JPS6347062B2 - - Google Patents
Info
- Publication number
- JPS6347062B2 JPS6347062B2 JP56192740A JP19274081A JPS6347062B2 JP S6347062 B2 JPS6347062 B2 JP S6347062B2 JP 56192740 A JP56192740 A JP 56192740A JP 19274081 A JP19274081 A JP 19274081A JP S6347062 B2 JPS6347062 B2 JP S6347062B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- power
- signal
- deviation
- detector
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 20
- 239000000284 extract Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Direct Current Feeding And Distribution (AREA)
Description
【発明の詳細な説明】
(a) 発明の技術分野
本発明は複数の原子力電源で発生した電力を負
荷側に送電するための直流送電系統において、特
に原子力電源側の電源周波数を安定かつ良好に制
御し得るようにした直流送電系統の周波数制御装
置に関する。[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention is directed to a DC transmission system for transmitting electric power generated by a plurality of nuclear power sources to a load side, in particular to stabilize and improve the power frequency of the nuclear power source side. The present invention relates to a frequency control device for a DC power transmission system.
(b) 従来技術とその問題点
電力需要の拡大に伴ない大容量の原子力発電所
の建設が進められているが、立地条件等の制約か
ら負荷側より遠隔地に建設しなければならないの
が現状である。一方、このような長距離かつ大電
力の送電を従来の交流送電系統で行なうには、系
統の安定性が問題になつてくる。そこで、近年著
しい進歩を遂げている半導体技術による高信頼
度・高耐圧・大電流のサイリスタ素子を応用した
大電力直流送電が脚光を浴びてきている。しか
し、この直流送電を原子力電源群に適用した場
合、その整流制御に問題が生じる。以下、この点
について詳述する。(b) Conventional technology and its problems The construction of large-capacity nuclear power plants is progressing with the expansion of electricity demand, but due to constraints such as location conditions, many nuclear power plants have to be constructed in areas remote from the load side. This is the current situation. On the other hand, when transmitting large amounts of power over such long distances using conventional AC power transmission systems, system stability becomes an issue. Therefore, high-power DC power transmission that utilizes highly reliable, high-voltage, and large-current thyristor elements based on semiconductor technology, which has made remarkable progress in recent years, has been attracting attention. However, when this DC power transmission is applied to a nuclear power source group, a problem arises in the rectification control. This point will be explained in detail below.
第１図は、原子力電源の発電々力を直流送電系
統を介して負荷側へ送電する場合の電力系統構成
例を示したものである。なお、原子力電源は一般
にｎ機設置されるが、本例では発電機３台で代表
させている。図において、発電機１，２，３で発
生した電力は、発電機用変圧器４、変換器用変圧
器５を介して順変換器で直流に変換され、これよ
り直流送電線路８を通して逆変換器７にて交流電
力に変換され、逆変換器用変圧器９を介して負荷
１０に供給される。なお、図において１１は原子
力電源側交流母線である。 FIG. 1 shows an example of a power system configuration in which the generated power of a nuclear power source is transmitted to a load side via a DC power transmission system. Although n nuclear power sources are generally installed, in this example, three generators are used as a representative. In the figure, the electric power generated by generators 1, 2, and 3 is converted into direct current by a forward converter via a generator transformer 4 and a converter transformer 5, and then passed through a DC transmission line 8 to an inverse converter. The AC power is converted into AC power at 7 and supplied to a load 10 via an inverter transformer 9. In addition, in the figure, 11 is an AC bus bar on the nuclear power supply side.
ところで、かかる場合に問題となるのは原子力
発電所が通常原子炉の圧力一定制御を優先する方
式を採つていることから、タービン回転数すなわ
ち電源周波数一定制御を、直流送電系の整流制御
部にその機能を持たせなければならないという点
である。従来のこの周波数一定制御は、原子力発
電所側で交流系統周波数を基準に行なわれている
が、このように交流系が存在しないため整流制御
部で行なわざるを得ない。 By the way, the problem in such a case is that nuclear power plants usually adopt a system that gives priority to constant pressure control of the reactor, so it is necessary to apply constant control of the turbine rotation speed, that is, power frequency, to the rectification control section of the DC power transmission system. The point is that it must have that function. Conventionally, this constant frequency control is performed on the nuclear power plant side based on the frequency of the AC system, but since there is no AC system, it has to be performed in the rectification control section.
