectional energy storage module to a discharging running state according to the discharging instruction, and calling the storage electric quantity of the energy storage battery through the bidirectional energy storage module to supply power to the target power supply network. Therefore, the power supply reliability and the safety can be improved by implementing the invention.

Description

Electric energy management and control method and device for high-voltage direct current power supply and electric energy management and control system
Technical Field
The invention relates to the technical field of electric data management and control, in particular to an electric energy management and control method and device for high-voltage direct current power supply.
Background
Currently, most data centers in various large Internet industries adopt 240V high-voltage direct current power supply systems. The reason for this is that the high-voltage direct current power supply system has high reliability and low cost, and is widely used.
In addition, with the development of energy storage technology, many data centers have a requirement for increasing energy storage functions. Aiming at the current use requirement of users, if a set of energy storage system is additionally added, on one hand, the cost is high and the income is low; on the other hand, two sets of systems operate simultaneously, so that not only can comprehensive loss be increased, but also system calling efficiency can be improved. If the original power supply system is utilized, although the construction cost can be obviously reduced, the original system does not consider the requirement of energy storage, the reliability of the original system can be influenced by directly modifying the system, and the occurrence probability of safety risks during power supply of the system is improved. Therefore, it is important to provide a method for keeping the energy storage function of the power supply system without affecting the power supply reliability and safety of the power supply system.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-voltage direct-current power supply electric energy management and control method and device and an electric energy management and control system, which can realize independent operation of energy storage and standby functions of a power supply system and improve the power supply reliability and safety of the power supply system.
In order to solve the technical problem, a first aspect of the present invention discloses a method for controlling electric energy supplied by high voltage direct current, the method is applied to a target power supply network, the target power supply network includes a bidirectional energy storage module, an energy storage battery and a standby battery, the method includes:
determining a power supply response state corresponding to the target power supply network, wherein the power supply response state comprises a first response state corresponding to the trough of the electric charge or a second response state corresponding to the peak of the electric charge of the target power supply network;
when the target power supply network is determined to be in the first response state, generating a charging instruction for the bidirectional energy storage module and a primary standby instruction for the standby battery, switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the standby battery to be in a standby power dormant state according to the primary standby instruction, wherein the standby battery in the standby power dormant state does not perform battery charging or battery discharging operation;
when the target power supply network is determined to be in the second response state, a discharging instruction aiming at the bidirectional energy storage module is generated, the bidirectional energy storage module is switched to a discharging running state according to the discharging instruction, and the stored electric quantity of the energy storage battery is called through the bidirectional energy storage module to supply power to the target power supply network.
As an optional implementation manner, in the first aspect of the present invention, the target power supply network further includes a backup battery; when the target power supply network is determined to be in the first response state, before the primary standby power instruction for the standby battery is generated, the method further comprises:
judging whether the standby electric quantity of the standby battery is higher than the reference electric quantity corresponding to the preset equipment electric quantity requirement, and triggering and executing the operation of generating the primary standby electric instruction for the standby battery when the standby electric quantity is judged to be higher than the reference electric quantity;
when the standby electric quantity is judged to be lower than or equal to the reference electric quantity, a secondary standby electric instruction aiming at the standby electric battery is generated, the standby electric battery is switched to a standby electric charging state according to the secondary standby electric instruction, when the standby electric battery is in the standby electric charging state, battery charging operation is carried out on the standby electric battery until the standby electric quantity is determined to be higher than the reference electric quantity, and the standby electric battery is switched to the standby electric dormant state.
As an optional implementation manner, in the first aspect of the present invention, when it is determined that the target power supply network is in the second response state, the method further includes:
Judging whether the bidirectional energy storage module is in the discharging operation state, and detecting a power supply state of a power supply line controlled by the target power supply network when the bidirectional energy storage module is in the discharging operation state, wherein the power supply state comprises a fault state corresponding to a power supply fault or a reference operation state opposite to the fault state;
when the power supply state of the power supply line is determined to be the fault state, generating an emergency control instruction for the standby battery, switching the standby battery to a discharge response state according to the emergency control instruction, wherein the standby battery in the discharge response state is used for providing standby running electric quantity for the power supply line;
wherein the standby battery in a non-discharge responsive state does not perform the battery charging or the battery discharging operation.
As an optional implementation manner, in the first aspect of the present invention, when it is determined that the bidirectional energy storage module is not in the discharging operation state, the method further includes:
judging whether the bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, and when judging that the bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, switching the bidirectional energy storage module to the discharging running state again according to the discharging instruction and triggering and executing the operation corresponding to the detection of the power supply state of the power supply line controlled by the target power supply network;
The bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, and the bidirectional energy storage module comprises:
the preset module operation identifier aiming at the bidirectional energy storage module indicates that the bidirectional energy storage module is in a normal operation state at present, the reserve power corresponding to the energy storage battery is higher than the target power supply required by the target power supply network in the current power supply period, and the quality inspection standard rate corresponding to the energy storage battery is high in Yu Jizhun standard rate.
In a first aspect of the present invention, when it is determined that the bidirectional energy storage module and the energy storage battery do not meet a power supply condition for supplying power to the target power supply network, the method further includes:
generating to-be-corrected positive feedback information and a correction processing scheme aiming at the bidirectional energy storage module and the energy storage battery, wherein the to-be-corrected positive feedback information and the correction processing scheme are used for being fed back to a responsible person who processes the target power supply network;
when feedback information which is fed back by the responsible person and aims at the correction processing scheme is detected, correction processing operation is carried out on the bidirectional energy storage module and the energy storage battery according to the feedback information and the correction processing scheme, and the bidirectional energy storage module is triggered to be switched to the discharging running state again according to the discharging instruction, and the operation corresponding to the detection of the power supply state of the power supply line controlled by the target power supply network is triggered to be carried out.
As an optional implementation manner, in the first aspect of the present invention, the bidirectional energy storage module manages a plurality of the energy storage batteries; before the generating the charging instruction for the bidirectional energy storage module, the method further includes:
determining a module switching parameter of the bidirectional energy storage module in the first response state, wherein the module switching parameter is used for switching a module running state of the bidirectional energy storage module, and the module running state comprises a charging energy storage state corresponding to a power supply current allowed to be accessed into the target power supply network or a discharging state for supplying power to the target power supply network based on at least one energy storage battery;
detecting the energy storage requirement of each energy storage battery in the first response state, wherein the energy storage requirement corresponding to each energy storage battery comprises the current remaining battery reserve of the energy storage battery, the electric quantity to be stored and the adaptive access electric parameters, and the adaptive access electric parameters corresponding to each energy storage battery are access current or access voltage for the energy storage battery to execute charging operation adaptation;
the generating a charging instruction for the bidirectional energy storage module includes:
and generating a charging instruction aiming at the bidirectional energy storage module according to the energy storage requirement and the module switching parameter corresponding to each energy storage battery, wherein the charging instruction comprises a sub-charging instruction corresponding to each energy storage battery.
