CN111509740A - Method and device for calculating mean value of intelligent pit filling - Google Patents
Method and device for calculating mean value of intelligent pit filling Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R29/16—Measuring asymmetry of polyphase networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The invention discloses a method and a device for calculating the mean value of intelligent pit filling, belongs to the technical field of electric power, and particularly relates to a method for processing three-phase load unbalance based on intelligent pit filling, which comprises the following steps: obtaining the current of each phase in the three phases and the current of each phase change switch; under the condition of reaching the maximum load current, calculating the unbalance degree of the three-phase load according to the acquired current of each phase; and under the condition that the phase change is required according to the unbalance degree, acquiring the appropriate phase change switch for each phase according to the current of each phase and the current of each phase change switch, performing phase change operation, and storing phase change information. The invention can monitor the balance condition of the three-phase load in real time, automatically carry out phase change operation according to the current of each phase and the current of each phase change switch under the condition of detecting the unbalance condition of the three-phase load, does not need manual operation or power failure, avoids misoperation during manual intervention, can quickly adjust the three-phase current in real time, and effectively reduces the line loss.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a mean value calculation method and device for intelligent pit filling.
Background
With the development of national economy, the living standard of people is increasingly improved, the load of a power grid is increasingly increased, and because the design and planning work of an early power grid is not well known, the low-voltage power distribution network system is easy to generate the condition that a large number of single-phase loads are concentrated in one phase or two phases, and the unbalanced loads can cause the problem that the three phases of the power distribution system are unbalanced, so that the three-phase voltage and current of the power supply system are unbalanced, and the phenomenon is particularly obvious in regions with developed economic level.
Unbalanced three phase can bring great harm, will lead to the rotating electrical machines additional to generate heat and vibrate, and transformer magnetic leakage increases and local overheat, and the power grid line loss increases and multiple protection and automatics mistake seriously influence the power supply quality, and then increases the line loss, reduces the power supply reliability.
The inventor finds that in the prior art, the three-wire load is adjusted by manually switching the power supply phases of the single-phase load, so that the problem that the normal production and life of a power user are seriously influenced by power failure operation when the three-phase load is unbalanced is solved.
Disclosure of Invention
In order to at least solve the technical problem, the invention provides an intelligent pit filling mean value calculation method.
According to a first aspect of the present invention, there is provided a method for calculating a mean value of intelligent pit filling, including:
obtaining the current of each phase in the three phases and the current of each phase change switch;
under the condition of reaching the maximum load current, calculating the unbalance degree of the three-phase load according to the acquired current of each phase;
and under the condition that the phase change is required according to the unbalance degree, acquiring the appropriate phase change switch for each phase according to the current of each phase and the current of each phase change switch, performing phase change operation, and storing phase change information.
Further, the air conditioner is provided with a fan,
the calculating the unbalance degree of the three-phase load according to the acquired current of each phase comprises the following steps:
obtaining the maximum current and the minimum current from the obtained currents of all phases, carrying out subtraction on the maximum current and the minimum current, carrying out division on the difference value of the obtained currents and the maximum current, converting the obtained calculation result into percentage, and using the converted result as the unbalance degree of the three-phase load.
Further, the air conditioner is provided with a fan,
and judging that the phase needs to be changed according to the unbalance degree, wherein the phase needs to be changed when the unbalance degree reaches a preset alarm value and the load unbalance duration reaches the early warning time.
Further, the air conditioner is provided with a fan,
the load unbalance duration includes obtaining a maximum current, a minimum current, and an intermediate current from the currents of the phases, determining that the load is unbalanced when the maximum current, the minimum current, and the intermediate current are different, starting timing, and taking a timing result in the case of the load unbalance as the load unbalance duration.
Further, the air conditioner is provided with a fan,
the preset alarm value is 60% of the preset unbalance degree recovery limit value.
Further, the air conditioner is provided with a fan,
the obtaining of the adaptive commutation switch for each phase according to the current of each phase and the current of each commutation switch, performing commutation operation, and storing commutation information includes:
and calculating according to the current of each phase and the current of each phase change switch to obtain the basic current of each phase, performing phase change operation according to the basic current of each phase and the current of each phase change switch, and storing phase change information.
