CN111342502A - Forsmark effect suppression method and device based on bidirectional converter - Google Patents
Forsmark effect suppression method and device based on bidirectional converter Download PDFInfo
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- CN111342502A CN111342502A CN202010242764.7A CN202010242764A CN111342502A CN 111342502 A CN111342502 A CN 111342502A CN 202010242764 A CN202010242764 A CN 202010242764A CN 111342502 A CN111342502 A CN 111342502A
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- bidirectional converter
- direct current
- voltage
- electrical equipment
- charger
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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
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
- H02M1/0022—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters the disturbance parameters being input voltage fluctuations
Abstract
The invention relates to the technical field of electric power, and provides a Forsmark effect suppression method and device based on a bidirectional converter. The bidirectional converter is connected in parallel with a rectifying module in the electrical equipment, and the rectifying module is used for converting alternating current input into the electrical equipment into direct current and outputting the direct current to a direct current bus of the electrical equipment, wherein the method comprises the following steps: monitoring the direct current bus voltage of the electrical equipment; if the voltage of the direct current bus is monitored to be larger than a preset voltage threshold value, the bidirectional converter is controlled to enter a first working mode, and in the first working mode, the bidirectional converter is used for feeding back energy of the direct current bus of the electrical equipment to be connected into a power grid, so that the Forsmark effect is effectively inhibited, and the normal operation of the system is guaranteed.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a Forsmark effect suppression method and device based on a bidirectional converter.
Background
The Forsmark effect refers to the phenomenon that the output alternating current voltage is interrupted or suddenly changed due to the fact that the direct current bus voltage fluctuates along with the sudden change of the surge voltage of the alternating current input power grid, and the fluctuation range of the direct current bus voltage exceeds the performance bearing range of devices of an inverter.
The Forsmark effect phenomenon generally exists in a circuit of electrical equipment, due to sudden change of an alternating current input power grid (connected into the power grid), voltage is transmitted to a direct current bus through a rectification circuit, so that the voltage of the direct current bus is suddenly increased and exceeds a direct current input overvoltage point of an inverter, output power failure is caused, and when the voltage of the direct current bus is suddenly increased, even an IGBT (insulated gate bipolar transistor) tube of the inverter can be damaged, and the normal operation of a system is influenced.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for suppressing the forsmarkk effect based on a bidirectional converter, so as to solve the problem of the forsmarkk effect generated in the circuit of the electrical device due to the sudden change of the ac input grid.
The invention provides a Forsmark effect suppression method based on a bidirectional converter, wherein the bidirectional converter is connected with a rectifier module in an electrical device in parallel, the rectifier module is used for converting alternating current input into the electrical device into direct current and outputting the direct current to a direct current bus of the electrical device, and the suppression method comprises the following steps:
monitoring the direct current bus voltage of the electrical equipment;
if the voltage of the direct current bus is monitored to be larger than a preset voltage threshold value, controlling the bidirectional converter to enter a first working mode;
and in the first working mode, the bidirectional converter is used for feeding back energy of a direct current bus of the rectifying module to an access power grid.
Based on the first aspect of the present invention, in a first possible implementation manner of the first aspect, after the controlling the bidirectional converter to enter the first operating mode, the method further includes:
and if the direct current bus voltage is not greater than the voltage threshold value, controlling the bidirectional converter to exit the first working mode.
Based on the first aspect of the present invention or the first possible implementation manner of the first aspect, in a second possible implementation manner, the electrical device further includes an energy storage unit connected to the dc bus, the rectification module includes a charger having a charging function, and the suppression method further includes:
acquiring the working state of the charger;
correspondingly, after the monitoring the dc bus voltage of the electrical device, the method further comprises:
and if the voltage of the direct current bus is not greater than the voltage threshold value, controlling the working mode of the bidirectional converter based on the working state of the charger.
Based on the second possible implementation manner of the first aspect of the present invention, in a third possible implementation manner, the controlling the operation mode of the bidirectional converter based on the operation state of the charger includes:
if the working state of the charger is a non-fault state, controlling the bidirectional converter to enter a second working mode;
wherein in the second mode of operation, the bidirectional converter is in standby.
Based on the second possible implementation manner of the first aspect of the present invention, in a fourth possible implementation manner, the controlling the operation mode of the bidirectional converter based on the operation state of the charger further includes:
if the working state of the charger is a fault state, controlling the bidirectional converter to enter a third working mode;
in the third operating mode, the bidirectional converter is used for converting the grid voltage to be output to a load of the electrical device and for charging an energy storage unit of the electrical device.
