CN110082595B - Phase identification method and device for resident single-phase electric energy meter and computer equipment - Google Patents
Phase identification method and device for resident single-phase electric energy meter and computer equipment Download PDFInfo
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- CN110082595B CN110082595B CN201910520199.3A CN201910520199A CN110082595B CN 110082595 B CN110082595 B CN 110082595B CN 201910520199 A CN201910520199 A CN 201910520199A CN 110082595 B CN110082595 B CN 110082595B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The application relates to a phase identification method and device for a resident single-phase electric energy meter and computer equipment. The method comprises the following steps: acquiring single-phase change instantaneous power of a resident single-phase electric energy meter; acquiring three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power; identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase varying instantaneous power; and determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter. By adopting the method, additional phase identification equipment or chips are not needed, so that the phase identification efficiency of the single-phase electric energy meter can be improved, the phase identification cost can be saved, and the phase identification and determination of the resident single-phase electric energy meter can be realized.
Description
Technical Field
The application relates to the field of information processing of power systems, in particular to a phase identification method and device of a resident single-phase electric energy meter, computer equipment and a storage medium.
Background
With the development of the depth of the improvement work of the service quality of the power distribution network and the continuous development of the information processing technology of the power system, the distribution quality and the power utilization management level of a transformer area are in key improvement stages at present, but the line loss analysis of the transformer area cannot be performed due to the loss of phase information of part of resident electric energy meters, and the increasingly refined management requirements cannot be met.
The existing phase identification method for the single-phase electric energy meter of the residents generally needs to use a special phase identification instrument to carry out on-site identification, or realizes phase identification by combining a specific communication chip with a communication technology, so that the method not only depends on professional hardware equipment, but also wastes resources such as manpower and material resources, and the phase identification cost of the single-phase electric energy meter of the residents is high.
Therefore, the existing phase identification method for the resident single-phase electric energy meter has the problem of high identification cost.
Disclosure of Invention
Therefore, it is necessary to provide a method, an apparatus, a computer device and a storage medium for identifying the phase of the residential single-phase electric energy meter, which can reasonably solve the technical problem that the identification cost of the phase identification method of the residential single-phase electric energy meter is high.
A phase identification method for a resident single-phase electric energy meter comprises the following steps:
acquiring single-phase change instantaneous power of a resident single-phase electric energy meter;
acquiring three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power;
identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase varying instantaneous power;
and determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
In one embodiment, the determining the hanging phase of the residential single-phase electric energy meter on the platform area three-phase electric energy meter according to the single-phase power variation parameter and the three-phase power variation parameter includes:
matching the single-phase power change direction with the three-phase power change direction; the three-phase power change direction comprises an A-phase power change direction, a B-phase power change direction and a C-phase power change direction;
and when the single-phase power change direction is matched with any one of the A-phase power change direction, the B-phase power change direction and the C-phase power change direction, determining the A-phase, the B-phase or the C-phase with the matched power change direction as the phase of the resident single-phase electric energy meter.
In one embodiment, the single-phase power variation parameter includes a single-phase power variation value, the three-phase power variation parameter includes a three-phase power variation value, and the method further includes:
determining a plurality of candidate phases when the single-phase power change direction matches any of the A-phase power change direction, the B-phase power change direction, and the C-phase power change direction; the candidate phases are an A phase, a B phase or a C phase matched with the single-phase power change direction;
extracting a plurality of candidate phase power variation values of the plurality of candidate phases from the three-phase power variation values;
calculating differences between the single-phase power change values and the candidate phase power change values respectively to obtain a plurality of power change difference values;
and determining the phase of the resident single-phase electric energy meter according to the plurality of power change difference values.
In one embodiment, the determining the phase of the residential single-phase electric energy meter according to the plurality of power variation difference values comprises:
matching the power change difference values with a preset power change threshold value respectively;
determining a target power change difference value; the target power change difference is a power change difference that reaches the power change threshold among the plurality of power change differences;
and determining the station area phase of the target power change difference value as the phase of the resident single-phase electric energy meter.
In one embodiment, the obtaining the single-phase change instantaneous power of the resident single-phase electric energy meter comprises:
acquiring a single-phase power signal of the resident single-phase electric energy meter;
when the power value change exists in the single-phase power signal, determining the power change moment of the single-phase power signal;
and extracting the single-phase power at the moment of the power change as the single-phase change instantaneous power.
In one embodiment, the obtaining three-phase instantaneous power of a three-phase electric energy meter in a distribution room according to the power collection time of the single-phase change instantaneous power includes:
acquiring the A-phase instantaneous power, the B-phase instantaneous power and the C-phase instantaneous power of the three-phase electric energy meter of the transformer area at the power acquisition time;
determining the A-phase instantaneous power, the B-phase instantaneous power, and the C-phase instantaneous power as the three-phase instantaneous power.
