JPS63290127A - Reactive power compensator - Google Patents
Reactive power compensatorInfo
- Publication number
- JPS63290127A JPS63290127A JP62123707A JP12370787A JPS63290127A JP S63290127 A JPS63290127 A JP S63290127A JP 62123707 A JP62123707 A JP 62123707A JP 12370787 A JP12370787 A JP 12370787A JP S63290127 A JPS63290127 A JP S63290127A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- becomes
- overvoltage
- control mode
- 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
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000010304 firing Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 description 22
- 238000010586 diagram Methods 0.000 description 3
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
- Y02E40/30—Reactive power compensation
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は電力系統用無効電力補償装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a reactive power compensator for a power system.
（従来の技術）
第２図に無効電力補償装置の一例であるサイリスタ制御
リアクトル（以下ＴＣＲと記す）の−構成例を示す、１
−１．１．２はサイリスタ、２はリアクトル、３はＰＴ
、４はＣＴで５はＴＣＨの制御回路である。(Prior Art) Fig. 2 shows an example of the configuration of a thyristor controlled reactor (hereinafter referred to as TCR), which is an example of a reactive power compensator.
-1.1.2 is thyristor, 2 is reactor, 3 is PT
, 4 is a CT, and 5 is a TCH control circuit.
第３図にＴＣＲ制御回路５の一例を示しその作用を説明
する。ＰＴ３より伝達された系統電圧信号から系統電圧
検出回路６により系統電圧値を検出し、それと基準電圧
７との差つまり誤差電圧ΔＶを減算器８で検出する６次
にＣＴ４からのＴＣＲの出力無効電流を電流検出器９に
より検知し、これとΔＶとを加算１１１０で加算する。FIG. 3 shows an example of the TCR control circuit 5 and its operation will be explained. The grid voltage detection circuit 6 detects the grid voltage value from the grid voltage signal transmitted from the PT 3, and the difference between it and the reference voltage 7, that is, the error voltage ΔV is detected by the subtracter 8. 6th Disable the TCR output from the CT 4 The current is detected by the current detector 9, and this and ΔV are added in addition 1110.
加算器ｌＯの出力を伝達関数１１を通過させることによ
りＴＣＨの出力すべき電流Ｉ ａｌｌｋ。が決定される
。このＩ ａｕｌｌ。は自動制御装置で決定したＴＣＨ
の発生すべき無効電流であり破線Ａで囲まれた部分が自
動制御装置に相当する。By passing the output of the adder lO through the transfer function 11, the current I allk to be output from the TCH. is determined. This I aul. is the TCH determined by the automatic control device
This is the reactive current that should be generated, and the part surrounded by the broken line A corresponds to the automatic control device.
次に１２は可変設定器でＴＣＨの発生すべき無効電流を
示しており、この出力１１１ａｎは手動制御装置で決定
したＴＣＨの発生すべき無効電流であり破線Ｂで囲まれ
た部分が手動制御装置に相当する。Next, 12 is a variable setting device that indicates the reactive current to be generated by the TCH, and this output 111an is the reactive current to be generated by the TCH determined by the manual control device, and the part surrounded by the broken line B is the manual control device. corresponds to
次に１３は自動制御は手動制御を選択する切り換え器で
あり、運転員の意志により自動制御か手動制御かを選択
する。いま説明の便宜上１４を運転員が自動運転を希望
する時デジタル信号のｒＯＪを出力し手動運転を希望す
る時デジタル信号「１」を出力する運転モード選択回路
とする。また切り換え器１３は運転モード選択回路１４
の出力が「０」の時、Ｉ ａｕｔｏを点弧角決定回路１
５に伝達し、運転モード選択器１４の出力が「１」の時
Ｉｍａｎを点弧角決定回路１５に伝達するように動作す
る。Next, 13 is a switch for selecting automatic control or manual control, and the operator selects automatic control or manual control according to his will. For convenience of explanation, 14 is assumed to be an operation mode selection circuit that outputs a digital signal rOJ when the operator desires automatic operation, and outputs a digital signal "1" when the operator desires manual operation. In addition, the switch 13 is an operation mode selection circuit 14.
When the output of is "0", I auto is set to firing angle determining circuit 1.
5 and operates to transmit Iman to the firing angle determining circuit 15 when the output of the operation mode selector 14 is "1".
点弧角決定回路１５はＴＣＲの発生すべき無効電流Ｉ
ａｕｔｏまたはｌ１ｌａｎを発生するサイリスタの点弧
角αを決定する回路であり、ゲートパルス発生器１６に
おいて点弧角αであるゲートパルスがサイリスタ１−１
．１−２に与えられる。The firing angle determining circuit 15 determines the reactive current I to be generated by the TCR.
