KR100659984B1 - An apparatus of hybrid filter type for reduction of harmonic frequency - Google Patents

An apparatus of hybrid filter type for reduction of harmonic frequency Download PDF

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KR100659984B1
KR100659984B1 KR1020050131631A KR20050131631A KR100659984B1 KR 100659984 B1 KR100659984 B1 KR 100659984B1 KR 1020050131631 A KR1020050131631 A KR 1020050131631A KR 20050131631 A KR20050131631 A KR 20050131631A KR 100659984 B1 KR100659984 B1 KR 100659984B1
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load
power
hybrid
power system
unit
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KR1020050131631A
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Korean (ko)
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박훈양
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주식회사 에너테크
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Priority to PCT/KR2006/005799 priority patent/WO2007075057A1/en
Priority to BRPI0622172-6A priority patent/BRPI0622172A2/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
    • H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • 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
    • Y02E40/20—Active power filtering [APF]
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

A hybrid filter type harmonic frequency reducing apparatus is provided to effectively suppress a harmonic frequency from being delivered to a power system by using an active filter, which supplements operation of a passive filter. A hybrid filter type harmonic frequency reducing apparatus includes a power system(10), a load(30), a hybrid filter circuit unit(50), and first and second waveform correction units(40a,40b). The load receives power from the power system. The hybrid filter circuit unit is connected to respective phase lines between the power system and the load and a neutral line, and reduces a harmonic frequency, which is delivered from the load to the power system. An active filter unit and a passive filter unit are series-connected to each other and connected in parallel between the respective phase lines and the neutral line. The first waveform correction unit is connected between the power system and the hybrid filter circuit to adjust a threshold impedance of power system. The second waveform correction unit is connected between the hybrid filter circuit and the load to compensate for the signal waveform by suppressing an excessive load.

Description

하이브리드 방식의 고조파 저감 장치 {An apparatus of hybrid filter type for reduction of harmonic frequency} An apparatus of hybrid filter type for reduction of harmonic frequency

도 1은 종래 전력라인상에서 고조파 저감을 위한 장치 구성도. 1 is a block diagram of a device for reducing harmonics on a conventional power line.

도 2는 본 발명에 따른 전력라인상에서의 고조파 저감을 위한 블록 구성도. 2 is a block diagram for harmonic reduction on a power line according to the present invention;

도 3은 본 발명에 따른 전력라인상에서의 고조파 저감을 위한 회로 구성도. 3 is a circuit diagram for harmonic reduction on a power line according to the present invention;

<도면부호의 설명><Description of Drawing>

1,10 전원계통 2 리액터1,10 Power System 2 Reactor

3,30 부하 40a 제1 파형보정부3,30 Load 40a First Waveform Correction

40b 제2 파형보정부 50 하이브리드 필터회로부40b second waveform correction unit 50 hybrid filter circuit unit

60 수동필터부 70 매칭 트랜스포머60 Passive Filter Unit 70 Matching Transformer

80 능동필터부 80 Active Filter

본 발명은 하이브리드 방식의 고조파 저감 장치에 관한 것으로서, 보다 구체적으로는 삼상 다선식 결선구조를 갖는 전원계통의 전력라인상에서 고조파(harmonic frequency)를 저감하기 위한 하이브리드 방식의 고조파 저감 장치에 관 한 것이다. The present invention relates to a harmonic reduction device of a hybrid method, and more particularly, to a harmonic reduction device of a hybrid method for reducing harmonics (harmonic frequency) on a power line of a power system having a three-phase multi-wire connection structure.

종래 전력라인상에서 고조파를 저감하기 위한 장치들은 대부분이 중성접지 리액터(NGR:Neutral Grounding Reactor) 장치를 이용하여 고조파 저감을 이루었다. Most of the devices for reducing harmonics on a conventional power line have achieved harmonic reduction by using a neutral grounding reactor (NGR) device.

