JPS6295928A - Active filter - Google Patents
Active filterInfo
- Publication number
- JPS6295928A JPS6295928A JP60238104A JP23810485A JPS6295928A JP S6295928 A JPS6295928 A JP S6295928A JP 60238104 A JP60238104 A JP 60238104A JP 23810485 A JP23810485 A JP 23810485A JP S6295928 A JPS6295928 A JP S6295928A
- Authority
- JP
- Japan
- Prior art keywords
- active filter
- power
- transformer
- harmonic
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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]
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は電力系統の高調波抑制に使用されるアクティ
ブフィルタに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an active filter used for harmonic suppression in a power system.
近年、電力系統においては、半導体機器の増加に伴う高
調波障害の問題を解消するため、従来の受動フィルタ（
Ｌ−Ｃ回路）に代えて、例えば、昭和６０年電気学会全
国大会論文、頁１１２９、（昭和６０年４月発行、発行
元：電気学会）に示されるような半導体素子を用いたイ
ンバータ等の電力変換器で構成されるアクティブフィル
タ（能動フィルタ）を使用するようになっている。In recent years, in power systems, conventional passive filters (
In place of the L-C circuit), for example, an inverter using semiconductor elements as shown in 1985 National Conference Papers of the Institute of Electrical Engineers of Japan, p. 1129 (published in April 1985, publisher: Institute of Electrical Engineers of Japan). Active filters consisting of power converters are now used.
第４図はこの種のアクティブフィルタを設けた電力系統
を示したもので、１は送配電線（もしくは発電所母線）
、２は負荷用電力変圧器、３は主回路が半導体スイッチ
ング素子で構成された電力変換器等の高調波を伴う系統
負荷、４は高調減電／Ａ検出器、５はアクティブフィル
タ、６は高調波電流検出器、９はアクティブフィルタ５
の出力変圧器である。Figure 4 shows a power system equipped with this type of active filter, where 1 is the power transmission and distribution line (or power plant bus).
, 2 is a load power transformer, 3 is a system load with harmonics such as a power converter whose main circuit is composed of semiconductor switching elements, 4 is a harmonic voltage reduction/A detector, 5 is an active filter, and 6 is a Harmonic current detector, 9 is active filter 5
This is the output transformer.
アクティブフィルタ５が無い場合には、系統負荷３の運
転に伴い発生する高調波成分は電力変圧器２を通して送
配電線１に注入され、該送配電線１に接続されている他
の図示しない系統負荷に高８周波障害をもたらすことに
なる。In the absence of the active filter 5, harmonic components generated due to the operation of the system load 3 are injected into the power transmission and distribution line 1 through the power transformer 2, and are transmitted to other systems (not shown) connected to the power transmission and distribution line 1. This will introduce high 8 frequency interference to the load.
しかし、上記構成では、上記高調波成分は高調波電流検
出器４を介してアクティブフィルタ５に取込まれ、該ア
クティブフィルタ５が上記高調波成分に対して逆位相・
同一振幅の？ｉｆＸ用高調波高調波電流するようにフィ
ードバック制御される。However, in the above configuration, the harmonic components are taken into the active filter 5 via the harmonic current detector 4, and the active filter 5 has a phase opposite to the harmonic components.
Same amplitude? Feedback control is performed to generate harmonic current for ifX.
このアクティブフィルタ５の出力は出力変圧器９で昇圧
されて送配電線１に供給されるので、系統負荷３から電
力変圧器２を通して送配電線１に注入された上記高調波
成分は上記補償用高調波電流により相殺される。この出
力変圧器９は上記電圧整合作用の他、送配電線１側から
のサージ等の侵入を防止する為に設けられている。Since the output of the active filter 5 is boosted by the output transformer 9 and supplied to the power transmission and distribution line 1, the harmonic components injected from the system load 3 to the power transmission and distribution line 1 through the power transformer 2 are used for the compensation. canceled by harmonic current. This output transformer 9 is provided not only for the voltage matching function described above but also for preventing surges and the like from entering from the power transmission/distribution line 1 side.
このように、アクティブフィルタ５には電圧整合および
サージ等の遮断のための出力変圧器９を必要とするが、
従来は、専用の変圧器を設けているため、価格の上昇を
もたらし、設置面積が大きくなるという問題があった。In this way, the active filter 5 requires the output transformer 9 for voltage matching and blocking of surges, etc.
Conventionally, since a dedicated transformer is provided, there have been problems in that the price has increased and the installation area has increased.
この発明は上記問題を解消するためになされたもので、
従来に比し、安価な費用で、かつ、少ない設置スペース
で配設することができるアクティブフィルタを得ること
を目的とする。This invention was made to solve the above problem.
It is an object of the present invention to obtain an active filter that can be installed at a lower cost and in a smaller installation space than conventional ones.
