Control metering device integrating interconnection switch and electric energy metering

Abstract

The invention relates to a control metering device integrating an interconnection switch and electric energy metering. The control metering device comprises an interconnection switch control unit, the interconnection switch, an electric energy metering unit, a voltage and current measuring unit, a power distribution automation unit, a marketing unit, a switch control module and an optical fiber communication module. An interconnection switch control device and an electric energy metering device of a user are integrated, an interconnection switch control unit and an electric energy metering unit are directly installed on an interconnection switch, the electric energy metering unit monitors and measures parameters such as voltage and current of an electric power system in real time through a control interface, the device structure is simplified, and installation convenience is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of distribution lines, and particularly relates to a control and metering method and device integrating a tie switch and electric energy metering. Background Art

[0002] In modern power systems, as an important link in power transmission, the operation stability and reliability of distribution lines directly affect the quality and safety of power supply. In traditional distribution lines, the tie switch and the electric energy metering device are usually set separately, and the terminal unit and the network unit are also set separately. The tie switch is used to control the power distribution and switching, while the electric energy metering device is used to accurately measure the power consumption; the switch control module is usually used for the optical signal access of end-users, providing the reception and conversion of optical signals, while the optical fiber communication module is used in the fiber to the home (FTTH) network to convert optical signals into electrical signals and provide Internet access to users. Although this separated design can meet the basic functional requirements, there are some problems in practical applications, such as the complexity of equipment installation, high maintenance costs, and inconvenient operation. Therefore, in order to improve the efficiency and management level of the distribution system, there is an urgent need for a control and metering method and device integrating a tie switch and electric energy metering. Such a device can not only simplify the installation and maintenance of equipment, but also improve the operation convenience of the system and provide more accurate and real-time power data monitoring. Summary of the Invention

[0003] The present invention provides a control and metering method and device integrating a tie switch and electric energy metering, aiming to solve the problems of separate setting of the tie switch and the electric energy metering device in traditional distribution lines, and the challenges brought by the separate setting of the switch control module and the optical fiber communication module. The system effectively integrates the tie switch and the electric energy metering device into one device, realizing a high degree of integration and optimization of device functions. In addition, the terminal device supports optical fiber communication with the distribution automation master station, improving the communication ability between the terminal and the master station, and further enhancing the practical level of distribution automation.

[0004] To achieve the above object, the present invention provides the following technical solution: A control and metering device integrating a tie switch and electric energy metering, comprising a tie switch control unit, a tie switch, an electric energy metering unit, a voltage and current measurement unit, a distribution automation unit, and a marketing unit; The tie switch control unit adjusts the current by controlling and operating the tie switch to realize the circuit switching and load distribution, and at the same time provides status monitoring and fault protection functions, automatically disconnects the circuit in case of abnormal situations to protect the system safety, and supports remote operation and data recording; The electric energy metering unit accurately measures and records the electric energy consumption in the power system. It receives parameters including voltage, current, power, and energy from the tie switch control unit through the control interface, provides detailed electricity consumption data, supports real-time monitoring, data analysis, and report generation, and helps users understand the energy usage situation. The voltage and current measurement unit monitors and measures the voltage and current levels in the power system in real time, provides voltage and current data, converts the voltage and current signals into digital data that is easy to process and display, helps users monitor the operating status of the power system, ensures that the voltage and current are within a safe range, and supports system fault diagnosis and maintenance. The distribution automation unit manages the distribution network in the power system, realizes the automatic monitoring and control of distribution equipment, and optimizes power distribution by monitoring the real-time data of the power grid. The marketing unit issues a payment signal and sends the payment signal to the electric energy metering unit for calculation.

[0005] The electric energy metering unit includes a data processing module, an electric energy metering module, a voltage measurement module, a current measurement module, a power management module, a data storage module, and a display module. The data processing module is respectively connected to the electric energy metering module, the power management module, the data storage module, and the display module. The voltage measurement module and the current measurement module are connected to the electric energy metering module.

