CN109767133B - Electric quantity compensation method and device based on load recorded data - Google Patents
Electric quantity compensation method and device based on load recorded data Download PDFInfo
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Abstract
The invention provides an electric quantity compensation method and device based on load recorded data, wherein the electric quantity compensation method based on the load recorded data comprises the following steps: acquiring abnormal voltage data and current data of a loop in a voltage abnormal time period, which are acquired according to a preset time interval; inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain a power factor of the load of the loop and a derived voltage value of the loop; and calculating the electric quantity compensation value in the abnormal time period by using the derived voltage value, the abnormal voltage data, the current data, the power factor and a preset compensation algorithm. The electric quantity compensation method based on the load recorded data can compensate the electric quantity of the three-phase loop under the condition of abnormal voltage and improve the accuracy of electric quantity compensation.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to an electric quantity compensation method and device based on load recorded data, electric quantity compensation computing equipment and a computer storage medium.
Background
In the power supply process, voltage abnormity faults are very common, and the causes of the voltage abnormity are various, such as the voltage abnormity caused by the influence of direct lightning or inductive lightning, short circuit on the low-voltage side of a transformer, ground fault on the high-voltage side of the transformer, wiring error of a secondary loop of a voltage transformer, line resonance and the like.
The conventional electric quantity compensation method for voltage abnormal time periods based on load recorded data generally utilizes a voltage loss timer or a four-in-one main station system in a loop to verify fault time, then performs electric quantity compensation by referring to historical running average load, and has no data support in the process of compensating electric quantity in a three-phase system, so that the accuracy of electric quantity compensation is very low.
Disclosure of Invention
In view of the above problems, the present invention provides a method and an apparatus for electric quantity compensation based on load logging data, an electric quantity compensation calculation device, and a computer storage medium, so as to compensate electric quantity in a three-phase circuit in the case of voltage abnormality and improve accuracy of electric quantity compensation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for electric quantity compensation based on load recorded data comprises the following steps:
acquiring abnormal voltage data and current data of a loop in a voltage abnormal time period, which are acquired according to a preset time interval;
inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain a power factor of the load of the loop and a derived voltage value of the loop;
and calculating the electric quantity compensation value in the abnormal time period by utilizing the derived voltage value, the abnormal voltage data, the current data, the power factor and a preset compensation algorithm.
Preferably, the formula of the preset compensation algorithm includes:
in the formula, W General assembly For compensating the electric quantity of the fault phase of an abnormal time period, U Derivation of i Deriving a voltage value, U, for the ith time of the fault phase of the loop i An abnormal voltage value sampled for the ith time of the fault phase of the loop, I i The current value sampled at the ith time of the loop fault phase,
and deriving the power factor of the ith moment of the loop fault phase, wherein t is a preset time interval.
Preferably, the pre-established load mathematical model comprises a convolutional neural network and a deep learning model.
Preferably, the step of inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain the power factor of the load of the loop and the loop-derived voltage value comprises:
after the abnormal voltage data of the loop are obtained, determining a single-phase circuit with abnormal voltage in the loop according to the abnormal voltage data of the loop;
and inputting the current data of the single-phase circuit into the pre-established load mathematical model to obtain the power factor of the load of the single-phase circuit and the derived voltage value of the single-phase circuit.
The invention also provides an electric quantity compensation device based on the load recorded data, which comprises:
the data acquisition module is used for acquiring abnormal voltage data and current data of a loop in a voltage abnormal time period, wherein the abnormal voltage data and the current data are acquired at preset time intervals;
the power factor acquisition module is used for inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain the power factor of the load of the loop and a derived voltage value of the loop;
and the compensation value calculation module is used for calculating an electric quantity compensation value in an abnormal time period by utilizing the derived voltage value, the abnormal voltage data, the current data, the power factor and a preset compensation algorithm.
Preferably, the formula of the preset compensation algorithm includes:
in the formula, W General (1) For compensating the electric quantity of the fault phase of an abnormal time period, U Derivation of i Deriving a voltage value, U, for the ith time of the loop fault phase i An abnormal voltage value sampled for the ith time of the fault phase of the loop, I i The current value sampled at the ith time of the loop fault phase,
and deriving the power factor of the loop fault phase at the ith moment, wherein t is a preset time interval.
Preferably, the pre-established load mathematical model comprises a convolutional neural network and a deep learning model.