この発明は上記目的を達成するため、送配電線の高調波
成分注入点もしくは該注入点近傍に接続された給電経路
に介装される変圧器に低圧３次巻線を設は該低圧３次巻
線にアクティブフィルタの出力を直接に結合する構成と
したものである。In order to achieve the above object, the present invention provides a low-voltage tertiary winding in a transformer installed at a harmonic component injection point of a power transmission and distribution line or in a power supply path connected to the vicinity of the injection point. The configuration is such that the output of the active filter is directly coupled to the winding.
この発明では、アクティブフィルタの出力が負荷変圧器
等の電力変圧器の低圧３次巻線を通して電力系統に供給
されるので、専用の出力変圧器を省くことができる。In this invention, the output of the active filter is supplied to the power system through the low voltage tertiary winding of a power transformer such as a load transformer, thereby eliminating the need for a dedicated output transformer.
第１図はこの発明の一実施例を示した系統図であって、
送配電線１と系統負荷３との間に挿入される電力変圧器
２が、該送配電線１に接続される１次巻線２１と、系統
負荷３に接続される２次巻線２２を有する他に低圧の３
次巻線２３を有し、該３次巻線２３にアクティブフィル
タ５の出力側が直接に接続されている。FIG. 1 is a system diagram showing an embodiment of the present invention,
A power transformer 2 inserted between a power transmission and distribution line 1 and a system load 3 has a primary winding 21 connected to the power transmission and distribution line 1 and a secondary winding 22 connected to the system load 3. In addition to having low pressure 3
It has a secondary winding 23, and the output side of the active filter 5 is directly connected to the tertiary winding 23.
この構成においては、アクティブフィルタ５の出力が変
圧器２の３次巻線２３に結合されているので、系統負荷
３が発生する高調波成分とアクティブフィルタ５の出力
との差分が電力変圧器２の１次巻線２１を通して送配電
線１に注入されることになるが、アクティブフィルタ５
は高調波電流検出器４を通して検出される負荷電流が含
む残留高調波成分すなわち」二記差分を取込んでこの差
分を相殺する補償用高調波電流を送出する。In this configuration, since the output of the active filter 5 is coupled to the tertiary winding 23 of the transformer 2, the difference between the harmonic components generated by the system load 3 and the output of the active filter 5 is transmitted to the power transformer 2. is injected into the power transmission and distribution line 1 through the primary winding 21 of the active filter 5.
takes in the residual harmonic component contained in the load current detected through the harmonic current detector 4, that is, the difference between the two terms, and sends out a compensating harmonic current that cancels out this difference.
この実施例では、高調波電流検出器４が電力変圧器２の
１次側（高圧側）に挿入されているので、高調波電流検
出器４を通して検出される高調波成分は上記残留高調波
成分であるが、第２図に示す如く、高調波電流検出器４
を電力変圧器２の２次側に挿入するとともにアクティブ
フィルタ５の出力側に高調波電流検出器６を設けて両電
流検出器を通して検出される高調波成分が相殺されるよ
うにアクティブフィルタ５を制御しても、同様の効果を
得ることができる。In this embodiment, the harmonic current detector 4 is inserted into the primary side (high voltage side) of the power transformer 2, so the harmonic components detected through the harmonic current detector 4 are the residual harmonic components. However, as shown in FIG.
is inserted into the secondary side of the power transformer 2, and a harmonic current detector 6 is provided on the output side of the active filter 5, so that the active filter 5 is configured such that the harmonic components detected through both current detectors are canceled out. A similar effect can be obtained by controlling.
また、上記実施例では、高調波成分を発生する系統負荷
３に接続される電力変圧器２に３次巻線を設けて該３次
巻線を通して補償用高調波電流を供給しているが、第３
図に示すように、高調波成分を発生しない系統負荷７が
電力変圧器８を介して系統負荷３と同じ送配電線１に接
続されている場合に、該電力変圧器８に、１次巻線８１
．２次巻線８２の他に、低圧の３次巻線８３が有る場合
には該３次巻線８３にアクティブフィルタ５の出力側を
直接に接続するようにしても、系統負荷３が発生する高
調波成分をアクティブフィルタ５により補償することが
できる。この場合、アクティブフィルタ５から電力変圧
器８を通して系統負荷７に高調波電流が流入するが、該
系統負荷７の高調波インピーダンスが送配電線１例の高
調波インピーダンスより十分に小さい場合は該系統負荷
７に流入する高調波電流は許容し得る程度となる。Further, in the above embodiment, the power transformer 2 connected to the system load 3 that generates harmonic components is provided with a tertiary winding, and the compensating harmonic current is supplied through the tertiary winding. Third
As shown in the figure, when a system load 7 that does not generate harmonic components is connected to the same power transmission and distribution line 1 as the system load 3 via a power transformer 8, the power transformer 8 has a primary winding. line 81
．． In addition to the secondary winding 82, if there is a low-voltage tertiary winding 83, even if the output side of the active filter 5 is directly connected to the tertiary winding 83, a system load 3 is generated. The active filter 5 can compensate for harmonic components. In this case, harmonic current flows from the active filter 5 to the grid load 7 through the power transformer 8, but if the harmonic impedance of the grid load 7 is sufficiently smaller than the harmonic impedance of one transmission/distribution line, the grid The harmonic current flowing into the load 7 is tolerable.
