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Method of confirming parameters of distributed power flow controller system

A technology of power flow controller and system parameters, which is applied in the field of power system and power electronics, can solve problems such as the lack of methods for determining system parameters of distributed power flow controllers, and achieve the effect of high reliability and simple steps

Inactive Publication Date: 2013-05-15
WUHAN UNIV OF TECH
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Problems solved by technology

However, there is still a lack of methods to determine the parameters of the distributed power flow controller system

Method used

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  • Method of confirming parameters of distributed power flow controller system
  • Method of confirming parameters of distributed power flow controller system
  • Method of confirming parameters of distributed power flow controller system

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Embodiment Construction

[0019] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] see Figure 1-Figure 4 , a method for determining system parameters of a distributed power flow controller, which includes the following steps:

[0021] The first step is to establish a topology model of the distributed power flow controller applied to the power system, and determine the capacity of the distributed power flow controller based on the size of the line flow that needs to be compensated in the power system; the capacity of the distributed power flow controller includes string, The capacity of the converter on the parallel side, where the capacity of the converter on the series side is S se Equal to the third harmonic power absorbed by the series-side converter from the line, the capacity of the parallel-side converter In the formula, P sh is the third harmonic active power provided by the parallel side converter to the series side...

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Abstract

The invention relates to a method of confirming parameters of a distributed power flow controller system. The method of confirming the parameters of the distributed power flow controller system includes the following steps. A topological structure model is built up, maximum fundamental frequency voltage amplitude and series linkage side three-time harmonic voltage amplitude of a series linkage side transformer injection electric transmission line are confirmed based on a power model and a power law of conservation of the topological structure model. The maximum active power consumed by the series linkage side converter is used for confirming the maximum three-time harmonic current absorbed from a line by the converter. A constraint condition that three-time harmonic reactive power is zero is determined to confirm the maximum three-time harmonic voltage amplitude output by the parallel linkage side and according to normalization low pass filter (LPF) design, parameters of a series linkage side filter are confirmed. With the method of confirming the parameters of the distributed power flow controller system, the parameters of main parts of the distributed power flow controller system can be systematically designed. The method of confirming the parameters of the distributed power flow controller system has the advantages of being simple in step and high in reliability and lays a foundation for application of the distributed power flow controller system to engineering practice or experiment sample machine manufacturing.

Description

technical field [0001] The invention is applied in the technical field of power system and power electronics, and in particular relates to a method for determining system parameters of a distributed power flow controller. Background technique [0002] Since the beginning of the 20th century, it has been generally recognized that expanding the scale of the power system can bring significant social and economic benefits in terms of energy development, industrial layout, load adjustment, safety and economic operation. With the increase of power load, the scale of power system develops rapidly. [0003] The ever-increasing power demand and the aging of the grid network system make us have a very urgent need for fast and reliable power flow control of the transmission system. As one of the main members of the comprehensive FACTS equipment, the Unified Power Flow Controller (UPFC) is currently the most powerful power flow control device. It adjusts the line impedance, voltage pha...

Claims

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Application Information

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IPC IPC(8): H02J3/38
Inventor 唐爱红皮雅敏闪世民冯雅刘芙蓉
Owner WUHAN UNIV OF TECH
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