JPH114543A - Restricting apparatus of variation in inrush current output of induction generator - Google Patents
Restricting apparatus of variation in inrush current output of induction generatorInfo
- Publication number
- JPH114543A JPH114543A JP9152751A JP15275197A JPH114543A JP H114543 A JPH114543 A JP H114543A JP 9152751 A JP9152751 A JP 9152751A JP 15275197 A JP15275197 A JP 15275197A JP H114543 A JPH114543 A JP H114543A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- compensation
- serial
- series
- induction 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.)
- Granted
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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、誘導発電機の突
入電流および出力変動抑制する装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for suppressing inrush current and output fluctuation of an induction generator.
【０００２】[0002]
【従来の技術】風力発電に用いられる発電機としては、
小形、軽量メンテナンスフリーおよび励磁装置、位相同
期回路が不要などの点からかご形誘導発電機が多く採用
されている。しかし、誘導発電機を系統に連系する場
合、突入電流が流れるためそれを抑制する必要がある。
この突入電流抑制方式としては後記表１に示す種々の方
式がある。2. Description of the Related Art As a generator used for wind power generation,
A squirrel-cage induction generator is widely used because it is small, lightweight, maintenance-free, and does not require an excitation device or a phase-locked loop. However, when an induction generator is connected to a system, it is necessary to suppress an inrush current since it flows.
As the rush current suppressing method, there are various methods shown in Table 1 below.
【０００３】また、風力発電機は構造が簡単で保守性能
の高く、騒音が低い固定翼ストール制御が主流である。
しかし、翼を固定しているために誘導発電機に与えるト
ルクが風力の変化によって変化し、それに伴い発電機出
力も変動し、配電系統に影響を与える。[0003] In addition, a wind turbine has a simple structure, a high maintenance performance, and a low-noise fixed-wing stall control is mainly used.
However, since the wings are fixed, the torque applied to the induction generator changes due to a change in wind power, and accordingly, the generator output also changes, affecting the distribution system.
【０００４】近年、系統補償装置として直列形系統補償
装置が注目され実用化に向けて研究が行われている。こ
れは次のような特長を有する。[0004] In recent years, a series type system compensator has been attracting attention as a system compensator, and research has been conducted toward its practical use. This has the following features.
【０００５】（ａ）ＳＶＧ，ＳＶＣなど並列形系統補償
装置は、負荷容量と同じ容量の装置が必要となるが、直
列形は系統のリアクタンス分のみ電圧を補償すればよ
く、小容量化できる。(A) A parallel type system compensator such as SVG or SVC requires a device having the same capacity as the load capacity. However, the series type only needs to compensate the voltage for the reactance of the system, and the capacity can be reduced.
【０００６】（ｂ）直列形系統補償装置は系統と直列に
接続された電圧源とみなすことができる。電圧の補償量
を調節することによって、上位系統の変動による下位系
統の電圧変動を抑制できる。(B) The series type system compensator can be regarded as a voltage source connected in series with the system. By adjusting the amount of voltage compensation, voltage fluctuations in the lower system due to fluctuations in the higher system can be suppressed.
【０００７】（ｃ）補償電圧の位相を変化させて力率改
善が可能である。(C) The power factor can be improved by changing the phase of the compensation voltage.
【０００８】[0008]
【発明が解決しようとする課題】表１に従来風力発電機
の突入電流抑制方法の特徴を示す。Table 1 shows the features of the conventional inrush current suppression method for wind power generators.
【０００９】[0009]
【表１】 [Table 1]
【００１０】表１から突入電流抑制する方式としてはソ
フトスタート方式が有効である。しかし、系統並列時の
突入電流を抑制することはできるが、連系後の電圧・出
力変動を抑制することができない。As shown in Table 1, the soft start method is effective as a method for suppressing the inrush current. However, it is possible to suppress the rush current at the time of system parallel, but it is not possible to suppress the voltage / output fluctuation after interconnection.
