JPH099511A - Synchronization system of non-utility generation equipment - Google Patents
Synchronization system of non-utility generation equipmentInfo
- Publication number
- JPH099511A JPH099511A JP7149806A JP14980695A JPH099511A JP H099511 A JPH099511 A JP H099511A JP 7149806 A JP7149806 A JP 7149806A JP 14980695 A JP14980695 A JP 14980695A JP H099511 A JPH099511 A JP H099511A
- Authority
- JP
- Japan
- Prior art keywords
- emergency
- frequency difference
- synchronization
- mode
- generation equipment
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、コージェネレ
ーション発電設備に設置した複数台の発電機の並行運転
時や商用電源との連系時の同期投入に用いる自家用発電
設備の同期システムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronizing system for a private power generation facility, which is used, for example, for synchronous operation when a plurality of generators installed in a cogeneration power generation facility are operated in parallel or connected to a commercial power source.
【０００２】[0002]
【従来の技術】最近、省エネルギーを目的としたコージ
ェネレーション発電設備が脚光を浴びている。この種の
発電設備においては、高効率運転のため、２台の発電機
を設置して台数制御を行う場合が多い。2. Description of the Related Art Recently, cogeneration power generation equipment for the purpose of energy saving has been spotlighted. In this type of power generation equipment, two generators are often installed to control the number of units for highly efficient operation.
【０００３】また、通常の自家用発電設備においても、
非常用負荷の増加に伴い、１台の常用−非常用兼用発電
機では賄い切れなくなり、２台の常用−非常用兼用発電
機を設置し、常時は系統連系として常用運転を行い、非
常時は２台で非常用負荷を賄う構成とすることが多くな
ってきている。Further, even in a normal private power generation facility,
With the increase of the emergency load, one regular-emergency combined use generator will not be able to cover the demand, and two regular-emergency combined use generators will be installed to perform continuous operation as a grid connection at all times, in case of an emergency. It is becoming more common for two units to cover the emergency load.
【０００４】２台の発電機の並行運転時や系統連系時に
は、（１）．周波数が等しいこと、（２）．電圧が等し
いこと、（３）．投入時に同位相にあること、の条件を
満足させることが必要であり、そのために自動同期投入
装置が使用されている。When the two generators are operated in parallel or the system is connected, (1). The frequencies are equal, (2). The voltages are equal, (3). It is necessary to satisfy the condition of being in the same phase at the time of making, and for that purpose an automatic synchronizing making device is used.
【０００５】[0005]
【発明が解決しようとする課題】ところで、２台の常用
−非常用兼用発電機を設置し、常時は系統連系として常
用運転を行い、非常時は並行運転とするものでは、４０
秒で始動から同期完了まで行うことを要求される事例
（高速同期）が出てきている。常用時の商用電源との並
列操作は、１日に１回程度あり、回数が多いこともあっ
て、許容周波数差は０．１５Ｈｚ程度に設定している。
この場合、同期完了まで約６０秒を要するため、前述の
高速同期の要求を満たせないことになる。By the way, in the case where two regular-emergency dual-purpose generators are installed and the regular operation is performed as a grid interconnection at all times and the parallel operation is performed at the time of emergency, 40
There are cases (high-speed synchronization) in which it is required to perform from startup to completion of synchronization in seconds. The parallel operation with the commercial power source during normal use is about once a day, and since the number of times is large, the allowable frequency difference is set to about 0.15 Hz.
In this case, since it takes about 60 seconds to complete the synchronization, the above-mentioned request for high-speed synchronization cannot be satisfied.
【０００６】そこで本発明は、上記課題を解決し、系統
連系時には要求精度を保持し、非常時には高速同期が可
能な自家用発電設備の同期システムを提供することを目
的とする。SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above problems and provide a synchronizing system for a private power generation facility that maintains required accuracy during grid interconnection and is capable of high-speed synchronization in an emergency.
【０００７】[0007]
【課題を解決するための手段】本発明は、２台の発電機
を有し、かつ商用電源と連系する自家用発電設備におい
て、同期操作部を常時モードと非常時モードに分け、許
容周波数差を常時モードでは０．１５Ｈｚ程度、非常時
モードでは０．３Ｈｚ程度に許容周波数差整定回路で整
定し、その切替を自動的に行うようにしたことを特徴と
する。According to the present invention, in a private power generation facility having two generators and interconnected with a commercial power source, the synchronous operation section is divided into a constant mode and an emergency mode, and an allowable frequency difference is set. Is set to about 0.15 Hz in the constant mode and about 0.3 Hz in the emergency mode by the allowable frequency difference settling circuit, and the switching is automatically performed.
【０００８】[0008]
【作用】常時モードでは、許容周波数差が０．１５Ｈｚ
程度に整定されており、十分に要求精度を満たしてい
る。この場合には、同期完了までに約６０秒を要する。[Function] In the constant mode, the allowable frequency difference is 0.15 Hz
It is settled to some extent and sufficiently satisfies the required accuracy. In this case, it takes about 60 seconds to complete the synchronization.
【０００９】一方、非常時モードでは、自動切替により
許容周波数差が０．３Ｈｚ程度となり、４０秒同期が可
能となる。On the other hand, in the emergency mode, the allowable frequency difference becomes about 0.3 Hz due to the automatic switching, and the synchronization for 40 seconds becomes possible.
