A method and device for monitoring distribution network lines in a windy environment
A monitoring device and distribution network technology, applied in tension measurement, instrumentation, design optimization/simulation, etc., can solve the problems of unable to monitor the distribution network line in real time, accurately judge and give timely warning
Active Publication Date: 2022-03-01
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology
[0005] The purpose of the present invention is to provide a distribution network line monitoring method and device in a windy environment to solve the technical problems in the prior art that the distribution network line cannot be monitored in real time, accurately judged and timely warned
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[0048] Explanation of terms:
[0049] MCU: Microcontroller Unit (MCU), also known as SingleChip Microcomputer (SingleChip Microcomputer) or single-chip microcomputer, is to appropriately reduce the frequency and specifications of the Central Processing Unit (Central Process Unit; ), counter (Timer), USB, A / D conversion, UART, PLC, DMA and other peripheral interfaces, and even the LCD drive circuit are integrated on a single chip to form a chip-level computer for different combination control for different applications.
[0050] Tension-resistant tower and straight-line tower: There must be two kinds of pole towers if the power line is to be overhead, that is, one is a straight-line tower and the other is a strain-resistant tower. load. The force pulled up longitudinally along the wire is all hung on the tension tower, that is, the tension tower must bear the tension load after the power line is overhead.
[0051] ANSYS: ANSYS software is a large-scale general-purpose finite ...
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The invention provides a distribution network line monitoring method and device in a windy environment, wherein the method includes: installing a monitoring device at the wire suspension point of the distribution network line, measuring the tension of the suspension point, and giving an early warning when the tension is greater than the allowable tension of the wire ;Establish the finite element model of the distribution network line, and establish the relationship curve between the wind speed, the tension of the suspension point and the bending moment of the pole root corresponding to different wind speeds; obtain the corresponding bending moment of the pole root according to the measured tension of the suspension point and the relationship curve ; When the bending moment at the root of the pole is greater than the maximum bending moment, an early warning will be given. The invention only needs to install a set of monitoring devices in one tension section, and the installation cost is low; the tension of the suspension point of the wire is measured in real time, and the relationship between the wind speed, the tension of the suspension point of the wire, and the bending moment at the root of the pole is respectively established according to the finite element model of the distribution network line. The relationship curve, the bending moment at the root of the pole can be obtained through the tension of the suspension point, the state of the pole can be accurately judged, and an early warning can be given in time when the distribution network line is in danger.
Description
technical field [0001] The invention relates to the technical field of power grid safety monitoring, in particular to a method and device for monitoring distribution network lines in a windy environment. Background technique [0002] In the coastal areas of our country, a large number of distribution lines are damaged in typhoons and other strong wind disasters every year, and accidents such as tower collapse and short-circuit occur, causing large-scale power outages for users. In a windy environment, it is usually due to the excessive bending moment of the pole caused by the wind load that the pole is inverted, the pole is broken, or the wire is broken. Therefore, in typhoon-prone areas, it is necessary to monitor the wire tension, pole bending moment, and wind speed, and issue early warning signals in time, so that the power supply network dispatching department and emergency repair department can make decisions to reduce power outage losses and shorten post-disaster repai...
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IPC IPC(8): G01L5/08G06F30/23G06F119/14G06F113/04
CPCG01L5/08G06F30/23G06F2119/14G06F2113/04
Inventor 罗啸宇聂铭谢文平肖凯刘小璐黄正
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID