Power data monitoring system of feeder terminal

Abstract

The utility model discloses an electric power data monitoring system of a feeder terminal. The electric power data monitoring system comprises a host module, a data acquisition module, a communication module, a man-machine interaction module, a power supply module, a line protection module and an upper computer. The input end of the host module is connected with the output end of the data acquisition module, the host module is connected with the man-machine interaction module, the host module is connected with the line protection module, the host module is connected with an upper computer through the communication module, and the power supply module is connected with the host module, the data acquisition module, the communication module, the man-machine interaction module and the line protection module. The line protection module is connected in series in the distribution line. According to the electric power data monitoring system of the feeder line terminal, real-time and on-site monitoring of electric power parameters in a power distribution network is realized through data acquisition, processing, communication and control of the sub-modules; images of the electric power data and part of the data are displayed through a man-machine interaction touch screen or an upper computer, and the user interaction experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power system automation, in particular to a power data monitoring system for a feeder terminal, which can monitor power data on a distribution line in real time and control the on-off of the distribution line. Background Art

[0002] Traditional power monitoring systems have long relied primarily on manual inspections and scheduled maintenance to ensure their proper operation. However, this model has significant limitations, particularly in achieving real-time, comprehensive monitoring of power systems. Limited human resources and fixed inspection cycles make it difficult to detect and address many potential problems and anomalies in a timely manner, undoubtedly increasing the risks of power system operation.

[0003] Furthermore, traditional power monitoring systems face the challenge of a lack of effective data collection and analysis methods. In the past, data collection often relied on manual recording and simple instrument displays, a method that was not only inefficient but also prone to errors. Furthermore, there was a lack of scientific analysis and processing methods for the collected data, resulting in a process of fault diagnosis and resolution that often relied on empirical judgment, resulting in low efficiency and difficulty in ensuring accuracy. This clearly failed to meet the stringent requirements of modern power systems for high reliability and efficiency.

[0004] However, with the rapid development of microelectronics, computer technology, communications technology, and intelligent algorithms, the automation and intelligence levels of power systems have reached unprecedented heights. As a crucial component of power automation, power data monitoring systems have gradually become an integral part of modern power systems. Their core function is to monitor and analyze key parameters in the power system in real time. Through high-precision, high-frequency data acquisition, they provide comprehensive control over the power system's operating status. Upon detecting an anomaly, the system immediately issues an alarm and automatically performs preliminary diagnosis and resolution, significantly reducing the time required to detect and resolve a fault, thereby improving the safety and stability of the power system.

[0005] In recent years, significant progress has been made in the research and application of power data monitoring systems, both domestically and internationally. By employing high-performance microprocessors and high-precision sensors, the system is able to precisely measure power parameters, providing accurate, real-time data support for key indicators such as voltage, current, and power factor. Furthermore, advanced communication technologies, such as fiber-optic and wireless communications, enable rapid data transmission and remote monitoring, enabling operations and maintenance personnel to monitor the operating status of the power system anytime, anywhere. Furthermore, the application of intelligent algorithms has greatly improved the accuracy of fault diagnosis and prediction. Through in-depth learning and analysis of historical data, the system can predict potential fault points and take appropriate preventative measures in advance.

[0006] However, despite significant progress, existing power data monitoring systems still face some shortcomings. For example, in terms of real-time performance, delays in data transmission and processing mean that the system's response speed to abnormal situations needs to be improved. Furthermore, regarding user interaction, the system's interface and interactive design are often overly complex, lacking in intuitiveness and user friendliness, which can be frustrating for non-professional users. Therefore, future power data monitoring systems will require further optimization and improvement in real-time performance and user interaction to better meet the needs of modern power systems. Utility Model Content

[0007] This utility model is funded by the autonomous region-level Guilin University of Electronic Technology College Student Innovation and Entrepreneurship Training Program Project, project name: Intelligent Distribution Network Real-time Monitoring and Data Analysis System, project number: S202410595316. After innovative research and development by the project team, the utility model has obtained the power data monitoring system of the feeder terminal. The system realizes real-time and on-site monitoring of power parameters in the distribution network through modular data collection, processing, communication and control; displays power data and images of partial data through a human-computer interaction touch screen or a host computer, thereby improving the user interaction experience and solving the shortcomings of the existing technology.

[0008] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0009] A power data monitoring system for a feeder terminal includes a host module, a data acquisition module, a communication module, a human-computer interaction module, a power supply module, a line protection module, and a host computer; the input end of the host module is connected to the output end of the data acquisition module, the host module is connected to the human-computer interaction module, the host module is connected to the line protection module, the host module is connected to the host computer via the communication module, the power supply module is connected to the host module, the data acquisition module, the communication module, the human-computer interaction module, and the line protection module, and the line protection module is connected in series in the distribution line.

