Distribution network line monitoring method and device in strong wind environment
A distribution network and line technology, which is applied in the field of distribution network line monitoring in a windy environment, can solve the problems of unable to monitor the distribution network line in real time, accurately judge and give timely warning
Active Publication Date: 2021-04-23
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 strong wind environment. The method comprises the following steps: installing a monitoring device at a wire suspension point of a distribution network line, obtaining the tension of the suspension point through measurement, and carrying out the early warning when the tension is greater than the allowable tension of a wire; establishing a finite element model of a distribution network line, and establishing a relation curve of corresponding wind speeds, suspension point tension and electric pole root bending moment under different wind speeds; obtaining a corresponding electric pole root bending moment according to the measured suspension point tension and the relation curve; and when the root bending moment of the electric pole is greater than the maximum bending moment, performing early warning. According to the invention, only one set of monitoring device needs to be installed in one strain section, and the installation cost is low; and the tension of a wire suspension point is measured in real time, relation curves of the wind speed, the tension of the wire suspension point and the root bending moment of an electric pole are established according to a finite element model of a distribution network line, the root bending moment of the electric pole can be obtained through the tension of the suspension point, the state of the electric pole can be accurately judged, and early warning can be conducted in time when the distribution network line is dangerous.
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