[0006] The tie switch control unit contains a switch control module and an optical fiber communication module. The switch control module, as the front-end device for data acquisition and control, realizes the real-time monitoring and operation of on-site equipment in the power system, is responsible for collecting signals from sensors and other devices, transmitting the data to the control center, and at the same time receiving control commands and performing corresponding operations. The optical fiber communication module constructs and manages the communication network in the power system, transmits data between various devices and systems, and supports the integration of different communication protocols. The switch control module is connected to the optical fiber communication module through a 24V DC power supply.

[0007] The switch control module includes a human-machine interface module, a power supply monitoring module, a distribution automation module, a protection module, a communication module, and a data storage and processing module. The human-machine interface module includes a display, a keyboard or touch screen, operation indicators, operation buttons, a data input module, a communication interface module, and a diagnostic tool. The power supply monitoring module is used to monitor current, voltage, power, frequency, electric energy, temperature, harmonics, and operating status. The switch control module further includes a relay protection control module, an automation control module, a status indication module, and a remote control module; the switch control module performs the opening and closing of the tie switch, the relay protection control module implements relay protection for the power system, the automation control module is provided with a control program to control the tie switch according to set rules, the status indication module is used to indicate the working status of the tie switch, and the remote control module is used to receive the main station control signal; The distribution automation module includes an automatic reconfiguration module, a fault detection and isolation module, a load control module, a voltage regulation module, a switching regulation module, a data acquisition and monitoring module, a remote control and monitoring module, and an optimal dispatching module; The protection module includes an overcurrent and overvoltage protection module, a differential protection module, a ground protection module, a short-circuit protection module, and a temperature protection module; The communication module includes a serial communication module, an Ethernet communication module, a wireless communication module, an optical fiber communication module, a data conversion module, and a protocol processing module; The data storage and processing module stores the monitoring data; The optical fiber communication module includes a network-side interface module, a CPU peripheral interface, an optical network unit main control chip, a debugging part, a clock circuit module, and a user-side interface module; the optical network unit main control chip is respectively connected to the network-side interface module, the CPU peripheral interface, the debugging part, and the user-side interface module; the CPU peripheral interface is connected to the clock circuit module; the debugging part is connected to the power generation circuit.

[0008] It includes the following steps: The voltage measurement unit is installed on the power supply side of the tie switch of the line; the tie switch control unit and the electric energy metering unit are installed at the tie switch. The tie switch control unit is responsible for collecting analog data and switch position information of the line, monitoring the switch status in real time, and controlling the opening and closing of the switch according to the user payment signal data output by the electric energy metering unit. The sensors of the switch control module in the tie switch control unit collect current, voltage, and power data in the distribution network in real time, and perform preprocessing and analysis through the data processing module in the electric energy metering unit to complete fault detection and load calculation tasks, and organize the processed data into structured information; the communication interface module of the human-machine interface module is responsible for packing the processed data and converting it into a format suitable for network transmission; the data is transmitted to the network-side interface module in the optical fiber communication module through the network interface module built in the switch control module. The network-side interface module converts the electrical signal into an optical signal and transmits it to the central system through the optical fiber network; in the central system, the communication interface converts the received optical signal back into an electrical signal, and the data processing unit decodes and further analyzes it to generate real-time monitoring data and control instructions; the central system returns the control instructions to the switch control module through the same optical fiber network. After receiving the instructions, the corresponding operations are executed through its communication module to realize the intelligent management of the distribution network; the analog data includes voltage, current, power, and frequency information; the electric energy metering unit collects voltage and current data from the tie switch control unit through the control interface, calculates the electricity consumption of users, and when users are in arrears, the electric energy metering unit will send an arrears tripping signal to the tie switch control unit, and the tie switch control unit will execute the tripping operation. When the marketing unit receives the payment information of users, it will be transmitted to the electric energy metering unit, and the electric energy metering unit will send a payment closing signal to the tie switch control unit, and the tie switch control unit will then execute the closing operation.