상기 리액터를 이용한 고조파 저감 장치(국내출원번호 10-2003-0078522호)로는 도 1에 도시된 바와 같이, 전원계통(1)과, 상기 전원계통(1)으로부터 전원이 인가되는 부하(3)와, 상기 전원계통(1)과 부하(3) 사이에 연결되되 다양한 권취구조 방식으로 구현 가능한 리액터(2) 및 상기 전원계통(1)과 리액터(2) 사이에 연결되는 저항, 인덕터, 커패시터 소자 등으로 구성된다. 이러한, 회로 구성을 통해 부하(3)측에서 발생된 영상 고조파 전류는 영상 임피던스가 낮은 리액터(2)를 통해 다시 부하(3)측으로 흐르게 되고, 정상 및 역상분 전류의 불평형분만 전원계통(1)의 중성선(N)을 통해 흐르도록 함으로써, 전원계통의 중성선으로 다량의 영상 고조파 전류가 흐르는 것을 방지할 수 있도록 한 것이다. Harmonic reduction apparatus (Domestic Application No. 10-2003-0078522) using the reactor, as shown in Figure 1, the power supply system 1, the load (3) to which power is applied from the power supply system (1) and A reactor 2 connected between the power supply system 1 and the load 3 and capable of being implemented in various winding structures and a resistor, an inductor, and a capacitor device connected between the power supply system 1 and the reactor 2 are provided. It consists of. The image harmonic current generated at the load 3 side through the circuit configuration flows back to the load 3 side through the reactor 2 having a low image impedance, and only the unbalance of the normal and reverse phase currents is supplied to the power supply system 1. By flowing through the neutral line (N), it is to prevent a large amount of image harmonic current flows to the neutral line of the power system.

그러나, 종래의 상기 고조파 저감 장치는 리액터 소자를 구비해야 하므로, 고조파 저감장치의 비용상승 및 무게가 증대되는 문제점을 갖고 있다. However, since the conventional harmonic reduction device must have a reactor element, the cost and weight of the harmonic reduction device are increased.

본 발명은 상기 종래기술의 문제점을 해결하기 위해 안출된 것으로서, 본 발명의 목적은 삼상 다선식 결선구조를 갖는 전원계통의 전력라인상에 병렬로 연결되는 직렬연결 구조의 능동필터부와 수동필터부의 회로구성 즉, 하이브리드 방식의 필터회로 구성을 통해 부하측으로부터 발생되어 전원계통으로 인가되는 고조파가 저감될 수 있도록 한 하이브리드 방식의 고조파 저감 장치를 제공함에 있다. The present invention has been made to solve the problems of the prior art, an object of the present invention is an active filter and a passive filter of the series connection structure connected in parallel on the power line of the power system having a three-phase multi-wire connection structure The present invention provides a hybrid harmonic reduction device capable of reducing harmonics generated from a load side and applied to a power supply system through a circuit configuration, that is, a hybrid filter circuit configuration.

본 발명의 다른 목적은 전원계통측과 부하측 각각에 파형보정 등을 위한 가변저항수단을 구비하여, 전원계통측에서의 임계 임피던스 조절 및 부하측에서의 신호 파형 보정을 이루도록 함에 있다. Another object of the present invention is to provide a variable resistance means for waveform correction and the like on each of the power supply side and the load side, so as to achieve the threshold impedance adjustment at the power supply side and signal waveform correction at the load side.

상기 목적을 이루기 위한, 본 발명에 따른 고조파 저감 장치 구성은, Harmonic reduction device configuration according to the present invention for achieving the above object,

전원 공급을 위한 전원계통과; A power system for power supply;

상기 전원계통으로부터 인가된 전원을 공급받는 부하와; A load supplied with power applied from the power system;

상기 부하측으로부터 발생되어 전원계통으로 인가되는 고조파를 저감시키기 위해 상기 전원계통과 부하 사이의 각 상선 및 중성선에 각각 연결되되, 상기 전원계통과 부하 사이의 각 상선 및 중성선에 병렬로 연결되는 직렬연결 구조의 능동필터부와 수동필터부의 회로구성으로 이루어진 하이브리드 필터회로부와; 및 In order to reduce harmonics generated from the load side and applied to the power system, a series connection structure is connected to each phase line and the neutral line between the power system and the load, respectively, and connected in parallel to each phase line and the neutral line between the power system and the load. A hybrid filter circuit section comprising a circuit configuration of an active filter section and a passive filter section; And

