CN113824342B - Power control method and related device - Google Patents
Power control method and related device Download PDFInfo
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- CN113824342B CN113824342B CN202111397945.8A CN202111397945A CN113824342B CN 113824342 B CN113824342 B CN 113824342B CN 202111397945 A CN202111397945 A CN 202111397945A CN 113824342 B CN113824342 B CN 113824342B
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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
- 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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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Abstract
The application provides a power control method and a related device, wherein the method is applied to a main controller of a rectification system and comprises the following steps: first power of each branch output end is obtained, and then the following processing is executed aiming at each branch output end: the method comprises the steps of obtaining second power of a first converter connected with a first branch output end, calculating first quantity of the second converter connected with the first branch output end according to the first power of the first branch output end and the second power, determining whether the first quantity is consistent with actual quantity, determining a third converter according to the first quantity and the actual quantity when the first quantity is inconsistent with the actual quantity, adjusting the third converter, and not adjusting when the first quantity is consistent with the actual quantity. It can be seen that the present application ensures that the power of the power electronic converter is at a preferred node by regulating the power of the power electronic converter.
Description
Technical Field
The present application relates to the field of power balance control technologies, and in particular, to a power control method and a related apparatus.
Background
At present, multi-winding transformers are widely applied to power substations, communication power supply systems, energy storage systems and data center power supply systems. The multi-winding transformer realizes that one input voltage is converted into a multi-winding output branch, and each output winding is connected with the power electronic converter to realize the voltage conversion.
In the working process of the conventional multi-winding rectifying system, sometimes the power of a power electronic converter in the multi-winding rectifying system is low, so that a rectifying unit cannot achieve better working efficiency, and further resource waste is caused.
Disclosure of Invention
In view of the foregoing disadvantages of the prior art, the present application provides a power control method and related apparatus, which are used to ensure that a power electronic converter in a multi-winding rectification system is in a better operating state.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect, an embodiment of the present application provides a power control method, which is applied to a main controller of a rectification system, where the rectification system includes the main controller and a rectification module, the main controller is connected to the rectification module, the rectification module includes a transformer, a plurality of power electronic conversion units, and a plurality of branch output ends, the transformer includes a plurality of output windings, each power electronic conversion unit includes a plurality of power electronic converters, each output winding is connected to input ends of the plurality of power electronic converters of one power electronic conversion unit, the plurality of output windings are in one-to-one correspondence with the plurality of power electronic conversion units, and each branch output end is connected to at least an output end of one power electronic converter in each power electronic conversion unit; the method comprises the following steps:
acquiring first power of an output end of each branch circuit;
performing the following processing for each branch output terminal:
acquiring second power of a first converter connected with a first branch output end, wherein the first branch output end is a currently processed branch output end, the first converter is a power electronic converter connected with the first branch output end, and the second power is power of the first converter at the highest efficiency;
calculating a first number of second converters connected to the first branch output end according to the first power and the second power of the first branch output end, wherein the second converters are power electronic converters in a working state, and the first number is used for indicating the number of the second converters at the second power;
determining the actual number and the first position of the second converter, wherein the actual number is the number of the second converter at the current moment, and the first position is used for indicating the position of the second converter distributed in the power electronic conversion unit;
comparing the first quantity to the actual quantity;
and when the first number is inconsistent with the actual number, determining a third converter according to the first number, the actual number and the first position, and adjusting the third converter, wherein the third converter is a power electronic converter needing to be adjusted, and the working power of each adjusted third converter is the second power.
It can be seen that in the embodiment of the present application, the power of the power electronic converter at the highest efficiency is calculated to determine whether the power electronic converter in the working state at the present time is at the highest efficiency, and then when the power electronic converter is low in efficiency, the power of the power electronic converter is adjusted to ensure that the power electronic converter is at the highest efficiency.
