Electrical data acquisition system based on measurement switch

Abstract

The utility model provides an electrical data acquisition system based on a measurement switch. The electrical data acquisition system comprises an intelligent circuit breaker arranged on a branch box, and an intelligent measurement switch, a plurality of single-phase ammeters and a plurality of digital miniature circuit breakers which are arranged in an ammeter box, the intelligent circuit breaker is connected with a plurality of intelligent measuring switches; the intelligent measurement switch is electrically connected with the plurality of single-phase ammeters, the plurality of single-phase ammeters and the plurality of digital miniature circuit breakers are correspondingly and electrically connected, and the intelligent measurement switch is provided with an intelligent measurement module; and the plurality of intelligent measurement switches are also in wireless communication connection with the intelligent terminal. According to the utility model, a plurality of communication units are arranged, so that the data transmission requirements of different scenes and distances can be met, the data can be timely and reliably transmitted to equipment such as an intelligent circuit breaker and an intelligent terminal, and remote monitoring and centralized management are realized. Meanwhile, the ESAM encryption unit prevents leakage and tampering of user electricity consumption information and power grid key parameters, and maintains safe and stable operation of a power system and user rights and interests.

Description

Technical Field

[0001] This utility model relates to the field of electrical energy data acquisition technology, specifically an electrical data acquisition system based on a measuring switch. Background Technology

[0002] In the current field of electrical data acquisition, traditional acquisition systems face many serious problems. With the continuous development of power systems and the increasing demand from users for refined management of power data, higher requirements are being placed on the accuracy, real-time performance, security, and comprehensiveness of electrical data acquisition.

[0003] Traditional data collection methods often rely on relatively simple electricity meter readings and basic communication methods. Electricity meters have limited functionality, providing only limited energy measurement data and failing to meet the comprehensive and accurate measurement needs of multiple parameters such as voltage, current, and power factor. This makes it difficult to achieve comprehensive monitoring and analysis of the power system's operating status. In terms of communication, low-speed and unstable transmission methods are often used, such as traditional serial communication. This results in low data transmission rates, susceptibility to interference, high data transmission delays, and high packet loss rates, making it impossible to achieve fast and reliable data uploads and remote monitoring.

[0004] Moreover, there are serious deficiencies in data security. Electricity data involves user privacy and power grid operation security, but traditional acquisition systems lack effective encryption and secure storage mechanisms. User electricity consumption information and key power grid parameters are vulnerable to illegal theft and tampering, seriously threatening the stable operation of the power system and user rights.

[0005] Furthermore, its ability to monitor and protect against circuit faults is limited. When faced with common circuit faults such as overloads and short circuits, it cannot provide timely and effective early warnings or quickly disconnect the circuit, easily leading to electrical fires and other safety accidents, causing significant losses to users' lives and property and to power facilities.

[0006] In conclusion, it is urgent to develop a new type of electrical data acquisition system with multifunctionality, high reliability, strong security, and efficient communication capabilities to meet the development needs of the modern power industry and ensure the safe and stable operation of the power system and the electricity safety of users. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an electrical data acquisition system based on a measuring switch, so as to overcome the shortcomings of the prior art described in the background.

[0008] To solve the above-mentioned technical problems, the embodiments of this utility model provide the following technical solutions:

[0009] An electrical data acquisition system based on a measuring switch includes an intelligent circuit breaker installed on a branch box, and an intelligent measuring switch, multiple single-phase meters, and multiple digital miniature circuit breakers installed in a meter box.

[0010] The intelligent circuit breaker is connected to multiple intelligent measuring switches.

[0011] The intelligent measurement switch is electrically connected to multiple single-phase electricity meters, and the multiple single-phase electricity meters and multiple digital miniature circuit breakers are correspondingly electrically connected. The intelligent measurement module is provided on the intelligent measurement switch.

[0012] The multiple intelligent measurement switches are also wirelessly connected to the intelligent terminal.

[0013] Preferably, the intelligent measurement module includes a microprocessor and a metering unit electrically connected to the microprocessor, an HPLC communication unit, an RS485 communication unit, a Bluetooth communication unit, an ESAM encryption unit, a voltage / current acquisition unit, a field alarm unit, a line protection unit, a storage unit, and a 4G / 5G wireless communication module. The voltage / current acquisition unit is electrically connected to the metering unit.

