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Comprehensive voltage control method and system for UHV half-wavelength power transmission system

A voltage control method and power transmission system technology, applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc., can solve the problems of endangering the safe and reliable operation of the power system, destroying line insulation, etc., and achieve a reasonable comprehensive voltage control scheme and engineering application Strong, fast and accurate results

Active Publication Date: 2020-01-03
SHANDONG UNIV
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AI Technical Summary

Problems solved by technology

When the power factor of the UHV half-wavelength transmission line is low, it will cause local steady-state overvoltage along the line, and in severe cases, damage the line insulation and endanger the safe and reliable operation of the power system.

Method used

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  • Comprehensive voltage control method and system for UHV half-wavelength power transmission system
  • Comprehensive voltage control method and system for UHV half-wavelength power transmission system
  • Comprehensive voltage control method and system for UHV half-wavelength power transmission system

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Embodiment Construction

[0065] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0066] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0067] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses an extra-high voltage half-wavelength power transmission system integrated voltage control method and system. The method comprises the steps that original data of an extra-highvoltage half-wavelength power transmission system is acquired; initialization setting is carried out before voltage control; leading node voltage adjustment, half-wavelength line transmission power factor improvement and reasonable distribution for electric generator reactive output are taken as a secondary voltage control objective, a voltage control optimization model is constructed, and a linear objective programming is utilized for solving; a coordinated relationship between continuous and discrete control variables is considered, and a capacitance\electric reactor switching principle based on a running mode is applied; a voltage control plan is verified, it is determined whether or not actual system voltage control requirements are satisfied. The method and system take the leading node voltage adjustment, the half-wavelength line transmission power factor improvement and the reasonable distribution for electric generator reactive output as the secondary voltage control objective,have pertinency, and have a wide use range.

Description

technical field [0001] The invention relates to a comprehensive voltage control method and system for an UHV half-wavelength power transmission system. Background technique [0002] China has formed six AC synchronous power grids in North China-Central China, East China, Northeast China, Northwest China, South China, and Tibet. Considering the reverse distribution pattern of energy resources and loads, large-scale power transmission is still an important direction for power grid development. In the future, two large synchronous power grids in the east and west will be built on the basis of 6 synchronous power grids. Through the interconnection of multi-circuit UHV transmission lines, a power grid pattern with clear structure of sending and receiving ends and coordinated development of AC and DC will be formed. Focusing on the layout of clean energy development, realizing a wider range of water and fire mutual aid, wind and solar complementarity, large-scale transmission and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/16H02J3/18
CPCH02J3/16H02J3/1864Y02E40/30
Inventor 刘玉田田浩
Owner SHANDONG UNIV
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