Controller for supervising energy consumption of transformer
By designing an energy consumption monitoring controller for transformers, the problem of intelligent monitoring and control of transformer energy consumption has been solved, enabling real-time monitoring, precise control, and remote management, thereby reducing energy consumption and operating costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional transformers lack effective real-time energy consumption monitoring methods and intelligent control strategies, leading to energy waste and increased power operation costs.
Design a controller that includes a power supply module, a data acquisition module, a data processing module, and a control execution module. Combined with sensors and a communication module, it can achieve real-time monitoring and intelligent control, and optimize transformer operating parameters through algorithms.
It enables real-time monitoring and precise control of transformer energy consumption, reduces energy consumption, improves energy utilization efficiency, reduces operating costs, and provides remote monitoring and fault early warning functions.
Smart Images
Figure CN223986298U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of power equipment monitoring and control, specifically relates to a controller for transformer energy consumption supervision. BACKGROUND
[0002] With the increasingly prominent global energy problem, energy saving in power systems becomes an important issue. As a widely used device in power systems, the energy consumption of transformers is of great concern. In the traditional operation process of transformers, there is a lack of effective real-time energy consumption monitoring means, and the energy consumption data of transformers under different working conditions cannot be obtained in a timely and accurate manner. At the same time, the control of transformer energy consumption also relies on artificial experience and regular maintenance, and lacks intelligent and automated control strategies, making it difficult to achieve precise regulation and control of transformer energy consumption. This not only leads to waste of energy, but also increases the cost of power operation. Therefore, it is of great practical significance to develop a device that can monitor and effectively control the energy consumption of transformers in real time. SUMMARY
[0003] The utility model aims at providing a controller for transformer energy consumption supervision to solve the problem of lack of effective real-time energy consumption monitoring means and control means in the operation process of transformers.
[0004] The technical scheme of the utility model is: a controller for transformer energy consumption supervision, comprising a controller body, a power module, a data acquisition module, a data processing module and a control execution module are arranged in the controller body, the power module is connected with the data acquisition module, the data processing module and the control execution module respectively, the data acquisition module, the data processing module and the control execution module are connected in sequence, and the control execution module is connected with the cooling system and the tap changer of the transformer.
[0005] A power connection terminal, a high-voltage side current connection terminal, a low-voltage side current connection terminal, a high-voltage side voltage connection terminal, a low-voltage side voltage connection terminal and a temperature connection terminal are arranged on the controller body, the power connection terminal is connected with the power module, and the high-voltage side current connection terminal, the low-voltage side current connection terminal, the high-voltage side voltage connection terminal and the low-voltage side voltage connection terminal are connected with the data acquisition module respectively.
[0006] As a further improvement of the utility model, a display screen is arranged on the controller body, and the display screen is connected with the power module and the control execution module respectively.
[0007] As a further improvement of the utility model, a plurality of operation buttons are arranged on the controller body, and the operation buttons are connected to the data processing module.
[0008] As a further improvement of the utility model, a communication module is further arranged in the controller body, and the communication module is connected with the power module and the data processing module respectively; a communication interface is further arranged on the controller body, and the communication module is connected to the remote monitoring center through the communication interface.
[0009] The utility model has the advantages of:
[0010] 1. Real-time monitoring is realized: the energy consumption data and the running state parameters of the transformer can be obtained in real time and accurately, and reliable data support is provided for the energy-saving management of the power system.
[0011] 2. Intelligent control of energy consumption: the running parameters of the transformer are automatically adjusted, the energy consumption of the transformer is effectively reduced, the energy utilization efficiency is improved, and the power operation cost is reduced.
[0012] 3. Remote monitoring and management: with the help of the communication module, remote real-time monitoring and control are realized, the power management personnel can understand the running condition of the transformer in time, and remote operation is carried out, so that the management efficiency is improved.
[0013] 4. Fault early warning function: potential fault hidden dangers existing in the transformer can be found in time through the evaluation of the running state, and early warning is issued in advance, so that the basis for equipment maintenance is provided, and the safe and stable operation of the power system is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the front structure schematic view of the utility model;
[0015] Figure 2 It is the back structure schematic view of the utility model;
[0016] Figure 3 It is the internal module connection relation diagram of the utility model;
[0017] Figure 4 It is the use method flow chart of the utility model.
[0018] In the drawing, 1 is the controller body; 2 is the display screen; 3 is the operation button; 4 is the power connection terminal; 5 is the high-voltage side current connection terminal; 6 is the high-voltage side voltage connection terminal; 7 is the communication interface; 8 is the low-voltage side current connection terminal; 9 is the low-voltage side voltage connection terminal; 10 is the power module; 11 is the data acquisition module; 12 is the data processing module; 13 is the control execution module; 14 is the communication module; 15 is the temperature connection terminal. DETAILED DESCRIPTION
[0019] The utility model will be further explained in detail in combination with the drawings and specific embodiments.
