Site selection and constant volume method for inter-line power flow controller

A power flow controller and line-to-line technology, applied to AC networks with different sources of the same frequency, etc., can solve problems such as inability to control power flow in power systems, high IPFC cost, and line overload.

Inactive Publication Date: 2019-09-24
SOUTHEAST UNIV +3
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  • Application Information

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Problems solved by technology

The IPFC in the prior art is often costly, and cannot accurately and effec...

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  • Site selection and constant volume method for inter-line power flow controller
  • Site selection and constant volume method for inter-line power flow controller
  • Site selection and constant volume method for inter-line power flow controller

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0048] This specific implementation mode discloses a site selection and capacity setting method for an inter-line power flow controller. The inter-line power flow controller is referred to as IPFC for short, such as figure 1 shown, including the following steps:

[0049] S1: Establish a static safety margin comprehensive evaluation index SC that can evaluate the target installation line of the power flow controller between the neutral lines of the power system sum ;

[0050] S2: Carry out N-1 fault scanning for all lines in the power system, and use the static safety margin comprehensive evaluation index SC obtained in step S1 sum Perform fault sequencing on all lines;

[0051] S3: Assign weights to each line according to the importance of all lines, and obtain the weighted safety index of each line under different faults;

[0052] S4: Select the...

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Abstract

The invention discloses a site selection and constant volume method for an inter-line power flow controller, and the method comprises the following steps: defining a system static safety margin comprehensive evaluation index, and comprehensively evaluating the operation state of each line after N-1 different fault occur to obtain an IPFC site selection adaptability index; performing IPFC step-by-step site selection; determining a line with the worst adaptability index as an IPFC main control line, scanning buses at the two ends of the main control line, and taking a line with the optimal fitness index in the lines connected with the two buses as an auxiliary control line; on the basis of site selection research, carrying out the IPFC optimization constant volume research, and performing the optimization selection on the capacity of each converter of the IPFC through an intelligent algorithm. According to the invention, the cost of the inter-line power flow controller can be reduced, the power flow of the power system can be accurately and effectively controlled, and the line overload phenomenon is avoided.

Description

technical field [0001] The invention relates to an interline power flow controller, in particular to a site selection and capacity setting method for an interline power flow controller. Background technique [0002] The interline power flow controller (IPFC), like the unified power flow controller (UPFC), is a typical representative of the third-generation FACTS device. Compared with UPFC, IPFC is a more comprehensive and powerful FACTS control device. On the one hand, it can not only directly control the power flow on the transmission line installed in the series part like UPFC, but also realize the power exchange between lines, thereby controlling the power flow between different lines; on the other hand, UPFC is controlling the power flow of its own installed lines Sometimes it may cause the power flow of adjacent heavy-loaded lines to exceed the limit, and IPFC can transfer the power flow of heavy-loaded lines to adjacent light-loaded lines in a directional and quantita...

Claims

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Application Information

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IPC IPC(8): H02J3/06
CPCH02J3/06
Inventor 吴熙王亮陈曦高伯阳王梦婷王瑞刘玙陶加贵徐晓轶陈轩
Owner SOUTHEAST UNIV
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