In one embodiment, the identifying a three-phase power variation parameter of the three-phase instantaneous power and identifying a single-phase power variation parameter of the single-phase variation instantaneous power includes:
identifying a three-phase power change direction and/or a three-phase power change value of the three-phase instantaneous power as the three-phase power change parameter;
identifying a single-phase power change direction of the single-phase change instantaneous power, and/or a single-phase power change value as the single-phase power change parameter.
A phase identifying apparatus of a resident single-phase electric energy meter, the apparatus comprising:
the single-phase instantaneous power acquisition module is used for acquiring single-phase change instantaneous power of the resident single-phase electric energy meter;
the three-phase instantaneous power acquisition module is used for acquiring the three-phase instantaneous power of the three-phase electric energy meter in the transformer area according to the power acquisition time of the single-phase change instantaneous power;
the power change parameter identification module is used for identifying a three-phase power change parameter of the three-phase instantaneous power and identifying a single-phase power change parameter of the single-phase instantaneous power;
and the single-phase electric energy meter phase determining module is used for determining the hanging phase of the resident single-phase electric energy meter on the platform area three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring single-phase change instantaneous power of a resident single-phase electric energy meter;
acquiring three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power;
identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase varying instantaneous power;
and determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring single-phase change instantaneous power of a resident single-phase electric energy meter;
acquiring three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power;
identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase varying instantaneous power;
and determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
According to the phase identification method, the phase identification device, the computer equipment and the storage medium of the resident single-phase electric energy meter, the metering terminal or the metering server firstly obtains the single-phase change instantaneous power of the resident single-phase electric energy meter, further obtains the three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power, and determines the hanging phase of the resident single-phase electric energy meter on the three-phase electric energy meter in the distribution room according to the single-phase power change parameter and the three-phase power change parameter on the basis of identifying the three-phase power change parameter of the three-phase instantaneous power and the single-phase power change parameter of the single-phase. By adopting the method, additional phase identification equipment or chips are not needed, so that the phase identification efficiency of the single-phase electric energy meter can be improved, the phase identification cost can be saved, and the phase identification and determination of the resident single-phase electric energy meter can be realized.
Drawings
FIG. 1 is a diagram illustrating an exemplary embodiment of a phase recognition method for a residential single-phase electric energy meter;
FIG. 2 is a schematic flow chart illustrating a phase identification method of the residential single-phase electric energy meter according to an embodiment;
FIG. 3 is a block diagram showing a phase identifying apparatus of the resident single-phase electric energy meter in one embodiment;
FIG. 4 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The phase identification method of the residential single-phase electric energy meter provided by the invention can be applied to the application environment shown in figure 1. In a phase identification system of a residential single-phase electric energy meter, the phase identification system may include a residential single-phase electric energy meter 102, a district three-phase electric energy meter 104, a metering terminal 106 and a metering server 108, wherein the residential single-phase electric energy meter 102 and the district three-phase electric energy meter 104 are respectively in communication connection with the metering terminal 106, the metering terminal 106 and the metering server 108 establish communication connection through a network, the metering terminal 106 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices, and the metering server 108 may be implemented by an independent server or a server cluster composed of a plurality of servers.
In one embodiment, as shown in fig. 2, a phase identification method for a residential single-phase electric energy meter is provided, which is described by taking the method as an example applied to the metering terminal 106 or the metering server 108 in fig. 1, and includes the following steps:
and step S210, acquiring single-phase change instantaneous power of the resident single-phase electric energy meter.
The single-phase change instantaneous power can be the power of the electric energy signal detected by the resident single-phase electric energy meter when the electric energy signal changes at a certain moment, and if the change parameter is voltage or current, the instantaneous power at the corresponding change moment can be obtained, for example, +20W, +40W, -15W and the like.
In a specific implementation, if the metering terminal 106 has a data processing capability, the metering terminal 106 directly obtains the single-phase change instantaneous power transmitted by the resident single-phase electric energy meter 102, and if the metering terminal 106 does not have the data processing capability, the metering terminal 106 first obtains the single-phase change instantaneous power, and then uploads the single-phase change instantaneous power to the metering server 108, and the metering server 108 completes the data processing step. Whether the metering terminal 106 or the metering server 108 acquires the single-phase change instantaneous power of the resident single-phase electric energy meter 102, the method may include firstly acquiring an electric energy signal of the resident single-phase electric energy meter 102, further extracting a power signal in the electric energy signal, and analyzing the power signal to acquire the single-phase change instantaneous power with a numerical value changing at a certain time; or after the electric energy signal is acquired, the voltage signal or the current signal in the electric energy signal is subjected to single-term or multi-term analysis, the voltage or the current with signal fluctuation at a certain time is determined, and the single-phase change instantaneous power is calculated by using an electric power formula P ═ UI.
For example, the metering terminal 106 or the metering server 108 directly acquires that the instantaneous power of the single-phase change of the resident single-phase electric energy meter 102 is "+ 20W", which means that the instantaneous power of the resident single-phase electric energy meter 102 is increased by "20W" at a certain time; or, the metering terminal 106 or the metering server 108 acquires that the voltage change of the resident single-phase electric energy meter 102 occurs at a certain time, the instantaneous voltage of the single-phase change is +20V, the current at the time is 50mA correspondingly acquired, and the instantaneous power of the single-phase change is 1W.
