Method for optimizing direct current weak receiving terminal power grid static var compensator (SVC) dynamic reactive power compensation configuration measures

A weak receiving end, power grid technology, applied in reactive power adjustment/elimination/compensation, flexible AC transmission system, etc., to achieve the effect of improving transient voltage support capability and dynamic reactive power adjustment capability

Active Publication Date: 2013-05-08
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

There may be voltage stability problems during the oper

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  • Method for optimizing direct current weak receiving terminal power grid static var compensator (SVC) dynamic reactive power compensation configuration measures
  • Method for optimizing direct current weak receiving terminal power grid static var compensator (SVC) dynamic reactive power compensation configuration measures
  • Method for optimizing direct current weak receiving terminal power grid static var compensator (SVC) dynamic reactive power compensation configuration measures

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Embodiment Construction

[0038] A method for optimizing the SVC dynamic reactive power compensation configuration measures of the DC weak receiving end power grid, comprising:

[0039] The first step is to analyze the operating characteristics of the Central Tibet Power Grid after the Qinghai-Tibet DC DC is put into operation

[0040] (1) Analyze the power supply, grid structure, load, DC construction and operation of the central Tibet power grid, focusing on the newly put into operation units, main transformers, lines and their impact on system voltage stability.

[0041] (2) Calculate the short-circuit ratio analysis of the Qinghai-Tibet DC inverter station, evaluate the strength relationship of the AC-DC system and the voltage support of the AC system to the DC system.

[0042] (3) Analyze the operating characteristics of the power grid under the outage of the 9E gas turbine, mainly analyzing the deterioration effect of the DC system absorbing a large amount of reactive power on the voltage of the ...

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Abstract

The invention provides a method for optimizing direct current weak receiving terminal power grid static var compensator (SVC) dynamic reactive power compensation configuration measures. The method comprises the following steps that 1, analyzing running characteristics of a direct current weak receiving terminal power grid after direct current is put into operation; 2, analyzing effects of an added SVC on voltage recovery after fault; and 3, analyzing effects of the added SVC on stability characteristics of the power grid. The method for optimizing direct current weak receiving terminal power grid static var compensator (SVC) dynamic reactive power compensation configuration measures aims at actual running to build a complete middle Tibet power grid model. Effects on power grid voltage support capacity and direct current transmission power after an SVC is put into operation are analyzed according to change of a power grid structure and running characteristics. The power grid SVC dynamic reactive power compensation configuration measures are disclosed to improve voltage stability of middle Tibet power grids and to improve electric receiving capacity of the power grids. Effectiveness of the disclosed measures can be verified in a simulation mode.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a method for optimizing SVC dynamic reactive power compensation configuration measures of a DC weak receiving end power grid. Background technique [0002] The DC weak receiving-end power grid has obvious characteristics such as small scale of the receiving-end grid and weak grid support, as well as the obvious shortcomings of "large DC and weak AC", which restricts the level of DC transmission power by many factors. [0003] The transient voltage stability of the receiving system is usually closely related to three factors: the transmission limit of the transmission network, the dynamic characteristics of the load, and the voltage support of the receiving system. [1] . There may be voltage stability problems during the operation of large-scale DC power receiving end systems [2] . Especially in the case of large DC receiving power, voltage stability still constitutes a...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/12Y02E40/10
Inventor 徐式蕴赵兵孙华东屠竞哲易俊杨钊
Owner CHINA ELECTRIC POWER RES INST
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