JPH01194900A - Controller for engine generator - Google Patents
Controller for engine generatorInfo
- Publication number
- JPH01194900A JPH01194900A JP63018842A JP1884288A JPH01194900A JP H01194900 A JPH01194900 A JP H01194900A JP 63018842 A JP63018842 A JP 63018842A JP 1884288 A JP1884288 A JP 1884288A JP H01194900 A JPH01194900 A JP H01194900A
- Authority
- JP
- Japan
- Prior art keywords
- critical frequency
- frequency
- generator
- power
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010248 power generation Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
【発明の詳細な説明】
Ａ、産業上の利用分野
本発明は、ディーゼル機関と発電機を組み合わせた発電
装置の制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a control device for a power generation device that combines a diesel engine and a generator.
Ｂ９発明の概要
本発明は、ディーゼルエンジンと発電機を連結した発電
ユニットを並列運転状態としたエンジン発電機の制御装
置において、
発電機の負荷状況を検知し、これに基づいて臨界周波数
を固有振動から一定値以上離すような制御信号をガバナ
ーとＡＶＨに付与することにより、臨界周波数を固有振
動値から常に一定値以上離してねじり振動を抑えるよう
にしたものである。B9 Summary of the Invention The present invention is an engine generator control device in which a power generation unit that connects a diesel engine and a generator is operated in parallel, detects the load condition of the generator, and based on this detects the load condition of the generator and adjusts the critical frequency to the natural vibration. By applying a control signal to the governor and AVH that separates the critical frequency from the natural vibration value by a certain value or more, torsional vibration is suppressed by always separating the critical frequency from the natural vibration value by a certain value or more.
Ｃ３従来の技術
最近、低質重油を使用できる利点により、低速ディーゼ
ル機関を利用したエンジン発電機が注目され、実績を上
げつつある。但し、ディーゼル機関は往復動機関である
ため、軸系のねじり振動による問題（発電機出力の大幅
な変動、軸の破損など）がある。C3 Prior Art Recently, engine generators using low-speed diesel engines have been attracting attention and are gaining success due to the advantage of being able to use low-quality heavy oil. However, since diesel engines are reciprocating engines, there are problems due to torsional vibrations in the shaft system (significant fluctuations in generator output, shaft damage, etc.).
中速エンジンの場合は、機関に適切なはずみ車効果（Ｇ
Ｄ″）を持たせることにより、比較的簡単にねじり振動
を問題のない値に抑えることができる。For medium speed engines, the flywheel effect (G
D″), it is possible to relatively easily suppress torsional vibration to a value that does not cause problems.
Ｄ１発明が解決しようとする課題
しかし、低速ディーゼル機関の場合は、その回転数が低
いため、ＣＤ”をいくら付加してもねじり振動（固有振
動と臨界周波数が接近すること）を避けるのが難しい場
合がある。特に、既設中速ディーゼル機関と低速ディー
ゼル機関が並列される場合の臨界周波数は、相互の発電
機の負荷状況（負荷、力率など）で違うため、対応が非
常に難しい。また、既設ディーゼル機関は、当然そのＧ
Ｄ’値が定まっており、臨界周波数を避けるために新設
ディーゼル機関にＧＤ”を付加しようとしても、構造上
の制限があり逃げきれない場合もある。D1 Problem to be solved by the invention However, in the case of a low-speed diesel engine, since its rotation speed is low, it is difficult to avoid torsional vibration (natural vibration and critical frequency are close to each other) no matter how much CD is added. In particular, when an existing medium-speed diesel engine and a low-speed diesel engine are connected in parallel, the critical frequency differs depending on the load status (load, power factor, etc.) of each generator, so it is very difficult to deal with it. , the existing diesel engine naturally has that G
The D' value is fixed, and even if you try to add GD' to a newly installed diesel engine to avoid the critical frequency, it may not be possible to avoid it due to structural limitations.
現状では、事前に種々のケースを検討し、臨界周波数と
固有振動の接近を避けるＣＤ”を選定しているが、上述
したように発電機の負荷状況により周波数が変わるため
、問題が残る。Currently, various cases are considered in advance and a CD is selected that avoids the closeness of the critical frequency and natural vibration, but as mentioned above, the frequency changes depending on the load condition of the generator, so a problem remains.