And S220, acquiring the three-phase instantaneous power of the three-phase electric energy meter in the transformer area according to the power acquisition time of the single-phase change instantaneous power.
The power collection time may be the time of collecting single-phase change instantaneous power, or the time of specific change of power in single-phase change instantaneous power, for example: 10S, 20S, etc.
In a specific implementation, after the metering terminal 106 or the metering server 108 acquires the single-phase change instantaneous power of the resident single-phase electric energy meter 102, the power acquisition time is analyzed, and then the three-phase instantaneous power of the three-phase electric energy meter 104 in the distribution area at the same time is acquired. The three-phase instantaneous power includes a phase a, a phase B, and a phase C instantaneous power of the transformer area three-phase electric energy meter 104.
For example, when the power collection time of the single-phase change instantaneous power is 12 hours, 20 minutes and 10 seconds, the a-phase, B-phase and C-phase instantaneous powers of the three-phase electric energy meter 104 in the subzone are correspondingly obtained within 12 hours, 20 minutes and 10 seconds.
Step S230, identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase variation instantaneous power.
The three-phase power variation parameter may include a power variation parameter of a phase, a phase B, and a phase C, the power variation parameter may include a power variation direction and a power variation value, the power variation direction may be a forward direction of power increase or a reverse direction of power decrease, and the power variation value may be a difference of power fluctuation variation.
In a specific implementation, after acquiring the single-phase change instantaneous power and the three-phase instantaneous power, the metering terminal 106 or the metering server 108 further identifies a three-phase power change parameter of the three-phase instantaneous power and a single-phase power change parameter of the single-phase change instantaneous power, that is, the phase identification of the resident single-phase electric energy meter is realized by using the relevance judgment between the three-phase power change parameter and the single-phase power change parameter.
It should be noted that the specific relevance determination may respectively determine the relevance between the three-phase power variation direction and the single-phase power variation direction, or further determine the relevance between the three-phase power variation value and the single-phase power variation value, and determine that the phase of the residential single-phase electric energy meter 102 belongs to a specific phase among the A, B, C three phases included in the transformer area three-phase electric energy meter 104 according to the magnitude of the relevance.
For example, the three-phase power variation parameters include an a-phase power variation parameter of "+ 20W", a B-phase power variation parameter of "+ 10W", and a C-phase power variation parameter of "-15W"; the single-phase power variation parameter is "+ 22W", wherein "+" represents "positive direction", "negative" represents "negative direction", and the power value is the power variation value.
And S240, determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
In a specific implementation, to identify the phase of the residential single-phase electric energy meter 102, a single phase of the residential single-phase electric energy meter 102 may be specifically identified as a certain phase of A, B, C three phases included in the transformer area three-phase electric energy meter 104 by using a single-phase power variation parameter of the residential single-phase electric energy meter 102 and a three-phase power variation parameter of the transformer area three-phase electric energy meter 104 through matching analysis or threshold judgment of the power variation parameters.
Specifically, the step of matching analysis or threshold judgment of the power variation parameter may include matching the power variation directions of the single-phase power variation parameter and the three-phase power variation parameter, and further performing numerical judgment in the same variation direction, where the numerical judgment may be implemented by analyzing the relative magnitude of the numerical difference between the single-phase power variation numerical value and the three-phase power variation numerical value to realize a specific phase of the residential single-phase electric energy meter 102.
For example, the single-phase power variation parameter of the residential single-phase electric energy meter 102 is "+ 22W", the three-phase power variation parameters respectively include an a-phase power variation parameter "+ 20W", a B-phase power variation parameter "+ 10W", and a C-phase power variation parameter "+ 15W", the power variation direction is first matched, the obtained single-phase power variation parameter is "+ 22W", the a-phase power variation parameter "+ 20W" and the B-phase power variation parameter "+ 10W" are matched, the power variation value is further subjected to threshold judgment, if the power variation threshold is "5W", the value difference between the single-phase power variation parameter "+ 22W" and the a-phase power variation parameter "+ 20W" is "2W", the value difference between the single-phase power variation parameter "+ 22W" and the B-phase power variation parameter "+ 10W" is "12W", "12W" is larger than "2W", and thus it is determined that the phase of the residential single-phase electric energy meter 102 is the a phase in the platform three-phase electric energy meter 104.
According to the phase identification method of the resident single-phase electric energy meter, the metering terminal or the metering server firstly obtains the single-phase change instantaneous power of the resident single-phase electric energy meter, then obtains the three-phase instantaneous power of the three-phase electric energy meter in the distribution area according to the power acquisition time of the single-phase change instantaneous power, and determines the hanging phase of the resident single-phase electric energy meter on the three-phase electric energy meter in the distribution area according to the single-phase power change parameter and the three-phase power change parameter on the basis of identifying the three-phase power change parameter of the three-phase instantaneous power and the single-phase power change parameter of the single-phase change instantaneous power. By adopting the method, additional phase identification equipment or chips are not needed, so that the phase identification efficiency of the single-phase electric energy meter can be improved, the phase identification cost can be saved, and the phase identification and determination of the resident single-phase electric energy meter can be realized.