상기 전원계통과 하이브리드 필터회로부 사이에 연결되어 전원계통의 임계 임피던스를 조절하고 신호파형을 보정하기 위한 제1 파형보정부와, 상기 하이브리드 필터회로부와 부하 사이에 연결되어 과부하를 방지하고 신호파형을 보정하기 위한 제2 파형보정부로 구성되는 것을 특징으로 한다. A first waveform correction unit connected between the power supply system and the hybrid filter circuit unit to adjust a critical impedance of the power supply system and correcting the signal waveform, and a connection between the hybrid filter circuit unit and the load to prevent overload and correcting the signal waveform It is characterized by consisting of a second waveform correction for.

이하, 도면을 참조하여 본 발명에 따른 바람직한 실시예를 설명한다. Hereinafter, with reference to the drawings will be described a preferred embodiment according to the present invention.

본 실시예에 따른 전원계통에서 부하로 전력라인을 통한 전원 인가시 부하측으로부터 발생되어 전원계통으로 인가되는 고조파 전류를 저감시키기 위한 장치 구성을 도 2를 참조하여 설명한다. An apparatus configuration for reducing harmonic currents generated from the load side and applied to the power system when power is applied from the power system to the load according to the present embodiment will be described with reference to FIG. 2.

도 2에 도시된 바와 같이, 본 실시예에 따른 고조파 저감 장치 구성은, As shown in Figure 2, the configuration of the harmonic reduction device according to this embodiment,

전원 공급을 위한 전원계통(10)과; A power system 10 for power supply;

상기 전원계통(10)으로부터 인가된 전원을 공급받는 부하(30)와; A load 30 receiving power applied from the power system 10;

상기 부하(30)측으로부터 발생되어 전원계통(10)으로 인가되는 고조파를 저감시키기 위해 상기 전원계통과 부하 사이의 각 상선 및 중성선에 각각 연결되되, 상기 전원계통과 부하 사이의 각 상선 및 중성선에 병렬로 연결되는 직렬연결 구조의 능동필터부(도 3의 80)와 수동필터부(도 3의 60)의 회로구성으로 이루어진 하이브리드 필터회로부(50)와; 및 In order to reduce harmonics generated from the load 30 side and applied to the power supply system 10, the power supply is connected to each of the commercial line and the neutral line between the power system and the load, and to each of the commercial line and the neutral line between the power system and the load. A hybrid filter circuit unit 50 having a circuit configuration of an active filter unit (80 in FIG. 3) and a passive filter unit (60 in FIG. 3) having a series connection structure connected in parallel; And

상기 전원계통(10)과 하이브리드 필터회로부(50) 사이에 연결되어 전원계통의 임계 임피던스를 조절하고 신호파형을 보정하기 위한 제1 파형보정부(40a)와, 상기 하이브리드 필터회로부(50)와 부하(30) 사이에 연결되어 과부하를 방지하고 신호파형을 보정하기 위한 제2 파형보정부(40b)로 구성된다. A first waveform compensator 40a connected between the power supply system 10 and the hybrid filter circuit part 50 to adjust a critical impedance of the power supply system and correct a signal waveform, and the hybrid filter circuit part 50 and a load; And a second waveform corrector 40b for preventing overload and correcting the signal waveform.

상기의 구성에서, 본 실시예에 따른 전원계통(10)에서 부하(30)로 인가되는 전원은 교류전원이며, 상기 전원계통(10)의 결선구조는 삼상 다선식 결선구조를 갖는다. In the above configuration, the power applied to the load 30 in the power supply system 10 according to the present embodiment is an AC power supply, and the connection structure of the power supply system 10 has a three-phase multiwire connection structure.

또한, 상기 제1 파형보정부(40a)는 전원계통(10)의 각 상선 및 중성선에 각각 연결되는 가변저항수단이며, 상기 제2 파형보정부(40b)는 부하측으로 연결되는 전력라인의 각 상선 및 중성선에 각각 연결되는 가변저항수단으로서, 상기 제1,2 파형보정부(40a, 40b) 즉, 각각의 가변저항수단을 통해 전원계통의 임계 임피던스를 낮추어 인가되는 전원이 안정화되도록 하고, 부하측으로의 과부하를 방지토록 하기 위함이다. 또한, 상기 제1,2 파형보정부(40a, 40b)는 전원계통 및 부하측에서의 신호파형을 정현파에 가깝도록 개선하기 위한 것이다. In addition, the first waveform correction portion (40a) is a variable resistance means connected to each of the phase line and the neutral line of the power supply system 10, respectively, the second waveform correction portion (40b) of each phase line of the power line connected to the load side And a variable resistance means connected to the neutral wire, respectively, through the first and second waveform correction parts 40a and 40b, that is, through the respective variable resistance means to lower the threshold impedance of the power supply system to stabilize the applied power and to the load side. This is to prevent overload. In addition, the first and second waveform correction units 40a and 40b are for improving the signal waveforms at the power system and the load side to be close to the sine waves.

한편, 상기 하이브리드 필터회로부(50)는 수동필터와 능동필터의 회로구성으로 이루어지는데, 이는 도 3의 회로 구성도에 도시된 바와 같다. On the other hand, the hybrid filter circuit unit 50 is composed of a circuit configuration of the passive filter and the active filter, as shown in the circuit configuration of FIG.

도 3에 도시된 바와 같이, 본 실시예에 따른 수동필터부(60)의 각 리액터(L1~L4) 일단은 전원계통(10)과 부하(30) 사이의 각 상선 및 중성선(N)에 병렬로 연결되고 상기 각 리액터(L1~L4)의 타단은 각각의 커패시터(C1~C4)의 일단에 직렬 연결되며, 상기 각각의 커패시터(C1~C4)의 타단은 능동필터부(80)의 각 리액터(L5~L8)단에 직렬 연결되는 회로구성을 갖는다. 즉, 상기 수동필터부(60)의 각 리액터(L1~L4) 일단은 전원계통과 부하 사이의 각 상선뿐만 아니라 중성선(N)에도 병렬 연결되도록 함으로써 부하측으로부터 전원계통의 각 상선 및 중성선을 통해 인가되는 고조파 전류가 완전 차단될 수 있도록 하였다. As shown in FIG. 3, one end of each of the reactors L1 to L4 of the passive filter unit 60 according to the present embodiment is parallel to each phase line and the neutral line N between the power supply system 10 and the load 30. The other end of each of the reactors L1 to L4 is connected in series to one end of each of the capacitors C1 to C4, and the other end of each of the reactors C1 to C4 is connected to each reactor of the active filter unit 80. It has a circuit structure connected in series with the terminals (L5 to L8). That is, one end of each of the reactors L1 to L4 of the passive filter unit 60 is connected in parallel to the neutral line N as well as to each phase line between the power system and the load, and is applied through each phase line and the neutral line of the power system from the load side. The harmonic current to be cut off completely.

또한, 상기 하이브리드 필터회로부 구성에서, 본 실시예에서는 수동필터부(60)와 능동필터부(80) 사이에 매칭 트랜스포머(70)를 연결 구성함으로써, 상기 수동필터부와 능동필터부 상호간의 서로 다른 임피던스 특성을 맞출 수 있도록 하였다. In the hybrid filter circuit configuration, in the present embodiment, the matching transformer 70 is connected between the passive filter unit 60 and the active filter unit 80, whereby the passive filter unit and the active filter unit are different from each other. Impedance characteristics can be adjusted.

상기와 같은 장치구성으로 이루어진, 본 실시예에 따른 전원계통에서 부하로 전력라인을 통한 전원 인가시 부하측으로부터 발생되어 전원계통으로 인가되는 고조파 전류를 저감시키기 위한 작용을 회로 구성도인 도 3을 참조하여 설명한다. Referring to FIG. 3, which is a circuit configuration diagram of the device configuration as described above, an operation for reducing harmonic currents generated from the load side and applied to the power system when power is applied to the power system from the power system according to the present embodiment is shown in FIG. Will be explained.

