CN117368588A - Method, device, equipment and storage medium for determining consistency of voltage phase sequence - Google Patents
Method, device, equipment and storage medium for determining consistency of voltage phase sequence Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a storage medium for determining voltage phase sequence consistency. The method comprises the following steps: acquiring voltage data of all users on a target feeder line, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence; determining a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user; and determining phase sequence consistency results of all users on the target feeder line according to the voltage correlation coefficient between each phase sequence of every two users. By the technical scheme, whether the phase sequences of the users are consistent or not can be judged by utilizing the voltage correlation coefficient corresponding to the voltage three-phase sequence among the users, and the low-cost and full-coverage investigation of the phenomenon of irregular metering phase sequences and errors is realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of power, in particular to a method, a device, equipment and a storage medium for determining voltage phase sequence consistency.
Background
The voltage of the high supply user is determined by the output voltage of the power plant and the line voltage drop, and the line voltage drop is determined by the load distribution on the premise of unchanged physical property and topology of the power grid. The user load current changes to cause the current change of the upper node or the line, thereby causing the voltage drop change of the line and finally causing the voltage change of the user and the surrounding users. The load current, i.e. the load distribution, of all users determines the voltage values, i.e. the voltage distribution, of all users. It can be seen that the voltage sequences between the high-power users are not independent due to the mutual influence, but have a certain correlation degree. In general, the closer the topology distance is, the higher the voltage correlation is, from which the voltage correlation can be used to analyze the power grid topology relationship (i.e., the line-change relationship, the dependence relationship between the high-power user and the feeder line).
According to a similar principle, when a three-phase imbalance phenomenon exists under a feeder line, the correlation degree of in-phase voltage sequences among different users is higher, and the correlation degree of different in-phase voltage sequences is lower. The more serious the imbalance phenomenon, the greater the difference between the two, and when the imbalance reaches a certain degree, the property is that only the correlation degree of the in-phase voltage sequence is higher than a certain threshold value. Accordingly, based on the known topological relation, the measured phase sequence consistency among the users can be further analyzed by utilizing the voltage sequences of the phases of the users, namely whether the users meet the requirement of 'wiring according to positive phase sequence' specified in the typical design.
The high-power user metering wiring does not follow the fact that the three-phase electric energy meter should be wired according to the positive phase sequence, and the metering wiring is not standard (metering is not affected) and can be wrong (metering is affected). For various reasons, such irregularities and errors are difficult to completely eradicate. Because of the large number of users and wide distribution, the labor cost for one-to-one investigation of the irregular and error phenomenon is too high to be implemented.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a storage medium for determining the consistency of a voltage phase sequence, which can judge whether the phase sequence of a user is consistent or not by utilizing a voltage correlation coefficient corresponding to a voltage three-phase sequence among users, and realize low-cost and full-coverage metering phase sequence non-standardization and error phenomenon investigation.
According to an aspect of the present invention, there is provided a voltage phase sequence consistency determination method, including:
acquiring voltage data of all users on a target feeder line, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence;
determining a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user;
and determining phase sequence consistency results of all users on the target feeder line according to the voltage correlation coefficient between each phase sequence of every two users.
According to another aspect of the present invention, there is provided a voltage phase sequence consistency determination apparatus, the apparatus comprising:
the acquisition module is used for acquiring voltage data of all users on the target feeder line, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence;
the first determining module is used for determining a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user;
and the second determining module is used for determining phase sequence consistency results of all users on the target feeder line according to the voltage correlation coefficient between each phase sequence of every two users.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of determining phase sequence consistency according to any of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the method for determining phase sequence consistency of voltage according to any of the embodiments of the present invention when executed.
