Load management branching device

Abstract

The utility model discloses a load management branching device, comprising a master control circuit, a voltage and current sampling circuit, and a power supply control circuit, the master control circuit is electrically connected with the voltage and current sampling circuit used for reading electrical parameters of voltage, current, frequency, active power, reactive power, and electric energy; the voltage and current sampling circuit is electrically connected with a power supply control circuit used for controlling and outputting input voltage and current. The core function of the utility model lies in electric parameter data acquisition and opening control of a shunt circuit breaker. The device is rigorous in structure and is formed by precisely combining a plurality of modules such as a measuring unit, a data processing and storing unit and a communication unit. The system is excellent in performance, not only has accurate measurement capability, but also has an efficient information storage and processing mechanism, and can realize multiple functions of real-time monitoring, information interaction, remote signaling, remote control and the like. The load management branch device provides solid technical support for ensuring stable operation and efficient management of a power system.

Description

Technical Field

[0001] The utility model belongs to the technical field of load management, and particularly relates to a load management branch device. Background Technique

[0002] At present, under the new situation of the new power grid of the State Grid and the Southern Power Grid, for the large-scale special transformer user interactive demand-side management terminal (demand-side management interactive terminal) - the demand-side management terminal, through deploying the demand-side management terminal for large-scale special transformer users and completing the intelligent and refined control transformation, remote monitoring and intelligent control of the electrical equipment of industries with high power consumption in each production and manufacturing field are carried out, so that the special transformer users can actively participate in energy management, enabling the users to timely understand and master their own electricity consumption situations, and effectively improving the energy use efficiency and energy conservation.

[0003] By accessing the key energy-consuming circuits of the enterprise, comprehensive energy management and a friendly interface are provided, enabling the users to understand the entire electricity consumption process, detailed electricity consumption distribution and load attributes. According to the orderly power consumption instructions, during peak electricity consumption periods, the users can turn off some temporarily interruptible loads according to their own electricity consumption distribution, so as to achieve no impact or minimal impact on the production order.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structural and functional deficiencies, and a load management branch device is provided, with the expectation of achieving a more practical value purpose. Content of the Utility Model

[0005] The purpose of the utility model is to provide a load management branch device to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A load management branch device includes a main control circuit, a voltage and current sampling circuit, and a power supply control circuit. The main control circuit is electrically connected to the voltage and current sampling circuit for reading electrical parameters such as voltage, current, frequency, active power, reactive power, and electric energy. The voltage and current sampling circuit is electrically connected to the power supply control circuit for controlling the output of the input voltage and current.

[0007] The main control circuit is electrically connected to a data storage chip U3 for storing program codes and data, and both the voltage and current sampling circuit and the power supply control circuit are electrically connected to the main control circuit.

[0008] The voltage and current sampling circuit includes a sampling chip U1 and an auxiliary circuit, and the sampling chip U1 is electrically connected to the auxiliary circuit.

[0009] Preferably, the auxiliary circuit includes voltage transformers CT1, CT2, and CT3, and the voltage transformers CT1, CT2, and CT3 are electrically connected to the corresponding resistors and capacitors.

[0010] Preferably, pins 12 - 17 of the sampling chip U1 are electrically connected to the corresponding resistors, voltage transformers CT1, CT2, and CT3. Pins 4, 5, 7 - 10 of the sampling chip U1 are all electrically connected to current sampling resistors. Pins 25 and 26 of the sampling chip U1 are electrically connected to optocouplers U2 and U3. Resistors and capacitors are electrically connected to the optocouplers U2 and U3. Pins 25 and 26 of the sampling chip U1 are connected to pin 4 of U2 and U3.

[0011] Preferably, the main control circuit includes an MCU chip U5, a real - time clock module, an LCD liquid crystal display module, a Bluetooth communication module, an LED indicator and a key interaction module, a FLASH and an EEPROM storage module.

[0012] Preferably, pin 27 of the voltage and current sampling circuit is connected to pin 50 of the MCU chip U5, and the MCU chip U5 is electrically connected to the real - time clock module, the LCD liquid crystal display module, the Bluetooth communication module, the LED indicator, the key interaction module, the FLASH and the EEPROM storage module.

[0013] Preferably, the voltage and current sampling circuit includes a sampling module and a pulse output module. The power supply and control circuit includes an auxiliary power supply module, an LDO module, a 485 communication module, a DI input and a DO relay output module, and the auxiliary power supply module, the LDO module, the 485 communication module, and the DI input and DO relay output module are electrically connected to each other.