In a second aspect, an embodiment of the present application provides a power control apparatus, applied to a main controller of a rectification system, where the rectification system includes the main controller and a rectification module, the main controller is connected to the rectification module, the rectification module includes a transformer, a plurality of power electronic conversion units and a plurality of branch output terminals, the transformer includes a plurality of output windings, each power electronic conversion unit includes a plurality of power electronic converters, each output winding is connected to an input terminal of one power electronic conversion unit, and the plurality of output windings are in one-to-one correspondence with the plurality of power electronic conversion units, and each branch output terminal is connected to at least an output terminal of one power electronic converter in each power electronic conversion unit; the device comprises:
an obtaining unit, configured to obtain a first power of each branch output end, and perform the following processing for each branch output end: acquiring second power of a first converter connected with a first branch output end, wherein the first branch output end is a currently processed branch output end, the first converter is a power electronic converter connected with the first branch output end, and the second power is power of the first converter at the highest efficiency;
a computing unit, configured to perform the following processing for each branch output: calculating a first number of second converters connected to the first branch output end according to the first power and the second power of the first branch output end, wherein the second converters are power electronic converters in a working state, and the first number is used for indicating the number of the second converters at the second power; and the method is used for determining the actual number and the first position of the second converter, wherein the actual number is the number of the second converter at the current moment, and the first position is used for indicating the position of the second converter distributed in the power electronic conversion unit.
A comparing unit, configured to perform the following processing for each branch output terminal: comparing the first quantity to the actual quantity;
an adjusting unit, configured to perform the following processing for each branch output: and when the first number is inconsistent with the actual number, determining a third converter according to the first number, the actual number and the first position, and adjusting the third converter, wherein the third converter is a power electronic converter needing to be adjusted, and the working power of each adjusted third converter is the second power.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor, and a memory, where the memory is configured to store one or more programs and is configured to be executed by the processor, and the program includes instructions for executing steps in the method according to the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute instructions of the steps in the method according to the first aspect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a rectification system provided in an embodiment of the present application;
fig. 2 is a schematic flowchart of a power control method according to an embodiment of the present application;
FIG. 3 is a graph of efficiency of a power electronic converter provided by an embodiment of the present application;
fig. 4 is a schematic structural diagram of a power control apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the present application, "at least one" means one or more, and a plurality means two or more. In this application and/or, an association relationship of an associated object is described, which means that there may be three relationships, for example, a and/or B, which may mean: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein each of a, b, c may itself be an element or a set comprising one or more elements.
It should be noted that, in the embodiments of the present application, the term "equal to" may be used in conjunction with more than, and is applicable to the technical solution adopted when more than, and may also be used in conjunction with less than, and is applicable to the technical solution adopted when less than, and it should be noted that when equal to or more than, it is not used in conjunction with less than; when the ratio is equal to or less than the combined ratio, the ratio is not greater than the combined ratio. In the embodiments of the present application, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that the intended meaning is consistent when the difference is not emphasized.
First, partial terms referred to in the embodiments of the present application are explained so as to be easily understood by those skilled in the art.
1. The eddy current effect, referred to as faraday's law of electromagnetic induction, is the generation of an induced current in a bulk conductor when the conductor is placed in an alternating magnetic field or moved in a fixed magnetic field, which current is closed in the conductor. The principle of the transformer generating eddy current loss is simple, and the transformer iron core is a good magnetic conductive material and also belongs to an electric conductor; when the alternating magnetic lines of force pass through the electric conductor, induced electromotive force is generated in the electric conductor, and under the action of the induced electromotive force, loop current is generated in the electric conductor to heat the electric conductor; this phenomenon, in which alternating magnetic lines of force pass through a conductor and induce electromotive force and loop current in the conductor, is called eddy current because the loop current generated by it is not output as energy to the outside but is lost in the conductor itself.
At present, multi-winding transformers are widely applied to power substations, communication power supply systems, energy storage systems and data center power supply systems. The multi-winding transformer realizes that one input voltage is converted into a multi-winding output branch, and each output winding is connected with the power electronic converter to realize the voltage conversion. In the engineering application design of the multi-winding transformer, in order to avoid eddy current loss among windings, the consistency of load among the windings must be ensured, and the specification and the number of each output winding and the corresponding power electronic converter are kept consistent. The existing multi-winding rectifying system has the following problems:
1. in the working process, sometimes the power of a power electronic converter in the multi-winding rectification system is low, so that the rectification unit cannot achieve better working efficiency, and further resource waste is caused;
2. although the balance multi-winding rectifier module framework ensures the consistency of load among multiple windings from a physical structure, and avoids the generation of eddy current loss among the windings, the premise is to ensure that the specifications and the number of the rectifier modules in each power electronic conversion group are required to be consistent, the specifications of the rectifier modules are consistent and can be ensured from a design scheme, but in the operation process, the condition that the rectifier modules are damaged is difficult to avoid, at the moment, the inconsistent condition can be generated by the number of the rectifier modules in each power electronic conversion group, at the moment, the load unbalance of multiple windings of the transformer can be caused, and further the eddy current loss is caused.
