JPS5970200A - Control system for generator - Google Patents
Control system for generatorInfo
- Publication number
- JPS5970200A JPS5970200A JP57179718A JP17971882A JPS5970200A JP S5970200 A JPS5970200 A JP S5970200A JP 57179718 A JP57179718 A JP 57179718A JP 17971882 A JP17971882 A JP 17971882A JP S5970200 A JPS5970200 A JP S5970200A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- compensation
- generator
- cross current
- line resistance
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は交流発電機の制御方式、特に線路抵抗または
横流（交流発電機が並行運転される場合に発電機間を流
れる電流）による電圧特性の補償方式に閃する。DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a control method for an alternating current generator, particularly to a method for compensating voltage characteristics due to line resistance or cross current (current flowing between alternating current generators when they are operated in parallel).
一般に、発ｎｔ機システムにおいては、負荷が遠方にあ
る場合でも負荷の受電端電圧を一定に制御すべくライン
（線路）の電圧降下を補償すること、または横流によっ
て生じる影響を抑止することが望ましい。In general, in a starter system, it is desirable to compensate for line voltage drops in order to control the voltage at the receiving end of the load at a constant level even when the load is located far away, or to suppress the effects caused by cross currents. .
第１図は交流光ｍ機の一般的な電圧検ｔｉｊ方式を示す
構成図、第２図は線路抵抗、横流による発電機出力電圧
特性を示す特性図、第３図は発電機電圧１ｍ流と力率と
の関係を示すベクトル図である。Figure 1 is a configuration diagram showing the general voltage detection tij method of AC optical m generators, Figure 2 is a characteristic diagram showing generator output voltage characteristics due to line resistance and cross current, and Figure 3 is a diagram showing generator voltage 1m current and FIG. 3 is a vector diagram showing the relationship with the power factor.
すなわち、従来は、発電機１の出力側において電流変成
器２．３、ｍ圧変威儀４および抵抗５゜６等を用いて負
荷の力率、大きさに応じた電圧をベクトル合成した後、
整流器７により整流して直流信号とし、これを検出電圧
としてｆｊｌ圧調節器（ＡＶＲ，）に与え、これにより
電圧制御を行なうようにしている。この場合、検出電圧
の特性は基２図〜の点線の如くなるので、発電機出方特
性は同図囚の実線の如くなるように調整することにより
ラインドロップを補償する。一方、′発電機の並行運転
時に該発電機間に流れる検流によって、発電機の検出電
圧は第２図０の点線の如く変化するので、第１図の点線
で示す如くその結線を変更し、第２図（ハ）の実線で示
される特性またはｍ ３ ｒ！Ｉの如き関係となるよう
に制御が行なわれていた。なお、第３図ＧＡ） 、 （
Ｂ） 、 （Ｃ）はそれぞれ進み力率、力率＝１および
遅れ力率の場合を示し、力率の進み、遅れに応じて補償
分ｖｃを図の如く与えることにより出力電圧（■ｔｒ
ｔ ｖｒｓ ｅ Ｖｓｔ ； 貯量電圧）に第２図０の
実線で示される如き垂下特性を持たせるようにしている
。つまり、従来方式はラインドロップ補償か横流補償の
いずれかに応じてその都度結綜替えをしなければならな
いという煩雑さがあった。That is, conventionally, on the output side of the generator 1, a current transformer 2.3, an m-pressure converter 4, a resistor 5.6, etc. are used to vector-synthesize voltages according to the power factor and magnitude of the load, and then,
The rectifier 7 rectifies the signal into a DC signal, which is applied as a detection voltage to the fjl pressure regulator (AVR), thereby controlling the voltage. In this case, the characteristics of the detected voltage are as shown by the dotted lines in Figures 2 to 3, so the line drop is compensated for by adjusting the generator output characteristics as shown by the solid lines in the figures. On the other hand, when the generators are operated in parallel, the detected voltage of the generator changes as shown by the dotted line in Figure 2 due to the galvanic current flowing between the generators, so the connection should be changed as shown by the dotted line in Figure 1. , the characteristic shown by the solid line in FIG. 2(c) or m 3 r! Control was carried out so that the relationship was as shown in I. In addition, Fig. 3 GA), (
B) and (C) respectively show the cases of leading power factor, power factor = 1, and lagging power factor, and by giving the compensation amount vc according to the leading and lagging power factor as shown in the figure, the output voltage (■tr
t vrs e Vst (storage voltage) is made to have a drooping characteristic as shown by the solid line in FIG. In other words, the conventional system has the trouble of having to change the heald every time depending on whether it is line drop compensation or cross current compensation.