A second aspect of the present invention provides a forsmarkk effect suppression apparatus based on a bidirectional converter, the bidirectional converter being connected in parallel to a rectifier module in an electrical device, the rectifier module being configured to convert an ac power input to the electrical device into a dc power and output the dc power to a dc bus of the electrical device, the suppression apparatus including:
the monitoring unit is used for monitoring the direct-current bus voltage of the electrical equipment;
the control unit is used for controlling the bidirectional converter to enter a first working mode when the monitored direct-current bus voltage is greater than a preset voltage threshold;
in the first operating mode, the bidirectional converter is used for feeding back energy of a direct current bus of the electrical equipment to an access grid.
In a second possible implementation manner of the second aspect, the control unit is further configured to control the bidirectional converter to exit the first operating mode when the monitored dc bus voltage is not greater than the voltage threshold.
In a second possible implementation manner according to the second aspect or the first possible implementation manner of the second aspect of the present invention, the electrical device further includes an energy storage unit connected to the dc bus, the rectification module includes a charger having a charging function, and the suppression apparatus further includes:
the state acquisition unit is used for acquiring the working state of the charger;
correspondingly, the control unit is further configured to control the operating mode of the bidirectional converter based on the operating state of the charger when the monitored voltage of the direct current bus is not greater than the voltage threshold.
Based on the second possible implementation manner of the second aspect of the present invention, in a third possible implementation manner, the control unit is further configured to control the bidirectional converter to enter a second operation mode if the operating state of the charger is a non-fault state; wherein in the second mode of operation, the bidirectional converter is in standby.
Based on the second possible implementation manner of the second aspect of the present invention, in a fourth possible implementation manner, the control unit is further configured to control the bidirectional converter to enter a third operating mode if the operating state of the charger is a fault state; in the third operating mode, the bidirectional converter is used for converting the voltage connected to the power grid and outputting the voltage to the load of the electrical equipment, and is used for charging the energy storage unit of the electrical equipment.
A third aspect of the present invention provides a terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the method for suppressing the Forsmark effect based on a bidirectional converter as described in any one of the first aspect of the present invention.
A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the steps of the method for suppressing the forsmarkk effect based on a bidirectional converter according to any of the first aspects of the present invention.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the direct current bus voltage of the electrical equipment is monitored, and when the direct current bus voltage is monitored to be greater than a preset voltage threshold value, the bidirectional converter is controlled to enter a first working mode, wherein in the first working mode, the bidirectional converter is used for feeding back the energy of the direct current bus of the electrical equipment to be accessed into a power grid. The invention presets a voltage threshold value for realizing the voltage sudden increase and over-limit of the direct current bus, when the voltage of the direct current bus is monitored to be larger than the threshold value, the voltage of an alternating current input power grid (connected to the power grid) is suddenly changed, the voltage of the direct current bus is suddenly increased and over-limit, and at the moment, the energy of the direct current bus is fed back to the connected power grid through the bidirectional converter, so that the Forsmark effect is inhibited, and the normal operation of the system is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a flowchart illustrating an implementation of a Forsmark effect suppression method based on a bidirectional converter according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a working process of a bidirectional converter entering a first working mode according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal structure of a bidirectional converter provided in an embodiment of the present invention;
FIG. 4 is a flowchart illustrating an implementation of one possible implementation manner of a Forsmark effect suppression method based on a bidirectional converter according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating the operation of the bidirectional converter in the second operation mode according to the embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a working process of the bidirectional converter entering a third working mode according to the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a Forsmark effect suppression device based on a bidirectional converter according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
In the embodiment of the present application, an electrical device refers to a device configured with a dc bus and a rectifying module, where the rectifying module is used to convert ac power (which may be input from an access grid) input to the electrical device into dc power and output the dc power to the dc bus of the electrical device.
In the embodiment of the application, a bidirectional converter can be arranged in parallel for the rectifier module of the electrical equipment, and energy conversion between a direct current bus of the electrical equipment and an access power grid is realized through control of the bidirectional converter, so that a Forsmark effect possibly generated in the electrical equipment is suppressed.