As an optional implementation manner, in the first aspect of the present invention, the bidirectional energy storage module at least includes a voltage reduction submodule, a voltage boosting submodule, and a control chip;
the step-down submodule at least comprises a first mos tube, a target inductance coil, a target capacitor and a first diode, and is used for performing step-down processing operation on input voltage;
the boosting submodule at least comprises a second mos tube, the target inductance coil, an induction resistor, the target capacitor and a second diode, and is used for performing boosting processing operation on input voltage;
the control chip is used for detecting the control requirement of the electric parameter, and executing parameter adjustment on the electric parameter by combining the boosting submodule and/or the step-down submodule according to the control requirement so as to adjust the electric parameter to be matched with the control requirement;
wherein the electrical parameter includes at least one of an input voltage, an output voltage, and an output current, and the control demand includes at least one of a conversion demand for the input voltage, a conversion demand for the output voltage, and a conversion demand for the output current.
The invention discloses a high-voltage direct-current power supply electric energy management and control device, which is applied to a target power supply network, wherein the target power supply network comprises a bidirectional energy storage module, an energy storage battery and a standby battery, and the device comprises:
The determining module is used for determining a power supply response state corresponding to the target power supply network, wherein the power supply response state comprises a first response state corresponding to the trough of the electric charge or a second response state corresponding to the peak of the electric charge of the target power supply network;
the generation module is used for generating a charging instruction aiming at the bidirectional energy storage module and a primary standby instruction aiming at the standby battery when the target power supply network is determined to be in the first response state;
the first response control module is used for switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the standby battery to be in a standby power dormant state according to the primary standby power instruction, wherein the standby battery in the standby power dormant state does not perform battery charging or battery discharging operation;
the generating module is further configured to generate a discharge instruction for the bidirectional energy storage module when it is determined that the target power supply network is in the second response state;
and the second response control module is used for switching the bidirectional energy storage module to a discharging running state according to the discharging instruction and calling the stored electric quantity of the energy storage battery through the bidirectional energy storage module to supply power to the target power supply network.
As an optional implementation manner, in the second aspect of the present invention, the target power supply network further includes a backup battery; the apparatus further comprises:
the first judging module is used for judging whether the standby power quantity of the standby power battery is higher than the reference power quantity corresponding to the preset power requirement or not before the generating module generates the primary standby power instruction for the standby power battery when the target power supply network is in the first response state, and triggering the generating module to execute the operation of generating the primary standby power instruction for the standby power battery when the standby power quantity is higher than the reference power quantity;
the generating module is further configured to generate a second standby power command for the standby power battery when the first judging module judges that the standby power is lower than or equal to the reference power;
the first response control module is further configured to switch the standby battery to a standby charging state according to the second standby power instruction, and when the standby battery is in the standby charging state, perform a battery charging operation on the standby battery until it is determined that the standby power is higher than the reference power, switch the standby battery to the standby power sleep state.
As an alternative embodiment, in the second aspect of the present invention, the apparatus further includes:
the second judging module is used for judging whether the bidirectional energy storage module is in the discharging running state or not when the target power supply network is determined to be in the second response state;
the first detection module is used for detecting the power supply state of the power supply line controlled by the target power supply network when the second judgment module judges that the bidirectional energy storage module is in the discharging operation state, wherein the power supply state comprises a fault state corresponding to the power supply fault or a reference operation state opposite to the fault state;
the generating module is further configured to generate an emergency control instruction for the backup battery when it is determined that the power supply state of the power supply line is the fault state;
the first response control module is further configured to switch the standby battery to a discharge response state according to the emergency control instruction, where the standby battery in the discharge response state is configured to provide standby running electric quantity for the power supply line;
wherein the standby battery in a non-discharge responsive state does not perform the battery charging or the battery discharging operation.
In a second aspect of the present invention, as an optional implementation manner, the second judging module is further configured to judge, when it is judged that the bidirectional energy storage module is not in the discharging operation state, whether the bidirectional energy storage module and the energy storage battery meet a power supply condition for supplying power to the target power supply network;
the first response control module is further configured to, when the second judging module judges that the bidirectional energy storage module and the energy storage battery meet a power supply condition for supplying power to the target power supply network, switch the bidirectional energy storage module to the discharge running state according to the discharge instruction and trigger and execute an operation corresponding to the detection of the power supply state of the power supply line controlled by the target power supply network;
the bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, and the bidirectional energy storage module comprises:
the preset module operation identifier aiming at the bidirectional energy storage module indicates that the bidirectional energy storage module is in a normal operation state at present, the reserve power corresponding to the energy storage battery is higher than the target power supply required by the target power supply network in the current power supply period, and the quality inspection standard rate corresponding to the energy storage battery is high in Yu Jizhun standard rate.
As an optional implementation manner, in the second aspect of the present invention, the generating module is further configured to generate to-be-corrected positive feedback information and a correction processing scheme for the bidirectional energy storage module and the energy storage battery, where the to-be-corrected positive feedback information and the correction processing scheme are used for being fed back to a responsible person who processes the target power supply network, when the second judging module judges that the bidirectional energy storage module and the energy storage battery do not meet a power supply condition for supplying power to the target power supply network;
the apparatus further comprises:
and the correction module is used for executing correction processing operation on the bidirectional energy storage module and the energy storage battery according to the feedback information and the correction processing scheme when the feedback information for the correction processing scheme fed back by the responsible person is detected, triggering execution of operation corresponding to the detection of the power supply state of the power supply line controlled by the target power supply network by switching the bidirectional energy storage module to the discharge running state according to the discharge instruction.
As an alternative embodiment, in the second aspect of the present invention, the bidirectional energy storage module controls a plurality of the energy storage cells;
The determining module is further configured to determine, before the generating module generates a charging instruction for the bidirectional energy storage module, a module switching parameter of the bidirectional energy storage module in the first response state, where the module switching parameter is used to switch a module running state of the bidirectional energy storage module, where the module running state includes a charging energy storage state corresponding to a power supply current allowed to access the target power supply network or a discharging state for supplying power to the target power supply network based on at least one energy storage battery;
the apparatus further comprises:
the second detection module is used for detecting the energy storage requirement of each energy storage battery in the first response state, wherein the energy storage requirement corresponding to each energy storage battery comprises the current remaining battery reserve of the energy storage battery, the electric quantity to be stored and the adaptive access electric parameters, and the adaptive access electric parameters corresponding to each energy storage battery are access current or access voltage for executing charging operation adaptation for the energy storage battery;
the mode of generating the charging instruction for the bidirectional energy storage module by the generating module specifically comprises the following steps:
and generating a charging instruction aiming at the bidirectional energy storage module according to the energy storage requirement and the module switching parameter corresponding to each energy storage battery, wherein the charging instruction comprises a sub-charging instruction corresponding to each energy storage battery.
As an optional implementation manner, in the second aspect of the present invention, the bidirectional energy storage module at least includes a voltage reduction submodule, a voltage boosting submodule, and a control chip;
the step-down submodule at least comprises a first mos tube, a target inductance coil, a target capacitor and a first diode, and is used for performing step-down processing operation on input voltage;
the boosting submodule at least comprises a second mos tube, the target inductance coil, an induction resistor, the target capacitor and a second diode, and is used for performing boosting processing operation on input voltage;
the control chip is used for detecting the control requirement of the electric parameter, and executing parameter adjustment on the electric parameter by combining the boosting submodule and/or the step-down submodule according to the control requirement so as to adjust the electric parameter to be matched with the control requirement;
wherein the electrical parameter includes at least one of an input voltage, an output voltage, and an output current, and the control demand includes at least one of a conversion demand for the input voltage, a conversion demand for the output voltage, and a conversion demand for the output current.