[0009] Technical effects and advantages of the present invention: 1. The present invention integrates the user's tie switch control device and electric energy metering device into one. By directly installing the tie switch control unit and the electric energy metering unit on the tie switch, the electric energy metering unit monitors and measures parameters such as voltage and current of the power system in real time through the control interface, simplifies the device structure and improves the installation convenience. This integrated design effectively avoids errors caused by complex wiring and significantly improves the on-site installation efficiency.

[0010] 2. By connecting the marketing unit with the electric energy metering unit, the present invention realizes the functions of automatic power-off for arrears and automatic power restoration for payment, thus further standardizing the user's electricity consumption management.

[0011] 3. By closely integrating the tie switch with the power metering function in the same device, and at the same time integrating the device that combines the traditionally separate switch control modules (such as routers, modems) and fiber optic communication modules (such as optical network terminals) in the tie switch control unit, the number of devices that need to be deployed and maintained is reduced, and the system complexity is lowered. The required cabinet and wiring space are also correspondingly reduced, making the installation and maintenance of the device more efficient. The equipment procurement cost is reduced, and the operating costs such as installation, maintenance, and power consumption can also be lowered. In addition, the integrated device can reduce the risk of failures caused by poor interfaces or connections. Since the terminal and network functions are in the same device, the latency of data transmission and processing is reduced, which helps to improve the overall network performance and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for the present invention will be briefly introduced below.

[0013] Figure 1 is a schematic diagram of the internal structure of the present invention; Figure 2 is a schematic diagram of the internal modules of the power metering unit of the present invention; Figure 3 is a schematic diagram of the internal module structure of the fiber optic communication of the present invention; Figure 4 is a schematic diagram of the internal modules of the switch control of the present invention; Figure 5 is a working flowchart of the device of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0015] As Figure 1As shown in the figure, the present invention discloses a terminal device integrating a tie switch and an electric energy metering device, which includes a tie switch control unit 03, a tie switch 01, an electric energy metering unit 16, a voltage and current measurement unit 02, a distribution automation unit 07, a marketing unit 08, a switch control module 04, and an optical fiber communication module 05. The tie switch 01 is used to switch the current between different circuits or power sources, and can connect or disconnect two different circuits, so as to realize the connection or isolation of power sources. The voltage and current measurement unit 02 is arranged on the power supply side of the tie switch 01, responsible for measuring the line voltage (current), and transmitting the voltage (current) information to the tie switch control unit 03 and the electric energy metering unit 06. The tie switch control unit 03 adjusts the current by controlling and operating the tie switch to realize the circuit switching and load distribution. At the same time, it receives the remote control signal of the distribution automation unit, the power calculation result of the electric energy metering unit 06, and the paid closing pulse signal to realize the control of the tie switch. The switch control module 04, as the front-end device for data acquisition and control, realizes the real-time monitoring and operation of on-site equipment in the power system, is responsible for collecting the signals of sensors and other devices, transmitting the data to the control center, and at the same time receiving the control command and executing the corresponding operation. The optical fiber communication module 05 is responsible for establishing a stable network connection, routing the data traffic, and supporting the integration of different communication protocols. The electric energy metering unit 06 monitors and measures the parameters such as voltage and current of the power system in real time through the control interface, calculates the user's electricity consumption, and transmits the result to the tie switch control unit. In addition, after receiving the payment signal from the marketing unit 08, the electric energy metering unit 06 sends a paid closing pulse signal to the tie switch control unit 03. The distribution automation unit 07 manages the distribution network in the power system, realizes the automatic monitoring and control of distribution equipment, and optimizes the power distribution by monitoring the real-time data of the power grid, such as current, voltage, and power, to improve the reliability and efficiency of power supply. The marketing unit 08 is responsible for sending the payment signal to the electric energy metering unit, realizing the functions of automatic power-off for arrears and automatic power restoration for payment.

