JPH0713666B2 - Stationary variable frequency power supply - Google Patents
Stationary variable frequency power supplyInfo
- Publication number
- JPH0713666B2 JPH0713666B2 JP62199782A JP19978287A JPH0713666B2 JP H0713666 B2 JPH0713666 B2 JP H0713666B2 JP 62199782 A JP62199782 A JP 62199782A JP 19978287 A JP19978287 A JP 19978287A JP H0713666 B2 JPH0713666 B2 JP H0713666B2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- output
- variable frequency
- frequency power
- 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.)
- Expired - Lifetime
Links
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
- Y02E30/00—Energy generation of nuclear origin
-
- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、沸騰水型原子炉（以下BWRと略す）の冷却材
再循環ポンプを駆動する静止型可変周波数電源装置に係
り、特に、制御系の故障等により予想される原子炉事故
の発生を防止するのに好適な静止型可変周波数電源装置
に関する。Description: TECHNICAL FIELD The present invention relates to a static variable frequency power supply device for driving a coolant recirculation pump of a boiling water reactor (hereinafter abbreviated as BWR), and more particularly to a control system. The present invention relates to a static variable frequency power supply device suitable for preventing the occurrence of a nuclear reactor accident expected due to a system failure or the like.
〔従来の技術〕 BWRでは、原子炉の出力の調整には、原子炉冷却材再循
環流量を制御する方式が採用されている。具体的には、
可変周波数電源装置で冷却材再循環ポンプを駆動し、こ
の電源装置の出力周波数を変えることにより行つてい
る。[Prior Art] BWR employs a method of controlling the reactor coolant recirculation flow rate in order to adjust the reactor power output. In particular,
This is done by driving the coolant recirculation pump with a variable frequency power supply and changing the output frequency of this power supply.
一方、この可変周波数電源装置には、流体継手を備え流
体継手のすべりを変化させて周波数を変えるＭ−Ｇセツ
ト（モータジエネレータ）が採用されている。しかし、
最近ではシステム効率や制御応答性等の面で勝れている
サイリスタ等の半導体を使用した静止型の可変周波数電
源装置が採用されつつある。この静止型可変周波数電源
装置は、サイリスタのブリツジ結線を主体に構成された
電力変換器であり、各サイリスタの点孤位相を制御する
ことにより、所定の交流出力が得られるように構成され
ている。一方、この静止型可変周波数電源装置では、次
のような問題があつた。つまり、Ｍ−Ｇセツトの場合、
その出力周波数はすくい管を操作して流体継手のケーシ
ング内油量を変化させることにより機械式で制御されて
おり、その出力周波数の変化は急速ではなく、また、す
くい管位置をロツクすることにより、出力周波数の変化
を止めることができた。しかし、静止型可変周波数電源
の場合には内部の制御が応答の速い電子式で制御されて
いるため、上位の制御系に故障が発生すると、出力周波
数が急変する可能性があり、また、それを停止させるこ
とにより、出力周波数の変化をとめる機器も備えていな
い。原子炉の運転中に、万一、出力周波数が急変し、こ
れにより冷却材再循環流量が急変すると、原子炉及び関
連設備に多大な影響を及ぼす可能性がある。すなわち、
冷却材再循環流量が急激に増大すると、原子炉出力の急
激な上昇を招き、また、冷却材再循環流量が急激に減少
すると、炉心の熱除去が悪化し、炉心を損傷させる可能
性がある。以上述べたように、BWRの冷却材再循環ポン
プの駆動電源として静止型可変周波数電源装置を使用す
る場合には、上位の制御系の故障に対し、その出力周波
数の変化を小さくする対策が必要である。これに対し、
出力周波数の変化率を抑制する装置は、特開昭56-3589
号公報にあるように速度の変化率制限を設けて対処され
てきた。ところがこの方式では上位の制御系にある速度
指令装置の故障時、下限の周波数まで低下するといつた
問題があつた。On the other hand, this variable frequency power supply device employs an MG set (motor generator) which includes a fluid coupling and changes the slip of the fluid coupling to change the frequency. But,
Recently, static variable frequency power supply devices using semiconductors such as thyristors, which are superior in terms of system efficiency and control response, are being adopted. This static variable frequency power supply device is a power converter mainly composed of bridge connection of thyristors, and is configured to obtain a predetermined AC output by controlling the firing phase of each thyristor. . On the other hand, this static variable frequency power supply device has the following problems. That is, in the case of MG set,
The output frequency is mechanically controlled by operating the rake pipe and changing the amount of oil in the casing of the fluid coupling.The change in the output frequency is not rapid, and by locking the rake pipe position. , I was able to stop the change in the output frequency. However, in the case of a static variable frequency power supply, the internal control is controlled by an electronic system with a fast response, so if a failure occurs in the upper control system, the output frequency may suddenly change, and There is also no equipment to stop the change in output frequency by stopping. If the output frequency suddenly changes during the operation of the reactor, which causes a sudden change in the coolant recirculation flow rate, it may significantly affect the reactor and related facilities. That is,
If the coolant recirculation flow rate increases rapidly, the reactor output will rise sharply, and if the coolant recirculation flow rate decreases sharply, the heat removal of the core will deteriorate and may damage the core. . As described above, when using a static variable frequency power supply as the drive power source for the BWR coolant recirculation pump, it is necessary to take measures to reduce the change in its output frequency when the control system fails. Is. In contrast,
A device for suppressing the rate of change in output frequency is disclosed in Japanese Patent Laid-Open No. 56-3589.
This has been dealt with by setting a speed change rate limit as described in Japanese Patent Publication No. However, in this method, when the speed command device in the upper control system fails, there is a problem that the frequency drops to the lower limit frequency.
本発明の目的は、制御系等に万一故障が発生した場合で
も、BWR事故の発生を防止できる冷却材再循環ポンプ駆
動用静止型可変周波数電源装置を提供することにある。An object of the present invention is to provide a static variable frequency power supply device for driving a coolant recirculation pump, which can prevent a BWR accident even if a failure occurs in a control system or the like.
上記の目的は、静止型電源装置の制御系内の速度変化率
リミツタとV/F（電圧−周波数）変換器の間に制御状態
量を記憶するメモリを加え、このメモリ値を、速度指令
装置の故障信号で固定することにより原子炉出力の変化
を抑制できる。また、メモリを変化率リミツタの後段に
設置することにより、速度の変化量は速度指令装置の検
出遅れ時間があつても微少な変動に抑制することができ
る。The purpose of the above is to add a memory for storing the control state quantity between the speed change rate limiter and the V / F (voltage-frequency) converter in the control system of the static power supply device, and to add this memory value to the speed command device. By fixing with the failure signal of, the change of the reactor output can be suppressed. Further, by installing the memory in the subsequent stage of the change rate limiter, the amount of change in speed can be suppressed to a slight change even if there is a detection delay time of the speed command device.
制御系内に設けたメモリは、速度指令装置の故障時、そ
の故障信号によりトリガされ、その時点でのデータを保
持する。このため、速度指令装置に故障が生じて、速度
指令装置の出力が急変しても、電源装置本体への指令値
は微少変動に抑制される。The memory provided in the control system is triggered by the failure signal when the speed command device fails, and holds the data at that time. Therefore, even if a failure occurs in the speed command device and the output of the speed command device suddenly changes, the command value to the power supply device body is suppressed to a slight fluctuation.
このため、電源装置の出力、ひいては、BWRの出力が変
化することを抑制できる。Therefore, it is possible to prevent the output of the power supply device, and eventually the output of the BWR, from changing.