上記各実施例では、送配電線ｌに接続される電力変圧器
に低圧３次巻線を設ける必要があるが、出力変圧器９を
設ける場合に比して安価な費用で済むことは明白である
。In each of the above embodiments, it is necessary to provide a low-voltage tertiary winding to the power transformer connected to the power transmission and distribution line 1, but it is clear that the cost is lower than in the case where the output transformer 9 is provided. be.
この発明は以上説明した通り、系統負荷への給電経路に
設けられる電力変圧器を低圧３次巻線を有する構造にし
て該低圧３次巻線を通して系統にアクティブフィルタの
出力を注入する構成としたことにより、従来使用してい
た専用の出力変圧器が不要となるので、従来に比し、ア
クティブフィルタを設置するための費用を軽減し、また
、設置スペースを小さくすることができる。As explained above, this invention has a structure in which a power transformer installed in a power supply path to a system load has a structure having a low voltage tertiary winding, and the output of an active filter is injected into the system through the low voltage tertiary winding. This eliminates the need for a dedicated output transformer, which has been used in the past, making it possible to reduce the cost of installing an active filter and reduce the installation space compared to the past.
第１図、第２図および第３図はこの発明の実施例を示す
回路図、第４図は従来のアクティブフィルタを設置した
電力系統図である。
図において、１−送配電線、２．８−・電力変圧器、３
．７−系統負荷、４．６−高調波電流検出器、５−・ア
クティブフィルタ、２３．８３・−低圧３次巻線。
なお、図中、同一符号は同一または相当部分を示す。1, 2, and 3 are circuit diagrams showing embodiments of the present invention, and FIG. 4 is a power system diagram in which a conventional active filter is installed. In the figure, 1 - power transmission and distribution lines, 2.8 - power transformer, 3
．． 7 - System load, 4.6 - Harmonic current detector, 5 - Active filter, 23.83 - Low voltage tertiary winding. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
分を抑制するための補償用高調波電流を作成するアクテ
ィブフィルタにおいて、該アクティブフィルタの出力が
、上記高調波成分の注入点もしくは該注入点近傍に接続
された給電経路に介装された変圧器の３次巻線を通して
電力系統に結合されることを特徴とするアクティブフィ
ルタ。In an active filter that detects harmonic components injected into power transmission and distribution lines and creates a compensating harmonic current for suppressing the harmonic components, the output of the active filter is located at the injection point of the harmonic components or An active filter characterized in that it is coupled to a power system through a tertiary winding of a transformer interposed in a power supply path connected near the injection point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60238104A JPS6295928A (en) | 1985-10-22 | 1985-10-22 | Active filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60238104A JPS6295928A (en) | 1985-10-22 | 1985-10-22 | Active filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6295928A true JPS6295928A (en) | 1987-05-02 |
Family
ID=17025234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60238104A Pending JPS6295928A (en) | 1985-10-22 | 1985-10-22 | Active filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6295928A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6485574A (en) * | 1987-09-28 | 1989-03-30 | Toshiba Corp | Power converting device |
| JPH02146933A (en) * | 1988-11-25 | 1990-06-06 | Nissin Electric Co Ltd | Higher harmonic filter for power system |
| JPH0365024A (en) * | 1989-07-29 | 1991-03-20 | Nissin Electric Co Ltd | Higher harmonic filter for power system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226625A (en) * | 1983-06-07 | 1984-12-19 | 株式会社東芝 | Harmonic wave removing device of power converter |
| JPS60156226A (en) * | 1984-01-23 | 1985-08-16 | 住友電気工業株式会社 | Harmonic suppressing device |
-
1985
- 1985-10-22 JP JP60238104A patent/JPS6295928A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226625A (en) * | 1983-06-07 | 1984-12-19 | 株式会社東芝 | Harmonic wave removing device of power converter |
| JPS60156226A (en) * | 1984-01-23 | 1985-08-16 | 住友電気工業株式会社 | Harmonic suppressing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6485574A (en) * | 1987-09-28 | 1989-03-30 | Toshiba Corp | Power converting device |
| JPH02146933A (en) * | 1988-11-25 | 1990-06-06 | Nissin Electric Co Ltd | Higher harmonic filter for power system |
| JPH0667120B2 (en) * | 1988-11-25 | 1994-08-24 | 日新電機株式会社 | Power system harmonic filters |
| JPH0365024A (en) * | 1989-07-29 | 1991-03-20 | Nissin Electric Co Ltd | Higher harmonic filter for power system |
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