JP3254791B2 - Power interchange control system between systems - Google Patents
Power interchange control system between systemsInfo
- Publication number
- JP3254791B2 JP3254791B2 JP04478993A JP4478993A JP3254791B2 JP 3254791 B2 JP3254791 B2 JP 3254791B2 JP 04478993 A JP04478993 A JP 04478993A JP 4478993 A JP4478993 A JP 4478993A JP 3254791 B2 JP3254791 B2 JP 3254791B2
- Authority
- JP
- Japan
- Prior art keywords
- power
- converter
- voltage
- control
- active power
- 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.)
- Expired - Fee Related
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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Description
【０００１】[0001]
【産業上の利用分野】本発明は、５０ＨZ，６０ＨZ電力
系統間の電力融通を行う系統間電力融通制御装置に関す
るものである。The present invention relates to relates to 50H Z, inter-system power interchange controller for power interchange between 60H Z power system.
【０００２】[0002]
【従来の技術】従来、系統間電力融通制御装置は図４に
示すように、電流形インバータ２１、及び２２を直流リ
アクトルＬを共通にして交流側を系統Ａ及びＢに接続
し、インバータ２１及び２２を制御して系統間の電力融
通を行っている。Conventionally, the inter-system power interchange control device as shown in FIG. 4, to connect the AC side to a current source inverter 21, and 22 to a common DC reactor L to the system A and B, inverters 21 and 22 is controlled to exchange power between systems.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の電
力融通装置は、サイリスタを使用した電流形インバータ
による他励方式となっているため、次のような欠点があ
る。However, the above-mentioned conventional power interchange device is of a separately-excited type using a current-source inverter using a thyristor, and therefore has the following disadvantages.
【０００４】（１）有効電力の融通はできるが、無効電
力の補償制御ができない。このため力率調整装置を必要
とする。(1) Although active power can be accommodated, reactive power compensation control cannot be performed. Therefore, a power factor adjusting device is required.
【０００５】（２）サイリスタの点弧遅れで遅れの無効
電力が発生する。(2) Delayed reactive power is generated due to the ignition delay of the thyristor.
【０００６】（３）電力の流れを逆にする場合、インバ
ータが電流形のため直流リアクトルの電流方向が急に変
化できないため制御速度が遅い。(3) When the flow of power is reversed, the control speed is slow because the current direction of the DC reactor cannot be changed suddenly because the inverter is a current type.
【０００７】本発明は、従来のこのような問題点を解決
すべくなされたものであり、その目的とするところは、
高速な制御ができ、かつ、有効電力の融通と無効電力の
補償が同時にできる系統間の電力融通制御装置を提供す
ることにある。[0007] The present invention has been made to solve such a conventional problem.
It is an object of the present invention to provide an inter-system power interchange control device that can perform high-speed control and can simultaneously exchange active power and compensate for reactive power.
【０００８】[0008]
【課題を解決するための手段】第１の発明は、夫々リア
クトル、変圧器、インバータで構成された第１、第２の
変換装置の直流側を共通に接続したＡＣ−ＤＣ−ＡＣ変
換装置を第１、第２の系統間に接続して系統間の電力を
融通する系統間電力融通システムにおいて、前記変換装
置の直流電圧を検出する直流電圧変換器と、第１、第２
の系統の負荷有効電力、負荷無効電力及び第１、第２の
変換装置が出力する有効電力、無効電力を検出する電力
検出回路と、直流電圧変換器出検出した直流電圧、電力
検出回路で検出した各電力を用いて第１、第２の変換装
置を制御する制御回路を有し、前記第１の変換装置の制
御回路は、直流電圧設定値と第１の変換装置の出力する
有効電力との偏差を増幅し第１の変換装置を周波数制御
して直流電圧を一定にする周波数制御系と、第１の変換
の出力する無効電力と第１系統の無効電力との 偏差を増
幅し第１の変換装置を電圧制御して第１系統の無効電力
を制御する電圧制御系を有し、前記第２インバータ装置
の制御回路は、融通する有効電力設定値の正又は負信号
と第２の変換装置の出力する有効電力の負又は正の信号
との偏差を増幅し第２の変換装置を周波数制御して第２
の系統の有効電力を制御する周波数制御系と、第２の変
換装置の出力する無効電力と第２の系統の無効電力との
偏差を増幅し第２の変換装置を電圧制御して第２の系統
の無効電力を制御する電圧制御系を有することを特徴と
する。Means for Solving the Problems A first aspect of the present invention provides a
First, second,
AC-DC-AC converter with the DC side of the converter connected in common
Switching device connected between the first and second systems to
In the interchangeable power interchange system, the converter
DC voltage converter for detecting the DC voltage of the
Load active power, load reactive power and the first and second
Power for detecting active power and reactive power output from the converter
Detection circuit, DC voltage and power detected by DC voltage converter
The first and second conversion devices use the respective powers detected by the detection circuit.
