Power load monitoring and control terminal
Patent Information
- Application Number
- CN202522560109.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-02
AI Technical Summary
[0002]现有电力负荷测控终端普遍存在以下问题：数据采集精度不足，对复杂工况下的谐波、冲击负荷等特殊负荷响应滞后，测量误差大，且难以适配分布式光伏、储能设备接入后的多元负荷场景，仅支持单一电压等级或固定通信协议，调控方式被动，多为“采集-上报”的开环模式，缺乏实时闭环控制能力，无法快速应对负荷过载、电压波动等突发情况，传统终端抗电磁干扰能力弱，在工业现场复杂电磁环境下易出现数据丢包或误触发，模块化程度低，为此我们提出一种电力负荷测控终端
[0010]与现有技术相比，本实用新型能达到的有益效果是：1、通过高频采样与双算法滤波的设置，有效减少测量误差，提高谐波测量精度，适配复杂负荷场景，中央控制模块与闭环执行模块协同调控指令响应时间短，可快速应对负荷过载等突发情况，同时支持多电压等级、多通信协议，可接入分布式光伏、储能设备，适配工业、商业、居民等多元负荷场景。
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Figure CN224923464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power system automation technology, and in particular to a power load measurement and control terminal. Background Technology
[0002] Existing power load monitoring and control terminals generally suffer from the following problems: insufficient data acquisition accuracy, delayed response to special loads such as harmonics and impact loads under complex operating conditions, large measurement errors, and difficulty in adapting to diverse load scenarios after the connection of distributed photovoltaic and energy storage devices. They only support a single voltage level or fixed communication protocol, and the control method is passive, mostly an open-loop mode of "acquisition-reporting", lacking real-time closed-loop control capability. They cannot quickly respond to sudden situations such as load overload and voltage fluctuations. Traditional terminals have weak anti-electromagnetic interference capabilities and are prone to data packet loss or false triggering in complex electromagnetic environments in industrial sites. They also have low modularity. To address these issues, we propose a new power load monitoring and control terminal. Summary of the Invention
[0003] To overcome the shortcomings of existing technologies, this utility model provides a power load measurement and control terminal. Through high-frequency sampling and dual-algorithm filtering, it effectively reduces measurement errors, improves harmonic measurement accuracy, and is suitable for complex load scenarios. The central control module and closed-loop execution module have short response time for coordinated control commands, which can quickly respond to emergencies such as load overload. At the same time, it supports multiple voltage levels and multiple communication protocols, and can be connected to distributed photovoltaic and energy storage devices, making it suitable for diverse load scenarios such as industrial, commercial, and residential applications.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a power load monitoring and control terminal, comprising an electromagnetic shielding shell, a multi-channel data acquisition module, a signal processing module, a central control module, a multi-protocol communication module, a closed-loop execution module, and a redundant power supply module. The electromagnetic shielding shell is made of aluminum alloy and has a metal shielding mesh inside. The front of the electromagnetic shielding shell has a multi-interface panel, and the surface of the multi-interface panel is provided with current and voltage input interfaces, a power interface, and a communication interface. The multi-channel data acquisition module, signal processing module, central control module, multi-protocol communication module, closed-loop execution module, and redundant power supply module are integrated inside the electromagnetic shielding shell. The redundant power supply module comprises the multi-channel data acquisition module, signal processing module, central control module, and multi-protocol communication module. The system includes a closed-loop execution module power supply. The multi-channel data acquisition module comprises a voltage transformer, a current transformer, and a high-frequency sampling chip. The parameters acquired by the multi-channel data acquisition module include RMS value, harmonics, and power factor. The signal processing module integrates a Kalman filter unit and a wavelet denoising unit. The signal processing module uses dual algorithms to collaboratively process the acquired signals, filter out electromagnetic interference and high-frequency noise, and output a stable digital signal. The central control module uses an ARM Cortex-A9 processor. The multi-protocol communication module supports 5G, Ethernet, RS485, and IEC61850 protocols to achieve bidirectional data transmission with the power monitoring platform, energy storage equipment, and load switches. The closed-loop execution module includes a relay drive unit and a thyristor voltage regulation unit. The redundant power supply module is a dual-channel AC / DC power supply.
[0005] As a preferred technical solution of this utility model, the multi-channel data acquisition module supports simultaneous acquisition of six voltage channels and eight current channels. The multi-channel data acquisition module is adapted to voltage levels of 10-110kV. The central control module embeds a load prediction model, analyzes the acquired data in real time based on an LSTM neural network to determine the load operating status, and generates control commands. The load operating status includes normal, overload, and abnormal fluctuations. The closed-loop execution module receives commands from the central control module and performs load shedding, power regulation, and energy storage coordinated response operations before feeding back the execution results.
[0006] In a preferred embodiment of this utility model, the multi-channel data acquisition module is electrically connected to the signal processing module, the signal processing module is electrically connected to the central control module, the central control module is electrically connected to the closed-loop execution module, and the central control module is bidirectionally connected to the multi-protocol communication module.