従来、この整流制御部で行なう電源周波数一定
制御として提案されている方式は、原子力電源側
交流母線１１から検出される電源周波数と、周波
数基準信号発生器からの基準周波数との周波数偏
差を求めて、これを比例（Ｐ）、積分(I)、微分(D)
要素よりなるPIDコントローラに入力し、これか
らの制御信号によつて順変換器を制御し、これに
より直流送電線路８に乗せる送電量を制御し、発
電量と負荷１０量のバランスをとることにより周
波数を一定に維持しようとするものである。 Conventionally, a method proposed as a constant power supply frequency control performed by this rectification control unit calculates the frequency deviation between the power supply frequency detected from the nuclear power supply side AC bus 11 and the reference frequency from the frequency reference signal generator. , this is proportional (P), integral (I), differential (D)
The control signal is input to a PID controller consisting of elements, and the forward converter is controlled by the control signal, thereby controlling the amount of power transmitted to the DC transmission line 8, and by balancing the amount of power generation and load 10, the frequency The aim is to maintain a constant value.
しかしながら、かような周波数制御方式におい
ては、交流母線１１の検出周波数信号に含まれる
高周波および低周波成分によつて、PIDコントロ
ーラに入力される周波数偏差信号が実際とは異な
つた変動として現われ、これがコントローラ内で
の微分動作により制御自体が不安定となり、安定
した周波数制御を行なうことができないという問
題がある。 However, in such a frequency control method, the frequency deviation signal input to the PID controller appears as a fluctuation different from the actual one due to the high frequency and low frequency components contained in the detected frequency signal of the AC bus 11. There is a problem that the control itself becomes unstable due to the differential operation within the controller, and stable frequency control cannot be performed.
(c) 発明の目的
本発明の目的は、PIDコントローラ内での微分
動作によつて制御自体が不安定となることを防止
し、原子力電源側の電源周波数を安定かつ良好に
一定制御することが可能な信頼性の高い直流送電
系統の周波数制御装置を提供することにある。(c) Purpose of the Invention The purpose of the present invention is to prevent the control itself from becoming unstable due to differential operation within the PID controller, and to control the power frequency of the nuclear power source side stably and well. An object of the present invention is to provide a frequency control device for a DC power transmission system with high reliability.
(d) 発明の概要
上記の目的を達成するために本発明では、複数
の原子力電源で発生した電力を順変換器で直流電
力に変換して直流送電線路により送電し、逆変換
器で交流電力に変換して負荷に供給するようにし
た直流送電系統の周波数制御装置を、
原子力電源の電源周波数信号を入力とし、当該
電源周波数信号に含まれる高周波および低周波成
分を除去して電源周波数ｆを中心とする±α
（α：安定した制御動作を確保できるように任意
に設定される定数）なる帯域の周波数信号を抽出
するバンドパスフイルタと、バンドパスフイルタ
からの出力信号の周波数を検出する周波数検出器
と、周波数検出器からの検出周波数信号と予め定
められた周波数基準信号との偏差を検出する周波
数偏差検出器と、周波数偏差検出器からの周波数
偏差信号を入力とし、当該周波数偏差信号に基づ
いて当該偏差が零となるように比例（Ｐ）、積分
(I)、微分(D)演算を行ない順変換器を制御するPID
コントローラとを備えて構成している。(d) Summary of the Invention In order to achieve the above object, the present invention converts the power generated by multiple nuclear power sources into DC power using a forward converter and transmits the power through a DC transmission line, and converts the power generated by a plurality of nuclear power sources into DC power using a reverse converter. A frequency control device for a DC power transmission system, which is configured to convert the frequency signal into a DC power source and supply it to the load, inputs the power frequency signal of the nuclear power source, removes the high frequency and low frequency components contained in the power frequency signal, and converts the power frequency f to the power source frequency f. ±α centered
(α: a constant arbitrarily set to ensure stable control operation); a bandpass filter that extracts a frequency signal in the band; a frequency detector that detects the frequency of the output signal from the bandpass filter; A frequency deviation detector detects the deviation between the detected frequency signal from the detector and a predetermined frequency reference signal, and the frequency deviation signal from the frequency deviation detector is input, and the deviation is detected based on the frequency deviation signal. Proportional (P) and integral so that it becomes zero
PID that performs (I) and differential (D) operations and controls the forward converter
It is configured with a controller.