The third aspect of the invention discloses another high-voltage direct-current power supply electric energy management and control device, which comprises:
A memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to execute the power management and control method for the high-voltage direct current power supply disclosed in the first aspect of the invention.
A fourth aspect of the present invention discloses a computer storage medium storing computer instructions for executing the method for controlling electric energy of the hvdc power supply disclosed in the first aspect of the present invention when the computer instructions are called.
The fifth aspect of the invention discloses an electric energy management and control system for high-voltage direct current power supply, which comprises a bidirectional energy storage module, an energy storage battery and a standby battery; the electric energy management and control system is used for executing the electric energy management and control method for high-voltage direct current power supply disclosed in the first aspect of the invention.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
in an embodiment of the present invention, there is provided a method for controlling electric energy supplied by high-voltage direct current, including: determining a power supply response state corresponding to the target power supply network, wherein the power supply response state comprises a first response state corresponding to the trough of the electric charge or a second response state corresponding to the peak of the electric charge of the target power supply network;
When the target power supply network is determined to be in a first response state, generating a charging instruction for the bidirectional energy storage module and a primary standby instruction for the standby battery, switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the standby battery in a standby power dormant state according to the primary standby instruction, wherein the standby battery in the standby power dormant state does not perform battery charging or battery discharging operation; when the target power supply network is determined to be in the second response state, a discharging instruction aiming at the bidirectional energy storage module is generated, the bidirectional energy storage module is switched to a discharging running state according to the discharging instruction, and the stored electric quantity of the energy storage battery is called through the bidirectional energy storage module to supply power to the target power supply network. It can be seen that by implementing the invention, the current power supply response state of the target power supply network can be automatically determined, so that the matched processing operation is executed for the corresponding state: on one hand, the charging instruction of the bidirectional energy storage module, the standby power instruction of the standby power battery and the standby power instruction are automatically generated in the first response state of the electric charge trough, so that the charging of the energy storage battery is intelligently carried out under the electric charge trough, the energy storage is reasonably and efficiently carried out, and the intelligent energy storage is realized; meanwhile, two functions of energy storage and standby electricity are divided based on the bidirectional energy storage module, the two functions are not mutually influenced, and the standby electricity battery does not directly participate in charging/discharging when the energy storage battery stores energy, so that the electric quantity of the standby electricity battery can not be called when a target power supply network supplies power normally; and on the other hand, in a second response state of the electric charge wave crest, a discharging instruction aiming at the energy storage module is automatically generated to call the energy storage battery to supply power, at the moment, the power stored in the electric charge wave crest period is released by supplying power, and the power of the target power supply network is maintained by the energy storage battery under the condition that the power of the standby battery is not influenced and directly called. The intelligent dividing management mode of the energy storage and the standby power ensures that the electric quantity of the standby power battery is always maintained at a sufficient electric quantity capable of supplying power when the target power supply network fails, and improves the power supply reliability of the target power supply network; meanwhile, the energy storage and discharge functions of the target power supply network under different electric charge values are reserved, a power grid system is distinguished and directly added, the loss of the newly added power grid system is reduced, and the electric energy management and control efficiency, the management and control accuracy and the reliability of the power grid are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for controlling electric energy supplied by high-voltage direct current according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of another method for controlling power supplied by high voltage DC according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power management and control device for high-voltage dc power supply according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another power management and control device with high-voltage dc power supply according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another embodiment of a high voltage DC powered power management and control device;
fig. 6 is a schematic structural diagram of a bidirectional energy storage module according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or article.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The invention discloses a method and a device for controlling electric energy of high-voltage direct current power supply, which can automatically determine the current power supply response state of a target power supply network, so as to execute matched processing operation aiming at the corresponding state: on one hand, the charging instruction of the bidirectional energy storage module, the standby power instruction of the standby power battery and the standby power instruction are automatically generated in the first response state of the electric charge trough, so that the charging of the energy storage battery is intelligently carried out under the electric charge trough, the energy storage is reasonably and efficiently carried out, and the intelligent energy storage is realized; meanwhile, two functions of energy storage and standby electricity are divided based on the bidirectional energy storage module, the two functions are not mutually influenced, and the standby electricity battery does not directly participate in charging/discharging when the energy storage battery stores energy, so that the electric quantity of the standby electricity battery can not be called when a target power supply network supplies power normally; and on the other hand, in a second response state of the electric charge wave crest, a discharging instruction aiming at the energy storage module is automatically generated to call the energy storage battery to supply power, at the moment, the power stored in the electric charge wave crest period is released by supplying power, and the power of the target power supply network is maintained by the energy storage battery under the condition that the power of the standby battery is not influenced and directly called. The intelligent dividing management mode of the energy storage and the standby power ensures that the electric quantity of the standby power battery is always maintained at a sufficient electric quantity capable of supplying power when the target power supply network fails, and improves the power supply reliability of the target power supply network; meanwhile, the energy storage and discharge functions of the target power supply network under different electric charge values are reserved, a power grid system is distinguished and directly added, the loss of the newly added power grid system is reduced, and the electric energy management and control efficiency, the management and control accuracy and the reliability of the power grid are improved. The following will describe in detail.
Example 1
Referring to fig. 1, fig. 1 is a flow chart of a method for controlling electric energy supplied by high voltage dc according to an embodiment of the present invention. The electric energy management and control method of the high-voltage direct current power supply described in fig. 1 can be applied to a target power supply network, wherein the target power supply network comprises a bidirectional energy storage module, an energy storage battery and a standby battery; the method for controlling the electric energy of the high-voltage direct current power supply described in fig. 1 can also be applied to an electric energy control device of the high-voltage direct current power supply, and the embodiment of the invention is not limited. As shown in fig. 1, the method for controlling electric energy supplied by high voltage direct current may include the following operations:
101. and determining a power supply response state corresponding to the target power supply network, wherein the power supply response state comprises a first response state corresponding to the trough of the electric charge or a second response state corresponding to the peak of the electric charge of the target power supply network.
In the embodiment of the invention, the target power supply network is specifically a high-voltage direct-current power supply network.
In the embodiment of the present invention, optionally, the power supply response state may further include a third response state corresponding to the electric charge flat section, and specifically, assuming that the electric charge corresponding to the electric charge flat section is recorded as 1, the electric charge corresponding to the electric charge trough may be recorded as 0.88; the electric charge corresponding to the electric charge peak can be recorded as 1.02; specific cost values embodiments of the present invention are not limited.