In one embodiment, the single-phase power variation parameter includes a single-phase power variation direction, the three-phase power variation parameter includes a three-phase power variation direction, and the step S240 includes:
matching the single-phase power change direction with the three-phase power change direction; the three-phase power change direction comprises an A-phase power change direction, a B-phase power change direction and a C-phase power change direction; and when the single-phase power change direction is matched with any one of the A-phase power change direction, the B-phase power change direction and the C-phase power change direction, determining the A-phase, the B-phase or the C-phase with the matched power change direction as the phase of the resident single-phase electric energy meter.
The single-phase power change direction may be a change trend of the single-phase power of the residential single-phase electric energy meter 102, for example, if the single-phase power is increased, the single-phase power change direction is a "forward direction"; when the single-phase power changes in a decreasing way, the single-phase power changes in a negative direction.
The three-phase power variation direction refers to a power variation trend of the phase a, the phase B and the phase C in the three-phase electric energy meter 104 of the distribution room, and includes a "positive direction" and a "negative direction".
In a specific implementation, to determine the phase of the residential single-phase electric energy meter 102, the metering terminal 106 or the metering server 108 may determine a phase with a uniformly changing direction as the phase of the residential single-phase electric energy meter 102 through a power change direction matching result between the single-phase power change parameter and the three-phase power change parameter.
For example, if the single-phase power variation parameter is "+ 22W", the single-phase power variation direction is "forward"; the three-phase power change parameters include an a-phase power change parameter "+ 20W", a B-phase power change parameter "-10W", and a C-phase power change parameter "-15W", wherein the a-phase power change direction is "positive", the B-phase power change direction is "negative", and the C-phase power change direction is "negative", only a is matched and consistent, and the phase of the residential single-phase electric energy meter 102 is the a phase in the transformer area three-phase electric energy meter 104.
In one embodiment, the single-phase power variation parameter includes a single-phase power variation value, the three-phase power variation parameter includes a three-phase power variation value, and the step S240 further includes:
determining a plurality of candidate phases when the single-phase power change direction matches any of the A-phase power change direction, the B-phase power change direction, and the C-phase power change direction; the candidate phases are an A phase, a B phase or a C phase matched with the single-phase change power change direction; extracting a plurality of candidate phase power variation values of the plurality of candidate phases from the three-phase power variation values; calculating differences between the single-phase power change values and the candidate phase power change values respectively to obtain a plurality of power change difference values; and determining the phase of the resident single-phase electric energy meter according to the plurality of power change difference values.
The single-phase power variation value may be a specific variation value of the single-phase power of the residential single-phase electric energy meter 102, for example, the initial value of the single-phase power is "10W", the final value is "15W", and the single-phase power variation value is "5W".
The three-phase power variation value may be a power variation value of a phase, B phase and C phase in the platform three-phase electric energy meter 104, for example, 10W, 20W, 30W, and the like.
In a specific implementation, the metering terminal 106 or the metering server 108 determines the phase of the residential single-phase electric energy meter 102 according to a power change direction matching result between the single-phase power change parameter and the three-phase power change parameter, if the power change direction matching result is that only one phase is matched and consistent, the phase can be used as the phase of the residential single-phase electric energy meter 102, and if at least two phases are matched and consistent, the phase of the residential single-phase electric energy meter 102 needs to be further judged according to a power change value.
For example, if the single-phase power variation parameter is "+ 22W", the single-phase power variation direction is "forward"; the three-phase power change parameters include an a-phase power change parameter "+ 20W", a B-phase power change parameter "+ 10W", and a C-phase power change parameter "-15W", wherein the a-phase power change direction is "positive", the B-phase power change direction is "positive", and the C-phase power change direction is "negative", then the a-phase and B-phase directions match and are consistent, the a-phase and B-phase serve as a plurality of candidate phases, and the phase of the residential single-phase electric energy meter 102 needs to be determined further according to the power change values of the a-phase and the B-phase.
Specifically, the specific step of determining the phase of the residential single-phase electric energy meter 102 according to the power change values of the a-phase and the B-phase may be to calculate the difference between the single-phase power change value and the power change values of the a-phase and the B-phase, respectively, and then determine the phase of the residential single-phase electric energy meter 102 according to the determination method of the difference between the single-phase power change value and the power change values of the a-phase and the B-phase.
In one embodiment, the determining the phase of the residential single-phase electric energy meter according to the plurality of power variation difference values comprises:
matching the power change difference values with a preset power change threshold value respectively; determining a target power change difference value; the target power change difference is a power change difference that reaches the power change threshold among the plurality of power change differences; and determining the station area phase of the target power change difference value as the phase of the resident single-phase electric energy meter.