(e) 発明の実施例
以下、本発明を図面に示す実施例について説明
する。第２図は、本発明による直流送電系統の周
波数制御装置の構成例を示したもので、図におい
て第１図と同一部分には同一符号を付してその説
明を省略する。(e) Embodiments of the invention Hereinafter, embodiments of the present invention shown in the drawings will be described. FIG. 2 shows an example of the configuration of a frequency control device for a DC power transmission system according to the present invention. In the figure, the same parts as in FIG.
図において、１２は前記原子力電源側交流母線
１１からの電源周波数信号を入力とするバンドパ
スフイルタ、１３はこのバンドパスフイルタ１２
からの出力周波数信号を検出し、該周波数に対応
した電圧信号に変換する周波数検出器（Ｆ／Ｖ変
換器）である。また、１４は基準周波数に対応し
た電圧信号を発生する周波数基準信号発生器１５
の出力信号と、上記周波数検出器１３の出力信号
との偏差を検出する周波数偏差検出器である。さ
らに、１６は比例、積分、微分要素よりなるPID
制御器と、上記順変換器６を構成するサイリスタ
のゲートを制御する制御パルス回路とからなる
PIDコントローラで、上記周波数偏差検出器１４
からの周波数偏差信号を入力とし、当該周波数偏
差信号に基づいて当該偏差が零となるように比例
（Ｐ）、積分(I)、微分(D)演算を行ない順変換器６を
制御して送電電力を制御するものである。 In the figure, 12 is a bandpass filter that receives the power frequency signal from the nuclear power source side AC bus 11, and 13 is this bandpass filter 12.
This is a frequency detector (F/V converter) that detects an output frequency signal from the converter and converts it into a voltage signal corresponding to the frequency. Further, 14 is a frequency reference signal generator 15 that generates a voltage signal corresponding to the reference frequency.
This is a frequency deviation detector that detects the deviation between the output signal of the frequency detector 13 and the output signal of the frequency detector 13. Furthermore, 16 is a PID consisting of proportional, integral, and differential elements.
It consists of a controller and a control pulse circuit that controls the gates of the thyristors constituting the forward converter 6.
With the PID controller, the above frequency deviation detector 14
The frequency deviation signal from is input, and proportional (P), integral (I), and differential (D) calculations are performed based on the frequency deviation signal so that the deviation becomes zero, and the forward converter 6 is controlled to transmit power. It controls electric power.
第３図は、上記バンドパスフイルタ１２の周波
数特性を示すものである。このバンドパスフイル
タ１２は、制御動作に不要かつ悪影響を及ぼす上
記電源周波数信号に含まれる高周波および低周波
成分を除去して、所定帯域のみの周波数信号を抽
出するものである。この帯域の設定は例えば（
±α）＝（±0.1）｛但しαは、安定した制御動
作を確保できるように任意に設定される定数｝な
る関係に基づいて行なう。つまり、原子力電源の
電源周波数が50ヘルツの場合には、
＋0.1＝50＋0.1×50＝55（ヘルツ）
−0.1＝50−0.1×50＝45（ヘルツ）
第３図のように上限設定周波数iを55ヘルツ、
下限設定周波数2を45ヘルツとして帯域45〜55ヘ
ルツを得る。 FIG. 3 shows the frequency characteristics of the bandpass filter 12. This bandpass filter 12 removes high frequency and low frequency components included in the power supply frequency signal that are unnecessary and have a negative effect on control operations, and extracts a frequency signal only in a predetermined band. For example, the settings for this band are (
This is performed based on the relationship: ±α)=(±0.1) {where α is a constant arbitrarily set to ensure stable control operation}. In other words, if the power frequency of the nuclear power source is 50 hertz, +0.1 = 50 + 0.1 x 50 = 55 (hertz) -0.1 = 50 - 0.1 x 50 = 45 (hertz) The upper limit is set as shown in Figure 3. frequency i 55 hertz,
Set the lower limit setting frequency 2 to 45 Hz to obtain a band of 45 to 55 Hz.