In the embodiment of the present invention, when it is determined that the target power supply network is in the first response state, and before executing step 102 to generate the primary standby power command for the standby power battery, the method further includes:
judging whether the standby electric quantity of the standby battery is higher than the reference electric quantity corresponding to the preset standby electric quantity requirement, and triggering and executing the operation of generating the primary standby electric instruction for the standby battery when the standby electric quantity is judged to be higher than the reference electric quantity;
when the standby electric quantity is judged to be lower than or equal to the reference electric quantity, a secondary standby electric instruction for the standby electric battery is generated, the standby electric battery is switched to a standby electric charging state according to the secondary standby electric instruction, when the standby electric battery is in the standby electric charging state, battery charging operation is carried out on the standby electric battery until the standby electric quantity is determined to be higher than the reference electric quantity, and the standby electric battery is switched to a standby electric dormant state.
In the embodiment of the present invention, the reference electric quantity corresponding to the preset power demand may refer to the highest electric quantity correspondingly consumed for maintaining the operation of the target power supply network after the power supply network is started when the target power supply network fails in the history record, or may refer to a preset value (for example, higher than 90%) that the power supply capacity of each power supply battery is higher than the upper limit storage capacity of the power supply battery, or that the current integrated power supply capacity of all power supply batteries is higher than a preset power supply storage capacity threshold value, etc., which is not limited by the embodiment of the present invention.
Therefore, in the embodiment of the invention, when the standby electricity of the standby electricity battery is higher than the reference electricity, the standby electricity command controls the standby electricity battery to sleep, and the standby electricity battery and the energy storage battery are independently controlled at the moment, so that the standby electricity battery does not participate in charge and discharge, namely the standby electricity of the standby electricity battery is not influenced; when the standby power of the standby power battery is determined to be lower than or equal to the reference power, the charging of the standby power battery is intelligently carried out, so that the standby power battery can be flexibly charged and discharged, the standby power battery can be maintained in a state that the standby power is higher than the reference power, the occurrence of the situation that the fault power supply of the target power supply network cannot be normally carried out due to the failure of the target power supply network and the insufficient standby power of the standby power battery is reduced, and the power supply reliability of the standby power battery is improved.
102. And when the target power supply network is determined to be in the first response state, generating a charging instruction for the bidirectional energy storage module and a primary standby instruction for the standby battery.
In the embodiment of the invention, the bidirectional energy storage module is optional and controls a plurality of energy storage batteries; before generating the charging command for the bidirectional energy storage module in step 102, the method further includes:
determining a module switching parameter of the bidirectional energy storage module in a first response state, wherein the module switching parameter is used for switching a module running state of the bidirectional energy storage module, and the module running state comprises a charging energy storage state corresponding to a power supply current allowed to be accessed into a target power supply network or a discharging state for supplying power to the target power supply network based on at least one energy storage battery;
Detecting the energy storage requirement of each energy storage battery in a first response state, wherein the energy storage requirement corresponding to each energy storage battery comprises the current remaining battery reserve capacity, the electric quantity to be stored and the adaptive access electric parameters of the energy storage battery, and the adaptive access electric parameters corresponding to each energy storage battery are access current or access voltage for the energy storage battery to perform charging operation adaptation;
the manner of generating the charging command for the bidirectional energy storage module in step 102 specifically includes:
and generating a charging instruction aiming at the bidirectional energy storage module according to the energy storage requirement and the module switching parameter corresponding to each energy storage battery, wherein the charging instruction comprises a sub-charging instruction corresponding to each energy storage battery.
In the embodiment of the present invention, referring specifically to fig. 6, fig. 6 is a schematic structural diagram of a bidirectional energy storage module disclosed in the embodiment of the present invention; the bidirectional energy storage module at least comprises a voltage reduction submodule, a voltage boosting submodule and a control chip;
the voltage reducing submodule at least comprises a first mos tube, a target inductance coil, a target capacitor and a first diode, and is used for performing voltage reducing processing operation on input voltage;
the boosting submodule at least comprises a second mos tube, the target inductance coil, an induction resistor, the target capacitor and a second diode, and is used for performing boosting processing operation on input voltage;
The control chip is used for detecting the control requirement of the electric parameter, and executing parameter adjustment on the electric parameter according to the control requirement by combining the boosting submodule and/or the depressurization submodule so as to adjust the electric parameter to be matched with the control requirement;
wherein the electrical parameter comprises at least one of an input voltage, an output voltage, and an output current; the control demand includes at least one of a conversion demand for an input voltage, a conversion demand for an output voltage, and a conversion demand for an output current.
In the embodiment of the invention, the control chip in the bidirectional energy storage module actively or passively collects, analyzes and processes the network data in the target power supply network which is butted by the bidirectional energy storage module, and simultaneously receives the control instruction aiming at the bidirectional energy storage module.
In the embodiment of the invention, the control instruction may refer to a start instruction (i.e., a conversion instruction of input and output voltages) for a voltage-increasing sub-module and a voltage-decreasing sub-module in the bidirectional energy storage module.
In the embodiment of the invention, the bidirectional energy storage module can detect network data of a target power supply network, and can also automatically detect energy storage information of the energy storage batteries controlled by the bidirectional energy storage module, wherein the energy storage information comprises the current residual reserve of the energy storage batteries, the upper limit energy storage energy of each energy storage battery (when the number of the energy storage batteries is more than 1), the charging voltage/current, the discharging voltage/current and the like correspondingly adapted to each energy storage battery; when the bidirectional energy storage module issues charging and discharging instructions aiming at the energy storage batteries, the corresponding issued instructions are instructions based on the energy storage information adaptation of each energy storage battery.
In the embodiment of the invention, on the basis of the standby power function of the existing high-voltage direct current power supply system, the corresponding functions of the energy storage battery and the standby power battery are mutually independent by arranging the bidirectional energy storage module, and meanwhile, the energy storage battery is not directly in butt joint with a power supply circuit of a target power supply network (the power supply network corresponding to the improved high-voltage direct current power supply system) but is subjected to conversion control (comprising charging and discharging of the energy storage battery) of electric data through the bidirectional energy storage module; the energy storage of the energy storage battery is more intelligent, and the power supply efficiency and the power supply reliability of the target power supply network are improved.
103. And switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the battery to be in a standby power dormant state according to the primary standby power instruction.
In the embodiment of the invention, the standby battery in the standby power dormant state does not perform battery charging or battery discharging operation.
104. And when the target power supply network is determined to be in the second response state, generating a discharge instruction aiming at the bidirectional energy storage module.
105. And switching the bidirectional energy storage module to a discharging running state according to the discharging instruction, and calling the storage electric quantity of the energy storage battery through the bidirectional energy storage module to supply power to the target power supply network.