[0016] As Figure 2As shown in the figure, the electric energy metering unit includes a data processing module 66, an electric energy metering module 63, a voltage measurement module 62, a current measurement module 61, a power management module 64, a data storage module 65, a display module 67, and a communication interface 68. The data processing module 66 is respectively connected to the electric energy metering module 63, the power management module 64, the data storage module 65, the display module 67, and the communication interface 68. The voltage measurement module 62 and the current measurement module 61 are connected to the electric energy metering module 63. The voltage measurement module 61 and the current measurement module 62 are responsible for collecting the three-phase voltage and current of the line and transmitting these data to the electric energy metering module 63. The electric energy metering module 63 calculates the electric energy consumption of the user based on the received voltage and current data and sends the calculation result to the data processing module 66. The data processing module 66 generates payment and arrears information based on these data and outputs the result to the tie switch control unit 03. The data storage module 65 is used to store the parameters, electricity quantity, historical data, etc. of the electric energy unit. The power management module 64 provides a 24V DC voltage and supplies power to the electric energy metering unit when the line is powered off. The data processing module 66 is responsible for processing and analyzing the electric energy data, generating various information and uploading it to the marketing system through the communication interface 68. The communication interface 68 includes infrared and RS485 serial ports, etc. The data processing module 65 is also connected to the tie switch control unit 03 and transmits the payment and arrears information to the tie switch control unit 03. The tie switch control unit 03 controls the opening and closing of the tie switch 01 according to the received information, thereby realizing the functions of tripping for arrears and closing for payment. The display module 67 is connected to the data processing module 65 and is used to intuitively display various data of the electric energy calculation unit for on-site personnel to consult.

[0017] As Figure 3As shown in the figure, there is a network - side interface module 51. This module uses an optical burst transceiver module, which mainly performs optoelectronic conversion on the optical signals transmitted on the optical fiber for transmission inside the network unit; performs electro - optical conversion on the electrical signals transmitted inside the network unit for transmission on the optical fiber, and realizes the burst transmission of uplink data and the continuous reception of downlink data; the CPU peripheral interface 52 includes: SRAM, SDRAM, IIC (EEPROM), Flash, etc. Among them, SRAM is connected to the internal memory and serves as the cache for data packets together; SDRAM serves as the external memory for network processing; the EEPROM in the IIC bus mode is used to store startup configuration parameters; Flash is used to burn the Boot Loader (or configuration file) and the firmware program into it. One or several of these CPU peripheral interface chips need to be selected according to the requirements of the selected main control chip; the optical network unit main control center 53 completes basic Ethernet functions, VLAN functions, VLAN Stacking functions, dynamic bandwidth functions, traffic classification functions, priority marking, multicast functions, OAM functions, FEC and other functions; the debugging part 54 provides the user with an RS232 serial port through the UART interface, enabling the user to debug and configure the network unit through the serial port; the clock circuit module 55 has two groups of clocks: 25MHz and 125MHz. The clock circuit module needs to provide a stable 125M clock signal for the main control chip of the network unit and a stable 25M clock signal for the switching chip and the PHY chip. In the implementation scheme of the clock circuit, in order to obtain accurate and stable clock signals, the clock source should use an active crystal oscillator; the user - side interface module 56 mainly provides the user with a 10 / 100 ( / 1000) Mbps adaptive Ethernet port; the power generation circuit 57. Considering that when the input current is too large, it may damage the network unit, a fuse needs to be selected to protect it from overload.

[0018] As Figure 4 shown, a human - machine interface module 41 is provided to enable the operator to perform manual control and parameter configuration; the power supply monitoring module 42 is responsible for real - time monitoring of electrical parameters such as voltage, current, and power of the distribution network and recording the operating status; the distribution automation module 43 supports automated operation and management, such as fault detection, location, isolation, and power restoration; the protection module 44 realizes the protection function of the distribution network, detects and processes faults through the set protection logic; the communication module 45 is used for data communication with the upper - level monitoring system or other terminal devices, and usually supports multiple communication protocols such as MODBUS, IEC 61850, GPRS, etc.; the data storage and processing module 46 is responsible for real - time processing of the collected data, performing analysis tasks, and storing the processing results for subsequent use.