This circuit determines the firing angle α of the thyristor that generates auto or l1lan, and the gate pulse having the firing angle α in the gate pulse generator 16 is applied to the thyristor 1-1.
．． 1-2 is given.
（発明が解決しようとする問題点）
このような制御回路を使用した場合の問題点を以下に説
明する。(Problems to be Solved by the Invention) Problems when using such a control circuit will be explained below.
いま運転員が手動制御でＴＣＲを運転している時、電力
系統に事故が発生し、系統電圧が過電圧や不足電圧にな
ってもまた電力動揺や周波数動揺が発生しても運転員が
手動でＴＣＲを制御しているために適切に対応ができな
い不具合やまた運転員がメータの読み違いなどでＴＣＲ
の発生無効電力を適正量より出しすぎたり、しぼりすぎ
たりして系統を過電圧や不足電圧にする不具合があった
。Now, when an operator is operating the TCR under manual control, if an accident occurs in the power grid and the grid voltage becomes overvoltage or undervoltage, or if power fluctuation or frequency fluctuation occurs, the operator must manually control the TCR. Due to the TCR being controlled, it is not possible to respond appropriately, or the operator misreads the meter, etc.
There was a problem in which the reactive power generated by the system was exceeded or squeezed too much, causing overvoltage or undervoltage in the grid.
本発明の目的は、無効電力補償装置を手動で制御してい
る時に、電力系統に過電圧や不足電圧あるいは電力動揺
や周波数動揺が発生した場合にただちに自動制御に切り
換え過電圧や不足電圧あるいは電力動揺や周波数動揺を
抑制するような無効電力補償装置を提供することにある
。An object of the present invention is to immediately switch to automatic control when overvoltage, undervoltage, power fluctuation, or frequency fluctuation occurs in the power system while manually controlling a reactive power compensator. An object of the present invention is to provide a reactive power compensator that suppresses frequency fluctuations.
（問題点を解決するための手段）
本発明の前述の目的を達成するために従来の制御回路に
過電圧検出回路あるいは不足電圧検出回路あるいは電力
動揺検出回路あるいは周波数動揺検出回路を設けるとと
もにその出方により前述の切換スイッチを自動的に切り
換える自動制御モード選択回路を設ける。(Means for Solving the Problems) In order to achieve the above-mentioned object of the present invention, an overvoltage detection circuit, an undervoltage detection circuit, a power fluctuation detection circuit, or a frequency fluctuation detection circuit is provided in the conventional control circuit, and how to solve the problem. An automatic control mode selection circuit is provided for automatically switching the aforementioned changeover switch.
（作 用）
本発明の作用は手動制御で無効電力補償装置を制御して
いる時、過電圧検出回路あるいは不足電圧検出回路ある
いは電力動揺検出回路あるいは周波数動揺検出回路で過
電圧あるいは不足電圧あるいは電力動揺あるいは周波数
動揺を検出したら自動制御モード選択回路で直ちに手動
制御から自動制御に切り換える。(Function) The function of the present invention is that when controlling a reactive power compensator by manual control, an overvoltage detection circuit, an undervoltage detection circuit, a power fluctuation detection circuit, or a frequency fluctuation detection circuit detects overvoltage, undervoltage, or power fluctuation. When frequency fluctuation is detected, the automatic control mode selection circuit immediately switches from manual control to automatic control.
（実 施 例）
本発明の一実施例として過電圧検出回路を設けた場合の
一構成例を第１図に示す、従来技術の説明で使用した番
号と同一番号のものは同一機能を有する。(Embodiment) FIG. 1 shows an example of a configuration in the case where an overvoltage detection circuit is provided as an embodiment of the present invention.Those with the same numbers as those used in the description of the prior art have the same functions.
１７は比較器、１８は過電圧値を示す設定器、１７と１
８で過電圧検出回路を構成しており、過電正時比較器１
７の出力は「１」、過電圧でない時には「０」を出力す
る。17 is a comparator, 18 is a setting device that indicates an overvoltage value, 17 and 1
8 constitutes an overvoltage detection circuit, and overvoltage positive comparator 1
7 outputs "1" and "0" when there is no overvoltage.
１９はフリップフロップ（以下ＦＦと記す）、２０はＮ
ＯＴ回路、２１はＡＮＤ回路、２２はリセット回路で運
転開始時や運転員がＦＦ１９をリセットしたい時に「１
」を出力する。19 is a flip-flop (hereinafter referred to as FF), 20 is N
The OT circuit, 21 is an AND circuit, and 22 is a reset circuit.
" is output.