[0014] Preferably, the metering unit is model ATT7022.

[0015] Preferably, the ESAM encryption unit adopts the State Grid object-oriented ESAM chip.

[0016] Preferably, the on-site alarm unit is an audible and visual alarm.

[0017] Preferably, the line protection unit is an electronic trip unit.

[0018] Preferably, the microprocessor is an STM32 series microcontroller.

[0019] Preferably, the storage unit adopts a combination of three types of memory: FRAM, EEPROM, and NorFlash.

[0020] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0021] 1. This utility model is equipped with multiple communication units, including HPLC, RS485, Bluetooth, and 4G / 5G wireless communication modules, to meet data transmission needs in different scenarios and at different distances. This ensures timely and reliable data transmission to devices such as smart circuit breakers and smart terminals, enabling remote monitoring and centralized management. Simultaneously, the ESAM encryption unit uses a State Grid ESAM chip to ensure data storage security, preventing the leakage and tampering of user electricity information and key power grid parameters, thus maintaining the safe and stable operation of the power system and protecting user rights.

[0022] 2. The electronic trip unit of the line protection unit of this utility model can effectively monitor circuit faults and quickly cut off the circuit when overload or short circuit conditions are met, preventing the fault from spreading and protecting electrical equipment. The audible and visual alarm of the on-site alarm unit can promptly issue an alarm when voltage or current is abnormal, reminding staff to handle the situation, reducing the risk of safety accidents, and ensuring the safety of power facilities and the lives and property of users.

[0023] 3. This utility model organically combines intelligent circuit breakers, intelligent measuring switches, single-phase meters, and digital miniature circuit breakers. Through the intelligent measuring module, it realizes the integration of multiple functions such as data acquisition, communication, protection, and storage, which meets the needs of the modern power industry for multifunctional, highly reliable, and highly adaptable electrical data acquisition systems. Attached Figure Description

[0024] Figure 1 This is a block diagram illustrating the principle of the electrical data acquisition system based on a measuring switch according to this utility model.

[0025] Figure 2 This is a block diagram illustrating the principle of the intelligent measurement module in the electrical data acquisition system based on a measurement switch according to this utility model.

[0026] Figure 3 This is a circuit diagram of the voltage / current acquisition unit of the electrical data acquisition system based on a measuring switch according to this utility model. Detailed Implementation

[0027] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0028] like Figure 1 As shown, this utility model proposes an electrical data acquisition system based on a measuring switch, including an intelligent circuit breaker 4 installed on a branch box 3, and an intelligent measuring switch 6, multiple single-phase meters 7, and multiple digital miniature circuit breakers 8 installed in a meter box.

[0029] The intelligent circuit breaker 4 connects to multiple intelligent measuring switches 6;

[0030] The intelligent measurement switch 6 is electrically connected to multiple single-phase meters 7, and the multiple single-phase meters 7 and multiple digital miniature circuit breakers 8 are correspondingly electrically connected. The intelligent measurement module 5 is installed on the intelligent measurement switch 6.

[0031] Multiple smart measurement switches 6 are also wirelessly connected to the smart terminal 9.

[0032] like Figure 2As shown, the intelligent measurement module 5 includes a microprocessor 51 and a measurement unit 52, an HPLC communication unit 53, an RS485 communication unit 54, a Bluetooth communication unit 55, an ESAM encryption unit 56, a voltage / current acquisition unit 57, a field alarm unit 58, a line protection unit 59, a storage unit 510, and a 4G / 5G wireless communication module 511, all electrically connected to the microprocessor 51. The voltage / current acquisition unit 57 is electrically connected to the measurement unit 52.

[0033] The metering unit 52 is model ATT7022. The ATT7022 can accurately measure various electrical energy parameters, including active power, reactive power, apparent power, power factor, RMS voltage, RMS current, and energy. Its voltage and current measurement accuracy reaches 0.2%, and its power measurement accuracy reaches 0.5%. The accuracy of its energy metering meets high-precision industrial standards and civilian needs under various conditions, ensuring the accuracy of power data. The chip has multiple measurement channels, allowing for simultaneous independent sampling and analysis of three-phase voltage and current.