According to the embodiment of the invention, the voltage data of all users on the target feeder are obtained, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence, the voltage correlation coefficient between each phase sequence of every two users is determined according to the voltage data of each user, and the phase sequence consistency result of all users on the target feeder is determined according to the voltage correlation coefficient between each phase sequence of every two users. By the technical scheme, whether the phase sequences of the users are consistent or not can be judged by utilizing the voltage correlation coefficient corresponding to the voltage three-phase sequence among the users, and the low-cost and full-coverage investigation of the phenomenon of irregular metering phase sequences and errors is realized.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method of determining consistency of voltage phase sequence in an embodiment of the invention;
FIG. 2 is a schematic diagram of a voltage phase sequence consistency determination device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device implementing a method for determining consistency of voltage phase sequence according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a voltage phase sequence consistency determination method according to an embodiment of the present invention, where the embodiment is applicable to a case of voltage phase sequence consistency determination, the method may be performed by a voltage phase sequence consistency determination device according to an embodiment of the present invention, and the device may be implemented in a software and/or hardware manner, as shown in fig. 1, and the method specifically includes the following steps:
s101, acquiring voltage data of all users on a target feeder line.
In this embodiment, the target feeder may be a feeder that transmits voltage signals between users, and the voltage data may be voltage data when each user on the feeder uses electricity.
In this embodiment, each voltage data may include 3 columns of data, i.e., A, B, C three-phase sequence. In other words, each voltage data may include three phase sequences: the first phase sequence is the a phase, the second phase sequence is the B phase and the third phase sequence is the C phase.
Specifically, a total of n users on a feeder line are provided for inclusion analysis, and the n users are ranked in a certain way, for example, the n users may be respectively numbered 1,2, … and n after being ranked according to the asset number of the meter. g epsilon {1,2,3}, S i,g The g-th column voltage data for user i is represented.
In the actual operation process, 15 minutes of voltage data for a user is stored in the metering automation system, and the embodiment of the invention can analyze the consistency of the metering phase sequence of the user by utilizing the voltage data of a longer period (more than 10 days), thereby realizing a metering phase sequence non-standardization/error phenomenon checking scheme with low cost and full coverage.
In the actual operation, if S i,g ,S j,h One of (the g-th column voltage data of the user i and the h-th column voltage data of the user j, h epsilon {1,2,3}, i not equal to j) is a constant sequence (second sequence of the high-order user) or the voltage correlation coefficient between the two users cannot be calculated due to excessive data errors or missing, and is called S i,g ,S j,h The voltage correlation coefficient between them is invalid and the invalid result is not included in the subsequent analysis.
S102, determining a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user.
In the present embodiment, the user S i,g ,S j,h The voltage correlation coefficient between (g-th column voltage data of user i and h-th column voltage data of user j, h ε {1,2,3}, i+.j) can be expressed as corr (S) i,g ,S j,h )。
Specifically, a voltage correlation coefficient between each phase sequence of every two users is calculated.
S103, determining phase sequence consistency results of all users on the target feeder line according to the voltage correlation coefficient between each phase sequence of every two users.
It should be noted that the phase sequence consistency result may be a result of whether the phase sequence of the voltage data of the user on the feeder is consistent. By way of example, the phase sequence consistency result may include, for example: the phase sequence of all users on the target feeder is consistent, the phase sequence of the users on the target feeder is inconsistent with that of most other users, and the like.
Specifically, whether the phase sequences of all users on the target feeder line are consistent is determined according to the voltage correlation coefficient between each phase sequence of every two users.
According to the embodiment of the invention, the voltage data of all users on the target feeder are obtained, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence, the voltage correlation coefficient between each phase sequence of every two users is determined according to the voltage data of each user, and the phase sequence consistency result of all users on the target feeder is determined according to the voltage correlation coefficient between each phase sequence of every two users. By the technical scheme, whether the phase sequences of the users are consistent or not can be judged by utilizing the voltage correlation coefficient corresponding to the voltage three-phase sequence among the users, and the low-cost and full-coverage investigation of the phenomenon of irregular metering phase sequences and errors is realized.
Optionally, determining the phase sequence consistency result of all users on the target feeder according to the voltage correlation coefficient between each phase sequence of every two users includes:
and determining a target two-dimensional matrix according to the voltage correlation coefficient between each phase sequence of every two users.
It should be explained that the target two-dimensional matrix may be a two-dimensional matrix composed of voltage correlation coefficients between each phase sequence of every two users. The target two-dimensional matrix may be, for example, an n x n matrix i, j.
Wherein each element in the target two-dimensional matrix represents a voltage correlation coefficient between each phase sequence of each two users.
