Guide rail type electric energy meter with double-circuit power supply function

Abstract

The utility model discloses a guide rail type electric energy meter with a double-circuit power supply function, which relates to the technical field of guide rail type electric energy meters, and comprises a guide rail type electric energy meter main body, a power supply unit, a sampling unit, an MCU (Microprogrammed Control Unit), a display unit, a storage unit and a remote signaling / remote control unit, and the power supply unit, the sampling unit, the MCU, the display unit, the storage unit and the remote signaling / remote control unit are respectively connected with the main board, so that the problems that in the prior art, a guide rail type electric energy meter cannot continue to monitor the equipment state in real time after being powered off, and the states of multiple paths of equipment cannot be sensed, regulated and controlled at the same time are solved. Aiming at power state real-time sensing and monitoring and electric energy metering requirements of a power system, a communication industry, a building industry and the like, measurement, communication and control functions are integrated, a two-way switching power supply is built in, a 16-way switching state input state monitoring function and a 4-way control output function are realized, and the real-time sensing and control capability after new energy grid connection is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of guide rail type electric energy meters, and in particular relates to a guide rail type electric energy meter with a dual-circuit power supply function. Background Art

[0002] In recent years, as my country has accelerated the construction of a new power system dominated by renewable energy, there is an urgent need to improve the power system's flexible regulation capabilities across power sources, grids, demand, and energy storage to meet the requirements of large-scale renewable energy grid integration. As essential equipment for energy metering, information exchange, and real-time monitoring, rail-type electricity meters play a crucial role in improving the power system's regulation capabilities. Existing rail-type electricity meters are unable to provide dual power supply lines, and most only have a single-line telesignaling function, lacking multi-line control capabilities. This design has certain limitations for sensing and managing the diverse array of access devices required after large-scale renewable energy grid integration. Utility Model Content

[0003] To address these issues, this utility model proposes a rail-mounted energy meter with dual power supply functionality. This meter features a built-in dual switching power supply. If the meter lacks AC220V power, the DC24V power supply acts as the primary power source, enabling real-time monitoring of the operating status of connected switchgear, enabling uninterrupted, 24 / 7 monitoring. Furthermore, the device features 16-channel switching input status monitoring and 4-channel switch control outputs, allowing simultaneous connection to multiple switchgear devices for real-time sensing of their operating status, alarm output, and operational control.

[0004] The technical solution of the present utility model is as follows: a guide-rail type electric energy meter with a dual power supply function, the electric energy meter including a guide-rail type electric energy meter body, a power supply unit, a sampling unit, an MCU, a display unit, a storage unit and a telesignaling / remote control unit, a main board is provided in the guide-rail type electric energy meter body, and the power supply unit, sampling unit, MCU, display unit, storage unit and telesignaling / remote control unit are respectively connected to the main board.

[0005] Based on the above technical features, the purpose of this utility model is to provide a guide-rail type electricity meter with dual power supply function, so as to solve the problems in the prior art that the guide-rail type electricity meter cannot continue to monitor the equipment status in real time after power failure, and cannot realize the simultaneous perception and control of multiple equipment status. In response to the needs of real-time perception and monitoring of power status and electricity metering in power systems, communications industries, construction industries, etc., a new guide-rail type electricity meter is proposed, which integrates measurement, communication and control functions, has a built-in dual-channel switching power supply, and has 16-channel switch status input status monitoring function and 4-channel control output function, realizing the improvement of real-time perception and control capabilities after the new energy is connected to the grid.

[0006] As an improvement of the present invention, the power supply unit adopts DC24V as the main power supply and only supplies power to RS485 and DI / DO.

[0007] Based on the above technical features, the power supply unit is connected to the mainboard and adopts a built-in dual-channel switching power supply design to power the mainboard and RS485 / DI input respectively. DC24V is used as the main power supply to power only RS485 and DI / DO, which does not affect the metering function of the meter itself. AC220V is used as the auxiliary power supply to measure the real-time power consumption of the load.

[0008] As an improvement of the present invention, the sampling unit adopts a metering chip.

[0009] Based on the above technical features, the sampling unit is connected to the mainboard, and a metering chip is used to sample and process the voltage and current signals of the connected load device, which are analyzed and processed by the MCU to realize forward and reverse, peak and valley or four-quadrant electric energy calculation, and further output through the optical pulse interface.

[0010] As an improvement of the present invention, the remote signaling unit adopts 16-channel DI dry node input.

