Novel multifunctional measuring switch

Abstract

The utility model provides a novel multifunctional measuring switch. The novel multifunctional measuring switch comprises a core processing unit, an energy-taking power supply unit, a tripping circuit, a protection processor, a metering unit, a self-learning unit, a protection current transformer, a metering current transformer and a temperature sensor. According to the utility model, measurement of various electric energy data can be realized, and once abnormal conditions such as line short circuit, overhigh temperature or large current occur, tripping can be rapidly performed according to set parameters, so that line safety is effectively protected. Through a CAN interface and an RS485 interface, stable and reliable communication with various intelligent electric meters and other devices can be realized, and data interaction and system integration are facilitated. Local communication is realized by means of the Bluetooth and the WIFI module, so that a user can conveniently carry out operations such as equipment connection and data checking locally. And the dual-mode carrier wave module can communicate with a master station, so that the feasibility of remote data transmission and remote control is ensured, and the compatibility and manageability of the equipment in the electric power Internet of Things are improved.

Description

Technical Field

[0001] This utility model relates to the field of intelligent measurement switch technology, specifically a novel multifunctional measurement switch. Background Technology

[0002] In the field of intelligent measurement switch technology, traditional measurement switches often have relatively simple functions. In terms of energy metering, their accuracy may be limited, failing to meet the growing demand for precise energy data measurement. For example, they cannot comprehensively and accurately measure three-phase voltage, current, and active, reactive, and energy data for both connected and disconnected phases. Regarding protection functions, they may only provide simple overcurrent and overtemperature protection, lacking adaptability to complex line conditions and unable to flexibly protect the line based on various parameter settings. In terms of communication, they typically have only limited communication interfaces, hindering efficient communication with various devices and making it difficult to simultaneously support different communication methods with the master station, downstream devices, and local devices (such as smart meters). Therefore, it is necessary to develop a new type of multifunctional measurement switch to solve these problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a novel multifunctional measuring switch to overcome the shortcomings of the prior art described in the background.

[0004] To solve the above-mentioned technical problems, the embodiments of this utility model provide the following technical solutions:

[0005] A novel multifunctional measuring switch includes a core processing unit, a power supply unit, a trip circuit, a protection processor, a metering unit, a self-learning unit, a protection current transformer, a metering current transformer, and a temperature sensor. The trip circuit is connected to a three-phase power line. The power supply unit is connected to each phase of the three-phase power line at the front end of the trip circuit to convert the system power supply voltage. Each phase of the three-phase power line at the rear end of the trip circuit is equipped with a protection current transformer and a metering current transformer. Each phase of the three-phase power line at the front and rear ends of the trip circuit is also equipped with a temperature sensor. The output terminals of the protection current transformer and the temperature sensor are electrically connected to the protection processor. The output terminal of the metering current transformer is electrically connected to the metering unit. The metering unit is also connected to each phase of the three-phase power line at the rear end of the trip circuit to collect the three-phase voltage. The metering unit is communicatively connected to the self-learning unit. The protection processor, the metering unit, and the self-learning unit are all communicatively connected to the core processing unit.

[0006] Optionally, the power supply unit outputs DC voltages of 3.3V and 12V.

[0007] Optionally, the metering unit is model HT7627S.

[0008] Optionally, the core processing unit includes a core processor and a dual-mode carrier module, a Bluetooth module, a WIFI module, a memory, an encryption chip, a backup power supply module, and a communication module electrically connected to the core processor.

[0009] Optionally, the self-learning module is a processor chip based on a quad-core ARM Cortex-A7 core.

[0010] Optionally, the core processor is an N32H487ZEL7.

[0011] Optionally, the Bluetooth module is an HLK-B40 chip.

[0012] Optionally, the encryption chip is an SCCA3ZY chip.

[0013] Optionally, the protection processor is model N32G455.

[0014] Optionally, the communication module includes a CAN interface, a 485 communication interface, and a signal isolation module. The CAN interface and the 485 communication interface are electrically connected to the core processor through the signal isolation module.

[0015] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0016] This invention enables the measurement of three-phase voltage, three-phase current, active power in both connected and disconnected phases, reactive power in both connected and disconnected phases, and electrical energy in both connected and disconnected phases, providing comprehensive and accurate data support for power system monitoring and analysis. During power-on or normal operation, in the event of abnormal conditions such as line short circuits, overheating, or high current, it can quickly trip according to set parameters, effectively protecting line safety and preventing damage to electrical equipment and accidents. Through CAN and RS485 interfaces, it can achieve stable and reliable communication with various smart meters and other devices, facilitating data exchange and system integration. Local communication is achieved via Bluetooth and WIFI modules, allowing users to easily connect devices and view data locally. A dual-mode carrier module enables communication with the master station, ensuring the feasibility of remote data transmission and remote control, and improving the compatibility and manageability of the equipment in the power Internet of Things. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the novel multifunctional measuring switch control system of this utility model. Detailed Implementation

[0018] 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.