The power variation threshold may be a power threshold preset in the system and stored to determine whether the phase is matched, for example, 2W, 3W, or 4W.
In a specific implementation, when the metering terminal 106 or the metering server 108 determines the phase of the residential single-phase electric energy meter 102 according to the power change direction matching result between the single-phase power change parameter and the three-phase power change parameter, at least two phases of the phase a, the phase B, and the phase C may be consistent with the single-phase of the residential single-phase electric energy meter 102, the phase of the residential single-phase electric energy meter 102 needs to be further determined according to the power change value, that is, on the basis of obtaining a plurality of power change difference values through calculation, the plurality of power change difference values are respectively matched with a preset power change threshold value, and the station area phase with the consistent matching result is used as the phase of the residential single-phase electric energy meter 102.
For example, if the single-phase power variation parameter is "+ 22W", the a-phase power variation parameter included in the three-phase power variation parameter is "+ 20W", the B-phase power variation parameter is "+ 10W", and the C-phase power variation parameter is "-15W", the power variation difference between the single-phase power variation parameter "+ 22W" and the a-phase power variation parameter "+ 20W" is "2W", and the power variation difference between the single-phase power variation parameter "+ 22W" and the B-phase power variation parameter "+ 10W" is "12W", then it is determined that the phase of the civilian single-phase electric energy meter 102 is the a phase in the transformer district three-phase electric energy meter 104.
In one embodiment, the step S210 includes:
acquiring a single-phase power signal of the resident single-phase electric energy meter; when the power value change exists in the single-phase power signal, determining the power change moment of the single-phase power signal; and extracting the single-phase power at the moment of the power change as the single-phase change instantaneous power.
The single-phase power signal may be a power signal within a preset time period, and the power signal may be acquired in a waveform manner or may be acquired in a digital manner.
In a specific implementation, the metering terminal 106 or the metering server 108 may obtain a single-phase power signal of the resident single-phase electric energy meter 102, and then determine whether a power value change exists in the single-phase power signal, and if a power value change occurs in the single-phase power signal at a certain time, determine a power change time of the single-phase power signal, and then extract the single-phase power at the time as the single-phase change instantaneous power.
In one embodiment, the step S220 includes:
acquiring the A-phase instantaneous power, the B-phase instantaneous power and the C-phase instantaneous power of the three-phase electric energy meter of the transformer area at the power acquisition time; determining the A-phase instantaneous power, the B-phase instantaneous power, and the C-phase instantaneous power as the three-phase instantaneous power.
In a specific implementation, the distribution room three-phase electric energy meter 104 is provided with an a-phase line, a B-phase line and a C-phase line, and to obtain three-phase instantaneous power, the a-phase instantaneous power, the B-phase instantaneous power and the C-phase instantaneous power may be respectively obtained, and three-phase instantaneous power is obtained by counting A, B, C three-phase instantaneous power.
In one embodiment, the step S230 includes:
identifying a three-phase power change direction and/or a three-phase power change value of the three-phase instantaneous power as the three-phase power change parameter; identifying a single-phase power change direction of the single-phase change instantaneous power, and/or a single-phase power change value as the single-phase power change parameter.
In a specific implementation, the three-phase power variation parameter may include a three-phase power variation direction and/or a three-phase power variation value, that is, A, B, C three-phase power variation direction and/or power variation value; the single-phase power variation parameter may include a single-phase power variation direction and/or a single-phase power variation value.
According to the scheme provided by the embodiment of the invention, the metering terminal or the metering server can acquire the single-phase power change parameter and the three-phase power change parameter through the communication connection with the resident single-phase electric energy meter and the district three-phase electric energy meter, and determine the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter by using the modes of power change direction matching, power change numerical judgment and the like. By adopting the method, additional phase identification equipment or chips are not needed, so that the phase identification efficiency of the single-phase electric energy meter can be improved, the phase identification cost can be saved, and the phase identification and determination of the resident single-phase electric energy meter can be realized.
It should be understood that, although the steps in the flowchart of fig. 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 2 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 3, there is provided a phase identification apparatus of a residential single-phase electric energy meter, comprising a single-phase instantaneous power acquisition module 310, a three-phase instantaneous power acquisition module 320, a power variation parameter identification module 330, and a single-phase electric energy meter phase determination module 340, wherein:
the single-phase instantaneous power acquisition module 310 is used for acquiring single-phase change instantaneous power of the resident single-phase electric energy meter;
the three-phase instantaneous power acquisition module 320 is used for acquiring the three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power;
a power variation parameter identification module 330 for identifying a three-phase power variation parameter of the three-phase instantaneous power and identifying a single-phase power variation parameter of the single-phase variation instantaneous power;
and the single-phase electric energy meter phase determining module 340 is configured to determine a hanging phase of the residential single-phase electric energy meter on the three-phase electric energy meter in the distribution area according to the single-phase power variation parameter and the three-phase power variation parameter.