A first parameter is determined from the target two-dimensional matrix.
The first parameter is the largest voltage correlation coefficient among the voltage correlation coefficients between each phase sequence of every two users.
Specifically, in the actual operation process, forh∈{1,2,3},/>j∈{1,2,…,n},j>i, calculating xMax [ i, j ]]＝max{corr(S i,g ,S j,h ) And obtaining the first parameter.
And if the first parameter is greater than or equal to a first preset threshold value, determining that a strong correlation of the voltage data exists between the two users.
The first preset threshold may be a threshold preset by a user according to an actual situation, and in this embodiment, the first preset threshold may be expressed as pcorrstong.
Specifically, if xMax [ i, j ]. Gtoreq.pCorrStrong, it is said that user i and user j are strongly correlated (otherwise, it is said that the correlation is weakly correlated).
Optionally, the method further comprises:
and determining a second parameter according to the target two-dimensional matrix.
The second parameter is the smallest voltage correlation coefficient among the voltage correlation coefficients between each phase sequence of every two users.
Specifically, in the actual operation process, forh∈{1,2,3},/>j∈{1,2,…,n},j>i, calculating xMin [ i, j]＝min{corr(S i,g ,S j,h ) And obtaining a second parameter.
And if the difference value between the first parameter and the second parameter is larger than or equal to a second preset threshold value, acquiring a phase sequence arrangement set corresponding to the first phase sequence, the second phase sequence and the third phase sequence of the voltage data of each user.
The second preset threshold may be a threshold preset by the user according to an actual situation, and in this embodiment, the second preset threshold may be expressed as pCorrDelta.
In this embodiment, the phase sequence arrangement set may be a set formed by 6 arrangement sequences formed by arranging and combining three phases included in the voltage data of each user, where the 6 arrangement sequences may be respectively recorded as: (P) 1 ＝123,P 2 ＝231,P 3 ＝312,P 4 ＝321,P 5 ＝132,P 6 =213), wherein 1,2,3 represent a first phase sequence, a second phase sequence, and a third phase sequence, respectively.
Specifically, if xMax [ i, j ]. Gtoreq.xMin [ i, j ] +pCorrDelta, it is considered that both user i and user j can judge the metering phase consistency according to the voltage correlation coefficient. Firstly, a phase sequence arrangement set corresponding to a first phase sequence, a second phase sequence and a third phase sequence of voltage data of each user is obtained.
In the actual operation process, xMax [ i, j ]]＝max{corr(S i,g ,S j,h ) Sum xMin [ i, j ]]＝min{corr(S i,g ,S j,h ) Used for judging whether the voltage sequence correlation degree of two users is strong enough and the in-phase correlation degree and the out-of-phase correlation degree are different enough, and xAvg [ i, j can be used]＝avg{corr(S i,g ,S j,h ) Either } or xSecond [ i, j]＝max{{corr(S i,g ,S j,h )}-{xMax[i,j]}, etc. instead of xMin [ i, j ]]The present embodiment is not limited as long as the judgment purpose can be achieved.
And determining the average value of the voltage correlation coefficient between each phase sequence of each two users according to the phase sequence arrangement set of each user.
The average value of the voltage correlation coefficients between each phase sequence of every two users is the average value of all the voltage correlation coefficients between the first user and the second user when the first user is arranged in the first phase sequence and the second user is arranged in all the phase sequences in the phase sequence arrangement set.
The first user is any user on the target feed line, which can be represented as user i, and the second user is any user on the target feed line except the first user, which can be represented as user j.
Specifically, defineRepresenting voltage data of user i as P 1 Arrange voltage data of user j to P t When arranged, the average value of the voltage correlation coefficients of the two is equal to m, wherein t is {1,2,3,4,5,6}.
In the course of the actual operation of the device,for determining the phase sequence of the user j relative to the user i, other definitions may be used, as long as it can determine under which phase sequence the correlation between the user j and the user i is the largest, which is not limited in this embodiment.
And determining the phase sequence consistency result of all users on the target feeder line according to the average value of the voltage correlation coefficient between each phase sequence of every two users.
