JPH061952B2 - Induction generator system parallel insertion method - Google Patents
Induction generator system parallel insertion methodInfo
- Publication number
- JPH061952B2 JPH061952B2 JP62236481A JP23648187A JPH061952B2 JP H061952 B2 JPH061952 B2 JP H061952B2 JP 62236481 A JP62236481 A JP 62236481A JP 23648187 A JP23648187 A JP 23648187A JP H061952 B2 JPH061952 B2 JP H061952B2
- Authority
- JP
- Japan
- Prior art keywords
- generator
- induction generator
- voltage
- parallel
- induction
- 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 - Lifetime
Links
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- Supply And Distribution Of Alternating Current (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、系統と連系される中小容量の水力発電機とし
て使用することのできる巻線形誘導発電機を系統へ並入
する際における突入電流を防止するための系統並入方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a plunge for parallel insertion of a wound-rotor induction generator that can be used as a small-to-medium-sized hydroelectric generator connected to a grid into the grid. The present invention relates to a system parallel insertion method for preventing electric current.
中小容量機の水力発電機には、その経済性および運用の
簡略化を目的として、一般に巻線形誘導発電機が使用さ
れる。さらに、小容量発電機の場合、電力系統の配電系
に連系するケースが多い。一方、その配電系の短絡容量
は小さく、誘導発電機の並入操作にともなう、その突入
電流のために電圧動揺幅が大きい。そこで、電圧変動を
抑制するために、誘導発電機の投入時にのみ発電機１次
側に直列リアクトルを挿入したり、コンデンサを併用し
たりしていた。しかしながら、従来の方式は投入時の電
圧ショックを十分に補償しようとすると、装置が非常に
大形で高コストになるという問題があった。A wound-rotor induction generator is generally used for a small-to-medium-capacity hydroelectric generator for the purpose of economic efficiency and simplification of operation. Furthermore, in the case of a small-capacity generator, it is often connected to the power distribution system. On the other hand, the short-circuit capacity of the distribution system is small, and the voltage fluctuation range is large due to the inrush current accompanying the parallel operation of the induction generator. Therefore, in order to suppress voltage fluctuations, a series reactor is inserted in the primary side of the generator only when the induction generator is turned on, or a capacitor is used together. However, the conventional method has a problem that the device is very large and the cost is high in order to sufficiently compensate the voltage shock at the time of turning on.
本発明の目的は比較的小形な補助装置と簡単な制御回路
手段で実現できて、電圧ショックを殆ど皆無にすること
のできる並入方法を提供することにある。It is an object of the present invention to provide a paralleling method which can be realized with a relatively small auxiliary device and simple control circuit means and which can eliminate almost any voltage shock.
上記目的は、本発明によれば、巻線形誘導発電機の系統
並入時に、発電機１次側に系統定格近傍の電圧を発生さ
せるよう発電機２次側を直流励磁し、同期並入条件が満
足された際に、発電機１次側を系統へ並入し、並入完了
後に直流励磁を停止して発電機２次側端子を抵抗器を介
して短絡することによって達成される。According to the present invention, the secondary side of the generator is DC-excited so that a voltage near the system rating is generated on the primary side of the generator when the winding type induction generator is connected in parallel to the system. Is satisfied, the primary side of the generator is connected in parallel to the system, DC excitation is stopped after completion of paralleling, and the secondary side terminal of the generator is short-circuited via a resistor.
本発明による方法によれば、巻線形誘導発電機は、系統
並入時のみ、同期発電機として動作し、同期発電機では
公知の同期並入操作技術の利用のもとに、電圧ショック
なしに系統への並入が行われる。According to the method of the present invention, the wound-rotor induction generator operates as a synchronous generator only when the system is parallel-inserted, and the synchronous parallel-insertion operation technique known in the synchronous generator is used to eliminate a voltage shock. Parallel entry into the system is performed.
図は本発明による並入方法を実現するための装置の実
施例を示す回路図である。FIG. 1 is a circuit diagram showing an embodiment of an apparatus for realizing the parallel insertion method according to the present invention.
図において、１は巻線形誘導発電機であり、その回転子
巻線（２次側）は２で示されている。発電機１の固定子
巻線（１次側）はしゃ断機３を介して図示されていない
系統、例えば配電系へ投入可能である。３相の回転子巻
線２の端子は図示を省略されたスリップリングおよびブ
ラシを介して静止側装置部分に導かれており、ここで抵
抗器４を介して開閉器５により短絡可能である。In the figure, 1 is a wound-rotor induction generator, and its rotor winding (secondary side) is indicated by 2. The stator winding (primary side) of the generator 1 can be connected to a system (not shown), for example, a distribution system, via the breaker 3. The terminals of the three-phase rotor winding 2 are guided to the stationary side device portion via slip rings and brushes (not shown), and can be short-circuited by the switch 5 via the resistor 4 here.
さらに巻線２は開閉器６を介して整流器７の直流側に接
続可能であり、この整流器は交流開閉器８および誘導電
圧調整器９を介して系統に接続可能になっている。Furthermore, the winding 2 can be connected to the DC side of the rectifier 7 via the switch 6, and this rectifier can be connected to the system via the AC switch 8 and the induction voltage regulator 9.
