JPH08126202A - Active filter control and control status display - Google Patents
Active filter control and control status displayInfo
- Publication number
- JPH08126202A JPH08126202A JP6263457A JP26345794A JPH08126202A JP H08126202 A JPH08126202 A JP H08126202A JP 6263457 A JP6263457 A JP 6263457A JP 26345794 A JP26345794 A JP 26345794A JP H08126202 A JPH08126202 A JP H08126202A
- Authority
- JP
- Japan
- Prior art keywords
- compensation
- active filter
- control
- reactive power
- circuit
- 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
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Networks Using Active Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、高調波補償機能およ
び無効電流補償機能を持つアクティブフィルタの制御，
表示方法に関する。BACKGROUND OF THE INVENTION The present invention relates to control of an active filter having a harmonic compensation function and a reactive current compensation function,
Regarding display method.
【０００２】[0002]
【従来の技術】一般に、アクティブフィルタは高調波補
償機能および無効電流補償機能を持つが、補償機能の割
合は高調波補償が優先で、無効電流補償の方はリミッタ
を掛けて運転するのが普通で、無効電流補償機能を優先
して制御することができないようになっている。また、
現在どの程度の補償動作が行なわれているかは、目視で
きないのが一般的である。2. Description of the Related Art Generally, an active filter has a harmonic compensation function and a reactive current compensation function, but the harmonic compensation is prioritized in the ratio of the compensation function, and the reactive current compensation is usually operated with a limiter. Therefore, the reactive current compensation function cannot be preferentially controlled. Also,
Generally, it is not possible to visually check how much compensation operation is currently performed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、無効電
力補償を優先的に実行したい場合もあり、さらにはそれ
ぞれの補償容量を目で確認（モニタ）したいという要求
もある。したがって、この発明の課題は無効電力補償を
優先的に実行可能とし、それぞれの補償容量をモニタ可
能とすることにある。However, there are cases where it is desired to preferentially execute reactive power compensation, and there is also a demand for visually confirming (monitoring) each compensation capacity. Therefore, it is an object of the present invention to preferentially execute reactive power compensation and to monitor each compensation capacity.
【０００４】[0004]
【課題を解決するための手段】このような課題を解決す
るため、この発明では、高調波補償制御および無効電流
補償制御を行なうアクティブフィルタに対し、優先選択
手段を設けていずれか一方の制御のみを優先的に実行可
能にするとともに、表示手段を設けて高調波補償，無効
電流補償の程度をモニタ可能にしたことを特徴としてい
る。In order to solve such a problem, in the present invention, priority selection means is provided for an active filter for performing harmonic compensation control and reactive current compensation control, and only one of the controls is performed. Is preferentially executed, and a display means is provided to monitor the degree of harmonic compensation and reactive current compensation.
【０００５】[0005]
【作用】選択スイッチとその制御回路からなる優先選択
手段を設けることにより、高調波補償動作および無効電
流補償動作の優先順位を変えられるようにし、重視した
い方の補償動作を優先して実行可能とする。また、各補
償動作容量値をモニタ可能とすることにより、現アクテ
ィブフィルタ容量に対してどのくらいの割合で補償動作
をしているか、などを見て確認できるようにする。By providing the priority selection means including the selection switch and its control circuit, the priority order of the harmonic compensation operation and the reactive current compensation operation can be changed, and the compensation operation of the one to be emphasized can be executed with priority. To do. Further, by making it possible to monitor each compensation operation capacitance value, it is possible to confirm by checking the ratio of the compensation operation with respect to the current active filter capacitance.
【０００６】[0006]
【実施例】図１はこの発明の実施例を示す概要図であ
る。同図において、１Ａ，１Ｂは負荷、２はアクティブ
フィルタ主回路、３Ａ，３Ｂおよび４Ａ，４Ｂは変流器
（ＣＴ）で、３Ａ，３Ｂは負荷電流検出用、４Ａは系統
の高調波電流検出用、４Ｂは系統の無効電流検出用、５
は系統電圧検出用変圧器（ＰＴ）、６は負荷側高調波電
流検出回路である。また、７は電流変換器（Ｓ／Ｃ）、
８は高調波制御回路、９は無効電力検出回路としてのバ
ールトランスデューサ（ＴＤ）、１０は無効電力制御回
路、１１は電流調節器（ＡＣＲ）、１２はパルス幅変調
（ＰＷＭ）回路である。さらに、１３はキャリア信号発
生器、１４はパルス分配器（ＰＧ）、１５は切換スイッ
チ、１６は優先回路、１７は演算器、１８は表示器であ
る。FIG. 1 is a schematic diagram showing an embodiment of the present invention. In the figure, 1A and 1B are loads, 2 is an active filter main circuit, 3A, 3B and 4A and 4B are current transformers (CT), 3A and 3B are for load current detection, and 4A is system harmonic current detection. 4B is for detecting the reactive current of the system 5
Is a system voltage detecting transformer (PT), and 6 is a load side harmonic current detecting circuit. Further, 7 is a current converter (S / C),
Reference numeral 8 is a harmonic control circuit, 9 is a bur transducer (TD) as a reactive power detection circuit, 10 is a reactive power control circuit, 11 is a current regulator (ACR), and 12 is a pulse width modulation (PWM) circuit. Further, 13 is a carrier signal generator, 14 is a pulse distributor (PG), 15 is a changeover switch, 16 is a priority circuit, 17 is a calculator, and 18 is a display.
