Optimization method for direct current heating parameters of self-heating transmission wires embedded in homogeneous materials
A technology of transmission wire and uniform material, applied in the field of DC heating parameter optimization of self-heating transmission wire, can solve the problem of accurate control of ice-melting power and ice-melting working conditions of non-self-melting ice-melting wire, and does not explain the calculation of online anti-icing and ice-melting parameters. methods, failure to optimize working parameters, etc., to achieve the effect of helping stability analysis, controllable work, and ensuring the safety of electrical equipment
Active Publication Date: 2021-08-17
SICHUAN UNIV +1
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However, the above-mentioned patent documents do not explain the calculation method of the working parameters of the online anti-icing and melting ice, let alone optimize the working parameters. Therefore, it is still impossible to accurately control the ice-melting power and the ice-melting working conditions of the self-melting ice conductor.
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[0060] The self-heating power transmission wire involved in the present invention is a self-melting ice wire designed according to the method of patent CN201610867150.1 "A self-melting ice conductor and ice melting equipment". The whole wire heating material analyzed is a material whose properties are the same everywhere.
[0061] See attached figure 1 .
[0062] Divide the self-heating transmission wire with length La evenly into any even-numbered segments, set the total number of segments as 2n, then the length of each segment is Ld, Ld=La / 2n; the segmented wires are called unit wires. La is an arbitrary length transmission wire, and n is a non-zero natural number. Each segmented wire is called an element wire. The number of unit wires is represented by a natural number, which is an integer of 1, 2, 3, 4, ... 2n-3, 2n-2, 2n.
[0063] The segment of the wire is represented by a dotted line, and the dotted line is called a node, and the node number is represented by a natu...
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A method for optimizing DC heating parameters of self-heating transmission wires embedded in homogeneous materials. The self-made heat transmission wire is evenly divided into 2n arbitrary even-numbered unit wires, and the segments are nodes. A DC power supply is added between the inner conductor and the outer conductor of the wire, the negative electrode is a potential reference point, and the potential reference point is connected to the outer conductor. The current flowing through the inner conductor and outer conductor of each unit wire is equal, and the voltage of the inner conductor of the unit wire is taken as the average voltage. The analysis method includes the distribution analysis of the DC heating parameters of the self-made thermal transmission wire and the selection of the operating parameters. The heating parameters include node current, conductor voltage, current flowing through the heating material, resistance and the sum of internal and external conductor power of the unit wire, heating material power, and total power. The selection of operating parameters includes the maximum current allowed to flow, the minimum power supply voltage, the heating material power of the unit wire, and the voltage increment parameters. According to the parameter analysis, the present invention obtains the optimal parameters of the wire running, makes the anti-icing and melting work controllable, and contributes to the stability of the power grid.
Description
[0001] (1) Technical field [0002] The invention relates to an online ice-melting method for power transmission lines, in particular to a method for optimizing DC heating parameters of self-heating transmission lines embedded in uniform materials. [0003] (2) Background technology [0004] With the development of society and economy, in the environment of increasing power load applications, the requirements for exposed power lines are getting higher and higher. In the cold winter, the lines in many areas will freeze, causing damage to the lines. When the icing exceeds the bearing capacity of the line, serious accidents such as disconnection will occur. Therefore, deicing of power transmission lines in winter is essential and very important. In the prior art, ice melting technology is constantly improving. Application number CN201610867150.1 "A self-melting ice conductor and ice-melting equipment" and application number CN201810370549.8 "Self-heating conductor and heating e...
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IPC IPC(8): G06Q10/04G06Q50/06H05B3/56
CPCG06Q10/04G06Q50/06H05B3/56
Inventor 莫思特谢和平刘天琪李碧雄
Owner SICHUAN UNIV