Optionally, determining the phase sequence consistency result of all users on the target feeder according to the average value of the voltage correlation coefficient between each phase sequence of every two users includes:
and determining a target three-dimensional matrix according to the phase sequence arrangement set of each user and the average value of the voltage correlation coefficient between each phase sequence of each two users.
It should be explained that the target three-dimensional matrix may be a three-dimensional matrix composed of an average value of the voltage correlation coefficients between each phase sequence of each two users. The target three-dimensional matrix may be, for example, a 6×n×n three-dimensional matrix xCorrAvg, xCorrAvg [ i, j, t ] =corravg (i, j, t).
And determining phase sequence consistency results of all users on the target feeder line according to the target three-dimensional matrix.
Optionally, determining the phase sequence consistency result of all users on the target feeder line according to the target three-dimensional matrix includes:
and determining the average value of the corresponding voltage correlation coefficients between the first user and the second user and the average value of the corresponding voltage correlation coefficients between the second user and the third user according to the target three-dimensional matrix.
The third user is any user except the first user and the second user on the target feed line, and can be expressed as user k.
Specifically, an average value of the voltage correlation coefficients corresponding to the first user and the second user and an average value of the voltage correlation coefficients corresponding to the second user and the third user may be obtained from the target three-dimensional matrix.
And determining the corresponding metering phase sequence between the first user and the second user according to the average value of the corresponding voltage correlation coefficient between the first user and the second user.
And determining the corresponding metering phase sequence between the second user and the third user according to the average value of the corresponding voltage correlation coefficients between the second user and the third user.
And determining the corresponding metering phase sequence between the first user and the third user according to the corresponding metering phase sequence between the first user and the second user and the corresponding metering phase sequence between the second user and the third user.
Specifically, set xCorravg [ i, j, t]＝max{xCorrAvg[i,j]And xCorravg [ j, k, t ]']＝max{xCorrAvg[j,k]Then consider user j to be P with respect to user i t User k has a phase sequence P with respect to user j t′ At this time, for P t Ordered in ascending order and let P t′ Then sequencing to obtain P t″ ，P t″ I.e. the phase sequence of user k relative to user i, in this embodiment t "=p (t, t').
And determining phase sequence consistency results of all users on the target feeder line according to the corresponding metering phase sequences between the first user and the third user.
Optionally, determining the phase sequence consistency result of all users on the target feeder according to the corresponding metering phase sequence between the first user and the third user includes:
and taking other users except the first user, the second user and the third user on the target feed line as new third users, and returning to execute the operation of determining the average value of the corresponding voltage correlation coefficients between the first user and the second user and the average value of the corresponding voltage correlation coefficients between the second user and the third user according to the target three-dimensional matrix until all the users on the target feed line determine the phase sequence consistency result.
Optionally, determining the phase sequence consistency result by all users on the target feeder line includes: if the metering phase sequences of all third users and the first users on the target feeder line are consistent, determining that the voltage phase sequence consistency results of all users on the target feeder line are consistent.
In the actual operation process, an n×n matrix y may be defined for storing the calculation result of the target three-dimensional matrix, where y [ i, j ] records max { xCorrAvg [ i, j, t ] |t=1, 2, …,6}, j > i, and y [ j, i ] records the corresponding t. The diagonal elements y i, i record the packet numbers. n users may be divided into a plurality of groups, and any users among different groups are weakly related, so that phase sequence consistency of the n users cannot be judged; any two users i and j within the same group are either strongly correlated or indirectly strongly correlated (i.e., there are several users forming a sequence of users with i and j, any adjacent users in the sequence being strongly correlated).
