JPH06276745A - Controller for ac-dc converter - Google Patents

Controller for ac-dc converter

Info

Publication number
JPH06276745A
JPH06276745A JP5053621A JP5362193A JPH06276745A JP H06276745 A JPH06276745 A JP H06276745A JP 5053621 A JP5053621 A JP 5053621A JP 5362193 A JP5362193 A JP 5362193A JP H06276745 A JPH06276745 A JP H06276745A
Authority
JP
Japan
Prior art keywords
circuit
converter
current
output
constant
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
Application number
JP5053621A
Other languages
Japanese (ja)
Inventor
Naomi Nakamura
尚未 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP5053621A priority Critical patent/JPH06276745A/en
Publication of JPH06276745A publication Critical patent/JPH06276745A/en
Pending legal-status Critical Current

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Landscapes

  • Supply And Distribution Of Alternating Current (AREA)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To enable response without generating delay in the operating time of starting and tidal current inversion by adding an arbitrary DC reference correction value to a current reference for a certain fixed time at the time of starting or the time of tidal current inversion and accelerating the integral action time of the integrating circuit of the reference correction value. CONSTITUTION:A converter control circuit 100A has a constant-voltage control circuit 11A, a constant allowance-angle control circuit 12A, a constant-current control circuit 13A, a current reference-value adjusting circuit 50A and a control advance-angle preference circuit 28A, etc. An output from a current reference- value output circuit 27 is input to the current reference-value adjusting circuit 50A through a transmission circuit 26A for a certain constant period at the time of starting in converter operation or the time of tidal current inversion from converter operation to power inverter operation, a current reference correction value in the phase advance direction is added, and an output from the adjusting circuit 50A is input to the constant-current control circuit 13A. Accordingly, the integral action time of the constant-current control circuit 13A is accelerated, thus preventing an adverse effect on a system and equipments by time delay.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、周波数変換装置、直流
送電設備等に使用される、交直変換装置の制御装置に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an AC / DC converter used in frequency converters, DC power transmission equipment and the like.

【0002】[0002]

【従来の技術】図5に、直流送電設備に交直変換装置を
用いた従来の交直変換装置の制御装置を説明するための
概略ブロック図を示す。変換器1A,1Bの直流送電線
路3によって接続され、各変換器1A,1Bの直流側は
それぞれ直流リアクトル2A,2Bを介して交流側は変
換器用変圧器4A,4B、しゃ断器5A,5Bを介して
それぞれの交流系統6A,6Bに接続されている。
2. Description of the Related Art FIG. 5 is a schematic block diagram for explaining a control device for a conventional AC / DC converter using an AC / DC converter for DC power transmission equipment. The converters 1A and 1B are connected by the DC transmission line 3, and the converters 1A and 1B are connected on the DC side via the DC reactors 2A and 2B, and on the AC side to the converter transformers 4A and 4B and the circuit breakers 5A and 5B. It is connected to each AC system 6A, 6B via.

【0003】従来、変換器1A,1Bには定余裕角制御
回路12A,12B、定電圧制御回路11A,11B、
定電流制御回路13A,13Bが具備されており、定余
裕角制御回路12A,12Bはその余裕角設定器18
A,18Bの出力である余裕角基準値に変換器1A,1
Bの余裕角が追従するように動作する。
Conventionally, the converters 1A and 1B have constant margin angle control circuits 12A and 12B, constant voltage control circuits 11A and 11B, and
The constant current control circuits 13A and 13B are provided, and the constant margin angle control circuits 12A and 12B include the margin angle setter 18.
The converter 1A, 1
It operates so that the margin angle of B follows.

【0004】直流電圧設定器14A,14Bの出力であ
る電圧基準値と、直流電圧を直流電圧検出器15A,1
5Bで検出し制御回路にて取り扱い易い値に変換するた
めの電圧/電圧変換回路16A,16Bを介してサミン
グ回路17A,17Bに入力される直流電圧検出値との
差がサミング回路17A,17Bで求められ、その差の
値が定電圧制御回路11A,11Bに入力されること
で、直流送電線路3の直流電圧が前記電圧基準値に追従
するように制御されることになる。又、伝送制御回路2
6A,26Bの出力である電流基準値と、直流電流を直
流電流検出器21A,21Bで検出し電流/電圧変換回
路22A,22Bで制御回路として取り扱い易い値に変
換された直流電流検出値とがサミング回路23A,23
Bに入力される。その差の値が定電流制御回路13A,
13Bに入力されることで、直流送電線路3に流れる直
流電流が前記電流基準に追従するように制御されること
になる。
The DC voltage detectors 15A, 1 are used to detect the DC reference voltage output from the DC voltage setters 14A, 14B and the DC voltage.
The summing circuits 17A and 17B detect the difference between the DC voltage detection values input to the summing circuits 17A and 17B through the voltage / voltage conversion circuits 16A and 16B for detection by the control circuit 5B and conversion into values that can be easily handled by the control circuit. The value of the difference obtained is input to the constant voltage control circuits 11A and 11B, so that the DC voltage of the DC power transmission line 3 is controlled so as to follow the voltage reference value. Also, the transmission control circuit 2
The current reference value which is the output of 6A, 26B and the DC current detection value obtained by detecting the DC current by the DC current detectors 21A, 21B and converted by the current / voltage conversion circuits 22A, 22B into a value that is easy to handle as a control circuit. Summing circuits 23A, 23
Input to B. The value of the difference is the constant current control circuit 13A,
By being input to 13B, the direct current flowing through the direct current transmission line 3 is controlled so as to follow the current reference.

【0005】スイッチ24A,24Bは変換器を逆変換
運転する変換器の方のみが閉となり、電流マ―ジン設定
器25A,25Bの出力である電流マ―ジンが前記サミ
ング回路23A,23Bに入力される。この電流マ―ジ
ンの機能と、前記定余裕角制御回路12A,12B、前
記定電圧制御回路11A,11B、前記定電流制御回路
13A,13Bの出力の内その出力として最も変換器の
制御角の進んでいる出力のみをその出力とする制御進み
角優先回路28A,28Bの機能とにより、今仮にスイ
ッチ24Bが閉で、スイッチ24Aが開にないるとする
と、前記制御進み角優先回路28Aには、前記定電流制
御回路13Aの出力が出力され、前記制御進み角優先回
路28Bには前記定余裕角制御回路12B、前記定電圧
制御回路11Bの出力の内、制御角として進んでいる方
の出力、一般には前記定電圧制御回路11Bの出力が出
力される。それぞれの前記制御進み角優先回路28A,
28Bの出力は、位相制御回路29A,29Bに入力さ
れ、ここで変換器の点弧タイミングを決めるパルス信号
に変換され、パルス増幅回路30A,30Bを介して各
変換器にゲ―トパルス信号として与えられるように構成
されている。
The switches 24A and 24B are closed only in the converter for performing reverse conversion operation, and the current margin output from the current margin setting devices 25A and 25B is input to the summing circuits 23A and 23B. To be done. Among the outputs of the constant margin control circuits 12A and 12B, the constant voltage control circuits 11A and 11B, and the constant current control circuits 13A and 13B, the function of this current margin is the most control angle of the converter. Due to the function of the control advance angle priority circuits 28A and 28B that output only the advancing output, assuming that the switch 24B is closed and the switch 24A is not open, the control advance angle priority circuit 28A has The output of the constant current control circuit 13A is output, and the output of the output of the constant margin angle control circuit 12B or the constant voltage control circuit 11B that is advancing as the control angle is output to the control advance angle priority circuit 28B. Generally, the output of the constant voltage control circuit 11B is output. Each of the control advance angle priority circuits 28A,
The output of 28B is input to the phase control circuits 29A and 29B, where it is converted into a pulse signal that determines the ignition timing of the converter, and is given to each converter as a gate pulse signal via the pulse amplifier circuits 30A and 30B. It is configured to be.

【0006】各制御回路は、出力のリミッタを備えてお
り、更に、その値は起動/停止や潮流反転等の変換器の
運転状態に応じて変化するのが一般的である。次に、潮
流反転の動作について説明する。図6に潮流反転後の動
作点を示す。
Each control circuit is provided with an output limiter, and its value generally changes according to the operating state of the converter such as start / stop and power flow reversal. Next, the power flow reversal operation will be described. FIG. 6 shows the operating points after the power flow reversal.

【0007】潮流反転の方法として前記スイッチ24
A,24Bの電流マ―ジン機能による方法がある。前述
のようにスイッチ24Bが閉、スイッチ24Aが開のと
き、変換器1Bは通常は定電圧制御、変換器1Aは定電
流制御され、動作点は図6のA点となるが、前記スイッ
チ24Aが閉、スイッチ24Bが開に切換えられると、
変換器1A側の電流基準値Idpは前記伝送制御回路26
Aの出力より電流マ―ジン△Idp分小さくなるため、定
電流制御回路が直流電流を減少させようとしてαを大き
くする。一方、変換器1B側では電流基準値Idpは前記
位相制御回路26Bの出力より電流マ―ジン分小さい状
態から前記位相制御回路26Bの出力となり、つまり、
電流マ―ジン分大きくなるため、変換器1A側の働きに
よりβを大きくする。このように変換器1A側、変換器
1B側の定電流制御が作用し合ってα,βはますます大
きくなってゆき、直流電圧の極性が反転し、動作点はB
点となる。通常、潮流反転に要する時間は200msか
ら500msである。以上説明したように制御回路を構
成すること、制御動作することは公知の技術である。
The switch 24 is used as a method for reversing the power flow.
There is a method using the current margin function of A and 24B. As described above, when the switch 24B is closed and the switch 24A is open, the converter 1B is normally controlled by constant voltage and the converter 1A is controlled by constant current, and the operating point is point A in FIG. Is closed and switch 24B is opened,
The current reference value Idp on the converter 1A side is the transmission control circuit 26.
Since the current margin ΔIdp is smaller than the output of A, the constant current control circuit increases α in an attempt to reduce the direct current. On the other hand, on the converter 1B side, the current reference value Idp becomes the output of the phase control circuit 26B from the state in which it is smaller than the output of the phase control circuit 26B by the current margin, that is,
Since the current margin is increased, β is increased by the action of the converter 1A side. In this way, the constant current control of the converter 1A side and the converter 1B side act on each other, α and β become larger and larger, the polarity of the DC voltage is reversed, and the operating point is B
It becomes a point. Usually, the time required for power flow reversal is 200 ms to 500 ms. It is a known technique to configure the control circuit and perform the control operation as described above.

【0008】[0008]

【発明が解決しようとする課題】図5の従来装置におい
て、定電流制御回路13A,13Bを積分を含むアルゴ
リズムで構成した際に、次の如き問題がある。変換器1
A,1Bの起動や停止、又は潮流反転のときには運転点
が大きく変化する。定電流制御回路13A,13Bの制
御出力が定常運転状態で大きく変化するためには積分回
路の積算が必要となる。安定した状態では定電流制御回
路13A,13Bへの入力は零となまり、積分回路の出
力値が定電流制御回路13A,13Bの出力値となるか
らである。この積分回路の積算時間は、積分回路のゲイ
ンと定電流制御回路13A,13Bへの入力に依存す
る。
In the conventional device of FIG. 5, when the constant current control circuits 13A and 13B are constructed by an algorithm including integration, there are the following problems. Converter 1
When A, 1B are started or stopped, or the power flow is reversed, the operating point changes significantly. In order for the control outputs of the constant current control circuits 13A and 13B to greatly change in the steady operation state, integration of the integrating circuit is necessary. This is because the input to the constant current control circuits 13A and 13B becomes zero in a stable state, and the output value of the integrating circuit becomes the output value of the constant current control circuits 13A and 13B. The integration time of this integration circuit depends on the gain of the integration circuit and the input to the constant current control circuits 13A and 13B.