以下、本発明の実施例を図を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は、本発明の一実施例の電源装置の構成を示す。
図において、１は交流母線、２は遮断器を示し、交流母
線１は遮断器２を介して、変圧器３に接続されている。
変圧器３の二次巻線端子は整流器４の交流入力側に接続
されている。整流器４の直流出力端は直流リアクトル５
を介してインバータ６の直流端子に接続されている。イ
ンバータ６の出力は変圧器７を介して、再循環ポンプを
駆動する電動機８に接続されている。一方、９〜17は静
止型電源装置の制御系の各ブロツクを示す。この制御系
は次のように構成されている。すなわち、速度指令装置
９から与えられた速度信号は、速度下限リミツタ10、速
度変化率リミツタ11を介し、メモリ12に伝達され、この
信号は一方は電源装置の出力電圧を帰還量として制御す
る電圧制御器15へ、他方は出力周波数を抑制するV/F変
換器13に伝達される。このV1F変換器13の出力はリング
カウンタ14を介してインバータ部へ伝達され、電源装置
の出力周波数を決定する。また、電圧制御器15の出力
は、整流器４の入力電流値を帰還量として制御する電流
制御系16へ伝達され、更に、位相調整器17を介して整流
器の各サイリスタへ伝達され、電源装置の出力電圧を決
定する。静止型可変周波数電源装置の制御系において、
速度指令装置９に故障が発生すると、速度指令装置９は
故障信号を発生する。メモリ12は速度指令装置９の故障
信号を受信し、その時点でV/F変換器13及び電圧制御器1
5へのデータを変化させないように保持し、その入力に
よらず一定の信号を出力する。つまり、速度指令装置の
故障が発生しても、V/F変換器13、電圧制御器15への制
御信号は、速度制御器の故障信号がメモリへ伝達される
微少時間のみの変動に抑制でき、従つて、BWRの安全性
が確保される。FIG. 1 shows the configuration of a power supply device according to an embodiment of the present invention.
In the figure, 1 indicates an AC busbar, 2 indicates a circuit breaker, and the AC busbar 1 is connected to a transformer 3 via a circuit breaker 2.
The secondary winding terminal of the transformer 3 is connected to the AC input side of the rectifier 4. The DC output end of the rectifier 4 is a DC reactor 5
Is connected to the DC terminal of the inverter 6 via. The output of the inverter 6 is connected via a transformer 7 to an electric motor 8 which drives a recirculation pump. On the other hand, 9 to 17 show blocks of the control system of the static power supply. This control system is configured as follows. That is, the speed signal given from the speed command device 9 is transmitted to the memory 12 via the speed lower limit limiter 10 and the speed change rate limiter 11, one of which is a voltage for controlling the output voltage of the power supply device as a feedback amount. The other is transmitted to the controller 15 and the V / F converter 13 that suppresses the output frequency. The output of the V1F converter 13 is transmitted to the inverter unit via the ring counter 14 and determines the output frequency of the power supply device. Further, the output of the voltage controller 15 is transmitted to the current control system 16 that controls the input current value of the rectifier 4 as a feedback amount, and further transmitted to each thyristor of the rectifier via the phase adjuster 17, and the Determine the output voltage. In the control system of the static variable frequency power supply,
When a failure occurs in the speed command device 9, the speed command device 9 generates a failure signal. The memory 12 receives the failure signal of the speed command device 9, and at that time, the V / F converter 13 and the voltage controller 1
Holds the data to 5 so that it does not change, and outputs a constant signal regardless of its input. In other words, even if a failure of the speed command device occurs, the control signal to the V / F converter 13 and the voltage controller 15 can be suppressed to a fluctuation only for a minute time when the failure signal of the speed controller is transmitted to the memory. Therefore, the safety of BWR is secured.
第２図に速度変化率リミツタ11及びメモリ12の回路構成
図を示す。速度変化率リミツタは入力ａと出力ｂを減算
器21で減算し、その出力を比較器22により加速するか減
速するかを判定する。これを積分器24により所定変化率
で変化させ、入力ａと出力ｂが等しくなつた時点でその
出力は一定となる。この回路の比較器22と積分器24との
間に開閉器23を設け、通常は閉としておき、速度指令装
置の故障信号により開とすれば、その時点で出力ｂは固
定され、データを保持することができる。FIG. 2 shows a circuit configuration diagram of the speed change rate limiter 11 and the memory 12. The speed change rate limiter subtracts the input a and the output b by the subtractor 21, and the comparator 22 determines whether the output is accelerated or decelerated. This is changed at a predetermined change rate by the integrator 24, and when the input a and the output b become equal, the output becomes constant. If a switch 23 is provided between the comparator 22 and the integrator 24 of this circuit and is normally closed and is opened by the failure signal of the speed command device, the output b is fixed at that time and the data is held. can do.