A control circuit for controlling the position of the first converter.
The control circuit outputs the DC voltage set value and the output of the first converter.
Amplifies deviation from active power and frequency controls first converter
Frequency control system to make the DC voltage constant and the first conversion
The deviation between the reactive power output from the
Reactive power of the first system by controlling the voltage of the first converter
The second inverter device having a voltage control system for controlling
The control circuit of the interchangeable active power set value positive or negative signal
And the negative or positive signal of the active power output from the second converter
And the frequency of the second converter is controlled to obtain the second
A frequency control system for controlling the active power of the
Between the reactive power output from the switching device and the reactive power of the second system.
Amplifying the deviation and controlling the voltage of the second converter, the second system
Characterized by having a voltage control system for controlling the reactive power of
I do .
【０００９】第２の発明は、夫々リアクトル、変圧器、
インバータで構成された第１、第２の変換装置の直流側
を共通に接続したＡＣ−ＤＣ−ＡＣ変換装置を第１、第
２の系統間に接続して系統間の電力を融通する系統間電
力融通システムにおいて、前記変換装置の直流電圧を検
出する直流電圧変換器と、第１、第２の系統の負荷有効
電力、負荷無効電力及び第１、第２の変換装置が出力す
る有効電力、無効電力を検出する電力検出回路と、直流
電圧変換器出検出した直流電圧、電力検出回路で検出し
た各電力を用いて第１、第２の変換装置を制御する制御
回路を有し、 前記第１の変換装置の制御回路は、第１の
変換装置の出力する無効電力と第１系統の無効電力との
偏差を増幅し第１の変換装置を電圧制御して第１系統の
無効電力を制御する電圧制御系と、直流電圧の設定値と
検出値との偏差を増幅する直流電圧一定制御系と、この
直流電圧一定制御系の出力と融通する有効電力設定の正
又は負の信号と第１の変換装置の有効電力との偏差を増
幅し第１の変換装置を周波数制御して第１の系統の有効
電力を制御する周波数制御系とを有し、前記第２の変換
装置の制御回路は、第２系統の無効電力と第２の変換装
置の無効電力の偏差を増幅し第２の変換装置を電圧制御
して第２の系統の無効電流を制御する電圧制御系と、前
記直流電圧一定制御系の出力と融通する有効電力設定の
負又は正の信号と第２の変換装置の有効電力との偏差を
増幅し第２の変換装置を周波数制御し第２の系統の有効
電力を制御する周波数制御系とを有することを特徴とす
る。 The second invention is a reactor, a transformer,
DC side of first and second converters composed of inverters
The first and second AC-DC-AC converters are connected in common.
Inter-system power that is connected between two systems to exchange power between systems
In the power interchange system, the DC voltage of the converter is detected.
Output DC voltage converter and effective load of the first and second systems
Power, load reactive power and the output of the first and second converters.
Power detection circuit for detecting active power and reactive power
DC voltage detected by the voltage converter, detected by the power detection circuit
For controlling the first and second converters using the respective electric powers
It has a circuit, control circuit of the first conversion device, a first
Between the reactive power output from the converter and the reactive power of the first system
By amplifying the deviation and controlling the voltage of the first converter,
Voltage control system to control reactive power, DC voltage setting value
A constant DC voltage control system that amplifies the deviation from the detected value,
Check that the active power setting is compatible with the output of the DC voltage constant control system.
Or increasing the deviation between the negative signal and the active power of the first converter.
Width and frequency control of the first conversion device to enable the first system
A frequency control system for controlling power, wherein the second conversion
The control circuit of the device includes the reactive power of the second system and the second conversion device.
Amplifies the deviation of the reactive power of the unit and controls the voltage of the second converter.
A voltage control system for controlling the reactive current of the second system by
Of the active power setting compatible with the output of the DC voltage constant control system.
The deviation between the negative or positive signal and the active power of the second converter
Amplify and frequency control the second converter to enable the second system
And a frequency control system for controlling electric power.
You .
【００１０】第３の発明は、第１又は第２の発明におい
て、 第２の変換装置の有効電力設定を第１、第２系統
の各有効電力の差の５０％に設定し等配分の有効電力制
御することを特徴とする。 [0010] In a third aspect based on the first or second aspect, the active power of the second converter is set in the first and second systems.
Active power system with 50% of the difference between each active power
It is characterized by controlling.
【００１１】[0011]
【作用】第１の発明では、第１の変換装置の制御回路
は、直流電圧設定値と第１の変換装置の出力する有効電
力との偏差を増幅し第１の変換装置を周波数制御して直
流電圧を一定にすると共に、第１の変換の出力する無効
電力と第１系統の無効電力との偏差を増幅し第１の変換
装置を電圧制御して第１系統の無効電力を制御する。第
２インバータ装置の制御回路は、融通する有効電力設定
値の正又は負信号と第２の変換装置の出力する有効電力
の負又は正の信号との偏差を増幅し第２の変換装置を周
波数制御して第２の系統の有効電力を制御すると共に、
第２の変換装置の出力する無効電力と第２の系統の無効
電力との偏差を増幅し第２の変換装置を電圧制御して第
２の系統の無効電力を制御する。この第１、第２の変換
装置の制御により第１、第２系等間の有効電力の融通が
なされると共に、無効電力の補償制御がなされる。 According to the first invention, the control circuit of the first converter is provided.
Is the DC voltage setting value and the effective voltage output from the first converter.
By amplifying the deviation from the force and controlling the frequency of the first converter,
Invalidates the output of the first conversion while keeping the current voltage constant.
Amplifies the deviation between the power and the reactive power of the first system and performs the first conversion.
The voltage of the device is controlled to control the first system reactive power. No.
(2) The control circuit of the inverter device has a flexible active power setting
Value positive or negative signal and active power output by the second converter
Amplifies the deviation from the negative or positive signal of the
While controlling the active power of the second system by controlling the wave number,
Reactive power output from the second converter and reactive power of the second system
The deviation from the power is amplified and the voltage of the second converter is controlled to
The reactive power of the second system is controlled . This first and second conversion
Through the control of the device, the exchange of active power between the first and second
At the same time, compensation control of the reactive power is performed.
【００１２】第２の発明では、第１の変換装置の制御回
路は、第１の変換装置の出力する無効電力と第１系統の
無効電力との偏差を増幅し第１の変換装置を電圧制御し
て第１系統の無効電力を制御すると共に、直流電圧の設
定値と検出値との偏差を増幅する直流電圧一定制御系
と、この直流電圧一定制御系の出力と融通する有効電力
設定の正又は負の信号と第１の変換装置の有効電力との
偏差を増幅し第１の変換装置を周波数制御して第１の系
統の有効電力を制御する。第２の変換装置の制御回路
は、第２系統の無効電力と第２の変換装置の無効電力の
偏差を増幅し第２の変換装置を電圧制御して第２の系統
の無効電流を制御すると共に、前記直流電圧一定制御系
の出力と融通する有効電力設定の負又は正の信号と第２
の変換装置の有効電力との偏差を増幅し第２の変換装置
を周波数制御し第２の系統の有効電力を制御する。この
第１、第２の変換装置の制御により第１、第２系等間の
有効電 力の融通がなされると共に、無効電力の補償制御
がなされる。 In the second invention, the control circuit of the first converter is controlled.
The path is connected to the reactive power output from the first converter and the first system.
Amplifies the deviation from the reactive power and voltage controls the first converter.
Control the reactive power of the first system and set the DC voltage.
DC voltage constant control system that amplifies the deviation between the constant value and the detected value
And the active power compatible with the output of this DC voltage constant control system
Between the positive or negative signal of the setting and the active power of the first converter.
Amplifying the deviation and controlling the frequency of the first converter, the first system
Control the active power of the grid. Control circuit of second converter
Is the reactive power of the second system and the reactive power of the second converter.
Amplifying the deviation and controlling the voltage of the second converter, the second system
And the DC voltage constant control system.
The negative or positive signal of the active power setting and the second
Amplifying the deviation from the active power of the second converter
To control the active power of the second system. this
By controlling the first and second converters, the first and second systems can be controlled.
With interchange active power is made, the compensation control of the reactive power
Is made.
【００１３】第３の発明は、第１又は第２の発明におい
て、第２の変換装置の有効電力設定を第１、第２系統の
各有効電力の差の５０％に設定しているので、等配分の
有効電力制御ができる。 [0013] In a third aspect based on the first or second aspect, the active power setting of the second converter is set in the first and second systems.
Since it is set to 50% of the difference between each active power,
Active power control is possible.
【００１４】[0014]
【００１５】[0015]
【実施例】本発明の実施例を図面を参照して説明する。An embodiment of the present invention will be described with reference to the drawings.
【００１６】実施例１ 図１について、１Ａ，１Ｂは系統Ａ，Ｂに夫々リアクト
ルＬ、変圧器ＴＲを介して接続され直流側が互いに共通
に接続された電圧形インバータ、２ＡはＰＴ，ＣＴにて
検出した系統Ａの負荷電流の電圧、電流及びＣＴで検出
したインバータ１Ａの電流から系統Ａの負荷有効電力Ｐ
1L、無効電力Ｑ1L及びインバータ１Ａの出力有効電力Ｐ
1I、無効電力Ｑ1Iを検出する電力検出回路、２Ｂは同様
にして系統Ｂの有効電力Ｐ2L、無効電力Ｑ2L、インバー
タ２Ａの有効電力Ｐ2I、無効電力Ｑ2Iを検出する電力検
出回路。Embodiment 1 Referring to FIG. 1, reference numerals 1A and 1B denote voltage source inverters connected to systems A and B via a reactor L and a transformer TR, respectively, and the DC side is commonly connected to each other. From the detected voltage and current of the load current of the system A and the current of the inverter 1A detected by CT, the load active power P of the system A is calculated.
1L , reactive power Q 1L and output active power P of inverter 1A
1I, power detection circuit for detecting the reactive power Q 1I, active power P 2L lines B 2B in the same manner, the reactive power Q 2L, active power P 2I inverter 2A, power detection circuit for detecting the reactive power Q 2I.
【００１７】３はインバータ１Ａ，１Ｂの直流電圧を検
出し直流電圧Ｖ detを出力するＤＣ／ＤＣ変換器、４Ａ
はインバータ１Ａの制御部で、直流電圧設定ＶSetと出
力有効電力Ｐ1Iとの偏差を増幅する周波数制御系７Ａ
と、インバータ１Ａの出力無効電力Ｑ1Iと系統Ａの無効
電力Ｑ1Lとの偏差を増幅する電圧制御系８Ａと、周波数
制御系７Ａ及び電圧制御系８Ａの出力が入力する位相器
１０Ａと、位相器１０Ａの出力が入力しインバータ１Ａ
を制御するゲート制御回路１１Ａで構成されている。[0017] 3 inverters 1A, 1B DC / DC converter DC voltage to detect the output DC voltage V d et a, 4A
Is a control unit of the inverter 1A, and a frequency control system 7A for amplifying a deviation between the DC voltage setting VSet and the output active power P1I.
A voltage control system 8A for amplifying the difference between the output reactive power Q 1I of the inverter 1A and the reactive power Q 1L of the system A, and a phase shifter to which the outputs of the frequency control system 7A and the voltage control system 8A are input
10A and the output of the phase shifter 10A are input and the inverter 1A
Is controlled by a gate control circuit 11A.
【００１８】４Ｂはインバータ１Ｂの制御部で、融通す
る有効電力設定ＰSetと出力有効電力Ｐ2Iの偏差を増幅
する周波数制御系７Ｂと、出力無効電力Ｑ2Iと系統無効
電力Ｑ2Lとの偏差が入力する電圧制御系８Ｂと、周波数
制御系７Ｂ及び電圧制御系８Ｂの出力が入力する位相器
１０Ｂと、位相器１０Ｂの出力が入力しインバータ１Ｂ
を制御するゲート制御回路１１Ｂで構成されている。Reference numeral 4B denotes a control unit of the inverter 1B, which is a frequency control system 7B for amplifying the deviation between the active power setting P Set and the output active power P 2I , and the deviation between the output reactive power Q 2I and the system reactive power Q 2L. , A phase shifter 10B to which the outputs of the frequency control system 7B and the voltage control system 8B are input, and an inverter 1B to which the output of the phase shifter 10B is input.
Is controlled by a gate control circuit 11B.
【００１９】次に、上記実施例１の動作について説明す
る。インバータを系統に接続してインバータの周波数調
整すると有効電力制御ができ、インバータの電圧調整す
ると無効電力の制御ができることは公知である。Next, the operation of the first embodiment will be described. It is known that active power control can be performed by connecting an inverter to a system and adjusting the frequency of the inverter, and reactive power can be controlled by adjusting the voltage of the inverter.
【００２０】周波数制御系７Ａは直流電圧設定ＶSetと
インバータ１Ａの出力有効電力Ｐ 1I との偏差を増幅し、
位相器１０Ａ、ゲート制御回路１１Ａを介してインバー
タ１Ａの周波数を制御して直流電圧ＶDCを一定に制御す
る。The frequency control system 7A amplifies the deviation between the DC voltage setting V Set and the output active power P 1I of the inverter 1A,
The DC voltage VDC is controlled to be constant by controlling the frequency of the inverter 1A via the phase shifter 10A and the gate control circuit 11A.
【００２１】周波数制御系７Ｂは融通する有効電力設定
値ＰSetと出力有効電力Ｐ2Iとの偏差を増幅し、位相器
１０Ｂ、ゲート制御回路１１Ｂを介してインバータ１Ｂ
の出力有効力Ｐ2Iを設定値ＰSetに応じて任意に出力し
うるようにインバータ１Ｂの周波数を制御する。しかし
て、系統Ｂから系統Ａへ電力融通する場合は、インバー
タ１Ｂに有効電力Ｐ2Iが流れ込むように有効電力設定Ｐ
Setをマイナスに設定する。これによりインバータ１Ｂ
は系統Ｂから電力を受け直流電圧ＶDCを上昇させる。The frequency control system 7B amplifies the deviation between the available active power set value P Set and the output active power P 2I, and outputs the result via the phase shifter 10B and the gate control circuit 11B to the inverter 1B.
Controlling the frequency of the inverter 1B so as to be able to output arbitrarily according to the output effective power P 2I to the set value P Set. Thus, when the power is transferred from the system B to the system A, the active power setting P is set so that the active power P 2I flows into the inverter 1B.
Set Set to minus. Thereby, the inverter 1B
Receives power from the system B and increases the DC voltage VDC .
【００２２】一方、インバータ１Ａは直流電圧ＶDCが一
定制御されているので、インバータ１Ｂで受け取った電
力量を系統Ａに放電して直流電圧ＶDCが一定となるよう
に出力有効電力Ｐ1Lが制御される。これにより系統Ｂか
らＡへ設定されたとおりの電力が融通される。また、系
統Ａから系統Ｂへ電力融通する場合は、インバータ１Ｂ
から系統Ｂへ有効電力Ｐ2Iが流れ込むように有効電力設
定ＰSetを設定する。これによりインバータ１Ｂは周波
数制御されて系統Ｂに電力を放出する。このため直流電
圧ＶDCが低下し、これをインバータ１Ａで補う制御とな
り、系統Ａからインバータ１Ａに電力Ｐ2Iが供給され、
系統ＡからＢに設定された電力が融通される。On the other hand, since the DC voltage VDC of the inverter 1A is controlled to be constant, the output active power P 1L is discharged so that the electric energy received by the inverter 1B is discharged to the system A so that the DC voltage VDC becomes constant. Controlled. As a result, power as set from the system B to A is exchanged. When power is transferred from the system A to the system B, the inverter 1B
The active power setting P Set is set so that the active power P 2I flows from the system into the system B. Thus, the frequency of the inverter 1B is controlled, and the inverter 1B emits power to the system B. As a result, the DC voltage VDC decreases, and the inverter 1A makes up for the decrease. The power P 2I is supplied from the system A to the inverter 1A.
The power set in the systems A to B is exchanged.
【００２３】無効電力を補償は、直流電圧ＶDCが一定の
ためインバータ１Ａ，１Ｂの出力電圧の調整は電圧制御
系８Ａ，８Ｂの出力を位相器１０Ａ，１０Ｂに入力して
インバータ１Ａ，１Ｂの通流幅を調整し出力電圧を制御
して無効電力制御をする。To compensate for the reactive power, since the DC voltage VDC is constant, the output voltages of the inverters 1A and 1B are adjusted by inputting the outputs of the voltage control systems 8A and 8B to the phase shifters 10A and 10B, Reactive power control is performed by adjusting the conduction width and controlling the output voltage.
【００２４】なお、系統ＡとＢを等電力とする場合は、
インバータ１，１Ｂ間の電力を互いの系統電力Ｐ1L，Ｐ
2Lの差の５０％融通すればよいので、図２に示すよう
に、インバータ１Ｂの有効電力設定をＰSet＝（Ｐ1L−
Ｐ2L）／２にすれば自動的に等配分の有効電力制御を行
うことができる。When the systems A and B have the same power,
The power between the inverters 1 and 1B is divided into the system powers P 1L and P 1
Since it is sufficient to provide 50% of the difference of 2L , as shown in FIG. 2, the active power setting of the inverter 1B is set to P Set = (P 1L −
If P 2L ) / 2, active power control with equal distribution can be automatically performed.
【００２５】実施例２ 図３について、実施例１の図１に示したものと同一構成
部分は同一符号を符してその重複する説明を省略する。
６は直流電圧設定ＶSetと直流電圧Ｖ detとの偏差を増幅
する直流電圧一定制御系。Second Embodiment Referring to FIG. 3, the same components as those shown in FIG. 1 of the first embodiment are denoted by the same reference numerals, and a duplicate description thereof will be omitted.
6 is a DC voltage constant control system that amplifies a deviation between the DC voltage V d et a DC voltage setting V Set.
【００２６】７Ａ′は直流電圧一定制御系６の出力と、
融通する有効電力設定ＰSetを反転器９で反転させたマ
イナスの有効電力設定−ＰSetとインバータ１Ａの出力
有効電力Ｐ1Lとの偏差を増幅し位相器１０Ａに出力する
周波数制御系。7A 'is the output of the DC voltage constant control system 6,
A frequency control system that amplifies the deviation between the negative active power setting −P Set obtained by inverting the flexible active power setting P Set by the inverter 9 and the output active power P 1L of the inverter 1A, and outputs the result to the phase shifter 10A.
【００２７】７′Ｂは直流電圧一定制御系６の出力と、
プラスの有効電力設定+ＰSet及びインバータ１Ｂの出力
電力Ｐ2Iとの偏差を増幅し位相器１０Ｂに出力する周波
数制御系、その他の構成は図１のものと同じである。7'B is the output of the constant DC voltage control system 6,
The frequency control system that amplifies the difference between the positive active power setting + P Set and the output power P 2I of the inverter 1B and outputs the amplified power to the phase shifter 10B, and other configurations are the same as those in FIG.
【００２８】次に、実施例２の動作について説明する。
直流電圧設定Ｖsetと直流電圧Ｖ detとの偏差を増幅する
直流電圧一定制御系６の出力は周波数制御系７Ａ′，７
Ｂ′に入力しているので、２台のインバータ１Ａ，１Ｂ
は直流電圧ＶDCが一定になるように制御される。Next, the operation of the second embodiment will be described.
DC voltage setting V set and the DC voltage V d et a deviation output frequency control system 7A of the DC voltage constant control system 6 for amplifying a ', 7
B ', the two inverters 1A and 1B
Is controlled so that the DC voltage VDC becomes constant.
【００２９】さらに、周波数制御系７Ａ′は反転器９で
反転したマイナス有効電力設定−ＰSetとインバータ１
Ａの有効電力Ｐ1Lとの偏差を増幅して周波数制御し、ま
た、周波数制御系７Ｂ′は有効電力設定＋ＰSetとイン
バータ２Ｂの有効電力Ｐ 21 との偏差を増幅して周波数制
御をする。Further, the frequency control system 7A 'includes a negative active power setting -P Set inverted by the inverter 9 and the inverter 1
A controls the frequency by amplifying the deviation from the active power P 1L of A, and the frequency control system 7B 'amplifies the deviation between the active power setting + P Set and the active power P 21 of the inverter 2B to control the frequency.
【００３０】有効電力設定ＰSetのないときはインバー
タ１Ａ，１Ｂは直流定電圧制御で動作するので、直流電
圧ＶDCは一定になる。しかして、系統Ａから系統Ｂに電
力融通する場合は、設定器の有効電力設定ＰSetをプラ
スにする。これにより周波数制御系７Ａ′，７Ｂ′にマ
イナス設定、プラス設定がなされインバータ１Ａ，１Ｂ
が周波数制御されるので、インバータ１Ａは系統Ａより
電力を受け直流側に放出するように動作し、インバータ
１Ｂはこの電力を取り込んで系統Ｂに放出するように動
作し、電力が系統ＡからＢに融通される。また、系統Ｂ
から系統Ａに電力を融通する場合は、有効電力設定Ｐ
Setをマイナスに設定する。これにより周波数制御系７
Ａ′及び７Ｂ′に設定される有効電力設定は上記と逆に
プラス設定及びマイナス設定となるので、電力の流れ方
向が変わり系統Ｂから系統Ａに電力が融通される。な
お、無効電力制御及び両系統電力の等電力制御は実施例
１と同様にできる。When there is no active power setting PSet , the inverters 1A and 1B operate by DC constant voltage control, so that the DC voltage VDC becomes constant. Thus, when the power is exchanged from the system A to the system B, the active power setting P Set of the setting device is set to a positive value. As a result, the frequency control systems 7A 'and 7B' are set to minus and plus, and the inverters 1A and 1B are set.
Is frequency-controlled, the inverter 1A operates to receive power from the system A and discharge it to the DC side, and the inverter 1B operates to take in this power and discharge it to the system B. Be accommodated. In addition, system B
If you interchange power to system A from the active power set P
Set Set to minus. Thereby, the frequency control system 7
The active power settings for A 'and 7B' are positive and negative, opposite to the above, so that the flow direction of the power changes and the power is transferred from the system B to the system A. Note that the reactive power control and the equal power control of the power of both systems can be performed in the same manner as in the first embodiment.
【００３１】[0031]
【発明の効果】本発明は、上述のとおり構成されている
ので、次に記載する効果を奏する。Since the present invention is configured as described above, the following effects can be obtained.
【００３２】（１）電圧形インバータを使用しているの
で、大きな電流源がなく、高速な制御ができる。(1) Since a voltage type inverter is used, there is no large current source and high-speed control can be performed.
【００３３】（２）請求項１のものは、有効電力の融通
制御において、インバータの１台は直流電圧一定制御、
他の１台は出力の有効電力制御としているため、インバ
ータ間での干渉がなく安価に高速な制御ができる。ま
た、両方のインバータで無効電力の補償を行うことがで
きる。 (2) According to the first aspect, in the active power interchange control, one of the inverters is a DC voltage constant control,
Since the other unit is used for active power control of output, high-speed control can be performed at low cost without interference between inverters. Ma
In addition, both inverters can compensate for reactive power.
Wear.
【００３４】（３）請求項２のものは、直流電圧一定電
圧制御系の出力が両方のインバータの周波数制御系に共
通に入るため、融通する電力設定を零として１台のイン
バータが停止していても他方のインバータで無効電力の
補償を行うことができる。(3) According to the second aspect, since the output of the constant DC voltage control system enters the frequency control system of both inverters in common, the power setting to be interchanged is set to zero and one inverter is stopped. Even so, the other inverter can compensate for the reactive power.
【００３５】（４）また、請求項１，２のものは、有効
電力の融通と無効電力の補償が同時にできるので、力率
調整装置が不要となり装置が小型化され経済的である。(4 ) In the first and second aspects of the present invention, since the interchange of the active power and the compensation of the reactive power can be performed at the same time, the power factor adjusting device is not required, and the device is reduced in size and is economical.
【００３６】（５）請求項３のものは、自動的に等配分
の有効電力制御ができる。また、電気鉄道等で使用され
るスコットトランスの２次側に本装置を使用すると、ト
ランスのＴ座，Ｍ座の二次巻線は無効電力はなくまた等
電力となるため系統側の三相電力は平衡化できる。また
無効電力が流れないため電圧変動が抑制される。(5) According to the third aspect, the equal distribution is automatically performed.
Active power control. Also, if this device is used on the secondary side of a Scott transformer used in electric railways, etc., the secondary windings of the T and M seats of the transformer have no reactive power and have the same power. Power can be balanced. Further, voltage fluctuation is suppressed because no reactive power flows.
【図１】本発明の実施例１を示す回路図。FIG. 1 is a circuit diagram showing a first embodiment of the present invention.
【図２】実施例１における電力設定例の説明図。FIG. 2 is an explanatory diagram of a power setting example according to the first embodiment.
【図３】実施例２を示す回路図。FIG. 3 is a circuit diagram showing a second embodiment.
【図４】従来例を示す回路図。FIG. 4 is a circuit diagram showing a conventional example.
１Ａ，１Ｂ…インバータ ２Ａ，２Ｂ…電力無効電力検出回路 ３…ＤＣ／ＤＣ変換器 ４Ａ，４Ｂ，５Ａ，５Ｂ…インバータの制御部 ６…直流電圧一定制御系 ７Ａ，７Ａ′，７Ｂ，７Ｂ′…周波数制御系 ８Ａ，８Ａ′，８Ｂ，８Ｂ′…出力電圧制御系 １０Ａ，１０Ｂ…位相器 １１Ａ，１１Ｂ…ゲート制御回路 1A, 1B ... Inverter 2A, 2B ... Power reactive power detection circuit 3 ... DC / DC converter 4A, 4B, 5A, 5B ... Inverter control unit 6 ... DC voltage constant control system 7A, 7A ', 7B, 7B' ... Frequency control system 8A, 8A ', 8B, 8B' ... output voltage control system 10A, 10B ... phase shifter 11A, 11B ... gate control circuit
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02J 3/36 H02J 3/06 H02M 5/451 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02J 3/36 H02J 3/06 H02M 5/451
Claims (3)
成された第１、第２の変換装置の直流側を共通に接続し
たＡＣ−ＤＣ−ＡＣ変換装置を第１、第２の系統間に接
続して系統間の電力を融通する系統間電力融通システム
において、 前記変換装置の直流電圧を検出する直流電圧変換器と、
第１、第２の系統の負荷有効電力、負荷無効電力及び第
１、第２の変換装置が出力する有効電力、無効電力を検
出する電力検出回路と、直流電圧変換器出検出した直流
電圧、電力検出回路で検出した各電力を用いて第１、第
２の変換装置を制御する制御回路を有し、 前記第１の変換装置の制御回路は、 直流電圧設定値と第１の変換装置の出力する有効電力と
の偏差を増幅し第１の変換装置を周波数制御して直流電
圧を一定にする周波数制御系と、第１の変換の出力する
無効電力と第１系統の無効電力との偏差を増幅し第１の
変換装置を電圧制御して第１系統の無効電力を制御する
電圧制御系を有し、 前記第２インバータ装置の制御回路は、 融通する有効電力設定値の正又は負信号と第２の変換装
置の出力する有効電力の負又は正の信号との偏差を増幅
し第２の変換装置を周波数制御して第２の系統の有効電
力を制御する周波数制御系と、第２の変換装置の出力す
る無効電力と第２の系統の無効電力との偏差を増幅し第
２の変換装置を電圧制御して第２の系統の無効電力を制
御する電圧制御系を有することを特徴とする 系統間電力
融通制御装置。(1) A reactor, a transformer, and an inverter, respectively.
Connect the DC side of the first and second converters
AC-DC-AC converter is connected between the first and second systems.
An inter-system power interchange system that continuously exchanges power between systems
In, a DC voltage converter for detecting the DC voltage of the converter,
Load active power, load reactive power and
1. The active power and reactive power output from the second converter are detected.
Output power detection circuit and DC voltage converter
Using the voltage and each power detected by the power detection circuit,
A control circuit for controlling the second converter, wherein the control circuit for the first converter includes a DC voltage set value and an active power output from the first converter.
And the frequency of the first converter is controlled to increase the DC power.
A frequency control system for keeping the pressure constant and outputting the first conversion
The difference between the reactive power and the reactive power of the first system is amplified and
Voltage control of the converter to control the reactive power of the first system
A voltage control system, wherein the control circuit of the second inverter device includes a positive or negative signal of an available active power set value and a second conversion device.
Amplifies the deviation of the active power output from the device from the negative or positive signal
The frequency of the second converter is controlled and the effective power of the second
A frequency control system for controlling the force and an output of the second converter.
The difference between the reactive power of the second system and the reactive power of the second
Voltage of the second converter to control the reactive power of the second system.
An inter-system power interchange control device having a voltage control system for controlling power.
成された第１、第２の変換装置の直流側を共通に接続し
たＡＣ−ＤＣ−ＡＣ変換装置を第１、第２の系統間に接
続して系統間の電力を融通する系統間電力融通システム
において、 前記変換装置の直流電圧を検出する直流電圧変換器と、
第１、第２の系統の負荷有効電力、負荷無効電力及び第
１、第２の変換装置が出力する有効電力、無効電力を検
出する電力検出回路と、直流電圧変換器出検出した直流
電圧、電力検出 回路で検出した各電力を用いて第１、第
２の変換装置を制御する制御回路を有し、 前記第１の変換装置の制御回路は、 第１の変換装置の出力する無効電力と第１系統の無効電
力との偏差を増幅し第１の変換装置を電圧制御して第１
系統の無効電力を制御する電圧制御系と、直流電圧の設
定値と検出値との偏差を増幅する直流電圧一定制御系
と、この直流電圧一定制御系の出力と融通する有効電力
設定の正又は負の信号と第１の変換装置の有効電力との
偏差を増幅し第１の変換装置を周波数制御して第１の系
統の有効電力を制御する周波数制御系とを有し、 前記第２の変換装置の制御回路は、 第２系統の無効電力と第２の変換装置の無効電力との偏
差を増幅し第２の変換装置を電圧制御して第２の系統の
無効電流を制御する電圧制御系と、前記直流電圧一定制
御系の出力と融通する有効電力設定の負又は正の信号と
第２の変換装置の有効電力との偏差を増幅し第２の変換
装置を周波数制御し第２の系統の有効電力を制御する周
波数制御系とを有することを特徴とする 系統間電力融通
制御装置。2. A system comprising a reactor, a transformer and an inverter, respectively.
Connect the DC side of the first and second converters
AC-DC-AC converter is connected between the first and second systems.
An inter-system power interchange system that continuously exchanges power between systems
In, a DC voltage converter for detecting the DC voltage of the converter,
Load active power, load reactive power and
1. The active power and reactive power output from the second converter are detected.
Output power detection circuit and DC voltage converter
Using the voltage and each power detected by the power detection circuit,
And a control circuit for controlling the first and second converters. The control circuit for the first converter includes a reactive power output from the first converter and a reactive power for the first system.
By amplifying the deviation from the force and controlling the voltage of the first converter,
Voltage control system to control the reactive power of the
DC voltage constant control system that amplifies the deviation between the constant value and the detected value
And the active power compatible with the output of this DC voltage constant control system
Between the positive or negative signal of the setting and the active power of the first converter.
Amplifying the deviation and controlling the frequency of the first converter, the first system
And a frequency control system that controls the active power of the second converter. The control circuit of the second converter is configured to control the bias between the reactive power of the second system and the reactive power of the second converter.
The difference is amplified and the voltage of the second converter is controlled to control the second system.
A voltage control system for controlling a reactive current;
Negative or positive signal of the active power setting compatible with the output of the control system
Amplify the deviation from the active power of the second converter and perform the second conversion.
Frequency control of the device to control the active power of the second system
An inter-system power interchange control device having a wave number control system .
１、第２系統の各有効電力の差の５０％に設定し等配分
の有効電力制御することを特徴とする請求項１又は２記
載の系統間電力融通制御装置。3. An active power setting of the second converter is set to a second
1, Set equally to 50% of the difference between each active power of the 2nd system
3. The active power control according to claim 1, wherein
Between the mounting of the system power interchange control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04478993A JP3254791B2 (en) | 1993-03-05 | 1993-03-05 | Power interchange control system between systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04478993A JP3254791B2 (en) | 1993-03-05 | 1993-03-05 | Power interchange control system between systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06261457A JPH06261457A (en) | 1994-09-16 |
| JP3254791B2 true JP3254791B2 (en) | 2002-02-12 |
Family
ID=12701181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04478993A Expired - Fee Related JP3254791B2 (en) | 1993-03-05 | 1993-03-05 | Power interchange control system between systems |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3254791B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4267132B2 (en) * | 1999-07-14 | 2009-05-27 | 東芝三菱電機産業システム株式会社 | Power converter |
| JP5918169B2 (en) * | 2013-04-18 | 2016-05-18 | 株式会社日立製作所 | Power accommodation system, power accommodation apparatus, and power accommodation method |
-
1993
- 1993-03-05 JP JP04478993A patent/JP3254791B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06261457A (en) | 1994-09-16 |
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