Method, device, equipment and medium for determining real-time load rate of transformer

Abstract

The present application relates to a method, device, electronic device and storage medium for determining the real-time load rate of a transformer. The method includes: obtaining the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer and the rated current on the low-voltage side of the transformer; determining the calculation method of the real-time load rate of the transformer according to the definition of the real-time load rate of the transformer, the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side, the rated voltage on the low-voltage side of the transformer and the rated current on the low-voltage side of the transformer; determining the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer; determining the average load rate of the transformer per day according to the average load rate of the transformer per hour; determining the average load rate of the transformer per month according to the average load rate of the transformer per day; determining the average load rate of the transformer per year according to the average load rate of the transformer per month. In the present application, the actual measured value is used instead of the theoretical value, so as to improve the accuracy of calculating the load rate of the transformer.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a method, device, equipment and medium for determining a real-time load rate of a transformer. Background Art

[0002] If a building that has been used for many years is renovated, it is usually faced with the situation that the connection capacity of the existing low-voltage distribution system cannot meet the use needs after the renovation, so the distribution system of the building needs to be renovated and designed. The renovation design needs to know the actual operating energy efficiency of the building's electrical system, and the basis for evaluating the operating energy efficiency is the actual load rate of the transformer. According to the "Guidelines for the Selection of Power Transformers" in the mechanical industry standard GB / T17468-1998 of the transformer, "the life of the transformer is generally 20 years." If the transformer is in good condition during use and the actual load rate of the transformer has sufficient redundancy, it is given priority to reuse, so the actual load rate of the original transformer becomes particularly critical. However, even for buildings equipped with energy management system software, due to the functional limitations of the software, it is impossible to provide the actual load rate data of the transformer. Therefore, the design plan of the renovation project is usually determined based on the load calculation theoretical value of the "need coefficient method", and the difference between the theoretical value and the actual operating value is large, which often leads to unnecessary transformer replacement.

[0003] The energy management system is deployed in a three-layer structure, namely the application management layer, the communication network layer and the equipment layer. The application management layer includes: data servers, workstation computers, etc. The communication network layer includes: communication management machines, network switches and data collectors, etc. The equipment layer includes: power meters, water meters, etc. The communication management machine and the energy consumption metering device use the Modbus communication protocol, and the system uses the B / S software architecture. By collecting the building's electricity and water consumption data, analyzing the building's various energy consumption indicators and timely discovering energy consumption loopholes, and providing a variety of energy efficiency statistical reports, it is convenient for energy-saving management. The energy management system, power consumption analysis, mainly conducts load analysis and statistics according to load categories (power, lighting, etc.) and space partitions (buildings, floors, etc.), focusing on the overall energy consumption proportion of load categories and space partitions. There is no statistics and analysis of real-time load rate data based on transformers. Summary of the invention

[0004] Based on the above problems, the present application provides a method, device, equipment and medium for determining the real-time load rate of a transformer.

[0005] In a first aspect, an embodiment of the present application provides a method for determining a real-time load rate of a transformer, comprising:

[0006] Obtain the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer;

[0007] The calculation method of the transformer real-time load rate is determined according to the definition of transformer real-time load rate, transformer low-voltage side real-time voltage, low-voltage side real-time total current, transformer low-voltage side rated voltage and transformer low-voltage side rated current;

[0008] Determine the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer;

[0009] Determine the average daily load rate of the transformer based on the average hourly load rate of the transformer;

[0010] Determine the monthly average load rate of the transformer based on the daily average load rate of the transformer;

[0011] Determine the annual average load rate of the transformer based on the monthly average load rate of the transformer;

[0012] Among them, the calculation method of the real-time load rate of the transformer is equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current on the low-voltage side of the transformer.

[0013] Furthermore, the above method for determining the real-time load rate of the transformer also includes: displaying the change trend information of the average load rate of the transformer per hour, the average load rate of the transformer per day, the average load rate of the transformer per month and the average load rate of the transformer per year.

