Power transmission line terminal sensing monitoring system

Abstract

The invention discloses a power transmission line terminal sensing monitoring system which comprises a sensor unit, a low-power-consumption coordination unit, a controller unit, a communication unit, a positioning information unit and an energy taking unit. Wherein the sensor unit comprises a plurality of sensor modules; the low-power consumption coordination unit comprises a demand receiving module and a timing module which are connected with the controller unit, and a state conversion module which is respectively connected with the demand receiving module, the timing module and the sensor unit; the controller unit is used for collecting and processing corresponding data information; the communication unit is used for being in communication connection with a background server; the positioning information unit is used for acquiring geographical location information of the sensing terminal; the energy taking unit comprises an induction energy taking module and a battery module and is used for supplying power to equipment; the method can reduce the power consumption of a large-scale power transmission line state monitoring sensor network, reduces the generation of redundant data, improves the monitoring efficiency, and reduces the monitoring cost.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission line status monitoring, and in particular relates to a power transmission line terminal sensor monitoring system. Background Art

[0002] Transmission lines are mainly used for electric energy transmission and are an important part of the power system. Ensuring the normal and stable operation of transmission lines is a necessary condition for maintaining the normal operation of the power grid. my country has a vast territory and diverse geographical environment. Transmission lines are easily affected by extreme weather and natural environment such as freezing rain, snow, strong winds, and thunderstorms, which can cause icing, shaking, and line breaks on transmission lines, affecting the safe and stable operation of the power grid. Therefore, it is very necessary to conduct online monitoring of transmission lines and monitor the operating status of transmission lines in real time.

[0003] In the prior art, multiple sensors are usually installed along the transmission lines to collect the status data of the transmission lines in real time. In order to meet the long-distance power transmission in different regions of the country, the transmission lines are usually large in scale and long in distance. Therefore, in order to comprehensively monitor the status of the transmission lines, a large number of sensors need to be deployed on large-scale transmission lines, which leads to the need to transmit a large amount of monitoring data. Not only does the communication transmission power consumption is large, but the large amount of redundant monitoring information also makes the data information processing work heavy and cumbersome, increasing the difficulty of extracting effective monitoring data.

[0004] Therefore, in order to solve the above problems, it is necessary to develop a transmission line terminal sensor monitoring system. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a transmission line terminal sensor monitoring system to reduce the power consumption of large-scale transmission line status monitoring sensor networks, reduce the amount of redundant data generated, improve monitoring efficiency, and reduce monitoring costs.

[0006] The object of the present invention is achieved as follows: A transmission line terminal sensor monitoring system includes a sensor unit, a low-power coordination unit, a controller unit, a communication unit, a positioning information unit and an energy acquisition unit; Among them, the sensor unit includes sensor modules respectively arranged at multiple sensor nodes of the transmission line; the low-power coordination unit includes a demand receiving module and a timing module connected to the controller unit and always kept in an activated state, and a state conversion module connected to the demand receiving module, the timing module and the sensor unit respectively, the state conversion module receives the data acquisition signal of the demand receiving module or the timing module, and converts the sensor unit connected thereto from a sleep state to an activated state, so that it maintains the startup state to collect logarithmic information; the controller unit is used to collect and process the corresponding data information, and transmit the data information through the communication unit; the communication unit is used to communicate with the background server, upload the data information to the background server, and simultaneously receive the background server instruction information to the controller unit; the positioning information unit is used to obtain the geographical location information of the sensor terminal; the energy acquisition unit includes an inductive energy acquisition module and a battery module, the inductive energy acquisition module directly draws power from the high-voltage wire through inductive energy acquisition, and combines with the battery module to power the equipment.

[0007] Furthermore, the sensor module includes a voltage sensor module, a current sensor module, an acceleration sensor module and a temperature and humidity sensor module.

[0008] Furthermore, the voltage sensor module adopts a D-dot voltage sensor, including a differential amplifier circuit, a filter circuit and a level raising circuit; the current sensor adopts a Rogowski coil current sensor, including an open flexible Rogowski coil and a matching integrator.

[0009] Furthermore, the acceleration sensor module adopts an MPU6050 acceleration sensor, and the temperature and humidity sensor module adopts an SHT15 temperature and humidity sensor.

[0010] Furthermore, the sensor module also includes a micro-meteorological sensor module and a tilt sensor module.

[0011] Furthermore, the communication module is implemented using a GPRS wireless communication module.

[0012] Furthermore, the positioning information unit is implemented using a GPS / Beidou dual-mode positioning module.

[0013] Furthermore, the inductive energy acquisition module includes an energy acquisition CT, a front-end protection circuit, a rectifier and filter circuit, a power acquisition regulation circuit, an isolation voltage stabilization circuit and a power conversion circuit; the battery module adopts a lithium battery assembly, specifically including a lithium battery charging and discharging circuit, a lithium battery protection circuit and a lithium battery pack.

[0014] Furthermore, the priority of the data acquisition signal of the demand receiving module is higher than the priority of the data acquisition signal of the timing module.

[0015] Due to the adoption of the above technical scheme, the beneficial effects of the present invention are as follows: by arranging sensor modules at multiple sensor nodes of the transmission line to collect the status information of the transmission line in real time, and by arranging a low-power coordination unit, the sensor units at the transmission line sensor nodes that are in good status and currently do not need to collect information remain in a sleep state, while the sensor units at the sensor nodes that are in abnormal status or in bad weather conditions or have collection requirements are activated to enter a working state, which not only reduces the generation of redundant monitoring information, but also reduces the transmission burden of the communication unit, reduces the operating power consumption and communication transmission power consumption, and is more efficient and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a principle block diagram of the present invention. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] like Figure 1 As shown, a transmission line terminal sensor monitoring system includes a sensor unit, a low-power coordination unit, a controller unit, a communication unit, a positioning information unit and an energy acquisition unit.