The Group may be represented by a Group and the matrix y calculated as follows: step one: matrix y is initialized to a zero matrix. Step two: finding a first user i, so that the corresponding user j exists in the first user i, and the first user i and the second user j meet phase sequence consistency judging conditions; a) New Group 1 And assign i to Group 1 Let y [ i, i ]]=1, where 1 is a packet number, representing Group 1 The method comprises the steps of carrying out a first treatment on the surface of the b) Traversing j+.i, let y [ j, j ] if i and j satisfy the aforementioned properties]=1, at y [ i, j]And y [ j, i ]]Respectively recording max { xCorravg [ i, j, t ]]T=1, 2, …,6} and the corresponding t; c) Traversal j epsilonGroup 1 TraversingLet y [ k, k if j and k satisfy the aforementioned properties]=1, if k>j is y [ j, k ]]And y [ k, j ]](otherwise at y [ k, j ]]And y [ j, k ]]) Respectively recording max { xCorravg [ j, k, t ]]T=1, 2, …,6} and the corresponding t "=p (y [ j, i]T). Step three: step two, all or part of users are classified into groups 1 And determining the phase sequence of all users in the group relative to i by taking the user i as a standard, and if the rest users exist, repeating the step two for the rest users until no rest users or only isolated users exist.
After the matrix y calculation is completed, most of the n users are assigned to the n groups of groups, all of the users in each group determining the metric phase sequence relative to a fixed user within the group. In general, if the first and second preset thresholds pcorrstong and pcordelta take appropriate values, nmroup will be small and some primary grouping exists, including most users.
The embodiment of the invention designs a secondary wiring phase sequence analysis method for high-power user metering based on voltage data, and the phase sequence error of a down conductor also appears as irregular or wrong metering phase sequence on the data.
Example two
Fig. 2 is a schematic structural diagram of a voltage phase sequence consistency determining device in an embodiment of the invention. The embodiment may be applied to the case of determining the phase sequence of the voltage, and the device may be implemented in a software and/or hardware manner, and may be integrated in any device that provides the function of determining the phase sequence of the voltage, as shown in fig. 2, where the device specifically includes: an acquisition module 201, a first determination module 202 and a second determination module 203.
The acquiring module 201 is configured to acquire voltage data of all users on a target feeder, where each voltage data includes a first phase sequence, a second phase sequence, and a third phase sequence;
a first determining module 202, configured to determine a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user;
a second determining module 203, configured to determine phase sequence consistency results of all users on the target feeder according to a voltage correlation coefficient between each phase sequence of every two users.
Optionally, the second determining module 203 includes:
a first determining submodule, configured to determine a target two-dimensional matrix according to a voltage correlation coefficient between each phase sequence of each two users, where each element in the target two-dimensional matrix represents the voltage correlation coefficient between each phase sequence of each two users;
the second determining submodule is used for determining a first parameter according to the target two-dimensional matrix, wherein the first parameter is the largest voltage correlation coefficient in the voltage correlation coefficients between each two user phases;
and the third determining submodule is used for determining that a strong correlation of the voltage data exists between the two users if the first parameter is larger than or equal to a first preset threshold value.
Optionally, the method further comprises:
a fourth determining submodule, configured to determine a second parameter according to the target two-dimensional matrix, where the second parameter is a minimum voltage correlation coefficient among voltage correlation coefficients between each phase sequence of every two users;
the acquisition sub-module is used for acquiring a phase sequence arrangement set corresponding to a first phase sequence, a second phase sequence and a third phase sequence of the voltage data of each user if the difference value between the first parameter and the second parameter is larger than or equal to a second preset threshold value;
a fifth determining submodule, configured to determine an average value of voltage correlation coefficients between each phase sequence of each two users according to a phase sequence arrangement set of each user, where the average value of voltage correlation coefficients between each phase sequence of each two users is an average value of all voltage correlation coefficients between a first user and a second user when the first user is arranged with a first phase sequence and the second user is arranged with all phases sequences in the phase sequence arrangement set, where the first user is any user on a target feed line, and the second user is any user on the target feed line except the first user;
and a sixth determining submodule, configured to determine phase sequence consistency results of all users on the target feeder line according to an average value of voltage correlation coefficients between each phase sequence of every two users.
Optionally, the sixth determining submodule includes:
a first determining unit for determining a target three-dimensional matrix according to the phase sequence arrangement set of each user and an average value of the voltage correlation coefficients between each phase sequence of each two users;
and the second determining unit is used for determining the phase sequence consistency results of all users on the target feeder line according to the target three-dimensional matrix.
Optionally, the second determining unit includes:
a first determining subunit, configured to determine, according to the target three-dimensional matrix, an average value of voltage correlation coefficients corresponding to the first user and the second user, and an average value of voltage correlation coefficients corresponding to the second user and a third user, where the third user is any user on a target feeder other than the first user and the second user;
a second determining subunit, configured to determine a corresponding metering phase sequence between the first user and the second user according to an average value of voltage correlation coefficients corresponding between the first user and the second user;
a third determining subunit, configured to determine a corresponding metering phase sequence between the second user and the third user according to an average value of voltage correlation coefficients corresponding between the second user and the third user;
a fourth determining subunit, configured to determine a corresponding metering phase sequence between the first user and the third user according to the corresponding metering phase sequence between the first user and the second user and the corresponding metering phase sequence between the second user and the third user;
and a fifth determining subunit, configured to determine phase sequence consistency results of all users on the target feeder according to the corresponding metering phase sequence between the first user and the third user.
Optionally, the fifth determining subunit is specifically configured to:
and taking other users except the first user, the second user and the third user on the target feed line as new third users, and returning to execute the operation of determining the average value of the corresponding voltage correlation coefficients between the first user and the second user and the average value of the corresponding voltage correlation coefficients between the second user and the third user according to the target three-dimensional matrix until all the users on the target feed line determine the phase sequence consistency result.
Optionally, determining the phase sequence consistency result by all users on the target feeder line includes: and if the metering phase sequences of all the third users on the target feeder line are consistent with those of the first users, determining that the voltage phase sequence consistency results of all the users on the target feeder line are consistent with each other.
The product can execute the method for determining the consistency of the voltage phase sequence, which is provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the method for determining the consistency of the voltage phase sequence.
Example III
Fig. 3 shows a schematic diagram of an electronic device 30 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 3, the electronic device 30 includes at least one processor 31, and a memory, such as a Read Only Memory (ROM) 32, a Random Access Memory (RAM) 33, etc., communicatively connected to the at least one processor 31, wherein the memory stores a computer program executable by the at least one processor, and the processor 31 can perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 32 or the computer program loaded from the storage unit 38 into the Random Access Memory (RAM) 33. In the RAM 33, various programs and data required for the operation of the electronic device 30 may also be stored. The processor 31, the ROM 32 and the RAM 33 are connected to each other via a bus 34. An input/output (I/O) interface 35 is also connected to bus 34.
Various components in electronic device 30 are connected to I/O interface 35, including: an input unit 36 such as a keyboard, a mouse, etc.; an output unit 37 such as various types of displays, speakers, and the like; a storage unit 38 such as a magnetic disk, an optical disk, or the like; and a communication unit 39 such as a network card, modem, wireless communication transceiver, etc. The communication unit 39 allows the electronic device 30 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 31 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 31 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 31 performs the various methods and processes described above, such as the voltage phase sequence consistency determination method:
acquiring voltage data of all users on a target feeder line, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence;
determining a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user;
and determining phase sequence consistency results of all users on the target feeder line according to the voltage correlation coefficient between each phase sequence of every two users.
In some embodiments, the voltage phase sequence consistency determination method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 38. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 30 via the ROM 32 and/or the communication unit 39. When a computer program is loaded into RAM 33 and executed by processor 31, one or more steps of the voltage phase sequence consistency determination method described above may be performed. Alternatively, in other embodiments, the processor 31 may be configured to perform the voltage phase sequence consistency determination method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for determining consistency of voltage phase sequences, comprising:
acquiring voltage data of all users on a target feeder line, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence;
determining a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user;
and determining phase sequence consistency results of all users on the target feeder line according to the voltage correlation coefficient between each phase sequence of every two users.
2. The method of claim 1, wherein determining phase sequence consistency results for all users on the target feeder based on a voltage correlation coefficient between each phase sequence of each two users comprises:
determining a target two-dimensional matrix according to the voltage correlation coefficient between each phase sequence of every two users, wherein each element in the target two-dimensional matrix represents the voltage correlation coefficient between each phase sequence of every two users;
determining a first parameter according to the target two-dimensional matrix, wherein the first parameter is the largest voltage correlation coefficient in the voltage correlation coefficients between each two phase sequences of every two users;
and if the first parameter is greater than or equal to a first preset threshold value, determining that a strong correlation of the voltage data exists between the two users.
