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Simulation calculation method of induced voltage and current of newly-built HVDC transmission line based on PSCAD

A technology for DC transmission lines and transmission lines, which is applied in the directions of computing, electrical digital data processing, special data processing applications, etc., and can solve problems such as worker safety threats

Pending Publication Date: 2018-12-11
STATE GRID ANHUI ELECTRIC POWER +1
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Problems solved by technology

Such high current and voltage will pose a great threat to the safety of workers during line erection

Method used

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  • Simulation calculation method of induced voltage and current of newly-built HVDC transmission line based on PSCAD

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] If the DC transmission line is erected in the corridor of the existing AC transmission line at the same time, because it is parallel to the running line, there will be complex electrostatic induction and electromagnetic induction between the charged conductor and the newly built line, and a relatively high induced voltage and induction will be generated during the construction process. current. Studies have shown that the induced voltage on construction lines adjacent to UHV AC lines can reach tens of kilovolts, and the induced current can reach tens of amperes. It is very important to evaluate the induced voltage and induced current on the construction overhead lines. The invention combines PSCAD software to simulate the induced current and induced voltage.

[0023] PSCAD is a powerful and flexi...

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Abstract

The invention provides a simulation calculation method of induced voltage and current of a newly-built HVDC transmission line based on PSCAD. Through building of a PSCAD simulation model, the transmission line relevant parameters in PSCAD software are set according to of obtained transmission line parameters , ground parameters, transmission tower parameters and parameters of soil resistivity along the transmission line, a DC model of the transmission line and a model of the new DC circuit are established, and three-phase voltage source models are established at both ends of the live transmission line to simulate and calculate the electrostatic induction voltage, electrostatic induction current, electromagnetic induction voltage and electromagnetic induction current of the new HVDC transmission line. The method can accurately evaluate the induced voltage and induced current on the construction line, timely take the safety measures, and improve the safety operation ability of the transmission line staff.

Description

technical field [0001] The invention belongs to the field of electromagnetic compatibility simulation calculation of electric power system, and in particular relates to a simulation calculation method of induced voltage and current of a new direct current transmission line based on PSCAD. Background technique [0002] With the continuous expansion of the transmission network scale, the available overhead line corridor resources are becoming less and less. Therefore, making full use of the existing line corridors and erecting DC transmission lines in the existing AC transmission line corridors will bring considerable economic and social benefits. During the construction and erection of new lines, because they are parallel to the running lines, there are complex electrostatic induction and electromagnetic induction between the charged conductors and the newly built lines, which will generate quite high induced voltages and induced currents during the construction process, seri...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 刘承志刘大平任红昕郭鑫张永奈洪海雁韩清江史磊金德磊罗冠群罗继红黄涛涛刘国强韩启云关绍峰李迎春
Owner STATE GRID ANHUI ELECTRIC POWER
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