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Method for optimizing and allocating capacitor of reactive compensator

A technology for compensating capacitors and capacitors, applied in the field of power transmission and distribution, can solve problems such as shortening the service life of switches and capacitors, complication, etc., to avoid frequent switching, improve voltage quality, and prolong life.

Inactive Publication Date: 2009-09-30
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
  • 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 at intervals of one hour every day, and we collect the reactive power data at the whole point, that is, the daily sub- 0:00, 1:00, 2:00, 3:00... 23:00 record the reactive power data of each phase, and obtain the average value of reactive power of e...

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Abstract

The invention discloses a capacitor capacity optimization configuration method of a reactive power compensation device, which belongs to the technical field of power transmission and distribution and is used for solving the optimal compensation problem. The technical solution is: by monitoring the load change of the distribution transformer, determine the distribution of its reactive power in each time period, and then use this as a basis to configure three kinds of compensation capacitors according to statistical principles, namely fixed compensation capacitors, three-phase Co-compensation capacitors and split-phase compensation capacitors. The invention not only maintains a high power factor of the line, greatly reduces the line loss rate, improves the voltage quality, but also avoids frequent switching of capacitors, effectively prolonging the lifespan of switches and capacitors.

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...

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Application Information

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