[0011] Based on the above technical features, the telesignaling unit is connected to the main board and adopts 16-channel DI dry node input. By converting the closing or opening of the relay contacts into a low level or high level and sending it to the electric energy meter telesignaling module, it can simultaneously monitor the alarm status, switch position or valve position and other status information of 16-channel equipment.

[0012] As an improvement of the present invention, the remote control unit adopts 4-way DO dry node output.

[0013] Based on the above technical features, the remote control unit is connected to the main board and adopts 4-way DO dry node output to realize the opening and closing function of regulating 4-way switching devices.

[0014] As an improvement of the present invention, the guide rail type electric energy meter further includes a communication unit, and the communication unit is connected to the main board.

[0015] Based on the above technical features, the communication unit is connected to the mainboard and has 4G communication function, which can realize remote data acquisition, remote control and remote upgrade functions; it has RS-485 communication function, realizes DL / T645-2007 and Modbus-RTU dual protocol adaptive function, and can be connected to the meter data acquisition equipment to realize real-time acquisition of meter measurement data and local upgrade function.

[0016] As an improvement of the present invention, the guide rail type electric energy meter further includes a display unit, and the display unit is connected to the main board.

[0017] Based on the above technical features, the display unit is connected to the main board to realize real-time display of load power metering data and display of the power meter equipment status information; in addition, it supports on-site button setting of the communication baud rate and the communication address of the power meter, and the parameter setting results can be intuitively viewed through the display unit.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a new type of guide-rail electric energy meter with a dual-power supply function, which realizes a dual-switch power supply design. Regardless of whether the AC220 power input of the electric energy meter is normal, the DC24V power supply can ensure that the guide-rail electric energy meter continuously monitors the operating status of the switch equipment and immediately executes the control instructions under abnormal conditions, thereby realizing the improvement of the real-time perception and control capabilities of the power acquisition system after the new energy is connected to the grid, and improving the reliability and intelligence of the power acquisition system. At the same time, the electric energy meter realizes real-time perception of the status of 16-channel DI switch inputs and remote control of 4-channel DO switch equipment, providing important support for the control of various types of switches or valve equipment after the new energy is connected to the grid. The 4G communication function can realize remote data collection, remote control and remote upgrade, and improve the on-site operation and maintenance management efficiency of power equipment. The RS485 communication channel realizes dual-protocol adaptive function, supports the access of multiple types of communication protocol equipment on site, and avoids the tediousness of manual parameter setting and debugging, saving labor costs. The rail-type electricity meter adopts a modular structural design and has the advantages of small size, easy installation, and easy networking. The module is integrated inside the device. The modular design makes it easy to network and is widely used in power assessment and monitoring in industrial enterprises, hotels, schools, and large public buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the working principle of the guide rail type electric energy meter with dual power supply function;

[0020] Figure 2 This is a schematic diagram of the 24V power supply and remote signaling terminals for a guide-rail type electric energy meter with dual power supply function.

[0021] List of accompanying drawings: power supply unit 1-1, sampling unit 1-2, MCU 1-3, display unit 1-4, storage unit 1-5, communication unit 1-6, telesignaling / remote control unit 1-7, 4-way DO switch terminal 2-1, 1-way 485 acquisition terminal 2-2, 24V power supply terminal 2-3, 16-way DI switch input terminal 2-4. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0023] Example: Figure 1 As shown, this embodiment is as follows: a DIN-rail type electric energy meter with dual power supply function. The electric energy meter has a built-in dual switching power supply. If the electric energy meter does not have AC220V power supply, DC24V serves as the main power supply to support real-time monitoring of the operating status of the switchgear connected to the electric energy meter, achieving all-weather uninterrupted monitoring. In addition, the device has 16-channel switch input status monitoring and 4-channel switch control output. It can be connected to multiple switchgear simultaneously to achieve real-time sensing of the operating status of multiple devices, output alarms, and operation control. The electric energy meter includes a DIN-rail type electric energy meter body, a power supply unit 1-1, a sampling unit 1-2, an MCU 1-3, a display unit 1-4, a storage unit 1-5, and a telesignaling / remote control unit 1-7. The DIN-rail type electric energy meter body is provided with a mainboard. The power supply unit 1-1, sampling unit 1-2, MCU 1-3, display unit 1-4, storage unit 1-5, and telesignaling / remote control unit 1-7 are all connected to the mainboard.