In view of the above problems, the present application provides an image data processing method and related apparatus, which will be described in detail below.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a rectification system provided in an embodiment of the present application, the rectification system includes the main controller and a rectification module, the main controller is connected to the rectification module, the rectification module includes a transformer T, a plurality of power electronic conversion units and a plurality of branch output terminals (VO 1-VON shown in fig. 1), the transformer T includes a plurality of output windings (C1-CM shown in a secondary side TB), the transformer T further includes an input winding (a 1 shown in a primary side TA shown in fig. 1), an input terminal VIN of the input winding a1 is inputted, and the input winding is converted into a plurality of outputs through a plurality of output windings in the secondary side TB, each of the power electronic conversion units (G1-GM shown in fig. 1) includes a plurality of power electronic converters (E11-E1N in G1 shown in fig. 1, EM 1-EMN in E21-E2N … … GM in G2), each output winding is connected with the input ends of a plurality of power electronic converters of one power electronic conversion unit, the output windings correspond to the power electronic conversion units one by one, and each branch output end is connected with at least the output end of one power electronic converter in each power electronic conversion unit. The transformer T is a multi-winding transformer, and the main controller can be a processor such as an MCU, a CPU, an FPA and the like. The power electronic converter may be a rectifier, a rectifying circuit, or the like.
The following describes characteristics of the rectification system in fig. 1.
As can be seen from the structure of the rectifying system, the total power of all the output windings is equal to the total power of all the branch output terminals, and the power of each output winding is equal, so the power relationship between the output windings and the branch output terminals is:
wherein, PC1，PC2……PCMPower for each output winding; p1，P2……PNThe power of each branch output end; m is the number of output windings, and M is more than or equal to 2.
Because the output windings correspond to the power electronic conversion units one by one, and each power electronic conversion unit comprises a plurality of power electronic converters, the power of the power electronic converters meets the following conditions:
wherein, PE11，PE12……PE1NThe power of each power electronic converter in the power electronic conversion unit G1; pE21，PE22……PE2NThe power of each power electronic converter in the power electronic conversion unit G2; pEM1，PEM2……PEMNThe power of each power electronic converter in the power electronic conversion group GM.
Since each branch output end is connected with at least the output end of one power electronic converter in each power electronic conversion unit, the relation between the power electronic converter in the working state and the corresponding branch output end meets the following conditions:
wherein, X isNFor electricity in working state corresponding to branch output terminalThe number of force electronic transducers; PK is the power corresponding to the power electronic converter at maximum efficiency.
Referring to fig. 2, fig. 2 is a flowchart of a power control method according to an embodiment of the present disclosure, applied to a main controller in a rectification system shown in fig. 1; as shown in fig. 2, the present power control method includes the following steps.
Step 201, obtaining a first power of each branch output terminal.
In specific implementation, the voltage and the current of the output end of each branch circuit are directly detected by the main controller, and then the corresponding first power of the output end of each branch circuit is calculated.
The processing as step 2021-step 2025 is performed for each said branch output. It is understood that the processing of steps 2021 to 2025 may be performed on each branch output end in turn as shown in fig. 2, or the processing of steps 2021 to 2025 may be performed on all branch output ends simultaneously; or, as shown in fig. 2, the processing of steps 2021 to 2025 may be performed on each branch output end sequentially, but the processing is performed on a plurality of branch output ends at a time, which is not limited herein.
In a specific implementation, the second power may be stored in a storage unit of the main controller in advance, or may be determined according to a historical operating state.
Specifically, referring to fig. 3, the maximum efficiency point of the power electronic converter is at a load state of 60%, and when the power electronic converter is at a load state of 20% or 100%, the efficiency is low, so that it can be known that the power electronic converter can reach the maximum efficiency only when the second power of the power electronic converter needs to be set to the power at the load state of 60%.
