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CN-121995157-A - Sensor device and method for monitoring temperature vibration partial discharge of power distribution network

CN121995157ACN 121995157 ACN121995157 ACN 121995157ACN-121995157-A

Abstract

The application belongs to the technical field of sensors, and discloses a sensor device and a method for monitoring the temperature vibration partial discharge of a power distribution network, wherein the device comprises a composite sensor module, a demodulation module and a control module, wherein the composite sensor module is used for acquiring and processing a temperature signal, a vibration signal and a partial discharge ultrasonic signal to obtain an optical signal and sending the optical signal to the demodulation module; the integrated demodulator module is used for receiving and processing the optical signals to obtain multi-parameter data and sending the multi-parameter data to the intelligent monitoring platform module, and the intelligent monitoring platform module is used for receiving and processing the multi-parameter data to obtain the adjustment instructions and sending the adjustment instructions to the composite sensor module. The application can realize multi-parameter integrated monitoring of single equipment on temperature, vibration and partial discharge through the composite sensor, thereby reducing system redundancy, solving the problem of signal crosstalk through optimizing a packaging structure and a demodulation algorithm, improving measurement accuracy, reducing the occupation of optical fiber resources and improving deployment efficiency.

Inventors

  • WU FEIPENG
  • LI TIANFU
  • HUANG WEIJIE
  • LIANG YIQIANG
  • YAO QIMING
  • LAI KUI
  • LIANG JIANXIONG
  • CEN YAOYANG
  • ZOU WEI
  • XU WEIBIN
  • YANG XI
  • LI GUANGHUA
  • ZHANG WEITANG
  • JIAO JIAN
  • KONG ZHENG
  • FENG GUIQIN
  • WU ZICHAO
  • CHEN RUNYU
  • LIANG WEI
  • LIANG YONGBEN
  • WU RONGDA
  • CAI DEHUA
  • LI HAOTIAN
  • LIANG JIAYING
  • CHEN JINHONG
  • GUO LIANG
  • LIANG BIAO
  • XIE HAIJUN

Assignees

  • 广东电网有限责任公司江门供电局

Dates

Publication Date
20260508
Application Date
20260227

Claims (10)

  1. 1. A sensor device for monitoring local discharge of temperature vibrations of a power distribution network, the device comprising: the composite sensor module is used for acquiring and processing the temperature signal, the vibration signal and the partial discharge ultrasonic signal, obtaining an optical signal and sending the optical signal to the integrated demodulator module; The integrated demodulator module is used for receiving and processing the optical signals, obtaining multi-parameter data and sending the multi-parameter data to the intelligent monitoring platform module; And the intelligent monitoring platform module is used for receiving and processing the multi-parameter data, obtaining an adjustment instruction and sending the adjustment instruction to the composite sensor module.
  2. 2. The sensor device for power distribution network temperature vibration partial discharge monitoring according to claim 1, wherein the composite sensor module comprises an optical fiber temperature sensor, an optical fiber vibration sensor, and an optical fiber partial discharge sensor.
  3. 3. The sensor device for monitoring the temperature vibration partial discharge of a power distribution network according to claim 2, wherein the optical fiber temperature sensor comprises a substrate, an optical fiber grating, a cover plate and a copper ring; the fiber bragg grating and the cover plate are arranged on the substrate; The copper ring is arranged in the groove of the substrate during installation; The optical fiber temperature sensor is used for acquiring and processing a temperature signal, obtaining an optical signal and sending the optical signal to the integrated demodulator module.
  4. 4. The sensor device for monitoring the temperature vibration partial discharge of a power distribution network according to claim 2, wherein the optical fiber vibration sensor comprises a substrate, an optical fiber and an inertial mass; Grooves are respectively formed in two sides of the substrate, and the centers of the grooves and the inertial mass block are positioned on the same straight line; the optical fiber penetrates through the center of the inertial mass block and is fixed in grooves on two sides of the substrate; the inertial mass block is connected with the substrate through a damping fin; The optical fiber vibration sensor is used for acquiring and processing vibration signals, obtaining optical signals and sending the optical signals to the integrated demodulator module.
  5. 5. The sensor device for monitoring the temperature vibration partial discharge of the power distribution network according to claim 2, wherein the optical fiber partial discharge sensor comprises a diaphragm, a quartz tube, a collimator, a fixing nut, a compression spring, a positioning sleeve, an adjusting seat, a tail sleeve, a sleeve pipe and a clamping ring; wherein the thickness of the membrane is 40 μm.
  6. 6. The sensor device for power distribution network temperature vibration partial discharge monitoring according to claim 1, wherein the multi-parameter data includes temperature data, vibration data, and partial discharge data.
  7. 7. The sensor device for monitoring the temperature vibration partial discharge of the power distribution network according to claim 6, wherein the integrated demodulator module comprises a broadband light source, a high-speed acquisition card and an FPGA processing unit; The broadband light source is used for providing illumination; the high-speed acquisition card is used for acquiring optical signals and sending the optical signals to the FPGA processing unit; And the FPGA processing unit is used for receiving the optical signals, demodulating the optical signals, obtaining temperature data, vibration data and partial discharge data and sending the temperature data, the vibration data and the partial discharge data to the intelligent monitoring platform module.
  8. 8. A method for monitoring local discharge of temperature vibrations of a power distribution network, the method comprising: the composite sensor module acquires and processes the temperature signal, the vibration signal and the partial discharge ultrasonic signal to obtain an optical signal and sends the optical signal to the integrated demodulator module; the integrated demodulator module receives and processes the optical signals, obtains multi-parameter data and sends the multi-parameter data to the intelligent monitoring platform module; The intelligent monitoring platform module receives and processes the multi-parameter data, obtains an adjustment instruction and sends the adjustment instruction to the composite sensor module; And the compound sensor module receives the adjustment instruction and completes the corresponding adjustment operation.
  9. 9. The method for monitoring the local discharge of the temperature vibration of the power distribution network according to claim 8, wherein the integrated demodulator module receives and processes the optical signal, obtains multi-parameter data and sends the multi-parameter data to the intelligent monitoring platform module, and the method comprises the following steps: The integrated demodulator module receives the optical signals, collects and demodulates the optical signals to obtain multi-parameter data and sends the multi-parameter data to the intelligent monitoring platform module; Wherein the multi-parameter data includes temperature data, vibration data, and partial discharge data.
  10. 10. The method for monitoring the local discharge of the temperature vibration of the power distribution network according to claim 8, wherein the intelligent monitoring platform module receives and processes the multi-parameter data, obtains an adjustment command and sends the adjustment command to the composite sensor module, and comprises the following steps: The intelligent monitoring platform module receives multi-parameter data to obtain temperature data, vibration data and partial discharge data; the intelligent monitoring platform module compares a preset temperature threshold value with the temperature data to obtain a temperature monitoring result; the intelligent monitoring platform module performs spectrum analysis on the vibration data to obtain a vibration monitoring result; The intelligent monitoring platform module compares a preset partial discharge threshold value with the partial discharge data to obtain a partial discharge monitoring result; And the intelligent monitoring platform module analyzes according to the temperature monitoring result, the vibration monitoring result and the partial discharge monitoring result to obtain an adjustment instruction and sends the adjustment instruction to the composite sensor module.