Further, the air conditioner is provided with a fan,
the calculating according to the current of each phase and the current of each phase change switch to obtain the basic current of each phase, performing phase change operation according to the basic current of each phase and the current of each phase change switch, and storing phase change information includes:
calculating the total current of each phase according to the current of each phase, calculating the total current of each phase change switch according to the current of each phase change switch, and performing subtraction calculation on the total current of each phase and the total current of the corresponding phase change switch to obtain a calculation result as the basic current of each phase;
respectively sequencing the current of each phase change switch and the current of each phase according to a preset sequencing rule to obtain a current sequencing result of each phase change switch and a current sequencing result of each phase;
and according to the current sequencing result of each phase change switch and the current sequencing result of each phase, performing phase change according to a preset phase change method, and storing phase change information.
According to a second aspect of the present invention, there is provided an intelligent pit-filling average calculation apparatus, comprising:
the acquisition module is used for acquiring the current of each phase in the three phases and the current of each phase change switch;
the calculating module is used for calculating the unbalance degree of the three-phase load according to the acquired current of each phase under the condition of reaching the maximum load current;
and the phase commutation module is used for acquiring the adaptive phase commutation switches for the phases according to the current of each phase and the current of each phase commutation switch under the condition that the phase commutation is required according to the unbalance degree, performing phase commutation operation and storing phase commutation information.
According to a third aspect of the invention, there is provided a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method as described above when executing the program.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium storing a program which, when executed, is capable of implementing the method as described above.
The invention has the beneficial effects that: the method comprises the steps of obtaining the current of each phase in the three phases and the current of each phase change switch, judging the maximum load current, finishing phase change operation for each phase change switch matched and adapted according to the current of each phase and the current of each phase change switch under the condition that the maximum load current is reached and the phase change is needed, monitoring the balance condition of the three-phase load in real time, automatically carrying out the phase change operation according to the current of each phase and the current of each phase change switch under the condition that the three-phase load is detected to be unbalanced, avoiding misoperation and dangerous conditions during manual intervention without manual operation, and in addition, according to the technical scheme, the method can be implemented without power failure, can be used for adjusting the three-phase current in real time and quickly, can guarantee that a power grid is stably in three-phase balance for a long time, and effectively reduces line loss.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which,
FIG. 1 is a flowchart of a method for calculating the mean value of intelligent pit filling according to the present invention;
fig. 2 is a block diagram of a structure of an intelligent pit filling mean calculation device according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The invention provides a mean value calculation method for intelligent pit filling, which comprises the following steps of:
step 201: obtaining the current of each phase in the three phases and the current of each phase change switch;
in the embodiment of the invention, the current of each phase line of the three phase lines is acquired in real time, namely the current of each phase. The three-phase load can adopt three phase lines to provide power for electric equipment, the electric equipment is used for doing work, the unbalanced three-phase load can enable the phase currents of all the phases to be very different, and the phase lines with overhigh current are easy to heat and fire, so that the problem of electrical fire is caused.
Step 202: under the condition of reaching the maximum load current, calculating the unbalance degree of the three-phase load according to the acquired current of each phase;
in the embodiment of the present invention, calculating a total current according to the acquired current of each phase of the three phases, performing a judgment, and calculating an imbalance of the three-phase load when a maximum load current is reached, where calculating the imbalance of the three-phase load according to the acquired current of each phase includes:
obtaining the maximum current and the minimum current from the obtained currents of all phases, carrying out subtraction on the maximum current and the minimum current, carrying out division on the difference value of the obtained currents and the maximum current, converting the obtained calculation result into percentage, and using the converted result as the unbalance degree of the three-phase load.
Step 203: and under the condition that the phase change is required according to the unbalance degree, acquiring the appropriate phase change switch for each phase according to the current of each phase and the current of each phase change switch, performing phase change operation, and storing phase change information.
In the embodiment of the invention, the unbalance degree is judged, and the phase change is judged to be needed under the condition that the unbalance degree reaches the preset alarm value and the load unbalance duration time reaches the early warning time. Wherein, the preset alarm value is 60% of the preset unbalance degree recovery limit value.
Further, a load imbalance duration, comprising: the method includes obtaining a maximum current, a minimum current, and an intermediate current from currents of respective phases, determining that the load is unbalanced when the maximum current, the minimum current, and the intermediate current are different, starting timing, and taking a result of timing time when the load is unbalanced as a load unbalance duration.
In the embodiment of the invention, under the condition that the phase change is needed, the basic current of each phase is obtained according to the current of each phase and the current of each phase change switch, the phase change operation is carried out according to the basic current of each phase and the current of each phase change switch, and the phase change information is stored.
