JP2004048990A - Plant controller - Google Patents

Plant controller Download PDF

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Publication number
JP2004048990A
JP2004048990A JP2003196049A JP2003196049A JP2004048990A JP 2004048990 A JP2004048990 A JP 2004048990A JP 2003196049 A JP2003196049 A JP 2003196049A JP 2003196049 A JP2003196049 A JP 2003196049A JP 2004048990 A JP2004048990 A JP 2004048990A
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JP
Japan
Prior art keywords
generator
breaker
motor
generator motor
speed
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
Application number
JP2003196049A
Other languages
Japanese (ja)
Inventor
Hiroshi Yokota
横田 浩
Kozo Ikeda
池田 孝蔵
Yoshio Yamaguchi
山口 宣雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Tokyo Electric Power Services Co Ltd
Tokyo Electric Power Co Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Mitsubishi Electric Corp
Tokyo Electric Power Services Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokyo Electric Power Co Inc, Mitsubishi Electric Corp, Tokyo Electric Power Services Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP2003196049A priority Critical patent/JP2004048990A/en
Publication of JP2004048990A publication Critical patent/JP2004048990A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a plant controller which can simplify a synchronous starter. <P>SOLUTION: This plant controller is made to accelerate the velocity of the other generator-motor until the velocity of a generator-motor to be synchronously started reaches the synchronous speed, being provided with a breaker control means which opens a transmission breaker 55 and also switches on a generator-motor 61 and a field breaker 64 when synchronously starting one generator-motor 51 between two generator-motors, and an exciting current supply means which supplies the field winding of the two generator-motors severally with exciting currents. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、揚水発電所に設置されている発電電動機の同期始動を制御するプラント制御装置に関するものである。
【0002】
【従来の技術】
図3は従来の一実施例を示す単線結線図である。発電電動機を同期始動する場合の手順を説明する。
例えば、発電電動機51bで発電電動機51aを同期始動する場合、最初に、図示せぬ制御回路が、電気ブレーキ用断路器62b,始動用断路器67b及び相反転断路器59b,60bを開放し、発電機遮断器61b及び始動用断路器66bを投入する。
【0003】
そして、図示せぬ制御回路が、電気ブレーキ用断路器62a,発電機遮断器61a,始動用断路器66a,相反転断路器59a,接地断路器56を開放し、相反転断路器60a,始動用断路器67a,特高側断路器57a及び送電遮断器55を投入する。
そして、図示せぬ制御回路が、界磁遮断器64a,64bを投入するとともに、同期始動励磁をサイリスタ励磁装置63a,63bに指令して、界磁巻線65a,65bに励磁電流を供給する。
【0004】
そして、この状態で、発電電動機51bをポンプ水車によって徐々に加速することにより、発電電動機51bから下記の電力供給ルートで発電電動機51aに電力を供給し、発電電動機51aを加速する。
・電力供給ルート
発電電動機51b→発電機遮断器61b→始動用断路器66b→始動用断路器67a→発電電動機51a
【0005】
そして、発電電動機51aの速度が同期速度に到達したら、図示せぬ制御回路が、発電電動機51aと送電線側との同期を取って、発電機遮断器61aを同期投入するとともに、発電機遮断器61bを開放する。
これにより、発電電動機51aの同期始動が完了して揚水運転に入る一方、発電電動機51bは停止する。
【0006】
【発明が解決しようとする課題】
従来のプラント制御装置は以上のように構成されているので、発電電動機を同期始動する場合(図3参照)、同期始動する発電電動機に電力を供給するための始動用断路器66a,66b,67a,67bを各発電電動機51a,51bごとに2組設置しなければならず、設備費が高価になる課題があった。
【0007】
この発明は上記のような課題を解決するためになされたもので、同期始動装置を簡略化することができるプラント制御装置を得ることを目的とする。
【0008】
【課題を解決するための手段】
この発明に係るプラント制御装置は、2台の発電電動機のうちの一方の発電電動機を同期始動する際、送電遮断器を開放するとともに、発電機遮断器及び界磁遮断器を投入する遮断器制御手段と、2台の発電電動機の界磁巻線に励磁電流をそれぞれ供給する励磁電流供給手段とを設け、同期始動する発電電動機の速度が同期速度に到達するまで他方の発電電動機の速度を加速するようにしたものである。
【0009】
【発明の実施の形態】
以下、この発明の実施の一形態を説明する。
実施の形態1.
図1はこの発明の実施の形態1によるプラント制御装置を示す単線結線図であり、図において、図3と同一符号は同一又は相当部分を示すので説明を省略する。また、図2はこの発明の実施の形態1によるプラント制御装置の動作を示すフローチャートである。
【0010】
次に、発電電動機を同期始動する場合の手順を説明する。
例えば、発電電動機51bで発電電動機51aを同期始動する場合、最初に、図示せぬ制御回路(遮断器制御手段)が、送電遮断器55,接地断路器56,始動用断路器67a,相反転断路器59a,始動用断路器67b及び相反転断路器60bを開放する(ステップST11)。
【0011】
そして、図示せぬ制御回路(遮断器制御手段)が、発電機遮断器61a,界磁遮断器64a,相反転断路器60a,特高側断路器57a,発電機遮断器61b,界磁遮断器64b,相反転断路器59b及び特高側断路器57bを投入する(ステップST12)。
【0012】
そして、図示せぬ制御回路(励磁電流供給手段)が、同期始動励磁をサイリスタ励磁装置63a,63bに指令して、界磁巻線65a,65bに励磁電流を供給する(ステップST13)。
【0013】
そして、この状態で、図示せぬ速度加速手段が、発電電動機51bをポンプ水車によって徐々に加速することにより、発電電動機51bから下記の電力供給ルートで発電電動機51aに電力を供給し、発電電動機51aを加速する(ステップST14)。
・電力供給ルート
発電電動機51b→発電機遮断器61b→相反転断路器59b→主変圧器58b→特高側断路器57b→特高側断路器57a→主変圧器58a→相反転断路器60a→発電機遮断器61a→発電電動機51a
【0014】
そして、発電電動機51aの速度が同期速度に到達したら、図示せぬ制御回路が、発電電動機51aと送電線側との同期を取って、送電遮断器55を投入するとともに、発電機遮断器61bを開放する(ステップST15)。
これにより、発電電動機51aの同期始動が完了して揚水運転に入る一方、発電電動機51bは停止する。
【0015】
以上より、この実施の形態1によれば、発電電動機の主回路52a,52bを介して同期始動する発電電動機に電力を供給するようにしたので、従来のもののように、発電電動機ごとに2組の始動用断路器66a,66b,67a,67bを設置する必要がなくなり、装置構成を簡略化することができる。
【0016】
【発明の効果】
以上のように、この発明によれば、2台の発電電動機のうちの一方の発電電動機を同期始動する際、送電遮断器を開放するとともに、発電機遮断器及び界磁遮断器を投入する遮断器制御手段と、2台の発電電動機の界磁巻線に励磁電流をそれぞれ供給する励磁電流供給手段とを設け、同期始動する発電電動機の速度が同期速度に到達するまで他方の発電電動機の速度を加速するように構成したので、従来のもののように、発電電動機ごとに2組の始動用断路器を設置する必要がなくなり、装置構成を簡略化できる効果がある。
【図面の簡単な説明】
【図1】この発明の実施の形態1によるプラント制御装置を示す単線結線図である。
【図2】この発明の実施の形態1によるプラント制御装置の同期始動のフローチャートである。
【図3】従来のプラント制御装置を示す単線結線図である。
【符号の説明】
51a,51b 発電電動機、52a,52b 主回路、53a,53b 励磁回路、54 送電線、55 送電遮断器、56 接地断路器、57a,57b特高側断路器、58a,58b 主変圧器、59a,59b,60a,60b相反転断路器、61a,61b 発電機遮断器、62a,62b 電気ブレーキ用断路器、63a,63b サイリスタ励磁装置(励磁電流制御手段)、64a,64b 界磁遮断器、65a,65b 界磁巻線、66a,66b,67a,67b 始動用断路器、68 サイリスタ始動装置。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a plant control device that controls synchronous starting of a generator motor installed in a pumped storage power plant.
[0002]
[Prior art]
FIG. 3 is a single-line diagram showing a conventional example. A procedure for synchronously starting the generator motor will be described.
