JPH0343873B2 - - Google Patents
Info
- Publication number
- JPH0343873B2 JPH0343873B2 JP55032229A JP3222980A JPH0343873B2 JP H0343873 B2 JPH0343873 B2 JP H0343873B2 JP 55032229 A JP55032229 A JP 55032229A JP 3222980 A JP3222980 A JP 3222980A JP H0343873 B2 JPH0343873 B2 JP H0343873B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- setting
- generator
- circuit
- bending point
- 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
- 238000005452 bending Methods 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 16
- 230000033228 biological regulation Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/16—Controlling the angular speed of one shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Description
【発明の詳細な説明】
本発明は、系統に連系して使用される発電所の
電気式調速機（ガバナ）の非直線調定率制御装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-linear regulation rate control device for an electric speed governor of a power plant that is used in connection with a power grid.
系統に連系して使用される発電所は、自発電機
の制御方式が他系統の発電容量との比重によつて
異なる。即ち、比重の大きい容量を受け持つ主発
電機は系統の周波数を規制するのに対して、比重
の小さい容量の発電機は主発電機のガバナ開度と
連動して追従する定出力（連動）運転や主発電機
の制御に全く関係のない定出力運転、系統に定め
られた周波数変動範囲内でのガバナフリー運転
（２段折線特性）や定出力運転（１段折線特性）
等の種々の運転方式が用いられる。 In power plants that are connected to the grid, the control method for their own generators differs depending on the relative power generation capacity of other systems. In other words, the main generator with a large capacity regulates the frequency of the grid, whereas the generator with a small capacity has a constant output (linked) operation that follows in conjunction with the governor opening of the main generator. and constant power operation that is completely unrelated to the control of the main generator, governor-free operation (two-stage broken line characteristic) and constant power operation (first-stage broken line characteristic) within the frequency fluctuation range specified for the grid.
Various operating methods are used, such as:
本発明は上述の運転方式の内、一般に非直線調
定率特性と呼ばれる二段折線特性さらには一段折
線特性を得るための調速機の制御装置に関するも
のである。 The present invention relates to a governor control device for obtaining a two-stage broken line characteristic and a single-stage broken line characteristic, which are generally referred to as non-linear regulation rate characteristics, among the above-mentioned operating systems.
この種の従来方式は、非直線調定率特性を得る
のに、自発電機の速度調定率を設定するガバナ開
度に応じて設定値を変える剛性復元設定部の特性
を非線形特性とするものであつた。第１図は従来
の調速機制御装置のブロツク図を示し、定角加速
制御方式のものである。同図において、速度設定
部１の設定値と出力設定部２の設定値の加減算値
は比較部３にて発電機４の回転数検出部５Ａ，５
Ｂの検出値と比較される。回転数検出部５Ａは発
電機４の回転数をパルス周波数として検出し、検
出部５Ｂはパルス周波数を電圧信号に変換する。
比較部３での比較結果は比較部６にて発電機４の
ガバナ開度信号θに応じて設定値が決められる剛
性復元設定部７の設定値と比較され、その偏差は
速度制御演算増幅部８で演算されて速度制御信号
にされる。この速度制御信号は比較部９にて回転
数検出部５Ａ，５Ｂの検出値を入力とする加減速
度検出部１０の検出値と比較され、その偏差は加
減速度制御演算部１１で演算される。演算部１１
の出力は比較部１２にてガバナ開度信号θの検出
部１３と比較され、ガバナ開度制御演算増幅部１
４の入力とされるガバナ開度マイナループが構成
される。 In order to obtain non-linear regulation rate characteristics, this type of conventional method uses a stiffness restoration setting section that changes the set value according to the governor opening degree to set the speed regulation rate of the generator as a non-linear characteristic. Ta. FIG. 1 shows a block diagram of a conventional governor control system, which uses a constant angle acceleration control system. In the same figure, the addition/subtraction value between the setting value of the speed setting part 1 and the setting value of the output setting part 2 is determined by the comparison part 3 in the rotation speed detection parts 5A and 5 of the generator 4.