Ｅ０課題を解決するための手段
本発明は、ディーゼルエンジンと発電機を連結した発電
ユニットを並列運転状態としたエンジン発電機の制御装
置において、発電機の負荷状況を発電機出力と力率から
検知し同期化力を算出して臨界周波数を求め、更にこれ
と各機の固有振動値との比較を行いその結果に基づいて
ガバナー及びＡＶＲに臨界周波数が固有周波数から所定
範囲以上能れるような制御信号を付与する臨界周波数制
御部を設けたことを特徴とするものである。Means for Solving the E0 Problem The present invention provides a control device for an engine generator in which a power generation unit in which a diesel engine and a generator are connected is operated in parallel, and the load condition of the generator is detected from the generator output and power factor. The synchronization force is calculated to find the critical frequency, and this is compared with the natural vibration value of each machine.Based on the results, the governor and AVR are controlled so that the critical frequency exceeds a predetermined range from the natural frequency. The device is characterized in that it includes a critical frequency control section that provides a signal.
Ｆ９作用 発電機出力と力率によって同期化力が変化する。F9 action The synchronization power changes depending on the generator output and power factor.
この同期化力によって臨界周波数が決定される。This synchronization force determines the critical frequency.
そこで、臨界周波数が各機の固有振動値から一定値以上
離れるような制御信号がガバナーとＡＶＨに付与され、
その結果、ねじり振動が極力抑制される。Therefore, a control signal is given to the governor and AVH so that the critical frequency deviates from the natural vibration value of each machine by a certain value or more.
As a result, torsional vibration is suppressed as much as possible.
Ｇ、実施例
以下、本発明を図示の実施例に基づいて詳細に説明する
。G. EXAMPLES The present invention will be explained in detail below based on illustrated examples.
第１図は本発明の一実施例を示すもので、１１はディー
ゼルエンジンＩＩＢと発電機１１Ｇを直結した第１の発
電ユニット、１２はガバナー、１３は前記発電機１１Ｇ
の回転数を計測する速度計（パルスピックアップ）、１
４は自動電圧調整装置（ＡＶＲ）、１５は遮断器、１６
は電力（発電機出力）測定部、１７は力率測定部、１８
−１及び１８−２は計器用変圧器（ＰＴ）、１９−１及
び１９−２は変流器（ＣＴ）である。FIG. 1 shows an embodiment of the present invention, in which 11 is a first power generation unit in which a diesel engine IIB and a generator 11G are directly connected, 12 is a governor, and 13 is the generator 11G.
A speedometer (pulse pickup) that measures the number of rotations, 1
4 is an automatic voltage regulator (AVR), 15 is a circuit breaker, 16
is a power (generator output) measurement section, 17 is a power factor measurement section, 18
-1 and 18-2 are potential transformers (PT), and 19-1 and 19-2 are current transformers (CT).
２にはディーゼルエンジン２１Ｅと発電機２１Ｇを直結
した第２の発電ユニット、２２はガバナー、２３は速度
計、２４はＡＶＲ１２５は遮断器、２６は電力測定部、
２７は力率測定部、２８−１及び２８−２はＰＴ、２９
−１及び２９−２はＣＴである。2 is a second power generation unit that directly connects a diesel engine 21E and a generator 21G, 22 is a governor, 23 is a speedometer, 24 is an AVR 125 is a circuit breaker, 26 is a power measurement unit,
27 is a power factor measuring section, 28-1 and 28-2 are PTs, 29
-1 and 29-2 are CT.
４０は臨界周波数制御部で、前記電力測定部１６，２６
と力率測定部１７．２７から計測信号を受け、所定の演
算、判定などを行ってその出力を前記ガバナー１２．２
２とＡＶＲＩ４．２４に付与する。この制御部４０の機
能を第２図にフロー図として示す。40 is a critical frequency control section, and the power measuring section 16, 26
and power factor measuring section 17.27, performs predetermined calculations, judgments, etc., and sends the output to the governor 12.2.
