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750kV common-tower four-loop power transmission line linear tower type and phase sequence selection method and device thereof

A technology for straight pole towers and transmission lines, which is applied in the direction of circuit devices, cable installation devices, cable installation, etc., can solve the problem of high passing voltage, achieve the effect of small induced voltage and current, and ensure the safe and stable operation of the line

Active Publication Date: 2019-04-19
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0005] In view of this, the present invention proposes a 750kV same-tower four-circuit transmission line straight pole tower type and its phase sequence selection method and device, aiming at solving the problem of high line overvoltage level of the current same-tower four-circuit transmission line straight pole tower

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  • 750kV common-tower four-loop power transmission line linear tower type and phase sequence selection method and device thereof
  • 750kV common-tower four-loop power transmission line linear tower type and phase sequence selection method and device thereof
  • 750kV common-tower four-loop power transmission line linear tower type and phase sequence selection method and device thereof

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Embodiment Construction

[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0033] Method example:

[0034] see figure 1 , figure 1 The flow chart of the straight-line pole-tower type and phase sequence selection method of the 750k...

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Abstract

The invention provides a750kV common-tower four-loop power transmission line linear tower type and a phase sequence selection method and device thereof. The method comprises the following steps: a calculation step: respectively calculating the secondary arc current, the recovery voltage and the induced voltage and current of a plurality of pre-selected common-tower four-loop power transmission line linear tower types with different tower types and different phase sequences; and a determination step: determining the optimal tower type and the optimal phase sequence of the common-tower four-looppower transmission line straight line pole towers according to the secondary arc current, the recovery voltage and the induced voltage and current of each common-tower four-loop power transmission line straight line pole tower. According to the method, firstly, the optimal phase sequence is determined in the same tower type, then the optimal tower type is determined in multiple different tower types with the optimal phase sequence, it can be guaranteed that the secondary arc current, the recovery voltage and the induced voltage and current of the optimal tower type are all minimum, the overvoltage level influence of the optimal tower type is reduced to the minimum, and safe and stable operation of a line is guaranteed.

Description

technical field [0001] The invention relates to the technical field of UHV engineering simulation analysis, in particular to a 750kV same-tower four-circuit transmission line straight pole-tower type and a phase sequence selection method and device. Background technique [0002] At present, the 750kV power transmission system in Northwest my country is developing rapidly, and the line construction has gradually realized networkization. Many lines planned and constructed pass through the tense areas of transmission corridors around the city. Among them, the current transmission line area in the Hexi Corridor, an important transmission channel in Northwest China, is also particularly tight. . Therefore, in order to alleviate the tension of 750kV transmission corridors in some parts of the northwest and further improve the economics of project construction and operation, it is necessary to further study large-capacity 750kV transmission technologies with larger transmission capa...

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Application Information

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IPC IPC(8): H02G1/00H02J3/00
CPCH02G1/00H02J3/00H02J2203/20
Inventor 查志鹏娄颖范冕万磊李振强霍锋刘琴王森
Owner CHINA ELECTRIC POWER RES INST