【０００７】すなわち、検出回路６で負荷側高調波電流
分を、また電流変換器７で系統の高調波電流分をそれぞ
れ求めて高調波制御回路８に入力することにより、高調
波補償量Ｉｓｃを求める一方、系統の無効電流ｉｓ２と
電圧ＶＳからバールトランスデューサ９により系統の無
効電力を求め、これを無効電力制御回路１０に入力して
無効電力補償量Ｉｃを求める。That is, the detection circuit 6 obtains the load side harmonic current component and the current converter 7 obtains the system harmonic current component, respectively, and inputs them to the harmonic control circuit 8 to obtain the harmonic compensation amount Isc. On the other hand, the reactive power of the system is obtained by the bur transducer 9 from the reactive current is2 of the system and the voltage VS, and this is input to the reactive power control circuit 10 to obtain the reactive power compensation amount Ic.
【０００８】そして、これら高調波補償量Ｉｓｃおよび
無効電力補償量ＩｃをＡＣＲ１１に入力して所定の調節
演算を行ない、その出力をＰＷＭ回路１２においてキャ
リア信号発生器１３からの例えば三角波信号と比較し、
その比較結果に応じてＰＧ１４からアクティブフィルタ
主回路２のスイッチングデバイスをオン，オフ制御する
ことにより、高調波補償および無効電流補償を行なうも
のである。Then, the harmonic compensation amount Isc and the reactive power compensation amount Ic are input to the ACR 11 to perform a predetermined adjustment calculation, and the output thereof is compared in the PWM circuit 12 with, for example, a triangular wave signal from the carrier signal generator 13. ,
On / off control of the switching device of the active filter main circuit 2 is performed from the PG 14 in accordance with the comparison result, thereby performing harmonic compensation and reactive current compensation.
【０００９】なお、ここまでは従来からも有している機
能に過ぎず、したがって、この発明は以上の構成に切換
スイッチ１５、優先回路１６、演算器１７および表示器
１８等を付加して構成される。つまり、従来のままだと
無効電流補償機能を優先して制御することができないの
で、ここでは切換スイッチ１５および優先回路１６から
なる優先選択手段を設けて高調波補償機能だけでなく、
無効電流補償機能をも優先して行ない得るようにしたも
のである。It should be noted that the functions up to this point are nothing but conventional functions. Therefore, the present invention is configured by adding the changeover switch 15, the priority circuit 16, the computing unit 17, the display unit 18, etc. to the above-described structure. To be done. That is, if the conventional method is used, the reactive current compensation function cannot be prioritized and controlled. Therefore, the priority selection means including the changeover switch 15 and the priority circuit 16 is provided here, and not only the harmonic compensation function,
The reactive current compensation function is also given priority.
【００１０】さらには、演算器１７に対し系統の高調波
電流ｉｓ１，無効電流ｉｓ２および電圧ＶＳ、さらには
高調波補償成分Ｉｓｃや無効電流分Ｉｃなどを導入する
ことにより、高調波補償，無効電力補償の各補償状態を
表示器１８によりモニタし得るようにしている。Further, by introducing the harmonic current is1, reactive current is2 and voltage VS of the system to the arithmetic unit 17, the harmonic compensating component Isc and the reactive current component Ic are introduced, so that the harmonic compensating and reactive power can be obtained. Each compensation state of compensation can be monitored by the display 18.