この第３図からわかるように、下限設定周波数
2（＝45ヘルツ）以下および上限設定周波数1（＝
55ヘルツ）以上の周波数領域ではゲインが抑えら
れるため、このバンドパスフイルタ１２により電
源周波数信号中から、制御動作に不要かつ悪影響
を及ぼす高周波および低周波成分を除去すること
ができる。換言すれば、周波数偏差の本質的変動
（実際の変動）をPIDコントローラ１６に入力す
ることが可能となり、従来のようにPIDコントロ
ーラ１６内での微分動作によつて制御自体が不安
定となるようなことがなくなり、原子力電源側の
電源周波数を安定かつ良好に一定制御することが
できる。 As you can see from this figure 3, the lower limit setting frequency
2 (=45 Hz) or lower and upper limit setting frequency 1 (=
Since the gain is suppressed in the frequency range above 55 Hz, the bandpass filter 12 can remove high-frequency and low-frequency components that are unnecessary and have an adverse effect on control operations from the power supply frequency signal. In other words, it becomes possible to input the essential fluctuation (actual fluctuation) of the frequency deviation to the PID controller 16, and the control itself becomes unstable due to differential operation within the PID controller 16, unlike in the past. As a result, the power frequency of the nuclear power source can be controlled stably and well.
第４図は、バンドパスフイルタ１２を設けた場
合（本発明）と、設けない場合（従来）の周波数
偏差の変動状態を示したものである。図におい
て、破線Ａが従来、実線Ｂが本発明の変動を夫々
示している。 FIG. 4 shows how the frequency deviation changes when the bandpass filter 12 is provided (the present invention) and when it is not provided (the conventional method). In the figure, the broken line A shows the conventional variation, and the solid line B shows the variation of the present invention.
このように、原子力電源側の電源周波数信号に
含まれる高周波および低周波成分を除去するバン
ドパスフイルタ１２を設けるようにしたので、
PIDコントローラ１６における制御動作に不要か
つ悪影響を及ぼす要因を取除き、電源周波数を安
定かつ良好に制御することができる。 In this way, since the bandpass filter 12 is provided to remove high frequency and low frequency components contained in the power frequency signal on the nuclear power source side,
Factors that are unnecessary and have an adverse effect on control operations in the PID controller 16 are removed, and the power supply frequency can be controlled stably and well.
(f) 発明の変形例
上記実施例では、バンドパスフイルタ１２の帯
域設定を（±α）＝（±0.1）にて行なつた
が、安定した制御動作を確保できるものであれ
ば、これ以外の帯域設定でもよいことは言うまで
もない。(f) Modifications of the Invention In the above embodiment, the band of the bandpass filter 12 was set to (±α) = (±0.1), but other values may be used as long as stable control operation can be ensured. It goes without saying that a band setting of
その他、本発明はその要旨を変更しない範囲
で、種々に変形して実施することができるもので
ある。 In addition, the present invention can be modified and implemented in various ways without changing the gist thereof.
(g) 発明の効果
以上説明したように本発明によれば、PIDコン
トローラ内での微分動作によつて制御自体が不安
定となることを防止し、原子力電源側の電源周波
数を安定かつ良好に一定制御することが可能な極
めて信頼性の高い直流送電系統の周波数制御装置
が提供できる。(g) Effects of the Invention As explained above, according to the present invention, it is possible to prevent the control itself from becoming unstable due to differential operation within the PID controller, and to maintain a stable and favorable power frequency on the nuclear power source side. An extremely reliable frequency control device for a DC power transmission system capable of constant control can be provided.
第１図は原子力電源の発電々力を直流送電系統
を介して負荷側へ送電する場合の構成例を示す
図、第２図は本発明の一実施例を示す構成図、第
３図はバンドパスフイルタの周波数特性を示す
図、第４図は本発明と従来による周波数偏差の変
動を示す図である。
１，２，３……発電機、４，５，９……変圧
器、６，７……順、逆変換器、８……直流送電線
路、１０……負荷、１１……原子力電源側交流母
線、１２……バンドパスフイルタ、１３……周波
数検出器、１４……周波数偏差検出器、１５……
周波数基準信号発生器、１６……PIDコントロー
ラ。
Fig. 1 is a diagram showing an example of a configuration when the generated power of a nuclear power source is transmitted to the load side via a DC transmission system, Fig. 2 is a configuration diagram showing an embodiment of the present invention, and Fig. 3 is a diagram showing a configuration example of a case where the generated power of a nuclear power source is transmitted to the load side via a DC transmission system. FIG. 4 is a diagram showing frequency characteristics of a pass filter, and is a diagram showing fluctuations in frequency deviation according to the present invention and the conventional method. 1, 2, 3... Generator, 4, 5, 9... Transformer, 6, 7... Forward, inverter, 8... DC transmission line, 10... Load, 11... Nuclear power supply side AC Bus bar, 12... Bandpass filter, 13... Frequency detector, 14... Frequency deviation detector, 15...
