CN116231674A - Method and system for controlling on-load voltage regulation based on transformer - Google Patents
Method and system for controlling on-load voltage regulation based on transformer Download PDFInfo
- Publication number
- CN116231674A CN116231674A CN202310041865.1A CN202310041865A CN116231674A CN 116231674 A CN116231674 A CN 116231674A CN 202310041865 A CN202310041865 A CN 202310041865A CN 116231674 A CN116231674 A CN 116231674A
- Authority
- CN
- China
- Prior art keywords
- transformer
- phase voltage
- voltage data
- effective value
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000033228 biological regulation Effects 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 18
- 210000001061 forehead Anatomy 0.000 claims description 18
- 238000005070 sampling Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 6
- 238000012913 prioritisation Methods 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 18
- 230000001105 regulatory effect Effects 0.000 description 9
- 238000005457 optimization Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
Abstract
The invention relates to the technical field of transformers, in particular to a method and a system for controlling on-load voltage regulation based on a transformer, wherein the method comprises the following steps: acquiring analog signals of three-phase voltage data of a transformer when the transformer works currently; processing an analog signal of three-phase voltage data when the transformer works currently to obtain a current three-phase voltage data value; judging whether on-load voltage regulation operation is needed or not based on operation parameters of the transformer; and controlling the transformer to perform on-load voltage regulation operation. According to the invention, by collecting the three-phase voltage data of the transformer during operation, calculating the voltage offset rate of the effective value of the three-phase voltage data under the current and simulated gear-up and gear-down conditions, and carrying out priority sorting on the voltage offset rate, the transformer is controlled to carry out on-load voltage regulation operation based on the priority sorting result, so that the on-load voltage regulation accurate control based on the transformer is realized, and the on-load voltage regulation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a method and a system for controlling on-load voltage regulation based on a transformer.
Background
At present, with the rapid development of science and technology in China, the electricity consumption is greatly increased, the large-scale development of a digital power grid is also indispensable for adapting to electricity consumption conditions, with the development of the digital power grid, the informatization, the automation and the intellectualization in the aspects of power generation and power transmission are basically realized in China, but a large development space still exists in the aspects of power distribution and power consumption.
When a high-power load is connected into a digital power grid in a large scale, and the voltage fluctuation of a power transmission line is large, the three-phase voltage at a load end is unbalanced, and potential safety hazards appear; however, short-time overvoltage conditions may also occur in the transmission line, for example: the direct lightning strike or the induction lightning strike can cause larger voltage fluctuation of the power transmission line, but the duration time of the voltage fluctuation is short, and the transformer does not need to carry out on-load voltage regulation operation. Therefore, how to realize accurate control when the voltage fluctuation occurs in the power transmission line becomes a great difficulty.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a method and a system for controlling on-load voltage regulation based on a transformer.
The invention provides a method for controlling on-load voltage regulation based on a transformer, which comprises the following steps:
acquiring analog signals of three-phase voltage data of a transformer when the transformer works currently;
processing an analog signal of three-phase voltage data when the transformer works currently to obtain a current three-phase voltage data value;
judging whether on-load voltage regulation operation is needed or not based on operation parameters of the transformer;
and controlling the transformer to perform on-load voltage regulation operation.
The step of processing the analog signal of the three-phase voltage data when the transformer works currently to obtain the current three-phase voltage data value comprises the following steps:
amplifying and filtering the analog signals of the three-phase voltage data when the transformer works currently to obtain the amplified and filtered analog signals of the three-phase voltage data when the transformer works currently;
and performing analog-to-digital conversion processing on the analog signals of the three-phase voltage data of the transformer subjected to the amplification and filtering processing during the current working to obtain digital signals of the current three-phase voltage data.
The step of judging whether on-load voltage regulation operation is needed based on the operation parameters of the transformer comprises the following steps:
setting operation parameters of a transformer, wherein the operation parameters comprise a voltage threshold value and a voltage threshold duration time of the transformer;
judging whether the current three-phase voltage data value is larger than the voltage threshold value or not;
judging whether the duration time of the current three-phase voltage data value larger than a voltage threshold value is larger than the voltage threshold duration time or not;
and judging that on-load voltage regulation operation is needed.