【００１１】[0011]
【発明の効果】この発明によれば、高調波補償動作と無
効電流補償動作との選択動作が可能となり、要求に応じ
た柔軟な運用が可能となる。また、高調波補償，無効電
流補償の各補償状態を目で見ることができるので、安全
な運用が可能となる利点も得られる。According to the present invention, the selection operation of the harmonic compensation operation and the reactive current compensation operation can be performed, and the flexible operation according to the request can be performed. Further, since the respective compensation states of the harmonic compensation and the reactive current compensation can be visually observed, there is also an advantage that the safe operation is possible.
【図１】この発明の実施例を示す概要図である。FIG. 1 is a schematic diagram showing an embodiment of the present invention.
１Ａ，１Ｂ…負荷、２…アクティブフィルタ主回路、３
Ａ，３Ｂ，４Ａ，４Ｂ…変流器（ＣＴ）、５…変圧器
（ＰＴ）、６…負荷電流検出回路、７…電流変換器（Ｓ
／Ｃ）、８…高調波制御回路、９…バールトランスデュ
ーサ、１０…無効電力制御回路、１１…自動電流調節器
（ＡＣＲ）、１２…パルス幅変調（ＰＷＭ）回路、１３
…キャリア信号発生器、１４…パルス分配器（ＰＧ）、
１５…切換スイッチ、１６…優先回路、１７…演算器、
１８…表示器。1A, 1B ... Load, 2 ... Active filter main circuit, 3
A, 3B, 4A, 4B ... Current transformer (CT), 5 ... Transformer (PT), 6 ... Load current detection circuit, 7 ... Current converter (S
/ C), 8 ... Harmonic control circuit, 9 ... Bar transducer, 10 ... Reactive power control circuit, 11 ... Automatic current regulator (ACR), 12 ... Pulse width modulation (PWM) circuit, 13
... Carrier signal generator, 14 ... Pulse distributor (PG),
15 ... Changeover switch, 16 ... Priority circuit, 17 ... Arithmetic unit,
18 ... Display.
Claims (1)
を行なうアクティブフィルタに対し、優先選択手段を設
けていずれか一方の制御のみを優先的に実行可能にする
とともに、表示手段を設けて高調波補償，無効電流補償
の程度をモニタ可能にしたことを特徴とするアクティブ
フィルタの制御，表示方法。1. An active filter for performing harmonic compensation control and reactive current compensation control is provided with priority selection means so that only one of the controls can be preferentially executed, and a display means is provided to provide harmonics. A method of controlling and displaying an active filter characterized in that the degree of compensation and reactive current compensation can be monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6263457A JPH08126202A (en) | 1994-10-27 | 1994-10-27 | Active filter control and control status display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6263457A JPH08126202A (en) | 1994-10-27 | 1994-10-27 | Active filter control and control status display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08126202A true JPH08126202A (en) | 1996-05-17 |
Family
ID=17389780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6263457A Pending JPH08126202A (en) | 1994-10-27 | 1994-10-27 | Active filter control and control status display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08126202A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011030382A (en) * | 2009-07-28 | 2011-02-10 | Chugoku Electric Power Co Inc:The | Reactive power compensator and output sharing method for the reactive power compensator |
| CN102623996A (en) * | 2012-03-26 | 2012-08-01 | 西安交通大学 | Active power filter closed loop control method based on decoupling resonance regulator array |
| CN103812108A (en) * | 2014-01-24 | 2014-05-21 | 清华大学 | APF (Active Power Filter) control algorithm considering parameter perturbation of grid connected electric reactor |
| CN103928927A (en) * | 2014-03-11 | 2014-07-16 | 华南理工大学 | Controllable series compensation device and control method thereof |
| JP2018191373A (en) * | 2017-04-28 | 2018-11-29 | ダイキン工業株式会社 | Active filter device and air-conditioner using the same |
-
1994
- 1994-10-27 JP JP6263457A patent/JPH08126202A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011030382A (en) * | 2009-07-28 | 2011-02-10 | Chugoku Electric Power Co Inc:The | Reactive power compensator and output sharing method for the reactive power compensator |
| CN102623996A (en) * | 2012-03-26 | 2012-08-01 | 西安交通大学 | Active power filter closed loop control method based on decoupling resonance regulator array |
| CN103812108A (en) * | 2014-01-24 | 2014-05-21 | 清华大学 | APF (Active Power Filter) control algorithm considering parameter perturbation of grid connected electric reactor |
| CN103928927A (en) * | 2014-03-11 | 2014-07-16 | 华南理工大学 | Controllable series compensation device and control method thereof |
| JP2018191373A (en) * | 2017-04-28 | 2018-11-29 | ダイキン工業株式会社 | Active filter device and air-conditioner using the same |
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