It can be seen that, by implementing the method for controlling the electric energy of the hvdc power supply described in fig. 1, the current power supply response state of the target power supply network can be automatically determined, so as to perform the matched processing operation for the corresponding state: on one hand, the charging instruction of the bidirectional energy storage module, the standby power instruction of the standby power battery and the standby power instruction are automatically generated in the first response state of the electric charge trough, so that the charging of the energy storage battery is intelligently carried out under the electric charge trough, the energy storage is reasonably and efficiently carried out, and the intelligent energy storage is realized; meanwhile, two functions of energy storage and standby electricity are divided based on the bidirectional energy storage module, the two functions are not mutually influenced, and the standby electricity battery does not directly participate in charging/discharging when the energy storage battery stores energy, so that the electric quantity of the standby electricity battery can not be called when a target power supply network supplies power normally; and on the other hand, in a second response state of the electric charge wave crest, a discharging instruction aiming at the energy storage module is automatically generated to call the energy storage battery to supply power, at the moment, the power stored in the electric charge wave crest period is released by supplying power, and the power of the target power supply network is maintained by the energy storage battery under the condition that the power of the standby battery is not influenced and directly called. The intelligent dividing management mode of the energy storage and the standby power ensures that the electric quantity of the standby power battery is always maintained at a sufficient electric quantity capable of supplying power when the target power supply network fails, and improves the power supply reliability of the target power supply network; meanwhile, the energy storage and discharge functions of the target power supply network under different electric charge values are reserved, a power grid system is distinguished and directly added, the loss of the newly added power grid system is reduced, and the electric energy management and control efficiency, the management and control accuracy and the reliability of the power grid are improved.
Example two
Referring to fig. 2, fig. 2 is a flow chart of another power control method for high-voltage dc power supply according to an embodiment of the invention. The electric energy management and control method of the high-voltage direct current power supply described in fig. 2 can be applied to a target power supply network, wherein the target power supply network comprises a bidirectional energy storage module, an energy storage battery and a standby battery; the method for controlling the electric energy of the high-voltage direct current power supply described in fig. 2 can also be applied to an electric energy controlling device of the high-voltage direct current power supply, and the embodiment of the invention is not limited. As shown in fig. 2, the method for controlling the electric energy of the high-voltage direct current power supply may include the following operations:
201. and determining a power supply response state corresponding to the target power supply network, wherein the power supply response state comprises a first response state corresponding to the trough of the electric charge or a second response state corresponding to the peak of the electric charge of the target power supply network.
202. And when the target power supply network is determined to be in the first response state, generating a charging instruction for the bidirectional energy storage module and a primary standby instruction for the standby battery.
203. And switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the battery to be in a standby power dormant state according to the primary standby power instruction.
204. And when the target power supply network is determined to be in the second response state, generating a discharge instruction aiming at the bidirectional energy storage module.
205. And switching the bidirectional energy storage module to a discharging running state according to the discharging instruction, and calling the storage electric quantity of the energy storage battery through the bidirectional energy storage module to supply power to the target power supply network.
In the embodiment of the present invention, the other descriptions of step 201 to step 205 refer to the other specific descriptions of step 101 to step 105 in the first embodiment, and the description of the embodiment of the present invention is omitted.
206. And judging whether the bidirectional energy storage module is in a discharging operation state, and detecting the power supply state of a power supply line controlled by the target power supply network when the bidirectional energy storage module is in the discharging operation state.
In the embodiment of the invention, the power supply state comprises a fault state corresponding to the power supply fault of the power supply line or a reference running state opposite to the fault state.
In the embodiment of the invention, when the power supply state of the power supply line is determined to be the reference running state, the standby battery is controlled to be in the standby power dormant state.
207. And when the power supply state of the power supply line is determined to be a fault state, generating an emergency control instruction for the standby battery.
208. And switching the standby battery to a discharge response state according to the emergency control instruction, wherein the standby battery in the discharge response state is used for providing standby running electric quantity for the power supply line.
In the embodiment of the invention, the standby battery in the non-discharge response state does not perform battery charging or battery discharging operation.
Therefore, the electric energy management and control method of the high-voltage direct current power supply described in fig. 2 is implemented, the independent operation of the two functions of energy storage and standby power is set, the standby power battery is dormant when the target power supply network supplies power normally, and the intelligent emergency call and control instruction is set when the target power supply network fails, so that the intelligent management and control of the energy storage and the standby power is realized, and the power supply reliability, the reliability and the safety of the target power supply network are improved.
In an alternative embodiment, when it is determined that the bidirectional energy storage module is not in the discharging operation state, the method further includes:
judging whether the bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, and when judging that the bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, switching the bidirectional energy storage module to a discharging running state according to a discharging instruction and triggering and executing the operation corresponding to the power supply state of the power supply circuit controlled by the target power supply network;
The bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to a target power supply network, and the bidirectional energy storage module comprises:
the preset module operation identifier aiming at the bidirectional energy storage module indicates that the bidirectional energy storage module is in a normal operation state currently, the reserve power corresponding to the energy storage battery is higher than the target power supply required by the target power supply network in the current power supply period, and the quality detection standard rate corresponding to the energy storage battery is higher than Yu Jizhun standard rate.
In this optional embodiment, optionally, when it is determined that the bidirectional energy storage module and the energy storage battery do not meet a power supply condition for supplying power to the target power supply network, the method further includes:
generating to-be-corrected positive feedback information and a correction processing scheme aiming at the bidirectional energy storage module and the energy storage battery, wherein the to-be-corrected positive feedback information and the correction processing scheme are used for being fed back to a responsible person of a processing target power supply network;
when feedback information which is fed back by a responsible person and aims at the correction processing scheme is detected, correction processing operation is carried out on the bidirectional energy storage module and the energy storage battery according to the feedback information and the correction processing scheme, and operation corresponding to the power supply state of the power supply line controlled by the detection target power supply network is triggered and carried out by triggering and carrying out the switching of the bidirectional energy storage module to the discharging running state according to the discharging instruction.
In the alternative embodiment, after receiving the to-be-corrected positive feedback information and the correction processing scheme, the responsible person analyzes the to-be-corrected feedback information and the correction processing scheme and feeds back the corresponding feedback information; when the feedback information indicates that the correction processing scheme is determined to be executed, the correction processing operation is executed on the bidirectional energy storage module and the energy storage battery according to the correction processing scheme;
when the feedback information indicates that an updated version exists after the correction processing scheme is updated and adjusted by a responsible person, correction processing operation is carried out on the bidirectional energy storage module and the energy storage battery according to the updated version, comparison analysis is carried out on the original correction processing scheme based on the updated version, optimized data are obtained, the optimized data are recorded, and therefore iterative update is carried out on a correction processing algorithm for generating the correction processing scheme.
It can be seen that in this alternative embodiment, a run detection program for the bi-directional energy storage module is provided: whether the bidirectional energy storage module is in a discharging running state or not can be intelligently detected, if not, the bidirectional energy storage module and the energy storage battery are checked according to the power supply condition, so that the fault discovery efficiency of the bidirectional energy storage module and the energy storage battery is improved; further, aiming at the situation that the bidirectional energy storage module and the energy storage battery do not meet the power supply condition, corresponding positive feedback information to be corrected and a correction processing scheme can be automatically generated and fed back to a responsible person, so that the generation efficiency of the positive feedback information to be corrected and the correction processing scheme is improved, and the processing efficiency of the situation that the bidirectional energy storage module and the energy storage battery do not meet the power supply condition is improved.