発電機１の回転軸は図示されていない水車等の原動機に
て駆動される。起動時には水車タービンの調速装置（一
般に負荷制限装置による調整か、ガバナによる調整が使
用される。）によって定格速度に調整された後、開閉器
６が投入される。このとき交流開閉器８は投入状態にあ
って、したがって発電機１の２次側は整流器７の直流電
圧を印加されて直流励磁される。この場合に、誘導電圧
調整器９は、発電機１の１次側に系統電圧の定格値に相
当する電圧が発生するように調整される。同期発電機の
同期投入操作では公知の図示されていない同期監視リレ
ーによって、発電機の１次側の振幅、周波数のみなら
ず、位相が系統電圧に対して同期並入条件が満足された
とき、しゃ断器３のための投入指令が発せられる。この
並入操作後に開閉器５が投入され、開閉器６が開放され
る。これによって、２次側巻線端子は所要抵抗値の抵抗
器４にて短絡され、発電機１は本来の誘導発電機として
動作して系統と連係した運転に入る。The rotating shaft of the generator 1 is driven by a prime mover such as a water turbine (not shown). At the time of startup, the switch 6 is closed after the speed is adjusted to the rated speed by the speed governor of the water turbine (adjustment by the load limiter or adjustment by the governor is generally used). At this time, the AC switch 8 is in the closed state, and therefore the secondary side of the generator 1 is applied with the DC voltage of the rectifier 7 and is DC-excited. In this case, the induction voltage regulator 9 is adjusted so that a voltage corresponding to the rated value of the system voltage is generated on the primary side of the generator 1. In the synchronous closing operation of the synchronous generator, when not only the amplitude and frequency of the primary side of the generator but also the phase are satisfied by the synchronous paralleling condition with respect to the system voltage, by a well-known synchronous monitoring relay, A closing command for the circuit breaker 3 is issued. After this parallel insertion operation, the switch 5 is turned on and the switch 6 is opened. As a result, the secondary winding terminal is short-circuited by the resistor 4 having a required resistance value, and the generator 1 operates as an original induction generator and starts operation linked to the grid.
以上のように、本発明によれば、巻線形誘導発電機を系
統並入時のみ同期発電機として動作させることにより、
従来における主回路への直流リアクトルの挿入を必要と
せずに、電圧ショックを殆ど皆無にして並入操作を行う
ことができる。As described above, according to the present invention, by operating the wound-rotor induction generator as a synchronous generator only when the system is inserted in parallel,
The parallel insertion operation can be performed with almost no voltage shock without requiring the insertion of the DC reactor in the conventional main circuit.
第１図は本発明による方法を実施するための装置の実施
例を示す回路図である。 １……誘導発電機、２……回転子巻線（２次巻線）、３
……主回路しゃ断器、４……抵抗器、５，６……開閉
器、７……整流器、８……交流開閉器、９……誘導電圧
調整器。FIG. 1 is a circuit diagram showing an embodiment of an apparatus for carrying out the method according to the invention. 1 ... Induction generator, 2 ... Rotor winding (secondary winding), 3
...... Main circuit breaker, 4 ... Resistor, 5,6 ... Switch, 7 ... Rectifier, 8 ... AC switch, 9 ... Induction voltage regulator.
Claims (1)
１次側に系統定格近傍の電圧を発生させるよう発電機２
次側を直流励磁し、同期並入条件が満足された際に、発
電機１次側を系統へ並入し、並入完了後に直流励磁を停
止して発電機２次側端子を抵抗器を介して短絡すること
を特徴とする誘導発電機の系統並入方法。1. A generator 2 for generating a voltage in the vicinity of the system rating on the primary side of the generator when the winding type induction generator is connected in parallel to the system.
When the secondary side is excited by DC and the synchronous paralleling condition is satisfied, the primary side of the generator is paralleled into the system, and after the parallelization is complete, DC excitation is stopped and the secondary side terminal of the generator is connected with a resistor. A method for inserting an induction generator into a system, which is characterized in that it is short-circuited via the system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62236481A JPH061952B2 (en) | 1987-09-21 | 1987-09-21 | Induction generator system parallel insertion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62236481A JPH061952B2 (en) | 1987-09-21 | 1987-09-21 | Induction generator system parallel insertion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6481624A JPS6481624A (en) | 1989-03-27 |
| JPH061952B2 true JPH061952B2 (en) | 1994-01-05 |
Family
ID=17001370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62236481A Expired - Lifetime JPH061952B2 (en) | 1987-09-21 | 1987-09-21 | Induction generator system parallel insertion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061952B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268024A (en) * | 1985-09-18 | 1987-03-27 | 富士電機株式会社 | Parallel connecting method for power system of induction generators |
-
1987
- 1987-09-21 JP JP62236481A patent/JPH061952B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 室町康蔵『最新高級電験講座第７巻直流機・同期機』（昭和５３−２−２８）株式会社電気書院ｐ．２４５〜ｐ．２５１ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6481624A (en) | 1989-03-27 |
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