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CN-224203299-U - Intelligent measurement device for electrical parameters of unmanned power station

CN224203299UCN 224203299 UCN224203299 UCN 224203299UCN-224203299-U

Abstract

The utility model provides an intelligent measurement device for electrical parameters of an unmanned power station, which relates to the technical field of power measurement devices and comprises a data processing module, a data acquisition module, an AD conversion module, a CPU plug-in unit, a communication module, an open loop, an analog output module and an MMI board, wherein the data acquisition module is connected with the AD conversion module, the AD conversion module is also connected with the data processing module, the data processing module is also connected with the communication module and the analog output module, the communication module is used for communicating with external equipment to transmit the electrical parameters, the MMI board comprises an indicator light, a liquid crystal and a keyboard, is connected with the data processing module through the CPU plug-in unit and used for manual interaction and equipment control, and is also externally connected with a generator set speed regulator, and the open loop is externally connected with a generator set. The utility model has the beneficial effects that the power signal or the frequency signal can be output by 4 paths of 4-20 mA, and the electrical parameters calculated by the device can be output in a communication mode, so that the measurement precision and stability are improved.

Inventors

  • ZHU DI
  • ZHANG JINJING
  • ZHAO GONGJIE
  • Liu Men

Assignees

  • 湖北清江水电开发有限责任公司
  • 湖北能源集团股份有限公司

Dates

Publication Date
20260505
Application Date
20250512

Claims (10)

  1. 1. The intelligent measurement device for the electrical parameters of the unmanned power station is characterized by comprising a data processing module (1), a data acquisition module (2), an AD conversion module (3), a CPU plug-in unit (4), a communication module (5), an open loop (6), an analog output module (7) and an MMI board (8); The data acquisition module (2) is connected with the AD conversion module (3) and is used for acquiring electrical data and transmitting the acquired data to the AD conversion module (3); the AD conversion module (3) is also connected with the data processing module (1) and is used for converting the received data from an analog signal to a digital signal and then transmitting the data to the data processing module (1); The data processing module (1) is also connected with the communication module (5) and the analog output module (7) and is used for processing and calculating data to obtain electrical parameters and temporarily storing the electrical parameters; The communication module (5) is communicated with the external equipment and is used for sending the parameters such as voltage, current, power factor and the like obtained by calculation of the data processing module (1) to the external equipment; The MMI board (8) comprises an indicator light, liquid crystal and a keyboard, and is connected with the data processing module (1) through the CPU plug-in unit (4) for manual interaction and device control; An open loop (6) is externally connected with a generator set and is used for adjusting the power of the generator set; And the analog output module (7) is also externally connected with a generator set speed regulator and is used for sending the frequency and power parameters calculated by the data processing module (1) to the generator set speed regulator.
  2. 2. The intelligent measurement device for the electrical parameters of the unmanned power station according to claim 1, wherein the data acquisition module (2) is an alternating current plug-in unit, and the model of the alternating current plug-in unit is PSL623C produced by the south of China.
  3. 3. The intelligent measurement device for the electrical parameters of the unmanned power station according to claim 1, wherein the data processing module (1) comprises a control processing unit and a storage unit; the control processing unit is used for controlling the issuing of the instruction and the processing of the data; The storage unit comprises EEPROM, SRAM and FLASH for storing data.
  4. 4. The intelligent measurement device for electrical parameters of the unmanned power station of claim 3, wherein the control unit is an ARM processor, and the model of the ARM processor is Cortex-M4.
  5. 5. The intelligent measurement device for the electrical parameters of the unmanned power station according to claim 2, wherein the data acquisition module (2) acquires electrical data including three-phase voltage data of a voltage transformer, three-phase current data of a current transformer and zero-sequence voltage data of the voltage transformer.
  6. 6. The intelligent measurement device for the electrical parameters of the unmanned power station according to claim 1, wherein the communication module (5) is used for communicating with external equipment in a wireless network mode.
  7. 7. The intelligent measurement device for the electrical parameters of the unmanned power station is characterized in that the analog output module (7) outputs fundamental wave power signals and frequency signals by 4 paths of 4-20 mA currents.
  8. 8. The intelligent measurement device for electrical parameters of an unmanned power station of claim 1, wherein said MMI board is MMI270M3-1 display control board of HongConn.
  9. 9. The intelligent measurement device for the electrical parameters of the unmanned power station according to claim 1 is characterized in that the open-loop (6) comprises a photoelectric coupler, a driving circuit and an outlet relay.
  10. 10. The intelligent measurement device for the electrical parameters of the unmanned power station of claim 6, wherein the external equipment is a SCADA system for realizing visual monitoring of the parameters.

