Real-time online evaluation method and system for safety state of power transmission tower
A technology for safe state and power transmission towers, applied in electrical digital data processing, constraint-based CAD, special data processing applications, etc. problems with operation
Active Publication Date: 2016-04-06
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +1
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However, transmission towers that have been used for a long time currently account for a considerable proportion of the current domestic transmission network. Once the transmission tower is damaged, it will directly affect the normal operation of the entire power system, not only causing huge economic losses, but even causing the paralysis of the entire power supply system.
The construction and maintenance of large-scale transmission lines requires a lot of manpower, material and financial resources, and the comprehensive monitoring and evaluation methods lagging behind the construction and development of transmission lines make it impossible for management and decision-makers to make objective and accurate assessments of their overall performance. Therefore, it is also impossible to adopt low-cost, high-efficiency maintenance methods
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[0038] In order to better understand the technical solutions of the present invention, the present invention is further described below with reference to the accompanying drawings.
[0039] like figure 1 As shown, a real-time online method for evaluating the safety status of a transmission tower includes:
[0040] Step 1. Use the detection instrument installed on the transmission tower to collect wind speed, wind direction, wire ice thickness and temperature information and transmit it to the branch processor;
[0041] Step 2. Use the branch processor to establish a finite element model of the coupling system of the transmission tower and the tower;
[0042] Step 3. Load the information collected in step 1 into the finite element model of the coupling system of transmission towers and towers established in step 2;
[0043] Step 4. Use the calculation module in the sub-processor to obtain the force of the overall structure of the transmission line according to Step 3, and ext...
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The invention discloses a real-time online evaluation method and system for a safety state of a power transmission tower. The method comprises: acquiring wind speed, wind direction, lead wire icing thickness and temperature information by utilizing a detection instrument mounted on the power transmission tower, and transmitting the information to a sub-processor; establishing a finite element model of a line-tower coupling system of the power transmission tower by utilizing the sub-processor; loading the acquired information into the finite element model of the line-tower coupling system of the power transmission tower established in the step 2; by utilizing a calculation module in the sub-processor, obtaining an integral structure stress condition of a power transmission line according to the step 3, and performing extractive analysis on counter point displacement, a slenderness ratio, tension and bending stresses, compressed bar stability and axial force; and transmitting an extractive analysis result in the step 4 to a main processor through a wireless network by the sub-processor. According to the real-time online evaluation method and system, a pre-warning signal can be triggered when the power transmission line is in special climate or a running condition of the line is seriously abnormal by monitoring and evaluating the structural state of the power transmission tower, thereby providing basis and guidance for safety operation maintenance and management decision of the power transmission line.
Description
technical field [0001] The invention relates to the field of transmission line equipment maintenance, in particular to a method and a system for real-time online assessment of the safety state of a transmission tower. Background technique [0002] Transmission towers are an important part of overhead transmission lines, and play the role of supporting conductors, ground wires and other accessories. In recent years, the installed capacity and voltage level of the State Grid have been continuously improved, and the transmission towers have developed rapidly in the direction of towering, large-span and ultra-high voltage. Higher requirements are placed on the reliability and economy of the tower. However, transmission towers that have been in use for a long time currently account for a considerable proportion of the current domestic transmission network. With the increase in service life, due to the effects of natural factors such as the environment, climate, and human acciden...
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Login to View More IPC IPC(8): G06F17/50
CPCG06F30/23G06F2111/04G06F2113/16G06F2119/04
Inventor 李勃朱毅贾善杰李琨董文椠靳海军赵鹏飞李钰王斐斐
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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