JPH02307320A - Forced wind cooling device for electric current-fed conductor - Google Patents
Forced wind cooling device for electric current-fed conductorInfo
- Publication number
- JPH02307320A JPH02307320A JP1127218A JP12721889A JPH02307320A JP H02307320 A JPH02307320 A JP H02307320A JP 1127218 A JP1127218 A JP 1127218A JP 12721889 A JP12721889 A JP 12721889A JP H02307320 A JPH02307320 A JP H02307320A
- Authority
- JP
- Japan
- Prior art keywords
- electric blower
- current
- standby
- conductor
- electric
- 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
- 239000004020 conductor Substances 0.000 title claims abstract description 28
- 238000001816 cooling Methods 0.000 title claims description 24
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000005191 phase separation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Installation Of Bus-Bars (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、常用および予備用電動送風機を交互に運転
して１発電所の相分離母線などのような電流導体を強制
的に風冷するための装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention is a method of forcibly cooling a current conductor such as a phase-separated bus in a power plant by alternately operating regular and standby electric blowers. It relates to a device for.
［従来の技術］
第２図は例えば特開昭６１−２２９９９７号公報に示さ
れた従来の電流導体の風冷装置を示す概略構成図であり
、ここでは、常用電動送風機の運転状態を示し、電流導
体としての相分離母線を冷却する場合について説明する
。[Prior Art] Fig. 2 is a schematic configuration diagram showing a conventional air cooling device for current conductors disclosed in, for example, Japanese Unexamined Patent Publication No. 61-229997. A case will be described in which a phase separation bus bar serving as a current conductor is cooled.
第２図において、１，２はそれぞれ交互に運転される常
用および予備用電動送風機で、これらの電動送風機１，
２は、後述する相分離母線１１め導体１１ａを風冷すべ
く通風ダクト１２を介して相分離母線１１へ冷却風を送
風して循環流をつくるためのものである。３，４はそれ
ぞれ電動送風機１，２を駆動するモータ、５は予備用電
動送風機２の運転時に常用電動送風機１へ冷却風を分流
する配管゛、６は常用電動送風機１の運転時に予備用電
動送風機２へ冷却風（第２図中の矢印参照）を分流する
配管、７は各電動送風機１，２がらの冷動態を所定方向
に送るためのダクト、８は供給側風路を切り換える風路
切換ダンパ、９は発電機（Ｇ）、１０は主変圧器、１１
はこれらの発電機９と主変圧器１０との間を接続する相
分に母線である。In Fig. 2, reference numerals 1 and 2 are electric blowers for regular use and backup, respectively, which are operated alternately.
Reference numeral 2 is for blowing cooling air to the phase separation bus 11 through the ventilation duct 12 to create a circulating flow in order to cool the phase separation bus 11 and conductor 11a, which will be described later. 3 and 4 are the motors that drive the electric blowers 1 and 2, respectively; 5 is the piping that diverts cooling air to the regular electric blower 1 when the backup electric blower 2 is in operation; 6 is the piping that is used to divert the cooling air to the regular electric blower 1 when the backup electric blower 1 is in operation. Piping that separates cooling air (see the arrow in Figure 2) to the blower 2; 7 is a duct that sends the cooling air from each electric blower 1 and 2 in a predetermined direction; 8 is an air path that switches the supply side air path. Switching damper, 9 is a generator (G), 10 is a main transformer, 11
is a bus bar for the phase connecting between these generators 9 and the main transformer 10.
次に動作について説明する。電動送風機１または２の一
方が、モータ３または４により運転され、通風ダクト１
２を介して相分離母線１１の導体１１ａに冷却風を送っ
ている。電動送風機１または２のいずれが運転されてい
る場合にも、風路切換ダンパ８により風路構成された冷
却風の一部が、配管６または５を介して待機中の他方の
電動送風機２または１へ導かれる。Next, the operation will be explained. One of the electric blowers 1 or 2 is driven by a motor 3 or 4, and the ventilation duct 1
2, cooling air is sent to the conductor 11a of the phase separation bus 11. Even when either the electric blower 1 or 2 is in operation, a part of the cooling air formed in the air path by the air path switching damper 8 is routed through the piping 6 or 5 to the other electric blower 2 or 2 that is on standby. It will lead you to 1.
これにより、待機中の電動送風機１または２が低速で回
転し続けることになるので、上記公報にも記載されてい
るように、停止中の電動送風機１または２の駆動部に損
傷等が発生するのを防止できる。As a result, the electric blower 1 or 2 that is on standby will continue to rotate at a low speed, which may cause damage to the drive unit of the electric blower 1 or 2 that is stopped, as stated in the above publication. can be prevented.