Step 2022, calculating a first number of second converters connected to the output end of the first branch according to the first power and the second power at the output end of the first branch, where the second converters are power electronic converters in an operating state, and the first number is used to indicate the number of the second converters at the second power.
In a possible embodiment, said calculating a first number of second converters connected to said first branch output from said first power and said second power comprises: and dividing the first power and the second power to obtain a first number of second converters connected with the output end of the first branch circuit.
Illustratively, the power of each second converter is the same because the first power at the output of the first branch is equal to the sum of the power of each second converter, and because of circuit characteristics, the power of each second converter needs to be balanced. Thus, the first number of the second converters is available from the first power and the second power.
It can be seen that in the present embodiment, the number of power electronic converters that are in operation at the present time is determined.
Step 2023, determining an actual number of the second converters and a first position at the current moment, wherein the first position is used for indicating the positions of the second converters distributed in the power electronic conversion unit.
In one possible embodiment, the determining the actual number and the first position of the second transducer at the current time includes: detecting whether a plurality of first converters at the output end of the first branch circuit are in an operating state to determine the actual number and the first position of the second converters.
For example, whether each of the first transducers is started or not can be sequentially detected in a polling mode, the started first transducers are determined as second transducers, the number of the second transducers is counted, and meanwhile the first positions of the second transducers are recorded. The first location may be an address or a number.
Further, it is also possible to mark each of the first transducers as a second transducer upon activation thereof, while recording the first position of the second transducer.
It can be seen that in this embodiment a determination of the number and position of the second transducers in the output of the first branch at the present moment is achieved.
In a specific implementation, the first number and the actual number need to be compared, so as to determine whether the current state of the second converter is the state with the highest efficiency.
Step 2025, when the first number is not consistent with the actual number, determining a third converter according to the first number, the actual number, and the first position, and adjusting the third converter, where the third converter is a power electronic converter that needs to be adjusted, and the working power of each adjusted third converter is the second power.
In a specific implementation, when the first number is not consistent with the actual number, it indicates that the second converter at the current time is not operating at the highest efficiency, and therefore it needs to determine how much the actual number differs from the first number, and if the actual number is greater than the first number, it indicates that the second converter is in a low-load state less than 60% of the load rate, and if the actual number is greater than the actual number, it indicates that the second converter is in a high-load state higher than 60% of the load rate. The absolute value of the difference between the actual number and the first number is the number of the third converters.
In one possible embodiment, the aspect of determining a third converter based on the first number, the actual number, and the first position, and adjusting the third converter comprises: determining the distribution condition of the third converter in each power electronic conversion unit according to the first number, the actual number and the first position; and adjusting the corresponding third converter according to the distribution condition.
For example, the distribution status may be indicated by an address of each third translator.
In a specific implementation, if a corresponding power electronic transformer is to be adjusted, a specific location, such as an address or a number, of the power electronic transformer to be adjusted needs to be determined first. After the specific position of the third transducer is determined, corresponding instructions may be sent to adjust the third transducer.
It can be seen that in this embodiment, positioning and adjustment of the third transducer is achieved.
In one possible embodiment, the aspect of determining the distribution condition of the third converter in each power electronic conversion unit includes: a third converter for determining a second number according to the first number and the actual number; and determining a second position of the third converter according to the first position and the second quantity, wherein the second position is used for indicating the distribution condition of the second quantity of the third converters in each power electronic conversion unit.
In specific implementation, after the actual number and the first position of the second converters at the current moment are known, the number of the third converters is further determined, and then the second position of the third converters is determined, so that the specific positions and the number of the power electronic converters to be adjusted can be known, and the power electronic converters at the corresponding positions can be adjusted through commands.
It can be seen that in this embodiment, the determination of the number and position of the third transducers is achieved based on the number and position of the second transducers at the present time.
In one possible embodiment, the aspect of determining the second number of third converters based on the first number and the actual number includes: subtracting the actual number from the first number to obtain the first value, wherein the first value is a positive number or a negative number; obtaining an absolute value of the first numerical value to obtain a second numerical value; setting the second number to the number of the third converters.
For example, since there are two different cases where the first number is greater than or less than the actual number, the difference between the first number and the actual number may be a positive number or a negative number, and the absolute value of the difference is the number of the third converters.
It can be seen that in this embodiment a determination of the number of third converters is achieved.