According to the scheme provided by the embodiment of the invention, the metering terminal or the metering server firstly obtains the single-phase change instantaneous power of the resident single-phase electric energy meter, further obtains the three-phase instantaneous power of the three-phase electric energy meter in the distribution area according to the power acquisition time of the single-phase change instantaneous power, and determines the hanging phase of the resident single-phase electric energy meter on the three-phase electric energy meter in the distribution area according to the single-phase power change parameter and the three-phase power change parameter on the basis of identifying the three-phase power change parameter of the three-phase instantaneous power and the single-phase power change parameter of the single-phase change instantaneous power. By adopting the method, additional phase identification equipment or chips are not needed, so that the phase identification efficiency of the single-phase electric energy meter can be improved, the phase identification cost can be saved, and the phase identification and determination of the resident single-phase electric energy meter can be realized.
In one embodiment, the single-phase power variation parameter includes a single-phase power variation direction, the three-phase power variation parameter includes a three-phase power variation direction, and the single-phase power meter phase determination module 340 includes:
the power change direction matching submodule is used for matching the single-phase power change direction with the three-phase power change direction; the three-phase power change direction comprises an A-phase power change direction, a B-phase power change direction and a C-phase power change direction; and the single-phase electric energy meter phase determining submodule is used for determining the phase A, the phase B or the phase C matched with the power change direction as the phase of the resident single-phase electric energy meter when the single-phase power change direction is matched with any one of the phase A power change direction, the phase B power change direction and the phase C power change direction.
In one embodiment, the single-phase power variation parameter includes a single-phase power variation value, the three-phase power variation parameter includes a three-phase power variation value, and the single-phase power meter phase determination module 340 further includes:
a plurality of candidate phase determination submodules configured to determine a plurality of candidate phases when the single-phase power change direction matches any of the a-phase power change direction, the B-phase power change direction, and the C-phase power change direction; the candidate phases are an A phase, a B phase or a C phase matched with the single-phase change power change direction; a plurality of candidate phase power variation value extraction sub-modules for extracting a plurality of candidate phase power variation values of the plurality of candidate phases among the three-phase power variation values; the power change difference calculation submodules are used for calculating the difference between the single-phase power change value and the candidate phase power change values respectively to obtain a plurality of power change difference values; and the resident single-phase electric energy meter phase determining submodule is used for determining the phase of the resident single-phase electric energy meter according to the plurality of power change difference values.
In one embodiment, the resident single-phase electric energy meter phase determination submodule includes:
the power change difference matching unit is used for matching the plurality of power change differences with a preset power change threshold respectively; a target power change difference determination unit for determining a target power change difference; the target power change difference is a power change difference that reaches the power change threshold among the plurality of power change differences; and the phase determining unit of the resident single-phase electric energy meter is used for determining the station area phase of the target power change difference value as the phase of the resident single-phase electric energy meter.
In one embodiment, the single-phase instantaneous power acquisition module 310 includes:
the single-phase power signal acquisition submodule is used for acquiring a single-phase power signal of the resident single-phase electric energy meter; the power change moment determining submodule is used for determining the power change moment of the single-phase power signal when the power value in the single-phase power signal changes; and the single-phase change instantaneous power extraction submodule is used for extracting the single-phase power at the power change moment as the single-phase change instantaneous power.
In one embodiment, the three-phase instantaneous power acquisition module 320 includes:
the three-phase instantaneous power acquisition submodule is used for acquiring the A-phase instantaneous power, the B-phase instantaneous power and the C-phase instantaneous power of the three-phase electric energy meter of the transformer area at the power acquisition time; a three-phase instantaneous power determination sub-module for determining the A-phase instantaneous power, the B-phase instantaneous power, and the C-phase instantaneous power as the three-phase instantaneous power.
In one embodiment, the power variation parameter identification module 330 includes:
the three-phase power change parameter identification submodule is used for identifying the three-phase power change direction of the three-phase instantaneous power and/or the three-phase power change value as the three-phase power change parameter; and the single-phase power change parameter identification submodule is used for identifying the single-phase power change direction of the single-phase change instantaneous power and/or the single-phase power change value as the single-phase power change parameter.
According to the scheme provided by the embodiment of the invention, the metering terminal or the metering server can acquire the single-phase power change parameter and the three-phase power change parameter through the communication connection with the resident single-phase electric energy meter and the district three-phase electric energy meter, and determine the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter by using the modes of power change direction matching, power change numerical judgment and the like. By adopting the method, additional phase identification equipment or chips are not needed, so that the phase identification efficiency of the single-phase electric energy meter can be improved, the phase identification cost can be saved, and the phase identification and determination of the resident single-phase electric energy meter can be realized.
For specific limitations of the phase identification device of the residential single-phase electric energy meter, reference may be made to the above limitations of the phase identification method of the residential single-phase electric energy meter, and details are not repeated here. All or part of the modules in the phase identification device of the residential single-phase electric energy meter can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 4. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing identification information and device information. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program realizes a phase identification method of the resident single-phase electric energy meter when being executed by the processor.
