A multi-path load control acquisition device and system

Abstract

The utility model discloses a kind of multi-path load control acquisition device and system, the device uses the architecture of master device and slave device cooperation, and master device includes main controller, main communication module, user display interface, first power module and main interface unit, and slave device includes slave controller, acquisition unit, slave communication module, second power module and slave interface unit.The utility model passes through the hardware architecture of master device and multiple slave device cooperation, effectively expands the controllable loop quantity of system, realizes the structural upgrading from limited single-point control to flexible scalable multi-path comprehensive control, and by setting acquisition unit, the real-time monitoring of power loop data can be realized, by electromagnetic drive circuit breaker electric operating mechanism, opening and closing operation can be completed within several milliseconds, solve the problem that prior art cannot carry out real-time monitoring to customer side multi-path load, the controllable loop quantity of negative control terminal ontology is insufficient and control response speed is slow.

Description

Technical Field

[0001] This utility model relates to the field of power system control technology, specifically to a multi-channel load control acquisition device and system. Background Technology

[0002] With the sustained and rapid development of the national economy, the power grid load is constantly increasing, especially during the peak summer electricity consumption period. Localized load shortages are common, posing a severe challenge to the safe and stable operation of the power grid. Against this backdrop, implementing orderly, phased power rationing for large industrial customers has become one of the effective means to quickly balance loads and ensure power grid stability. The load control terminal (hereinafter referred to as "load control terminal") is a key device for implementing this strategy, and its performance and functions directly affect the effectiveness of load management.

[0003] However, existing load control terminals based on 230MHz private wireless networks still have several limitations in practical applications: First, the system suffers from the inherent flaw of "separation of control and acquisition." The existing load switches on the customer side do not have load monitoring capabilities, preventing the control end from making flexible adjustments based on actual conditions. If load monitoring is required, additional energy meters must be installed, significantly increasing construction complexity and cost, and making on-site implementation extremely difficult.

[0004] Secondly, the system has significant shortcomings in scalability and response speed. On the one hand, the number of controllable circuits of the load control terminal is limited, making it difficult to cover the numerous low-voltage circuits that may exist on the customer side; on the other hand, the number of physical intervals (units) of the field load switch is insufficient, limiting the scale of its controllable circuits, and its mechanical tripping device operates slowly, failing to meet the rapid control requirements of less than 200 milliseconds.

[0005] The aforementioned limitations in data perception, system scale, and execution speed collectively lead to a rigid system architecture, making it unable to perform flexible and precise multi-path coordinated control based on actual load conditions, thereby restricting the potential of the power system in optimizing operation and saving energy.

[0006] In summary, the existing system has shortcomings in terms of structure, function and response capability, and cannot truly achieve "observable, measurable, adjustable and controllable" load distribution on the customer side. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a multi-channel load control acquisition device and system, which solves the problems that the existing power load control system cannot monitor multiple loads on the customer side in real time, the number of controllable loops of the load control terminal body is insufficient, and the control response speed is slow.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A multi-channel load control acquisition device includes a master device and multiple slave devices communicatively connected to the master device; The main device includes: The main controller is used to receive local operation commands from the user display interface or remote control commands from the main communication module and output control signals. The main communication module, connected to the main controller, is used to realize data interaction between the main device, the remote monitoring system, and the slave device; The user display interface is connected to the main controller and is used to display system status and power parameters, and to receive operation commands input by the user. The first power supply module is used to supply power to the main controller, the main communication module and the user display interface; The main interface unit, connected to the main controller, is used to connect to an external control terminal; The slave device includes: The controller is connected to the circuit breaker's electrical operating mechanism via an interface unit to drive the circuit breaker's electrical operating mechanism to perform circuit breaker opening or closing actions. The acquisition unit is connected to the slave controller and to the circuit breaker through the slave interface unit. It is used to acquire the current, voltage and power parameters of the power circuit and to acquire the status signal of the circuit breaker. The communication module is connected to the slave controller and the master communication module is used to connect the slave controller and the master controller. It is used to receive control signals from the master device and send power parameters and status signals collected by the acquisition unit to the master device. The interface unit connects to both the controller and the acquisition unit, and is also used to connect to external circuitry. The second power supply module is used to supply power to the controller, acquisition unit, and communication module.

[0009] Furthermore, the main communication module and the slave communication module include multiple communication interfaces, including at least one of LoRa interface, 4G / 5G interface, Bluetooth interface, Wi-Fi interface and RS-485 interface.

[0010] Furthermore, the main device also includes a high-speed data processing unit, which is connected to the main controller and adopts a multi-core processor architecture.

[0011] Furthermore, the inner surfaces of the main device and the slave device are covered with a high-permeability metal layer, and the internal circuits are equipped with multi-stage LC filter circuits and active filter circuits.