In one possible embodiment, said aspect of determining second positions of said second number of said third transducers comprises: if the first numerical value is a positive number, determining a second position of a second number of third converters from fourth converters, wherein the fourth converters are power electronic converters except the second converters in the first converters; if the first value is negative, a second number of second positions of the third transducer is determined from the second transducer.
In a specific implementation, the fourth converter is an un-started power electronic converter connected to the output end of the first branch, and therefore, the fourth converter needs to be controlled only when more power electronic converters need to be started; in contrast, the second converter is a power electronic converter connected to the output end of the first branch in an operating state, and therefore, the second converter needs to be controlled only when the power electronic converter needs to be turned off.
Specifically, when the first value is a positive number, it indicates that the first number is greater than the actual number, and therefore the number of the second converters at the current time is insufficient, and at this time, a second number of third converters need to be started from the fourth converters; on the contrary, when the first value is a negative number, it indicates that the first number is smaller than the actual number, and therefore, the number of the second converters at the current time is too large, and at this time, the second number of third converters needs to be turned off from the second converters.
It can be seen that in this embodiment, the determination of the respective third converter on the basis of different situations is achieved.
In one possible embodiment, the aspect of regulating the respective third converter according to the distribution condition includes: if the first numerical value is a positive number, controlling the third converter to be started to be in a working state; and if the first numerical value is a negative number, controlling the third converter to be closed.
Specifically, when the first value is a positive number, it indicates that the first number is greater than the actual number, and therefore the number of the second converters at the present time is insufficient, and at this time, the second converters are in a high-load state, and therefore, more power electronic converters need to be started to share the load, so as to ensure that each power electronic converter in the operating state can be at the highest efficiency. On the contrary, when the first value is a negative number, it indicates that the first number is smaller than the actual number, and therefore, the number of the second converters at the current time is too large, which results in that the second converters are in a low-load state, so that some power electronic converters need to be turned off to increase the load factor of each power electronic converter in the operating state, so as to ensure that each power electronic converter in the operating state can be at the highest efficiency.
It should be noted that when the number of the second converters is adjusted to the first number, the power of each of the second converters is the same due to the characteristics of the system structure, so that each of the second converters automatically adjusts the power to the second power without additional adjustment.
It can be seen that in this embodiment, a different control of the third converter on the basis of different situations is achieved.
In a possible embodiment, after determining the second positions of the second number of the third transformers from the fourth transformers if the first value is a positive number, the method further comprises: and when the number of the fourth converters is less than the second number, the whole rectifying system is closed, and fault alarm is carried out.
For example, the fault alarm may be an audio alarm, a video alarm, a text alarm, etc., and is not limited herein.
In specific implementation, if there is not enough power electronic converters in the current rectifying system to perform redundancy replacement, it indicates that the current rectifying system cannot achieve the highest efficiency in the current working scenario, and therefore, a fault alarm is performed.
Furthermore, the present embodiment may also be such that when a power electronic converter fails, resulting in a power electronic converter being in short supply, each power electronic converter may be tested to determine whether a failure has occurred.
It will be appreciated that although the power electronic converters cannot achieve maximum efficiency when the number of fourth converters is less than the second number, they can still operate under high load conditions, and the fault alarm is used to prompt personnel for maintenance to ensure the efficiency of the operation of the entire rectifier system.
It can be seen that, in the embodiment, the fault alarm function of the rectifier system is realized.
In a possible embodiment, no adjustment is made when the first number corresponds to the actual number.
In particular, if the first number corresponds to the actual number, this indicates that the second converter is at its maximum operating efficiency and therefore does not require regulation.
In summary, according to the power control method and the related device provided by the present application, the power of the power electronic converter at the highest efficiency is calculated to determine whether the power electronic converter in the working state at the present time is at the highest efficiency, and then when the power electronic converter is at a low efficiency, the power of the power electronic converter is adjusted to ensure that the power electronic converter is at the highest efficiency.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It will be appreciated that the main controller, in order to implement the above-described functions, includes corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. 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 application.