[0019] like Figure 1As shown, this utility model proposes a novel multifunctional measuring switch, including a core processing unit, a power supply unit, a tripping circuit, a protection processor, a metering unit, a self-learning unit, a protection current transformer, a metering current transformer, and a temperature sensor. The tripping circuit is connected to the three-phase power line. The power supply unit is connected to each phase of the three-phase power line at the front end of the tripping circuit to convert the system power supply voltage. Each phase of the three-phase power line at the rear end of the tripping circuit is equipped with a protection current transformer and a metering current transformer. Each phase of the three-phase power line at the front and rear ends of the tripping circuit is also equipped with a temperature sensor. The output terminals of the protection current transformer and the temperature sensor are electrically connected to the protection processor. The output terminal of the metering current transformer is electrically connected to the metering unit. The metering unit is also connected to each phase of the three-phase power line at the rear end of the tripping circuit to collect the three-phase voltage. The metering unit is communicatively connected to the self-learning unit. The protection processor, the metering unit, and the self-learning unit are all communicatively connected to the core processing unit.

[0020] The system protection unit consists of a protection processor, a protection current transformer, and a trip unit. When the circuit is short-circuited, overheated, or under high current during power-on or normal operation, the protection unit can trip according to the set parameters to protect the circuit.

[0021] The power supply unit generates two power supplies through the three-phase voltages UA, UB, UC, and N via an AC / CDC circuit: a system 3.3V and an isolated 12V.

[0022] The metering chip (model HT7627S) and the metering current transformer are used for energy metering. The metering chip receives the voltage divided by the three-phase voltage through a resistor, and the current induced by the metering current transformer is used to generate the voltage after passing through a sampling resistor. The metering chip processes the voltage and current signals to obtain voltage and current information, metering information, and fault alarm information, and then exchanges and uploads this information to the core processing unit.

[0023] The core processing unit includes a core processor and, electrically connected to the core processor, a dual-mode carrier module, a Bluetooth module, a Wi-Fi module, a memory, an encryption chip, a backup power supply module, and a communication module. The unit can communicate and exchange data with the master station or subordinate stations through these modules. The core processor is an N32H487ZEL7, the Bluetooth module is an HLK-B40 chip, the encryption chip is an SCCA3ZY chip, and the protection processor is an N32G455. The communication module includes a CAN interface, a RS-485 communication interface, and a signal isolation module. The CAN interface and RS-485 communication interface are electrically connected to the core processor through the signal isolation module.

[0024] The self-learning module is based on a quad-core ARM Cortex-A7 processor chip and can perform fault diagnosis through self-learning.

[0025] In summary, this utility model achieves electrical energy data measurement and metering functions through a metering chip, measuring three-phase voltages Ua, Ub, and Uc, three-phase currents IA, IB, and IC, active power P in both connected and disconnected phases, reactive power Q in both connected and disconnected phases, and electrical energy in both connected and disconnected phases, and can output waveform data. Protection circuits provide overcurrent, overtemperature, and overvoltage protection functions. Communication with various smart meters is achieved through CAN and RS485 interfaces, local communication is achieved through Bluetooth and WIFI, and a dual-mode carrier module enables communication with the master station. A self-learning module trains various load identification and fault diagnosis capabilities.

[0026] 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. A novel multifunctional measuring switch, characterized in that, The system includes a core processing unit, a power supply unit, a tripping circuit, a protection processor, a metering unit, a self-learning unit, a protection current transformer, a metering current transformer, and a temperature sensor. The tripping circuit is connected to the three-phase power line. The power supply unit is connected to each phase of the three-phase power line at the front end of the tripping circuit to convert the system power supply voltage. Each phase of the three-phase power line at the rear end of the tripping circuit is equipped with a protection current transformer and a metering current transformer. Each phase of the three-phase power line at the front and rear ends of the tripping circuit is also equipped with a temperature sensor. The output terminals of the protection current transformer and the temperature sensor are electrically connected to the protection processor. The output terminal of the metering current transformer is electrically connected to the metering unit. The metering unit is also connected to each phase of the three-phase power line at the rear end of the tripping circuit to collect the three-phase voltage. The metering unit is communicatively connected to the self-learning unit. The protection processor, the metering unit, and the self-learning unit are all communicatively connected to the core processing unit.

2. The novel multifunctional measuring switch according to claim 1, characterized in that, The power supply unit outputs DC 3.3V and 12V DC voltages.

3. The novel multifunctional measuring switch according to claim 1, characterized in that, The metering unit is model HT7627S.

4. The novel multifunctional measuring switch according to claim 1, characterized in that, The core processing unit includes a core processor and a dual-mode carrier module, a Bluetooth module, a WIFI module, a memory, an encryption chip, a backup power supply module, and a communication module electrically connected to the core processor.

5. The novel multifunctional measuring switch according to claim 1, characterized in that, The self-learning unit is a processor chip based on a quad-core ARM Cortex-A7 core.

6. The novel multifunctional measuring switch according to claim 4, characterized in that, The core processor is an N32H487ZEL7.

7. The novel multifunctional measuring switch according to claim 4, characterized in that, The Bluetooth module is an HLK-B40 chip.

8. The novel multifunctional measuring switch according to claim 4, characterized in that, The encryption chip is an SCCA3ZY chip.

9. The novel multifunctional measuring switch according to claim 4, characterized in that, The protection processor is model N32G455.

10. The novel multifunctional measuring switch according to claim 4, characterized in that, The communication module includes a CAN interface, a 485 communication interface, and a signal isolation module. The CAN interface and the 485 communication interface are electrically connected to the core processor through the signal isolation module.

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