[0012] Furthermore, the circuit breaker operating mechanism is an electromagnetically driven circuit breaker operating mechanism.

[0013] A multi-channel load control and acquisition system, comprising: A central monitoring system; Multiple of the aforementioned multi-channel load control and acquisition devices; The devices are interconnected by a distributed collaborative network to share load data and control commands, thereby enabling collaborative management and control of the regional power grid.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model's multi-channel load control acquisition device, through a hardware architecture of a master device and multiple slave devices working together, effectively expands the number of controllable loops in the system, achieving a structural upgrade from limited single-point control to flexible and scalable multi-channel integrated control. Furthermore, the acquisition unit enables real-time monitoring of power circuit data; the master and slave devices communicate via master and slave communication modules using various communication interfaces (such as LoRa, 4G / 5G, RS-485, etc.), forming a stable and reliable data transmission channel and ensuring the system's communication reliability in complex industrial environments. The high-speed data processing unit added to the master device adopts a multi-core processor architecture, capable of processing power parameters uploaded from multiple slave devices in parallel, significantly improving the system's data processing capability and real-time response. In addition, the inner surface of the master and slave devices' casings is covered with a high-permeability metal layer, and the internal circuitry incorporates multi-stage LC filtering and active filtering circuits, structurally enhancing the system's anti-electromagnetic interference capability and ensuring the stability of acquisition and control signals in environments with strong interference. Furthermore, the circuit breaker's electrical operating mechanism adopts an electromagnetic drive structure, enabling it to complete opening and closing actions within milliseconds, thus achieving rapid and precise load control at the actuator level. Through the aforementioned series of structural optimizations, this invention constructs a multi-channel load control and acquisition device with strong scalability, reliable communication, rapid response, and strong anti-interference capabilities, providing a solid hardware foundation for real-time monitoring and rapid control of multiple loads on the customer side.

[0015] 2. This utility model also provides a multi-channel load control and acquisition system composed of multiple of the above-mentioned devices and a central monitoring system, realizing a leap from single-point control to regional collaboration. Through the constructed distributed collaborative network, the devices within the system break down information silos, achieving real-time sharing and intelligent analysis of load data and control commands within the region, which is beneficial to improving the overall operating efficiency and stability of the regional power system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the module connection relationship of the multi-channel load control acquisition device of this utility model; Figure 2This is a schematic diagram showing the connection relationship between the multi-channel load control acquisition device of this utility model and the circuit breaker and the circuit breaker operating mechanism; Figure 3 This is a schematic diagram showing the connection relationship between the interface units of the main device and the 230MHz terminal of this utility model; Figure 4 This is a schematic diagram showing the connection relationship of each module in the multi-channel load control and acquisition system of this utility model. Detailed Implementation

[0017] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will understand that the description herein is exemplary and not intended to limit the scope of protection of this utility model.

[0018] Example 1 This embodiment provides a multi-channel load control acquisition device, designed to expand and enhance the functionality of existing 230MHz load control terminals. As an independent functional expansion unit, this device is wired to the existing 230MHz terminal interface board in the field via a dedicated interface board, thereby receiving standard control commands from the power grid master station and forwarded by the 230MHz terminal.

[0019] The multi-channel load control acquisition device, such as Figure 1 As shown, it includes a master device and at least one slave device that is communicatively connected to the master device; The main device includes: The main controller receives local operation commands from the user display interface or remote control commands from the main communication module and outputs control signals. The main controller uses an ARM Cortex-M3 core with a Harvard architecture and a three-stage pipeline, resulting in high instruction execution efficiency. It operates at a maximum frequency of 72MHz and incorporates hardware multipliers and dividers, supporting single-cycle multiplication and division operations, enabling efficient completion of mathematical calculation tasks such as signal processing and algorithm computation. The main controller also features multiple low-power modes, including sleep, stop, and standby, which can intelligently switch according to system load. For example, during intermittent monitoring, the stop mode is activated, pausing kernel operation to reduce power consumption while maintaining the state of static random access memory (SRAM) and registers, ensuring rapid wake-up and recovery upon receiving external commands, achieving a balance between low power consumption and fast response.

[0020] The main communication module is connected to the main controller via an internal high-speed bus and is used to realize data interaction between the main device, the remote monitoring system, and the slave device; The user display interface is connected to the main controller via an internal high-speed bus. It is used to display the system status and power parameters in a graphical manner and to receive operation commands input by the user. The first power supply module is used to supply power to the main controller, the main communication module and the user display interface; The main interface unit, connected to the main controller, is used to connect to an external control terminal; The slave device includes: The controller, connected to the circuit breaker's electrical operating mechanism via an interface unit, is used to drive the circuit breaker's electrical operating mechanism to perform circuit breaker opening or closing actions based on received control signals; see [link / reference]. Figure 2 .