It is compared with the detected value of B. The rotation speed detection section 5A detects the rotation speed of the generator 4 as a pulse frequency, and the detection section 5B converts the pulse frequency into a voltage signal.
The comparison result in the comparison section 3 is compared in the comparison section 6 with the setting value of the stiffness restoration setting section 7 whose setting value is determined according to the governor opening signal θ of the generator 4, and the deviation is calculated by the speed control operational amplifier section. 8 and is used as a speed control signal. This speed control signal is compared in a comparing section 9 with a detected value of an acceleration/deceleration detecting section 10 which inputs the detected values of the rotation speed detecting sections 5A and 5B, and the deviation thereof is calculated in an acceleration/deceleration control calculating section 11. Arithmetic unit 11
The output of
A governor opening minor loop, which is inputted to No. 4, is constructed.
こうした制御装置において、剛性復元設定部７
の特性を非直線特性とすること、即ち剛性復元の
量を変えることにより速度調定率δを非直線にす
る。このため、剛性復元を構成するループにおい
て、演算部８，１１，１４及び検出部１３によつ
て構成される前向きの伝達回路の定まつた定数に
対して剛性復元設定部７の帰還量が非直線に変化
することになり、設定部７での特性利得の変化が
制御系の利得変化として現れることから、系の安
定条件も成立させるには剛性復元設定部７の非線
形特性の利得に限界がある。また、非線形特性の
剛性復元設定部７により系の伝達関数がその特性
変化分に対応して変化する問題がある。こうした
ことから、従来方式では第２図ａ，ｂに発電機出
力PNAに対する速度FNAの二段折線特性及び一段
折線特性を示すように、折線部での特性の変化率
ΔF／ΔPに制約が生じ、非直線特性の範囲の選定
や調整上に制約を生じる欠点があつた。 In such a control device, the stiffness restoration setting section 7
By making the characteristics non-linear, that is, by changing the amount of stiffness restoration, the speed adjustment rate δ is made non-linear. Therefore, in the loop constituting the stiffness restoration, the feedback amount of the stiffness restoration setting section 7 is non-uniform with respect to the fixed constant of the forward transmission circuit constituted by the calculation sections 8, 11, 14 and the detection section 13. Since the change in the characteristic gain in the setting section 7 appears as a change in the gain of the control system, there is a limit to the gain of the nonlinear characteristic of the stiffness restoration setting section 7 in order to satisfy the system stability condition. be. Further, there is a problem in that the transfer function of the system changes depending on the change in the characteristics due to the stiffness restoration setting section 7 of the nonlinear characteristics. For this reason, in the conventional method, as shown in Figure 2 a and b, which show the two-step broken line characteristic and the one-step broken line characteristic of the speed F NA with respect to the generator output P NA , the rate of change of the characteristic at the broken line part is limited ΔF / ΔP. This has resulted in the drawback that restrictions are placed on the selection and adjustment of the range of nonlinear characteristics.
本発明の目的は、折線部での二段折線特性の変
化率を任意に設定しさらに一段折線特性への設定
切替えも可能にし、しかも系の安定も、得ること
ができる非直線調定率制御装置を提供するにあ
る。 An object of the present invention is to provide a non-linear adjustment rate control device that can arbitrarily set the rate of change of the two-step broken line characteristic in the broken line section, and also enable setting switching to the single-step broken line characteristic, and also provide system stability. is to provide.
本発明は、剛性復元設定部は調定率で定められ
た一定値で帰還することで剛性復元設定部を含む
系を安定系とし、発電機周波数の帰環系に二段非
線形さらには一段非線形に特性変更可能な非線形
伝達関数回路を具えることにより、任意の二段折
線さらには一段折線非直線調定率を得ることを特
徴とする。 In the present invention, the stiffness restoration setting section returns a constant value determined by the adjustment rate, thereby making the system including the stiffness restoration setting section a stable system, and making the return system of the generator frequency nonlinear in two steps and then nonlinear in one step. By providing a nonlinear transfer function circuit whose characteristics can be changed, an arbitrary two-stage broken line or even one-stage broken line nonlinear adjustment rate can be obtained.