Preferably, the power factor obtaining module includes:
the abnormal circuit determining unit is used for determining a single-phase circuit with voltage abnormality in the loop according to the abnormal voltage data of the loop after acquiring the abnormal voltage data of the loop;
and the power factor acquisition unit is used for inputting the current data of the single-phase circuit into the pre-established load mathematical model and acquiring the power factor of the load of the single-phase circuit and the derived voltage value of the single-phase circuit.
The invention also provides electric quantity compensation computing equipment, which comprises a memory and a processor, wherein the memory is used for storing a computer program, and the processor runs the computer program to enable the electric quantity compensation computing equipment to execute the electric quantity compensation method based on the load recording data.
The invention also provides a computer storage medium storing a computer program for use in the electric quantity compensation computing device.
The invention provides an electric quantity compensation method based on load recorded data, which comprises the following steps: acquiring abnormal voltage data and current data of a loop in a voltage abnormal time period, which are acquired according to a preset time interval; inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain a power factor of the load of the loop and a derived voltage value of the loop; and calculating the electric quantity compensation value in the abnormal time period by utilizing the derived voltage value, the abnormal voltage data, the current data, the power factor and a preset compensation algorithm. The electric quantity compensation method based on the load recorded data can compensate the electric quantity of the three-phase loop under the condition of abnormal voltage, and improves the accuracy of electric quantity compensation.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention.
Fig. 1 is a flowchart of an electric quantity compensation method based on load logging data according to embodiment 1 of the present invention;
fig. 2 is a flowchart of an electric quantity compensation method based on load logging data according to embodiment 2 of the present invention;
fig. 3 is a flowchart of an electric quantity compensation apparatus based on load recording data according to embodiment 3 of the present invention;
fig. 4 is a flowchart of a power factor obtaining module of the electric quantity compensation device based on load logging data according to embodiment 3 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Fig. 1 is a flowchart of an electric quantity compensation method based on load logging data according to embodiment 1 of the present invention, where the method includes the following steps:
step S11: and acquiring abnormal voltage data and current data of the loop in the voltage abnormal time period acquired according to a preset time interval.
In the embodiment of the invention, a metering device can be arranged in the loop, the voltage in the loop is monitored by using the metering device, the metering device is also a load device in the loop, or the load device in the loop has a metering function, and the voltage and current data of the loop are recorded. When the voltage in the loop is abnormal, for example, the voltage of a single-phase circuit in three-phase voltage is too low or zero directly, the metering device can collect abnormal voltage data and current data of the loop in a voltage abnormal time period according to a preset time interval and send the abnormal voltage data and the current data to the electric quantity compensation computing device. In the electric quantity compensation computing device, the abnormal voltage data and the current data can be stored as text files so as to be convenient for subsequent data analysis and electric quantity compensation.
In the embodiment of the present invention, the electric quantity compensation calculation device may further send an instruction to a metering device of the loop to periodically obtain voltage data and current data in the loop, and further obtain a derived voltage value and a normal current value in the loop, so as to be used for subsequent electric quantity compensation.
Step S12: and inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain the power factor of the load of the loop and the derived voltage value of the loop.
In the embodiment of the invention, after the electric quantity compensation computing equipment acquires the voltage abnormal data and the corresponding current data, the corresponding current data can be input into a pre-established load mathematical model so as to obtain the power factor of the corresponding load in the loop. The mathematical model of the load is established according to the real load in the loop, the load in the loop can comprise a device with reactive compensation and a device without reactive compensation, therefore, the electric quantity compensation calculation equipment also selects the corresponding load in the loop and inputs the current data into the corresponding mathematical model.
In the embodiment of the invention, the pre-established load mathematical model comprises a convolutional neural network and a deep learning model. The pre-established load mathematical model can be trained in advance, for example, current data of different load devices in a loop and related power factors can be collected to train the mathematical model, so that the accuracy of the mathematical model is improved.
In the embodiment of the invention, the electric quantity compensation calculation equipment can also obtain a derived voltage value in the loop by using a load mathematical model. The process of acquiring the derived voltage value can also be acquired by connecting the metering device and inquiring historical data in the metering device. For example, the metering device may be configured to measure the voltage value in the loop at preset time intervals, and transmit the measured voltage value to the electric quantity compensation computing device, and the electric quantity compensation computing device receives a plurality of measured voltage values of the loop and obtains a normal voltage value of the single-phase circuit in the loop according to a preset rule.