Example III
Referring to fig. 3, fig. 3 is a schematic structural diagram of a power management and control device for high-voltage dc power supply according to an embodiment of the present invention. The high-voltage direct-current power supply electric energy management and control device can be applied to a target power supply network, wherein the target power supply network comprises a bidirectional energy storage module, an energy storage battery and a standby battery. The high-voltage direct-current power supply electric energy management and control device can be a high-voltage direct-current power supply electric energy management and control terminal, equipment, a system or a server, wherein the server can be a local server, a remote server or a cloud server (also called cloud server), and when the server is a non-cloud server, the non-cloud server can be in communication connection with the cloud server, and the embodiment of the invention is not limited. As shown in fig. 3, the apparatus for controlling electric energy supplied by high voltage direct current may include a determining module 301, a generating module 302, a first response control module 303, and a second response control module 304, where:
the determining module 301 is configured to determine a power supply response state corresponding to the target power supply network, where the power supply response state includes a first response state indicating that the target power supply network is in a corresponding electric charge trough or a second response state indicating that the target power supply network is in a corresponding electric charge peak.
The generating module 302 is configured to generate a charging instruction for the bidirectional energy storage module and a primary standby instruction for the standby battery when it is determined that the target power supply network is in the first response state.
In an embodiment of the present invention, as shown in fig. 4, the apparatus may further include a first judging module 305, where:
the first determining module 305 is configured to determine, when it is determined that the target power supply network is in the first response state and before the generating module 302 generates the primary standby power command for the standby battery, whether the standby power of the standby battery is higher than a reference power corresponding to the preset standby power requirement, and when it is determined that the standby power is higher than the reference power, trigger the generating module 302 to perform the above operation of generating the primary standby power command for the standby battery.
The generating module 302 is further configured to generate a second standby power command for the standby power battery when the first determining module 305 determines that the standby power is lower than or equal to the reference power.
The first response control module 303 is further configured to switch the standby battery to a standby charging state according to the second standby command, and when the standby battery is in the standby charging state, perform a battery charging operation on the standby battery until it is determined that the standby power is higher than the reference power, switch the standby battery to a standby power sleep state.
In the optional embodiment, when the standby power of the standby battery is higher than the reference power, the standby power command controls the standby battery to sleep, and the standby battery and the energy storage battery are independently controlled, so that the standby battery does not participate in charging and discharging, namely the standby power of the standby battery is not influenced; when the standby power of the standby power battery is determined to be lower than or equal to the reference power, the charging of the standby power battery is intelligently carried out, so that the standby power battery can be flexibly charged and discharged, the standby power battery can be maintained in a state that the standby power is higher than the reference power, the occurrence of the situation that the fault power supply of the target power supply network cannot be normally carried out due to the failure of the target power supply network and the insufficient standby power of the standby power battery is reduced, and the power supply reliability of the standby power battery is improved.
The first response control module 303 is configured to switch the bidirectional energy storage module to a charging operation state according to the charging instruction, perform a charging operation on the energy storage battery via the bidirectional energy storage module, and control the battery to be in a standby power sleep state according to the primary standby power instruction, where the standby power battery in the standby power sleep state does not perform a battery charging or discharging operation.
In the embodiment of the invention, the bidirectional energy storage module is optional and controls a plurality of energy storage batteries; the determining module 301 is further configured to determine, before the generating module 302 generates the charging instruction for the bidirectional energy storage module, a module switching parameter of the bidirectional energy storage module in the first response state, where the module switching parameter is used to switch a module running state of the bidirectional energy storage module, where the module running state includes a charging energy storage state corresponding to a supply current allowed to access the target power supply network or a discharging state for supplying power to the target power supply network based on the at least one energy storage battery.
As shown in fig. 4, the apparatus further comprises a second detection module 309, wherein:
the second detection module 309 is configured to detect an energy storage requirement of each energy storage battery in the first response state, where the energy storage requirement corresponding to each energy storage battery includes a current remaining battery reserve of the energy storage battery, an electric quantity to be stored, and an adaptive access electrical parameter, and the adaptive access electrical parameter corresponding to each energy storage battery is an access current or an access voltage adapted for the energy storage battery to perform charging operation.
The manner in which the generating module 302 generates the charging instruction for the bidirectional energy storage module specifically includes:
and generating a charging instruction aiming at the bidirectional energy storage module according to the energy storage requirement and the module switching parameter corresponding to each energy storage battery, wherein the charging instruction comprises a sub-charging instruction corresponding to each energy storage battery.
In the embodiment of the invention, the bidirectional energy storage module at least comprises a voltage reduction submodule, a voltage boosting submodule and a control chip;
the voltage reducing submodule at least comprises a first mos tube, a target inductance coil, a target capacitor and a first diode, and is used for performing voltage reducing processing operation on input voltage;
the boosting submodule at least comprises a second mos tube, a target inductance coil, an induction resistor, a target capacitor and a second diode, and is used for performing boosting processing operation on input voltage;
The control chip is used for detecting the control requirement of the electric parameter, and executing parameter adjustment on the electric parameter according to the control requirement by combining the boosting submodule and/or the depressurization submodule so as to adjust the electric parameter to be matched with the control requirement;
wherein the electrical parameter comprises at least one of an input voltage, an output voltage, and an output current, and the control requirement comprises at least one of a conversion requirement of the input voltage, a conversion requirement of the output voltage, and a conversion requirement of the output current.
The generating module 302 is further configured to generate a discharge instruction for the bidirectional energy storage module when it is determined that the target power supply network is in the second response state.
The second response control module 304 is configured to switch the bidirectional energy storage module to a discharging operation state according to the discharging instruction, and invoke the stored electric quantity of the energy storage battery to supply power to the target power supply network via the bidirectional energy storage module.
It can be seen that, by implementing the power management and control device for hvdc power supply described in fig. 3, the current power supply response state of the target power supply network can be automatically determined, so as to perform the matched processing operation for the corresponding state: on one hand, the charging instruction of the bidirectional energy storage module, the standby power instruction of the standby power battery and the standby power instruction are automatically generated in the first response state of the electric charge trough, so that the charging of the energy storage battery is intelligently carried out under the electric charge trough, the energy storage is reasonably and efficiently carried out, and the intelligent energy storage is realized; meanwhile, two functions of energy storage and standby electricity are divided based on the bidirectional energy storage module, the two functions are not mutually influenced, and the standby electricity battery does not directly participate in charging/discharging when the energy storage battery stores energy, so that the electric quantity of the standby electricity battery can not be called when a target power supply network supplies power normally; and on the other hand, in a second response state of the electric charge wave crest, a discharging instruction aiming at the energy storage module is automatically generated to call the energy storage battery to supply power, at the moment, the power stored in the electric charge wave crest period is released by supplying power, and the power of the target power supply network is maintained by the energy storage battery under the condition that the power of the standby battery is not influenced and directly called. The intelligent dividing management mode of the energy storage and the standby power ensures that the electric quantity of the standby power battery is always maintained at a sufficient electric quantity capable of supplying power when the target power supply network fails, and improves the power supply reliability of the target power supply network; meanwhile, the energy storage and discharge functions of the target power supply network under different electric charge values are reserved, a power grid system is distinguished and directly added, the loss of the newly added power grid system is reduced, and the electric energy management and control efficiency, the management and control accuracy and the reliability of the power grid are improved.
In another alternative embodiment, as shown in fig. 4, the apparatus further includes a second judging module 306, a first detecting module 307, where:
and a second judging module 306, configured to judge whether the bidirectional energy storage module is in a discharging operation state when it is determined that the target power supply network is in the second response state.
The first detection module 307 is configured to detect a power supply state of a power supply line managed by the target power supply network when the second determination module 306 determines that the bidirectional energy storage module is in a discharging operation state, where the power supply state includes a fault state corresponding to a power supply fault or a reference operation state opposite to the fault state.
The generating module 302 is further configured to generate an emergency control instruction for the backup battery when it is determined that the power supply state of the power supply line is a fault state.
The first response control module 303 is further configured to switch the backup battery to a discharge response state according to an emergency control instruction, where the backup battery in the discharge response state is configured to provide a backup running power for the power supply line.
The standby battery in the non-discharge response state does not perform battery charging or battery discharging operation.
Therefore, the electric energy management and control device for high-voltage direct current power supply described in fig. 4 is provided with independent operation of two functions of energy storage and standby power, the standby power battery is dormant when the target power supply network supplies power normally, and the target power supply network is provided with intelligent emergency calling and control instructions when the target power supply network fails, so that intelligent management and control of energy storage and standby power is realized, and the power supply reliability, reliability and safety of the target power supply network are improved.
In yet another alternative embodiment, the second determining module 306 is further configured to determine, when it is determined that the bidirectional energy storage module is not in the discharging operation state, whether the bidirectional energy storage module and the energy storage battery meet a power supply condition for supplying power to the target power supply network.
The first response control module 303 is further configured to, when the second judging module 306 judges that the bidirectional energy storage module and the energy storage battery meet a power supply condition for supplying power to the target power supply network, re-switch the bidirectional energy storage module to a discharge running state according to the discharge instruction and trigger and execute an operation corresponding to the power supply state of the power supply line controlled by the target power supply network.
The bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to a target power supply network, and the bidirectional energy storage module comprises:
the preset module operation identifier aiming at the bidirectional energy storage module indicates that the bidirectional energy storage module is in a normal operation state currently, the reserve power corresponding to the energy storage battery is higher than the target power supply required by the target power supply network in the current power supply period, and the quality detection standard rate corresponding to the energy storage battery is higher than Yu Jizhun standard rate.
In this optional embodiment, optionally, the generating module 302 is further configured to generate the positive feedback information to be corrected and the correction processing scheme for the bidirectional energy storage module and the energy storage battery, where the positive feedback information to be corrected and the correction processing scheme are used for being fed back to a responsible person who processes the target power supply network when the second judging module 306 judges that the bidirectional energy storage module and the energy storage battery do not meet the power supply condition for supplying power to the target power supply network.
As shown in fig. 4, the apparatus further comprises a correction module 308, wherein:
and the correction module 308 is configured to execute correction processing operation on the bidirectional energy storage module and the energy storage battery according to the feedback information and the correction processing scheme when feedback information for the correction processing scheme fed back by the responsible person is detected, and trigger execution of operation corresponding to the power supply state of the power supply line controlled by the detection target power supply network by switching the bidirectional energy storage module to the discharge running state again according to the discharge instruction.
As can be seen, implementing the high voltage dc powered power management and control device described in fig. 4, a running detection program for the bidirectional energy storage module is set: whether the bidirectional energy storage module is in a discharging running state or not can be intelligently detected, if not, the bidirectional energy storage module and the energy storage battery are checked according to the power supply condition, so that the fault discovery efficiency of the bidirectional energy storage module and the energy storage battery is improved; further, aiming at the situation that the bidirectional energy storage module and the energy storage battery do not meet the power supply condition, corresponding positive feedback information to be corrected and a correction processing scheme can be automatically generated and fed back to a responsible person, so that the generation efficiency of the positive feedback information to be corrected and the correction processing scheme is improved, and the processing efficiency of the situation that the bidirectional energy storage module and the energy storage battery do not meet the power supply condition is improved.
Example IV
Referring to fig. 5, fig. 5 is a schematic structural diagram of another dc-dc power supply power management and control device according to an embodiment of the invention. As shown in fig. 5, the apparatus for controlling electric energy supplied by high voltage direct current may include:
a memory 401 storing executable program codes;
a processor 402 coupled with the memory 401;
the processor 402 invokes executable program codes stored in the memory 401 to perform the steps in the hvdc power supply power management method described in the first or second embodiment of the present invention.
Example five
The embodiment of the invention discloses a computer storage medium which stores computer instructions for executing the steps in the high-voltage direct-current power supply power management and control method described in the first embodiment or the second embodiment of the invention when the computer instructions are called.
Example six
An embodiment of the present invention discloses a computer program product, which includes a non-transitory computer storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps in the hvdc-powered power management method described in the first embodiment or the second embodiment.
Example seven
The embodiment of the invention discloses an electric energy management and control system for high-voltage direct current power supply, which comprises a bidirectional energy storage module, an energy storage battery and a standby battery; the electric energy management and control system is used for executing the steps in the electric energy management and control method for high-voltage direct current power supply described in the first embodiment or the second embodiment of the invention.
The apparatus embodiments described above are merely illustrative, wherein the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer storage medium including Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), programmable Read-Only Memory (PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disk Memory, tape Memory, or any other medium readable by a computer that can be used to carry or store data.
Finally, it should be noted that: the embodiment of the invention discloses a method and a device for controlling electric energy supplied by high-voltage direct current, which are disclosed by the embodiment of the invention only as a preferred embodiment of the invention, and are only used for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The utility model provides a control method of electric energy of high voltage direct current power supply which characterized in that, the method is applied to in the target power supply network, target power supply network includes two-way energy storage module, energy storage battery and reserve battery, and the method includes:
determining a power supply response state corresponding to the target power supply network, wherein the power supply response state comprises a first response state corresponding to the trough of the electric charge or a second response state corresponding to the peak of the electric charge of the target power supply network;
When the target power supply network is determined to be in the first response state, generating a charging instruction for the bidirectional energy storage module and a primary standby instruction for the standby battery, switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the standby battery to be in a standby power dormant state according to the primary standby instruction, wherein the standby battery in the standby power dormant state does not perform battery charging or battery discharging operation;
when the target power supply network is determined to be in the second response state, a discharging instruction aiming at the bidirectional energy storage module is generated, the bidirectional energy storage module is switched to a discharging running state according to the discharging instruction, and the stored electric quantity of the energy storage battery is called through the bidirectional energy storage module to supply power to the target power supply network.
2. The method for controlling electric energy supplied by high voltage direct current as recited in claim 1 wherein said target power supply network further comprises a backup battery; when the target power supply network is determined to be in the first response state, before the primary standby power instruction for the standby battery is generated, the method further comprises:
Judging whether the standby electric quantity of the standby battery is higher than the reference electric quantity corresponding to the preset equipment electric quantity requirement, and triggering and executing the operation of generating the primary standby electric instruction for the standby battery when the standby electric quantity is judged to be higher than the reference electric quantity;
when the standby electric quantity is judged to be lower than or equal to the reference electric quantity, a secondary standby electric instruction aiming at the standby electric battery is generated, the standby electric battery is switched to a standby electric charging state according to the secondary standby electric instruction, when the standby electric battery is in the standby electric charging state, battery charging operation is carried out on the standby electric battery until the standby electric quantity is determined to be higher than the reference electric quantity, and the standby electric battery is switched to the standby electric dormant state.