[0021] The acquisition unit is connected to the slave controller and to the circuit breaker through the slave interface unit. It is used to acquire the current, voltage and power parameters of the power circuit and the status signal of the circuit breaker. The acquisition unit can realize the synchronous perception of power parameters and switch status.

[0022] The communication module is connected to the slave controller via an internal high-speed bus, and the slave controller is connected to the master controller via the master communication module. It is used to receive control signals from the master device and send power parameters and status signals collected by the acquisition unit to the master device. The interface unit connects to both the controller and the acquisition unit, and is also used to connect to external circuitry. The second power module is used to supply power to the controller, the acquisition unit, and the communication module. In practical implementation, the main communication module and slave communication module use industrial-grade multi-mode communication chips, equipped with multiple communication interfaces, supporting various communication protocols and methods such as 4G / 5G, LoRa, RS-485, Bluetooth, and Wi-Fi. The optimal communication mode can be selected based on the on-site network environment to ensure stable and efficient data transmission with slave devices and other external devices. LoRa technology features long-distance communication, low power consumption, and strong anti-interference capabilities, achieving communication distances of several kilometers in open environments. 4G and 5G technologies are suitable for scenarios with extremely high power consumption requirements and a large number of connections, providing deep coverage. The RS-485 interface supports multi-node connections, with a maximum transmission rate of 115200bps. While ensuring data transmission speed, it also effectively reduces the bit error rate during signal transmission, ensuring accurate transmission of remote control commands and data.

[0023] In specific implementation, the main device also includes a high-speed data processing unit. The high-speed data processing unit is connected to the main controller through an internal high-speed bus. The high-speed data processing unit adopts a multi-core processor architecture and is specifically used to process real-time power data uploaded from multiple slave devices in parallel and submit the results to the main controller, which greatly reduces the data processing burden of the main controller.

[0024] In practical implementation, both the master and slave devices are housed within independent engineering plastic housings. These housings offer excellent impact resistance, dustproofing, and waterproofing, effectively protecting internal components and extending their lifespan. The device employs a highly integrated design, compactly arranging key components such as the main control chip, communication module, and display unit within the housing. This not only shortens the internal signal transmission path and reduces external interference but also significantly improves system stability and reliability. This design simplifies the overall structure, supporting various installation methods such as wall mounting, embedded mounting, or rack mounting. It can be flexibly deployed in different scenarios such as industrial plants and commercial complexes, greatly reducing installation complexity and time costs. Furthermore, the modular construction facilitates quick location and replacement of faulty components during routine maintenance, thereby reducing downtime and improving system availability. The inner surface of the housing is covered with a high-permeability metal shielding layer, and the internal circuitry incorporates multi-stage LC filtering and active filtering circuits, effectively suppressing complex electromagnetic interference in the field and ensuring stable operation of the core control unit. The LC filtering circuit effectively filters out interference signals of specific frequencies, while the active filtering circuit detects and cancels dynamically changing interference in real time, ensuring the stability of the acquired control signals.

[0025] In specific implementation, the circuit breaker operating mechanism is an electromagnetically driven circuit breaker operating mechanism, configured to complete the opening or closing action of the circuit breaker within milliseconds after receiving a control signal. The electromagnetic drive mechanism has high response characteristics, ensuring rapid control.

[0026] In practice, the user display interface uses a high-resolution LCD touchscreen to graphically display the system's total power, current and voltage of each circuit, communication link status, and operation records in real time. Operators can directly perform local control operations, such as setting parameters, viewing historical data, and switching display pages, via the touchscreen or buttons. This allows users to quickly understand the system status, reduces operational difficulty, and improves user experience and operational efficiency.

[0027] The hardware connection of the device is based on the modular concept. The master and slave devices are connected through a high-speed bus and physical and protocol interfaces are reserved to ensure low-latency transmission and future system scalability.

[0028] In practice, the main device is directly connected to 220V AC mains power, while its internal main controller, main communication module, and other electronic circuits require low-voltage DC power. Therefore, the first power module uses an AC / DC power module to convert the 220V AC power into the stable DC power required by the device. For safety reasons, the slave devices are directly connected to 24V DC input. Since the operating voltages of their internal slave controllers, acquisition units, and other circuits are different, the second power module uses a DC / DC power module to further convert and stabilize the 24V DC input into the specific DC voltage required by each unit.

[0029] In specific implementation, the external control terminal is a 230MHz terminal, and the main interface unit of the main device and the 230MHz terminal interface unit are connected to their respective interfaces via a wired connection, as follows: Figure 3 As shown. This connection is key to integrating this device into the existing load control system. It enables the main equipment to receive standard commands (such as one to four rounds of remote control, or even more rounds of remote control) from the power grid master station and forwarded by the 230MHz terminal, and to upload the rich status information collected by this device back to the master station.