Step S13: and calculating the electric quantity compensation value in the abnormal time period by utilizing the derived voltage value, the abnormal voltage data, the current data, the power factor and a preset compensation algorithm.
In the embodiment of the invention, after acquiring the derived voltage value, the abnormal voltage data, the current data and the power factor, the electric quantity compensation calculation device can calculate the electric quantity compensation value of the fault phase in the abnormal time period by using a preset electric quantity compensation algorithm. The electric quantity compensation computing equipment can be provided with an application program based on a preset compensation algorithm, and after the electric quantity compensation computing equipment obtains the derived voltage value, the abnormal voltage data, the current data and the power factor, the derived voltage value, the abnormal voltage data, the current data and the power factor are input into the application program so as to obtain the electric quantity compensation value.
In an embodiment of the present invention, the formula of the predetermined compensation algorithm includes:
in the formula, W General (1) For compensating the electric quantity of the fault phase of an abnormal time period, U Derivation of i Deriving a voltage value, U, for the ith time of the loop fault phase i An abnormal voltage value sampled for the ith time of the fault phase of the loop, I i The sampled current value at the ith time of the loop fault phase,
and deriving the power factor of the loop fault phase at the ith moment, wherein t is a preset time interval.
Example 2
Fig. 2 is a flowchart of obtaining a power factor of a method for electric quantity compensation based on load logging data according to embodiment 2 of the present invention, where the method includes the following steps:
step S21: and after the abnormal voltage data of the loop are acquired, determining the single-phase circuit with the voltage abnormality in the loop according to the abnormal voltage data of the loop.
Step S22: and inputting the current data of the single-phase circuit into the pre-established load mathematical model to obtain the power factor of the load of the single-phase circuit and the derived voltage value of the single-phase circuit.
In the embodiment of the invention, after the electric quantity compensation computing equipment acquires abnormal voltage data in the loop, the abnormal single-phase circuit in the loop can be determined according to the abnormal data so as to acquire the derived voltage value of the abnormal single-phase circuit. The process of determining the single-phase circuit with the voltage abnormality in the loop may be implemented by using an algorithm or an application program, for example, an application program may be set in the electric quantity compensation computing device, and the abnormal voltage data of the loop may be acquired and then input into the application program, so as to determine the single-phase circuit with the voltage abnormality in the loop.
In the embodiment of the invention, after the single-phase circuit with voltage abnormality in the loop is determined, the electric quantity compensation computing device can input the current data of the single-phase circuit with voltage abnormality in the current data into a pre-established load mathematical model so as to obtain the power factor of the load of the single-phase circuit and the derived voltage value of the single-phase circuit.
Example 3
Fig. 3 is a flowchart of an electric quantity compensation device based on load logging data according to embodiment 3 of the present invention.
This electric quantity based on load record data chases after mends device 300 includes:
the data obtaining module 310 is configured to obtain abnormal voltage data and current data of the loop in the voltage abnormal time period, which are collected at preset time intervals.
And a power factor obtaining module 320, configured to input the current data into a pre-established load mathematical model corresponding to the load of the loop, and obtain the power factor of the load of the loop and a derived voltage value of the loop.
And a compensation value calculating module 330, configured to calculate an electric quantity compensation value in an abnormal time period by using the derived voltage value, the abnormal voltage data, the current data, the power factor, and a preset compensation algorithm.
In an embodiment of the present invention, the formula of the predetermined compensation algorithm includes:
in the formula, W General assembly For compensating the electric quantity of the fault phase of an abnormal time period, U Derivation of i Deriving a voltage value, U, for the ith time of the loop fault phase i An abnormal voltage value sampled for the ith time of the fault phase of the loop, I i The sampled current value at the ith time of the loop fault phase,
and deriving the power factor of the loop fault phase at the ith moment, wherein t is a preset time interval.
In the embodiment of the invention, the pre-established load mathematical model comprises a convolutional neural network and a deep learning model.
As shown in fig. 4, the power factor obtaining module 320 includes:
an abnormal circuit determining unit 321, configured to determine, after acquiring abnormal voltage data of the circuit, a single-phase circuit in the circuit where a voltage abnormality occurs according to the abnormal voltage data of the circuit.
A power factor obtaining unit 322, configured to input the current data of the single-phase circuit to the pre-established load mathematical model, and obtain the power factor of the load of the single-phase circuit and the derived voltage value of the single-phase circuit.
In the embodiment of the present invention, for more detailed description of functions of the above modules, reference may be made to contents of corresponding parts in the foregoing embodiment, which are not described again here.