Further, calculating the basic current of each phase according to the current of each phase and the current of each phase change switch;
respectively sequencing the current of each phase change switch and the current of each phase according to a preset sequencing rule to obtain a current sequencing result of each phase change switch and a current sequencing result of each phase, wherein the preset sequencing rule can be in a descending order or in a descending order;
and according to the current sequencing result of each phase change switch and the current sequencing result of each phase, performing phase change according to a preset phase change method, and storing phase change information.
Further, calculating the total current of each phase according to the current of each phase, calculating the total current of each phase change switch according to the current of each phase change switch, and performing subtraction calculation on the total current of each phase and the total current of the corresponding phase change switch to obtain a calculation result as the basic current of each phase;
respectively sequencing the current of each phase change switch and the current of each phase from large to small to obtain the current sequencing result of each phase change switch and the current sequencing result of each phase, and obtaining a linked list of controllable measurement points according to the current sequencing result of each phase change switch;
finding out the current controllable switches, namely the current maximum one of the phase change switches from the linked list, inserting the phase change switch corresponding to the current of the current maximum phase change switch into the current minimum phase, and removing the phase change switch corresponding to the current of the maximum phase change switch;
under the condition that the linked list is not empty, the three-phase basic current is recalculated, and the phase change operation is carried out until the linked list is empty.
And under the condition that the linked list is empty, namely under the condition that new total current after phase commutation is obtained, calculating the unbalance degree after phase commutation, and storing the unbalance degree, the phase commutation times and the phase commutation actions of all measuring points as commutation information.
In the invention, the maximum load current is judged by obtaining the current of each phase in the three phases and the current of each phase change switch, and the phase change operation is completed for each phase change switch matched and adapted according to the current of each phase and the current of each phase change switch under the condition of reaching the maximum load current and judging the phase change required.
In another embodiment of the present invention, a method for calculating an average value of intelligent pit filling is provided, including:
step 01: acquiring the current of each phase and the current of each phase change switch in the three phases in real time;
in the embodiment of the invention, the current of each phase line of the three phase lines is acquired in real time, namely the current of each phase. The three-phase load can adopt three phase lines to provide power for electric equipment, the electric equipment is used for doing work, the unbalanced three-phase load can enable the phase currents of all the phases to be very different, and the phase lines with overhigh current are easy to heat and fire, so that the problem of electrical fire is caused.
Step 02: judging the acquired current of each phase, and calculating the unbalance degree of the three-phase load under the condition of reaching the maximum load current;
in the embodiment of the invention, the total current is calculated according to the acquired current of each phase in three phases, the total current is judged, under the condition that the maximum load current is reached, the maximum current and the minimum current are acquired from the acquired current of each phase, the maximum current and the minimum current are subjected to subtraction, the difference value of the acquired current is subjected to division operation with the maximum current, the acquired calculation result is converted into percentage, and the converted result is used as the unbalance degree of the three-phase load.
Step 03: judging whether phase change is needed according to the unbalance degree, if so, executing step 04; otherwise, ending.
In the embodiment of the invention, the unbalance degree is judged, and the phase change is judged to be needed under the condition that the unbalance degree reaches the preset alarm value and the load unbalance duration time reaches the early warning time. Wherein, the preset alarm value is 60% of the preset unbalance degree recovery limit value.
Further, a load imbalance duration, comprising: the method includes obtaining a maximum current, a minimum current, and an intermediate current from currents of respective phases, determining that the load is unbalanced when the maximum current, the minimum current, and the intermediate current are different, starting timing, and taking a result of timing time when the load is unbalanced as a load unbalance duration.
Step 04: calculating according to the current of each phase and the current of each phase change switch to obtain the basic current of each phase;
in the embodiment of the invention, the total current of each phase is calculated according to the current of each phase, the total current of each phase change switch is calculated according to the current of each phase change switch, the total current of each phase and the total current of the corresponding phase change switch are subjected to subtraction calculation, and the obtained calculation result is used as the basic current of each phase.
Step 05: respectively sequencing the current of each phase change switch and the current of each phase according to a preset sequencing rule to obtain a current sequencing result of each phase change switch and a current sequencing result of each phase, and obtaining a linked list of controllable measurement points according to the current sequencing result of each phase change switch;
in the embodiment of the invention, the preset sequencing rule can be in a sequence from large to small or a sequence from small to large, and further, the currents of the phase change switches and the currents of the phases are sequenced respectively according to the sequence from large to small to obtain the current sequencing result of the phase change switches and the current sequencing result of the phases, and a linked list of the controllable measurement points is obtained according to the current sequencing result of the phase change switches;
step 06: and according to the current sorting result of each phase change switch and the sorting result of the current of each phase, performing phase change according to a preset phase change method, and deleting the phase change switch nodes with the phase change from the linked list.