【００１１】この発明は、系統並列時の突入電流の抑制
と連系後の電圧・出力変動を抑制できる誘導発電機の突
入電流出力変動抑制装置を提供するものである。The present invention provides an inrush current output fluctuation suppression device for an induction generator, which can suppress inrush current when the systems are paralleled and voltage / output fluctuation after interconnection.
【００１２】[0012]
【課題を解決するための手段】本発明の誘導発電機の突
入電流出力変動抑制装置は、配電系統とこれに連系する
誘導発電機との間に直列変圧器を接続すると共に、シス
テム上位系統に並列変圧器を接続し、並列変圧器の二次
側に無効電力補償制御される並列補償用変換装置を接続
し、直列変圧器の二次側に無効電力補償制御および有効
電力補償制御または位相制御される直列補償用変換装置
を接続し、直列変圧器の洩れインピーダンスにより誘導
発電機の突入電流を抑制すると共に、並列補償用変換装
置および直列補償用変換装置で電圧変動の抑制と誘導発
電機の出力変動を抑制することを特徴とするものであ
る。The inrush current output fluctuation suppressing device for an induction generator according to the present invention connects a series transformer between a distribution system and an induction generator interconnected with the distribution system, and further includes a system upper system. Connect a parallel transformer to the secondary transformer, connect a conversion device for parallel compensation controlled by reactive power compensation to the secondary side of the parallel transformer, and connect reactive power compensation control and active power compensation control or phase to the secondary side of the series transformer. A controlled series compensation converter is connected to suppress the inrush current of the induction generator due to the leakage impedance of the series transformer, and the parallel compensation converter and the series compensation converter suppress voltage fluctuations and reduce the induction generator. In which the output fluctuation is suppressed.
【００１３】直列補償用変換装置にはサイリスタ制御回
路を接続して事故電流流入時の電流をサイリスタ制御回
路に流して直列補償用変換装置を保護するのが望まし
い。Preferably, a thyristor control circuit is connected to the converter for series compensation, and a current at the time of the inflow of an accident current flows through the thyristor control circuit to protect the converter for series compensation.
【００１４】[0014]
【発明の実施の形態】図１に実施の形態にかかる誘導発
電機の突入電流出力変動抑制装置のシステム構成を示
す。図において、ＩＧは配電系統Ｓに直列変圧器Ｔ
ＲS，遮断器ＣＢ2を介して接続された誘導発電機、１は
系統Ｓに遮断器ＣＢ１，並列変圧器ＴＲPを介して接続
された並列形系統補償用電力変換装置（以下単に並列補
償用変換装置という）、２は上記直列変圧器ＴＲSの２
次側に接続された直列形系統補償用電力変換装置（以下
単に並列補償用電力変換器という）、３は直列補償用変
換装置２と並列に接続された変換装置２のインバータを
保護するサイリスタ制御回路である。変換装置１と２の
直流側には共通の直流コンデンサＣが接続されている。FIG. 1 shows a system configuration of an inrush current output fluctuation suppressing device of an induction generator according to an embodiment. In the figure, IG is a series transformer T connected to the distribution system S.
R S, is connected through a circuit breaker CB 2 the induction generator, 1 breaker CB1 to the system S, parallel transformer TR P connected in parallel type systems compensating power converter via a (hereinafter simply parallel compensation 2 is the series transformer TR S 2
A series-type system compensation power converter (hereinafter simply referred to as a parallel compensation power converter) connected to the secondary side is a thyristor control 3 for protecting the inverter of the converter 2 connected in parallel with the series compensation converter 2. Circuit. A common DC capacitor C is connected to the DC side of the converters 1 and 2.