In the embodiment of the present application, the main controller may be divided into the functional units according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing 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. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Referring to fig. 4, an embodiment of the present application provides a power control apparatus 4, which is applied to a main controller of a rectification system, where the rectification system includes the main controller and a rectification module, the main controller is connected to the rectification module, the rectification module includes a transformer, a plurality of power electronic conversion units and a plurality of branch output terminals, the transformer includes a plurality of output windings, each power electronic conversion unit includes a plurality of power electronic converters, each output winding is connected to an input terminal of one power electronic conversion unit, the plurality of output windings correspond to the plurality of power electronic conversion units one by one, and each branch output terminal is connected to at least an output terminal of one power electronic converter in each power electronic conversion unit; the device comprises:
an obtaining unit 40, configured to obtain the first power of each branch output end, and perform the following processing for each branch output end: acquiring second power of a first converter connected with a first branch output end, wherein the first branch output end is a currently processed branch output end, the first converter is a power electronic converter connected with the first branch output end, and the second power is power of the first converter at the highest efficiency;
a calculating unit 41, configured to perform the following processing for each branch output: calculating a first number of second converters connected to the first branch output end according to the first power and the second power of the first branch output end, wherein the second converters are power electronic converters in a working state, and the first number is used for indicating the number of the second converters at the second power; and the method is used for determining the actual number and the first position of the second converter, wherein the actual number is the number of the second converter at the current moment, and the first position is used for indicating the position of the second converter distributed in the power electronic conversion unit;
a comparing unit 42, configured to perform the following processing for each branch output: comparing the first quantity to the actual quantity;
an adjusting unit 43, configured to perform the following processing for each branch output: and when the first number is inconsistent with the actual number, determining a third converter according to the first number, the actual number and the first position, and adjusting the third converter, wherein the third converter is a power electronic converter needing to be adjusted, and the working power of each adjusted third converter is the second power.
In a possible embodiment, in terms of calculating the first number of second converters connected to the output end of the first branch according to the first power and the second power, the calculating unit 41 is specifically configured to: and dividing the first power and the second power to obtain a first number of second converters connected with the output end of the first branch circuit.
In a possible embodiment, in terms of determining the actual number and the first position of the second transducer at the current time, the calculating unit 41 is specifically configured to: detecting whether a plurality of first converters at the output end of the first branch circuit are in an operating state to determine the actual number and the first position of the second converters.
In a possible embodiment, in terms of determining a third converter according to the first number, the actual number and the first position, and adjusting the third converter, the adjusting unit 43 is specifically configured to: determining the distribution condition of the third converter in each power electronic conversion unit according to the first number, the actual number and the first position; and adjusting the corresponding third converter according to the distribution condition.
In a possible embodiment, in terms of determining the distribution of the third converter in each of the power electronic converter units, the adjusting unit 43 is specifically configured to: a third converter for determining a second number according to the first number and the actual number; and determining a second position of the third converter according to the first position and the second quantity, wherein the second position is used for indicating the distribution condition of the second quantity of the third converters in each power electronic conversion unit.
In a possible embodiment, in the aspect that the second number of third converters is determined according to the first number and the actual number, the adjusting unit 43 is specifically configured to: subtracting the actual number from the first number to obtain the first value, wherein the first value is a positive number or a negative number; obtaining an absolute value of the first numerical value to obtain a second numerical value; setting the second number to the number of the third converters.
In a possible embodiment, in said aspect of determining the second positions of said second number of said third transducers, said adjusting unit 43 is specifically configured to: if the first numerical value is a positive number, determining a second position of a second number of third converters from fourth converters, wherein the fourth converters are power electronic converters except the second converters in the first converters; if the first value is negative, a second number of second positions of the third transducer is determined from the second transducer.
In a possible embodiment, in terms of adjusting the corresponding third converter according to the distribution status, the adjusting unit 43 is specifically configured to: if the second number is positive, controlling the third converter to be started to be in a working state; and if the second number is a negative number, controlling the third converter to be closed.
In a possible embodiment, after the aspect of determining the second position of the second number of the third transducers from the fourth transducers if the first value is a positive number, the apparatus further comprises: and the alarm unit is used for closing the whole rectifying system and giving a fault alarm when the number of the fourth converters is less than the second number.
The present invention also provides a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps in the method described in the above embodiments.