The control transformer performs on-load voltage regulation operation comprising:
the simulation transformer performs shift-up operation to obtain a three-phase voltage data value after simulated shift-down and a three-phase voltage data value after simulated shift-up;
converting the current three-phase voltage data value, the three-phase voltage data value after the simulated downshift and the three-phase voltage data value after the simulated upshift to obtain a current three-phase voltage data effective value, a three-phase voltage data effective value after the simulated downshift and a three-phase voltage data effective value after the simulated upshift respectively;
calculating the voltage offset rates of the current three-phase voltage data effective value, the three-phase voltage data effective value after simulating the downshift and the three-phase voltage data effective value after simulating the upshift;
and controlling on-load voltage regulation action based on the voltage offset rate.
The calculating the voltage offset rates of the current three-phase voltage data effective value, the three-phase voltage data effective value after the simulated downshift and the three-phase voltage data effective value after the simulated upshift comprises the following steps:
calculating the voltage offset rate D of the effective value of the current three-phase voltage data,
wherein U is the current three-phase voltage numberAccording to the effective value, U Forehead (forehead) Is the rated voltage of the transformer;
calculating the voltage offset rate D of the effective value of the three-phase voltage data after the analog downshift j ，
Wherein U is j To simulate the effective value of three-phase voltage data after the downshift, U Forehead (forehead) Is the rated voltage of the transformer;
calculating the voltage deviation rate D of the effective value of the three-phase voltage data after the analog upshift s ，
Wherein U is s To simulate the effective value of three-phase voltage data after the downshift, U Forehead (forehead) Is the rated voltage of the transformer.
The controlling on-load voltage regulation operation based on the voltage offset rate includes:
the voltage deviation rate D of the effective value of the current three-phase voltage data and the voltage deviation rate D of the effective value of the three-phase voltage data after the analog downshift are processed j Voltage deviation rate D of effective value of three-phase voltage data after analog upshift s And carrying out priority sorting, and carrying out on-load voltage regulation operation based on the priority sorting result.
The invention also provides a system for controlling on-load voltage regulation based on the transformer, which comprises:
the sampling module is used for collecting analog signals of three-phase voltage data when the transformer works currently;
the transmission module is used for transmitting the analog signals of the three-phase voltage data acquired by the sampling module to the processing module;
and the processing module is used for processing the analog signals of the three-phase voltage data and judging whether on-load voltage regulation operation is needed.
The processing module comprises:
the amplifying and filtering module is used for amplifying and filtering the analog signals of the current three-phase voltage data;
the analog-to-digital conversion module is used for converting the analog signals of the current three-phase voltage data after the amplification and filtering treatment into digital signals;
the analog shift-up module is used for simulating the shift-up operation of the transformer to obtain a three-phase voltage data value after analog shift-down and a three-phase voltage data value after analog shift-up;
the data processing module is used for calculating the voltage offset rates of the current three-phase voltage data effective value, the three-phase voltage data effective value after the simulated downshift and the three-phase voltage data effective value after the simulated upshift, and performing priority ranking to generate a priority ranking result.
The system also comprises an on-load voltage regulating module, wherein the on-load voltage regulating module is used for controlling the transformer to carry out on-load voltage regulating operation based on the priority ordering result.
The system also comprises a display module, wherein the display module is used for displaying the on-load voltage regulation result.