第３図は本発明の一実施例を示す。同図が第１
図と異なる部分は、発電機回転数（周波数）帰還
系に加算回路１５と非直線調定率設定部１６とか
ら成る非線形伝達関数回路を具え、剛性復元設定
部７は直線入出力特性とした点にある。非線形伝
達関数回路の具体的な実施例を第４図に示す。同
図中、Ｒは演算抵抗、SRはダイオード、A1〜A7
は演算増幅器を示す。第１の加算回路１７では検
出部５Ｂからの系統周波数に比例した電圧信号と
系統基準周波数設定器１６1の設定電圧との偏差
が利得１で演算増幅器A1から取り出される。こ
の偏差信号は、演算増幅器A2等で構成する負極
性での屈曲点設定回路１８と、増幅器A3等で構
成する正極性での屈曲点設定回路１９との共通入
力にされる。屈曲点設定回路１８側では加算回路
１７からの偏差信号入力が第１の屈曲点（＋
ΔFNA1）設定器１６2の設定値（正）を越える負
の絶対値にあるときに利得１で増幅した正極性電
圧で出力し、屈曲点設定回路１９側では第１の屈
曲点（−ΔFNA1）設定器１６3の設定値（負）を
越える正の絶対値にあるときに利得１で増幅した
負極性電圧で出力する。屈曲点設定回路１８側出
力は増幅器A4等で構成する負極性での第２の屈
曲点設定回路２０の入力とされると共に増幅器
A6等で構成する第２の加算回路２１の加算入力
とされる。屈曲点設定回路２０はその設定器１６
４で第２の屈曲点＋ΔFNA2（＞＋ΔFNA1）を設定し、
屈曲点設定回路１８の出力が該設定値を越えると
きに利得１で増幅した負極性電圧で出力する。ま
た、屈曲点設定回路２０の出力は加算回路２２の
入力にされる。屈曲点設定回路１９の出力は増幅
器A5等で構成する正極性での第２の屈曲点設定
回路２１の入力とされると共に加算回路２２の入
力とされる。屈曲点設定回路２１はその設定器１
６5で第２の屈曲点−ΔFNA2を設定し、屈曲点設
定回路１９の出力が該設定値を越えるときに利得
１で増幅した正極性電圧で出力し、その出力は加
算回路２２の加算入力とされる。これら偏差信号
を加算した加算回路２２の出力はその非直線傾斜
設定器１６6を通して増幅器A7等で構成する第３
の加算回路１５にて検出部５Ｂの出力と加算反転
される。この出力は比較部３の比較入力として帰
還される。 FIG. 3 shows an embodiment of the invention. The same figure is the first
The difference from the diagram is that the generator rotational speed (frequency) feedback system is equipped with a nonlinear transfer function circuit consisting of an addition circuit 15 and a nonlinear adjustment rate setting section 16, and the stiffness restoration setting section 7 has linear input/output characteristics. It is in. A specific embodiment of the nonlinear transfer function circuit is shown in FIG. In the figure, R is arithmetic resistor, SR is diode, A 1 to A 7
indicates an operational amplifier. In the first adder circuit 17, the deviation between the voltage signal proportional to the system frequency from the detection section 5B and the set voltage of the system reference frequency setter 161 is extracted with a gain of 1 from the operational amplifier A1. This deviation signal is provided as a common input to a negative polarity bending point setting circuit 18 comprising an operational amplifier A 2 and the like, and a positive polarity bending point setting circuit 19 comprising an amplifier A 3 and the like. On the bending point setting circuit 18 side, the deviation signal input from the adder circuit 17 is set to the first bending point (+
ΔF NA1 ) When the absolute value is negative, exceeding the set value (positive) of the setter 162 , a positive polarity voltage amplified with a gain of 1 is output, and on the bending point setting circuit 19 side, the first bending point (-ΔF NA1 ) Outputs a negative polarity voltage amplified with a gain of 1 when it has a positive absolute value exceeding the set value (negative) of the setter 163 . The output from the bending point setting circuit 18 side is input to a second bending point setting circuit 20 with negative polarity, which is composed of an amplifier A4 , etc.