The present invention also provides an electronic device 5, as shown in fig. 5, which includes at least one processor (processor) 51; a display screen 52; and a memory (memory) 53, and may further include a communication Interface (Communications Interface) 54 and a bus 55. The processor 51, the display 52, the memory 53 and the communication interface 54 can communicate with each other through the bus 55. The display screen 52 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 54 may transmit information. The processor 51 may call logic instructions in the memory 53 to perform the methods in the above embodiments.
Optionally, the electronic device 5 may be the main controller described above or other electronic devices, and is not limited herein.
In addition, the logic instructions in the memory 53 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 53, which is a computer-readable storage medium, may be configured to store a software program, a computer-executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 51 executes functional applications and data processing, i.e. implements the methods in the above-described embodiments, by running software programs, instructions or modules stored in the memory 53.
The memory 53 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the electronic device 5, and the like. Further, the memory 53 may include a high-speed random access memory, and may also include a nonvolatile memory. For example, a variety of media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, may also be transient storage media.
In addition, the specific processes loaded and executed by the storage medium and the instruction processors in the mobile terminal are described in detail in the method, and are not stated herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. A power control method is characterized by being applied to a main controller of a rectification system, wherein the rectification system comprises the main controller and a rectification module, the main controller is connected with the rectification module, the rectification module comprises a transformer, a plurality of power electronic conversion units and a plurality of branch output ends, the transformer comprises a plurality of output windings, each power electronic conversion unit comprises a plurality of power electronic converters, each output winding is connected with the input ends of the plurality of power electronic converters of one power electronic conversion unit, the plurality of output windings correspond to the plurality of power electronic conversion units one by one, and each branch output end is at least connected with the output end of one power electronic converter in each power electronic conversion unit; the method comprises the following steps:
acquiring first power of an output end of each branch circuit;
performing the following processing for each branch output terminal:
acquiring second power of a first converter connected with a first branch output end, wherein the first branch output end is a currently processed branch output end, the first converter is a power electronic converter connected with the first branch output end, and the second power is power of the first converter at the highest efficiency;
calculating a first number of second converters connected to the first branch output end according to the first power and the second power of the first branch output end, wherein the second converters are power electronic converters in a working state, and the first number is used for indicating the number of the second converters at the second power;
determining the actual number and the first position of the second converter, wherein the actual number is the number of the second converter at the current moment, and the first position is used for indicating the position of the second converter distributed in the power electronic conversion unit; upon activation of each of the first transducers, marking the first transducer as a second transducer while recording a first position of the second transducer;
comparing the first quantity to the actual quantity;
when the first number is inconsistent with the actual number, determining a third converter according to the first number, the actual number and the first position, and adjusting the third converter, wherein the third converter is a power electronic converter needing to be adjusted, and the working power of each adjusted third converter is the second power;
the determining a third converter according to the first number, the actual number, and the first position, and adjusting the third converter includes: determining the distribution condition of the third converter in each power electronic conversion unit according to the first number, the actual number and the first position; adjusting the corresponding third converter according to the distribution condition;
the determining of the distribution condition of the third converter in each power electronic conversion unit comprises: a third converter for determining a second number according to the first number and the actual number; determining a second position of the third converter according to the first position and the second number, wherein the second position is used for indicating the distribution condition of the second number of the third converters in each power electronic conversion unit; when the number of the fourth converters is smaller than the second number, the power electronic converter cannot achieve the highest efficiency, but can still work in a high-load state, and the fault alarm is used for prompting a worker to maintain so as to ensure the working efficiency of the whole rectifying system;
the determining a second number of third converters according to the first number and the actual number includes: subtracting the actual number from the first number to obtain the first value, wherein the first value is a positive number or a negative number;
said determining a second position of said third transducer from said first position and said second quantity comprises: if the first numerical value is a positive number, determining a second position of a second number of third converters from fourth converters, wherein the fourth converters are power electronic converters except the second converters in the first converters; determining a second number of second positions of the third transducer from the second transducer if the first value is negative;
when the power electronic converters are insufficient, detecting each power electronic converter to determine whether a fault occurs;
and when the number of the fourth converters is smaller than the second number, prompting a worker to maintain through fault alarm.
2. The method of claim 1, wherein calculating a first number of second converters connected to the first branch output based on the first power and the second power comprises:
and dividing the first power and the second power to obtain a first number of second converters connected with the output end of the first branch circuit.