[0030] The specific interface mappings and functions are as follows: Power interface: The main device and the 230MHz terminal are respectively connected to a 220V power supply to provide working power for the main device and the terminal and ensure their stable operation.

[0031] Remote control interface: This is the command input channel for this device. The master device receives remote opening and closing commands forwarded by the 230MHz terminal through this interface. These traditional cycle commands will be parsed by the main controller and converted into precise control signals for multiple internal slave devices and their circuit breakers.

[0032] Remote signaling interface: This is the status upload channel for this device. The master device transmits the opening and closing status signals (such as "open" and "closed") of the associated circuit breakers from each slave device as standard remote signaling signals to the 230MHz terminal through this interface, and then transmits them back to the master station, realizing centralized monitoring of the status of multiple circuit breakers.

[0033] Pulse Interface: Collects power consumption-related pulse signals from the main equipment, serving as the basic data source for load monitoring and electricity billing.

[0034] RS-485 interface: It acquires detailed electrical parameters such as voltage, current, power, and power consumption uploaded by the master device through the RS485 bus, providing the core data foundation for the system to achieve precise load control and strategy optimization.

[0035] By connecting the above devices, this utility model device effectively expands the functionality of the traditional 230MHz terminal and solves the problems of existing power load control systems being unable to monitor multiple loads on the customer side in real time, insufficient number of controllable loops in the load control terminal body, and slow control response speed.

[0036] Example 2: like Figure 4As shown, this embodiment provides a multi-channel load control and acquisition system. This system consists of a central monitoring system and multiple devices (site 1, site 2...site N) distributed within a regional power grid (such as an industrial park) as described in Embodiment 1. Users can remotely monitor the operating status of power equipment at multiple distributed sites in real time and view detailed power parameters and other information through the management platform of the central monitoring system. Management personnel can remotely issue control commands, such as remotely switching equipment on and off, to achieve centralized management. This remote monitoring and management mode not only saves labor costs but also enables rapid response to power system faults, timely handling of abnormal situations, prevention of fault escalation, and improved convenience and efficiency of power system management.

[0037] The main equipment at each site communicates with each other via their 4G communication modules to form a distributed collaborative network. Based on an agreed-upon communication protocol, this network shares information such as real-time total load and critical circuit status, breaking down information silos and enabling real-time sharing and intelligent analysis of load data and control commands within the region. This is beneficial for improving the overall operational efficiency and stability of the regional power system.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A multi-channel load control acquisition device, characterized in that, It includes a master device and multiple slave devices that are communicatively connected to the master device; The main device includes: The main controller is used to receive local operation commands from the user display interface or remote control commands from the main communication module and output control signals. The main communication module, connected to the main controller, is used to realize data interaction between the main device, the remote monitoring system, and the slave device; The user display interface is connected to the main controller and is used to display system status and power parameters, and to receive operation commands input by the user. The first power supply module is used to supply power to the main controller, the main communication module and the user display interface; The main interface unit, connected to the main controller, is used to connect to an external control terminal; The slave device includes: The controller is connected to the circuit breaker's electrical operating mechanism via an interface unit to drive the circuit breaker's electrical operating mechanism to perform circuit breaker opening or closing actions. The acquisition unit is connected to the slave controller and to the circuit breaker through the slave interface unit. It is used to acquire the current, voltage and power parameters of the power circuit and to acquire the status signal of the circuit breaker. The communication module is connected to the slave controller and the master communication module is used to connect the slave controller and the master controller. It is used to receive control signals from the master device and send power parameters and status signals collected by the acquisition unit to the master device. The interface unit connects to both the controller and the acquisition unit, and is also used to connect to external circuitry. The second power supply module is used to supply power to the controller, acquisition unit, and communication module.

2. The multi-channel load control acquisition device according to claim 1, characterized in that, The main communication module and the slave communication module include multiple communication interfaces, including at least one of LoRa interface, 4G / 5G interface, Bluetooth interface, Wi-Fi interface and RS-485 interface.

3. The multi-channel load control acquisition device according to claim 1, characterized in that, The main device also includes a high-speed data processing unit, which is connected to the main controller and adopts a multi-core processor architecture.

4. The multi-channel load control acquisition device according to claim 1, characterized in that, The inner surfaces of the main and slave devices are covered with a high-permeability metal layer, and the internal circuits are equipped with multi-stage LC filter circuits and active filter circuits.

5. The multi-channel load control acquisition device according to claim 1, characterized in that, The circuit breaker operating mechanism is an electromagnetically driven circuit breaker operating mechanism.

6. A multi-channel load control acquisition system, characterized in that, include: A central monitoring system; Multiple multi-channel load control acquisition devices as described in any one of claims 1 to 5; The devices are interconnected by a distributed collaborative network to share load data and control commands, thereby enabling collaborative management and control of the regional power grid.

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