この発明はこの点に鑑みてなされたもので、レインドロ
ップおよび横流補償が容易で、しかも操作、保守が容易
な制御方式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 this point, and an object of the present invention is to provide a control system that can easily compensate for raindrops and cross currents, and is also easy to operate and maintain.
その特徴は、交流発電機の検出電圧にもとづいてライン
ドロップ補償演算または横流補償演算のいずれかを行な
う演算装置を設けるとともに、該演算装置にいずれの演
算を行なわせるかを指示するスイッチを設け、該スイッ
チによりいずれの補償を行なうかを選択して発ＩＥ機を
制御するようにした点にある。Its features include a calculation device that performs either line drop compensation calculation or cross current compensation calculation based on the detected voltage of the alternator, and a switch that instructs the calculation device to perform either calculation. The point is that the source IE is controlled by selecting which compensation to perform using the switch.
以下、この発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
第４図はこの発明の実施例を示すブロック図である。な
お、第４図において、８は設定器、９は係数器、１０は
スイッチであり、該スイッチ１０はラインドロップ補償
のときのみオンになるものである。FIG. 4 is a block diagram showing an embodiment of the invention. In FIG. 4, 8 is a setting device, 9 is a coefficient multiplier, and 10 is a switch, which is turned on only during line drop compensation.
したがって、ラインドロップ補償を行なう場合にはスイ
ッチ１０が閉じられ、これにより設定電圧（Ｖｓ）と検
出電圧（ＶＧ）との偏差ΔＶ（Ｖｓ−Ｖａ）に、ＶＧ−
ｖｓの差を係数器９にてに倍した値（−にΔＶ）が加算
された量（（１−Ｋ）ｘΔＶ）が出力され、この出力に
もとづいて電圧制御が行なわれる。一方、検流補償を行
なう場合はスイッチ１０は操作されないので、電圧調節
器（ＡＶＲ）へはΔ■なる量が与えられて制御が行なわ
れる。Therefore, when performing line drop compensation, the switch 10 is closed, and as a result, the deviation ΔV (Vs - Va) between the set voltage (Vs) and the detected voltage (VG) is changed to VG -
A value ((1-K) x ΔV) obtained by multiplying the difference between VS by the coefficient multiplier 9 (- and ΔV) is output, and voltage control is performed based on this output. On the other hand, when performing galvanometric compensation, the switch 10 is not operated, so the voltage regulator (AVR) is given a quantity Δ■ for control.
第５図は第４図の具体的な構成例を示すもので、−＊４
ｖ！Ｊの係数器′９は、第５図では演算増幅器１２と可
変抵抗器１５からなる部分に相当し、そのゲインには該
可変抵抗器１５によって任意に選定することができる。Figure 5 shows a specific configuration example of Figure 4, -*4
v! The coefficient unit '9 of J corresponds to a portion consisting of an operational amplifier 12 and a variable resistor 15 in FIG. 5, and its gain can be arbitrarily selected by the variable resistor 15.
つまり、設定値Ｖｓと検出電圧値ｖＧとの偏差はそのま
＼演算増幅器１４−１与えられるのに対し、検出電圧値
ＶＧと設定値Ｖｓとの差を演算増幅器１２にてに倍した
値は、スイッチ１０のオン、オフによって演算増幅器１
４へ与えられたり、与えられなかったりして、結局第４
図と同等の機能を果すものである。なお、１３は入出力
比が１対１のバッファアンプ為１１はスイッチ１０を制
御するための外部スイッチである。In other words, the deviation between the set value Vs and the detected voltage value vG is given as is to the operational amplifier 14-1, whereas the value obtained by multiplying the difference between the detected voltage value VG and the set value Vs by the operational amplifier 12 is , the operational amplifier 1 is turned on and off by turning on and off the switch 10.
Sometimes it was given to 4th, sometimes it wasn't given, and in the end it was given to 4th.
It has the same function as a diagram. Note that 13 is a buffer amplifier with an input/output ratio of 1:1, and 11 is an external switch for controlling the switch 10.
このようにして、単にスイッチ１ｏをオン、オフするだ
けでラインドロップ、横流補償のいずれかを任意に選択
して制御を行なうことができる。In this way, it is possible to arbitrarily select and control either line drop or cross current compensation simply by turning on and off the switch 1o.