[0014] Furthermore, in the above method for determining the real-time load rate of the transformer, the average load rate of the transformer per hour is determined according to the calculation method of the real-time load rate of the transformer, including:

[0015] Determine the real-time total current on the low voltage side of the transformer every hour;

[0016] The average load rate of the transformer per hour is obtained according to the real-time total current of the transformer low-voltage side per hour and the rated current of the transformer low-voltage side.

[0017] Furthermore, in the above method for determining the real-time load rate of the transformer, determining the average daily load rate of the transformer according to the average hourly load rate of the transformer includes:

[0018] The average load rate of the transformer per hour in a day is averaged to obtain the average load rate of the transformer per day.

[0019] Furthermore, in the above method for determining the real-time load rate of the transformer, determining the monthly average load rate of the transformer according to the daily average load rate of the transformer includes:

[0020] The average transformer load factor for each day in a month is averaged to obtain the average transformer load factor for each month.

[0021] Furthermore, in the above method for determining the real-time load rate of the transformer, determining the annual average load rate of the transformer according to the monthly average load rate of the transformer includes:

[0022] The average transformer load factor per month in a year is averaged to obtain the average transformer load factor per year.

[0023] Furthermore, in the above method for determining the real-time load rate of the transformer, determining the real-time total current of the low-voltage side of the transformer per hour includes:

[0024] Get the three-phase current value of the transformer low-voltage side;

[0025] Calculate the average value of the three-phase current values ​​according to the three-phase current values ​​on the low-voltage side;

[0026] Divide each hour into N parts, and determine the maximum value of the average value of the three-phase current value in each of the N parts;

[0027] The maximum value of the average value of each three-phase current value in N parts is averaged to obtain the real-time total current of the low-voltage side of the transformer per hour.

[0028] In a second aspect, an embodiment of the present application further provides a device for determining a real-time load rate of a transformer, comprising:

[0029] Acquisition module: used to obtain the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer;

[0030] The first determination module is used to determine the calculation method of the real-time load rate of the transformer according to the definition of the real-time load rate of the transformer, the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer;

[0031] The second determination module is used to determine the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer;

[0032] The third determination module is used to determine the average daily load rate of the transformer according to the average hourly load rate of the transformer;

[0033] The fourth determination module is used to determine the monthly average load rate of the transformer according to the daily average load rate of the transformer;

[0034] The fifth determination module is used to determine the annual average load rate of the transformer according to the monthly average load rate of the transformer;

[0035] The calculation method of the real-time load rate of the transformer is equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current on the low-voltage side of the transformer.

[0036] In a third aspect, an embodiment of the present application further provides an electronic device, including: a processor and a memory;

[0037] The processor is used to execute any of the above-mentioned methods for determining the real-time load rate of the transformer by calling the program or instruction stored in the memory.

[0038] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program or instruction, wherein the program or instruction enables a computer to execute any of the above-mentioned methods for determining the real-time load rate of a transformer.

[0039] The advantages of the embodiments of the present application are: the present application relates to a method, device, electronic device and storage medium for determining the real-time load rate of a transformer, the method comprising: obtaining the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer and the rated current on the low-voltage side of the transformer; determining the calculation method of the real-time load rate of the transformer according to the definition of the real-time load rate of the transformer, the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side, the rated voltage on the low-voltage side of the transformer and the rated current on the low-voltage side of the transformer; determining the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer; determining the average load rate of the transformer per day according to the average load rate of the transformer per hour; determining the average load rate of the transformer per month according to the average load rate of the transformer per day; determining the average load rate of the transformer per year according to the average load rate of the transformer per month. In the present application, the accuracy of calculating the load rate of the transformer is improved by using the measured value instead of the theoretical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 The method for determining the real-time load rate of the transformer provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0042] Figure 2 The method for determining the real-time load rate of the transformer provided in the embodiment of the present application is shown in FIG. Figure 2 ;

[0043] Figure 3 The method for determining the real-time load rate of the transformer provided in the embodiment of the present application is shown in FIG. Figure 3 ;

[0044] Figure 4A schematic diagram of a device for determining a real-time load rate of a transformer provided in an embodiment of the present application;

[0045] Figure 5 It is a schematic block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] Figure 1 The method for determining the real-time load rate of the transformer provided in the embodiment of the present application is shown in FIG. Figure 1 .