For example, when the generator motor 51b is synchronously started by the generator motor 51b, first, a control circuit (not shown) opens the electric brake disconnector 62b, the start disconnector 67b, and the phase inversion disconnectors 59b and 60b to generate power. The breaker 61b and the starting disconnector 66b are turned on.
[0003]
Then, a control circuit (not shown) opens the electric brake disconnector 62a, the generator breaker 61a, the starting disconnector 66a, the phase inversion disconnector 59a, and the grounding disconnector 56, and opens the phase inversion disconnector 60a for starting. The disconnecting switch 67a, the extra high side disconnecting switch 57a, and the power transmission breaker 55 are turned on.
Then, a control circuit (not shown) turns on the field breakers 64a and 64b, and instructs the thyristor exciters 63a and 63b to perform synchronous starting excitation to supply an exciting current to the field windings 65a and 65b.
[0004]
Then, in this state, by gradually accelerating the generator motor 51b by the pump turbine, power is supplied from the generator motor 51b to the generator motor 51a through the following power supply route, and the generator motor 51a is accelerated.
Power supply route generator motor 51b → generator breaker 61b → starting disconnector 66b → starting disconnector 67a → generator motor 51a
[0005]
Then, when the speed of the generator motor 51a reaches the synchronous speed, a control circuit (not shown) synchronizes the generator motor 51a with the transmission line side, synchronously turns on the generator breaker 61a, and turns on the generator breaker. Release 61b.
Thereby, the synchronous start of the generator motor 51a is completed and the pumping operation starts, while the generator motor 51b stops.
[0006]
[Problems to be solved by the invention]
Since the conventional plant control device is configured as described above, when the generator motor is synchronously started (see FIG. 3), the starting disconnectors 66a, 66b, 67a for supplying power to the synchronously started generator motor. , 67b must be provided for each of the generator motors 51a, 51b.
[0007]
The present invention has been made to solve the above-described problems, and has as its object to obtain a plant control device capable of simplifying a synchronous starting device.
[0008]
[Means for Solving the Problems]
A plant control device according to the present invention, when synchronously starting one of two generator motors, opens a power transmission breaker and switches on a generator breaker and a field breaker. Means and exciting current supply means for supplying exciting current to the field windings of the two generator motors, respectively, to accelerate the speed of the other generator motor until the speed of the synchronous motor that starts synchronously reaches the synchronous speed. It is intended to be.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described.
Embodiment 1 FIG.
FIG. 1 is a single-line diagram showing a plant control apparatus according to Embodiment 1 of the present invention. In the figure, the same reference numerals as in FIG. FIG. 2 is a flowchart showing the operation of the plant control device according to the first embodiment of the present invention.
[0010]
Next, a procedure for synchronously starting the generator motor will be described.
For example, when the generator motor 51b is synchronously started by the generator motor 51b, first, a control circuit (not shown) (circuit breaker control means), which is not shown, transmits the power transmission breaker 55, the grounding disconnector 56, the starting disconnector 67a, The switch 59a, the starting disconnecting switch 67b, and the phase inversion disconnecting switch 60b are opened (step ST11).
[0011]
A control circuit (circuit breaker control means) (not shown) includes a generator breaker 61a, a field breaker 64a, a phase inversion disconnector 60a, an extra high side disconnector 57a, a generator breaker 61b, and a field breaker. 64b, the phase inversion disconnector 59b, and the extra high disconnector 57b are turned on (step ST12).
[0012]
Then, a control circuit (excitation current supply means) (not shown) instructs the thyristor excitation devices 63a and 63b to perform synchronous start excitation, and supplies an excitation current to the field windings 65a and 65b (step ST13).
[0013]
In this state, the speed accelerating means (not shown) gradually accelerates the generator motor 51b by the pump turbine to supply power from the generator motor 51b to the generator motor 51a through the following power supply route, and the generator motor 51a Is accelerated (step ST14).
Power supply route generator motor 51b → generator breaker 61b → phase inversion disconnector 59b → main transformer 58b → extra high side disconnector 57b → extra high side disconnector 57a → main transformer 58a → phase inversion disconnector 60a → Generator breaker 61a → Generator motor 51a
[0014]
Then, when the speed of the generator motor 51a reaches the synchronous speed, a control circuit (not shown) synchronizes the generator motor 51a with the power transmission line side, turns on the power transmission breaker 55, and turns on the generator breaker 61b. Release (step ST15).