[0024] The purpose of this embodiment is to provide a guide-rail type electric energy meter with a dual power supply function, so as to solve the problem in the prior art that the guide-rail type electric energy meter cannot continue to monitor the device status in real time after power failure, and cannot realize the simultaneous perception and regulation of multiple device statuses.

[0025] like Figure 2 As shown in the figure, 2-1 indicates 4-way DO switch terminal; 2-2 indicates 1-way 485 acquisition terminal; 2-3 indicates 24V power supply terminal; 2-4 indicates 16-way DI switch input terminal.

[0026] Furthermore, the power supply unit 1-1 uses DC24V as the main power source, powering only the RS485 and DI / DO inputs. Connected to the mainboard, the power supply unit 1-1 utilizes a built-in dual-switch power supply design, powering the mainboard and RS485 / DI inputs separately. Using DC24V as the main power source only powers the RS485 and DI / DO inputs, without affecting the meter's metering function. AC220V is the auxiliary power source, used to measure the load's real-time energy consumption.

[0027] Furthermore, the sampling unit 1-2 uses a metering chip. The sampling unit 1-2 is connected to the mainboard and uses the metering chip to sample and process the voltage and current signals of the connected load device. The MCU 1-3 performs analysis and processing to realize forward and reverse, peak and valley, or four-quadrant electric energy calculation, and further outputs it through the optical pulse interface.

[0028] Furthermore, the remote signaling unit uses 16-channel DI dry node inputs. The remote signaling unit is connected to the mainboard and uses 16-channel DI dry node inputs. By converting the closing or opening of relay contacts into low or high levels and sending them to the electric energy meter remote signaling module, it can simultaneously monitor 16-channel device alarm conditions, switch positions, valve positions and other status information.

[0029] Furthermore, the remote control unit adopts 4-way DO dry node output. The remote control unit is connected to the main board and adopts 4-way DO dry node output to realize the opening and closing function of regulating 4-way switch devices.

[0030] Furthermore, the guide-rail electric energy meter also includes a communication unit 1-6, which is connected to the mainboard. The communication unit 1-6 is connected to the mainboard and has 4G communication capabilities, enabling remote data acquisition, remote control, and remote upgrade functions. It also has RS-485 communication capabilities, implements DL / T645-2007 and Modbus-RTU dual-protocol adaptive functions, and can be connected to an electric meter data acquisition device to achieve real-time metering data acquisition and local upgrade functions.

[0031] Furthermore, the guide rail type energy meter also includes a display unit 1-4, which is connected to the mainboard. The display unit 1-4 is connected to the mainboard to realize real-time display of load energy metering data and the energy meter device status information. In addition, the communication baud rate and the energy meter communication address can be set by pressing buttons on the site, and the parameter setting results can be intuitively viewed through the display unit 1-4.

[0032] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, they can make several improvements and modifications without departing from the principles of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A guide rail type electric energy meter with a dual power supply function, comprising a guide rail type electric energy meter body, a power supply unit (1-1), a sampling unit (1-2), an MCU (1-3), a display unit (1-4), a storage unit (1-5) and a remote signaling / remote control unit (1-7), characterized in that: A main board is provided in the main body of the guide rail type electric energy meter, and a power supply unit (1-1), a sampling unit (1-2), an MCU (1-3), a display unit (1-4), a storage unit (1-5) and a remote signaling / remote control unit (1-7) are respectively connected to the main board.

2. The guide rail type electric energy meter with dual power supply function according to claim 1, characterized in that: The power supply unit (1-1) uses DC24V as the main power supply and only supplies power to RS485 and DI / DO.

3. The guide rail type electric energy meter with dual power supply function according to claim 1, characterized in that: The sampling unit (1-2) adopts a metering chip.

4. The guide rail type electric energy meter with dual power supply function according to claim 1, characterized in that: The remote signaling unit uses 16-channel DI dry node input.

5. The guide rail type electric energy meter with dual power supply function according to claim 1, characterized in that: The remote control unit adopts 4-way DO dry node output.

6. The guide rail type electric energy meter with dual power supply function according to claim 1, characterized in that: The guide rail type electric energy meter further comprises a communication unit (1-6), and the communication unit (1-6) is connected to the main board.

7. The guide rail type electric energy meter with dual power supply function according to claim 1, characterized in that: The guide rail type electric energy meter further comprises a display unit (1-4), and the display unit (1-4) is connected to the main board.

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