【0009】ここで仮に、電流マ―ジンΔIdpが最低運
転電流値とほぼ同じ値であるとし、変換器1Aが逆変換
器運転をしていて、その状態から変換器運転への潮流反
転を行うとすると、定電流制御回路13Aへの電流基準
値の入力は、直流電流検出値(Id)−電流基準値(Id
p) となる。直流電流検出値がほぼ電流基準値と同じで
あったとすると、定電流制御回路13Aへの入力はほぼ
零となり、積分回路の積算が進まなくなる。積算が進ま
ないことにより変換器1Aの電圧がなかなか変化しない
ので潮流反転動作が極めて遅くなる。また変換器1Aが
変換器運転をしている状態で、変換器から逆変換器への
潮流反転を行う場合には、定電流制御回路13Aへの入
力値は、直流電流検出値(Id)−電流基準値(Idp) +
電流マ―ジン(ΔIdp) となる。ここで直流電流検出値
がほぼ電流基準値と同じであったとすると、定電流制御
回路13Aへの入力値は電流マ―ジン分のみとなり、電
流マ―ジンと積分のゲインによっては積分回路の積算が
遅くなる。そのため潮流反転時間が長くなる。
Here, assuming that the current margin ΔIdp is almost the same as the minimum operating current value, the converter 1A is in the reverse converter operation, and the power flow is reversed from that state to the converter operation. Then, the input of the current reference value to the constant current control circuit 13A is as follows: DC current detection value (Id) -current reference value (Id
p). Assuming that the DC current detection value is almost the same as the current reference value, the input to the constant current control circuit 13A becomes almost zero, and the integration of the integrating circuit does not proceed. Since the voltage of the converter 1A does not change easily because the integration does not proceed, the power flow reversal operation becomes extremely slow. When the converter 1A is in the converter operation and the power flow is reversed from the converter to the inverse converter, the input value to the constant current control circuit 13A is the DC current detection value (Id)- Current reference value (Idp) +
The current margin (ΔIdp) is obtained. If the detected DC current value is almost the same as the current reference value, the input value to the constant current control circuit 13A is only the current margin, and depending on the current margin and the integral gain, the integration circuit integration Will be late. Therefore, the flow reversal time becomes long.

【0010】次に起動時について説明する。停止中の初
期状態で定電流制御回路13Aの出力は起動位相に抑え
られている。ゲ―トパルスの出力が始まってから定電流
制御回路13Aの出力にかかっているリミッタが開くの
で、運転点への位相変化量が大きいため潮流反転の時と
同様に起動時間が長くなる。停止時については、停止す
ることにより各制御回路にかかっているリミッタを起動
位相へと閉じていき直流電圧を絞る。制御の応答よりも
リミッタの動きが速い分は問題はない。
Next, the start-up time will be described. The output of the constant current control circuit 13A is suppressed to the starting phase in the initial state during the stop. Since the limiter that is applied to the output of the constant current control circuit 13A opens after the output of the gate pulse starts, the phase change amount to the operating point is large, so that the startup time becomes long as in the case of the power flow reversal. At the time of stop, by stopping, the limiter applied to each control circuit is closed to the starting phase and the DC voltage is reduced. There is no problem as long as the limiter moves faster than the control response.

【0011】定電流制御回路13Aの応答が遅いことに
より電流断続が発生し、変換器に大変な悪影響を与える
恐れがある。また、電流断続が発生しないまでも、系統
側のトラブルなどにより緊急の電力応援が必要となった
際、起動や潮流反転の時間が通常の変換器システムの応
動時間よりも極端に遅い場合には、緊急応援の出力が遅
くなり系統の状態によっては電力動揺が発生し、機器や
系統に悪影響を及ぼす恐れがある。
The slow response of the constant current control circuit 13A may cause a current interruption, which may have a serious adverse effect on the converter. Even if the current is not interrupted, when emergency power support is needed due to a trouble on the system side, if the start-up or power flow reversal time is extremely slower than the response time of the normal converter system, , The output of emergency assistance becomes slow, and power fluctuation may occur depending on the state of the system, which may adversely affect the equipment and system.

【0012】本発明の目的は、前述従来例の持つ不具合
を解消するもので、交直変換器の定電流制御回路を積分
を含むアルゴリズムで構成した場合に、起動や潮流反転
の動作時間に遅れが生じることが無く応答できる交直変
換装置の制御装置を提供することにある。
An object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, and when the constant current control circuit of the AC / DC converter is constructed by an algorithm including integration, there is a delay in the operation time of starting or power flow inversion. It is an object of the present invention to provide a control device for an AC / DC converter that can respond without causing a problem.

【0013】[0013]

【課題を解決するための手段】上記目的を達成するため
に請求項1の交直変換装置の制御装置は、直流側が共通
接続され、交流側がそれぞれ異る交流系統に接続される
交直変換装置の直流電圧を直流電圧基準値に追従させる
ように制御する定電圧制御回路と、前記交直変換装置の
余裕角を一定に制御する定余裕角制御回路と、前記交直
変換装置の直流電流を直流電流基準値に追従させるよう
に制御する定電流制御回路と、それぞれの制御回路の出
力値である制御角度の進み優先をとる制御進み角優先回
路を具備し、且つ、前記定電流制御回路の入力側に、直
流電流基準補正値出力回路と、該回路の出力を前記交直
変換装置の運転状態により入り切りするスイッチ回路
と、該スイッチ回路の出力と前記直流電流基準値を加算
するサミング回路とから成る電流基準値調整回路を設け
たことを特徴するものである。
In order to achieve the above object, a controller of an AC / DC converter according to a first aspect of the present invention is a DC / AC converter in which a DC side is commonly connected and an AC side is connected to different AC systems. A constant voltage control circuit for controlling the voltage to follow the DC voltage reference value, a constant margin angle control circuit for controlling the margin angle of the AC / DC converter to a constant value, and a DC current of the AC / DC converter for the DC current reference value. A constant current control circuit for controlling so as to follow, and a control lead angle priority circuit that gives priority to the advance of the control angle that is the output value of each control circuit, and on the input side of the constant current control circuit, A direct current reference correction value output circuit, a switch circuit for turning on / off the output of the circuit depending on the operating state of the AC / DC converter, and a summing circuit for adding the output of the switch circuit and the direct current reference value. It is to characterized in that a et made current reference value adjusting circuit.

【0014】又、上記目的を達成するために請求項2の
交直変換装置の制御装置は、請求項1における直流電流
基準補正値出力回路と、該回路の出力を前記交直変換装
置の運転状態により入り切りするスイッチ回路を少くと
も2組設けたものである。
In order to achieve the above object, a controller for an AC / DC converter according to a second aspect of the present invention provides a DC current reference correction value output circuit according to the first aspect and an output of the circuit according to an operating state of the AC / DC converter. At least two sets of switch circuits for turning on and off are provided.

【0015】更に、上記目的を達成するために請求項3
の交直変換装置の制御装置は、請求項1におけるスイッ
チ回路の出力を、一次遅れ回路を介してサミング回路に
加えるようにし、或いは請求項2における少くとも2組
のスイッチ回路の出力を、一次遅れ回路を介してサミン
グ回路に加えるようにしたものある。
Furthermore, in order to achieve the above-mentioned object, claim 3
The control device of the AC / DC converter of claim 1 applies the output of the switch circuit according to claim 1 to the summing circuit via the primary delay circuit, or the output of at least two sets of switch circuits according to claim 2 with the primary delay. There is one that is added to the summing circuit through the circuit.

【0016】[0016]

【作用】前述のように構成された請求項1の発明によれ
ば、変換器運転で起動するときまたは逆変換器運転から
変換器運転への潮流反転のときに、ある一定時間電流基
準に任意の直流電流基準補正値を加算し、定電流制御回
路への入力値を大きくし積分回路の積分時間を速くして
いるため、起動や潮流反転の動作時間に遅れが生じるこ
とが無く応答できる。
According to the invention of claim 1, which is configured as described above, at the time of starting in the converter operation or in the case of reversing the power flow from the inverse converter operation to the converter operation, the current reference is arbitrarily set for a certain fixed time. Since the DC current reference correction value is added and the input value to the constant current control circuit is increased to increase the integration time of the integration circuit, it is possible to respond without delay in the operation time of start-up or power flow inversion.

【0017】又、請求項2の発明によれば、変換器運転
で起動するときまたは逆変換器運転から変換器運転への
潮流反転のときに加え、更に逆変換器運転で起動すると
き又は、変換器運転から逆変換器運転への潮流反転の時
にも、ある一定時間電流基準に任意の直流電流基準補正
値を加算し、定電流制御回路への入力値を大きくし積分
回路の積分時間を速くしているため、起動や潮流反転の
動作時間に遅れが生じることが無く応答できる。
According to the second aspect of the present invention, in addition to starting at the converter operation or reversing the power flow from the inverse converter operation to the converter operation, further starting at the inverse converter operation, or Even when reversing the flow from converter operation to inverse converter operation, add an arbitrary DC current reference correction value to the current reference for a certain period of time, increase the input value to the constant current control circuit, and increase the integration time of the integration circuit. Since it is faster, it can respond without delay in the operation time of startup and power flow reversal.

【0018】更に、請求項3の発明によれば、変換器運
転で起動するときまたは逆変換器運転から変換器運転へ
の潮流反転のときに加え、更に逆変換器運転で起動する
とき又は、変換器運転から逆変換器運転への潮流反転の
時にも、ある一定時間電流基準に任意の直流電流基準補
正値を一次遅れ回路介して加算し、定電流制御回路への
入力値を大きくし積分回路の積分時間を速くしているた
め、起動や潮流反転の動作時間に遅れが生じることが無
く応答できることに加え、一次遅れ回路の作用により電
流基準値がステップ状に変化しないため起動や潮流反転
の時に電流が動揺しない。
Further, according to the invention of claim 3, in addition to starting at the converter operation or at the time of power reversal from the inverse converter operation to the converter operation, further starting at the inverse converter operation, or Even when the power flow is reversed from converter operation to inverse converter operation, an arbitrary DC current reference correction value is added to the current reference for a certain period of time via the primary delay circuit, and the input value to the constant current control circuit is increased and integrated. Since the integration time of the circuit is shortened, it can respond without delay in the operation time of start-up and power flow reversal, and since the current reference value does not change stepwise due to the action of the first-order delay circuit, start-up and power flow reversal The current does not fluctuate at that time.

【0019】[0019]

【実施例】図1は本発明による一実施例の構成図、図2
は図1の電流基準値調整回路の一例を示すブロック図で
ある。図1、図2では図5と同じ機能を遂行する要素に
は同一符号を付し、その説明を省略する。
1 is a block diagram of an embodiment of the present invention, FIG.
FIG. 2 is a block diagram showing an example of a current reference value adjusting circuit of FIG. 1. In FIG. 1 and FIG. 2, elements that perform the same function as in FIG. 5 are assigned the same reference numerals and explanations thereof are omitted.

【0020】変換器制御回路100Aは、定電圧制御回
路11A、直流電圧設定器14A、サミング回路17
A、定余裕角制御回路12A、余裕角設定器18A、定
電流制御回路13A、サミング回路23A、スイッチ2
4A、電流マ―ジン設定器25A、電流基準値調整回路
50A、制御進み角優先回路28A、とから構成してい
る。電流基準値調整回路50Aは、図2に示すように、
サミング回路51A、スイッチ回路52A、電流基準補
正値出力回路53Aとから構成している。
The converter control circuit 100A comprises a constant voltage control circuit 11A, a DC voltage setting device 14A, and a summing circuit 17.
A, constant margin angle control circuit 12A, margin angle setter 18A, constant current control circuit 13A, summing circuit 23A, switch 2
4A, a current margin setting device 25A, a current reference value adjusting circuit 50A, and a control advance angle priority circuit 28A. The current reference value adjustment circuit 50A, as shown in FIG.
It is composed of a summing circuit 51A, a switch circuit 52A, and a current reference correction value output circuit 53A.

【0021】定常状態では、スイッチ回路52Aが開と
なっており、電流基準値出力回路27の出力が伝送制御
回路26Aを介して電流基準値調整回路50Aへ入力さ
れそのまま定電流制御回路13Aへ入力される。変換器
運転での起動時または変換器運転から逆変換器運転への
潮流反転時にはある一定期間スイッチ回路52Aは閉と
なる。電流基準値出力回路27の出力が伝送制御回路2
6Aを介して電流基準値調整回路50Aへ入力され、サ
ミング回路51Aで電流基準補正値出力回路53Aから
の位相進み方向の電流基準補正値が加算される。その出
力が定電流制御回路13Aへ入力される。定余裕角制御
回路12A、定電圧制御回路11A、制御進み角優先回
路28Aの作用は、従来例と同様のため説明は省略す
る。
In the steady state, the switch circuit 52A is open, and the output of the current reference value output circuit 27 is input to the current reference value adjusting circuit 50A via the transmission control circuit 26A and directly input to the constant current control circuit 13A. To be done. The switch circuit 52A is closed for a certain period of time at the time of startup in the converter operation or at the time of power flow reversal from the converter operation to the inverse converter operation. The output of the current reference value output circuit 27 is the transmission control circuit 2
It is input to the current reference value adjusting circuit 50A via 6A, and the summing circuit 51A adds the current reference correction value in the phase advance direction from the current reference correction value output circuit 53A. The output is input to the constant current control circuit 13A. The operations of the constant margin angle control circuit 12A, the constant voltage control circuit 11A, and the control advance angle priority circuit 28A are the same as those of the conventional example, and thus the description thereof will be omitted.

【0022】以上説明したように、前述実施例によれ
ば、変換器運転で起動するときまたは逆変換器運転から
変換器運転への潮流反転のときにある一定時間電流基準
に任意の直流電流基準補正値を加算し、定電流制御回路
13Aへの入力値を大きくし積分時間を速くすることに
より、起動もしくは潮流反転時の時間遅延により系統及
び機器へ悪影響を与えることを防ぐことができる。
As described above, according to the above-described embodiment, an arbitrary DC current reference is used as the current reference for a certain period of time when starting in the converter operation or when the power flow is reversed from the inverse converter operation to the converter operation. By adding the correction value, increasing the input value to the constant current control circuit 13A and shortening the integration time, it is possible to prevent the system and the equipment from being adversely affected by the time delay at the time of start-up or power flow inversion.

【0023】図3は本発明の他の実施例を示す電流基準
値調整回路50Aのブロック図である。電流基準値調整
回路50Aは、直流電流基準補正値出力回路53Aの出
力を交直変換装置の運転状態により入り切りするスイッ
チ回路52Aと、直流電流基準補正値出力回路55Aの
出力を交直変換装置の運転状態により入り切りするスイ
ッチ回路54Aと、スイッチ回路52A及び54Aの出
力と、伝送制御回路26Aの出力である電流基準値とを
加算するサミング回路51Aとから構成している。
FIG. 3 is a block diagram of a current reference value adjusting circuit 50A showing another embodiment of the present invention. The current reference value adjusting circuit 50A switches the output of the DC current reference correction value output circuit 53A to ON / OFF depending on the operating state of the AC / DC converter and the output of the DC current reference correction value output circuit 55A to the operating state of the AC / DC converter. And a summing circuit 51A that adds the outputs of the switch circuits 52A and 54A and the current reference value that is the output of the transmission control circuit 26A.

【0024】次に、前述のように構成された本発明の他
の実施例の動作を説明する。定常状態では、スイッチ回
路52A,54Aが開となっており、電流基準値出力回
路27の出力が伝送制御回路26Aを介して電流基準値
調整回路50Aへ入力されそのまま定電流制御回路13
Aへ入力される。変換器運転での起動時または変換器運
転から逆変換器運転への潮流反転時には、スイッチ回路
54Aは開、スイッチ回路52Aはある一定期間閉とな
る。電流基準値出力回路27の出力が伝送制御回路26
Aを介して電流基準値調整回路50Aへ入力され、サミ
ング回路51Aで電流基準補正値出力回路53Aからの
位相進み方向の電流基準補正値が加算され、その出力が
定電流制御回路13Aへ入力される。
Next, the operation of another embodiment of the present invention constructed as described above will be described. In the steady state, the switch circuits 52A and 54A are open, the output of the current reference value output circuit 27 is input to the current reference value adjusting circuit 50A via the transmission control circuit 26A, and the constant current control circuit 13 as it is.
Input to A. The switch circuit 54A is open and the switch circuit 52A is closed for a certain period of time at the time of startup in the converter operation or at the time of power flow reversal from the converter operation to the inverse converter operation. The output of the current reference value output circuit 27 is the transmission control circuit 26.
It is input to the current reference value adjustment circuit 50A via A, the current reference correction value in the phase lead direction from the current reference correction value output circuit 53A is added in the summing circuit 51A, and the output is input to the constant current control circuit 13A. It

【0025】又、逆変換器運転での起動または逆変換器
運転から変換器運転への潮流反転時には、スイッチ回路
52Aは開、スイッチ回路54Aはある一定期間閉とな
る。電流基準値出力回路27の出力が伝送制御回路26
を介して電流基準値調整回路50Aへ入力され、サミン
グ回路51Aで電流基準補正値出力回路55Aからの位
相遅れ方向の電流基準補正値が加算され、その出力が定
電流制御回路13Aへ入力される。
Further, the switch circuit 52A is opened and the switch circuit 54A is closed for a certain period of time at the start-up in the reverse converter operation or at the time of power reversal from the reverse converter operation to the converter operation. The output of the current reference value output circuit 27 is the transmission control circuit 26.
Is input to the current reference value adjustment circuit 50A, the summing circuit 51A adds the current reference correction value in the phase delay direction from the current reference correction value output circuit 55A, and the output is input to the constant current control circuit 13A. .

【0026】以上説明したように、本発明の他の実施例
によれば、起動時または潮流反転の動作時に、変換器運
転でも逆変換器運転でも、定電流制御回路13Aへの入
力値を大きくし積分回路の積算時間を速くすることがで
き、起動もしくは潮流反転時の時間遅延により系統及び
機器へ悪影響を与えることを防ぐことができる。
As described above, according to another embodiment of the present invention, the input value to the constant current control circuit 13A is increased at the time of start-up or power flow reversal operation, whether in converter operation or inverse converter operation. However, the integration time of the integration circuit can be shortened, and it is possible to prevent the system and the equipment from being adversely affected by the time delay at the time of start-up or power flow reversal.

【0027】図4は本発明の更に他の実施例を示す電流
基準値調整回路50Aのブロック図である。電流基準値
調整回路50Aは、直流電流基準補正値出力回路53A
の出力を交直変換装置の運転状態により入り切りするス
イッチ回路52Aと、直流電流基準補正値出力回路55
Aの出力を交直変換装置の運転状態により入り切りする
スイッチ回路54Aと、スイッチ回路52A及び54A
の出力を一次遅れ回路58Aを介して得らる信号と、伝
送制御回路26Aの出力である電流基準値とを加算する
サミング回路51Aとから構成している。
FIG. 4 is a block diagram of a current reference value adjusting circuit 50A showing still another embodiment of the present invention. The current reference value adjusting circuit 50A includes a DC current reference correction value output circuit 53A.
Circuit 52A for turning on and off the output of the DC / DC converter according to the operating state of the AC / DC converter, and a DC current reference correction value output circuit 55
A switch circuit 54A for turning on and off the output of A depending on the operating state of the AC / DC converter, and switch circuits 52A and 54A.
The summing circuit 51A for adding the signal obtained through the first-order delay circuit 58A and the current reference value which is the output of the transmission control circuit 26A.

【0028】次に、前述のように構成された本発明の更
に他の実施例の動作を説明する。定常状態では、スイッ
チ回路52A,54Aが開となっており、電流基準値出
力回路27の出力が伝送制御回路26Aを介して電流基
準値調整回路50Aへ入力されそのまま定電流制御回路
13Aへ入力される。変換器運転での起動時または変換
器運転から逆変換器運転への潮流反転時には、スイッチ
回路54Aは開、スイッチ回路52Aはある一定期間閉
となる。電流基準値出力回路27の出力が伝送制御回路
26Aを介して電流基準値調整回路50Aへ入力され、
サミング回路51Aで一次遅れ回路58Aを介した電流
基準補正値出力回路53Aからの位相進み方向の電流基
準補正値が加算され、その出力が定電流制御回路へ入力
される。スイッチ回路52Aを閉じた時の一次遅れ回路
58Aの出力は、零からある時定数で電流基準補正値へ
と変化する。スイッチ回路52Aを開いた時の一次遅れ
回路58Aの出力は、電流基準補正値からある時定数で
零へと変化する。
Next, the operation of still another embodiment of the present invention constructed as described above will be described. In the steady state, the switch circuits 52A and 54A are open, and the output of the current reference value output circuit 27 is input to the current reference value adjusting circuit 50A via the transmission control circuit 26A and input to the constant current control circuit 13A as it is. It The switch circuit 54A is open and the switch circuit 52A is closed for a certain period of time at the time of startup in the converter operation or at the time of power flow reversal from the converter operation to the inverse converter operation. The output of the current reference value output circuit 27 is input to the current reference value adjusting circuit 50A via the transmission control circuit 26A,
In the summing circuit 51A, the current reference correction value in the phase advance direction from the current reference correction value output circuit 53A via the primary delay circuit 58A is added, and the output is input to the constant current control circuit. The output of the primary delay circuit 58A when the switch circuit 52A is closed changes from zero to a current reference correction value with a certain time constant. The output of the first-order delay circuit 58A when the switch circuit 52A is opened changes from the current reference correction value to zero with a certain time constant.

【0029】又、逆変換器運転での起動または逆変換器
運転から変換器運転への潮流反転時には、スイッチ回路
52Aは開、スイッチ回路54Aはある一定期間閉とな
る。電流基準値出力回路27の出力が伝送制御回路26
を介して電流基準値調整回路50Aへ入力され、サミン
グ回路51Aで一次遅れ回路58Aを介した電流基準補
正値出力回路55Aからの位相遅れ方向の電流基準補正
値が加算され、その出力が定電流制御回路13Aへ入力
される。スイッチ回路54Aを閉じた時の一次遅れ回路
58Aの出力は、零からある時定数で電流基準補正値へ
と変化する。スイッチ回路54Aを開いた時の一次遅れ
回路58Aの出力は、電流基準補正値からある時定数で
零へと変化する。
Further, at the time of start-up in the reverse converter operation or when the power flow is reversed from the reverse converter operation to the converter operation, the switch circuit 52A is opened and the switch circuit 54A is closed for a certain period. The output of the current reference value output circuit 27 is the transmission control circuit 26.
Is input to the current reference value adjusting circuit 50A via the summing circuit 51A, the current reference correction value in the phase delay direction from the current reference correction value output circuit 55A via the primary delay circuit 58A is added in the summing circuit 51A, and the output is a constant current. It is input to the control circuit 13A. The output of the primary delay circuit 58A when the switch circuit 54A is closed changes from zero to a current reference correction value with a certain time constant. The output of the primary delay circuit 58A when the switch circuit 54A is opened changes from the current reference correction value to zero with a certain time constant.

【0030】以上説明したように、本発明の更に他の実
施例によれば、電流基準補正値出力回路53A及び55
Aの出力を一次遅れ回路58Aを介してサミング回路5
1Aに加えているため、電流基準値が滑らかに変化し電
流動揺が発生することなく、系統及び機器へ悪影響を与
えることを防ぐことができる。
As described above, according to another embodiment of the present invention, the current reference correction value output circuits 53A and 55 are provided.
The output of A is passed through the primary delay circuit 58A to the summing circuit 5
Since it is added to 1 A, the current reference value changes smoothly and the current fluctuation does not occur, and it is possible to prevent the system and the device from being adversely affected.

【0031】[0031]

【発明の効果】以上説明のように請求項1の発明によれ
ば、変換器運転で起動するときまたは逆変換器運転から
変換器運転への潮流反転のときに、ある一定時間電流基
準に任意の直流電流基準補正値を加算し、定電流制御回
路への入力値を大きくし積分回路の積分時間を速くする
ことができ、起動もしくは潮流反転時の時間遅延により
系統及び機器へ悪影響を与えることを防ぐことができ
る。
As described above, according to the first aspect of the present invention, the current reference is arbitrarily set for a certain period of time when starting in the converter operation or when reversing the power flow from the inverse converter operation to the converter operation. DC current reference correction value can be added to increase the input value to the constant current control circuit to speed up the integration time of the integrator circuit, which may adversely affect the system and equipment due to the time delay at startup or power flow reversal. Can be prevented.

【0032】又、請求項2の発明によれば、変換器運転
で起動するとき又は、逆変換器運転から変換器運転への
潮流反転のときに加え更に逆変換器運転で起動するとき
又は、変換器運転から逆変換器運転への潮流反転の時に
も、ある一定時間電流基準に任意の直流電流基準補正値
を加算し、定電流制御回路への入力値を大きくし積分回
路の積分時間を速くすることができ、起動もしくは潮流
反転時の時間遅延により系統及び機器へ悪影響を与える
ことを防ぐことができる。
According to the second aspect of the present invention, when the engine is started by the converter operation, or when the power flow is reversed from the inverse converter operation to the converter operation, the operation is further started by the inverse converter operation, or Even when reversing the flow from converter operation to inverse converter operation, add an arbitrary DC current reference correction value to the current reference for a certain period of time, increase the input value to the constant current control circuit, and increase the integration time of the integration circuit. It can be speeded up, and it is possible to prevent the system and equipment from being adversely affected by the time delay at the time of start-up or power flow reversal.

【0033】更に、請求項3の発明によれば、請求項2
の発明の効果に加え、交直変換装置の起動時又は潮流反
転時に電流基準値が滑らかに変化させることができ、電
流が動揺することなく、系統及び機器へ悪影響を与える
ことを防ぐことができる。
Further, according to the invention of claim 3, claim 2
In addition to the effect of the invention described above, the current reference value can be changed smoothly when the AC-DC converter is started or when the power flow is reversed, and it is possible to prevent the current and the equipment from being adversely affected without causing the current to fluctuate.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による交直変換装置の制御装置のブロッ
ク図。
FIG. 1 is a block diagram of a control device for an AC / DC converter according to the present invention.

【図2】本発明の一実施例を示す[図1]の電流基準値
調整回路の構成図。
FIG. 2 is a configuration diagram of a current reference value adjusting circuit of FIG. 1 showing an embodiment of the present invention.

【図3】本発明の他の実施例を示す[図1]の電流基準
値調整回路の構成図。
FIG. 3 is a configuration diagram of a current reference value adjusting circuit of FIG. 1 showing another embodiment of the present invention.

【図4】本発明の更に他の実施例を示す[図1]の電流
基準値調整回路の構成図。
FIG. 4 is a configuration diagram of a current reference value adjusting circuit of FIG. 1 showing still another embodiment of the present invention.

【図5】従来の交直変換装置の制御装置の構成図。FIG. 5 is a configuration diagram of a control device of a conventional AC / DC converter.

【図6】[図5]の交直変換装置の運転状態を説明する
ための電流―電圧特性図。
FIG. 6 is a current-voltage characteristic diagram for explaining an operating state of the AC / DC converter of FIG.

【符号の説明】[Explanation of symbols]

1A,1B …変換器 2A,2B
…直流リアクトル 3 …直流送電線路 4A,4B
…変換器用変圧器 5A,5B …しゃ断器 6A,6B
…交流系統 11A ,11B …定電圧制御回路 12A ,12B
…定余裕角制御回路 13A ,13B …定電流制御回路 14A ,14B
…直流電圧設定器器 15A ,15B …直流電圧検出器 16A ,16B
…電圧/電圧変換回路 17A ,17B …サミング回路 18A ,18B
…余裕角設定器 19 …通信回線 21A ,21B
…直流電流検出器 22A ,22B …電流/電圧変換回路 23A ,23B
…サミング回路 24A ,24B …スイッチ 25A ,25B
…電流マ―ジン設定器 26A ,26B …伝送制御回路 27
…電流基準値出力回路 28A ,28B …制御進み角優先回路 29A ,29B
…位相制御回路 30A ,30B …パルス増幅回路 50A
…電流基準調整回路 51A …サミング回路 52A ,54A
…スイッチ回路 53A ,55A …電流基準補正値出力回路 58A
…一次遅れ回路 100 …変換器制御回路
1A, 1B… Converter 2A, 2B
… DC reactor 3… DC transmission lines 4A, 4B
… Transformers for transformers 5A, 5B… Breakers 6A, 6B
… AC system 11A, 11B… Constant voltage control circuit 12A, 12B
… Constant margin angle control circuit 13A, 13B… Constant current control circuit 14A, 14B
… DC voltage setting device 15A, 15B… DC voltage detector 16A, 16B
… Voltage / voltage conversion circuits 17A, 17B… Summing circuits 18A, 18B
… Margin angle setting device 19… Communication lines 21A, 21B
… DC current detector 22A, 22B… Current / voltage conversion circuit 23A, 23B
… Summing circuit 24A, 24B… Switch 25A, 25B
… Current margin setting devices 26A, 26B… Transmission control circuit 27
… Current reference value output circuit 28A, 28B… Control advance angle priority circuit 29A, 29B
… Phase control circuit 30A, 30B… Pulse amplification circuit 50A
… Current reference adjusting circuit 51A… Summing circuit 52A, 54A
… Switch circuit 53A, 55A… Current reference correction value output circuit 58A
… Primary delay circuit 100… Converter control circuit

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 直流側が共通接続され、交流側がそ
れぞれ異る交流系統に接続される交直変換装置の直流電
圧を直流電圧基準値に追従させるように制御する定電圧
制御回路と、前記交直変換装置の余裕角を一定に制御す
る定余裕角制御回路と、前記交直変換装置の直流電流を
直流電流基準値に追従させるように制御する定電流制御
回路と、前記それぞれの制御回路の出力値である制御角
度の進み優先をとる制御進み角優先回路を備えた交直変
換装置の制御装置において、前記定電流制御回路の入力
側に、直流電流基準補正値出力回路と、該回路の出力を
前記交直変換装置の運転状態により入り切りするスイッ
チ回路と、該スイッチ回路の出力と前記直流電流基準値
を加算するサミング回路とから成る電流基準値調整回路
を設けたことを特徴とした交直変換装置の制御装置。
1. A constant voltage control circuit for controlling a DC voltage of an AC / DC converter connected commonly to the DC side and connected to different AC systems on the AC side so as to follow a DC voltage reference value, and the AC / DC converter. A constant margin angle control circuit for controlling the margin angle of the constant, a constant current control circuit for controlling the direct current of the AC / DC converter so as to follow the DC current reference value, and output values of the respective control circuits. In a controller of an AC / DC converter having a control advance angle priority circuit that gives priority to the advance of a control angle, a DC current reference correction value output circuit and an output of the AC / DC conversion unit are provided on the input side of the constant current control circuit. A current reference value adjusting circuit including a switch circuit that turns on and off depending on an operating state of the device, and a summing circuit that adds the output of the switch circuit and the DC current reference value is provided. Control device for AC / DC converter.
【請求項2】 前記直流電流基準補正値出力回路
と、該回路の出力を前記交直変換装置の運転状態により
入り切りするスイッチ回路を少くとも2組設けたことを
特徴とする請求項1の交直変換装置の制御装置。
2. The DC / DC converter according to claim 1, wherein at least two sets of the DC current reference correction value output circuit and a switch circuit for turning on / off the output of the DC / DC converter according to the operating state of the AC / DC converter are provided. The control device of the device.
【請求項3】 前記スイッチ回路の出力を一次遅
れ回路を介して前記サミング回路へ入力することを特徴
とする請求項1或いは請求項2の交直変換装置の制御装
置。
3. The control device for an AC / DC converter according to claim 1, wherein the output of the switch circuit is input to the summing circuit via a first-order delay circuit.
JP5053621A 1993-03-15 1993-03-15 Controller for ac-dc converter Pending JPH06276745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5053621A JPH06276745A (en) 1993-03-15 1993-03-15 Controller for ac-dc converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5053621A JPH06276745A (en) 1993-03-15 1993-03-15 Controller for ac-dc converter

Publications (1)

Publication Number Publication Date
JPH06276745A true JPH06276745A (en) 1994-09-30

Family

ID=12947984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5053621A Pending JPH06276745A (en) 1993-03-15 1993-03-15 Controller for ac-dc converter

Country Status (1)

Country Link
JP (1) JPH06276745A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015194325A1 (en) * 2014-06-17 2015-12-23 株式会社 東芝 Power converter control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015194325A1 (en) * 2014-06-17 2015-12-23 株式会社 東芝 Power converter control device

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