[0019] As Figure 5This is the working process of the communication device of the present invention: The voltage measurement unit 02 is installed on the power supply side of the tie switch of the line; the tie switch control unit and the electric energy metering unit are installed at the tie switch. The tie switch control unit 03 is responsible for collecting analog data and switch position information of the line, monitoring the switch status in real time, and controlling the opening and closing of the tie switch according to this data. The sensors of the switch control module in the tie switch control unit 03 collect data such as current, voltage, and power in the distribution network in real time, perform preprocessing and analysis through the data processing module 66, complete tasks such as fault detection and load calculation, and organize the processed data into structured information. The communication module 45 is responsible for packing these data and converting them into a format suitable for network transmission. The data is transmitted to the network-side interface module 51 in the optical fiber communication module through the network interface module built in the switch control module. This module converts the electrical signal into an optical signal and transmits it to the central monitoring system through the optical fiber network. In the central monitoring system, the communication interface converts the received optical signal back into an electrical signal, and the data processing unit decodes and further analyzes it to generate real-time monitoring data and control instructions. The central system returns the control instructions to the switch control module 04 through the same optical fiber network. After receiving the instructions, the corresponding operations are executed through the communication module 45 to realize the intelligent management of the distribution network. The analog data includes information such as voltage, current, power, and frequency. The electric energy metering unit 06 collects voltage and current data at the tie switch through the control interface and calculates the electricity consumption of the user. When the user owes fees, the electric energy metering unit 06 will send an overdue tripping signal to the tie switch control unit, and the tie switch control unit will perform the tripping operation. When the marketing system 08 receives the payment information of the user, it will be transmitted to the electric energy metering unit 06, and the latter will send a payment closing signal to the tie switch control unit 03, and the tie switch control unit will then perform the closing operation. This device realizes the real-time monitoring, analysis, and control of data, and improves the intelligent level and operation efficiency of the distribution network.

[0020] Through this process, the distribution automation system can realize the real-time monitoring and management of the grid status, and improve the stability and reliability of the grid.

Claims

1. A control and metering device integrating a contact switch and electric energy metering, characterized in that, It includes a tie-switch control unit (03), a tie-switch (01), an electric energy metering unit (06), a voltage and current measurement unit (02), a distribution automation unit (07), and a marketing unit (08); The tie-switch control unit (03) adjusts the current by controlling and operating the tie-switch (01) to achieve circuit switching and load distribution. Meanwhile, it provides status monitoring and fault protection functions, automatically disconnects the circuit in case of abnormal conditions to protect the system safety, and supports remote operation and data recording; The electric energy metering unit (06) accurately measures and records the electric energy consumption in the power system, collects parameters including voltage, current, power, and energy from the tie-switch control unit (03) through a control interface, provides detailed power consumption data, supports real-time monitoring, data analysis, and report generation, and helps users understand the energy usage situation; The voltage and current measurement unit (02) real-time monitors and measures the voltage and current levels in the power system, provides voltage and current data, converts the voltage and current signals into digital data that is easy to process and display, helps users monitor the operating status of the power system, ensures that the voltage and current are within a safe range, and supports system fault diagnosis and maintenance; The distribution automation unit (07) manages the distribution network in the power system, realizes the automatic monitoring and control of distribution equipment, and optimizes power distribution by monitoring the real-time data of the power grid; The marketing unit (08) issues a payment signal and sends the payment signal to the electric energy metering unit (06) for calculation.

2. The control and metering device integrating a contact switch and power metering according to claim 1, characterized in that, The electric energy metering unit (06) includes a data processing module (66), an electric energy metering module (63), a voltage measurement module (62), a current measurement module (61), a power management module (64), a data storage module (65), and a display module (67); The data processing module (66) is respectively connected to the electric energy metering module (63), the power management module (64), the data storage module (65), and the display module (67); The voltage measurement module (62) and the current measurement module (61) are connected to the electric energy metering module (63).

3. The control and metering device integrating a contact switch and power metering according to claim 1, characterized in that, The tie-switch control unit (03) contains a switch control module (04) and an optical fiber communication module (05). The switch control module, as a front-end device for data acquisition and control, monitors and operates on-site equipment in real time; The optical fiber communication module constructs and manages the communication network in the power system, and the switch control module is connected to the optical fiber communication module through a 24V DC power supply.

