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Phase correction method for power flow control system and power flow control system

A control system and power flow technology, which is applied in the phase correction method of the power flow control system and the field of power flow control system, can solve the problem that it is difficult to ensure that the voltage and the line current are in phase, and it is impossible to achieve accurate adjustment and compensation of the control voltage. Problems such as low power factor

Active Publication Date: 2019-01-04
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a phase correction method of a power flow control system and a power flow control system to solve the problem that the existing power flow control system presents a state of low power factor, and it is difficult to ensure that the voltage and the line current are completely in phase. Problems in technologies that do not work well to achieve accurate regulation and compensation of the control voltage

Method used

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  • Phase correction method for power flow control system and power flow control system
  • Phase correction method for power flow control system and power flow control system
  • Phase correction method for power flow control system and power flow control system

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Embodiment 1

[0051] An embodiment of the present invention provides a phase correction method for a power flow control system, such as figure 1 shown, including:

[0052] S11. Obtain current input parameters of the transmission line. The transmission line here can be the transmission line on the grid side or the transmission line on the valve side. Therefore, the current input parameters on the grid side can be collected through the acquisition device, and the current input parameters on the valve side can also be collected by the acquisition device. The current input The parameters are mainly collected by means of electromagnetic current measuring devices or electronic current measuring devices.

[0053]S12. Decompose the current input parameter to obtain a first current input parameter component and a second current input parameter component. Specifically, the current input parameter is decomposed by d-q transformation to obtain a first current input component and a second current inpu...

Embodiment 2

[0067] Embodiment 2 of the present invention provides a phase correction method for a power flow control system, such as image 3 shown, including:

[0068] S21. Obtain voltage input parameters of the transmission line. The transmission line here can be the transmission line on the grid side or the transmission line on the valve side. Therefore, the voltage input parameters on the grid side can be collected through the acquisition device, and the voltage input parameters on the valve side can also be collected by the acquisition device. The voltage input The parameters are mainly collected by electromagnetic voltage measuring devices or electronic voltage measuring devices.

[0069] S22. Decompose the voltage input parameter into a first voltage input parameter component and a second voltage input parameter component. Specifically, the voltage input parameter is decomposed by d-q transformation to obtain a first voltage input component and a second voltage input parameter c...

Embodiment 3

[0084] An embodiment of the present invention provides a computer-readable storage medium, on which computer instructions are stored, and when the instructions are executed by a processor, the steps of the phase correction method of the power flow control system in Embodiment 1 are implemented; or the power flow in Embodiment 2 Steps in the phase correction method of the control system. The storage medium also stores current input parameters, first current input parameter components, second current input parameter components, voltage phase correction coefficients, and voltage correction parameters. Or a voltage input parameter, a first voltage input parameter component, a second voltage input parameter component, a current phase correction coefficient and a current correction parameter.

[0085] Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a flash memory (Fla...

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Abstract

The invention discloses a phase correction method of a power flow control system and a power flow control system. The method includes obtaining current input parameters of a power transmission line; decomposing the current input parameters to obtain a first current input parameter component and a second current input parameter component; Calculating a current phase correction coefficient from thefirst current parameter component and the second current parameter component; Acquiring voltage control parameters of the output of the power flow control system; According to the current phase correction coefficient and voltage control parameters, the product of the two parameters is calculated to obtain the voltage correction parameters. The invention can avoid the problem that the power flow control system is prone to oscillation when the power flow control system presents a low power factor state. Therefore, the phase correction method of the power flow control system of the invention canimprove the stability of the power flow control system.

Description

technical field [0001] The invention relates to the technical field of power system control, in particular to a phase correction method of a power flow control system and the power flow control system. Background technique [0002] In the power system, in order to make more reasonable use of the existing transmission and distribution equipment, the flexible AC transmission system (FACTS) has received unprecedented attention and development. Flexible AC transmission equipment can effectively improve the flexibility and controllability of the power system, and the unified power flow controller (UPFC) and the static synchronous series compensator (SSSC) are series-type AC flexible transmission (FACTS) devices, due to the same There is generally a phase difference between the current and the voltage in the transmission line, which is easy to affect the stable operation of the power system. Therefore, by injecting a series controllable voltage perpendicular to the current of the ...

Claims

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Application Information

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IPC IPC(8): H02J3/06
CPCH02J3/06
Inventor 尉志勇陆振纲邓占锋王剑锋赵国亮马小光王英沛蔡林海宋洁莹
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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