도 3에서 보는 바와 같이, 삼상 다선식 결선구조를 갖는 전원계통(10)으로부 터 부하(30)측으로 교류전원이 인가되면 이를 통해 부하(30)에서의 동작이 이루어지는데, 이때 상기 부하(30)측으로부터 발생되어 전원계통(10)으로 인가되는 고조파 전류성분을 차단하기 위해 본 실시예에서는 하이브리드 필터회로부 즉, 직렬 연결구조를 갖는 수동필터부(60)와 능동필터부(80)의 회로구성을 통해 고조파 전류성분의 차단을 이룬 것이다. As shown in FIG. 3, when AC power is applied from the power supply system 10 having a three-phase multi-wire connection structure to the load 30, the operation is performed at the load 30 through the load 30. In this embodiment, in order to block the harmonic current component generated from the side and applied to the power supply system 10, the circuit configuration of the hybrid filter circuit unit, that is, the passive filter unit 60 and the active filter unit 80 having a series connection structure. Through the blocking of the harmonic current component is achieved.

즉, 상기 하이브리드 필터회로부에서, 수동필터부(60)는 부하(30)측으로부터 전원계통(10)으로 인가되는 고조파 전류성분을 1차적으로 필터링하게 되고, 또한 1차 필터링된 고조파 전류성분은 상기 수동필터부(60)와 직렬 연결된 능동필터부(80) 회로구성을 통해 2차적으로 고조파 전류성분이 필터링된다. 한편, 본 실시예에서는 상기 수동필터부(60)와 능동필터부(80)간에 직렬 연결되는 매칭 트랜스포머(70) 구성을 통해 상기 수동필터부(60)와 능동필터부(80) 상호간의 서로 다른 임피던스 특성이 조절될 수 있도록 하였다. That is, in the hybrid filter circuit unit, the passive filter unit 60 primarily filters the harmonic current components applied to the power supply system 10 from the load 30 side, and the first filtered harmonic current components are Harmonic current components are secondarily filtered through the circuit arrangement of the active filter unit 80 connected in series with the passive filter unit 60. Meanwhile, in the present embodiment, the passive filter unit 60 and the active filter unit 80 are different from each other through a matching transformer 70 configured to be connected in series between the passive filter unit 60 and the active filter unit 80. Impedance characteristics can be adjusted.

상기에서와 같이, 본 실시예에서는 전력라인의 각 상선 및 중성선을 통해 부하(30)측으로부터 발생되어 인가되는 고조파 전류성분의 대부분이 수동필터부(60)측으로 흐르게 되어 능동필터부(80)는 작은 용량으로도 인가되는 고조파 전류성분의 필터링이 가능해지며, 이를 통해 부하(30)로부터 전원계통(10)의 각 상선 및 중성선으로 유입되는 고조파 성분을 완전 차단시킬 수 있게 된다. 즉, 상기 능동필터부(80)는 상기 수동필터부(60)를 보완하기 위한 소자이므로 필터의 용량은 작아도 상관 없으며, 작은 용량으로도 전원계통으로 인가되는 고조파 전류를 차단할 수 있는 것이다. As described above, in the present embodiment, most of the harmonic current components generated and applied from the load 30 side through each phase line and the neutral line of the power line flow to the passive filter unit 60, so that the active filter unit 80 is It is possible to filter the harmonic current components that are applied even at a small capacity, thereby completely blocking the harmonic components flowing into each phase line and the neutral line of the power supply system 10 from the load 30. That is, since the active filter unit 80 is an element for complementing the passive filter unit 60, the capacity of the filter may be small, and even a small capacity may block the harmonic current applied to the power supply system.

또한, 본 실시예에서는 앞서 설명한 바와 같이, 전원계통(10)의 각 상선 및 중성선 각각에 가변저항수단(40a)(R1~R4)을 연결하고, 부하(30)측으로 연결되는 전력라인의 각 상선 및 중성선 각각에도 가변저항수단(40b)(R1'~R4')을 연결함으로써, 상기 각각의 가변저항수단(40a, 40b)을 통해 전원계통(10)의 임계 임피던스를 낮추어 인가되는 전원이 안정화되도록 함과 동시에 신호파형을 정현파에 가깝도록 개선하였으며, 부하(30)측에서는 과부하 방지 및 신호파형이 정현파에 가깝게 개선되도록 하였다. In addition, in the present embodiment, as described above, the variable resistance means 40a (R1 to R4) are connected to each of the phase line and the neutral line of the power supply system 10, and each phase line of the power line connected to the load 30 side. And the variable resistance means 40b (R1 'to R4') are also connected to each of the neutral wires, thereby lowering the threshold impedance of the power supply system 10 through the respective variable resistance means 40a and 40b to stabilize the applied power. At the same time, the signal waveform was improved to be closer to the sine wave, and the load 30 side was improved to prevent the overload and the signal waveform to be closer to the sine wave.