It is used as the addition input of the second addition circuit 21 composed of A6 and the like. The bending point setting circuit 20 has a setting device 16.
4 , set the second bending point +ΔF NA2 (>+ΔF NA1 ),
When the output of the bending point setting circuit 18 exceeds the set value, a negative polarity voltage amplified with a gain of 1 is output. Further, the output of the bending point setting circuit 20 is input to the adding circuit 22. The output of the bending point setting circuit 19 is input to a second bending point setting circuit 21 with positive polarity, which is composed of an amplifier A 5 and the like, and is also input to an adder circuit 22 . The bending point setting circuit 21 is the setting device 1
6 5 sets the second bending point -ΔF NA2 , and when the output of the bending point setting circuit 19 exceeds the set value, it outputs a positive polarity voltage amplified with a gain of 1, and the output is added by the adding circuit 22. It is considered as input. The output of the adder circuit 22, which adds these deviation signals, is passed through the nonlinear slope setting device 166 to a third circuit composed of an amplifier A7 , etc.
The adder circuit 15 adds and inverts the output of the detector 5B. This output is fed back as a comparison input to the comparison section 3.
こうした構成の非直線調定率設定部１６の動作
を第７図を参照して説明する。設定器１６1の設
定値に系統基準周波数に相当する電圧を設定し、
実系統周波数（検出信号Ｂ）に変動が生じると、
加算回路１７にはその偏差電圧が逆極性で発生す
る。今、系統周波数が上昇した場合、加算回路１
７の出力には負極性の電圧が発生し、この電圧は
設定器１６2の設定電圧＋ΔFNA1以上とならない
限り屈曲点設定回路１８の出力が零にある。逆に
系統周波数が設定器１６1の設定値よりも下降し
たときには該偏差信号が屈曲点設定回路１９の設
定器１６3の設定値−ΔFNA1以上とならない限り
屈曲点設定回路１９の出力が零にある。このと
き、屈曲点設定回路２０，２１共に出力零にな
る。従つて、第１の設定範囲＋ΔFNA1〜−ΔFNA1
での系統周波数変動に対しては加算回路２２の入
力合計値は零にあり、その反転出力を零になり、
加算回路１５の入力は系統周波数信号Ｂのみにな
り、系統周波数に比例した出力Ｄ（＝Ｂ）として
比較部３側に帰還され、ガバナフリー運転にな
る。 The operation of the non-linear adjustment rate setting section 16 having such a configuration will be explained with reference to FIG. 7. Set the voltage corresponding to the system reference frequency to the setting value of setting device 16 1 ,
When a fluctuation occurs in the actual system frequency (detection signal B),
The difference voltage is generated in the adder circuit 17 with opposite polarity. Now, if the grid frequency increases, adder circuit 1
A negative polarity voltage is generated at the output of 7, and the output of the bending point setting circuit 18 remains at zero unless this voltage exceeds the set voltage of the setter 162 +ΔF NA1 . Conversely, when the system frequency falls below the setting value of the setting device 16 1 , the output of the bending point setting circuit 19 becomes zero unless the deviation signal becomes equal to or higher than the setting value of the setting device 16 3 of the bending point setting circuit 19 - ΔF NA1 . It is in. At this time, the output of both the bending point setting circuits 20 and 21 becomes zero. Therefore, the first setting range +ΔF NA1 ~ -ΔF NA1
For the system frequency fluctuation at , the total input value of the adder circuit 22 is zero, and the inverted output is
The input of the adder circuit 15 becomes only the system frequency signal B, which is fed back to the comparator 3 side as an output D (=B) proportional to the system frequency, resulting in governor free operation.