Thereby, the synchronous start of the generator motor 51a is completed and the pumping operation starts, while the generator motor 51b stops.
[0015]
As described above, according to the first embodiment, electric power is supplied to the generator motors that start synchronously via the main circuits 52a and 52b of the generator motors. It is not necessary to install the starting disconnectors 66a, 66b, 67a, 67b, and the device configuration can be simplified.
[0016]
【The invention's effect】
As described above, according to the present invention, when synchronously starting one of the two generator motors, the power transmission breaker is opened, and the generator breaker and the field breaker are closed. Generator control means and excitation current supply means for supplying excitation current to the field windings of the two generator motors, respectively, and the speed of the other generator motor is controlled until the speed of the generator motor synchronously starts reaches the synchronous speed. , It is not necessary to install two sets of starting disconnectors for each generator motor as in the prior art, which has the effect of simplifying the device configuration.
[Brief description of the drawings]
FIG. 1 is a single-line diagram showing a plant control device according to a first embodiment of the present invention.
FIG. 2 is a flowchart of a synchronous start of the plant control device according to the first embodiment of the present invention.
FIG. 3 is a single-line diagram showing a conventional plant control device.
[Explanation of symbols]
51a, 51b generator motor, 52a, 52b main circuit, 53a, 53b excitation circuit, 54 transmission line, 55 power transmission breaker, 56 ground disconnector, 57a, 57b extra high side disconnector, 58a, 58b main transformer, 59a, 59b, 60a, 60b phase inversion disconnector, 61a, 61b generator breaker, 62a, 62b disconnector for electric brake, 63a, 63b thyristor exciting device (excitation current control means), 64a, 64b field breaker, 65a, 65b field winding, 66a, 66b, 67a, 67b starting disconnector, 68 thyristor starting device.

Claims (1)

互いに並列に接続された2台の発電電動機の主回路にそれぞれ設置された発電機遮断器と、上記2台の発電電動機の主回路を電力系統に連繋する送電遮断器と、上記2台の発電電動機の励磁回路にそれぞれ設置された界磁遮断器と、上記2台の発電電動機のうちの一方の発電電動機を同期始動する際、上記送電遮断器を開放するとともに、上記発電機遮断器及び界磁遮断器を投入する遮断器制御手段と、上記2台の発電電動機の界磁巻線に励磁電流をそれぞれ供給する励磁電流供給手段と、同期始動する発電電動機の速度が同期速度に到達するまで他方の発電電動機の速度を加速する速度加速手段とを備えたプラント制御装置。A generator breaker installed in a main circuit of two generator motors connected in parallel with each other, a power transmission breaker connecting the main circuits of the two generator motors to a power system, and When the field circuit breakers installed in the excitation circuit of the motor and one of the two generator motors are started synchronously, the transmission breaker is opened, and the generator breaker and the field generator are switched off. Circuit breaker control means for turning on the magnetic circuit breaker, excitation current supply means for supplying excitation current to the field windings of the two generator motors, respectively, and until the speed of the generator motor synchronously starting reaches the synchronous speed. A plant control device comprising: a speed accelerating means for accelerating the speed of the other generator motor.
JP2003196049A 2003-07-11 2003-07-11 Plant controller Pending JP2004048990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP24633695A Division JP3490197B2 (en) 1995-09-25 1995-09-25 Plant control device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102195549A (en) * 2010-03-19 2011-09-21 株式会社东芝 Synchronous starting control device of generator motors
CN112003310A (en) * 2020-09-24 2020-11-27 武汉大学 A coordinated control method of the governor and the converter in the process of changing the working conditions of a variable-speed pumping-storage unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102195549A (en) * 2010-03-19 2011-09-21 株式会社东芝 Synchronous starting control device of generator motors
CN102195549B (en) * 2010-03-19 2013-09-18 株式会社东芝 Synchronous starting control device of generator motors
CN112003310A (en) * 2020-09-24 2020-11-27 武汉大学 A coordinated control method of the governor and the converter in the process of changing the working conditions of a variable-speed pumping-storage unit
CN112003310B (en) * 2020-09-24 2022-04-26 武汉大学 A coordinated control method of the governor and the converter in the process of changing the working conditions of a variable-speed pumping-storage unit

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