이와 같이, 본 발명에서는 부하측으로부터 전원계통으로 인가되는 고조파 전류성분의 저감을 위해 전원계통과 부하 사이의 각 상선 및 중성선에 병렬 연결되는 수동필터를 구비하고, 이 수동필터에 직렬 연결되는 능동필터를 구비하였으며, 또한 상기 전원계통과 부하측에서의 전원 안정화와 과부하 방지 및 정현파에 가까운 신호파형이 인가되도록 하기 위해 전원계통과 부하측 각각에 가변저항수단을 구비한 것이다. As described above, the present invention includes a passive filter connected in parallel to each phase line and the neutral line between the power system and the load in order to reduce harmonic current components applied from the load side to the power system, and an active filter connected in series with the passive filter. Also, variable resistance means are provided on each of the power system and the load side in order to stabilize the power supply and prevent overload and to apply a signal waveform close to the sine wave.

본 발명의 기술적 범위를 해석함에 있어서는, 상기에서 설명된 실시예에 한정하여 해석되어서는 아니 되며, 본 발명의 기술적 범위는 특허청구범위에 기재된 사항의 합리적 해석에 의해 결정되어져야 한다. In interpreting the technical scope of the present invention, it should not be construed as being limited to the embodiments described above, and the technical scope of the present invention should be determined by reasonable interpretation of the matters described in the claims.

본 발명의 하이브리드 방식의 고조파 저감 장치에 따르면, 전력라인상에서 부하측으로부터 전원계통으로 고조파가 인가되는 경우 대부분의 고조파 전류는 수동필터측으로 인가되고, 이때 능동필터는 수동필터를 보완하는 역할만이 이루어져 능동필터의 작은 용량으로도 전원계통으로 인가되는 고조파의 차단율을 높일 수 있으며, 또한 전원계통과 부하측에 각각 구비된 파형보정수단을 통해 인가 전원 안정화와 과부하 방지 및 인가되는 신호파형을 정현파에 가깝게 구현가능한 효과를 갖는다. According to the hybrid harmonic reduction device of the present invention, when harmonics are applied from the load side to the power system on the power line, most of the harmonic currents are applied to the passive filter side, and the active filter serves only as a complement to the passive filter. Even the small capacity of the filter can increase the blocking rate of harmonics applied to the power supply system, and stabilize the applied power supply, prevent overload and apply the applied signal waveform to the sine wave through the waveform correction means provided on the power supply system and the load side, respectively. Has an effect.

Claims (7)