3. A method of controlling power supplied by a hvdc power source in accordance with claim 1 or 2, wherein when it is determined that said target power supply network is in said second response state, said method further comprises:
judging whether the bidirectional energy storage module is in the discharging operation state, and detecting a power supply state of a power supply line controlled by the target power supply network when the bidirectional energy storage module is in the discharging operation state, wherein the power supply state comprises a fault state corresponding to a power supply fault or a reference operation state opposite to the fault state;
When the power supply state of the power supply line is determined to be the fault state, generating an emergency control instruction for the standby battery, switching the standby battery to a discharge response state according to the emergency control instruction, wherein the standby battery in the discharge response state is used for providing standby running electric quantity for the power supply line;
wherein the standby battery in a non-discharge responsive state does not perform the battery charging or the battery discharging operation.
4. A method of controlling power supplied by a high voltage dc power source as claimed in claim 3, wherein when it is determined that the bidirectional energy storage module is not in the discharge operation state, the method further comprises:
judging whether the bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, and when judging that the bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, switching the bidirectional energy storage module to the discharging running state again according to the discharging instruction and triggering and executing the operation corresponding to the detection of the power supply state of the power supply line controlled by the target power supply network;
The bidirectional energy storage module and the energy storage battery meet the power supply condition for supplying power to the target power supply network, and the bidirectional energy storage module comprises:
the preset module operation identifier aiming at the bidirectional energy storage module indicates that the bidirectional energy storage module is in a normal operation state at present, the reserve power corresponding to the energy storage battery is higher than the target power supply required by the target power supply network in the current power supply period, and the quality inspection standard rate corresponding to the energy storage battery is high in Yu Jizhun standard rate.
5. The method of claim 4, wherein when it is determined that the bidirectional energy storage module and the energy storage battery do not meet a power supply condition for supplying power to the target power supply network, the method further comprises:
generating to-be-corrected positive feedback information and a correction processing scheme aiming at the bidirectional energy storage module and the energy storage battery, wherein the to-be-corrected positive feedback information and the correction processing scheme are used for being fed back to a responsible person who processes the target power supply network;
when feedback information which is fed back by the responsible person and aims at the correction processing scheme is detected, correction processing operation is carried out on the bidirectional energy storage module and the energy storage battery according to the feedback information and the correction processing scheme, and the bidirectional energy storage module is triggered to be switched to the discharging running state again according to the discharging instruction, and the operation corresponding to the detection of the power supply state of the power supply line controlled by the target power supply network is triggered to be carried out.
6. The method for controlling electric energy supplied by high voltage direct current according to claim 1, 2, 4 or 5, wherein said bidirectional energy storage module controls a plurality of said energy storage cells; before the generating the charging instruction for the bidirectional energy storage module, the method further includes:
determining a module switching parameter of the bidirectional energy storage module in the first response state, wherein the module switching parameter is used for switching a module running state of the bidirectional energy storage module, and the module running state comprises a charging energy storage state corresponding to a power supply current allowed to be accessed into the target power supply network or a discharging state for supplying power to the target power supply network based on at least one energy storage battery;
detecting the energy storage requirement of each energy storage battery in the first response state, wherein the energy storage requirement corresponding to each energy storage battery comprises the current remaining battery reserve of the energy storage battery, the electric quantity to be stored and the adaptive access electric parameters, and the adaptive access electric parameters corresponding to each energy storage battery are access current or access voltage for the energy storage battery to execute charging operation adaptation;
the generating a charging instruction for the bidirectional energy storage module includes:
And generating a charging instruction aiming at the bidirectional energy storage module according to the energy storage requirement and the module switching parameter corresponding to each energy storage battery, wherein the charging instruction comprises a sub-charging instruction corresponding to each energy storage battery.
7. The method for controlling electric energy supplied by high voltage direct current as claimed in claim 6, wherein the bidirectional energy storage module at least comprises a voltage-reducing sub-module, a voltage-increasing sub-module and a control chip;
the step-down submodule at least comprises a first mos tube, a target inductance coil, a target capacitor and a first diode, and is used for performing step-down processing operation on input voltage;
the boosting submodule at least comprises a second mos tube, the target inductance coil, an induction resistor, the target capacitor and a second diode, and is used for performing boosting processing operation on input voltage;
the control chip is used for detecting the control requirement of the electric parameter, and executing parameter adjustment on the electric parameter by combining the boosting submodule and/or the step-down submodule according to the control requirement so as to adjust the electric parameter to be matched with the control requirement;
Wherein the electrical parameter includes at least one of an input voltage, an output voltage, and an output current, and the control demand includes at least one of a conversion demand for the input voltage, a conversion demand for the output voltage, and a conversion demand for the output current.
8. The utility model provides a high voltage direct current power supply's electric energy management and control device, its characterized in that, the device is applied to in the target power supply network, target power supply network includes two-way energy storage module, energy storage battery and reserve electric battery, the device includes:
the determining module is used for determining a power supply response state corresponding to the target power supply network, wherein the power supply response state comprises a first response state corresponding to the trough of the electric charge or a second response state corresponding to the peak of the electric charge of the target power supply network;
the generation module is used for generating a charging instruction aiming at the bidirectional energy storage module and a primary standby instruction aiming at the standby battery when the target power supply network is determined to be in the first response state;
the first response control module is used for switching the bidirectional energy storage module to a charging running state according to the charging instruction, executing charging operation on the energy storage battery through the bidirectional energy storage module, and controlling the standby battery to be in a standby power dormant state according to the primary standby power instruction, wherein the standby battery in the standby power dormant state does not perform battery charging or battery discharging operation;
The generating module is further configured to generate a discharge instruction for the bidirectional energy storage module when it is determined that the target power supply network is in the second response state;
and the second response control module is used for switching the bidirectional energy storage module to a discharging running state according to the discharging instruction and calling the stored electric quantity of the energy storage battery through the bidirectional energy storage module to supply power to the target power supply network.
9. An apparatus for controlling electric energy supplied by high voltage direct current, the apparatus comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform the hvdc-powered power management method according to any of claims 1-7.
10. The electric energy management and control system for high-voltage direct current power supply is characterized by comprising a bidirectional energy storage module, an energy storage battery and a standby battery; the power management and control system is used for executing the power management and control method for high-voltage direct current power supply according to any one of claims 1 to 7.
CN202310412635.1A 2023-04-10 2023-04-10 Electric energy management and control method and device for high-voltage direct current power supply and electric energy management and control system Pending CN117013575A (en)

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CN202310412635.1A CN117013575A (en) 2023-04-10 2023-04-10 Electric energy management and control method and device for high-voltage direct current power supply and electric energy management and control system

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CN202310412635.1A CN117013575A (en) 2023-04-10 2023-04-10 Electric energy management and control method and device for high-voltage direct current power supply and electric energy management and control system

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