According to the invention, by collecting three-phase voltage data of the transformer when the transformer works currently and setting the voltage threshold value and the voltage threshold duration time of the transformer, whether on-load voltage regulation operation is needed or not is reasonably judged, and misoperation when certain conditions causing larger voltage fluctuation of the power transmission line occur but the on-load voltage regulation operation is not needed is avoided; the simulation transformer performs shift-up operation, calculates the voltage offset rate of the current three-phase voltage data effective value, the three-phase voltage data effective value after simulated shift-down and the three-phase voltage data effective value after simulated shift-up, performs priority sorting, and controls the transformer to perform on-load voltage regulation operation based on the priority sorting result, so that optimization of transformer working gear selection can be realized, accurate control of on-load voltage regulation based on the transformer is realized, and on-load voltage regulation efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a transformer-based system for controlling on-load regulation in an embodiment of the invention;
FIG. 2 is a flow chart of on-load voltage regulation based on transformer control in an embodiment of the invention;
FIG. 3 is a flow chart of processing an analog signal of three-phase voltage data when a transformer is currently operating in an embodiment of the invention;
FIG. 4 is a flowchart of determining whether the transformer requires on-load voltage regulation according to an embodiment of the present invention;
fig. 5 is a flowchart of an on-load voltage regulation operation based on a transformer in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, it should be understood that terms such as "comprises" or "comprising," etc., are intended to indicate the presence of features, numbers, steps, acts, components, portions, or combinations thereof disclosed in the present specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, acts, components, portions, or combinations thereof are present or added.
In addition, it should be noted that, without conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1, fig. 1 shows an architecture diagram of a system for controlling on-load voltage regulation based on a transformer in an embodiment of the present invention, which includes:
the sampling module is used for collecting analog signals of three-phase voltage data when the transformer works currently;
in an alternative implementation manner of the present embodiment, the sampling module collects analog signals of three-phase voltage data when the transformer is currently operated based on the voltage sensor.
In an alternative implementation of this embodiment, the sampling frequency of the voltage sensor is 50Hz.
The transmission module is used for transmitting the analog signals of the three-phase voltage data acquired by the sampling module to the processing module;
in an optional implementation manner of this embodiment, the transmission module includes a wired transmission module and a wireless transmission module, where the wired transmission module is configured to transmit, by using a wire, an analog signal of the three-phase voltage data acquired by the sampling module to the processing module, and the wireless transmission module is configured to transmit, by using a wireless transmission, an analog signal of the three-phase voltage data acquired by the sampling module to the processing module.
And the processing module is used for processing the analog signals of the three-phase voltage data and judging whether on-load voltage regulation operation is needed.
In an alternative implementation manner of this embodiment, the processing module includes:
the amplifying and filtering circuit is used for amplifying and filtering the analog signals of the current three-phase voltage data;
the analog-to-digital conversion circuit is used for converting the analog signals of the current three-phase voltage data after the amplification and filtering treatment into digital signals;
the analog circuit is used for simulating the transformer to perform shift-up operation to obtain a three-phase voltage data value after analog shift-down and a three-phase voltage data value after analog shift-up;
the data processing module is used for calculating the voltage offset rates of the current three-phase voltage data effective value, the three-phase voltage data effective value after the simulated downshift and the three-phase voltage data effective value after the simulated upshift, and performing priority ranking to generate a priority ranking result.
The system further comprises:
and the display module is used for displaying the on-load voltage regulation result.
And the on-load voltage regulating module is used for carrying out on-load voltage regulating operation based on the priority ordering result.
In summary, the embodiment of the invention sets the sampling module, the transmission module, the processing module, the on-load voltage regulating module and the display module through the system for controlling the on-load voltage regulating based on the transformer, reasonably judges whether on-load voltage regulating operation is needed or not through collecting three-phase voltage data of the transformer when the transformer works currently and setting the voltage threshold value and the voltage threshold duration time of the transformer, and avoids misoperation when certain conditions causing larger voltage fluctuation of the power transmission line are caused but the on-load voltage regulating operation is not needed; the simulation transformer performs shift-up operation, calculates the current three-phase voltage data effective value, the three-phase voltage data effective value after simulating shift-down and the voltage offset rate of the three-phase voltage data effective value after simulating shift-up, performs priority sorting, and performs on-load voltage regulation operation based on the priority sorting result, so that optimization of transformer working gear selection can be realized, accurate control of on-load voltage regulation based on the transformer is realized, and on-load voltage regulation efficiency is improved.