4. The control and metering device integrating a contact switch and power metering according to claim 3, characterized in that, The switch control module (04) includes a human-machine interface module (41), a power supply monitoring module (42), a distribution automation module (43), a protection module (44), a communication module (45), and a data storage and processing module (46); The human-machine interface module (41) includes a display, a keyboard or touch screen, operation indicators, operation buttons, a data input module, a communication interface module, and a diagnostic tool; The power supply monitoring module (42) is used to monitor current, voltage, power, frequency, electric energy, temperature, harmonics, and operating status; The switch control module further includes a relay protection control module, an automation control module, a status indication module, and a remote control module; the switch control module executes the opening and closing of the tie switch, the relay protection control module implements relay protection for the power system, the automation control module is provided with a control program to control the tie switch according to set rules, the status indication module is used to indicate the working status of the tie switch, and the remote control module is used to receive the main station control signal; The distribution automation module (43) includes an automatic reconstruction module, a fault detection and isolation module, a load control module, a voltage regulation module, a switching regulation module, a data acquisition and monitoring module, a remote control and monitoring module, and an optimal scheduling module; the protection module (44) includes an overcurrent and overvoltage protection module, a differential protection module, a ground protection module, a short-circuit protection module, and a temperature protection module; The communication module (45) includes a serial communication module, an Ethernet communication module, a wireless communication module, an optical fiber communication module, a data conversion module, and a protocol processing module; The data storage and processing module (46) stores the monitoring data; The optical fiber communication module (05) includes a network side interface module (51), a CPU peripheral interface (52), an optical network unit main control chip (53), a debugging part (54), a clock circuit module (55), and a user side interface module (56); the optical network unit main control chip (53) is respectively connected to the network side interface module (51), the CPU peripheral interface (52), the debugging part, and the user side interface module (56); the CPU peripheral interface (52) is connected to the clock circuit module (55); the debugging part is connected to the power generation circuit (57).

5. The control and metering device integrating a contact switch and power metering according to claim 3, characterized in that, It includes the following steps: The voltage measurement unit (02) is installed on the power supply side of the tie switch of the line; The tie switch control unit (03) and the electric energy metering unit (06) are installed at the tie switch. The tie switch control unit (03) is responsible for collecting analog data of the line and switch position information, monitoring the switch status in real time, and controlling the opening and closing of the tie switch according to the user payment signal data output by the electric energy metering unit (06). The sensors of the switch control module (14) in the tie switch control unit (06) collect current, voltage, and power data in the distribution network in real time, which are preprocessed and analyzed by the data processing module (66) in the electric energy metering unit (06) to complete fault detection and load calculation tasks, and organize the processed data into structured information; the communication module 45 is responsible for packing the processed data and converting it into a format suitable for network transmission; the data is transmitted to the network-side interface module (51) in the optical fiber communication module through the network interface module built in the switch control module. The network-side interface module (51) converts the electrical signal into an optical signal and transmits it to the central monitoring system through the optical fiber network; in the central monitoring system, the communication interface converts the received optical signal back into an electrical signal, and the data processing unit decodes and further analyzes it to generate real-time monitoring data and control instructions; the central monitoring system returns the control instructions to the switch control module (04) through the same optical fiber network. After receiving the instructions, the corresponding operations are executed through its communication module (45) to realize the intelligent management of the distribution network; the analog data includes voltage, current, power, and frequency information; the electric energy metering unit (06) collects voltage and current data from the tie switch control unit through the control interface, calculates the electricity consumption of the user, and when the user is in arrears, the electric energy metering unit (06) sends an arrears tripping signal to the tie switch control unit (03), and the tie switch control unit (03) will perform the tripping operation. When the marketing unit (08) receives the payment information of the user, it will be transmitted to the electric energy metering unit (06), and the electric energy metering unit (06) will send a paid closing signal to the tie switch control unit (03), and the tie switch control unit (03) will then perform the closing operation.

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