[0014] Compared with the prior art, the technical effects and advantages of the present utility model are as follows: For this load management branch device, under the combined electrical connection of the main control circuit, the voltage and current sampling circuit, and the power supply control circuit, and the electrical connection between the auxiliary power supply module, the LDO module, the 485 communication module, and the DI input and DO relay output module, pin 27 of the voltage and current sampling circuit is connected to pin 50 of the MCU chip U5, and the MCU chip U5 is electrically connected to the real - time clock module, the LCD liquid crystal display module, the Bluetooth communication module, the LED indicator, the key interaction module, the FLASH and the EEPROM storage module. With the mutual cooperation of the above - mentioned circuits and modules, this device can be applied to the large - scale special transformer user interactive demand - side management terminal, enabling special transformer users to actively participate in energy management, facilitating users to timely understand and master their own electricity consumption situations, and effectively improving energy use efficiency and energy conservation. Description of the Drawings

[0015] Figure 1 Schematic diagram of the frame structure of the present utility model;

[0016] Figure 2 Schematic circuit diagram of U5 in the voltage and current sampling circuit of the present utility model;

[0017] Figure 3 Schematic circuit diagram of the voltage and current sampling circuit of the present utility model;

[0018] Figure 4 Schematic diagram of the main control circuit structure of the present utility model;

[0019] Figure 5 Schematic circuit diagram of the power supply and control circuit of the present utility model. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0021] Please refer to Figures 1-5 , the present utility model provides a technical solution: a load management branch device, including a main control circuit, a voltage and current sampling circuit, and a power supply control circuit. The main control circuit uses an ARM4 chip. The main control circuit is connected to a 12864 liquid crystal display. The main control circuit is electrically connected to a voltage and current sampling circuit for reading electrical parameters such as voltage, current, frequency, active power, reactive power, and electric energy. The voltage and current sampling circuit is electrically connected to a power supply control circuit for controlling the output of the input voltage and current. The input voltage of the power supply and control circuit is at least AC65V and at most AC400V;

[0022] The main control circuit is electrically connected to a data storage chip U3 for storing program codes and data, and both the voltage and current sampling circuit and the power supply control circuit are electrically connected to the main control circuit.

[0023] The voltage and current sampling circuit includes a sampling chip U1 and an accessory circuit. The sampling chip U1 is electrically connected to the accessory circuit. The model of the sampling chip U1 in the voltage and current sampling circuit is RN8302B.

[0024] The auxiliary circuit includes voltage transformers CT1, CT2, and CT3. The models of voltage transformers CT1, CT2, and CT3 are HTCT-K10. Voltage transformers CT1, CT2, and CT3 are electrically connected to the corresponding resistors and capacitors. Pins 12-17 of the sampling chip U1 are electrically connected to the corresponding resistors, voltage transformers CT1, CT2, and CT3. Pins 4, 5, 7-10 of the sampling chip U1 are all electrically connected to current sampling resistors. Pins 25 and 26 of the sampling chip U1 are electrically connected to optocouplers U2 and U3. Resistors and capacitors are electrically connected to optocouplers U2 and U3. Pins 25 and 26 of the sampling chip U1 are connected to pin 4 of U2 and U3.

[0025] The main control circuit includes an MCU chip U5, a real-time clock module, an LCD liquid crystal display module, a Bluetooth communication module, an LED indicator and a button interaction module, a FLASH and an EEPROM storage module. Pin 27 of the voltage and current sampling circuit is connected to pin 50 of the MCU chip U5. The MCU chip U5 and the real-time clock module mainly provide accurate time and date information, helping the system to perform load scheduling, monitoring and recording power consumption data at specific times, which is helpful for analyzing load characteristics, optimizing power consumption strategies and implementing timing control, and helps with event recording to ensure the accuracy and reliability of data.

[0026] The LCD liquid crystal display module provides a visual interface for the real-time load status and monitoring data. By viewing the display screen, parameters such as current, voltage, and power of each branch can be checked, which is convenient for monitoring and managing power usage. At the same time, alarm information and system status can be displayed, helping operators to respond in a timely manner, thereby improving the overall management efficiency of the system.

[0027] The Bluetooth communication module enables the system to remotely monitor and control the load management system via Bluetooth, facilitating the acquisition of real-time data, setting of parameters and receiving of alarms, improving the flexibility of the system and the convenience of user operation, and supporting remote management and maintenance.

[0028] The LED indicator is used for indicating the operating state of the system, showing the working state of the device, normal operation, fault, standby; load status: indicating the load conditions of each branch through different colors or flashing modes, such as overload or fault warnings; operation feedback: providing real-time feedback when the user makes settings or controls, enhancing the intuitiveness of the operation; single fault troubleshooting: helping users quickly identify problems, facilitating maintenance and fault troubleshooting.