전력라인상에서 고조파를 저감하기 위한 고조파 저감 장치에 있어서, In a harmonic reduction device for reducing harmonics on a power line, 전원 공급을 위한 전원계통과; A power system for power supply; 상기 전원계통으로부터 인가된 전원을 공급받는 부하와; A load supplied with power applied from the power system; 상기 부하측으로부터 발생되어 전원계통으로 인가되는 고조파를 저감시키기 위해 상기 전원계통과 부하 사이의 각 상선 및 중성선에 각각 연결되되, 상기 전원계통과 부하 사이의 각 상선 및 중성선에 병렬로 연결되는 직렬연결 구조의 능동필터부와 수동필터부의 회로구성으로 이루어진 하이브리드 필터회로부와; 및 In order to reduce harmonics generated from the load side and applied to the power system, a series connection structure is connected to each phase line and the neutral line between the power system and the load, respectively, and connected in parallel to each phase line and the neutral line between the power system and the load. A hybrid filter circuit section comprising a circuit configuration of an active filter section and a passive filter section; And 상기 전원계통과 하이브리드 필터회로부 사이에 연결되어 전원계통의 임계 임피던스를 조절하고 신호파형을 보정하기 위한 제1 파형보정부와, 상기 하이브리드 필터회로부와 부하 사이에 연결되어 과부하를 방지하고 신호파형을 보정하기 위한 제2 파형보정부로 구성되는 것을 특징으로 하는 하이브리드 방식의 고조파 저감 장치. A first waveform correction unit connected between the power supply system and the hybrid filter circuit unit to adjust a critical impedance of the power supply system and correcting the signal waveform, and a connection between the hybrid filter circuit unit and the load to prevent overload and correcting the signal waveform The harmonic reduction device of the hybrid method, characterized in that the second waveform correction for. 제 1항에 있어서, The method of claim 1, 상기 전원계통에서 부하로 인가되는 전원은 교류전원인 것을 특징으로 하는 하이브리드 방식의 고조파 저감 장치. Hybrid power harmonics reduction device, characterized in that the power applied to the load from the power system is AC power. 제 1항에 있어서, The method of claim 1, 상기 전원계통의 결선구조는 삼상 다선식 결선구조인 것을 특징으로 하는 하이브리드 방식의 고조파 저감 장치. The harmonic reduction device of the hybrid method, characterized in that the connection structure of the power system is a three-phase multi-wire connection structure. 제 1항에 있어서, The method of claim 1, 상기 하이브리드 필터회로부는, 상기 수동필터부의 각 리액터 일단이 전원계통과 부하 사이의 각 상선 및 중성선에 병렬로 연결되고 상기 각 리액터의 타단이 각각의 커패시터의 일단에 직렬 연결되며, 상기 각각의 커패시터의 타단은 상기 능동필터의 각 리액터단에 직렬 연결되는 회로구성인 것을 특징으로 하는 하이브리드 방식의 고조파 저감 장치. The hybrid filter circuit unit, one end of each reactor of the passive filter unit is connected in parallel to each of the phase line and the neutral line between the power supply system and the load and the other end of each reactor is connected in series to one end of each capacitor, And the other end is a circuit structure connected in series to each reactor end of the active filter. 제 4항에 있어서, The method of claim 4, wherein 상기 수동필터부와 능동필터부의 서로 다른 상호간의 임피던스 특성을 맞추기 위해 수동필터부와 능동필터부 사이에 연결 구비되는 매칭 트랜스포머를 추가로 포함하는 것을 특징으로 하는 하이브리드 방식의 고조파 저감 장치. And a matching transformer connected between the passive filter unit and the active filter unit to match the impedance characteristics of the passive filter unit and the active filter unit. 제 1항에 있어서, The method of claim 1, 상기 제1 파형보정부는 전원계통의 각 상선 및 중성선에 각각 연결되는 가변저항수단인 것을 특징으로 하는 하이브리드 방식의 고조파 저감 장치. The first waveform correction unit is a hybrid harmonic reduction device, characterized in that the variable resistance means connected to each of the phase line and the neutral line of the power supply system, respectively. 제 1항에 있어서, The method of claim 1, 상기 제2 파형보정부는 부하측 각 상선 및 중성선에 각각 연결되는 가변저항수단인 것을 특징으로 하는 하이브리드 방식의 고조파 저감 장치. The second waveform correction unit is a harmonic reduction device of a hybrid method, characterized in that the variable resistance means connected to each of the load line and the neutral line, respectively.
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WO2010011098A3 (en) * 2008-07-24 2010-05-14 (주)에너테크 Hybrid transformer with transformation and improved harmonics functions, unbalanced current, and a power supply system thereof
WO2010032957A2 (en) * 2008-09-17 2010-03-25 (주)에너테크 Power quality improvement device and power supply system
WO2010032957A3 (en) * 2008-09-17 2010-07-08 (주)에너테크 Power quality improvement device and power supply system
KR101573813B1 (en) 2015-06-29 2015-12-02 박훈양 Low loss type hybrid transformer, and manufacturing method thereof
WO2017003271A1 (en) * 2015-06-29 2017-01-05 박훈양 Low-loss hybrid transformer and method for manufacturing same

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