JPS62236400A - Controller for synchronous generator - Google Patents
Controller for synchronous generatorInfo
- Publication number
- JPS62236400A JPS62236400A JP61078299A JP7829986A JPS62236400A JP S62236400 A JPS62236400 A JP S62236400A JP 61078299 A JP61078299 A JP 61078299A JP 7829986 A JP7829986 A JP 7829986A JP S62236400 A JPS62236400 A JP S62236400A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power
- power system
- synchronous generator
- δpe
- 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
- 230000001360 synchronised effect Effects 0.000 title claims description 31
- 230000005284 excitation Effects 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 abstract description 6
- 238000004804 winding Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 230000002411 adverse Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、電力系統に接続された同期機の励磁制御に係
るものであり、特に同期機の励磁系に通常の電圧偏差信
号以外のイ１加的な制御信号を加えて、これを制御し同
ＩＩ機の安定度、ひいては電力系統全体の安定度を向上
させることのできる同期発電機の制御装置に関するもの
である。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to excitation control of a synchronous machine connected to an electric power system, and in particular, the present invention relates to excitation control of a synchronous machine connected to an electric power system. The present invention relates to a control device for a synchronous generator that can add an additional control signal other than a deviation signal and control the signal to improve the stability of the II machine and, by extension, the stability of the entire power system.
（従来の技術）
従来の電力系統の安定化装置（以下ＰＳＳと記す）にあ
っては同期機の励磁装置に付加的な制御信号として発電
出力から電力偏差信号が印加され、同ＩＩ機の界磁巻線
のの励磁電流を制ｍする。(Prior art) In a conventional power system stabilizing device (hereinafter referred to as PSS), a power deviation signal is applied from the power generation output as an additional control signal to the excitation device of the synchronous machine, and the field of the second machine is Controls the excitation current of the magnetic winding.
このようなＰＳＳが有効性を発揮するのは、同期機が比
較的長い送電線弁して電力系統へ送電するＪ：うな場合
に顕著である。Such a PSS is particularly effective in cases where a synchronous machine transmits power to the power grid via a relatively long transmission line valve.
（発明が解決しようとする問題点）
しかしながら、一般の電力系統においては、同期機の設
置箇所や負荷特性によってその効果が左右される。即ち
、ＰＳＳは励磁制御によって発電機出力を増減さＵ制動
効果をもたらすものであるため、同期機の電圧−電力特
性によってその特性が大きく左右される。(Problems to be Solved by the Invention) However, in a general power system, the effectiveness of the synchronous machine depends on the installation location and load characteristics of the synchronous machine. That is, since the PSS increases or decreases the generator output through excitation control and brings about a U braking effect, its characteristics are greatly influenced by the voltage-power characteristics of the synchronous machine.
従って、負荷の特性や対象同門機の設置箇所、系統の運
転状態などによって、ＰＳＳにて逆動作で制御すること
になり、かえって不安定側に作用し、電力系統の安定度
が維持できなくなる可能性がある。Therefore, depending on the characteristics of the load, the installation location of the target classmate machine, the operating status of the system, etc., the PSS will control the operation in the opposite direction, which may even work on the unstable side and make it impossible to maintain the stability of the power system. There is sex.
本発明は、上記に鑑みなされたもので、負荷特性などに
よるＰＳＳの逆作用を未然に防止し、所定の制動効果を
維持することのできる同期発電機の制御装置を提供する
ことを目的とするものである。The present invention has been made in view of the above, and an object of the present invention is to provide a control device for a synchronous generator that can prevent adverse effects of PSS due to load characteristics, etc., and maintain a predetermined braking effect. It is something.
（発明の構成）
（問題点を解決Ｊるための手段）
同期発電機と電力系統が連系され、発電電圧より自動電
圧調整器を介して同期発電機の励磁装置を制御するもの
において、上記同期発電機の出力から電圧−電力特性を
判別し、この結果に基づいて上記自動電圧調′ｌ１１ｉ
器への制御信号の一部とする、ｉ Ｚ （！：ｆｉ：
’ｌ’５１″−５″−６・（作 用）
上記［目的を達成するために本発明では同期機の接続さ
れた系統の電圧−電力特性を判別することにより、未然
に電力系統の安定化装置の逆作用を防止することができ
る。(Structure of the Invention) (Means for Solving the Problems) In a system in which a synchronous generator and a power system are interconnected, and an excitation device of the synchronous generator is controlled from the generated voltage via an automatic voltage regulator, the above-mentioned The voltage-power characteristics are determined from the output of the synchronous generator, and the automatic voltage adjustment is performed based on this result.
i Z (!:fi:
'l'51''-5''-6・(Function) In order to achieve the above object, the present invention stabilizes the power system by determining the voltage-power characteristics of the system to which the synchronous machine is connected. It is possible to prevent adverse effects of the conversion device.