[0007] As a preferred embodiment of this invention, the multi-protocol communication module has a built-in AES encryption unit to ensure data security.
[0008] As a preferred embodiment of this invention, the redundant power supply module supports hot backup switching and outputs a stable DC 12V / 24V voltage.
[0009] As a preferred embodiment of this utility model, a grounding port is provided on one side of the electromagnetic shielding shell, and the grounding resistance of the electromagnetic shielding shell is less than 4Ω.
[0010] Compared with the prior art, the beneficial effects that this utility model can achieve are: 1. By setting up high-frequency sampling and dual-algorithm filtering, the measurement error is effectively reduced, the harmonic measurement accuracy is improved, and it is suitable for complex load scenarios. The response time of the coordinated control command of the central control module and the closed-loop execution module is short, which can quickly respond to sudden situations such as load overload. At the same time, it supports multiple voltage levels and multiple communication protocols, and can be connected to distributed photovoltaic and energy storage equipment, adapting to diverse load scenarios such as industrial, commercial, and residential.
[0011] 2. Through the design of electromagnetic shielding shell and redundant power supply module, the data packet loss rate is reduced in complex electromagnetic environment, the fault-free operation time of the terminal is extended, and the anti-interference and stability are high. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall internal structure of this utility model.
[0013] Figure 2 This is a side view of the present invention.
[0014] Figure 3 This is a flowchart of the signal processing module of this utility model.
[0015] The components include: 1. Electromagnetic shielding shell; 2. Multi-channel data acquisition module; 3. Signal processing module; 4. Central control module; 5. Multi-protocol communication module; 6. Closed-loop execution module; 7. Redundant power supply module; 8. Multi-interface panel; 9. Current and voltage input interface; 10. Metal shielding mesh. Detailed Implementation
[0016] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation are all within the protection scope of this utility model without creative effort.
[0017] For an example, please refer to... Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a power load monitoring and control terminal, including an electromagnetic shielding shell 1, a multi-channel data acquisition module 2, a signal processing module 3, a central control module 4, a multi-protocol communication module 5, a closed-loop execution module 6, and a redundant power supply module 7. The electromagnetic shielding shell 1 is made of aluminum alloy and has a metal shielding mesh 10 inside. The front of the electromagnetic shielding shell 1 has a multi-interface panel 8, which has current and voltage input interfaces 9, a power interface, and a communication interface. The multi-channel data acquisition module 2, signal processing module 3, central control module 4, multi-protocol communication module 5, closed-loop execution module 6, and redundant power supply module 7 are integrated inside the electromagnetic shielding shell 1. The redundant power supply module 7 supplies power to the multi-channel data acquisition module 2, signal processing module 3, central control module 4, multi-protocol communication module 5, and closed-loop execution module 6. The multi-channel data acquisition module 2 includes a voltage transformer, a current transformer, and a high-frequency sampling chip. The parameters acquired by the multi-channel data acquisition module 2 include RMS value, harmonics, and power factor. The signal processing module 3 integrates a Kalman filter unit and a wavelet filter. The signal processing module 3 uses dual algorithms to collaboratively process the acquired signal, filtering out electromagnetic interference and high-frequency noise and outputting a stable digital signal. The central control module 4 uses an ARM Cortex-A9 processor. The multi-protocol communication module 5 supports 5G, Ethernet, RS485, and IEC61850 protocols to achieve bidirectional data transmission with the power monitoring platform, energy storage equipment, and load switches. The closed-loop execution module 6 includes a relay drive unit and a thyristor voltage regulation unit. The redundant power supply module 7 is a dual-channel AC / DC power supply. Through high-frequency sampling and dual-algorithm filtering, measurement errors are effectively reduced, harmonic measurement accuracy is improved, and it is suitable for complex load scenarios. The central control module 4 and the closed-loop execution module 6 have a short response time for collaborative control commands, which can quickly respond to sudden situations such as load overload. At the same time, it supports multiple voltage levels and multiple communication protocols, and can be connected to distributed photovoltaic and energy storage equipment. It is suitable for diverse load scenarios such as industrial, commercial, and residential applications. Through the design of the electromagnetic shielding shell 1 and the redundant power supply module 7, the data packet loss rate in complex electromagnetic environments is reduced, the terminal fault-free operation time is extended, and the anti-interference and stability are high.
[0018] like Figure 1 As shown, the multi-channel data acquisition module 2 supports simultaneous acquisition of six voltage channels and eight current channels. The multi-channel data acquisition module 2 is adapted to voltage levels of 10-110kV. The central control module 4 embeds a load prediction model, which analyzes the acquired data in real time based on the LSTM neural network to determine the load operating status and generate control commands. The load operating status includes normal, overload, and abnormal fluctuations. The closed-loop execution module 6 receives the commands from the central control module 4 and performs load shedding, power regulation, and energy storage coordinated response operations before feeding back the execution results.