Those skilled in the art will appreciate that the architecture shown in fig. 4 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring single-phase change instantaneous power of a resident single-phase electric energy meter;
acquiring three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power;
identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase varying instantaneous power;
and determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
matching the single-phase power change direction with the three-phase power change direction; the three-phase power change direction comprises an A-phase power change direction, a B-phase power change direction and a C-phase power change direction; and when the single-phase power change direction is matched with any one of the A-phase power change direction, the B-phase power change direction and the C-phase power change direction, determining the A-phase, the B-phase or the C-phase with the matched power change direction as the phase of the resident single-phase electric energy meter.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining a plurality of candidate phases when the single-phase power change direction matches any of the A-phase power change direction, the B-phase power change direction, and the C-phase power change direction; the candidate phases are an A phase, a B phase or a C phase matched with the single-phase change power change direction; extracting a plurality of candidate phase power variation values of the plurality of candidate phases from the three-phase power variation values; calculating differences between the single-phase power change values and the candidate phase power change values respectively to obtain a plurality of power change difference values; and determining the phase of the resident single-phase electric energy meter according to the plurality of power change difference values.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
matching the power change difference values with a preset power change threshold value respectively; determining a target power change difference value; the target power change difference is a power change difference that reaches the power change threshold among the plurality of power change differences; and determining the station area phase of the target power change difference value as the phase of the resident single-phase electric energy meter.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring a single-phase power signal of the resident single-phase electric energy meter; when the power value change exists in the single-phase power signal, determining the power change moment of the single-phase power signal; and extracting the single-phase power at the moment of the power change as the single-phase change instantaneous power.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring the A-phase instantaneous power, the B-phase instantaneous power and the C-phase instantaneous power of the three-phase electric energy meter of the transformer area at the power acquisition time; determining the A-phase instantaneous power, the B-phase instantaneous power, and the C-phase instantaneous power as the three-phase instantaneous power.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
identifying a three-phase power change direction and/or a three-phase power change value of the three-phase instantaneous power as the three-phase power change parameter; identifying a single-phase power change direction of the single-phase change instantaneous power, and/or a single-phase power change value as the single-phase power change parameter.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring single-phase change instantaneous power of a resident single-phase electric energy meter;
acquiring three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power;
identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase varying instantaneous power;
and determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
In one embodiment, the computer program when executed by the processor further performs the steps of:
matching the single-phase power change direction with the three-phase power change direction; the three-phase power change direction comprises an A-phase power change direction, a B-phase power change direction and a C-phase power change direction; and when the single-phase power change direction is matched with any one of the A-phase power change direction, the B-phase power change direction and the C-phase power change direction, determining the A-phase, the B-phase or the C-phase with the matched power change direction as the phase of the resident single-phase electric energy meter.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining a plurality of candidate phases when the single-phase power change direction matches any of the A-phase power change direction, the B-phase power change direction, and the C-phase power change direction; the candidate phases are an A phase, a B phase or a C phase matched with the single-phase change power change direction; extracting a plurality of candidate phase power variation values of the plurality of candidate phases from the three-phase power variation values; calculating differences between the single-phase power change values and the candidate phase power change values respectively to obtain a plurality of power change difference values; and determining the phase of the resident single-phase electric energy meter according to the plurality of power change difference values.
In one embodiment, the computer program when executed by the processor further performs the steps of:
matching the power change difference values with a preset power change threshold value respectively; determining a target power change difference value; the target power change difference is a power change difference that reaches the power change threshold among the plurality of power change differences; and determining the station area phase of the target power change difference value as the phase of the resident single-phase electric energy meter.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring a single-phase power signal of the resident single-phase electric energy meter; when the power value change exists in the single-phase power signal, determining the power change moment of the single-phase power signal; and extracting the single-phase power at the moment of the power change as the single-phase change instantaneous power.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the A-phase instantaneous power, the B-phase instantaneous power and the C-phase instantaneous power of the three-phase electric energy meter of the transformer area at the power acquisition time; determining the A-phase instantaneous power, the B-phase instantaneous power, and the C-phase instantaneous power as the three-phase instantaneous power.
In one embodiment, the computer program when executed by the processor further performs the steps of:
identifying a three-phase power change direction and/or a three-phase power change value of the three-phase instantaneous power as the three-phase power change parameter; identifying a single-phase power change direction of the single-phase change instantaneous power, and/or a single-phase power change value as the single-phase power change parameter.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A phase identification method of a resident single-phase electric energy meter is characterized by comprising the following steps:
acquiring single-phase change instantaneous power of a resident single-phase electric energy meter; the single-phase change instantaneous power is the single-phase change instantaneous power of the electric energy signal of the resident single-phase electric energy meter at the moment of instantaneous change;
acquiring three-phase instantaneous power of the three-phase electric energy meter in the distribution room according to the power acquisition time of the single-phase change instantaneous power;
identifying a three-phase power variation parameter of the three-phase instantaneous power, and identifying a single-phase power variation parameter of the single-phase varying instantaneous power;
and determining the hanging phase of the resident single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
2. The method according to claim 1, wherein the single-phase power variation parameter comprises a single-phase power variation direction, the three-phase power variation parameter comprises a three-phase power variation direction, and the determining the hanging phase of the residential single-phase electric energy meter on the district three-phase electric energy meter according to the single-phase power variation parameter and the three-phase power variation parameter comprises:
matching the single-phase power change direction with the three-phase power change direction; the three-phase power change direction comprises an A-phase power change direction, a B-phase power change direction and a C-phase power change direction;
and when the single-phase power change direction is matched with any one of the A-phase power change direction, the B-phase power change direction and the C-phase power change direction, determining the A-phase, the B-phase or the C-phase with the matched power change direction as the phase of the resident single-phase electric energy meter.