（実施例）
以下本発明に係る同期発電機の制御装置の一実施例を第
１図に示す。同期機１は主変圧器２を通して電力系統３
へ接続されている。同期ｌａ１の出力回路の電圧、電流
をそれぞれ計器用変圧器４、変流器５により検出し、電
圧−電力変換器６によりΔＰｅ／ΔＶｙを作り出し電力
系統の安定化装置ＰＳＳ７へ入力し、安定化のための補
償関数Ｗ（１）を通して自動電圧調整器（以下ＡＶＲと
記す）８へ入力する。ＡＶＲ８ではこの信号と通常の電
圧偏差信号とが重畳されて、その制御回路を通して励ｒ
ｉｔ１１装置９を制御し同期機１の界磁巻線１０の励磁
電流を制御する。(Example) An example of a control device for a synchronous generator according to the present invention is shown in FIG. 1 below. Synchronous machine 1 connects power grid 3 through main transformer 2
connected to. The voltage and current of the output circuit of the synchronous la1 are detected by the instrument transformer 4 and the current transformer 5, respectively, and the voltage-to-power converter 6 generates ΔPe/ΔVy, which is input to the power system stabilizer PSS7 and stabilized. is inputted to an automatic voltage regulator (hereinafter referred to as AVR) 8 through a compensation function W(1) for . In the AVR8, this signal and the normal voltage deviation signal are superimposed, and the excitation voltage is output through the control circuit.
It11 controls the device 9 to control the excitation current of the field winding 10 of the synchronous machine 1.
電圧−電力特性判別器１５はΔＶｇおよびΔｐｅを検出
し、ΔＰｅ／Δ■９を演算し、かつその値に応じてΔｐ
ｅの符号を切替えＰＳＳへ出力するものでおる。The voltage-power characteristic discriminator 15 detects ΔVg and Δpe, calculates ΔPe/Δ■9, and calculates Δp according to the value.
It switches the sign of e and outputs it to the PSS.
次に上記のように構成した本発明の作用について説明す
る。一般に電力系統においては微小変動が常時存在して
おり、電圧−電力判別器１５により、同期機１の運転状
態に対応したΔＰｅ／ΔＶｔＪを判別する。このΔＰｅ
／ΔＶ９の値により以下の如く電力系統の安定化装置Ｐ
ＳＳの設定を切替える。Next, the operation of the present invention configured as described above will be explained. Generally, minute fluctuations always exist in a power system, and the voltage-power discriminator 15 discriminates ΔPe/ΔVtJ corresponding to the operating state of the synchronous machine 1. This ΔPe
/ΔV9, the power system stabilizer P is determined as follows:
Change SS settings.
■ ΔＰｅ／ΔＶｇ＞α〉０
■ ΔＰｅ／Δｖｙ＜βくＯ
■ βくΔＰｅ／ΔＶ’Ｆ＜α
■の状態の場合には、−ΔＰｅとしてＰＳＳ７へ入力す
る。■ ΔPe/ΔVg>α>0 ■ ΔPe/Δvy<β×O ■ β×ΔPe/ΔV'F<α (2) Input to the PSS7 as -ΔPe.
■の状態では逆作用となるため＋ΔＰｅとしてＰＳＳ７
へ入力する。In the state of ■, there is a reverse effect, so PSS7 is set as +ΔPe.
Enter.
■の状態ではＰＳＳ７の効果が充分発揮できないと予想
されるためＰＳＳ７をロックする。In the state (2), it is predicted that the effect of PSS7 will not be fully exhibited, so PSS7 is locked.
以上により、同期機１の接続された系統の電圧−電力特
性を判別することにより未然にＰＳＳ７の逆作用を防止
することができる。As described above, by determining the voltage-power characteristics of the system to which the synchronous machine 1 is connected, the adverse effect of the PSS 7 can be prevented.