【００１５】並列，直列補償用変換装置１，２のインバ
ータはＩＧＢＴ，ＧＴＯ等の自励式半導体素子を用いて
構成され、無効電力補償制御によりシステム上位側端子
電圧Ｖt及び下位側端子電圧Ｖgを調整する。また、直列
補償用変換装置２は事故電流流入時にサイリスタ制御回
路３に電流を流して保護する。[0015] parallel, the inverter of the series compensation converter 1 and 2 IGBT, is constructed using a self-excited semiconductor device of GTO, etc., the system upper terminal voltage by the reactive power compensation control V t and the lower terminal voltage V g To adjust. Also, the converter 2 for series compensation protects the thyristor control circuit 3 by flowing a current when an accident current flows.
【００１６】上記システムは並列側を電流源、直流側を
電圧源とした図２に示す等価回路で表すことができる。The above system can be represented by an equivalent circuit shown in FIG. 2 where the parallel side is a current source and the DC side is a voltage source.
【００１７】並列補償用変換装置１は系統Ｓに無効電力
ｊＱPARを供給し、直列補償用変換装置２は系統Ｓに有
効・無効電力（ＰSER＋ｊＱSER）を供給する。電圧変動
の抑制は無効電力を補償すればよいので、並列，直列双
方の変換装置１，２を無効電力補償制御することによっ
て無効電力ｊＱPAR，ｊＱSERを変化させ端子電圧Ｖt，
Ｖgの電圧変動を抑制することができる。したがって、
無効電力の補償を双方で分担することにより並列補償用
変換装置２の容量を小さくすることができる。The converter 1 for parallel compensation supplies reactive power jQ PAR to the system S, and the converter 2 for series compensation supplies active / reactive power (P SER + jQ SER ) to the system S. Since the suppression of the voltage fluctuation can be achieved by compensating the reactive power, the reactive powers jQ PAR and jQ SER are changed by controlling the reactive power compensation of both the parallel and serial converters 1 and 2 to change the terminal voltages V t ,
Vg voltage fluctuation can be suppressed. Therefore,
By sharing the reactive power compensation between the two, the capacity of the parallel compensation converter 2 can be reduced.
【００１８】また、誘導発電機ＩＧの出力変動は直列補
償用変換装置２を有効電力補償制御することにより抑制
できる。また出力変動は変換装置２の位相制御によって
もでき、系統の力率改善が可能となる。Further, the output fluctuation of the induction generator IG can be suppressed by performing the active power compensation control on the converter 2 for series compensation. Further, the output fluctuation can also be performed by the phase control of the converter 2, and the power factor of the system can be improved.
【００１９】誘導発電機ＩＧ連系時の突入電流は直列変
圧器ＴＲSの洩れインピーダンスＺTRにより抑制され
る。The inrush current at the time of IG connection of the induction generator is suppressed by the leakage impedance Z TR of the series transformer TR S.
【００２０】[0020]
【発明の効果】この発明は、上述のように構成されてい
るので、以下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.
【００２１】（１）直列変圧器のインピーダンスにより
突入電流の抑制が可能である。(1) Inrush current can be suppressed by the impedance of the series transformer.
【００２２】（２）直列補償用変換器により発電機上位
系統電圧および出力の変動を抑制することが可能であ
る。(2) It is possible to suppress fluctuations in the voltage and output of the upper system of the generator by the converter for series compensation.
【００２３】（３）直列補償用変換器の位相制御により
力率改善が可能である。(3) The power factor can be improved by controlling the phase of the series compensation converter.
【００２４】（４）直列変圧器の採用によりシステムの
小型化が可能である。(4) The size of the system can be reduced by employing a series transformer.
【図１】実施の形態にかかるシステム構成図。FIG. 1 is a system configuration diagram according to an embodiment.
【図２】システム等価回路図。FIG. 2 is a system equivalent circuit diagram.
１…並列補償用変換器 ２…直列補償用変換器 ３…インバータ保護用サイリスタ制御回路 ＩＧ…誘導発電機 Ｓ…配電系統 ＴＲP…並列変圧器 ＴＲS…直列変圧器。1 ... Parallel compensation converter 2 ... series compensation converter 3 ... inverter protection thyristor control circuit IG ... induction generator S ... distribution system TR P ... parallel transformer TR S ... series transformer.