１９、２０．２１で自動制御モード選択回路を構成して
いる。19, 20, and 21 constitute an automatic control mode selection circuit.
まず運転員が自動制御を選択している時は運転モード選
択回路１４の出力は「０」であるからＡＮＤ回路２０の
出力は「０」である、よって切り換え器１３は伝達関数
１１の出力であるＩ ａｕｔｏを選択して点弧角決定回
路１５に伝達する。First, when the operator selects automatic control, the output of the operation mode selection circuit 14 is "0", so the output of the AND circuit 20 is "0", so the switch 13 is the output of the transfer function 11. A certain I auto is selected and transmitted to the firing angle determining circuit 15.
この作用は従来技術の作用の一つである。This effect is one of the effects of the prior art.
次に運転員が手動制御を選択していてかつ過電圧が発生
していない時について説明する６系統電圧検出回路６の
出力と設定器１８の示す過電圧値とを比較器１７と比較
すると系統電圧は過電圧で無いので比較器１７の出力は
「０」である、一方ＦＦ１９は運転開始時リセットされ
ているのでＦＦ１９の出力ＱはｒＯＪよってＮＯＴ回路
２０の出力は「１」、また運転モード選択回路１４の出
方は手動運転を選択しているので「１」、よってＡＮＤ
回路２゜の出力は「１」である。よって切換え器１３は
可変設定器１２の出力であるＩｍａｎを点弧角決定回路
１５に伝達する。つまりＴＣＲは運転員によって決めら
れた出力 １．ａｎを出力する。Next, we will explain when the operator has selected manual control and no overvoltage has occurred.When the output of the 6-system voltage detection circuit 6 and the overvoltage value indicated by the setting device 18 are compared with the comparator 17, the system voltage is Since there is no overvoltage, the output of the comparator 17 is "0". On the other hand, since the FF 19 is reset at the start of operation, the output Q of the FF 19 is rOJ, so the output of the NOT circuit 20 is "1", and the operation mode selection circuit 14 Since manual operation is selected, the result is "1", so AND
The output of circuit 2° is "1". Therefore, the switch 13 transmits Iman, which is the output of the variable setting device 12, to the firing angle determining circuit 15. In other words, TCR is the output determined by the operator.1. Output an.
次にこの状態から系統電圧が過電圧になった場合につい
て説明する。Next, a case where the system voltage becomes an overvoltage from this state will be explained.
系統電圧検出回路６の出力と、設定器１８の示す過電圧
値を比較器１７で比較する系統電圧は過電圧なので比較
器１７の出力は「１」となる、よってＦＦ１９はセット
されその出力Ｑは「１」となる、よってＮＯＴ回路２０
の出力は「０」となるのでＡＮＤ回路２１の出力もｒＯ
Ｊとなる。このため切り換え器１３は手動制御の出力で
あるｌ１ｌｌａｎを点弧角決定回路１５に伝達していた
状態からＡＮＤ回路２１の出力がｒＯＪになった時、自
動制御の出力である工、□。を点弧角決定回路１５に伝
達するように切り換わる。The comparator 17 compares the output of the grid voltage detection circuit 6 and the overvoltage value indicated by the setting device 18. Since the grid voltage is an overvoltage, the output of the comparator 17 is "1". Therefore, the FF 19 is set and its output Q is "1". 1", therefore the NOT circuit 20
Since the output of the AND circuit 21 is "0", the output of the AND circuit 21 is also rO
It becomes J. Therefore, when the output of the AND circuit 21 becomes rOJ from the state in which the output of the manual control, l1llan, is transmitted to the firing angle determination circuit 15, the switch 13 transmits the output of the automatic control, l1llan, to the firing angle determination circuit 15. is transmitted to the firing angle determining circuit 15.
以上の説明では過電圧発生時手動制御モードから自動制
御モードに切り換わる場合について説明したが、過電圧
検出回路の代りに不足電圧検出を設ければ系統電圧が不
足電圧になった時手動制御モードから自動制御モードに
切り換わる。他に過電圧検出回路の代りに電力動揺検出
回路あるいは周波数動揺検出回路を設ければ電力動揺時
あるいは周波数動揺時に手動制御モードから自動制御モ
ードに切り換わる。The above explanation deals with switching from manual control mode to automatic control mode when an overvoltage occurs, but if an undervoltage detection circuit is provided instead of an overvoltage detection circuit, the automatic control mode will switch from manual control mode to automatic control mode when grid voltage becomes undervoltage. Switch to control mode. Alternatively, if a power fluctuation detection circuit or a frequency fluctuation detection circuit is provided in place of the overvoltage detection circuit, the manual control mode can be switched to the automatic control mode at the time of power fluctuation or frequency fluctuation.