なお、本発明では、ΔＰｅ／ΔＶびの小さな領域では電
力系統の安定化装ｍＰｓｓ７をロックするようにしたが
、これはＰＳＳ７を付加しない場合にも充分安定である
場合であって、そうでない場合には、上記条件を更に分
割し、
■′ α〉ΔＰｅ／ΔＶｇ＞０
■” βくΔＰｅ／ΔＶ９＜０
とすることにより、■′では、−ΔＰ ｅ ＠： ＰＳ
Ｓ７へ入力し、ＰＳＳ７のゲインを強化する。同様に■
“では＋ΔＰｅをＰＳＳ７へ入力しＰＳＳ７のゲインを
切替え、強化することにより、ＰＳＳ７を有効に活用す
ることも可能である。In addition, in the present invention, the power system stabilization device mPss7 is locked in a region where ΔPe/ΔV deviation is small, but this only applies when the stability is sufficient even when PSS7 is not added, and when it is not. By further dividing the above condition and setting ■′ α〉ΔPe/ΔVg＞0 ■” β ΔPe/ΔV9<0, in ■′, -ΔP e @: PS
Input to S7 and strengthen the gain of PSS7. Similarly ■
"In this case, it is also possible to effectively utilize PSS7 by inputting +ΔPe to PSS7 and switching and strengthening the gain of PSS7.
−＠無限大母線系統に近い場合には、発電機電圧の土性
が電力を増加させる、即ち、２Ｐ、／２Ｖｔ、＞Ｏとな
り所定の効果が１ｑられる。- @ In the case close to the infinite bus system, the characteristic of the generator voltage increases the power, ie, 2P, /2Vt, >O, and the predetermined effect is 1q.
一方、負荷端の近傍に設置された同期機１にＰＳＳを適
用する場合について第２図により説明する。図において
大電源１１が送電線１２を介して負荷１３へ接続されて
おり、負荷１３の近傍に同期機１４が設置されている場
合を考える。このときの電力のバランスは次式で表わさ
れる。On the other hand, the case where PSS is applied to the synchronous machine 1 installed near the load end will be explained with reference to FIG. 2. In the figure, consider a case where a large power source 11 is connected to a load 13 via a power transmission line 12, and a synchronous machine 14 is installed near the load 13. The power balance at this time is expressed by the following equation.
ＰＡ 十ＰＦＳ ＝ＰＬ ・・・０）
ここで、Ｂ点の電圧をＶＦＳとし、その微小変動による
電圧−出力特性は次式で与えられる。PA 10PFS = PL...0)
Here, the voltage at point B is VFS, and the voltage-output characteristics due to minute fluctuations are given by the following equation.
２ Ｐ ｃ、 ／ ２ Ｖ Ｂ＝ ２ Ｐ Ａ ／ ２
Ｖ Ｂ十２ＰＢ／２ＶＢ ・・・■
いま、負荷特性を２ＰＬ／２ＶＢ＝Ｏと仮定すると、大
電源１１の特性は、一般に２ Ｐ Ａ ／ ２ Ｖ Ｂ
〉０と考えられるため、■式より、２ＰＢ／２Ｖａ ＜
Ｑとなる。2 P c, / 2 V B = 2 P A / 2
V B 12PB/2VB...■ Now, assuming that the load characteristics are 2PL/2VB=O, the characteristics of the large power supply 11 are generally 2P A / 2V B
〉0, so from formula ■, 2PB/2Va <
It becomes Q.
ここで、従来のＰＳＳでは、前述の如＜２Ｐ。Here, in the conventional PSS, <2P as described above.
／２Ｖｔ＞Ｏが前提となっているため、同期機１４へＰ
ＳＳを設置した場合には、逆動作を起し端子電圧Ｖｔを
上げることにより出力が低下し、更にその結果端子電圧
を上行させるように制御するため、かえって不安定側に
作用することになり、電力系統の安定度が維持できなく
なる可能性があつ、ｉ・ た。しかし、本発明では
電力偏差信号の代りに同期機の端子電圧信号と電力信号
を結合させることににりそのようなことはなくなり、電
力系統の安定度を維持させることができる。/2Vt>O is assumed, so P to synchronous machine 14
When SS is installed, the output decreases by causing reverse operation and increasing the terminal voltage Vt, and as a result, the terminal voltage is controlled to increase, which makes it more unstable. There is a possibility that the stability of the power system will not be maintained. However, in the present invention, by combining the terminal voltage signal of the synchronous machine and the power signal instead of the power deviation signal, this problem is eliminated and the stability of the power system can be maintained.