次に、＋ΔFNA1〜ΔFNA2を越える周波数変動には
その正負によつて屈曲点設定回路１８側又は１９
側に偏差電圧を生じ、該偏差電圧が設定範囲＋
ΔFNA2〜−ΔFNA2以内であれば屈曲点設定回路２
０，２１の出力が共に零にあるので該偏差電圧が
そのまま加算回路２２で反転出力Ｃを得る。この
電圧は検出部５Ｂの出力Ｂを打ち消す極性である
ので、設定器１６6の設定値が最大（１）にあれ
ば発電機周波数の増減分と同じ値を減少、増加さ
せ、周波数のフイードバツク値になる出力Ｄに変
化はなくなる。すなわち、ガバナ開度に変化を生
じることなく出力一定（ガイドベーン開度一定）
の特性になる。また、設定器１６6の設定値が１
以下のときは出力ＣがC′のように変化する。 Next, for frequency fluctuations exceeding +∆F NA1 to ∆F NA2 , the bending point setting circuit 18 side or 19
A deviation voltage is generated on the side, and the deviation voltage is within the setting range +
If within ΔF NA2 ~ -ΔF NA2 , bending point setting circuit 2
Since the outputs of 0 and 21 are both zero, the inverted output C is obtained from the adder circuit 22 using the deviation voltage as it is. This voltage has a polarity that cancels the output B of the detection unit 5B, so if the setting value of the setting device 166 is at the maximum (1), it decreases or increases the same value as the increase or decrease in the generator frequency, and the frequency feedback value There is no change in the output D. In other words, the output is constant without any change in the governor opening (constant guide vane opening)
becomes the characteristic of Also, the setting value of the setting device 16 6 is 1.
In the following cases, the output C changes like C'.
次に、系統周波数変化が設定範囲＋ΔFNA2〜−
ΔFNA2を越えると、屈曲点設定回路２０，２１に
も出力があり、この出力は屈曲点設定回路１８又
は１９に出力を打ち消すことになるため、加算回
路２２の出力変化がなく、再びガバナフリー運転
特性になる。 Next, the system frequency change is within the setting range +ΔF NA2 ~ -
When ΔF NA2 is exceeded, the bending point setting circuits 20 and 21 also have outputs, and this output cancels the output to the bending point setting circuit 18 or 19, so there is no change in the output of the adding circuit 22, and the governor is free again. It becomes driving characteristics.
従つて、加算回路１５と非直線調定率設定器１
６は、系統基準周波数に対する発電機の周波数変
化に対して、屈曲点を境にして二段折線特性出力
Ｄ又はD′を発生する。即ち、発電機周波数変化
が屈曲点±ΔFNA1の範囲内では周波数検出特性に
変化はなく、その他の範囲では周波数に比例して
変化する。 Therefore, the addition circuit 15 and the nonlinear adjustment rate setter 1
6 generates a two-stage curved line characteristic output D or D' with the bending point as the boundary in response to a change in the frequency of the generator with respect to the grid reference frequency. That is, the frequency detection characteristic does not change within the range of the inflection point ±ΔF NA1 of the generator frequency, and changes in proportion to the frequency in other ranges.