[0049] In the first aspect, the present application embodiment provides a method for determining the real-time load rate of a transformer, combining Figure 1 , including six steps from S101 to S106:

[0050] S101: Obtain the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer.

[0051] S102: Determine a calculation method for the real-time load rate of the transformer according to the definition of the real-time load rate of the transformer, the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer.

[0052] Specifically, in the embodiment of the present application, the real-time load rate of the transformer is defined as: at a certain moment, the ratio of the real-time apparent power S output by the transformer to the rated capacity SN of the transformer, that is, S / SN; the calculation formula of the real-time apparent power of the transformer is: S=1.732*U(real-time voltage on the low-voltage side of the transformer)*I(real-time total current on the low-voltage side; the calculation formula of the rated capacity of the transformer is SN=1.732*UN(rated voltage on the low-voltage side of the transformer)*IN(rated current on the low-voltage side of the transformer). Since the deviation between the real-time voltage and the rated voltage on the low-voltage side is negligible relative to the load rate, the calculation formula for the real-time load rate of the transformer can be converted to: S / SN=(1.732*U*I) / (1.732*UN*IN)=I / IN, that is, the real-time load rate of a transformer is the ratio of the real-time total current on the low-voltage side to the rated current of the transformer, that is, the calculation method of the real-time load rate of the transformer is determined by the above steps to be equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current on the low-voltage side of the transformer.

[0053] S103: Determine the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer.

[0054] S104: Determine the daily average load rate of the transformer according to the hourly average load rate of the transformer.

[0055] S105: Determine the monthly average load rate of the transformer according to the daily average load rate of the transformer.

[0056] S106: Determine the annual average load rate of the transformer according to the monthly average load rate of the transformer.

[0057] Specifically, in the embodiment of the present application, after determining the calculation method of the real-time load rate of the transformer, the average load rate of the transformer per hour, the average load rate of the transformer per day, the average load rate of the transformer per month, and the average load rate of the transformer per year are determined as described below.

[0058] Furthermore, the above method for determining the real-time load rate of the transformer also includes: displaying the change trend information of the average load rate of the transformer per hour, the average load rate of the transformer per day, the average load rate of the transformer per month and the average load rate of the transformer per year.

[0059] Specifically, in the embodiment of the present application, after determining the average load rate of the transformer per hour, determining the average load rate of the transformer per day, determining the average load rate of the transformer per month, and determining the average load rate of the transformer per year, the changing trend information of the average load rate of the transformer per hour, the average load rate of the transformer per day, the average load rate of the transformer per month, and the average load rate of the transformer per year is displayed. The designer can reasonably plan and allocate the loads for transformation and capacity increase based on the actual load rate of each transformer and the load rate time distribution curve, and determine the best transformer for each load.

[0060] Figure 2 The method for determining the real-time load rate of the transformer provided in the embodiment of the present application is shown in FIG. Figure 2 .

[0061] Furthermore, in the above method for determining the real-time load rate of the transformer, the average load rate of the transformer per hour is determined according to the calculation method of the real-time load rate of the transformer, combined with Figure 2 , including two steps S201 and S202:

[0062] S201: Determine the real-time total current on the low-voltage side of the transformer every hour.

[0063] S202: Obtain an average load rate of the transformer per hour according to the real-time total current of the transformer low-voltage side and the rated current of the transformer low-voltage side per hour.

[0064] Specifically, in the embodiment of the present application, the real-time total current on the low-voltage side can be obtained by collecting the real-time three-phase current values ​​of the power meter of the low-voltage side incoming cabinet, namely IA, IB, and IC, and taking the average value. The real-time load rate calculation method is equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current of the low-voltage side of the transformer to obtain the average load rate of the transformer per hour.

[0065] Furthermore, in the above method for determining the real-time load rate of the transformer, determining the average daily load rate of the transformer according to the average hourly load rate of the transformer includes:

[0066] The average load rate of the transformer per hour in a day is averaged to obtain the average load rate of the transformer per day.