Claims (2)
の間に直列変圧器を接続すると共に、システム上位系統
に並列変圧器を接続し、 並列変圧器の二次側に無効電力補償制御される並列補償
用変換装置を接続し、 直列変圧器の二次側に無効電力補償制御および有効電力
補償制御または位相制御される直列補償用変換装置を接
続し、 直列変圧器の洩れインピーダンスにより誘導発電機の突
入電流を抑制すると共に、並列補償用変換装置および直
列補償用変換装置で電圧変動の抑制と誘導発電機の出力
変動を抑制することを特徴とする誘導発電機の突入電流
出力変動抑制装置。1. A series transformer is connected between a distribution system and an induction generator connected to the distribution system, a parallel transformer is connected to a higher system of the system, and reactive power compensation is provided on a secondary side of the parallel transformer. Connect the controlled parallel compensation converter, connect the reactive power compensation control and the active power compensation control or the phase controlled series compensation converter to the secondary side of the series transformer, and use the leakage impedance of the series transformer. Inrush current output fluctuation of the induction generator, characterized by suppressing the inrush current of the induction generator, and suppressing the voltage fluctuation and the output fluctuation of the induction generator with the converter for parallel compensation and the converter for series compensation. Suppression device.
直列補償用変換装置を保護するサイリスタ制御回路を接
続したことを特徴とする誘導発電機の突入電流出力変動
抑制装置。2. The inrush of an induction generator according to claim 1, wherein a thyristor control circuit is connected to the series-compensation converter to protect the series-compensation converter by supplying a current when an accident current flows. Current output fluctuation suppression device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15275197A JP3724122B2 (en) | 1997-06-11 | 1997-06-11 | Inrush current output fluctuation suppression device for induction generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15275197A JP3724122B2 (en) | 1997-06-11 | 1997-06-11 | Inrush current output fluctuation suppression device for induction generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH114543A true JPH114543A (en) | 1999-01-06 |
| JP3724122B2 JP3724122B2 (en) | 2005-12-07 |
Family
ID=15547378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15275197A Expired - Fee Related JP3724122B2 (en) | 1997-06-11 | 1997-06-11 | Inrush current output fluctuation suppression device for induction generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3724122B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6924627B1 (en) | 1999-09-13 | 2005-08-02 | Aloys Wobben | Method of reactive power regulation and aparatus for producing electrical energy in an electrical network |
| JP2006109568A (en) * | 2004-10-01 | 2006-04-20 | Mitsubishi Heavy Ind Ltd | Generator, method of interconnecting generator to system, and program for controlling system interconnection of generator |
| JP2015180164A (en) * | 2014-03-20 | 2015-10-08 | 三菱電機株式会社 | Power generator voltage controller |
| CN109031179A (en) * | 2018-07-04 | 2018-12-18 | 云南电网有限责任公司 | Main transformer CT polarity and protection direction-adaptive method of calibration |
-
1997
- 1997-06-11 JP JP15275197A patent/JP3724122B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6924627B1 (en) | 1999-09-13 | 2005-08-02 | Aloys Wobben | Method of reactive power regulation and aparatus for producing electrical energy in an electrical network |
| JP2006109568A (en) * | 2004-10-01 | 2006-04-20 | Mitsubishi Heavy Ind Ltd | Generator, method of interconnecting generator to system, and program for controlling system interconnection of generator |
| JP2015180164A (en) * | 2014-03-20 | 2015-10-08 | 三菱電機株式会社 | Power generator voltage controller |
| CN109031179A (en) * | 2018-07-04 | 2018-12-18 | 云南电网有限责任公司 | Main transformer CT polarity and protection direction-adaptive method of calibration |
| CN109031179B (en) * | 2018-07-04 | 2020-11-24 | 云南电网有限责任公司 | Main transformer CT polarity and protection direction self-adaptive checking method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3724122B2 (en) | 2005-12-07 |
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