[0020] For example, Figures 1-3As shown, a controller for transformer energy consumption supervision, comprising a controller body 1, a power module 10, a data acquisition module 11, a data processing module 12 and a control execution module 13 are arranged in the controller body 1, the power module 10 is connected with the data acquisition module 11, the data processing module 12 and the control execution module 13 respectively, the data acquisition module 11, the data processing module 12 and the control execution module 13 are connected in sequence, and the control execution module 13 is connected with the cooling system and the tap changer of the transformer;
[0021] A power connection terminal 4, a high-voltage side current connection terminal 5, a low-voltage side current connection terminal 8, a high-voltage side voltage connection terminal 6, a low-voltage side voltage connection terminal 9 and a temperature connection terminal 15 are arranged on the back of the controller body 1, the power connection terminal 4 is connected with the power module 10, the high-voltage side current connection terminal 5, the low-voltage side current connection terminal 8, the high-voltage side voltage connection terminal 6 and the low-voltage side voltage connection terminal 9 are connected with the data acquisition module 11 respectively.
[0022] A liquid crystal display screen 2 is arranged on the front of the controller body 1, and the display screen 2 is connected with the power module 10 and the control execution module 13 respectively.
[0023] A plurality of operation buttons 3 are arranged on the front of the controller body 1, and the operation buttons 3 are connected to the data processing module 12.
[0024] A communication module 14 is further arranged in the controller body 1, and the communication module 14 is connected with the power module 10 and the data processing module 12 respectively; a communication interface 7 is further arranged on the back of the controller body 1, and the communication module 14 is connected to the remote monitoring center through the communication interface 7.
[0025] The data acquisition module 11 comprises a current sensor, a voltage sensor and a temperature sensor. The current sensor is used to collect the input and output currents of the transformer in real time, the voltage sensor collects the voltage across the transformer, and the temperature sensor monitors the key temperature parameters such as the oil temperature of the transformer. These sensors convert the collected analog signals into digital signals to provide a basis for subsequent data processing.
[0026] The data processing module 12 adopts a high-performance microprocessor, receives data from the data acquisition module 11, and performs analysis and calculation. According to the collected current and voltage data, the active power, the reactive power and the energy consumption value of the transformer are calculated, and at the same time, the running state of the transformer is evaluated in combination with the temperature parameters.
[0027] The communication module 14 has multiple communication interfaces 7, such as RS485 interface, Ethernet interface, and wireless communication modules (such as ZigBee, 4G / 5G, etc.). Through these communication interfaces 7, the data processing module 12 can transmit the collected and processed data to the remote monitoring center to realize remote real-time monitoring. At the same time, the control execution module 13 can also receive control commands from the remote monitoring center.
[0028] The control execution module 13 adjusts relevant parameters of the transformer based on the analysis results of the data processing module 12 and the instructions from the remote monitoring center. For example, it adjusts the transformer's turns ratio by controlling the transformer's tap changer to optimize the transformer's operating efficiency; or it controls the operation of the cooling system to improve the transformer's heat dissipation conditions, indirectly affecting the transformer's energy consumption.
[0029] Power module 10 provides a stable power supply for the entire controller. It adopts switching power supply technology to convert the input AC power into DC voltage suitable for the operation of each module, ensuring that the controller can operate stably under different power supply environments.
[0030] Usage instructions are as follows: Figure 4 As shown, it includes the following steps:
[0031] A. Connect the high-voltage side current terminal 5 to the high-voltage side current transformer of the transformer, connect the low-voltage side current terminal 8 to the low-voltage side current transformer of the transformer, connect the high-voltage side voltage terminal 6 to the high-voltage side voltage transformer of the transformer, and connect the low-voltage side voltage terminal 9 to the low-voltage side voltage transformer of the transformer; import the data from Tables 1 to 35 of the "Energy Efficiency Limits and Energy Efficiency Grades of Power Transformers" (GB20052-2024) into the data processing module 12; preset the energy efficiency grade control standard to level 2 in the data processing module 12.
[0032] B. Data acquisition module 11 collects the voltage of each phase on the high-voltage side of the transformer (VA, VB, VC), the current of each phase on the high-voltage side (IA, IB, IC), the voltage of each phase on the low-voltage side (vA, vB, vC), the current of each phase on the low-voltage side (iA, iB, iC), and temperature data in real time, with a sampling frequency of 500Hz.
[0033] C. Within one sampling period, the data processing module 12 calculates the transformer's input active power (P1), output active power (P2), output reactive power (Q2), and transformer load rate (β) based on the data collected by the data acquisition module 11 using the instantaneous power integration method:
[0034] In the formula, T is the sampling period;
[0035] ;
[0036] ;
[0037] In the formula, S is the apparent power of the transformer (kVA).