（発明の効果）
以上述べたように本発明は、同期機の端子電圧信号と電
力信号を結合させることにより、負荷特性などによる電
力系統の安定化装置の逆作用を未然に防止し、電力系統
を安定化させ所定の制動効果を維持することのできる同
期発電機の制ｍ装置を提供することができる。(Effects of the Invention) As described above, the present invention prevents the reverse effect of the power system stabilizing device due to load characteristics etc. by combining the terminal voltage signal of the synchronous machine and the power signal, and It is possible to provide a damping device for a synchronous generator that can stabilize m and maintain a predetermined braking effect.
第１図は本発明に係る電力系統の安定化装置ＰＳＳの一
実施例を示すブロック図、第２図は電力系統の構成例を
示す系統図である。
１・・・同ｔＦｌａ ２・・・主変圧器６
・・・電圧−電力特性判別器
７・・・安定化装置 ８・・・内勤電圧調整器１
０・・・励磁装置
代理人 弁理士 則 近 恵 佑
同 三俣弘文FIG. 1 is a block diagram showing an embodiment of a power system stabilizing device PSS according to the present invention, and FIG. 2 is a system diagram showing an example of the configuration of the power system. 1...Same tFla 2...Main transformer 6
... Voltage-power characteristic discriminator 7 ... Stabilizer 8 ... Office voltage regulator 1
0... Excitation device agent Patent attorney Nori Chika Yudo Hirofumi Mitsumata
Claims (2)
自動電圧調整器を介して同期発電機の励磁装置を制御す
るものにおいて、前記同期発電機の出力から電圧−電力
特性を判別し、この結果に基づいて前記自動電圧調整器
への制御信号の一部とすることを特徴とする同期発電機
の制御装置。(1) In a system in which a synchronous generator and a power system are interconnected and the excitation device of the synchronous generator is controlled from the generated voltage via an automatic voltage regulator, the voltage-power characteristics are determined from the output of the synchronous generator. A control device for a synchronous generator, characterized in that the result is used as part of a control signal to the automatic voltage regulator.
偏差信号ΔＶｇとの比ΔＰｅ／ΔＶｇを求め、その値に
応じてΔＰｅの極性を切替えることを特徴とする特許請
求の範囲第１項記載の同期発電機の制御装置。(2) A ratio ΔPe/ΔVg between the power deviation signal ΔPe and the voltage deviation signal ΔVg is determined as the voltage-power characteristic, and the polarity of ΔPe is switched according to the determined value. Control device for synchronous generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61078299A JPS62236400A (en) | 1986-04-07 | 1986-04-07 | Controller for synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61078299A JPS62236400A (en) | 1986-04-07 | 1986-04-07 | Controller for synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62236400A true JPS62236400A (en) | 1987-10-16 |
Family
ID=13658045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61078299A Pending JPS62236400A (en) | 1986-04-07 | 1986-04-07 | Controller for synchronous generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62236400A (en) |
-
1986
- 1986-04-07 JP JP61078299A patent/JPS62236400A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0691748B2 (en) | Multiple output energy converter | |
| US4578743A (en) | Converter control system having stable power transfer in the presence of decreased input AC voltage | |
| JPS62236400A (en) | Controller for synchronous generator | |
| JPH01278265A (en) | Control circuit for positive/negative output switching power source | |
| JP2913175B1 (en) | Automatic voltage regulator for synchronous or brushless synchronous generators | |
| JP3284613B2 (en) | Control circuit of PWM converter | |
| JP3228033B2 (en) | Control method of DC intermediate voltage of reactive power compensator | |
| SU1376211A1 (en) | Apparatus for controlling excitation of synchronous generator | |
| JP2592523B2 (en) | Power supply control device | |
| JPH061988B2 (en) | Current control method for current source thyristor inverter | |
| JPH0260459A (en) | Method of controlling dc/dc converter | |
| JPH02228299A (en) | Method of regulating output voltage of variable speed generator and the regulator | |
| JP3264706B2 (en) | Superconducting power controller | |
| SU721890A1 (en) | Arrangement for automatic control of synchronous machine excitation | |
| RU1793514C (en) | Transformer-thyristor compensator of reactive power | |
| JPH0432633B2 (en) | ||
| JPH04101699A (en) | Power supply voltage controller | |
| SU605300A1 (en) | Transistor multicascade converter | |
| JPS60153524A (en) | Circuit system of stabilized power supply | |
| JPS61207190A (en) | Speed controller for induction motor | |
| JPS6225305A (en) | Stabilized power source | |
| JPS63144798A (en) | Excitation controller for synchronous machine | |
| JPH057956B2 (en) | ||
| PL157108B1 (en) | A system for controlling the synchronic generator with a.c. exciter | |
| JPS62180409A (en) | Series stabilized control type power supply device |