Description

Intelligent measurement device for electrical parameters of unmanned power station Technical Field The utility model relates to the technical field of power measurement devices, in particular to an intelligent measurement device for electrical parameters of an unmanned power station. Background The power system usually contains a large amount of interference harmonics, which seriously reduces the measurement accuracy of the power grid frequency and the power of the generator, and affects the efficiency of power grid dispatching. Disclosure of Invention In order to solve the problems in the background art, the utility model provides the intelligent measurement device for the electrical parameters of the unmanned power station, which can calculate the electrical quantity according to the acquired data, output optional electrical quantity in a communication and wire analog output mode and improve the measurement precision and stability. The intelligent measurement device for the electrical parameters of the unmanned power station comprises a data processing module, a data acquisition module, an AD conversion module, a CPU plug-in unit, a communication module, an open loop, an analog output module and an MMI board; The data acquisition module is connected with the AD conversion module and used for acquiring electrical data and sending the acquired data to the AD conversion module; the AD conversion module is also connected with the data processing module and is used for converting the received data from an analog signal to a digital signal and then transmitting the data to the data processing module; The data processing module is also connected with the communication module and the analog output module and is used for processing and calculating the data to obtain electric parameters and temporarily store the electric parameters; The communication module is communicated with the external equipment and is used for sending the parameters such as voltage, current, power factor and the like obtained by calculation of the data processing module to the external equipment; The MMI board comprises an indicator lamp, a liquid crystal and a keyboard, and is connected with the data processing module through a CPU plug-in unit for manual interaction and equipment control; The open loop is externally connected with a generator set and is used for adjusting the power of the generator set; And the analog quantity output module is also externally connected with the generator set speed regulator and is used for sending the frequency and power parameters calculated by the data processing module to the generator set speed regulator. Further, the data acquisition module is an alternating current plug-in unit, and the model of the data acquisition module is PSL623C produced by the south of China. Further, the data processing module comprises a control processing unit and a storage unit; The control processing unit is an ARM processor, the model of which is Cortex-M4, and is used for controlling the issuing of instructions and the processing of data; The storage unit comprises EEPROM, SRAM and FLASH for storing data. Further, the data acquisition module acquires electric data comprising three-phase voltage data of a voltage transformer, three-phase current data of a current transformer and zero-sequence voltage data of the voltage transformer. Further, the communication module (5) communicates with external equipment by using a wireless network mode. Further, the analog output module outputs fundamental wave power signals and frequency signals by 4 paths of 4-20 mA currents. Further, the MMI board is selected from MMI270M3-1 display control board of HongConn. Further, the open-ended loop (6) comprises a photoelectric coupler, a driving circuit and an outlet relay. Further, the external device is a SCADA system for realizing visual monitoring of parameters. The utility model has the beneficial effects that the utility model can output optional fundamental wave power or frequency signals by 4 paths of 4-20 mA current, and output optional parameters such as voltage, current, power factor and the like calculated by a measuring device in a communication mode, thereby improving the measuring precision and stability. Drawings The utility model is further illustrated by the following examples in conjunction with the accompanying drawings: FIG. 1 is a schematic diagram of the structure of the present utility model; In the figure, a 1-data processing module, a 2-data acquisition module, a 3-AD conversion module, a 4-CPU plug-in, a 5-communication module, a 6-open loop, a 7-analog output module and an 8-MMI board. Detailed Description As shown in fig. 1, the intelligent measurement device for the electrical parameters of the unmanned power station comprises a data processing module 1, a data acquisition module 2, an AD conversion module 3, a CPU plug-in unit 4, a communication module 5, an open loop 6, an analog output module 7 and an MMI board