以上のように、この発明によれば、発電機の検出電圧に
もとづいて線路抵抗降下補償または横流補償演算を行な
う演算手段に対していずれの補償演算を行なわせるかを
指示する選択手段を設けるだけの簡単な構成により、線
路抵抗降下補償または検流補償を行なうことができるの
で、従来の如く結線変更の必要がなく、シたがって操作
または保守が極めて容易になるという効果をもたらすも
のである。As described above, according to the present invention, only the selection means is provided for instructing the calculation means for performing line resistance drop compensation or cross current compensation calculation to perform either compensation calculation based on the detected voltage of the generator. With this simple configuration, line resistance drop compensation or galvanometric current compensation can be performed, so there is no need to change the wiring as in the past, and therefore operation and maintenance are extremely easy.
第１図は発電機における一般的な電圧検出方式を示す構
成図、第２図は線路抵抗、横流による電圧特性を示す特
性図、第３図は電圧、電流と力率との関係を示すベクト
ル図、第４ｖ！Ｊはこの発明の概略実施例を示すブロッ
ク図、第５図は第４図の具体例を示す構成図である。
符号説明
１・・・・・・発電機、２，３・・面電流変成器、４・
・曲電圧変成器、５，６・・曲抵抗、７・・曲整流器、
８・・山・設定器、９・・曲係数器、１０＊１１・・・
・・・スイッチ、１２〜１４・・・・・・演算増幅器、
１５・・曲可変抵抗器
代理人 弁理士 並 木 昭 夫
代理人 弁理士 松 崎 清
・′汀１図
＋Ａ） （Ｂ
）第３図
ｔＡ４図
・（＋ ５ １７１Figure 1 is a configuration diagram showing a general voltage detection method in a generator, Figure 2 is a characteristic diagram showing voltage characteristics due to line resistance and cross current, and Figure 3 is a vector showing the relationship between voltage, current, and power factor. Figure, 4th v! J is a block diagram showing a schematic embodiment of the present invention, and FIG. 5 is a block diagram showing a specific example of FIG. 4. Code explanation 1... Generator, 2, 3... Surface current transformer, 4...
- Curved voltage transformer, 5, 6... Curved resistance, 7... Curved rectifier,
8... Mountain setting device, 9... Curvature coefficient device, 10*11...
...Switch, 12-14...Operation amplifier,
(B
) Figure 3 tA4 Figure (+ 5 171
Claims (1)
々にその出力電圧を検出する電圧検出手段と、該出力電
圧の線路抵抗降下または横流による影響を補償すべく線
路抵抗降下補償演算または横流補償演算を行なう演算手
段と、該演算手段にいずれの補償演算を行なわせるかを
指示する選択手段とを設け、該選択手段からの指令にも
とづいて線路抵抗降下または横流による影響を補償して
発電機出力電圧を制御することを特徴とする発電機制御
方式。Voltage detection means for detecting the output voltage of each of a plurality of generators installed in parallel on an infinite bus through a line, and a line resistance drop compensation calculation for compensating for the influence of line resistance drop or cross current on the output voltage. Alternatively, a calculation means for performing a cross current compensation calculation and a selection means for instructing the calculation means to perform any compensation calculation are provided, and the influence of line resistance drop or cross current is compensated for based on a command from the selection means. A generator control method characterized by controlling the generator output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57179718A JPS5970200A (en) | 1982-10-15 | 1982-10-15 | Control system for generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57179718A JPS5970200A (en) | 1982-10-15 | 1982-10-15 | Control system for generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5970200A true JPS5970200A (en) | 1984-04-20 |
| JPH0463638B2 JPH0463638B2 (en) | 1992-10-12 |
Family
ID=16070653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57179718A Granted JPS5970200A (en) | 1982-10-15 | 1982-10-15 | Control system for generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5970200A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50122812U (en) * | 1974-03-22 | 1975-10-07 | ||
| JPS5571131A (en) * | 1978-11-24 | 1980-05-29 | Mitsubishi Electric Corp | Cross current compensator |
-
1982
- 1982-10-15 JP JP57179718A patent/JPS5970200A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50122812U (en) * | 1974-03-22 | 1975-10-07 | ||
| JPS5571131A (en) * | 1978-11-24 | 1980-05-29 | Mitsubishi Electric Corp | Cross current compensator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0463638B2 (en) | 1992-10-12 |
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