[0067] Specifically, in the embodiment of the present application, after determining the daily average load rate of the transformer, the daily average load rate is averaged based on the average load rate of 24 hours.

[0068] Furthermore, in the above method for determining the real-time load rate of the transformer, determining the monthly average load rate of the transformer according to the daily average load rate of the transformer includes:

[0069] The average transformer load factor for each day in a month is averaged to obtain the average transformer load factor for each month.

[0070] Specifically, in the embodiment of the present application, the monthly average load rate of the transformer is averaged based on the daily average load rate of the transformer.

[0071] Furthermore, in the above method for determining the real-time load rate of the transformer, determining the annual average load rate of the transformer according to the monthly average load rate of the transformer includes:

[0072] The average transformer load factor per month in a year is averaged to obtain the average transformer load factor per year.

[0073] Specifically, in the embodiment of the present application, the annual average load rate of the transformer is averaged based on the monthly average load rate of the transformer.

[0074] Figure 3 The method for determining the real-time load rate of the transformer provided in the embodiment of the present application is shown in FIG. Figure 3 .

[0075] Furthermore, in the above method for determining the real-time load rate of the transformer, the real-time total current of the low-voltage side of the transformer per hour is determined, combined with Figure 3 , including four steps from S301 to S304:

[0076] S301: Obtain the three-phase current values ​​on the low-voltage side of the transformer.

[0077] S302: Calculate the average value of the three-phase current values ​​according to the three-phase current values ​​on the low voltage side.

[0078] S303: Divide each hour into N parts, and determine the maximum value of the average value of the three-phase current value in each of the N parts.

[0079] S304: taking the average value of the maximum value of the average value of each three-phase current value in N parts to obtain the real-time total current of the low-voltage side of the transformer per hour.

[0080] Specifically, in an embodiment of the present application, a data collector collects power meter data of a low-voltage side incoming cabinet in real time and sends it to a data server; after receiving the low-voltage side current values ​​IA, IB, and IC, the data server calculates the average value of the three as It, and then stores it in a database; a timed calculation task is started, and one hour is divided into N parts, such as 4 parts, and the maximum value of all It within every 15 minutes is calculated as Im; the average value of the 4 Ims in one hour is taken to obtain the average total current on the low-voltage side of the transformer within one hour.

[0081] Figure 4 Schematic diagram of a device for determining the real-time load rate of a transformer provided in an embodiment of the present application.

[0082] In a second aspect, an embodiment of the present application further provides a device for determining a real-time load rate of a transformer, comprising:

[0083] Acquisition module 401: used to acquire the real-time voltage of the transformer low-voltage side, the real-time total current of the transformer low-voltage side, the rated voltage of the transformer low-voltage side, and the rated current of the transformer low-voltage side;

[0084] The first determination module 402 is used to determine the calculation method of the real-time load rate of the transformer according to the definition of the real-time load rate of the transformer, the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side, the rated voltage on the low-voltage side of the transformer and the rated current on the low-voltage side of the transformer.

[0085] Specifically, in the embodiment of the present application, the real-time load rate of the transformer is defined as: at a certain moment, the ratio of the real-time apparent power S output by the transformer to the rated capacity SN of the transformer, that is, S / SN; the calculation formula of the real-time apparent power of the transformer is: S=1.732*U(real-time voltage on the low-voltage side of the transformer)*I(real-time total current on the low-voltage side; the calculation formula of the rated capacity of the transformer is SN=1.732*UN(rated voltage on the low-voltage side of the transformer)*IN(rated current on the low-voltage side of the transformer). Since the deviation between the real-time voltage and the rated voltage on the low-voltage side is negligible relative to the load rate, the calculation formula of the real-time load rate of the transformer can be converted to: S / SN=(1.732*U*I) / (1.732*UN*IN)=I / IN, that is, the real-time load rate of a transformer is the ratio of the real-time total current on the low-voltage side to the rated current of the transformer, that is, the calculation method of the real-time load rate of the transformer is determined by the acquisition module 401 and the first determination module 402 to be equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current on the low-voltage side of the transformer.