2 and AVRI 4.24. The functions of this control section 40 are shown as a flow diagram in FIG.
なお、第１のユニット１１をＡ機、第２のユニット２１
をＢ機と称し、各データの末尾にＡ、Ｂを付して区別し
ている。Note that the first unit 11 is machine A, and the second unit 21 is
is referred to as the B machine, and is distinguished by adding A and B to the end of each data.
第２図のブロック４１ではデータ（各エンジン発電機に
固有の数値）の設定を行う。そのデータはＧＤ”Ａ 、
ＧＤ”ａ、ｆ （定格周波数）、Ｆ Ａ （Ａ機の固有
周波数）、ＦＢ（Ｂ機の固有周波数）、ｎ。In block 41 of FIG. 2, data (numeric values unique to each engine generator) are set. The data is GD”A,
GD"a, f (rated frequency), F A (natural frequency of aircraft A), FB (natural frequency of aircraft B), n.
（極数比）である。(pole ratio).
ブロック４２では、運転状態における各計測値、即ちＡ
機出力ＰＡ、Ｂ機出力ＰＢ、Ａ機力率ｐｆＡ。In block 42, each measured value in the operating state, namely A
Machine power PA, B machine output PB, A machine power factor pfA.
Ｂ機力率ｐｆ＋ｓ、回転数ＮＡ、ＮＢが入力される。B machine power factor pf+s, rotation speed NA and NB are input.
ブロック４３では、同期化力Ｐ １ＩＡＩ Ｐ ｓａと
その比ｎ、、両様のＧＤ”の比ｎ１、臨界周波数Ｆｃが
演算される。In block 43, the synchronizing force P1IAIPsa and its ratio n, the ratio n1 of both GD'', and the critical frequency Fc are calculated.
ブロック４４〜４８では、各機の固有周波数ＦＡ、ＦＢ
と臨界周波数Ｆｃとの比較、判断が行われる。判断は、
原則として臨界周波数Ｆｃが各機の固有振動値より２０
％以上離れているか否かについて行われる。この判断結
果（制御不要、下げ制御必要、上げ制御必要）に基づい
て出力、力率を変化させる信号がガバナー１２．２２と
ＡＶＲ１４，２４に付与される。In blocks 44 to 48, the natural frequencies FA and FB of each aircraft are
A comparison is made between the Fc and the critical frequency Fc. The judgment is
As a general rule, the critical frequency Fc is 20 from the natural vibration value of each machine.
% or more apart. Based on this judgment result (control not required, lowering control required, increasing control required), a signal for changing the output and power factor is given to the governor 12.22 and the AVRs 14, 24.
この結果、両様の回転数及び電圧の調整が行われ、臨界
周波数と固有振動値は常に一定値以上離れるようになり
、ねじり振動が極力抑制される。As a result, the rotational speed and voltage are adjusted in various ways, so that the critical frequency and the natural vibration value are always separated by a certain value or more, and torsional vibration is suppressed as much as possible.
なお、上述の動作時にも負荷側より要求される発電所全
体の出力、力率を守らなければならないため、制御信号
は制限値内の大きさとなる。Note that even during the above-mentioned operation, the output and power factor of the entire power plant required by the load side must be maintained, so the control signal has a magnitude within the limit value.
また前記臨界周波数ＦＣの演算式は次の通りである。The calculation formula for the critical frequency FC is as follows.
Ｈ０発明の効果
以上のように本発明によれば、臨界周波数を決定する要
素の一つとしての同期化力が発電機の出力と力率によっ
て変化することに着目し、これらを制御して臨界周波数
を固有振動値から一定値以上離すようにしたので、確実
にねじり振動を抑制することができ、信頼性の向上が図
れる。また、運転開始後にも適正な運転が可能となる。H0 Effects of the Invention As described above, according to the present invention, attention is paid to the fact that the synchronization force, which is one of the factors that determines the critical frequency, changes depending on the output and power factor of the generator, and these are controlled to achieve the critical frequency. Since the frequency is separated from the natural vibration value by a certain value or more, torsional vibration can be reliably suppressed and reliability can be improved. Moreover, proper operation is possible even after the start of operation.