その他に過電気構出回路、不足電圧検出回路、電力動揺
検出回路１周波数動揺検出回路を設け、それらのうち一
つでも「１」を出力すれば手動制御モードから自動制御
モードに切り換わるようにしても良い。In addition, an over-electricity circuit, an under-voltage detection circuit, a power fluctuation detection circuit, and a single-frequency fluctuation detection circuit are provided, and if any one of them outputs "1", the control mode is switched from manual control mode to automatic control mode. It's okay.
以上説明したように無効電力補償装置を手動制御モード
で運転している時系統電圧が過電圧あるいは不足電圧に
なった時あるいは電力動揺あるいは周波数動揺を発生し
た時１手動制御モードから自動制御モードに切り換わり
過電圧、不足電圧、電力動揺、周波数動揺を自動的に抑
制することが出来る。As explained above, when the reactive power compensator is operated in manual control mode, when the grid voltage becomes overvoltage or undervoltage, or when power fluctuation or frequency fluctuation occurs, 1. Switch from manual control mode to automatic control mode. Instead, overvoltage, undervoltage, power fluctuations, and frequency fluctuations can be automatically suppressed.
第１図は本発明の一実施例を示すブロック図、第２図は
無効電力補償装置の一構成例を示す図、第３図は無効電
力補償装置の従来の制御回路を示すブロック図である。
１・・・サイリスタ、 ２・・・リアクトル。
３・・・ＰＴ、 ４・・・ＣＴ。
５・・・制御回路、 ６・・・系統電圧検出回
路。
７・・・基準電圧、 ８・・・減算器、９・・
・電流検出器、１Ｇ・・・加算器。
１１・・・伝達関数、 １２・・・可変設定器。
１３・・・切り換え器、
１４・・・運転モード選択回路。
１５・・・点弧角決定回路、
１６・・・ゲートパルス発生器、
１７・・・比較器、 １８・・・設定器、１９
・・・ブリップフロップ、２０・・・ＮＯＴ回路、２１
・・・ＡＮＤ回路、 ２２・・・リセット回路。
代理人 弁理士 則 近 憲 佑
同 第子丸 健
室刀系続
第２図FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the configuration of a reactive power compensator, and FIG. 3 is a block diagram showing a conventional control circuit for a reactive power compensator. . 1... Thyristor, 2... Reactor. 3...PT, 4...CT. 5... Control circuit, 6... System voltage detection circuit. 7...Reference voltage, 8...Subtractor, 9...
・Current detector, 1G...adder. 11...Transfer function, 12...Variable setting device. 13...Switcher, 14...Operation mode selection circuit. 15... Firing angle determination circuit, 16... Gate pulse generator, 17... Comparator, 18... Setting device, 19
...Blip-flop, 20...NOT circuit, 21
...AND circuit, 22...reset circuit. Agent Patent Attorney Noriyuki Chika Yudo Daishimaru Kenmuro Sword Series Part 2
Claims (1)
無効電力を自動で制御する自動制御装置と手動で制御す
る手動制御装置と自動制御と手動制御を切り換える切り
換え器とを具備した無効電力補償装置において、前記無
効電力補償装置を手動で制御中、前記電力系統の電圧が
過電圧あるいは不足電圧になった時、あるいは電力動揺
あるいは周波数動揺が発生した時、手動制御から自動制
御へ自動的に切り換える手段を具備したことを特徴とす
る無効電力補償装置。A reactive power compensator equipped with an automatic control device that automatically controls output reactive power of a reactive power compensator for stabilizing a power system, a manual control device that manually controls it, and a switch that switches between automatic control and manual control. means for automatically switching from manual control to automatic control when the voltage of the power system becomes overvoltage or undervoltage, or when power fluctuation or frequency fluctuation occurs while the reactive power compensator is being manually controlled. A reactive power compensator characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62123707A JPS63290127A (en) | 1987-05-22 | 1987-05-22 | Reactive power compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62123707A JPS63290127A (en) | 1987-05-22 | 1987-05-22 | Reactive power compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63290127A true JPS63290127A (en) | 1988-11-28 |
Family
ID=14867355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62123707A Pending JPS63290127A (en) | 1987-05-22 | 1987-05-22 | Reactive power compensator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63290127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7944184B2 (en) * | 2008-04-07 | 2011-05-17 | Korea Electric Power Corporation | Static compensator apparatus for HVDC system |
-
1987
- 1987-05-22 JP JP62123707A patent/JPS63290127A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7944184B2 (en) * | 2008-04-07 | 2011-05-17 | Korea Electric Power Corporation | Static compensator apparatus for HVDC system |
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