[0010] Furthermore, the host module uses a system board of model STM32F103ZET6.

[0011] Furthermore, the host module obtains the first output of the data acquisition module through SPI communication, and simultaneously reads the second output of the data acquisition module through the ADC port.

[0012] Furthermore, the host module uses an FFT algorithm to process the second output of the data acquisition module to achieve harmonic analysis and calculation of power data.

[0013] Furthermore, the data acquisition module is composed of a voltage transformer, a current transformer, a voltage signal processing circuit, a current signal processing circuit and a CS5436 module.

[0014] Furthermore, the data acquisition module is connected to the distribution line through the voltage transformer and current transformer in the module, the voltage transformer and current transformer are respectively connected to the voltage signal processing circuit and the current signal processing circuit, and the voltage signal processing circuit and the current signal processing circuit are connected to the CS5436 module.

[0015] Furthermore, the data acquisition module has two outputs. The first is the voltage data obtained by the voltage signal processing circuit and can be collected by the chip, and the current data obtained by the current signal processing circuit and can be collected by the chip. The second is the power data obtained after processing by the CS5436 module.

[0016] Furthermore, the communication module uses a USB to TTL circuit to implement short-distance wired data communication between the host module and the host computer.

[0017] Furthermore, the human-computer interaction module uses an embedded UI screen and uses the STMH750 series single-chip microcomputer as the human-computer interaction screen driver chip.

[0018] Furthermore, the line protection module includes a fuse and a relay.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) The utility model's power data monitoring system adopts a modular design, covering functions such as data acquisition, data processing, communication transmission and remote control, and realizes real-time, on-site monitoring of power parameters of the distribution network. The system supports the display of power data and some visual images through an intuitive human-computer interactive touch screen or a remote host computer interface, thereby greatly improving the user's operating experience and interactivity.

[0021] (2) The power data monitoring system of the feeder terminal of the utility model acquires data through the data acquisition module, displays data and performs human-computer interaction through the human-computer interaction module, and is controlled by the human-computer interaction module, the host module and the line protection module, thereby realizing real-time and on-site monitoring of power data on the distribution line.

[0022] Figures and descriptions

[0023] Figure 1 This is a functional block diagram of a power data monitoring system for a feeder terminal provided by an embodiment of the present utility model;

[0024] Figure 2 This is a principle block diagram of the data acquisition module system provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The following describes the specific implementation of the present invention in conjunction with the accompanying drawings: Figure 1 As shown, the power data monitoring system of the feeder terminal of the present invention includes a host module A, a data acquisition module B, a communication module D, a human-computer interaction module C, a power module E, a line protection module F and a host computer G; the input end of the host module A is connected to the output end of the data acquisition module B, the host module A is connected to the human-computer interaction module C, the host module A is connected to the line protection module F, the host module A is connected to the host computer G through the communication module D, the power module E is connected to the host module A, the data acquisition module B, the communication module D, the human-computer interaction module C and the line protection module F, and the line protection module F is connected in series in the distribution line.

[0026] The host module uses a system board with the model number STM32F103ZET6, which is used for testing the system, data processing and communication.

[0027] The data acquisition module, such as Figure 2 As shown, it is composed of a voltage transformer 11, a current transformer 21, a voltage signal processing circuit 12, a current signal processing circuit 22 and a CS5436 module 3.

[0028] The data acquisition module has two outputs. The first is the voltage data obtained by the voltage signal processing circuit and can be collected by the chip, and the current data obtained by the current signal processing circuit and can be collected by the chip. The second is the power data obtained after processing by the CS5436 module.

[0029] The host module obtains the first output of the data acquisition module through SPI communication, and reads the second output of the data acquisition module through the ADC port.

[0030] The host module uses the FFT algorithm to process the second output of the data acquisition module to achieve harmonic analysis and calculation of power parameters.

[0031] The communication module uses a USB to TTL circuit to achieve short-distance wired data communication between the host module and the host computer.

[0032] The human-computer interaction module uses an embedded UI screen and an STMH750 series single-chip microcomputer as a human-computer interaction screen driver chip to realize data display and device operation.

[0033] The power supply module is used to supply power to the host module, the data acquisition module, the communication module, the human-computer interaction module and the protection module.

[0034] The line protection module includes a fuse and a relay. The fuse is used to deal with overcurrent conditions, and the relay is controlled by the host module to control the on and off of the distribution line.

[0035] The host computer has display and communication functions. The display function of the host computer is reflected in the ability to display data, and the communication function of the host computer is reflected in the ability to exchange data with the host computer via the communication module.