In the embodiment of the invention, the current controllable switch, namely the current maximum one of the phase change switches is found from the linked list, the phase change switch corresponding to the current of the current maximum phase change switch is inserted into the current minimum phase, and the phase change switch corresponding to the current of the maximum phase change switch is removed.
Step 07: judging whether the linked list is empty, if so, executing step 04; otherwise, executing step 08;
in the embodiment of the invention, the length of the linked list is reduced by one unit every time the commutation operation is executed. In the case of an empty linked list, that is, there is no commutation switch to be commutated, that is, commutation is completed.
Step 08: and calculating the unbalance degree after the phase commutation, and storing the unbalance degree after the phase commutation, the phase commutation times and the phase commutation actions of each measuring point as phase commutation information.
In this step, the method for calculating the unbalance degree is the same as that in step 02, and is not described herein again.
In another aspect, an intelligent pit-filling average calculation device, as shown in fig. 2, includes:
the acquisition module 401 is configured to acquire currents of the three phases and currents of the phase change switches;
in the embodiment of the present invention, the collecting module 401 is configured to obtain the current of each of the three phase lines in real time, that is, the current of each phase. The three-phase load can adopt three phase lines to provide power for electric equipment, the electric equipment is used for doing work, the unbalanced three-phase load can enable the phase currents of all the phases to be very different, and the phase lines with overhigh current are easy to heat and fire, so that the problem of electrical fire is caused.
A calculating module 402, configured to calculate an imbalance of the three-phase load according to the acquired current of each phase when a maximum load current is reached;
in this embodiment of the present invention, the calculating module 402 calculates a total current according to the obtained currents of the three phases, performs a judgment, and calculates an imbalance degree of the three-phase load when a maximum load current is reached, where the calculating the imbalance degree of the three-phase load according to the obtained currents of the three phases includes:
obtaining the maximum current and the minimum current from the obtained currents of all phases, carrying out subtraction on the maximum current and the minimum current, carrying out division on the difference value of the obtained currents and the maximum current, converting the obtained calculation result into percentage, and using the converted result as the unbalance degree of the three-phase load.
And a commutation module 403, configured to obtain an appropriate commutation switch for each phase according to the current of each phase and the current of each commutation switch, perform a commutation operation, and store commutation information when it is determined that commutation is required according to the degree of imbalance.
In the embodiment of the present invention, the commutation module 403 determines the degree of unbalance, and determines that commutation is required when the degree of unbalance reaches a preset alarm value and the duration of the load unbalance reaches the warning time. Wherein, the preset alarm value is 60% of the preset unbalance degree recovery limit value.
Further, a load imbalance duration, comprising: the method includes obtaining a maximum current, a minimum current, and an intermediate current from currents of respective phases, determining that the load is unbalanced when the maximum current, the minimum current, and the intermediate current are different, starting timing, and taking a result of timing time when the load is unbalanced as a load unbalance duration.
In the embodiment of the invention, under the condition that the phase change is needed, the basic current of each phase is obtained according to the current of each phase and the current of each phase change switch, the phase change operation is carried out according to the basic current of each phase and the current of each phase change switch, and the phase change information is stored.
Further, the base current of each phase is calculated from the current of each phase and the current of each commutation switch.
And respectively sequencing the current of each phase change switch and the current of each phase according to a preset sequencing rule to obtain the current sequencing result of each phase change switch and the current sequencing result of each phase, wherein the preset sequencing rule can be in a descending order or in a descending order.
And according to the current sequencing result of each phase change switch and the current sequencing result of each phase, performing phase change according to a preset phase change method, and storing phase change information.
Furthermore, the commutation module 403 calculates a total current of each phase according to the current of each phase, calculates a total current of each commutation switch according to the current of each commutation switch, and subtracts the total current of each phase and the total current of the corresponding commutation switch to obtain a calculation result as a base current of each phase.
And respectively sequencing the current of each phase change switch and the current of each phase from large to small to obtain the current sequencing result of each phase change switch and the current sequencing result of each phase, and obtaining a linked list of the controllable measurement points according to the current sequencing result of each phase change switch.