[0086] The second determination module 403 is used to determine the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer;

[0087] The third determination module 404 is used to determine the average daily load rate of the transformer according to the average hourly load rate of the transformer;

[0088] The fourth determination module 405 is used to determine the monthly average load rate of the transformer according to the daily average load rate of the transformer;

[0089] The fifth determining module 406 is configured to determine the annual average load rate of the transformer according to the monthly average load rate of the transformer.

[0090] Specifically, in the embodiment of the present application, after determining the calculation method of the real-time load rate of the transformer, the second determination module 403 determines the average load rate of the transformer per hour, the third determination module 404 determines the average load rate of the transformer per day, the fourth determination module 405 determines the average load rate of the transformer per month, and the fifth determination module 406 determines the average load rate of the transformer per year, which has been introduced above.

[0091] In a third aspect, an embodiment of the present application further provides an electronic device, including: a processor and a memory;

[0092] The processor is used to execute any of the above-mentioned methods for determining the real-time load rate of the transformer by calling the program or instruction stored in the memory.

[0093] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program or instruction, wherein the program or instruction enables a computer to execute any of the above-mentioned methods for determining the real-time load rate of a transformer.

[0094] Figure 5 It is a schematic block diagram of an electronic device provided by an embodiment of the present disclosure.

[0095] like Figure 5 As shown, the electronic device includes: at least one processor 501, at least one memory 502 and at least one communication interface 503. The various components in the electronic device are coupled together through a bus system 504. The communication interface 503 is used to transmit information between external devices. It can be understood that the bus system 504 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 504 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Figure 5 Various buses are labeled as bus system 504 .

[0096] It can be understood that the memory 502 in this embodiment can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.

[0097] In some implementations, the memory 502 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof: an operating system and application programs.

[0098] Among them, the operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application program includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. The program that implements any method of determining the real-time load rate of the transformer provided in the embodiment of the present application can be included in the application program.

[0099] In the embodiment of the present application, the processor 501 calls the program or instructions stored in the memory 502, specifically, the program or instructions stored in the application, and the processor 501 is used to execute the steps of each embodiment of the method for determining the real-time load rate of the transformer provided in the embodiment of the present application.

[0100] Obtain the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer;

[0101] The calculation method of the transformer real-time load rate is determined according to the definition of transformer real-time load rate, transformer low-voltage side real-time voltage, low-voltage side real-time total current, transformer low-voltage side rated voltage and transformer low-voltage side rated current;

[0102] Determine the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer;

[0103] Determine the average daily load rate of the transformer based on the average hourly load rate of the transformer;

[0104] Determine the monthly average load rate of the transformer based on the daily average load rate of the transformer;

[0105] Determine the annual average load rate of the transformer based on the monthly average load rate of the transformer;

[0106] Among them, the calculation method of the real-time load rate of the transformer is equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current on the low-voltage side of the transformer.

[0107] Any of the methods for determining the real-time load rate of the transformer provided in the embodiments of the present application can be applied to the processor 501, or implemented by the processor 501. The processor 501 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 501 or an instruction in the form of software. The above-mentioned processor 501 can be a general-purpose processor, a digital signal processor (DigitalSignal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0108] The steps of any method in the method for determining the real-time load rate of the transformer provided in the embodiment of the present application can be directly embodied as being executed by a hardware decoding processor, or being executed by a combination of hardware and software units in the decoding processor. The software unit can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the method for determining the real-time load rate of the transformer in combination with its hardware.

[0109] Those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present application and to form different embodiments.

