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Method for optimizing and allocating capacitor of reactive compensator

A technology for optimizing capacity configuration and compensating capacity, applied in the field of power transmission and distribution, it can solve the problems of shortening the service life of switches and capacitors, and complicating them, so as to avoid frequent switching, improve voltage quality, and prolong life.

Inactive Publication Date: 2007-11-21
保定学峰实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this will inevitably lead to the complexity of the structure of the compensation device and the frequent switching of capacitors, shortening the service life of switches and capacitors

Method used

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  • Method for optimizing and allocating capacitor of reactive compensator
  • Method for optimizing and allocating capacitor of reactive compensator

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Embodiment Construction

[0025] The following is a technical method for optimizing the capacitor capacity configuration of a 0.4KV reactive power automatic compensation device for a distribution transformer in a certain city:

[0026] a. Measure the reactive power of each phase every day within a certain period of time, record the reactive power data of each phase at several moments with equal intervals every day, and obtain the average reactive power of each phase at each moment within the period of time value;

[0027] We use one month's historical average reactive power data for analysis. Because the power factor of the user load of distribution transformers generally changes on a daily basis, therefore, the reactive power data of each phase is recorded every hour every day, and we collect the reactive power data at the whole point, that is, the daily Record the reactive power data of each phase at 0:00, 1:00, 2:00, 3:00... 23:00, and calculate the average reactive power of each phase at each time...

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Abstract

The technical scheme of invention is: the distribution of reactive power in each time interval is determined by monitoring the variation of distribution transformer; based on the distribution of reactive power, three compensation capacitors are configured, which are a fixed compensation capacitor, three-phase commonly-compensated capacitor and split-phase compensation capacitor. The invention can keep high power factor, reduce line losses and improve voltage quality.

Description

technical field [0001] The invention relates to an optimal configuration method for reactive power compensation of a power supply system, belonging to the technical field of power transmission and distribution. Background technique [0002] The power factor of the user load of the power supply transformer fluctuates greatly in a day. At present, there are certain disadvantages in using fixed-capacity capacitors for reactive power compensation. During peak power consumption, the power factor may reach the required standard, but during low power consumption, overcompensation may occur, resulting in reactive power transfer. Moreover, during the operation of the capacitor, overcurrent and overvoltage often occur, so the capacitor must be protected in real time. In this way, it is required that the reactive power compensation device can automatically switch on and off the capacitor, and protect the capacitor, that is, realize automatic reactive power compensation. [0003] In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 郭英顺
Owner 保定学峰实业有限公司