[0036] During operation of the feeder terminal power data monitoring system of the present invention, the power supply module first steps down the voltage using a 220V to ±15V transformer, then rectifies and filters the voltage to obtain a smooth ±15V voltage. This voltage is then reduced to ±12V and 5V by a voltage regulator. The ±12V voltage is used to power the host module, while the 5V voltage is used to power the voltage signal processing circuit and current signal processing circuit in the data acquisition module, the host module, and the human-computer interaction module. The 5V voltage required for the host module and the human-computer interaction module can also be provided by a host computer.

[0037] At the same time, the voltage transformer 11 obtains a voltage signal from the distribution line, and the voltage signal is biased and amplified by the voltage signal processing circuit 12 to become a voltage signal that can be collected by the chip; at the same time, the current transformer 21 obtains a current signal from the distribution line, and the current signal is biased and amplified by the current signal processing circuit 22 to become a current signal that can be collected by the chip. The signal is collected and processed by the CS5463 module 3 to obtain real-time active power, reactive power, apparent power, power factor, line temperature and other power data. These power data are then read by the host module through on-chip SPI communication. The accuracy is high, with 24 bits of accuracy, but the real-time performance is low, with data updates taking about 500ms.

[0038] At the same time, the voltage and current signals that can be collected by the chip are directly collected by the host module's ADC. The acquired voltage and current digital signals are highly real-time. The host module then uses the FFT algorithm to process these acquired voltage and current digital signals to calculate the effective values ​​of each harmonic of the voltage and current, as well as the active power, reactive power, and apparent power. This method calculates active power, reactive power, apparent power, and power factor with high real-time performance, compensating for the limited real-time performance of power data collected by the CS5463 module.

[0039] Subsequently, the various power data obtained by the host module are sent to the human-computer interaction module and then to the host computer through the communication module.

[0040] Among them, the data acquired by the CS5463 module in the data acquisition module is relatively accurate and is displayed in the human-computer interaction module and the host computer in digital form; the data directly collected by the host module from the ADC end of the host module is highly real-time and is displayed in the human-computer interaction module and the host computer in the form of images, realizing real-time monitoring of power data.

[0041] By operating the human-machine interaction module or the host computer, the human-machine interaction module or the host computer controls the relay action in the line protection module through the host module to achieve control of the on-off of the distribution line.

Claims

1. A power data monitoring system for a feeder terminal, characterized in that: It includes a host module, a data acquisition module, a communication module, a human-computer interaction module, a power module, a line protection module and a host computer; the input end of the host module is connected to the output end of the data acquisition module, the host module is connected to the human-computer interaction module, the host module is connected to the line protection module, the host module is connected to the host computer through the communication module, the power module is connected to the host module, the data acquisition module, the communication module, the human-computer interaction module and the line protection module, and the line protection module is connected in series in the distribution line.

2. The power data monitoring system for feeder terminals according to claim 1, characterized in that: The host module uses a system board of model STM32F103ZET6.

3. The power data monitoring system for feeder terminals according to claim 2, characterized in that: The host module obtains the first output of the data acquisition module through SPI communication, and reads the second output of the data acquisition module through the ADC port.

4. The power data monitoring system for feeder terminals according to claim 3, characterized in that: The host module uses the FFT algorithm to process the second output of the data acquisition module to achieve harmonic analysis and power data calculation.

5. The power data monitoring system for feeder terminals according to claim 1, characterized in that: The data acquisition module consists of a voltage transformer, a current transformer, a voltage signal processing circuit, a current signal processing circuit and a CS5436 module.

6. The power data monitoring system for feeder terminals according to claim 5, characterized in that: The data acquisition module is connected to the distribution line through the voltage transformer and current transformer in the module. The voltage transformer and current transformer are respectively connected to the voltage signal processing circuit and the current signal processing circuit. The voltage signal processing circuit and the current signal processing circuit are connected to the CS5436 module.

7. The power data monitoring system for a feeder terminal according to claim 1, 5 or 6, characterized in that: The data acquisition module has two outputs. The first is the voltage data obtained by the voltage signal processing circuit and can be collected by the chip, and the current data obtained by the current signal processing circuit and can be collected by the chip. The second is the power data obtained after processing by the CS5436 module.

8. The power data monitoring system for feeder terminals according to claim 1, characterized in that: The communication module uses a USB to TTL circuit to achieve short-distance wired data communication between the host module and the host computer.

9. The power data monitoring system for feeder terminals according to claim 1, characterized in that: The human-computer interaction module uses an embedded UI screen and uses the STMH750 series single-chip microcomputer as the human-computer interaction screen driver chip.

10. The power data monitoring system for feeder terminals according to claim 1, characterized in that: The line protection module includes a fuse and a relay.

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