The method for controlling on-load voltage regulation based on the transformer comprises the following steps: acquiring three-phase voltage data of the transformer when working currently, and obtaining a current three-phase voltage data value; judging whether on-load voltage regulation operation is needed or not based on operation parameters of the transformer; and controlling the transformer to perform on-load voltage regulation operation.
In an alternative implementation manner of the present embodiment, as shown in fig. 2, fig. 2 shows a flowchart of controlling on-load voltage regulation based on a transformer in an embodiment of the present invention, including the following steps:
s201, acquiring analog signals of three-phase voltage data of a transformer when the transformer works currently;
the method comprises the steps of collecting analog signals of three-phase voltage data of a transformer when the transformer works currently based on the collecting module, and transmitting the analog signals of the three-phase voltage data of the transformer when the transformer works currently to the processing module based on the transmitting module.
In an alternative implementation manner of this embodiment, the sampling frequency of the analog signal for collecting the three-phase voltage data when the transformer is currently operated is 50Hz.
In an alternative implementation of this embodiment, the analog signal of the three-phase voltage data of the transformer when currently operating is transmitted to the processing module based on wired or wireless transmission.
S202, processing analog signals of three-phase voltage data when the transformer works currently to obtain current three-phase voltage data values;
in an alternative implementation manner of this embodiment, as shown in fig. 3, fig. 3 shows a flowchart of processing an analog signal of three-phase voltage data when the transformer is currently operated in the embodiment of the present invention, including the following steps:
s301, amplifying and filtering the analog signals of the three-phase voltage data when the transformer works currently to obtain the amplified and filtered analog signals of the three-phase voltage data when the transformer works currently;
the amplifying and filtering module based on the processing module amplifies and filters the analog signals of the three-phase voltage data when the transformer works currently, and obtains the analog signals of the three-phase voltage data when the transformer works currently after the amplifying and filtering.
S302, analog-to-digital conversion processing is carried out on the analog signals of the three-phase voltage data of the transformer after the amplification and filtering processing during the current working, and digital signals of the current three-phase voltage data are obtained.
The analog-to-digital conversion module based on the processing module performs analog-to-digital conversion processing on the analog signals of the three-phase voltage data of the transformer after the amplification and filtering processing during the current working process, so as to obtain digital signals of the current three-phase voltage data.
S203, judging whether on-load voltage regulation operation is needed or not based on the operation parameters of the transformer;
in an optional implementation manner of this embodiment, as shown in fig. 4, fig. 4 shows a flowchart for determining whether the transformer needs to perform an on-load voltage regulation operation in an embodiment of the present invention, including the following steps:
s401, setting operation parameters of a transformer;
in an alternative implementation of this embodiment, the operating parameters include a voltage threshold value and a voltage threshold duration of the transformer.
Specifically, the voltage threshold is a threshold of working voltage when the transformer performs on-load voltage regulation operation.
More, the voltage threshold duration is a critical value of time when the working voltage is greater than the rated voltage when the transformer performs on-load voltage regulation operation.
S402, judging whether the current three-phase voltage data value is larger than the voltage threshold value or not;
here, it is determined whether the current three-phase voltage data value is greater than the voltage threshold value, if it is determined that the current three-phase voltage data value is greater than the voltage threshold value, step S403 is performed, and if it is determined that the current three-phase voltage data value is not greater than the voltage threshold value, step S405 is performed.
S403, judging whether the duration time of the current three-phase voltage data value larger than a voltage threshold value is larger than the voltage threshold duration time;
here, it is determined whether the duration of the current three-phase voltage data value being greater than the voltage threshold value is greater than the voltage threshold duration, if it is determined that the duration of the current three-phase voltage data value being greater than the voltage threshold value is greater than the voltage threshold duration, step S404 is entered, and if it is determined that the duration of the current three-phase voltage data value being greater than the voltage threshold value is not greater than the voltage threshold duration, step S405 is entered.