[0038] D. Data processing module 12 calculates 500 sets of active power loss (P loss) data within the sampling period based on the loss calculation formula:
[0039] In the formula, △P0 is the no-load loss and △Pk is the load loss.
[0040] This algorithm can adapt to changes in transformer power under different operating conditions, ensuring the accuracy of energy consumption calculation.
[0041] E. The multiple sets of loss data obtained in step D are used by the data processing module 12 to calculate the no-load loss and load loss using an array algorithm. 500 sets of data are collected within one sampling period of 1 / 500s, forming the data array as follows:
[0042] ,
[0043] Solving for:
[0044] ;
[0045] ,
[0046] Load loss changes with temperature, and data processing module 12 corrects the load loss based on temperature data:
[0047] In the formula, △Pk(t) is the corrected load loss, △Pk(75℃) is the original load loss (reference temperature is 75℃), and t is the transformer temperature (Fahrenheit).
[0048] F. Data processing module 12 determines the transformer's energy efficiency level in real time based on the transformer capacity, short-circuit impedance, and calculated no-load and load losses, combined with data from Tables 1 to 35 of the "Energy Efficiency Limits and Energy Efficiency Grades of Power Transformers" (GB20052-2024).
[0049] Level 1: Highest energy efficiency, lowest energy loss;
[0050] Level 2: Medium energy efficiency;
[0051] Level 3: Lowest energy efficiency, only meets the minimum requirements.
[0052] If the transformer's energy efficiency level is lower than the energy efficiency level control standard, the data processing module 12 sends a signal to the control execution module 13. The control execution module 13 controls the transformer's tap changer to adjust the transformer's turns ratio, thereby optimizing the transformer's operating efficiency; or the control execution module 13 controls and adjusts the transformer's cooling system to improve the transformer's heat dissipation conditions, indirectly affecting the transformer's energy consumption.
[0053] Meanwhile, the data processing module 12 sends the collected and processed data to the remote monitoring center through the communication module 14. Power management personnel can use the monitoring software in the remote monitoring center to view the transformer's energy consumption data, operating status parameters, and the execution status of control commands in real time. Management personnel can also send control commands to the control execution module 13 through the remote monitoring center to remotely operate the transformer.
[0054] G. The data processing module 12 displays the no-load loss, load loss, and transformer energy efficiency level on the display screen 2 through the control execution module 13. Multiple operation buttons 3 are for voltage, current, power consumption, and energy efficiency level; different parameters can be displayed by pressing different operation buttons 3.
[0055] This invention can monitor transformer energy consumption data in real time and accurately, and automatically adjust transformer operating parameters based on monitoring results, thereby achieving effective control of transformer energy consumption, reducing energy consumption, and improving the energy utilization efficiency of the power system.
[0056] This invention comprehensively considers parameters such as transformer current, voltage, and temperature to establish an operational status assessment model. Through real-time analysis of these parameters, it determines whether the transformer is operating normally and whether there is a potential risk of excessive energy consumption. Based on the operational status assessment results, intelligent control strategies, such as fuzzy control algorithms or neural network algorithms, are employed to automatically adjust the transformer's operating parameters. These algorithms can dynamically optimize the control strategy according to actual conditions, achieving precise control of transformer energy consumption.
Claims
1. A controller for transformer energy consumption monitoring, characterized by: The controller body (1) is provided with a power module (10), a data acquisition module (11), a data processing module (12) and a control execution module (13) therein, the power module (10) is connected with the data acquisition module (11), the data processing module (12) and the control execution module (13) respectively, the data acquisition module (11), the data processing module (12) and the control execution module (13) are connected in sequence, and the control execution module (13) is connected with the cooling system of the transformer and the tap switch; The controller body (1) is provided with a power connection terminal (4), a high-voltage side current connection terminal (5), a low-voltage side current connection terminal (8), a high-voltage side voltage connection terminal (6), a low-voltage side voltage connection terminal (9) and a temperature connection terminal (15), the power connection terminal (4) is connected with the power module (10), the high-voltage side current connection terminal (5), the low-voltage side current connection terminal (8), the high-voltage side voltage connection terminal (6) and the low-voltage side voltage connection terminal (9) are connected with the data acquisition module (11) respectively.
2. The controller for transformer energy consumption monitoring according to claim 1, wherein: The controller body (1) is provided with a display screen (2), and the display screen (2) is connected with the power module (10) and the control execution module (13) respectively.
3. The controller for transformer energy consumption monitoring according to claim 2, wherein: The controller body (1) is provided with a plurality of operation buttons (3), and the operation buttons (3) are connected to the data processing module (12).
4. The controller for transformer energy consumption monitoring according to any one of claims 1-3, characterized in that: The controller body (1) is further provided with a communication module (14), and the communication module (14) is connected with the power module (10) and the data processing module (12) respectively; the controller body (1) is further provided with a communication interface (7), and the communication module (14) is connected to the remote monitoring center through the communication interface (7).