[0110] Those skilled in the art will appreciate that the description of each embodiment has its own emphasis, and for parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0111] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for determining a real-time load rate of a transformer, characterized in that: include: Obtain the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer; A calculation method for determining the real-time load rate of the transformer according to the definition of the real-time load rate of the transformer, the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer; Determine the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer; Determining the average daily load rate of the transformer based on the average hourly load rate of the transformer; Determine the monthly average load rate of the transformer based on the daily average load rate of the transformer; Determine the annual average load rate of the transformer based on the monthly average load rate of the transformer; The calculation method of the transformer real-time load rate is equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current on the low-voltage side of the transformer; Determining the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer, including: determining the real-time total current of the low-voltage side of the transformer per hour; obtaining the average load rate of the transformer per hour according to the real-time total current of the low-voltage side of the transformer per hour and the rated current of the low-voltage side of the transformer; The method for determining the real-time total current of the low-voltage side of the transformer per hour includes: obtaining the three-phase current value of the low-voltage side of the transformer; calculating the average value of the three-phase current value according to the three-phase current value of the low-voltage side; dividing each hour into N parts, and determining the maximum value of the average value of the three-phase current value of each of the N parts; averaging the maximum value of the average value of the three-phase current value of each of the N parts to obtain the real-time total current of the low-voltage side of the transformer per hour.

2. The method for determining the real-time load rate of a transformer according to claim 1, characterized in that: The method further includes: displaying the change trend information of the average load rate of the transformer per hour, the average load rate of the transformer per day, the average load rate of the transformer per month, and the average load rate of the transformer per year.

3. The method for determining the real-time load rate of a transformer according to claim 1, characterized in that: Determine the average daily load rate of the transformer according to the average hourly load rate of the transformer, including: The average load rate of the transformer per hour in a day is averaged to obtain the average load rate of the transformer per day.

4. The method for determining the real-time load rate of a transformer according to claim 1, characterized in that: The monthly average load rate of the transformer is determined based on the daily average load rate of the transformer, including: The average transformer load factor for each day in a month is averaged to obtain the average transformer load factor for each month.

5. The method for determining the real-time load rate of a transformer according to claim 1, characterized in that: The annual average load rate of the transformer is determined based on the monthly average load rate of the transformer, including: The average transformer load factor per month in a year is averaged to obtain the average transformer load factor per year.

6. A device for determining the real-time load rate of a transformer, characterized in that: include: Acquisition module: used to obtain the real-time voltage on the low-voltage side of the transformer, the real-time total current on the low-voltage side of the transformer, the rated voltage on the low-voltage side of the transformer, and the rated current on the low-voltage side of the transformer; The first determination module is used to determine the calculation method of the real-time load rate of the transformer according to the definition of the real-time load rate of the transformer, the real-time voltage of the low-voltage side of the transformer, the real-time total current of the low-voltage side, the rated voltage of the low-voltage side of the transformer and the rated current of the low-voltage side of the transformer; The second determination module is used to determine the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer; A third determination module: used to determine the average daily load rate of the transformer according to the average hourly load rate of the transformer; A fourth determination module is used to determine the monthly average load rate of the transformer according to the daily average load rate of the transformer; A fifth determining module: used to determine the annual average load rate of the transformer according to the monthly average load rate of the transformer; The calculation method of the transformer real-time load rate is equal to the ratio of the real-time total current on the low-voltage side of the transformer to the rated current on the low-voltage side of the transformer; Determining the average load rate of the transformer per hour according to the calculation method of the real-time load rate of the transformer, including: determining the real-time total current of the low-voltage side of the transformer per hour; obtaining the average load rate of the transformer per hour according to the real-time total current of the low-voltage side of the transformer per hour and the rated current of the low-voltage side of the transformer; The method for determining the real-time total current of the low-voltage side of the transformer per hour includes: obtaining the three-phase current value of the low-voltage side of the transformer; calculating the average value of the three-phase current value according to the three-phase current value of the low-voltage side; dividing each hour into N parts, and determining the maximum value of the average value of the three-phase current value of each of the N parts; averaging the maximum value of the average value of the three-phase current value of each of the N parts to obtain the real-time total current of the low-voltage side of the transformer per hour.

7. An electronic device, characterized in that: include: Processor and memory; The processor is used to execute the method for determining the real-time load rate of the transformer as claimed in any one of claims 1 to 5 by calling the program or instruction stored in the memory.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute the method for determining the real-time load rate of a transformer as claimed in any one of claims 1 to 5.

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