A method for calculate that wind deviation distance of insulator string

A technology of insulator strings and calculation methods, applied in complex mathematical operations, measuring devices, instruments, etc., can solve problems such as large errors and errors, and achieve the effect of real and effective data, convenient data acquisition, and simple calculation process

Pending Publication Date: 2019-03-15
HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

However, this method will produce certain errors when measuring, and the mathematical formula used cannot fully reflect the relationship between the wind angle and the minimum distance. There are still many uncertain parameters, or some factors are estimated. value, so the error caused by this method will be large
[0004] To sum up, the method of measuring the wind deflection angle of insulator strings and using mathematical formulas to obtain the minimum distance between the conductor and the tower has large errors, so we need to find a simple and small error measurement method to replace this scheme

Method used

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  • A method for calculate that wind deviation distance of insulator string
  • A method for calculate that wind deviation distance of insulator string
  • A method for calculate that wind deviation distance of insulator string

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Embodiment 1

[0038] see figure 1 and Figure 10 , a method for calculating the windage distance of an insulator string, comprising the following steps:

[0039] S1. Obtain the windage angle of the insulator string of the transmission pole tower. Since the insulator string is generally connected to the transmission pole tower through a ball-end hanging ring, in this embodiment, the windage angle of the insulator string is obtained by setting an inclination sensor on the ball-end hanging ring , and at the same time, when it is inconvenient to install an inclination sensor, the existing windage calculation formulas for those skilled in the art can also be used to calculate the windage angle.

[0040] S2, calculating the wind deflection compensation coefficient of the transmission tower insulator string, the calculation method of the wind deflection compensation coefficient of the transmission tower insulator string includes the following steps:

[0041] S21. In order to simulate the windage...

Embodiment 2

[0057] The difference between this embodiment 2 and embodiment 1 is that 7, 9, and 14 pieces of 155mm insulators are respectively selected to form an insulator string. The data at 30°, 35°, and 40° are made into Table 2, and obtained as Figure 5 , Figure 6 , Figure 7 The compensation coefficient curve shown in Table 2 is as follows:

[0058] Table 2 Measurement data of 155mm insulator string

[0059]

[0060]

Embodiment 3

[0062] The difference between this embodiment 3 and embodiment 1 is that 7 or 14 insulators of 170 mm are selected to form an insulator string, because when 170 mm insulators form a 14-piece insulator string, the weight is too large, and it is difficult to achieve a windage angle of more than 30°. For the convenience of calculation, the data of the 170mm insulator string composed of 7 pieces are selected at the inclination angles of 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40° and the 170mm insulator string composed of 14 pieces The data of the strings at the inclination angles of 5°, 10°, 15°, 20°, 25°, and 30° are made into Table 3, and obtained as Figure 8 , Figure 9 The compensation coefficient curve shown in Table 3 is as follows:

[0063] Table 3 Measurement data of 170mm insulator string

[0064]

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Abstract

A method for calculate that wind deviation distance of insulator string include such steps as S1, obtaining the wind deviation angle of insulator string of transmission pole and tower, S2, calculatingthe wind deviation compensation coefficient of the insulator string of the transmission pole and tower; S3, calculating the theoretical value of the wind deviation distance of the insulator string ofthe transmission pole and tower; S4, obtaining the actual wind deviation distance of the transmission tower insulator string according to the wind deviation compensation coefficient of the transmission tower insulator string and the theoretical value of the wind deviation distance of the transmission tower insulator string. The invention obtains the wind deviation compensation coefficient by directly measuring the wind deviation angle through an inclination sensor, thereby obtaining the wind deviation compensation coefficient, the data is convenient to obtain, the data is real and effective,the calculation process is simple, and the method can be used in practice, and provides a direct and effective method for the wind deviation analysis of an overhead transmission line.

Description

technical field [0001] The invention relates to the field of high-voltage insulator tests, in particular to a method for calculating the windage distance of an insulator string. Background technique [0002] In recent years, affected by disastrous meteorological conditions, the frequency and intensity of wind deflection accidents of insulator strings on overhead transmission lines have increased significantly, which has caused huge economic losses and seriously affected the safe operation of the power grid. The wind deflection of insulator strings in transmission lines is the swing phenomenon of insulator strings under the action of external wind force, and the angle deviation generated by the hanging insulators during the swing process is called wind deflection angle. The formation of wind deflection of insulator strings is usually determined by two reasons: external wind force and transmission line structure. In the actual environment, the windage angle of the insulator s...

Claims

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Application Information

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IPC IPC(8): G06F17/10G01B11/02G01B21/22
CPCG06F17/10G01B11/02G01B21/22
Inventor 符传福姚冬陈钦柱赵海龙陈川刚邢博宇
Owner HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST
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