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Integrated governance device for electric energy quality

A power quality and power grid technology, applied in AC network to reduce harmonics/ripples, reactive power compensation, harmonic reduction devices, etc. question

Active Publication Date: 2012-12-19
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research on hybrid compensation technology mainly focuses on reactive power compensation on the low-voltage side, and there is no report on the use of active harmonic control in high-voltage direct-mounted distribution networks.

Method used

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  • Integrated governance device for electric energy quality
  • Integrated governance device for electric energy quality
  • Integrated governance device for electric energy quality

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0151] an attached Figure 6 The specific implementation of the method for the integrated power quality management device to perform integrated power quality management includes the following steps:

[0152] S10: Connect the static var generator 1, the fixed compensator 2 and the thyristor-controlled reactor 3 in parallel to the power grid between the grid power supply 5 and the load 6, and the fixed compensator 2 and the thyristor-controlled reactor 3 form a static reactive power compensator;

[0153] S11: The thyristor-controlled reactor 3 takes the grid reactive power and negative sequence current between the static var generator 1 and the fixed compensator 2 as compensation objects;

[0154] S12: The static var generator 1 takes the grid reactive power between the grid power supply 5 and the static var generator 1 as the compensation object, and compensates the deficiencies after compensation by the static var compensator;

[0155] S13: The static var generator 1 takes t...

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Abstract

The invention discloses an integrated governance device for electric energy quality. A static var generator, a fixed compensator and a thyristor control electric reactor are connected on a power grid between an electric network source and a load in parallel; the fixed compensator and the thyristor control electric reactor form a static var compensator; the thyristor control electric reactor takes idle work and negative sequence current between the static var generator and the fixed compensator as a compensation object; the static var generator takes reactive power between the electric network source and the static var generator as the compensation object to compensate the shortage after the static var compensator compensates; the static var generator takes a harmonic wave between the fixed compensator and the thyristor control electric reactor as a control object to filter the load and harmonic wave generated by the thyristor control electric reactor and compensate the other harmonic waves after the harmonic waves are absorbed by the fixed compensator. The integrated governance device can achieve compensation of the idle work, the harmonic waves and the negative sequence, is fast in compensation speed and good in effect; the capacity of the device is reduced, and the cost is saved at the same time.

Description

technical field [0001] The invention relates to an electric energy treatment method applied in the field of electric power system, in particular to a direct-mounted integrated electric energy quality treatment method applied to a high-voltage distribution network. Background technique [0002] The power quality of the power supply and distribution system is directly related to the stability of the power system, the safety of electrical equipment, and whether it is economical to use electricity. With the increasing use of power electronic devices and sensitive loads, power quality issues have become the primary technical issue concerned by the international power supply community, which is mainly reflected in voltage fluctuations, harmonics, flicker, etc., as well as reactive power and load in current. order, the influence of harmonic components, etc. Modern power quality problems are caused by the application of power electronics technology, and these power quality problems...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/30Y02E40/40
Inventor 冯江华张志学倪大成尚敬罗仁俊刘华东蓝德劭王卫安黄超邱岳烽胡晓东南永辉罗文广孙璐
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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