CN-121984225-A - Overhead transmission line icing monitoring system and method based on time automatic scheduling and satellite communication

CN121984225ACN 121984225 ACN121984225 ACN 121984225ACN-121984225-A

Abstract

The invention provides an overhead transmission line icing monitoring system and method based on time automatic scheduling and satellite communication, wherein the monitoring system comprises an icing monitoring terminal, a satellite terminal, a router, a Tiantong module control unit, a relay and a field power supply unit, the monitoring method is characterized in that a microprocessor in a Tiantong module control unit executes a time automatic scheduling algorithm, and the algorithm controls the on-off of a relay according to three-level priority logic, so that the working power supplies of a high-power-consumption satellite terminal and an icing monitoring terminal are accurately managed. The invention solves the problem of monitoring data feedback in the area without public network, greatly reduces the overall power consumption of the system from more than 30W to about 10W, simultaneously supports the remote flexible adjustment of the operation strategy through the short message, and realizes the automatic monitoring of the icing state along the remote transmission line, which is economical, reliable and can be remotely controlled.

Inventors

WANG YONG
ZHANG JIANFENG
GUO LEI
WU YANG

Assignees

江苏凌鹊卫星应用技术有限公司

Dates

Publication Date: 20260505
Application Date: 20260129

Claims (10)

1. An overhead transmission line icing monitoring system based on time automatic scheduling and satellite communication is characterized by comprising: the icing monitoring terminal is arranged on the overhead transmission line and used for collecting line icing state information; The satellite terminal is used for establishing a communication link with the remote monitoring platform in the public network-free area; the router is connected with the icing monitoring terminal and the satellite terminal to form a field local area network; the on-site power supply unit is used for providing a main power supply; a power connection unit for distributing a main power; The Tiantong module control unit comprises a microprocessor, a Tiantong module and a power supply management module, wherein the microprocessor is configured to execute a time automatic scheduling algorithm, a remote control instruction is acquired through the Tiantong module, and controls the on-off of the relay according to the current time and the preset rule to manage the power supply states of the satellite terminal and the icing monitoring terminal, the power management module is used for converting a main power supply into working voltages required by the microprocessor and the Tiantong module; And the relay is connected in series on a line of the power supply wiring unit for supplying power to the satellite terminal and the icing monitoring terminal and is controlled by the Tiantong module control unit.
2. The overhead transmission line icing monitoring system based on time automatic scheduling and satellite communication according to claim 1, wherein the icing monitoring terminal is internally provided with an image acquisition module and is connected to a router through a wireless network.
3. An overhead transmission line icing monitoring system based on time automated scheduling in communication with a satellite according to claim 1 wherein said satellite terminals are connected to said router via a wired network.
4. The overhead transmission line icing monitoring system based on time automatic scheduling and satellite communication according to claim 1, wherein the on-site power supply unit comprises a solar panel and a storage battery and is used for providing a 24V direct current main power supply, and the power supply wiring unit is used for distributing the 24V direct current main power supply to a router, a space communication module control unit, an icing monitoring terminal and a satellite terminal.
5. The overhead transmission line icing monitoring system based on time automatic scheduling and satellite communication according to claim 1, wherein the microprocessor is a single-chip microcomputer and is connected with the relay through a digital output port of the single-chip microcomputer.
6. An overhead transmission line icing monitoring method based on time automatic scheduling and satellite communication is characterized by being applied to the monitoring system of any one of claims 1-5, wherein the method is characterized in that the microprocessor circularly executes a time automatic scheduling algorithm and comprises the following steps: Step one, reading a short message state M msg of a Tiantong module, and obtaining the time T= (H, M), wherein H is H, H is [0,23], M is min, and M is [0,59]; step two, sequentially executing time priority order judgment to determine the on-off state V 24V of the controlled 24V direct current main power supply, wherein the time priority order corresponds to the formula as follows: ; Wherein, V 24V is the on-off state of the controlled 24V direct current main power supply, H is hour, M is minute, T start is the initial hour, T end is the end hour, T start , T end E [0,23], when V 24V =0, it is off, when V 24V =1, it is on; And thirdly, controlling the relay to continue to act according to the state value of V 24V so as to manage the power supply to the satellite terminal and the icing monitoring terminal.
7. The method for monitoring ice coating on overhead transmission lines based on time automatic scheduling and satellite communication according to claim 6, wherein in the second step, a corresponding time parameter is selected according to the current time T and according to the short message state M msg , and a power control decision is generated according to the following time priority order: A first priority, if m=5, generating a power-off decision; a second priority, if m=55, generating a power-on decision; third priority, if none of the above is satisfied, then: a) If M msg =1, performing period judgment by using the remote time control parameter T param =[T start , T end analyzed from the short message; b) If M msg =0, using a default running parameter T default preset in the system to perform period judgment; c) And judging whether the current time T is in the defined operation period according to the selected parameters, if so, generating a power-on decision, otherwise, generating a power-off decision.
8. The method for monitoring ice coating on overhead transmission lines based on automatic time scheduling and satellite communication according to claim 7, wherein the logic for determining within the defined operation period of the third priority determination c) in the second step is defined as, for the remote time control parameter T param = [T start , T end : When T start ≤T end is met, if T start ≤H < T end is met, judging that the time is within the period; When T start > T end is satisfied, (H≥T start ) or (H < T end ), it is determined to be within the period.
9. The method for monitoring ice coating on an overhead transmission line based on automatic time scheduling and satellite communication according to claim 6, wherein if the system operation period crosses zero, the operation period judgment logic is adjusted to be H e [ T start , 23] ∪[0,T end ], and the corresponding formula is as follows: ; Wherein, V 24V is the on-off state of the controlled 24V direct current main power supply, H is hour, M is minute, T start is the initial hour, T end is the end hour, T start , T end E [0,23], when V 24V =0, it is off, when V 24V =1, it is on.
10. The method for monitoring ice coating on an overhead transmission line based on automatic time scheduling and satellite communication according to claim 6, wherein the period for the microprocessor to circularly execute the automatic time scheduling algorithm is one minute.