【００１０】[0010]
【実施例】以下、本発明を図面に示す実施例に基づいて
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings.
【００１１】本発明による自家用発電設備の同期システ
ムの実施例を図１に示す。図１に示すように同期操作部
１０は、常時モード１１Ａと非常時モード１１Ｂに分
け、許容周波数差は整定回路１２で常時モードでは０．
１５Ｈｚ、非常時モードでは０．３Ｈｚにそれぞれ整定
している。この許容周波数差は、自動切替としている。
また、同期操作部１０には、モード別に商用電源２１，
Ｎｏ．１発電機３１，Ｎｏ．２発電機３２から同期条件
を判定するための電気量（電圧，周波数，位相）を取り
入れている。FIG. 1 shows an embodiment of a synchronizing system for private power generation equipment according to the present invention. As shown in FIG. 1, the synchronization operation unit 10 is divided into a normal mode 11A and an emergency mode 11B, and the allowable frequency difference is 0.
It is set to 15 Hz and 0.3 Hz in the emergency mode. This allowable frequency difference is automatically switched.
In addition, the synchronization operation unit 10 includes a commercial power supply 21 for each mode,
No. 1 generator 31, no. The electric quantity (voltage, frequency, phase) for determining the synchronization condition is taken in from the two-generator 32.
【００１２】系統連系時には、常時モードとなって、許
容周波数差が０．１５Ｈｚ程度に整定されている。この
場合には、同期完了までに約６０秒を要するが、ゆっく
りした同期時間で台数制御により高効率での運転とな
る。During system interconnection, the mode is always on and the allowable frequency difference is settled to about 0.15 Hz. In this case, it takes about 60 seconds to complete the synchronization, but the operation is highly efficient by controlling the number of units in a slow synchronization time.
【００１３】一方、商用電源の停電時には発電機３１，
３２が解列され、両発電機３１，３２で非常用負荷を分
担することになる。非常時モードでは、自動切替により
許容周波数差が０．３Ｈｚ程度となり、４０秒同期、つ
まり高速同期が可能となる。On the other hand, when the commercial power source fails, the generator 31,
32 is disconnected, and both generators 31 and 32 will share the emergency load. In the emergency mode, the allowable frequency difference becomes about 0.3 Hz by automatic switching, and 40-second synchronization, that is, high-speed synchronization becomes possible.
【００１４】なお、許容周波数差は、０．１５Ｈｚ及び
０．３Ｈｚに限定されるものではなく、適宜の許容範囲
を有する。The allowable frequency difference is not limited to 0.15 Hz and 0.3 Hz, but has an appropriate allowable range.
【００１５】[0015]
【発明の効果】以上のように本発明によれば、常時モー
ドと非常時モードの許容周波数差を自動的に切り替える
ようにしたので、常時には要求精度を保持し、非常時に
は高速同期が可能となり、非常用負荷を略等分に分担で
きる。従って、コージェネレーション発電設備に適用し
た場合、適切な容量の発電設備で台数制御による高効率
の運用が期待できる。As described above, according to the present invention, the allowable frequency difference between the constant mode and the emergency mode is automatically switched, so that the required accuracy is always maintained and high-speed synchronization is possible in the emergency. , The emergency load can be divided into approximately equal parts. Therefore, when applied to a cogeneration power generation facility, highly efficient operation can be expected by controlling the number of power generation facilities with an appropriate capacity.
【図１】本発明による自家用発電設備の同期システムの
実施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of a synchronization system for private power generation equipment according to the present invention.
１０…同期操作部 １１Ａ…常時モード １１Ｂ…非常時モード １２…許容周波数差整定回路 ２１…商用電源 ３１…Ｎｏ．１発電機 ３２…Ｎｏ．２発電機 10 ... Synchronous operation part 11A ... Constant mode 11B ... Emergency mode 12 ... Allowable frequency difference settling circuit 21 ... Commercial power supply 31 ... No. 1 generator 32 ... No. 2 generators
Claims (1)
系する自家用発電設備において、同期操作部を常時モー
ドと非常時モードに分け、許容周波数差を常時モードで
は０．１５Ｈｚ程度、非常時モードでは０．３Ｈｚ程度
に許容周波数差整定回路で整定し、その切替を自動的に
行うようにしたことを特徴とする自家用発電設備の同期
システム。1. In a private power generation facility that has two generators and is connected to a commercial power source, the synchronous operation unit is divided into a continuous mode and an emergency mode, and an allowable frequency difference is about 0.15 Hz in the continuous mode. , In the emergency mode, it is set to about 0.3Hz by the allowable frequency difference settling circuit, and the switching is automatically performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7149806A JPH099511A (en) | 1995-06-16 | 1995-06-16 | Synchronization system of non-utility generation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7149806A JPH099511A (en) | 1995-06-16 | 1995-06-16 | Synchronization system of non-utility generation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH099511A true JPH099511A (en) | 1997-01-10 |
Family
ID=15483125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7149806A Pending JPH099511A (en) | 1995-06-16 | 1995-06-16 | Synchronization system of non-utility generation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH099511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009081942A (en) * | 2007-09-26 | 2009-04-16 | Yanmar Co Ltd | Distributed power system |
-
1995
- 1995-06-16 JP JP7149806A patent/JPH099511A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009081942A (en) * | 2007-09-26 | 2009-04-16 | Yanmar Co Ltd | Distributed power system |
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