S404, judging that on-load voltage regulation operation is needed;
in an optional implementation manner of this embodiment, if it is determined that the current three-phase voltage data value is greater than the voltage threshold value and that the duration of the current three-phase voltage data value that is greater than the voltage threshold value is greater than the voltage threshold duration, it is determined that the transformer needs to perform an on-load voltage regulation operation.
S405, judging that on-load voltage regulation operation is not needed.
In an optional implementation manner of this embodiment, if it is determined that the current three-phase voltage data value is not greater than the voltage threshold value, or if it is determined that the current three-phase voltage data value is greater than the voltage threshold value, but if it is determined that the duration of time that the current three-phase voltage data value is greater than the voltage threshold value is not greater than the voltage threshold duration, it is determined that the transformer does not need to perform on-load voltage regulation operation, and no operation is required.
S204, controlling the transformer to perform on-load voltage regulation operation.
In an optional implementation manner of this embodiment, as shown in fig. 5, fig. 5 shows a flowchart of an on-load voltage regulation operation based on a transformer in an embodiment of the present invention, including the following steps:
s501, performing shift-up operation by using the simulation transformer to obtain a three-phase voltage data value after simulating shift-down and a three-phase voltage data value after simulating shift-up;
the analog upshift module based on the processing module simulates the transformer to perform upshift operation, and obtains the three-phase voltage data value after the analog downshift and the three-phase voltage data value after the analog upshift.
S502, converting the current three-phase voltage data value, the three-phase voltage data value after the simulated downshift and the three-phase voltage data value after the simulated upshift to obtain a current three-phase voltage data effective value, a three-phase voltage data effective value after the simulated downshift and a three-phase voltage data effective value after the simulated upshift respectively;
in an optional implementation manner of this embodiment, the current three-phase voltage data effective value, the three-phase voltage data effective value after the analog downshift, and the three-phase voltage data effective value after the analog upshift include a phase voltage effective value and a line voltage effective value, where the line voltage effective value is ∈3 times the phase voltage effective value.
S503, calculating the voltage offset rates of the current three-phase voltage data effective value, the three-phase voltage data effective value after the simulated downshift and the three-phase voltage data effective value after the simulated upshift;
in an alternative implementation of this embodiment, the voltage offset rate D of the current three-phase voltage data effective value is calculated,
wherein U is the effective value of the current three-phase voltage data, U Forehead (forehead) Is the rated voltage of the transformer.
In an alternative implementation of this embodiment, the voltage offset rate D of the effective value of the three-phase voltage data after the analog downshift is calculated j ，
Wherein U is j To simulate the effective value of three-phase voltage data after the downshift, U Forehead (forehead) Is the rated voltage of the transformer.
In an alternative implementation of this embodiment, the voltage offset D of the effective value of the three-phase voltage data after the analog upshift is calculated s ，
Wherein U is s To simulate the effective value of three-phase voltage data after the downshift, U Forehead (forehead) Is the rated voltage of the transformer.
Steps S504-S507 represent controlling the on-load voltage regulation based on the voltage offset ratio, and comparing the voltage offset ratio D of the current three-phase voltage data effective value with the voltage offset ratio D of the three-phase voltage data effective value after the analog downshift j Voltage deviation rate D of effective value of three-phase voltage data after analog upshift s And carrying out priority sorting, and controlling on-load voltage regulation operation based on the priority sorting result.
Specifically, the voltage deviation rate D of the effective value of the current three-phase voltage data and the voltage deviation rate D of the effective value of the three-phase voltage data after the analog downshift are calculated j Voltage deviation rate D of effective value of three-phase voltage data after analog upshift s Sorting according to the order of magnitude, selecting a minimum value, and if the voltage deviation rate D of the effective value of the current three-phase voltage data is the minimum value, not performing the gear lifting operation; voltage deviation rate D of effective value of three-phase voltage data after analog downshift j If the value is the minimum value, performing a downshift operation; if the voltage deviation rate D of the effective value of the three-phase voltage data after the analog upshift s At the minimum, an upshift operation is performed.