[0019] like Figure 1As shown, the multi-channel data acquisition module 2 is electrically connected to the signal processing module 3, the signal processing module 3 is electrically connected to the central control module 4, the central control module 4 is electrically connected to the closed-loop execution module 6, and the central control module 4 is bidirectionally connected to the multi-protocol communication module 5.
[0020] like Figure 1 As shown, the multi-protocol communication module 5 has a built-in AES encryption unit to ensure data security.
[0021] like Figure 1 As shown, the redundant power supply module 7 supports hot backup switching and outputs a stable DC 12V / 24V voltage.
[0022] like Figure 1 As shown, a grounding port is provided on one side of the electromagnetic shielding shell 1, and the grounding resistance of the electromagnetic shielding shell 1 is less than 4Ω.
[0023] The specific workflow is as follows: The multi-channel data acquisition module 2 collects parameters such as line voltage and current in real time, converts analog signals into digital signals, and the digital signals are processed by Kalman filtering and wavelet denoising of the signal processing module 3 to filter out interference signals and output clean data to the central control module 4. The central control module 4 analyzes the data through an LSTM model to determine the load status: when the load exceeds 110% of the rated value, it is determined to be overload; when the voltage fluctuation exceeds ±5%, it is determined to be abnormal fluctuation. The central control module 4 generates control commands and sends them to the closed-loop execution module 6 through the multi-protocol communication module 5. When there is an overload, a relay is triggered to cut off non-critical loads; when the voltage is abnormal, the power is adjusted by the thyristor or the energy storage device is linked to replenish energy. The closed-loop execution module 6 feeds back the execution results to the central control module 4, and the central control module 4 reports to the power monitoring platform through the multi-protocol communication module 5 to complete the closed-loop control.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A power load monitoring and control terminal, comprising an electromagnetic shielding shell (1), a multi-channel data acquisition module (2), a signal processing module (3), a central control module (4), a multi-protocol communication module (5), a closed-loop execution module (6), and a redundant power supply module (7), characterized in that: The electromagnetic shielding shell (1) is made of aluminum alloy. A metal shielding mesh (10) is provided inside the electromagnetic shielding shell (1). A multi-interface panel (8) is provided on the front of the electromagnetic shielding shell (1). The surface of the multi-interface panel (8) is provided with a current and voltage input interface (9), a power interface, and a communication interface. The multi-channel data acquisition module (2), signal processing module (3), central control module (4), multi-protocol communication module (5), closed-loop execution module (6), and redundant power supply module (7) are integrated inside the electromagnetic shielding shell (1). The redundant power supply module (7) supplies power to the multi-channel data acquisition module (2), signal processing module (3), central control module (4), multi-protocol communication module (5), and closed-loop execution module (6). The multi-channel data acquisition module (2) includes... The voltage transformer, current transformer, and high-frequency sampling chip are included. The parameters collected by the multi-channel data acquisition module (2) include RMS value, harmonics, and power factor. The signal processing module (3) integrates a Kalman filter unit and a wavelet denoising unit. The signal processing module (3) filters out electromagnetic interference and high-frequency noise and outputs a stable digital signal by processing the acquired signal through dual algorithms. The central control module (4) adopts an ARM Cortex-A9 processor. The multi-protocol communication module (5) supports 5G, Ethernet, RS485, and IEC61850 protocols to realize bidirectional data transmission with the power monitoring platform, energy storage equipment, and load switch. The closed-loop execution module (6) includes a relay drive unit and a thyristor voltage regulation unit. The redundant power supply module (7) is a dual-channel AC / DC power supply.
2. The power load monitoring and control terminal according to claim 1, characterized in that: The multi-channel data acquisition module (2) supports simultaneous acquisition of six voltage channels and eight current channels. The multi-channel data acquisition module (2) is adapted to voltage levels of 10-110kV. The central control module (4) embeds a load prediction model, analyzes the acquired data in real time based on the LSTM neural network to determine the load operating status, and generates control instructions. The load operating status includes normal, overload, and abnormal fluctuations. The closed-loop execution module (6) receives instructions from the central control module (4) and performs load shedding, power regulation, and energy storage coordinated response operations before feeding back the execution results.
3. The power load monitoring and control terminal according to claim 1, characterized in that: The multi-channel data acquisition module (2) is electrically connected to the signal processing module (3), the signal processing module (3) is electrically connected to the central control module (4), the central control module (4) is electrically connected to the closed-loop execution module (6), and the central control module (4) is bidirectionally connected to the multi-protocol communication module (5).
4. A power load monitoring and control terminal according to claim 1, characterized in that: The multi-protocol communication module (5) has a built-in AES encryption unit to ensure data security.
5. A power load monitoring and control terminal according to claim 1, characterized in that: The redundant power supply module (7) supports hot backup switching and outputs a stable DC 12V / 24V voltage.
6. A power load monitoring and control terminal according to claim 1, characterized in that: The electromagnetic shielding shell (1) has a grounding port on one side, and the grounding resistance of the electromagnetic shielding shell (1) is less than 4Ω.