And finding out the current maximum current of all controllable switches, namely the phase change switches from the linked list, inserting the phase change switch corresponding to the current of the current maximum phase change switch into the current minimum phase, and removing the phase change switch corresponding to the current of the maximum phase change switch.
Under the condition that the linked list is not empty, the three-phase basic current is recalculated, and the phase change operation is carried out until the linked list is empty.
And under the condition that the linked list is empty, namely under the condition that new total current after phase commutation is obtained, calculating the unbalance degree after phase commutation, and storing the unbalance degree, the phase commutation times and the phase commutation actions of all measuring points as commutation information.
In the embodiment of the invention, the current of each phase in the three phases and the current of each phase change switch are obtained in real time through the acquisition module, the maximum load current is judged by utilizing the calculation module, the unbalance degree is calculated, the phenomenon of unbalanced load can be found in time, under the condition that the phase change is needed, the phase change operation is completed for each phase change switch matched and adapted through the phase change module according to the current of each phase and the current of each phase change switch, the balance condition of the three-phase load can be monitored in real time, the phase change operation is automatically carried out according to the current of each phase and the current of each phase change switch under the condition that the three-phase load is detected to be unbalanced, the manual operation is not needed, the occurrence of misoperation and dangerous conditions during the manual intervention is avoided, in addition, the technical scheme of the invention can be implemented without power failure, the three-phase currents can be adjusted in real time and quickly, the three-phase balance control system can ensure that the power grid is stably in three-phase balance for a long time, and effectively reduces the line loss.
In another embodiment of the present invention, an apparatus for processing three-phase load imbalance based on intelligent pit filling is provided, which includes:
the acquisition module 401 is configured to acquire currents of the three phases and currents of the phase change switches in real time;
in the embodiment of the present invention, the collecting module 401 is configured to obtain the current of each of the three phase lines in real time, that is, the current of each phase. The three-phase load can adopt three phase lines to provide power for electric equipment, the electric equipment is used for doing work, the unbalanced three-phase load can enable the phase currents of all the phases to be very different, and the phase lines with overhigh current are easy to heat and fire, so that the problem of electrical fire is caused.
A calculating module 402, configured to determine the obtained current of each phase, and calculate an imbalance of the three-phase load when the maximum load current is reached;
in this embodiment of the present invention, the calculating module 402 is configured to calculate a total current according to the obtained currents of the three phases, perform judgment, obtain a maximum current and a minimum current from the obtained currents of the three phases when a maximum load current is reached, perform subtraction on the maximum current and the minimum current, perform division on a difference between the obtained currents and the maximum current, convert an obtained calculation result into a percentage, and convert an obtained result into an imbalance degree of the three-phase load.
In the embodiment of the present invention, the commutation module 403 determines the degree of unbalance, and determines that commutation is required when the degree of unbalance reaches a preset alarm value and the duration of the load unbalance reaches the warning time. Wherein, the preset alarm value is 60% of the preset unbalance degree recovery limit value.
Further, a load imbalance duration, comprising: the method includes obtaining a maximum current, a minimum current, and an intermediate current from currents of respective phases, determining that the load is unbalanced when the maximum current, the minimum current, and the intermediate current are different, starting timing, and taking a result of timing time when the load is unbalanced as a load unbalance duration.
The basic current calculation submodule is used for obtaining basic current of each phase according to the current of each phase and the current calculation of each phase change switch, respectively sequencing the current of each phase change switch and the current of each phase according to a preset sequencing rule to obtain a current sequencing result of each phase change switch and a current sequencing result of each phase, obtaining a linked list of controllable measuring points according to the current sequencing result of each phase change switch, carrying out phase change according to a preset phase change method according to the current sequencing result of each phase change switch and the current sequencing result of each phase, deleting a phase change switch node which has changed phases from the linked list, and triggering the second judgment submodule;
in the embodiment of the present invention, the basic current calculation submodule is specifically configured to calculate a total current of each phase according to the current of each phase, calculate a total current of each phase change switch according to the current of each phase change switch, perform subtraction calculation on the total current of each phase and the total current of the corresponding phase change switch, and obtain a calculation result as the basic current of each phase.
In the embodiment of the present invention, the preset ordering rule may be in a descending order or in a descending order, and further, the currents of the phase change switches and the currents of the phases are respectively ordered according to the descending order, so as to obtain the current ordering result of the phase change switches and the ordering result of the currents of the phases, and obtain the linked list of the controllable measurement points according to the current ordering result of the phase change switches.
