CN104821585A - 一种开关柜的高次谐波抑制装置 - Google Patents

一种开关柜的高次谐波抑制装置 Download PDF

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Publication number
CN104821585A
CN104821585A CN201510267527.5A CN201510267527A CN104821585A CN 104821585 A CN104821585 A CN 104821585A CN 201510267527 A CN201510267527 A CN 201510267527A CN 104821585 A CN104821585 A CN 104821585A
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China
Prior art keywords
harmonic
switch cabinet
harmonics
harmonic suppression
suppression device
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不公告发明人
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Shure Environmental Technology Hefei Co Ltd
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Shure Environmental Technology Hefei Co Ltd
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Priority to CN201510267527.5A priority Critical patent/CN104821585A/zh
Publication of CN104821585A publication Critical patent/CN104821585A/zh
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/40—Arrangements for reducing harmonics

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Abstract

一种开关柜的高次谐波抑制装置，其涉及电气控制开关柜技术领域。其特征在于包含电网、有源谐波调节器和非线性负载，电网通过有源谐波调节器与非线性负载连接。本发明能向电网侧输送一个与非线性负载产生的谐波相反的谐波，从而达到谐波抑制的效果。

Description

一种开关柜的高次谐波抑制装置
技术领域
本发明涉及电气控制开关柜技术领域，具体涉及一种开关柜的高次谐波抑制装置。
背景技术
在电力电网中，由于存在大量非线性负载，导致电网电流波形不再是正弦波，这一非正弦波可用傅里叶级数分解成为一个直流量，基波正弦量和一系列频率为基波频率整数倍的高次谐波正弦分量之和，对目前三相交流发电机组发出的电压而言，认为基波为正弦波，既波形中基本无直流量和高次谐波分量，但由于电力系统中存在着各式各样的谐波源，使得高次谐波的干扰成了当前电力系统中影响电能质量的一大“公害”。
抑制电网谐波，传统采用的措施有：1、三相整流变压器采用Yd或Dy联接，这样联接可以消除3的整数倍的高次谐波，但电网中的谐波电流只有5、7、11、13等奇次谐波；2、增加整流变压器二次侧的相数；3、装设分流滤波器；4、装静止无功补偿装置，上述四种抑制方式尽管对电网的净化起了一定作用，但它都有很大的局限性，不能对谐波全面管理或仅仅局限在很小的范围之内，这些方式都是被动的，不能随谐波变化而变化。
发明内容
本发明的目的是提供一种开关柜的高次谐波抑制装置，其能向电网侧输送一个与非线性负载产生的谐波相反的谐波，从而达到谐波抑制的效果。
为了解决背景技术所存在的问题，本发明是采用是采用以下技术问题的：它包含电网、有源谐波调节器和非线性负载，电网通过有源谐波调节器与非线性负载连接。
本发明的优点：能向电网侧输送一个与非线性负载产生的谐波相反的谐波，从而达到谐波抑制的效果。
附图说明：
图1为本发明的结构原理图。
具体实施方式
参照图1，它包含电网1、有源谐波调节器2和非线性负载3，电网1通过有源谐波调节器2与非线性负载连接3。
其主要的工作过程为：对非线性负载产生的谐波进行采样、然后分析监测、建立频谱图，将此频谱图作为依据向变换器发送信号，向电网侧输送一个与非线性负载所产生的谐波相反的谐波，达到抑制谐波的目的，有源谐波调节器可以对2--25次的谐波进行有效的抑制，根据电网的实际情况对电压与电流波形的相位角进行调整，修正电流波形，提高功率因数，从而有效的抑制谐波对电网所形成的干扰。

Claims (1)

1.一种开关柜的高次谐波抑制装置，其特征在于包含电网、有源谐波调节器和非线性负载，电网通过有源谐波调节器与非线性负载连接。
CN201510267527.5A 2015-05-25 2015-05-25 一种开关柜的高次谐波抑制装置 Pending CN104821585A (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2173474Y (zh) * 1993-11-12 1994-08-03 北京电力科学研究院 电网谐波有源抑制装置
CN102386622A (zh) * 2011-11-03 2012-03-21 东南大学 多机全补偿与分次补偿组合式完全有源型谐波治理装置
CN203415979U (zh) * 2013-08-05 2014-01-29 刘四海 10～35kV高压有源滤波在线监控开关柜系统
CN103872685A (zh) * 2014-03-11 2014-06-18 韩伟 一种谐波电流分频交错补偿装置及其谐波电流分频率给定算法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2173474Y (zh) * 1993-11-12 1994-08-03 北京电力科学研究院 电网谐波有源抑制装置
CN102386622A (zh) * 2011-11-03 2012-03-21 东南大学 多机全补偿与分次补偿组合式完全有源型谐波治理装置
CN203415979U (zh) * 2013-08-05 2014-01-29 刘四海 10～35kV高压有源滤波在线监控开关柜系统
CN103872685A (zh) * 2014-03-11 2014-06-18 韩伟 一种谐波电流分频交错补偿装置及其谐波电流分频率给定算法

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