Determination method for power grid operation manner for configuring parallel capacitor to alleviate voltage sag

A technology of voltage sag and determination method, which is applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc.

Inactive Publication Date: 2017-05-31
XIAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, how to reduce the harm of voltage sag to sensitive loads is not considered by combining the economical configuration of shunt capacitors with network reconfiguration

Method used

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  • Determination method for power grid operation manner for configuring parallel capacitor to alleviate voltage sag
  • Determination method for power grid operation manner for configuring parallel capacitor to alleviate voltage sag
  • Determination method for power grid operation manner for configuring parallel capacitor to alleviate voltage sag

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Embodiment Construction

[0092] Such as figure 1 A method for determining the operation mode of the power grid for alleviating voltage sags by configuring shunt capacitors includes the following steps:

[0093] Step 1. The parallel capacitor configuration scheme is determined, and the process is as follows:

[0094] Step 101. Acquisition of optional shunt capacitor configuration schemes for the power grid: according to whether shunt capacitors are installed on each bus in the power grid to be configured and the capacity of the installed parallel capacitors, multiple different optional shunt capacitor configuration schemes for the power grid to be configured are obtained;

[0095] Each of the optional shunt capacitor configuration schemes includes the shunt capacitor configuration information of each bus in the grid to be configured, and the shunt capacitor configuration information of each bus includes whether a shunt capacitor is installed on the bus and the installed shunt capacitor capacity;

[0...

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Abstract

The invention discloses a determination method for a power grid operation manner for configuring a parallel capacitor to alleviate voltage sag. The determination method comprises the following steps: 1, determining a parallel capacitor configuring scheme: 101, obtaining a selectable parallel capacitor configuration scheme of a power grid; 102, judging the feasibility; 103, judging gird loss of the power grid; 104, judging voltage sag influences; 105, judging investment cost and determining and optimizing the parallel capacitor configuring scheme; 2, optimizing the power grid operation manner: 201, determining a selectable operation manner of the power grid; 202, judging the feasibility; 203, judging the economical efficiency; 204, judging the optimization ability and determining an optimized operation manner of a power grid to be optimized. The method is simple, reasonable in design, convenient to realize and good in utilization effect; the determined operation manner of the power grid is reasonable; the grid loss is reduced and the voltage sag can also be effectively alleviated; the determination method also consider the economical efficiency of configuring the parallel capacitor of the power grid, and safety operation and economical operation of the power grid can be realized.

Description

technical field [0001] The invention belongs to the technical field of power grid optimization operation, and in particular relates to a method for determining the power grid operation mode for configuring parallel capacitors to alleviate voltage sags. Background technique [0002] In recent years, with the rapid development of computer technology and power electronics technology, a large number of sensitive loads have appeared in power users. The quality disturbance is very sensitive, and the failure of a single device or component may scrap the products of the entire production line. Voltage sags cause huge losses to users and the social economy. It has been considered by domestic and foreign experts to be the most serious power quality problem. [0003] The traditional shunt capacitor configuration does not consider the grid voltage sag, and aims to reduce network loss and reactive power optimization, increase the supply voltage, and ensure the stable and economic operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/12
CPCH02J3/00H02J3/12H02J2203/20
Inventor 马莉
Owner XIAN UNIV OF SCI & TECH
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