In other application scenarios, for example, when the device is used in a nuclear power plant, the electrical equipment is usually equipped with an energy storage unit (e.g., a battery pack), a rectifier module of the electrical equipment is usually a charger with a rectifier function and a charging function, and a bidirectional converter may also be configured for the charger to perform maintenance and quick repair of the battery pack, for example, in a two-three-year overhaul or inspection, the charger is powered off, the bidirectional converter is enabled to perform a discharge test on the battery pack, and the battery pack is precharged to be full after the test is completed.
Referring to fig. 1, it shows a flowchart of an implementation of the method for suppressing the forsmarkk effect based on a bidirectional converter according to an embodiment of the present invention, which is detailed as follows:
in the electrical equipment, alternating current connected to a power grid is rectified by a rectifying module and then input to a direct current bus, and whether a Forsmark effect phenomenon is generated or not can be judged according to the voltage condition of the direct current bus; in the embodiment of the invention, in order to timely and accurately find whether the Forsmark effect phenomenon occurs or not so as to take a countermeasure, the voltage condition of the direct current bus of the electrical equipment is monitored in real time.
in the first operating mode, the bidirectional converter is used for feeding back energy of a direct current bus of the electrical equipment to an access grid.
In the embodiment of the invention, according to the change rule of the voltage on the direct current bus when the Forsmark effect phenomenon is generated, a voltage threshold value for reflecting the voltage surge overrun of the direct current bus can be preset, when the system monitors that the voltage of the direct current bus of the electrical equipment is greater than the preset voltage threshold value, the voltage surge overrun of the access power grid is indicated, namely, the Forsmark effect is generated in the circuit of the electrical equipment, and at the moment, the control system controls the bidirectional converter to enter the first working mode.
The operation flow of the bidirectional converter in the first operation mode is shown in fig. 2: in the first operating mode, the rectifier module 21 maintains a normal operating state, that is, the ac energy input into the power grid is rectified and converted into dc energy, the dc energy is input into the dc bus to supply power to the load 23, and the bidirectional converter 22 inverts the dc energy of the dc bus into ac energy and feeds the ac energy back to the power grid, so as to reduce the voltage of the dc bus.
In the embodiment of the present invention, the load 23 may be a dc load or an ac load, and if the load is a dc load, the load may be directly connected to a dc bus of the electrical device; if the load is an alternating current load, the load can be connected to a direct current bus of the electrical equipment through the inverter module.
In one embodiment, as shown in fig. 3, it shows an internal structure and operation principle of a bidirectional converter: in this embodiment, the bidirectional converter may include a dc terminal 31, a three-phase half-bridge topology 32, a three-phase isolation step-up transformer 33, a three-phase LC filter 34, a three-phase grid 35, a first sampling module 36, a control system 37, and a second sampling module 38; the first sampling module 36 collects voltage and current of the direct current terminal 31 and transmits the voltage and current to the control system 37, and the second sampling module 38 collects voltage and current of the three-phase power grid 35 and the voltage and current filtered by the three-phase LC filter 34 and transmits the voltage and current to the control system 37, so that grid-connected tracking and power control during grid connection are realized; one end of the bidirectional converter is connected with the direct current end 31, the other end of the bidirectional converter is connected with the three-phase power grid end 35, and the control system 37 can invert the direct current energy of the direct current end 31 into alternating current energy through the three-phase half-bridge topology 32, the three-phase isolation step-up transformer 33 and the three-phase LC filter 34 by controlling the topological structure of the three-phase half-bridge topology 32 and feed the alternating current energy back to the three-phase power grid 35; or the alternating current energy of the three-phase power grid 35 is converted into direct current energy through the three-phase LC filter 34, the three-isolation step-up transformer 33 and the three-phase half-bridge topology 32, and the direct current energy is input to the direct current bus of the direct current terminal 31.
Optionally, after the step 102, the method may further include:
and if the direct current bus voltage is not greater than the voltage threshold value, controlling the bidirectional converter to exit the first working mode.
Because the bidirectional converter can continuously feed back the energy of the direct-current bus of the electrical equipment to the power grid in the first working mode, when the Forsmark effect is inhibited, if the first working mode is continuously maintained, the voltage of the direct-current bus is lower than a normal value, the normal work of the system is influenced, and unnecessary energy loss is caused. Therefore, in the embodiment of the present invention, after controlling the bidirectional converter to operate in the first mode, if the monitoring module monitors that the dc bus voltage is not greater than the voltage threshold, the bidirectional converter is controlled to exit from the first operating mode, and after exiting from the first operating mode, the bidirectional converter may be in a standby state.