[0034] The ESAM encryption unit 56 adopts the State Grid's object-oriented ESAM chip. The ESAM chip has a large-capacity secure storage area, which can reliably store various key data in the power system, such as user electricity consumption information, grid equipment parameters, encryption keys, etc., to prevent user electricity consumption information and key grid parameters from being illegally stolen or tampered with.

[0035] The on-site alarm unit 58 is an audible and visual alarm, used to provide on-site audible and visual alarms when abnormal voltage or current is detected.

[0036] The line protection unit 59 is an electronic trip unit. When a circuit fault meets the tripping conditions, such as an overload lasting for a set duration or a short circuit, the microprocessor sends a control signal to the tripping actuator. The tripping actuator is typically composed of a relay or thyristor. Upon receiving the signal, it quickly disconnects the circuit, protecting the electrical equipment and preventing the fault from escalating further.

[0037] The microprocessor 51 is an STM32 series microcontroller used for intelligent measurement data monitoring, data communication control, and circuit protection control.

[0038] The storage unit 510 combines three types of memory: FRAM, EEPROM, and NorFlash, making use of their complementary advantages.

[0039] The working principle of this utility model is as follows:

[0040] The measuring switch establishes communication with the single-phase electricity meter via 485 or Bluetooth communication, collects electrical energy data such as current, voltage, and power of the single-phase electricity meter connected below, and then uploads it to the intelligent circuit breaker 4 set on the branch box 3 via HPLC communication. The front end of the branch box 3 is connected to the switch cabinet 2, and the front end of the switch cabinet 2 is connected to the public transformer 1.

[0041] The measuring switch can also wirelessly transmit the collected 4G / 5G current, voltage, power and other electrical energy data to smart terminals such as mobile phones.

[0042] like Figure 3 The diagram shows the circuit schematic of the voltage / current acquisition unit 57. When a circuit fault reaches the tripping condition, such as an overload lasting for a set duration or a short circuit, the microprocessor sends a control signal to the tripping actuator. Upon receiving the signal, the actuator quickly cuts off the circuit, thus protecting the electrical equipment. Simultaneously, the on-site alarm unit 58 provides an audible and visual alarm to alert personnel to the abnormal circuit situation.

[0043] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An electrical data acquisition system based on a measuring switch, characterized in that, This includes a smart circuit breaker (4) installed on the branch box (3), and a smart measuring switch (6), multiple single-phase meters (7), and multiple digital miniature circuit breakers (8) installed in the meter box. The intelligent circuit breaker (4) is connected to multiple intelligent measuring switches (6). The intelligent measurement switch (6) is electrically connected to multiple single-phase meters (7), and the multiple single-phase meters (7) and multiple digital miniature circuit breakers (8) are electrically connected accordingly. The intelligent measurement switch (6) is equipped with an intelligent measurement module (5). The plurality of intelligent measurement switches (6) are also wirelessly connected to the intelligent terminal (9).

2. The electrical data acquisition system based on a measuring switch according to claim 1, characterized in that, The intelligent measurement module (5) includes a microprocessor (51) and a metering unit (52), an HPLC communication unit (53), an RS485 communication unit (54), a Bluetooth communication unit (55), an ESAM encryption unit (56), a voltage / current acquisition unit (57), a field alarm unit (58), a line protection unit (59), a storage unit (510), and a 4G / 5G wireless communication module (511) electrically connected to the microprocessor (51). The voltage / current acquisition unit (57) is electrically connected to the metering unit (52).

3. The electrical data acquisition system based on a measuring switch according to claim 2, characterized in that, The metering unit (52) is model ATT7022.

4. The electrical data acquisition system based on a measuring switch according to claim 2, characterized in that, The ESAM encryption unit (56) adopts the State Grid object-oriented ESAM chip.

5. The electrical data acquisition system based on a measuring switch according to claim 2, characterized in that, The on-site alarm unit (58) is an audible and visual alarm.

6. The electrical data acquisition system based on a measuring switch according to claim 2, characterized in that, The line protection unit (59) is an electronic trip unit.

7. The electrical data acquisition system based on a measuring switch according to claim 2, characterized in that, The microprocessor (51) is an STM32 series microcontroller.

8. The electrical data acquisition system based on a measuring switch according to claim 2, characterized in that, The storage unit (510) adopts a combination of three types of memory: FRAM, EEPROM and NorFlash.

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