In the embodiment of the invention, the current controllable switch, namely the current maximum one of the phase change switches is found from the linked list, the phase change switch corresponding to the current of the current maximum phase change switch is inserted into the current minimum phase, and the phase change switch corresponding to the current of the maximum phase change switch is removed.
The second judgment submodule is used for judging whether the linked list is empty or not, and if so, the basic current calculation submodule is triggered; otherwise, triggering a storage submodule;
in the embodiment of the invention, the length of the linked list is reduced by one unit every time the commutation operation is executed. In the case of an empty linked list, that is, there is no commutation switch to be commutated, that is, commutation is completed.
And the storage submodule is used for calculating the unbalance after the phase commutation, and storing the unbalance after the phase commutation, the commutation times and the commutation actions of each measuring point as commutation information.
The method for calculating the degree of unbalance is the same as the method adopted by the calculation module, and is not described herein again.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be understood that the above detailed description of the technical solution of the present invention with the help of preferred embodiments is illustrative and not restrictive. On the basis of reading the description of the invention, a person skilled in the art can modify the technical solutions described in the embodiments, or make equivalent substitutions for some technical features; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for calculating the mean value of intelligent pit filling is characterized by comprising the following steps:
obtaining the current of each phase in the three phases and the current of each phase change switch;
under the condition of reaching the maximum load current, calculating the unbalance degree of the three-phase load according to the acquired current of each phase;
and under the condition that the phase change is required according to the unbalance degree, acquiring the appropriate phase change switch for each phase according to the current of each phase and the current of each phase change switch, performing phase change operation, and storing phase change information.
2. The method of claim 1,
the calculating the unbalance degree of the three-phase load according to the acquired current of each phase comprises the following steps:
obtaining the maximum current and the minimum current from the obtained currents of all phases, carrying out subtraction on the maximum current and the minimum current, carrying out division on the difference value of the obtained currents and the maximum current, converting the obtained calculation result into percentage, and using the converted result as the unbalance degree of the three-phase load.
3. The method of claim 1,
and judging that the phase needs to be changed according to the unbalance degree, wherein the phase needs to be changed when the unbalance degree reaches a preset alarm value and the load unbalance duration reaches the early warning time.
4. The method of claim 3,
the load unbalance duration includes obtaining a maximum current, a minimum current, and an intermediate current from the currents of the phases, determining that the load is unbalanced when the maximum current, the minimum current, and the intermediate current are different, starting timing, and taking a timing result in the case of the load unbalance as the load unbalance duration.
5. The method of claim 3,
the preset alarm value is 60% of the preset unbalance degree recovery limit value.
6. The method of claim 1,
the obtaining of the adaptive commutation switch for each phase according to the current of each phase and the current of each commutation switch, performing commutation operation, and storing commutation information includes:
and calculating according to the current of each phase and the current of each phase change switch to obtain the basic current of each phase, performing phase change operation according to the basic current of each phase and the current of each phase change switch, and storing phase change information.
7. The method of claim 3,
the calculating according to the current of each phase and the current of each phase change switch to obtain the basic current of each phase, performing phase change operation according to the basic current of each phase and the current of each phase change switch, and storing phase change information includes:
calculating the total current of each phase according to the current of each phase, calculating the total current of each phase change switch according to the current of each phase change switch, and performing subtraction calculation on the total current of each phase and the total current of the corresponding phase change switch to obtain a calculation result as the basic current of each phase;
respectively sequencing the current of each phase change switch and the current of each phase according to a preset sequencing rule to obtain a current sequencing result of each phase change switch and a current sequencing result of each phase;
and according to the current sequencing result of each phase change switch and the current sequencing result of each phase, performing phase change according to a preset phase change method, and storing phase change information.
8. An intelligent pit filling mean value calculation device, comprising:
the acquisition module is used for acquiring the current of each phase in the three phases and the current of each phase change switch;
the calculating module is used for calculating the unbalance degree of the three-phase load according to the acquired current of each phase under the condition of reaching the maximum load current;
and the phase commutation module is used for acquiring the adaptive phase commutation switches for the phases according to the current of each phase and the current of each phase commutation switch under the condition that the phase commutation is required according to the unbalance degree, performing phase commutation operation and storing phase commutation information.
9. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor,
the processor, when executing the program, performs the steps of the method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program which, when executed, is capable of implementing the method according to claims 1-7.
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