In an embodiment, the electrical device may further include an energy storage unit connected to the dc bus, the rectifier module may include a charger having a charging function, and referring to fig. 4, the method for suppressing the forsmarkk effect based on the bidirectional converter may further include:
in an embodiment of the present invention, the electrical device may include an energy storage unit, and accordingly, the rectification module may be a charger. The working state of the charger may include a fault state and a non-fault state, the fault state refers to a state in which the charger fails and stops working normally, and the non-fault state refers to a state in which the charger works normally.
Correspondingly, after the step 101, the method may further include:
and 103, if the voltage of the direct current bus is not greater than the voltage threshold value, controlling the working mode of the bidirectional converter based on the working state of the charger.
If the charger breaks down in the using process, the whole electrical equipment can be shut down, different working modes can be set according to the working state of the charger, and therefore when the charger breaks down, the bidirectional converter is used as standby equipment to execute the original functions of the charger, and normal operation of the electrical equipment is guaranteed.
Optionally, in step 103, the controlling the operation mode of the bidirectional converter based on the operation state of the charger may include:
if the working state of the charger is a non-fault state, controlling the bidirectional converter to enter a second working mode;
wherein in the second mode of operation, the bidirectional converter is in standby.
When the voltage of the direct current bus monitored by the monitoring module is not greater than a preset voltage threshold and the working state of the charger is a non-fault state, it is indicated that the Forsmark effect does not occur and the charger does not have a fault, and at the moment, the control system controls the bidirectional converter to work in a second working mode, namely, in a standby state.
The operation flow of the bidirectional converter in the second operation mode can refer to fig. 5: in the second operating mode, the charger 51 maintains a normal operating state, and rectifies the ac power input from the power grid into dc power to be input to the dc bus, where the dc bus supplies power to the load 23 and charges the energy storage unit 54 of the electrical device, and the bidirectional converter 22 is in a standby state to save energy consumption.
Optionally, in step 103, the controlling the operation mode of the bidirectional converter based on the operation state of the charger may include:
if the working state of the charger is a fault state, controlling the bidirectional converter to enter a third working mode;
in the third operating mode, the bidirectional converter is used for converting the grid voltage to be output to a load of the electrical device and for charging an energy storage unit of the electrical device.
In the embodiment of the application, when the working state of the charger is a fault state, the bidirectional converter can be controlled to enter the third working mode so as to execute the function of the charger and ensure the normal operation of the electrical equipment.
The operation flow of the bidirectional converter in the third operation mode can refer to fig. 6: since the charger 51 is connected in parallel with the bidirectional converter 22, and the bidirectional converter has a function of rectifying current, the bidirectional converter can realize its function in the electrical equipment circuit instead of the charger; in the third operating mode, the bidirectional converter 22 replaces the charger 51, and converts ac energy accessed to the power grid into dc energy to be output to the dc bus, and the dc energy of the dc bus supplies power to the load 23, and charges the energy storage unit 54, so that normal operation of the electrical equipment system is ensured, the use efficiency of the bidirectional converter is improved, and economic benefits are improved.
According to the invention, by monitoring the voltage of the direct current bus of the electrical equipment, when the monitored voltage of the direct current bus is greater than the preset voltage threshold, the bidirectional converter can be controlled to feed back the energy of the direct current bus of the electrical equipment to the power grid, the Forsmark effect phenomenon is effectively inhibited, and when the charger of the electrical equipment breaks down, the bidirectional converter can be controlled to replace the charger to work, so that the normal operation of the system is ensured, the use efficiency of the bidirectional converter is improved, and the economic benefit is improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The following are embodiments of the apparatus of the invention, reference being made to the corresponding method embodiments described above for details which are not described in detail therein.
Fig. 7 shows a schematic structural diagram of a forsmartask effect suppression device based on a bidirectional converter according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:
as shown in fig. 7, the Forsmark effect suppression device 7 based on a bidirectional converter includes: a monitoring unit 71 and a control unit 72.
A monitoring unit 71 for monitoring a dc bus voltage of the electrical device;
in the embodiment of the present application, the bidirectional converter is connected in parallel with a rectifying module in the electrical device, and the rectifying module is configured to convert ac power input to the electrical device into dc power and output the dc power to a dc bus of the electrical device.