S504, judging the voltage deviation rate D of the effective value of the current three-phase voltage data and the voltage deviation rate D of the effective value of the three-phase voltage data after the analog downshift j Voltage deviation rate D of effective value of three-phase voltage data after analog upshift s Is the minimum value of (a);
in an optional implementation manner of this embodiment, if it is determined that the voltage offset rate D of the effective value of the current three-phase voltage data is the minimum value, step S505 is performed; if the voltage deviation rate D of the effective value of the three-phase voltage data after the simulated downshift is judged j If the value is the minimum value, the process proceeds to step S506; if the voltage deviation rate D of the effective value of the three-phase voltage data after the analog upshift is judged s At the minimum value, the process advances to step S507.
S505, not performing up-down gear operation;
in an optional implementation manner of this embodiment, if it is determined that the voltage offset rate D of the effective value of the current three-phase voltage data is the minimum value, the upshift operation is not performed.
S506, performing a downshift operation;
in an alternative implementation of the present embodiment, if the voltage deviation rate D of the effective value of the three-phase voltage data after the simulated downshift is determined j At the minimum, a downshift operation is performed.
S507, performing an upshift operation.
In an alternative implementation of the present embodiment, if the number of three-phase voltages after the simulated upshift is determinedVoltage offset rate D according to effective value s At the minimum, an upshift operation is performed.
In summary, the embodiment of the invention reasonably judges whether the on-load voltage regulation operation is needed or not by acquiring three-phase voltage data of the transformer when the transformer works currently and setting the voltage threshold value and the voltage threshold duration time of the transformer, and avoids misoperation when certain conditions causing larger voltage fluctuation of the power transmission line but not needing the on-load voltage regulation operation occur; the simulation transformer performs shift-up operation, calculates the current three-phase voltage data effective value, the three-phase voltage data effective value after simulating shift-down and the voltage offset rate of the three-phase voltage data effective value after simulating shift-up, performs priority sorting, and performs on-load voltage regulation operation based on the priority sorting result, so that optimization of transformer working gear selection can be realized, accurate control of on-load voltage regulation based on the transformer is realized, and on-load voltage regulation efficiency is improved.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program to instruct related hardware, the program may be stored in a computer readable storage medium, and the storage medium may include: read Only Memory (ROM), random access memory (RAM, random Access Memory), magnetic or optical disk, and the like.
In addition, the foregoing has described in detail embodiments of the present invention, the principles and embodiments of the present invention have been described herein with reference to specific examples, the foregoing examples being provided to facilitate the understanding of the method of the present invention and the core idea thereof; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. A method for controlling on-load voltage regulation based on a transformer, comprising:
acquiring analog signals of three-phase voltage data of a transformer when the transformer works currently;
processing an analog signal of three-phase voltage data when the transformer works currently to obtain a current three-phase voltage data value;
judging whether on-load voltage regulation operation is needed or not based on operation parameters of the transformer;
and controlling the transformer to perform on-load voltage regulation operation.
2. The method for controlling on-load voltage regulation based on a transformer according to claim 1, wherein the processing the analog signal of the three-phase voltage data of the transformer when the transformer is currently operated to obtain the current three-phase voltage data value comprises:
amplifying and filtering the analog signals of the three-phase voltage data when the transformer works currently to obtain the amplified and filtered analog signals of the three-phase voltage data when the transformer works currently;
and performing analog-to-digital conversion processing on the analog signals of the three-phase voltage data of the transformer subjected to the amplification and filtering processing during the current working to obtain digital signals of the current three-phase voltage data.
3. The method for controlling on-load voltage regulation based on a transformer of claim 1, wherein the determining whether on-load voltage regulation is required based on the operating parameters of the transformer comprises:
setting operation parameters of a transformer, wherein the operation parameters comprise a voltage threshold value and a voltage threshold duration time of the transformer;
judging whether the current three-phase voltage data value is larger than the voltage threshold value or not;
judging whether the duration time of the current three-phase voltage data value larger than a voltage threshold value is larger than the voltage threshold duration time or not;
and judging that on-load voltage regulation operation is needed.