第５図ａは上述の設定値＋ΔFNA1，−ΔFNA1，＋
ΔFNA2，−ΔFNA2に対する検出部５Ｂの出力Ｂと加
算回路２２の出力Ｃとこれらを加え合わせた出力
Ｄの特性を示し、そのときの発電機出力PNAと速
度特性を第５図ｂに実線で示すように２段折線の
非直線調定率特性を得ることができる。また、設
定器１６6を最大出力よりも下げれば、範囲±
ΔFNA1〜ΔFNA2での出力Ｃの傾斜が変わり、第
５図ｂに破線で示す二段折線調定率特性にも変え
ることができる。さらに、設定器１６2，１６3の
設定値を零にすると、出力Ｂに対するＣ，Ｄは第
６図ａに示す関係になり、そのときの発電機出力
と速度特性は第６図ｂに実線で示す一段折線特性
に変更できるし、その特性も設定器１６6を最大
値よりも下げると破線で示す特性変更ができる。 Figure 5a shows the above set values +ΔF NA1 , -ΔF NA1 , +
The characteristics of the output B of the detection unit 5B, the output C of the adder circuit 22, and the output D which is the sum of these are shown for ΔF NA2 and -ΔF NA2 , and the generator output P NA and speed characteristics at that time are shown in Fig. 5b. As shown by the solid line, a non-linear adjustment rate characteristic of a two-step broken line can be obtained. Also, if the setting device 16 6 is lowered than the maximum output, the range ±
The slope of the output C between ΔF NA1 and ΔF NA2 changes, and can also be changed to the two-step curved line adjustment rate characteristic shown by the broken line in FIG. 5b. Furthermore, when the setting values of the setting devices 16 2 and 16 3 are set to zero, the relationship between C and D with respect to the output B becomes as shown in Fig. 6a, and the generator output and speed characteristics at that time are shown by the solid line in Fig. 6b. The characteristic can be changed to the one-step broken line characteristic shown by , and by lowering the setting device 16 6 below the maximum value, the characteristic can be changed to the broken line characteristic.
以上のとおり、本発明は、発電機速度帰還系に
第１、第２の設定周波数範囲を持つ非線形伝達関
数回路を具え、剛性復元設定部を直線特性とした
ため、系を安定化しかつ任意の二段折線非直線調
定率を得ることができるし、第１の設定範囲を零
にすることで容易に一段折線非直線調定率に変更
でき一段折線と二段折線の共通回路として汎用性
に優れる。 As described above, the present invention includes a nonlinear transfer function circuit having the first and second set frequency ranges in the generator speed feedback system, and has a linear characteristic for the stiffness restoration setting section, so that the system can be stabilized and arbitrary frequency ranges can be set. It is possible to obtain a non-linear adjustment rate for a single-step broken line, and by setting the first setting range to zero, it can be easily changed to a non-linear adjustment rate for a single-step broken line, providing excellent versatility as a common circuit for a single-step broken line and a two-step broken line.
第１図は従来の制御方式を示すブロツク図、第
２図は従来の非直線調定率特性図、第３図は本発
明のブロツク図、第４図は第３図における非線形
伝達関数回路の一実施例を示す回路図、第５図及
び第６図は本発明の制御動作を示す特性図、第７
図は第４図の各部特性図である。
１…速度設定部、２…出力設定部、４…発電
機、５Ａ，５Ｂ…回転数検出部、７…剛性復元設
定部、８…速度制御演算増幅部、１０…加減速度
検出部、１１…加減速度制御演算部、１３…ガバ
ナ開度検出部、１４…ガバナ開度制御演算増幅
部、１６…非直線調定率設定部、１６1…系統基
準周波数設定器、１６2，１６3，１６4，１６5…
屈曲点設定器、１６6…非直線傾斜設定器、１７
…加算回路、１８，１９…第１の屈曲点設定回
路、２０，２１…第２の屈曲点設定回路、２２…
加算回路。
Fig. 1 is a block diagram showing a conventional control system, Fig. 2 is a conventional nonlinear regulation rate characteristic diagram, Fig. 3 is a block diagram of the present invention, and Fig. 4 is an example of the nonlinear transfer function circuit in Fig. 3. A circuit diagram showing an embodiment, FIGS. 5 and 6 are characteristic diagrams showing control operations of the present invention, and FIG.
The figure is a characteristic diagram of each part of FIG. 4. DESCRIPTION OF SYMBOLS 1... Speed setting part, 2... Output setting part, 4... Generator, 5A, 5B... Rotation speed detection part, 7... Rigidity restoration setting part, 8... Speed control arithmetic amplification part, 10... Acceleration/deceleration detection part, 11... Acceleration/deceleration control calculation section, 13... Governor opening detection section, 14... Governor opening control calculation amplifier section, 16... Non-linear adjustment rate setting section, 16 1 ... System reference frequency setting device, 16 2 , 16 3 , 16 4 ,16 5 ...