In addition, the invention also provides an electric quantity compensation computing device, which comprises a memory and a processor, wherein the memory can be used for storing a computer program, and the processor runs the computer program, so that the electric quantity compensation computing device executes the functions of each module in the method or the electric quantity compensation device based on the load recorded data.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phone book, etc.) created from the use of the power compensation computing device, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The embodiment also provides a computer storage medium for storing a computer program used in the electric quantity compensation computing device.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a power compensation computing device (which may be a smart phone, a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An electric quantity compensation method based on load recorded data is characterized by comprising the following steps:
acquiring abnormal voltage data and current data of a loop in a voltage abnormal time period, which are acquired according to a preset time interval;
inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain a power factor of the load of the loop and a derived voltage value of the loop;
calculating an electric quantity compensation value of an abnormal time period by using the derived voltage value, the abnormal voltage data, the current data, the power factor and a preset compensation algorithm;
wherein, the formula of the preset compensation algorithm comprises:
in the formula, W General assembly For compensating the electric quantity of the fault phase of an abnormal time period, U Derivation of i Deriving a voltage value, U, for the ith time of the fault phase of the loop i An abnormal voltage value sampled for the ith time of the fault phase of the loop, I i The current value sampled at the ith time of the loop fault phase,
deducing power factors at the ith moment of the loop fault phase, wherein t is a preset time interval;
the pre-established load mathematical model comprises a convolutional neural network and a deep learning model.
2. The method for supplementing power based on load logging data according to claim 1, wherein the step of inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain the power factor of the load of the loop and the loop-derived voltage value comprises:
after the abnormal voltage data of the loop are obtained, determining a single-phase circuit with abnormal voltage in the loop according to the abnormal voltage data of the loop;
and inputting the current data of the single-phase circuit into the pre-established load mathematical model to obtain the power factor of the load of the single-phase circuit and the derived voltage value of the single-phase circuit.
3. The utility model provides an electric quantity chases after device based on load recorded data which characterized in that includes:
the data acquisition module is used for acquiring abnormal voltage data and current data of a loop in a voltage abnormal time period, wherein the abnormal voltage data and the current data are acquired at preset time intervals;
the power factor acquisition module is used for inputting the current data into a pre-established load mathematical model corresponding to the load of the loop to obtain the power factor of the load of the loop and a derived voltage value of the loop;
the compensation value calculation module is used for calculating an electric quantity compensation value in an abnormal time period by utilizing the derived voltage value, the abnormal voltage data, the current data, the power factor and a preset compensation algorithm;
wherein, the formula of the preset compensation algorithm comprises:
in the formula, W General (1) For compensating the electric quantity of the fault phase of an abnormal time period, U Derivation of i Deriving a voltage value, U, for the ith time of the loop fault phase i An abnormal voltage value sampled for the ith time of the fault phase of the loop, I i The current value sampled at the ith time of the loop fault phase,
deducing power factors at the ith moment of the loop fault phase, wherein t is a preset time interval;
the pre-established load mathematical model comprises a convolutional neural network and a deep learning model.
4. The device of claim 3, wherein the power factor obtaining module comprises:
the abnormal circuit determining unit is used for determining a single-phase circuit with abnormal voltage in the loop according to the abnormal voltage data of the loop after acquiring the abnormal voltage data of the loop;
and the power factor acquisition unit is used for inputting the current data of the single-phase circuit into the pre-established load mathematical model and acquiring the power factor of the load of the single-phase circuit and the derived voltage value of the single-phase circuit.
5. An electric quantity compensation computing device, characterized by comprising a memory for storing a computer program and a processor for executing the computer program to make the electric quantity compensation computing device execute the electric quantity compensation method based on the load recording data according to any one of claims 1 to 2.
6. A computer storage medium characterized by storing a computer program used in the electric quantity compensation calculation apparatus according to claim 5.
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| CN111830305A (en) * | 2020-06-28 | 2020-10-27 | 珠海普斯雷电子科技有限公司 | Electric quantity compensation measuring method and storage medium |
| CN113325232B (en) * | 2021-06-09 | 2023-02-17 | 贵州电网有限责任公司 | Electric quantity compensation device and method based on load record of electric energy meter |
| CN113986910B (en) * | 2021-12-29 | 2022-03-22 | 北京志翔科技股份有限公司 | Method and device for estimating electric quantity of current slope climbing abnormity in small amount |
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