Description

Overhead transmission line icing monitoring system and method based on time automatic scheduling and satellite communication Technical Field The invention belongs to the technical field of operation safety monitoring of power systems, and particularly relates to an overhead transmission line icing monitoring system and method based on automatic time scheduling and satellite communication. Background The overhead transmission line is easy to be iced in winter, and accidents such as line galloping, breakage, tower falling and the like can be caused when the overhead transmission line is severe, so that the safety of a power grid is threatened. Currently, monitoring the icing state of overhead lines mainly relies on an image monitoring device installed on the line, and the collected image data is transmitted back to a monitoring center through a local WiFi or public mobile communication network (e.g. 4G/5G). However, a large number of overhead lines pass through remote areas such as mountain areas and wild areas, and the areas are not covered by public mobile network signals generally, and a stable local WiFi network environment is also lacking, so that key image data collected by a monitoring terminal cannot be returned in real time, and a monitoring blind area is formed. In order to solve the problem that the icing monitoring signal cannot be returned in real time, a satellite terminal is adopted as a return channel in the prior art, the satellite terminal can realize communication in a signal-free area, but the conventional satellite terminal has higher power consumption, usually 30W or even higher, and a large-capacity solar cell panel and a large-capacity storage battery are required to be equipped for ensuring long-term continuous operation of the satellite terminal in a commercial power-free environment, so that the system cost, the volume and the weight are greatly increased, the deployment flexibility and the reliability of the satellite terminal in a complex field environment are reduced, and the large-scale popularization and the application are difficult. Disclosure of Invention Aiming at the problems, the invention provides an overhead transmission line icing monitoring system and method based on time automatic scheduling and satellite communication, which solve the problems that icing monitoring data cannot be returned and the overall power consumption of the monitoring system is too high in a coverage area without a public mobile network signal, and realize low-power consumption, reliable, remote and controllable monitoring of an icing state. In order to achieve the above purpose, the present invention adopts the following specific scheme: The invention provides an overhead transmission line icing monitoring system based on time automatic scheduling and satellite communication, which comprises the following components: the icing monitoring terminal is arranged on the overhead transmission line and used for collecting line icing state information; The satellite terminal is used for establishing a communication link with the remote monitoring platform in the public network-free area; the router is connected with the icing monitoring terminal and the satellite terminal to form a field local area network; the on-site power supply unit is used for providing a main power supply; a power connection unit for distributing a main power; The Tiantong module control unit comprises a microprocessor, a Tiantong module and a power supply management module, wherein the microprocessor is configured to execute a time automatic scheduling algorithm, a remote control instruction is acquired through the Tiantong module, and controls the on-off of the relay according to the current time and the preset rule to manage the power supply states of the satellite terminal and the icing monitoring terminal, the power management module is used for converting a main power supply into working voltages required by the microprocessor and the Tiantong module; And the relay is connected in series on a line of the power supply wiring unit for supplying power to the satellite terminal and the icing monitoring terminal and is controlled by the Tiantong module control unit. As a preferable scheme, the icing monitoring terminal is internally provided with an image acquisition module, and is connected to the router through a wireless network. As a preferred solution, the satellite terminal is connected to the router through a wired network. As a preferable scheme, the on-site power supply unit comprises a solar panel and a storage battery and is used for providing a 24V direct current main power supply, and the power wiring unit is used for distributing the 24V direct current main power supply to a router, a space communication module control unit, an icing monitoring terminal and a satellite terminal. As a preferable scheme, the microprocessor is a singlechip and is connected with the relay through a digital output port of the singlechi