3. The method of claim 1 or 2, wherein said determining the actual number and first position of the second transducer at the current time comprises:
detecting whether a plurality of first converters at the output end of the first branch circuit are in an operating state to determine the actual number and the first position of the second converters.
4. The method of claim 1, wherein determining a second number of third transducers from the first number and the actual number comprises:
obtaining an absolute value of the first numerical value to obtain a second numerical value;
setting the second number to the number of the third converters.
5. The method of claim 1, wherein said adjusting the respective third converter according to the profile comprises:
if the first numerical value is a positive number, controlling the third converter to be started to be in a working state;
and if the first numerical value is a negative number, controlling the third converter to be closed.
6. The method of claim 1, wherein after determining a second number of second positions of the third transducer from a fourth transducer if the first value is a positive number, the method further comprises:
and when the number of the fourth converters is less than the second number, the whole rectifying system is closed, and fault alarm is carried out.
7. A power control device is characterized by being applied to a main controller of a rectification system, wherein the rectification system comprises the main controller and a rectification module, the main controller is connected with the rectification module, the rectification module comprises a transformer, a plurality of power electronic conversion units and a plurality of branch output ends, the transformer comprises a plurality of output windings, each power electronic conversion unit comprises a plurality of power electronic converters, each output winding is connected with the input ends of the plurality of power electronic converters of one power electronic conversion unit, the plurality of output windings correspond to the plurality of power electronic conversion units one by one, and each branch output end is at least connected with the output end of one power electronic converter in each power electronic conversion unit; the device comprises:
an obtaining unit, configured to obtain a first power of each branch output end, and perform the following processing for each branch output end: acquiring second power of a first converter connected with a first branch output end, wherein the first branch output end is a currently processed branch output end, the first converter is a power electronic converter connected with the first branch output end, and the second power is power of the first converter at the highest efficiency;
a computing unit, configured to perform the following processing for each branch output: calculating a first number of second converters connected to the first branch output end according to the first power and the second power of the first branch output end, wherein the second converters are power electronic converters in a working state, and the first number is used for indicating the number of the second converters at the second power; and the method is used for determining the actual number and the first position of the second converter, wherein the actual number is the number of the second converter at the current moment, and the first position is used for indicating the position of the second converter distributed in the power electronic conversion unit; upon activation of each of the first transducers, marking the first transducer as a second transducer while recording a first position of the second transducer;
a comparing unit, configured to perform the following processing for each branch output terminal: comparing the first quantity to the actual quantity;
an adjusting unit, configured to perform the following processing for each branch output: when the first number is inconsistent with the actual number, determining a third converter according to the first number, the actual number and the first position, and adjusting the third converter, wherein the third converter is a power electronic converter needing to be adjusted, and the working power of each adjusted third converter is the second power;
in the aspect that a third converter is determined according to the first number, the actual number, and the first position, and the third converter is adjusted, the adjusting unit is specifically configured to: determining the distribution condition of the third converter in each power electronic conversion unit according to the first number, the actual number and the first position; adjusting the corresponding third converter according to the distribution condition;
in the aspect of determining the distribution condition of the third converter in each power electronic conversion unit, the adjusting unit is specifically configured to: a third converter for determining a second number according to the first number and the actual number; determining a second position of the third converter according to the first position and the second number, wherein the second position is used for indicating the distribution condition of the second number of the third converters in each power electronic conversion unit;
in an aspect in which a second number of third converters is determined according to the first number and the actual number, the adjusting unit is specifically configured to: subtracting the actual number from the first number to obtain the first value, wherein the first value is a positive number or a negative number;
in the aspect of determining the second position of the third transducer based on the first position and the second quantity, the adjusting unit is specifically configured to: if the first numerical value is a positive number, determining a second position of a second number of third converters from fourth converters, wherein the fourth converters are power electronic converters except the second converters in the first converters; determining a second number of second positions of the third transducer from the second transducer if the first value is negative;
when the power electronic converters are insufficient, detecting each power electronic converter to determine whether a fault occurs;
and when the number of the fourth converters is smaller than the second number, prompting a worker to maintain through fault alarm.
8. An electronic device comprising a processor, a memory for storing one or more programs and configured for execution by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-6.
9. A computer-readable storage medium, characterized by storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute instructions of the steps in the method according to any one of claims 1-6.
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