[0019] Wherein, the sensor unit includes sensor modules respectively arranged at multiple sensor nodes of the transmission line, which are used to collect various state parameters in the transmission line, including voltage, current, temperature and humidity, conductor dancing, sag, wind deviation and other data; preferably, the sensor module includes a voltage sensor module, a current sensor module, an acceleration sensor module and a temperature and humidity sensor module; specifically, the voltage sensor module can adopt a D-dot voltage sensor, including a differential amplifier circuit, a filter circuit and a level raising circuit; the current sensor can adopt a Rogowski coil current sensor, including an open flexible Rogowski coil and a matching integrator; the acceleration sensor module can adopt an MPU6050 acceleration sensor; the temperature and humidity sensor module can adopt an SHT15 temperature and humidity sensor; preferably, the sensor module also includes a micrometeorological sensor module and an inclination sensor module.

[0020] Among them, the low-power coordination unit includes a demand receiving module and a timing module connected to the controller unit and always maintained in an activated state, and a state conversion module connected to the demand receiving module, the timing module and the sensor unit respectively. The state conversion module receives the data acquisition signal of the demand receiving module or the timing module, and converts the sensor unit connected thereto from a sleep state to an activated state, so that it maintains the startup state to collect logarithmic information; preferably, the priority of the data acquisition signal of the demand receiving module is higher than the priority of the data acquisition signal of the timing module.

[0021] The controller unit is used to collect and process corresponding data information, and transmit the data information through the communication unit.

[0022] Among them, the communication unit is used to communicate with the background server, upload data information to the background server, and simultaneously receive command information from the background server to the controller unit, so as to realize communication between the terminal monitoring sensor system and the server; preferably, the communication module can be implemented using a GPRS wireless communication module.

[0023] Wherein, the positioning information unit is used to obtain the geographical location information of the sensor terminal; preferably, the positioning information unit can be implemented using a GPS / Beidou dual-mode positioning module.

[0024] Among them, the energy acquisition unit includes an inductive energy acquisition module and a battery module. The inductive energy acquisition module directly draws electricity from the high-voltage wire by inductive energy acquisition, and combines with the battery module to power the equipment; preferably, the inductive energy acquisition module includes an energy acquisition CT, a front-end protection circuit, a rectifier and filter circuit, a power acquisition regulation circuit, an isolation voltage stabilization circuit and a power conversion circuit; the battery module adopts a lithium battery assembly, specifically including a lithium battery charging and discharging circuit, a lithium battery protection circuit and a lithium battery pack.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A transmission line terminal sensor monitoring system, characterized in that: It includes a sensor unit, a low-power coordination unit, a controller unit, a communication unit, a positioning information unit and an energy acquisition unit; Among them, the sensor unit includes sensor modules respectively arranged at multiple sensor nodes of the transmission line; the low-power coordination unit includes a demand receiving module and a timing module connected to the controller unit and always kept in an activated state, and a state conversion module connected to the demand receiving module, the timing module and the sensor unit respectively, the state conversion module receives the data acquisition signal of the demand receiving module or the timing module, and converts the sensor unit connected thereto from a sleep state to an activated state, so that it maintains the startup state to collect logarithmic information; the controller unit is used to collect and process the corresponding data information, and transmit the data information through the communication unit; the communication unit is used to communicate with the background server, upload the data information to the background server, and simultaneously receive the background server instruction information to the controller unit; the positioning information unit is used to obtain the geographical location information of the sensor terminal; the energy acquisition unit includes an inductive energy acquisition module and a battery module, the inductive energy acquisition module directly draws power from the high-voltage wire through inductive energy acquisition, and combines with the battery module to power the equipment.

2. A transmission line terminal sensor monitoring system according to claim 1, characterized in that: The sensor module includes a voltage sensor module, a current sensor module, an acceleration sensor module and a temperature and humidity sensor module.

3. A transmission line terminal sensor monitoring system according to claim 2, characterized in that: The voltage sensor module adopts a D-dot voltage sensor, including a differential amplifier circuit, a filter circuit and a level raising circuit; the current sensor adopts a Rogowski coil current sensor, including an open flexible Rogowski coil and a matching integrator.

4. A transmission line terminal sensor monitoring system according to claim 2, characterized in that: The acceleration sensor module adopts the MPU6050 acceleration sensor, and the temperature and humidity sensor module adopts the SHT15 temperature and humidity sensor.

5. A transmission line terminal sensor monitoring system according to claim 2, characterized in that: The sensor module also includes a micro-meteorological sensor module and a tilt sensor module.

6. A transmission line terminal sensor monitoring system according to claim 1, characterized in that: The communication module is implemented by a GPRS wireless communication module.

7. A transmission line terminal sensor monitoring system according to claim 1, characterized in that: The positioning information unit is implemented using a GPS / Beidou dual-mode positioning module.

8. A transmission line terminal sensor monitoring system according to claim 1, characterized in that: The inductive energy acquisition module includes an energy acquisition CT, a front-end protection circuit, a rectifier and filter circuit, a power acquisition regulation circuit, an isolation voltage stabilization circuit and a power conversion circuit; the battery module adopts a lithium battery assembly, specifically including a lithium battery charging and discharging circuit, a lithium battery protection circuit and a lithium battery pack.

9. A transmission line terminal sensor monitoring system according to claim 1, characterized in that: The priority of the data acquisition signal of the demand receiving module is higher than the priority of the data acquisition signal of the timing module.

Images