The control unit 72 is configured to control the bidirectional converter to enter a first working mode when the monitored dc bus voltage is greater than a preset voltage threshold;
in the first operating mode, the bidirectional converter is used for feeding back energy of a direct current bus of the electrical equipment to an access grid.
Optionally, the control unit 72 is further configured to control the bidirectional converter to exit the first operating mode when the monitored dc bus voltage is not greater than the voltage threshold.
Optionally, the electrical device further includes an energy storage unit connected to the dc bus, the rectifier module includes a charger with a charging function, and correspondingly, the forsmarkk effect suppression device 7 based on a bidirectional converter further includes:
the state acquisition unit is used for acquiring the working state of the charger;
correspondingly, the control unit 72 is further configured to control the operating mode of the bidirectional converter based on the operating state of the charger when the monitored dc bus voltage is not greater than the voltage threshold.
Optionally, the control unit 72 is further configured to, if the working state of the charger is a non-fault state, control the bidirectional converter to enter a second working mode; wherein in the second mode of operation, the bidirectional converter is in standby.
Optionally, the control unit 72 is further configured to, if the working state of the charger is a fault state, control the bidirectional converter to enter a third working mode; in the third operating mode, the bidirectional converter is used for converting the voltage connected to the power grid and outputting the voltage to the load of the electrical equipment, and is used for charging the energy storage unit of the electrical equipment.
According to the invention, by monitoring the voltage of the direct current bus of the electrical equipment, when the monitored voltage of the direct current bus is greater than the preset voltage threshold value, the bidirectional converter is controlled to feed back the energy of the direct current bus of the electrical equipment to the power grid, the Forsmark effect phenomenon is effectively inhibited without being limited by an output load, and when a charger of the electrical equipment breaks down, the bidirectional converter can be controlled to replace the charger to work, so that the normal operation of a system is ensured, the use efficiency of the bidirectional converter is improved, and the economic benefit is improved.
Fig. 8 is a schematic diagram of a terminal according to an embodiment of the present invention. As shown in fig. 8, the terminal 8 of this embodiment includes: a processor 81, a memory 82 and a computer program 83 stored in said memory 82 and executable on said processor 81. The processor 81, when executing the computer program 83, implements the steps in each of the above-described embodiments of the bidirectional transformer based forsmarkk effect suppression method, such as steps 101 to 102 shown in fig. 1 and steps 100 to 103 shown in fig. 2. Alternatively, the processor 81 implements the functions of the units in the device embodiments described above, for example, the functions of the units 81 to 82 shown in fig. 8, when the computer program 83 is executed.
Illustratively, the computer program 703 may be divided into one or more units, which are stored in the memory 702 and executed by the processor 701 to accomplish the present invention. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 703 in the terminal 7. For example, the computer program 703 may be divided into a monitoring unit, a control unit. The specific functions of each unit are as follows:
the monitoring unit is used for monitoring the direct-current bus voltage of the electrical equipment;
the control unit is used for controlling the bidirectional converter to enter a first working mode when the monitored direct-current bus voltage is greater than a preset voltage threshold;
in the first operating mode, the bidirectional converter is used for feeding back energy of a direct current bus of the electrical equipment to an access grid.
The terminal 7 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal 7 may include, but is not limited to, a processor 701, a memory 702. It will be appreciated by those skilled in the art that fig. 7 is only an example of a terminal 7 and does not constitute a limitation of the terminal 7, and that it may comprise more or less components than those shown, or some components may be combined, or different components, for example the terminal may further comprise input output devices, network access devices, buses, etc.
The Processor 701 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 702 may be an internal storage unit of the terminal 7, such as a hard disk or a memory of the terminal 7. The memory 702 may also be an external storage device of the terminal 7, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal 7. Further, the memory 702 may also include both an internal storage unit and an external storage device of the terminal 7. The memory 702 is used for storing the computer program and other programs and data required by the terminal. The memory 702 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. The Forsmark effect suppression method based on the bidirectional converter is characterized in that the bidirectional converter is connected with a rectifying module in electrical equipment in parallel, and the rectifying module is used for converting alternating current input into the electrical equipment into direct current and outputting the direct current to a direct current bus of the electrical equipment;
the inhibition method comprises the following steps:
monitoring a direct current bus voltage of the electrical device;
if the voltage of the direct current bus is monitored to be larger than a preset voltage threshold value, controlling the bidirectional converter to enter a first working mode;
in the first operating mode, the bidirectional converter is used for feeding back energy of a direct current bus of the electrical equipment to an access grid.