第３図は本発明に関する実施例に係るもので、第１図に
示した制御系の一部のみを示す。図示しない部分は第１
図と同一である。この実施例が前述の実施例と異なるの
は、メモリの位置及びそのデータ値であり、通常の場
合、このメモリ12′は制御系から解列されていて、速度
指令装置の故障信号により制御系に併入される。また、
このメモリ値は予め速度変化率リミツタ11とは異なるか
又は、同一の変化率リミツタをかけたデータ、あるい
は、故障検出の遅れ分だけ前のデータメモリしておく。
このようにすれば、前記実施例と同様の効果を奏すこと
ができる。FIG. 3 relates to an embodiment relating to the present invention, and shows only a part of the control system shown in FIG. The first part is not shown
It is the same as the figure. This embodiment differs from the previous ones in the position of the memory and its data values. Normally, this memory 12 'is decoupled from the control system and the control system is triggered by a fault signal from the speed commander. Will be merged into. Also,
This memory value is different from the speed change rate limiter 11 in advance, or data obtained by applying the same change rate limiter, or a data memory before the failure detection delay is stored.
With this configuration, the same effect as that of the above-described embodiment can be obtained.
本発明によれば、静止型可変周波数電源装置において、
速度指令装置の故障時に生じる電源装置の出力の変化、
つまり、BWR出力の変化を抑制することが可能となる。According to the present invention, in the static variable frequency power supply device,
Changes in the output of the power supply that occur when the speed command device fails,
That is, it is possible to suppress the change in BWR output.
第１図は本発明の一実施例の制御系統図、第２図は第１
図のメモリーの回路構成図、第３図は本発明の他の実施
例の回路構成図である。 ９……速度制御器、10……速度下限リミツタ、11……速
度変化率リミツタ。FIG. 1 is a control system diagram of an embodiment of the present invention, and FIG.
FIG. 3 is a circuit configuration diagram of the memory shown in FIG. 3, and FIG. 3 is a circuit configuration diagram of another embodiment of the present invention. 9: Speed controller, 10: Lower speed limiter, 11: Speed change rate limiter.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０２Ｍ 7/48 Ｍ 9181−5Ｈ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location H02M 7/48 M 9181-5H
Claims (1)
動する静止型可変周波数電源装置において、 その出力を制御する速度指令装置の故障発生のとき、そ
の故障信号により速度変化率リミツタの出力を固定する
手段を設けたことを特徴とする静止型可変周波数電源装
置。1. In a static variable frequency power supply device for driving a coolant recirculation pump of a boiling water reactor, when a failure occurs in a speed command device controlling its output, a speed change rate limiter is activated by the failure signal. A static variable frequency power supply device comprising means for fixing an output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62199782A JPH0713666B2 (en) | 1987-08-12 | 1987-08-12 | Stationary variable frequency power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62199782A JPH0713666B2 (en) | 1987-08-12 | 1987-08-12 | Stationary variable frequency power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6443796A JPS6443796A (en) | 1989-02-16 |
| JPH0713666B2 true JPH0713666B2 (en) | 1995-02-15 |
Family
ID=16413518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62199782A Expired - Lifetime JPH0713666B2 (en) | 1987-08-12 | 1987-08-12 | Stationary variable frequency power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713666B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6193995A (en) * | 1984-10-15 | 1986-05-12 | 株式会社日立製作所 | Recirculating flow controller for nuclear reactor |
-
1987
- 1987-08-12 JP JP62199782A patent/JPH0713666B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6443796A (en) | 1989-02-16 |
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