Description

Sensor device and method for monitoring temperature vibration partial discharge of power distribution network Technical Field The application relates to the technical field of sensors, in particular to a sensor device and a method for monitoring the partial discharge of temperature vibration of a power distribution network. Background In the field of power distribution network equipment state monitoring, the current mainstream technical scheme comprises a traditional electric sensing system and a discrete optical fiber sensing system. The traditional electric sensing system senses physical quantities such as temperature, vibration and the like through electric signal change, but the intrinsic characteristics of the traditional electric sensing system cause obvious bottlenecks in application in complex electromagnetic environments. To overcome the electromagnetic interference problem, the industry introduces optical fiber based sensing techniques, such as monitoring temperature or vibration with a separate Fiber Bragg Grating (FBG) sensor, and detecting ultrasonic signals generated by partial discharge with a separate fabry-perot (F-P) cavity sensor. Although the anti-interference capability of the optical fiber sensors is improved, on the system architecture, for monitoring different parameters such as temperature, vibration, partial discharge and the like, independent sensor units are required to be deployed, special transmission optical cables are arranged, corresponding demodulation equipment is arranged, and a plurality of parallel sub-monitoring systems with single functions are formed. The scheme has the obvious defects of low system integration level, high deployment and maintenance cost, limited monitoring efficiency and the like, and is characterized by redundant equipment, large space occupation, complex installation flow, poor compatibility caused by different interface standards, and difficulty in realizing unified management and collaborative analysis of data. The root cause of this is the discreteness of the technical route. Sensing and demodulation mechanisms of parameters such as temperature, vibration, partial discharge and the like are different, so that special and separated hardware schemes are forced to be adopted. Meanwhile, the sensor interface and the demodulator data interface lack unified standards, and optical fiber resources are tense in the power distribution network environment, so that the integration of the hybrid networking and the system becomes extremely complex, and finally the overall efficiency of intelligent monitoring is restricted. Therefore, how to monitor and regulate the power distribution network efficiently becomes a problem to be solved. Disclosure of Invention The application provides a sensor device and a method for monitoring the temperature vibration partial discharge of a power distribution network, which can realize multi-parameter integrated monitoring of single equipment on the temperature, vibration and partial discharge through a composite sensor, thereby reducing system redundancy, solving the problem of signal crosstalk through optimizing a packaging structure and a demodulation algorithm, improving measurement accuracy, reducing the occupation of optical fiber resources and improving deployment efficiency. In a first aspect, an embodiment of the present application provides a sensor device for monitoring local discharge of temperature vibration of a power distribution network, where the sensor device includes: the composite sensor module is used for acquiring and processing the temperature signal, the vibration signal and the partial discharge ultrasonic signal, obtaining an optical signal and sending the optical signal to the integrated demodulator module; The integrated demodulator module is used for receiving and processing the optical signals, obtaining multi-parameter data and sending the multi-parameter data to the intelligent monitoring platform module; And the intelligent monitoring platform module is used for receiving and processing the multi-parameter data, obtaining an adjustment instruction and sending the adjustment instruction to the composite sensor module. Further, the composite sensor module comprises an optical fiber temperature sensor, an optical fiber vibration sensor and an optical fiber partial discharge sensor. Further, the optical fiber temperature sensor comprises a substrate, an optical fiber grating, a cover plate and a copper ring; The optical fiber grating and the cover plate are arranged on the substrate; The copper ring is arranged in the groove of the substrate during installation; The optical fiber temperature sensor is used for acquiring and processing the temperature signal, obtaining an optical signal and sending the optical signal to the integrated demodulator module. Further, the optical fiber vibration sensor comprises a substrate, an optical fiber and an inertial mass block; Grooves are respectively arranged