[0029] The button interaction module mainly includes: Parameter setting: Users can input and adjust the working parameters of the device through buttons, such as load setting values and alarm thresholds; Parameter setting: Users can input and adjust the working parameters of the device through buttons, such as load setting values and alarm thresholds; Status query: Users can quickly query the current status, historical data or alarm information of the device through buttons; Fault reset: When a fault occurs, the button interaction module can be used to reset the device and restore normal operation.

[0030] FLASH plays an important role in storage and configuration support, ensuring the stable and reliable operation of the system, and the EEPROM storage module provides a reliable data storage solution, enhancing the stability and maintainability of the system.

[0031] The voltage and current sampling circuit includes a sampling module for precise monitoring and data processing, and a pulse output module that plays an important role in data transmission and control triggering in the voltage and current sampling circuit. The power supply and control circuit includes an auxiliary power supply module, an LDO module, a 485 communication module, a DI input and a DO relay output module, and the auxiliary power supply module, the LDO module, the 485 communication module, the DI input and the DO relay output module are electrically connected. The power supply and control circuit plays the following roles in this device: Power supply: Provide stable power for the entire load management system to ensure the normal operation of each module; Voltage regulation: Through the voltage regulation circuit, ensure that the output voltage is constant and prevent voltage fluctuations from affecting the system; Control signal generation: Realize the monitoring and control of the load, generate corresponding control signals to adjust the working state of the device; Interface management: Coordinate the communication and data transmission between each module to ensure the smooth transmission of information.

[0032] Specifically, when in use, the voltage and current sampling circuit for reading electrical parameters such as voltage, current, frequency, active power, reactive power, and electric energy is electrically connected through the main control circuit. The voltage and current sampling circuit is electrically connected to the power supply control circuit for controlling the output of the input voltage and current. The main control circuit is electrically connected to the data storage chip U3 for storing program codes and data, and both the voltage and current sampling circuit and the power supply control circuit are electrically connected to the main control circuit. The voltage and current sampling circuit includes a sampling chip U1 and its affiliated circuit, and the sampling chip U1 is electrically connected to the affiliated circuit. This enables the device to be applied to the large-scale special transformer user interactive demand-side management terminal, enabling special transformer users to actively participate in energy management, enabling users to timely understand and master their own electricity consumption situations, and effectively improving energy use efficiency and energy conservation.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A load management branch device, comprising a main control circuit, a voltage and current sampling circuit, and a power control circuit, characterized in that: The main control circuit is electrically connected to a voltage and current sampling circuit for reading electrical parameters such as voltage, current, frequency, active power, reactive power, and electric energy. The voltage and current sampling circuit is electrically connected to a power control circuit for controlling the output of the input voltage and current. The main control circuit is electrically connected to a data storage chip U3 for storing program codes and data, and both the voltage and current sampling circuit and the power control circuit are electrically connected to the main control circuit. The voltage and current sampling circuit includes a sampling chip U1 and an accessory circuit, and the sampling chip U1 is electrically connected to the accessory circuit.

2. The load management branch device according to claim 1, wherein: The accessory circuit includes voltage transformers CT1, CT2, and CT3, and the voltage transformers CT1, CT2, and CT3 are electrically connected to the corresponding resistors and capacitors.

3. The load management branch device according to claim 2, characterized in that: Pins 12 - 17 of the sampling chip U1 are electrically connected to the corresponding resistors, voltage transformers CT1, CT2, and CT3. Pins 4, 5, 7 - 10 of the sampling chip U1 are all electrically connected to current sampling resistors. Pins 25 and 26 of the sampling chip U1 are electrically connected to optocouplers U2 and U3. Resistors and capacitors are electrically connected to the optocouplers U2 and U3, and pins 25 and 26 of the sampling chip U1 are connected to pin 4 of U2 and U3.

4. The load management branch device according to claim 1, characterized in that: The main control circuit includes an MCU chip U5, a real - time clock module, an LCD liquid crystal display module, a Bluetooth communication module, an LED indicator light, a key interaction module, a FLASH and EEPROM storage module.

5. The load management branch device according to claim 4, characterized in that: Pin 27 of the voltage and current sampling circuit is connected to pin 50 of the MCU chip U5, and the MCU chip U5 is electrically connected to the real - time clock module, the LCD liquid crystal display module, the Bluetooth communication module, the LED indicator light, the key interaction module, the FLASH, and the EEPROM storage module.

6. The load management branch device according to claim 1, characterized in that: The voltage and current sampling circuit includes a sampling module and a pulse output module. The power supply and control circuit includes an auxiliary power supply module, an LDO module, a 485 communication module, a DI input and DO relay output module, and the auxiliary power supply module, the LDO module, the 485 communication module, and the DI input and DO relay output module are electrically connected to each other.

Images