第１図は本発明に係るエンジン発電機の制御装置の一実
施例を示す回路図、第２図は同実施例の臨界周波数制御
部のフロー図である。
１１．２１・・・発電ユニット、ＩＩＥ、２１Ｅ・・・
ディーゼルエンジン、ＩＩＧ、２１Ｇ・・・発電機、１
２．２２−・・ガバナー、１４．２４−ＡＶＲ，１６，
２６・・・電力測定部、１７．２７・・・力率測定部、
４０・・・臨界周波数制御部。FIG. 1 is a circuit diagram showing one embodiment of an engine generator control device according to the present invention, and FIG. 2 is a flow diagram of a critical frequency control section of the same embodiment. 11.21...Power generation unit, IIE, 21E...
Diesel engine, IIG, 21G...generator, 1
2.22--Governor, 14.24-AVR, 16,
26...Power measurement section, 17.27...Power factor measurement section,
40...Critical frequency control section.
Claims (1)
ットを並列運転状態としたエンジン発電機の制御装置に
おいて、発電機の負荷状況を発電機出力と力率から検知
し同期化力を算出して臨界周波数を求め、更にこれと各
機の固有振動値との比較を行いその結果に基づいてガバ
ナー及びＡＶＲに臨界周波数が固有周波数から所定範囲
以上離れるような制御信号を付与する臨界周波数制御部
を設けたことを特徴とするエンジン発電機の制御装置。(1) In a control system for an engine generator that operates a power generation unit that connects a diesel engine and a generator in parallel, the load condition of the generator is detected from the generator output and power factor, and the synchronization force is calculated to determine criticality. A critical frequency control unit is provided that determines the frequency, compares this with the natural vibration value of each machine, and based on the result, provides a control signal to the governor and AVR so that the critical frequency deviates from the natural frequency by more than a predetermined range. An engine generator control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63018842A JPH01194900A (en) | 1988-01-29 | 1988-01-29 | Controller for engine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63018842A JPH01194900A (en) | 1988-01-29 | 1988-01-29 | Controller for engine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01194900A true JPH01194900A (en) | 1989-08-04 |
Family
ID=11982814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63018842A Pending JPH01194900A (en) | 1988-01-29 | 1988-01-29 | Controller for engine generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01194900A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009013155A2 (en) * | 2007-07-20 | 2009-01-29 | Siemens Aktiengesellschaft | Method and apparatus for connection of a generator, which is driven by a diesel engine, to an electrical power supply system |
| JP2009071908A (en) * | 2007-09-10 | 2009-04-02 | Univ Of Ryukyus | Simultaneous balancing controller having function of suppressing axial torsional vibration |
| WO2009051585A1 (en) * | 2007-10-19 | 2009-04-23 | Caterpillar Inc. | Power system having dual synchronization |
-
1988
- 1988-01-29 JP JP63018842A patent/JPH01194900A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009013155A2 (en) * | 2007-07-20 | 2009-01-29 | Siemens Aktiengesellschaft | Method and apparatus for connection of a generator, which is driven by a diesel engine, to an electrical power supply system |
| WO2009013155A3 (en) * | 2007-07-20 | 2009-05-14 | Siemens Ag | Method and apparatus for connection of a generator, which is driven by a diesel engine, to an electrical power supply system |
| JP2009071908A (en) * | 2007-09-10 | 2009-04-02 | Univ Of Ryukyus | Simultaneous balancing controller having function of suppressing axial torsional vibration |
| WO2009051585A1 (en) * | 2007-10-19 | 2009-04-23 | Caterpillar Inc. | Power system having dual synchronization |
| EP2346159A1 (en) * | 2007-10-19 | 2011-07-20 | Caterpillar Motoren GmbH & Co. KG | Power system having a dual synchronization |
| US8432065B2 (en) | 2007-10-19 | 2013-04-30 | Caterpillar Motoren Gmbh & Co. Kg | Power system having dual synchronization |
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