Bend point setter, 16 6 ... Non-linear slope setter, 17
... Addition circuit, 18, 19... First bending point setting circuit, 20, 21... Second bending point setting circuit, 22...
addition circuit.
Claims (1)
特性及び二段折線特性の非直線調定率に制御する
において、前記発電機のガバナ開度に対して調定
率で定められた一定比率の出力を得る剛性復元設
定部７と、前記発電機の周波数検出信号と系統基
準周波数との偏差を検出する第１の加算回路１７
と、系統基準周波数を中心として夫々正負に設定
する第１の屈曲点設定値に対して前記偏差が小さ
いときに出力零になりかつ該偏差が大きいときに
その差出力を得る正負一対の第１の屈曲点設定回
路１８，１９と、系統基準周波数を中心として
夫々正負に設定する第２の屈曲点設定値に対して
夫々前記第１の屈曲点設定回路の出力が小さいと
きに出力零になりかつ該出力が大きいときにその
差出力を得る正負一対の第２の屈曲点設定回路２
０，２１と、前記第１及び第２の屈曲点設定回路
の各出力を加算し前記折線特性の傾斜を定める非
直線傾斜設定器の設定値に比例した出力を得る第
２の加算回路２２と、前記発電機の周波数検出信
号に前記第２の加算回路の出力を加算して発電機
の速度検出信号にする第３の加算回路１５と、前
記発電機の速度設定値と前記速度検出信号との偏
差を得る第１の比較部３と、この比較部の出力と
前記剛性復元設定部の出力との偏差を得る第２の
比較部６と、この比較部の出力から速度制御演算
をして前記ガバナ開度の制御出力を得る速度制御
部８〜１４とを備えたことを特徴とする電気式調
速機の非直線調定率制御装置。1. In controlling a generator used in connection with the power grid to a non-linear regulation rate with a single-fold line characteristic and a double-fold line characteristic, a constant ratio determined by the regulation rate to the governor opening of the generator is controlled. a stiffness restoration setting section 7 that obtains an output, and a first addition circuit 17 that detects a deviation between the frequency detection signal of the generator and the grid reference frequency.
and a pair of positive and negative first inflection point set values that are respectively set positive and negative around the grid reference frequency, and which have an output of zero when the deviation is small and a difference output when the deviation is large. The output becomes zero when the output of the first bending point setting circuit is small with respect to the bending point setting circuits 18, 19 of and a pair of positive and negative second bending point setting circuits 2 that obtain the difference output when the output is large.
0, 21, and a second adding circuit 22 which adds each output of the first and second bending point setting circuits and obtains an output proportional to a setting value of a non-linear slope setting device that determines the slope of the broken line characteristic. , a third addition circuit 15 that adds the output of the second addition circuit to the frequency detection signal of the generator to generate a speed detection signal of the generator, and a speed setting value of the generator and the speed detection signal. A first comparison section 3 obtains the deviation of A non-linear regulating rate control device for an electric speed governor, comprising speed control sections 8 to 14 that obtain a control output of the governor opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3222980A JPS56129598A (en) | 1980-03-14 | 1980-03-14 | Nonlinear speed regulation control system for electric governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3222980A JPS56129598A (en) | 1980-03-14 | 1980-03-14 | Nonlinear speed regulation control system for electric governor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56129598A JPS56129598A (en) | 1981-10-09 |
| JPH0343873B2 true JPH0343873B2 (en) | 1991-07-04 |
Family
ID=12353134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3222980A Granted JPS56129598A (en) | 1980-03-14 | 1980-03-14 | Nonlinear speed regulation control system for electric governor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56129598A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890217A (en) * | 1981-11-25 | 1983-05-28 | Fuji Electric Co Ltd | Electric speed governor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5397104A (en) * | 1977-02-04 | 1978-08-25 | Hitachi Ltd | Turbine controlling device |
-
1980
- 1980-03-14 JP JP3222980A patent/JPS56129598A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5397104A (en) * | 1977-02-04 | 1978-08-25 | Hitachi Ltd | Turbine controlling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56129598A (en) | 1981-10-09 |
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