2. The Forsmark effect suppression method based on bidirectional converter according to claim 1, further comprising, after controlling the bidirectional converter to enter the first operating mode:
and if the direct current bus voltage is not greater than the voltage threshold value, controlling the bidirectional converter to exit the first working mode.
3. The Forsmark effect suppression method based on the bidirectional converter according to claim 1 or 2, characterized in that the electrical equipment further comprises an energy storage unit connected to the direct current bus, the rectification module comprises a charger with a charging function, and the suppression method further comprises:
acquiring the working state of the charger;
correspondingly, after the monitoring the dc bus voltage of the electrical device, the method further comprises:
and if the voltage of the direct current bus is not greater than the voltage threshold value, controlling the working mode of the bidirectional converter based on the working state of the charger.
4. The Forsmark effect suppression method based on the bidirectional converter according to claim 3, wherein the controlling the operation mode of the bidirectional converter based on the operation state of the charger includes:
if the working state of the charger is a non-fault state, controlling the bidirectional converter to enter a second working mode;
wherein in the second mode of operation, the bidirectional converter is in standby.
5. The Forsmark effect suppression method based on the bidirectional converter according to claim 3, wherein the controlling the operation mode of the bidirectional converter based on the operation state of the charger includes:
if the working state of the charger is a fault state, controlling the bidirectional converter to enter a third working mode;
in the third operating mode, the bidirectional converter is used for converting the voltage connected to the power grid and outputting the voltage to the load of the electrical equipment, and is used for charging the energy storage unit of the electrical equipment.
6. A forsmartk effect suppression device based on a bidirectional converter, wherein the bidirectional converter is connected in parallel with a rectifier module in an electrical apparatus, the rectifier module is used for converting alternating current input into the electrical apparatus into direct current and outputting the direct current to a direct current bus of the electrical apparatus, and the suppression device comprises:
the monitoring unit is used for monitoring the direct-current bus voltage of the electrical equipment;
the control unit is used for controlling the bidirectional converter to enter a first working mode when the monitored direct-current bus voltage is greater than a preset voltage threshold;
in the first operating mode, the bidirectional converter is used for feeding back energy of a direct current bus of the electrical equipment to an access grid.
7. The Forsmark effect suppression device based on bidirectional converter as claimed in claim 6, wherein said control unit is further configured to control said bidirectional converter to exit said first operating mode when said monitored DC bus voltage is not greater than said voltage threshold.
8. The Forsmark effect suppression device based on bidirectional converter according to claim 6 or 7, characterized in that the electrical equipment further comprises an energy storage unit connected to the DC bus, the rectification module comprises a charger with charging function, and the control device further comprises:
the state acquisition unit is used for acquiring the working state of the charger;
correspondingly, the control unit is further configured to control the operating mode of the bidirectional converter based on the operating state of the charger when the monitored voltage of the direct current bus is not greater than the voltage threshold.
9. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the bidirectional converter based Forsmark effect suppression method according to any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the bidirectional converter based forskark effect suppression method according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010242764.7A CN111342502B (en) | 2020-03-31 | 2020-03-31 | Forsmark effect suppression method and device based on bidirectional converter |
| PCT/CN2020/128613 WO2021196627A1 (en) | 2020-03-31 | 2020-11-13 | Bidirectional converter-based forsmark effect suppression method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010242764.7A CN111342502B (en) | 2020-03-31 | 2020-03-31 | Forsmark effect suppression method and device based on bidirectional converter |
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| CN111342502A true CN111342502A (en) | 2020-06-26 |
| CN111342502B CN111342502B (en) | 2022-06-14 |
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| WO (1) | WO2021196627A1 (en) |
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| WO2021196627A1 (en) * | 2020-03-31 | 2021-10-07 | 科华恒盛股份有限公司 | Bidirectional converter-based forsmark effect suppression method and apparatus |
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| CN115932463A (en) * | 2022-10-31 | 2023-04-07 | 科华数据股份有限公司 | Forsmark effect monitoring method for nuclear-grade electrical equipment |
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| CN111342502B (en) | 2022-06-14 |
| WO2021196627A1 (en) | 2021-10-07 |
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