3. The method as recited in claim 2, further comprising:
determining a second parameter according to the target two-dimensional matrix, wherein the second parameter is the smallest voltage correlation coefficient in the voltage correlation coefficients between each two phase sequences of every two users;
if the difference value between the first parameter and the second parameter is larger than or equal to a second preset threshold value, acquiring a phase sequence arrangement set corresponding to a first phase sequence, a second phase sequence and a third phase sequence of the voltage data of each user;
determining the average value of the voltage correlation coefficient between each phase sequence of each two users according to the phase sequence arrangement set of each user, wherein the average value of the voltage correlation coefficient between each phase sequence of each two users is the average value of all the voltage correlation coefficients between the first user and the second user when the first user is arranged in a first phase sequence and the second user is arranged in all the phases in the phase sequence arrangement set, the first user is any user on a target feed line, and the second user is any user except the first user on the target feed line;
and determining the phase sequence consistency result of all users on the target feeder line according to the average value of the voltage correlation coefficient between each phase sequence of every two users.
4. A method according to claim 3, wherein determining phase sequence identity results for all users on the target feeder based on an average of voltage correlation coefficients between each phase sequence of every two users comprises:
determining a target three-dimensional matrix according to the phase sequence arrangement set of each user and the average value of the voltage correlation coefficient between each phase sequence of each two users;
and determining phase sequence consistency results of all users on the target feeder line according to the target three-dimensional matrix.
5. The method of claim 4, wherein determining phase sequence consistency results for all users on a target feeder based on the target three-dimensional matrix comprises:
determining an average value of voltage correlation coefficients corresponding to the first user and the second user and an average value of voltage correlation coefficients corresponding to the second user and a third user according to the target three-dimensional matrix, wherein the third user is any user except the first user and the second user on a target feed line;
determining a corresponding metering phase sequence between the first user and the second user according to an average value of corresponding voltage correlation coefficients between the first user and the second user;
determining a corresponding metering phase sequence between the second user and the third user according to an average value of corresponding voltage correlation coefficients between the second user and the third user;
determining the corresponding metering phase sequence between the first user and the third user according to the corresponding metering phase sequence between the first user and the second user and the corresponding metering phase sequence between the second user and the third user;
and determining phase sequence consistency results of all users on a target feeder line according to the corresponding metering phase sequences between the first user and the third user.
6. The method of claim 5, wherein determining phase sequence uniformity results for all users on a target feeder based on corresponding metered phase sequences between the first user and the third user comprises:
and taking other users except the first user, the second user and the third user on the target feed line as new third users, and returning to execute the operation of determining the average value of the corresponding voltage correlation coefficients between the first user and the second user and the average value of the corresponding voltage correlation coefficients between the second user and the third user according to the target three-dimensional matrix until all the users on the target feed line determine the phase sequence consistency result.
7. The method of claim 6, wherein determining phase sequence consistency results for all users on the target feed line comprises: and if the metering phase sequences of all the third users on the target feeder line are consistent with those of the first users, determining that the voltage phase sequence consistency results of all the users on the target feeder line are consistent with each other.
8. A voltage phase sequence consistency determination device, comprising:
the acquisition module is used for acquiring voltage data of all users on the target feeder line, wherein each voltage data comprises a first phase sequence, a second phase sequence and a third phase sequence;
the first determining module is used for determining a voltage correlation coefficient between each phase sequence of each two users according to the voltage data of each user;
and the second determining module is used for determining phase sequence consistency results of all users on the target feeder line according to the voltage correlation coefficient between each phase sequence of every two users.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the voltage phase sequence correspondence determination method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to perform the method of determining phase sequence identity of voltages of any one of claims 1-7.
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| CN117849692A (en) * | 2024-03-08 | 2024-04-09 | 武汉格蓝若智能技术股份有限公司 | Method and system for monitoring phase sequence abnormality of secondary circuit of transformer in transformer substation |
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| CN117849692A (en) * | 2024-03-08 | 2024-04-09 | 武汉格蓝若智能技术股份有限公司 | Method and system for monitoring phase sequence abnormality of secondary circuit of transformer in transformer substation |
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