4. The method for controlling on-load voltage regulation based on a transformer of claim 1, wherein the controlling the transformer to perform the on-load voltage regulation operation comprises:
the simulation transformer performs shift-up operation to obtain a three-phase voltage data value after simulated shift-down and a three-phase voltage data value after simulated shift-up;
converting the current three-phase voltage data value, the three-phase voltage data value after the simulated downshift and the three-phase voltage data value after the simulated upshift to obtain a current three-phase voltage data effective value, a three-phase voltage data effective value after the simulated downshift and a three-phase voltage data effective value after the simulated upshift respectively;
calculating the voltage offset rates of the current three-phase voltage data effective value, the three-phase voltage data effective value after simulating the downshift and the three-phase voltage data effective value after simulating the upshift;
and controlling on-load voltage regulation action based on the voltage offset rate.
5. The method for controlling on-load voltage regulation based on a transformer according to claim 4, wherein calculating the voltage offset rates of each of the current three-phase voltage data effective value, the three-phase voltage data effective value after the simulated downshift, and the three-phase voltage data effective value after the simulated upshift comprises:
calculating the voltage offset rate D of the effective value of the current three-phase voltage data,
wherein U is the effective value of the current three-phase voltage data, U Forehead (forehead) Is the rated voltage of the transformer;
calculating the voltage offset rate D of the effective value of the three-phase voltage data after the analog downshift j ，
Wherein U is j To simulate the effective value of three-phase voltage data after the downshift, U Forehead (forehead) Is the rated voltage of the transformer; />
Calculating the voltage deviation rate D of the effective value of the three-phase voltage data after the analog upshift s ，
Wherein U is s To simulate the effective value of three-phase voltage data after the downshift, U Forehead (forehead) Is the rated voltage of the transformer.
6. The method of on-load voltage regulation based on a transformer of claim 5, wherein the controlling on-load voltage regulation based on the voltage offset rate comprises:
the voltage deviation rate D of the effective value of the current three-phase voltage data and the voltage deviation rate D of the effective value of the three-phase voltage data after the analog downshift are processed j Voltage deviation rate D of effective value of three-phase voltage data after analog upshift s And carrying out priority sorting, and controlling on-load voltage regulation operation based on the priority sorting result.
7. A system for controlling on-load voltage regulation based on a transformer, comprising:
the sampling module is used for collecting analog signals of three-phase voltage data when the transformer works currently;
the transmission module is used for transmitting the analog signals of the three-phase voltage data acquired by the sampling module to the processing module;
and the processing module is used for processing the analog signals of the three-phase voltage data and judging whether on-load voltage regulation operation is needed.
8. The transformer-based controlled on-load voltage regulation system of claim 7, wherein the processing module comprises:
the amplifying and filtering module is used for amplifying and filtering the analog signals of the current three-phase voltage data;
the analog-to-digital conversion module is used for converting the analog signals of the current three-phase voltage data after the amplification and filtering treatment into digital signals;
the analog shift-up module is used for simulating the shift-up operation of the transformer to obtain a three-phase voltage data value after analog shift-down and a three-phase voltage data value after analog shift-up;
the data processing module is used for calculating the voltage offset rates of the current three-phase voltage data effective value, the three-phase voltage data effective value after the simulated downshift and the three-phase voltage data effective value after the simulated upshift, and performing priority ranking to generate a priority ranking result.
9. The transformer-based system for controlling on-load voltage regulation of claim 7, further comprising an on-load voltage regulation control module for controlling the transformer to perform on-load voltage regulation operations based on a prioritization result.