Frequency reference signal generator, 16...PID controller.
Claims (1)
で直流電力に変換して直流送電線路により送電
し、逆変換器で交流電力に変換して負荷に供給す
るようにした直流送電系統の周波数制御装置にお
いて、 前記原子力電源の電源周波数信号を入力とし、
当該電源周波数信号に含まれる高周波および低周
波成分を除去して電源周波数を中心とする±
α（α：安定した制御動作を確保できるように任
意に設定される定数）なる帯域の周波数信号を抽
出するバンドパスフイルタと、 前記バンドパスフイルタからの出力信号の周波
数を検出する周波数検出器と、 前記周波数検出器からの検出周波数信号と予め
定められた周波数基準信号との偏差を検出する周
波数偏差検出器と、 前記周波数偏差検出器からの周波数偏差信号を
入力とし、当該周波数偏差信号に基づいて当該偏
差が零となるように比例（Ｐ）、積分(I)、微分(D)
演算を行ない前記順変換器を制御するPIDコント
ローラと、 を備えて成ることを特徴とする直流送電系統の周
波数制御装置。[Claims] 1. Electric power generated by a plurality of nuclear power sources is converted into DC power by a forward converter and transmitted through a DC transmission line, and converted into AC power by an inverse converter and supplied to a load. In a frequency control device for a DC power transmission system, the power supply frequency signal of the nuclear power source is input,
The high frequency and low frequency components included in the power supply frequency signal are removed and
a bandpass filter that extracts a frequency signal in a band α (α: a constant arbitrarily set to ensure stable control operation); and a frequency detector that detects the frequency of the output signal from the bandpass filter. , a frequency deviation detector that detects the deviation between the detected frequency signal from the frequency detector and a predetermined frequency reference signal; and a frequency deviation detector that receives the frequency deviation signal from the frequency deviation detector and calculates the deviation based on the frequency deviation signal. Proportional (P), integral (I), differential (D) so that the deviation becomes zero.
A frequency control device for a DC power transmission system, comprising: a PID controller that performs calculations and controls the forward converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56192740A JPS5895946A (en) | 1981-12-02 | 1981-12-02 | Frequency controller for dc transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56192740A JPS5895946A (en) | 1981-12-02 | 1981-12-02 | Frequency controller for dc transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5895946A JPS5895946A (en) | 1983-06-07 |
| JPS6347062B2 true JPS6347062B2 (en) | 1988-09-20 |
Family
ID=16296265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56192740A Granted JPS5895946A (en) | 1981-12-02 | 1981-12-02 | Frequency controller for dc transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5895946A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01292750A (en) * | 1988-05-19 | 1989-11-27 | Yuasa Battery Co Ltd | Welding equipment for plate lugs of storage battery |
| JPH02165862A (en) * | 1988-12-20 | 1990-06-26 | Honda Motor Co Ltd | Method for controlling pouring from holding furnace |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6627026B2 (en) * | 2017-10-20 | 2020-01-08 | エクセルギー・パワー・システムズ株式会社 | DC power interconnection system and secondary battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS492934A (en) * | 1972-05-01 | 1974-01-11 | ||
| JPS51130849A (en) * | 1975-05-08 | 1976-11-13 | Mitsubishi Electric Corp | Carrier protective relay |
-
1981
- 1981-12-02 JP JP56192740A patent/JPS5895946A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS492934A (en) * | 1972-05-01 | 1974-01-11 | ||
| JPS51130849A (en) * | 1975-05-08 | 1976-11-13 | Mitsubishi Electric Corp | Carrier protective relay |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01292750A (en) * | 1988-05-19 | 1989-11-27 | Yuasa Battery Co Ltd | Welding equipment for plate lugs of storage battery |
| JPH02165862A (en) * | 1988-12-20 | 1990-06-26 | Honda Motor Co Ltd | Method for controlling pouring from holding furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5895946A (en) | 1983-06-07 |
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