3. The method of claim 2, wherein the single-phase power variation parameter comprises a single-phase power variation value, and the three-phase power variation parameter comprises a three-phase power variation value, the method further comprising:
determining a plurality of candidate phases when the single-phase power change direction matches any of the A-phase power change direction, the B-phase power change direction, and the C-phase power change direction; the candidate phases are an A phase, a B phase or a C phase matched with the single-phase power change direction;
extracting a plurality of candidate phase power variation values of the plurality of candidate phases from the three-phase power variation values;
calculating differences between the single-phase power change values and the candidate phase power change values respectively to obtain a plurality of power change difference values;
and determining the phase of the resident single-phase electric energy meter according to the plurality of power change difference values.
4. The method according to claim 3, wherein said determining the phase of said residential single-phase electric energy meter based on said plurality of power variation differences comprises:
matching the power change difference values with a preset power change threshold value respectively;
determining a target power change difference value; the target power change difference is a power change difference that reaches the power change threshold among the plurality of power change differences;
and determining the station area phase of the target power change difference value as the phase of the resident single-phase electric energy meter.
5. The method according to claim 1, wherein the obtaining of the single-phase change instantaneous power of the resident single-phase electric energy meter comprises:
acquiring a single-phase power signal of the resident single-phase electric energy meter;
when the power value change exists in the single-phase power signal, determining the power change moment of the single-phase power signal;
and extracting the single-phase power at the moment of the power change as the single-phase change instantaneous power.
6. The method of claim 1, wherein the obtaining three-phase instantaneous power of a three-phase electric energy meter of a distribution area according to the power collection time of the single-phase change instantaneous power comprises:
acquiring the A-phase instantaneous power, the B-phase instantaneous power and the C-phase instantaneous power of the three-phase electric energy meter of the transformer area at the power acquisition time;
determining the A-phase instantaneous power, the B-phase instantaneous power, and the C-phase instantaneous power as the three-phase instantaneous power.
7. The method of claim 1, wherein the identifying a three-phase power variation parameter for the three-phase instantaneous power and identifying a single-phase power variation parameter for the single-phase varied instantaneous power comprises:
identifying a three-phase power change direction and/or a three-phase power change value of the three-phase instantaneous power as the three-phase power change parameter;
identifying a single-phase power change direction of the single-phase change instantaneous power, and/or a single-phase power change value as the single-phase power change parameter.
8. A phase recognition apparatus of a resident single-phase electric energy meter, comprising:
the single-phase instantaneous power acquisition module is used for acquiring single-phase change instantaneous power of the resident single-phase electric energy meter; the single-phase change instantaneous power is the single-phase change instantaneous power at the moment of the instantaneous change of the electric energy signal of the resident single-phase electric energy meter;
the three-phase instantaneous power acquisition module is used for acquiring the three-phase instantaneous power of the three-phase electric energy meter in the transformer area according to the power acquisition time of the single-phase change instantaneous power;
the power change parameter identification module is used for identifying a three-phase power change parameter of the three-phase instantaneous power and identifying a single-phase power change parameter of the single-phase instantaneous power;
and the single-phase electric energy meter phase determining module is used for determining the hanging phase of the resident single-phase electric energy meter on the platform area three-phase electric energy meter according to the single-phase power change parameter and the three-phase power change parameter.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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| CN110749852B (en) * | 2019-10-15 | 2022-02-01 | 南京林洋电力科技有限公司 | Phase identification method based on instantaneous three-phase power unbalance |
| CN110727715A (en) * | 2019-10-22 | 2020-01-24 | 南方电网科学研究院有限责任公司 | High-reliability-based power consumer daily electric quantity calculation method |
| CN110781224A (en) * | 2019-10-22 | 2020-02-11 | 南方电网科学研究院有限责任公司 | Data monitoring method based on electric power big data |
| CN112186740B (en) * | 2020-09-09 | 2022-04-08 | 北京市腾河电子技术有限公司 | Method and system for identifying station area for small-load user and storage medium |
| CN113075475B (en) * | 2021-03-24 | 2022-12-23 | 南方电网科学研究院有限责任公司 | Phase-splitting identification method and device for electric energy meters in distribution area, terminal and storage medium |
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