10. The transformer-based controlled on-load voltage regulation system of claim 7, further comprising a display module for displaying on-load voltage regulation results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310041865.1A CN116231674B (en) | 2023-01-13 | 2023-01-13 | Method and system for controlling on-load voltage regulation based on transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310041865.1A CN116231674B (en) | 2023-01-13 | 2023-01-13 | Method and system for controlling on-load voltage regulation based on transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116231674A true CN116231674A (en) | 2023-06-06 |
| CN116231674B CN116231674B (en) | 2024-03-29 |
Family
ID=86570806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310041865.1A Active CN116231674B (en) | 2023-01-13 | 2023-01-13 | Method and system for controlling on-load voltage regulation based on transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116231674B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038558A (en) * | 2018-08-02 | 2018-12-18 | 清华大学 | Simulate the power distribution network planning scheme security assessment method of optimum control process |
| CN111628505A (en) * | 2020-06-15 | 2020-09-04 | 国网安徽省电力有限公司滁州供电公司 | Transformer on-load automatic voltage regulation device and method based on electricity consumption information acquisition system |
| CN114172035A (en) * | 2021-12-08 | 2022-03-11 | 安徽广远智能电力装备制造有限公司 | Intelligent automatic voltage-boosting transformer without power failure of high-voltage line and control method thereof |
-
2023
- 2023-01-13 CN CN202310041865.1A patent/CN116231674B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038558A (en) * | 2018-08-02 | 2018-12-18 | 清华大学 | Simulate the power distribution network planning scheme security assessment method of optimum control process |
| CN111628505A (en) * | 2020-06-15 | 2020-09-04 | 国网安徽省电力有限公司滁州供电公司 | Transformer on-load automatic voltage regulation device and method based on electricity consumption information acquisition system |
| CN114172035A (en) * | 2021-12-08 | 2022-03-11 | 安徽广远智能电力装备制造有限公司 | Intelligent automatic voltage-boosting transformer without power failure of high-voltage line and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116231674B (en) | 2024-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11508487B2 (en) | Full-digital rod position measurement devices and methods thereof | |
| JP6172615B2 (en) | Method and system for identifying element parameter and power correction coefficient in power system | |
| CN116345701B (en) | Low-voltage reactive compensation intelligent monitoring control system | |
| CN104793101B (en) | A kind of transient state travelling wave Small Electric Current Earthing And Routing Device | |
| CN114386632A (en) | Power distribution operation and maintenance system based on electric power big data | |
| CN116231674B (en) | Method and system for controlling on-load voltage regulation based on transformer | |
| CN109659934B (en) | New energy grid-connected planning optimization method based on short-circuit current margin | |
| CN113341218B (en) | Direct current electric energy meter with self-adaptive regulation of measuring range and control method thereof | |
| CN108873786B (en) | Data acquisition system based on digital quantity conditioning | |
| WO2019120625A1 (en) | Control system for voltage regulation device | |
| CN107895078A (en) | Macro model construction method of the strong electromagnetic pulse to long electric power transmission line coupling response | |
| US20020169580A1 (en) | Aging measuring device | |
| CN109975625B (en) | Test method and device for researching key factors of short-circuit radial instability of power transformer | |
| CN112487624A (en) | Power transformer low-voltage winding short-circuit resistance safety evaluation method based on instability theory | |
| CN111813093B (en) | Detection system of distribution station voltage coordination controller | |
| CN114421439B (en) | Power grid protection fixed value data changing method based on visualization and expert system | |
| CN116404653B (en) | Method and system for on-load voltage regulation of transformer | |
| JP2928778B1 (en) | Power system PQ correlation curve grouping method | |
| CN115792725B (en) | On-line protection linkage control method and device for distribution transformer | |
| CN107799285A (en) | A kind of remote-operated 10kv Intelligent distribution transformers and its method of work | |
| CN117411010B (en) | Three-phase transformer control method | |
| CN116191446B (en) | On-load voltage regulation integrated system based on active regulation and control method | |
| EP4206694A1 (en) | Signal merging unit with a settable time constant | |
| CN117118087B (en) | Power equipment monitoring and early warning system and method | |
| CN112557788B (en) | Parallel active power filter performance detection method considering power grid strength |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |