JP3228529B2 - Control device for superconducting energy storage device - Google Patents
Control device for superconducting energy storage deviceInfo
- Publication number
- JP3228529B2 JP3228529B2 JP20403691A JP20403691A JP3228529B2 JP 3228529 B2 JP3228529 B2 JP 3228529B2 JP 20403691 A JP20403691 A JP 20403691A JP 20403691 A JP20403691 A JP 20403691A JP 3228529 B2 JP3228529 B2 JP 3228529B2
- Authority
- JP
- Japan
- Prior art keywords
- power
- energy storage
- output
- storage device
- generator
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は超電導エネルギー貯蔵装
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 a superconducting energy storage device.
【０００２】[0002]
【従来の技術】超電導エネルギー貯蔵装置（Supercondu
ctingMagnetic Energy Storage 、以下説明の便宜上Ｓ
ＭＥＳと略記する）は、本来、電力系統において電力が
余剰になったときにこれを吸収して磁気エネルギーとし
て貯えておき、電力が不足になったときに磁気エネルギ
ーを電力に変換して電力系統に放出し、電力系統におけ
る電力の需要と供給がバランスするように制御される。
しかし、ＳＭＥＳはその有効電力と無効電力の吸収・放
出が変換装置により高速に制御できる能力を有している
ため、単にエネルギー貯蔵に留まらず、電力系統に発生
する速い負荷変動に対する負荷追従機能、即ち、周波数
変動制御に対する寄与並びに電力動揺や電圧変動の抑制
等の系統安定化制御に対する寄与が期待されている。電
力系統に発生する速い負荷変動に対する負荷追従を目的
としたＳＭＥＳの有効電力の制御装置については既に提
案済みである（特願平2-59108 号）。2. Description of the Related Art A superconducting energy storage device (Supercondu
ctingMagnetic Energy Storage, S for convenience of explanation below
MES is abbreviated to absorb power when it becomes excessive in the power system and store it as magnetic energy, and when the power becomes insufficient, convert the magnetic energy into power and convert it to power. And control is performed so that the demand and supply of power in the power system are balanced.
However, SMES has the ability to control the absorption and emission of its active power and reactive power at high speed by the converter, so it is not limited to energy storage. That is, contribution to frequency fluctuation control and system stabilization control such as suppression of power fluctuation and voltage fluctuation are expected. A SMES active power control device for the purpose of following a fast load change occurring in a power system has already been proposed (Japanese Patent Application No. 2-59108).
【０００３】[0003]
【発明が解決しようとする課題】上記した従来装置によ
れば、ＳＭＥＳの有効電力を制御して速い負荷変動に対
する負荷追従をさせるものであり、またＳＭＥＳの無効
電力の制御は静止型無効電力補償装置（ＳＶＣ）と同じ
ように、系統の電圧のみを一定に維持するものであっ
た。本発明は上記事情に鑑みてなされたものであり、Ｓ
ＭＥＳの無効電力を制御することにより、電力動揺の抑
制と過渡的な電圧変動の抑制をも可能な超電導エネルギ
ー貯蔵装置の制御装置を提供することを目的としてい
る。According to the above-mentioned conventional apparatus, the active power of the SMES is controlled to follow the load in response to a fast load change. The reactive power of the SMES is controlled by a static reactive power compensation. As with the device (SVC), only the voltage of the system was kept constant. The present invention has been made in view of the above circumstances,
An object of the present invention is to provide a control device for a superconducting energy storage device capable of suppressing power fluctuation and suppressing transient voltage fluctuation by controlling reactive power of a MES.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、本発明はＳＭＥＳ設置点の近傍の発電機の有効電力
を入力信号とし、電力系統固有の電力動揺を検出する第
１のバンドパスフィルターと、前記発電機の制動トルク
を増加させるように制御位相を調整する位相補償回路
と、制動効果を調整するための第１の制御回路を通して
得られる第１の出力と、ＳＭＥＳ設置点の近傍の母線の
電圧を入力信号とし、電力系統固有の電力動揺を検出す
る第２のバンドパスフィルターと、電圧変動の抑制効果
を調整するための第２の制御回路を通して得られる第２
の出力とを夫々加え合わせて得られる出力信号を、ＳＭ
ＥＳの有効・無効電力制御装置の無効電力基準値とする
構成とした。 ［作用］ ＳＭＥＳの無効電力が、上述した無効電力基準値に一致
するように制御されれば、無効電力基準値を構成する第
１の出力は電力動揺の抑制に寄与するように作用し、一
方、第２の出力は過渡的な電圧変動の抑制に寄与するよ
うに作用する。In order to achieve the above object, the present invention provides a first bandpass filter for detecting the power fluctuation inherent in a power system by using the active power of a generator near a SMES installation point as an input signal. A phase compensation circuit for adjusting the control phase so as to increase the braking torque of the generator; a first output obtained through a first control circuit for adjusting the braking effect; A second band-pass filter that detects power fluctuations inherent in the power system using the voltage of the bus as an input signal and a second band-pass filter that is obtained through a second control circuit that adjusts the effect of suppressing voltage fluctuations
The output signal obtained by adding the outputs of
It is configured to be the reactive power reference value of the active / reactive power control device of the ES. [Operation] If the reactive power of the SMES is controlled so as to match the above-described reactive power reference value, the first output constituting the reactive power reference value acts to contribute to suppression of power fluctuation. , The second output acts to contribute to the suppression of transient voltage fluctuations.
【０００５】[0005]
【実施例】以下図面を参照して実施例を説明する。図１
は本発明によるＳＭＥＳの制御装置を説明するための一
実施例の構成図であり、特に図１はＳＭＥＳの有効・無
効電力制御装置の中の無効電力基準値の作成回路を示
す。なお、図２はＳＭＥＳの有効・無効電力制御装置の
全体の制御ブロック図を参考として挙げている。そして
図２の点線部分は既出願内容であり、本発明のものと区
別するためにあえて示したものである。図２を簡単に説
明する。先ず、ＳＭＥＳは変圧器Ｔを介して母線に接続
されている。母線近傍からＰＱ検出器によって無効電力
Ｑを検出し、指令値Ｑs に一致するように運転され（正
常運転時Ｑref は零）、演算回路によるα（位相制御
角）、Ｍ（制御率）が演算され、各相ＧＴＯへ出力され
る。図２は本発明の要旨でないため、これ以上の説明は
しない。An embodiment will be described below with reference to the drawings. FIG.
FIG. 1 is a block diagram of an embodiment for explaining a SMES control device according to the present invention. In particular, FIG. 1 shows a circuit for creating a reactive power reference value in a SMES active / reactive power control device. FIG. 2 shows an overall control block diagram of the SMES active / reactive power controller. The dotted line in FIG. 2 is the content of the application already filed and is shown for the purpose of distinguishing it from the present invention. FIG. 2 will be described briefly. First, the SMES is connected to the bus via a transformer T. Detecting the reactive power Q from the bus near the PQ detector is operated to match the command value Q s (normal operation time Q ref is zero), by the arithmetic circuit alpha (phase control angle), M (control rate) Is calculated and output to each phase GTO. Since FIG. 2 is not the gist of the present invention, it will not be described further.
【０００６】次に図１を説明する。図１において、10は
母線で図示しないＳＭＥＳが接続される。11はＳＭＥＳ
設置点の近傍の発電機で、主変圧器12と送電線路13を介
して電力系統14に接続されている。15は負荷用変圧器、
16は負荷、17は母線10の電圧を検出する電圧変成器、18
は発電機11から母線10に流入する電流を検出する電流変
成器、19は有効電力トランスジューサで、その出力（直
流値）には発電機11の有効電力Ｐg が得られる。20は有
効電力Ｐg の中のある周波数帯域の成分ΔＰg を取り出
すバンドパスフィルター(1) 、21と22は夫々位相補償回
路と制御回路(1) である。Next, FIG. 1 will be described. In FIG. 1, reference numeral 10 denotes a bus, to which a SMES (not shown) is connected. 11 is SMES
A generator near the installation point, which is connected to a power system 14 via a main transformer 12 and a transmission line 13. 15 is a load transformer,
16 is a load, 17 is a voltage transformer for detecting the voltage of the bus 10, 18
Current transformer for detecting a current flowing from the generator 11 to the bus 10, 19 in the active power transducer, active power P g of the generator 11 is obtained at the output (DC value). 20 band-pass filter for taking out a component [Delta] P g of a frequency band in the active power P g (1), 21 and 22 are respectively phase compensation circuit and the control circuit (1).
【０００７】一方、23は電圧トランスジューサでその出
力（直流値）には母線10の電圧Ｖs が得られる。24は電
圧Ｖs の中のある周波数帯域の成分ΔＶs を取り出すバ
ンドパスフィルター(2) 、25は制御回路(2) である。制
御回路(1) 22の出力(1) （Ｑref (1) ）と制御回路(2)
25の出力(2) （Ｑref (2) ）が加算器26で合成され、そ
の出力として無効電力基準値（Ｑref ）が得られる。On the other hand, 23 voltage V s of the bus 10 is obtained at the output voltage transducer (DC value). Reference numeral 24 denotes a band-pass filter (2) for extracting a component ΔV s in a certain frequency band from the voltage V s , and reference numeral 25 denotes a control circuit (2). Output (1) (Q ref (1)) of control circuit (1) 22 and control circuit (2)
The output (2) (Q ref (2)) of 25 is synthesized by the adder 26, and the reactive power reference value (Q ref ) is obtained as the output.
【０００８】次に本発明の作用について説明する。有効
電力トランスジューサ19の出力Ｐg がバンドパスフィル
ター20に入力されると、その出力には電力系統固有の電
力動揺周波数（およそ１Hz前後の値である）を含むある
帯域の周波数成分ΔＰg が検出される。電力系統に発生
する電力動揺を抑制するには、発電機の回転速度ωと同
相の成分である発電機の制動トルク（電力）を増加する
ようにＳＭＥＳを制御すればよい。なお、発電機の回転
子の位相角δと回転速度ωの位相関係は90度ずれている
ので、ΔＰg （Δδと同相である）を入力信号とする場
合は90度位相を補償し、Δωが上昇（下降）したときは
ＳＭＥＳ設置点の母線の電圧を上げて（下げて）発電機
の有効電力（→制動力）を増加するようにＳＭＥＳの無
効電力を制御すればよいことになる。従って、位相補償
回路21では上述したように位相を90度近く補償し、制御
回路(1) 22では制動効果をどの程度にするかを調整す
る。Next, the operation of the present invention will be described. When the output P g of active power transducer 19 is input to the band-pass filter 20, the output electric power system specific power oscillation frequency (about 1Hz a value around) a certain band of frequency components [Delta] P g is detected including Is done. In order to suppress the power fluctuation generated in the power system, the SMES may be controlled so as to increase the braking torque (power) of the generator, which is a component having the same phase as the rotation speed ω of the generator. Since the phase relationship between the phase angle δ of the generator rotor and the rotation speed ω is shifted by 90 degrees, when ΔP g (which is in phase with Δδ) is used as the input signal, the 90-degree phase is compensated and Δω Rises (falls), the reactive power of the SMES may be controlled so as to increase (lower) the voltage of the bus at the SMES installation point and increase the active power (→ braking force) of the generator. Accordingly, the phase compensation circuit 21 compensates for the phase by nearly 90 degrees as described above, and the control circuit (1) 22 adjusts the degree of the braking effect.
【０００９】一方、電圧トランスジューサ23の出力Ｖs
がバンドパスフィルター24に入力されると、その出力に
はＰg の場合と同じように電力系統固有の電力動揺周波
数を含むある帯域の周波数成分ΔＶg が検出される。制
御回路(2) 25では電圧変動の抑制効果をどの程度にする
かを調整する。制御回路(1) 22の出力(1) （Ｑref (1)
）と制御回路(2) 25の出力(2) （Ｑref (2) ）は加算
器26で合成され、その出力として無効電力基準値（Ｑ
ref ）が得られるが、上述したように、Ｑref (1)の作
用により電力動揺が抑制され、Ｑref (2)の作用により
電力動揺に伴なう過渡的な電圧変動が抑制される。On the other hand, the output V s of the voltage transducer 23
Is input to the band-pass filter 24, a frequency component ΔV g of a certain band including a power fluctuation frequency peculiar to the power system is detected at the output thereof as in the case of P g . The control circuit (2) 25 adjusts the effect of suppressing the voltage fluctuation. Output (1) of control circuit (1) 22 (Q ref (1)
) And the output (2) (Q ref (2)) of the control circuit (2) 25 are synthesized by the adder 26, and as an output thereof, the reactive power reference value (Q
ref ) is obtained, but as described above, the power fluctuation is suppressed by the action of Q ref (1), and the transient voltage fluctuation accompanying the power fluctuation is suppressed by the action of Q ref (2).
【００１０】[0010]
【発明の効果】以上説明したように、本発明によればＳ
ＭＥＳの無効電力が基準値に一致するように制御する構
成としたので、電力系統に発生する電力動揺の抑制並び
に電力動揺に伴なう過渡的な電圧変動を抑制することが
可能となり、ＳＭＥＳの特性を十分利用できる。As described above, according to the present invention, S
Since the configuration is such that the reactive power of the MES is controlled to match the reference value, it is possible to suppress power fluctuations occurring in the power system and to suppress transient voltage fluctuations accompanying the power fluctuations. The property can be fully utilized.
【図１】本発明によるＳＭＥＳの制御装置を説明するた
めの一実施例の構成図。FIG. 1 is a configuration diagram of an embodiment for explaining a SMES control device according to the present invention.
【図２】ＳＭＥＳの有効・無効電力制御装置の全体の制
御ブロックを挙げた参考図。FIG. 2 is a reference diagram showing an overall control block of a SMES active / reactive power control device.
10 母線 11 発電機 17 電圧変成器 18 電流変成器 19 有効電力トランスジューサ 20 バンドパスフィルター(1) 21 位相補償回路 22 制御回路(1) 23 電圧トランスジューサ 24 バンドパスフィルター(2) 25 制御回路(2) 26 加算器 10 Bus 11 Generator 17 Voltage transformer 18 Current transformer 19 Active power transducer 20 Bandpass filter (1) 21 Phase compensation circuit 22 Control circuit (1) 23 Voltage transducer 24 Bandpass filter (2) 25 Control circuit (2) 26 Adder
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−250638（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02J 3/24 G05F 1/70 H02J 3/16 H02J 3/50 H02J 15/00 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-25038 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H02J 3/24 G05F 1/70 H02J 3 / 16 H02J 3/50 H02J 15/00
Claims (1)
いる近傍の発電機の有効電力を入力信号として、電力系
統固有の電力動揺を検出する第１のバンドパスフィルタ
ーと、前記発電機の制動トルクを増加させるように制御
位相を調整する位相補償回路と、制動効果を調整するた
めの第１の制御回路を介して第１の出力を得ると共に、
当該超電導エネルギー貯蔵装置が設置されている母線の
電圧を入力信号として、電力系統固有の電力動揺を検出
する第２のバンドパスフィルターと、電圧変動の抑制効
果を調整するための第２の制御回路を介して第２の出力
を得、前記第１，第２の各出力を加算器で合成して得ら
れる出力を無効電力基準値とすることを特徴とする超電
導エネルギー貯蔵装置の制御装置。1. An electric power system in which active power of a generator near a superconducting energy storage device is provided as an input signal.
A first band-pass filter for detecting power fluctuation inherent to the power generator, and controlling to increase a braking torque of the generator.
Phase compensation circuit to adjust the phase, and to adjust the braking effect
Obtaining a first output through a first control circuit for
Using the voltage of the bus on which the superconducting energy storage device is installed as an input signal , detects power fluctuations specific to the power system
Second band-pass filter and voltage fluctuation suppression effect
Obtain a second output via a second control circuit for adjusting a result, the first, characterized in that the reactive power reference value output obtained by combining with each of the second output adder A control device for a superconducting energy storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20403691A JP3228529B2 (en) | 1991-07-18 | 1991-07-18 | Control device for superconducting energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20403691A JP3228529B2 (en) | 1991-07-18 | 1991-07-18 | Control device for superconducting energy storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0530686A JPH0530686A (en) | 1993-02-05 |
| JP3228529B2 true JP3228529B2 (en) | 2001-11-12 |
Family
ID=16483694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20403691A Expired - Fee Related JP3228529B2 (en) | 1991-07-18 | 1991-07-18 | Control device for superconducting energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3228529B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU777509B2 (en) | 1999-01-29 | 2004-10-21 | American Superconductor Corporation | Electric utility system with superconducting magnetic energy storage |
| US6906434B1 (en) * | 1999-01-29 | 2005-06-14 | American Superconductor Corporation | Electric utility system with superconducting magnetic energy storage |
| US6392856B1 (en) * | 2000-04-24 | 2002-05-21 | American Superconductor Corporation | Method and system for providing voltage support to a load connected to a utility power network |
| US7091703B2 (en) | 2004-03-04 | 2006-08-15 | American Superconductor Corporation | Dynamic reactive compensation system and method |
| CN1333505C (en) * | 2005-07-15 | 2007-08-22 | 清华大学 | Steady-state controlling method of current parallel voltage compensator for superconductive energy storage |
| US7940029B2 (en) | 2008-07-02 | 2011-05-10 | American Superconductor Corporation | Static VAR corrector |
| JP6368456B2 (en) * | 2012-08-23 | 2018-08-01 | 株式会社ダイヘン | Power fluctuation component output suppression device |
| CN108471129A (en) * | 2018-04-17 | 2018-08-31 | 武汉大学 | A kind of microgrid Transient Stability Control method of based superconductive magnetic storage energy-accumulator |
-
1991
- 1991-07-18 JP JP20403691A patent/JP3228529B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0530686A (en) | 1993-02-05 |
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