［発明が解決しようとする課題］
従来の電流導体の風冷装置は以上のように構成されてお
り、待機中の電動送風機に一定風量分流していたので、
相分離母線１１への冷却風を十分確保するためには分流
分の風景を多くしなければならず、多くのエネルギを浪
費するという課題があった。[Problems to be Solved by the Invention] Conventional current conductor air cooling devices are configured as described above, and a fixed amount of air is diverted to the standby electric blower.
In order to ensure sufficient cooling air to the phase separation bus 11, it is necessary to increase the number of branched flows, which poses the problem of wasting a lot of energy.
この発明は上記のような課題を解消するためになされた
もので、風量分流を行なうことなく待機中の電動送風機
を安定的かつ経済的な低速回転状態に維持できるように
して、運転中の電動送風機の省エネルギ化を実現すると
ともに、電動送風機の駆動部への損傷が発生しない信頼
性の高い電流導体の風冷装置を得ることを目的とする。This invention was made in order to solve the above-mentioned problems, and it is possible to maintain a standby electric blower in a stable and economical low-speed rotation state without dividing the air volume. The purpose of the present invention is to realize an energy-saving blower and to obtain a highly reliable current conductor air cooling device that does not cause damage to the drive part of the electric blower.
［課題を解決するための手段］
この発明に係る電流導体の風冷装置は、電流導体を流れ
る電流値を検出する電流検出手段と、同電流検出手段か
らの検出結果に基づき各電動送風機の作動状態を制御す
べく常用電動送風機の電源回路および予備用電動送風機
の電源回路にそれぞれ直列的に介装されたインバータ装
置と、上記電動送風機のうち待機中である一方の電動送
風機を上記インバータ装置により低速回転駆動させる制
御回路とをそなえたものである。[Means for Solving the Problems] An air cooling device for a current conductor according to the present invention includes a current detection means for detecting the value of the current flowing through the current conductor, and an operation of each electric blower based on the detection result from the current detection means. An inverter device is installed in series with the power supply circuit of the regular electric blower and the power supply circuit of the standby electric blower to control the state, and one of the electric blowers that is on standby is operated by the inverter device. It is equipped with a control circuit for driving low-speed rotation.
［作 用］
この発明における電流導体の風冷装置では、運転中の電
動送風機は、電流検出手段にて検出された電流導体を流
れる電流値に応じ、インバータ装置により可変速運転さ
れる一方、待機中の電動送風機は、制御回路により、イ
ンバータ装置にて常時低速で回転駆動される。[Function] In the current conductor air cooling device of the present invention, the electric blower in operation is operated at variable speed by the inverter device according to the current value flowing through the current conductor detected by the current detection means, while the electric blower is in standby mode. The electric blower inside is constantly driven to rotate at a low speed by an inverter device by a control circuit.
［発明の実施例］
以下、この発明の一実施例を図について説明する。第１
図はこの発明の一実施例による電流導体の風冷装置を示
す概略構成図であり、図中、既述の符号と同一のものは
同一部分を示しているので、その説明は省略する。また
、本実施例においても、電流導体としての相分離母線を
冷却する場合について説明する。なお、第１図中には、
常用電動送風機の運転状態が示されている。[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1st
The figure is a schematic configuration diagram showing an air cooling device for a current conductor according to an embodiment of the present invention. In the figure, the same reference numerals as those described above indicate the same parts, and the explanation thereof will be omitted. Also in this embodiment, a case will be described in which a phase separation bus bar serving as a current conductor is cooled. In addition, in Figure 1,
The operating status of the regular electric blower is shown.
第１図において、１３は導体１１ａを流れる回路電流値
を検出するための変流器（電流検出手段）、１４はこの
変流器１３に電気的に接続されて電流検出信号を所定の
制御信号に変換するトランスデユーサ、１５はトランデ
ューサ１４からの制御信号に基づいて常用電動送風機１
を可変速運転し吐出風量を必要最小限に制御すべくこの
電動送風機１の電源回路（図示せず）に直列的に介装さ
れたインバータ装置（ＩＮＶ）、１６は予備用電動送風
機２の電源回路（図示せず）に前記インバータ装置１５
と同様の目的で設けられたインバータ装置（ＩＮＶ）、
１７は待機中の電動送風機１または２をインバータ装置
１５または１６により低速回転駆動させるための制御回
路、１８ａ、１８ｂはそれぞれ１−ランスデューサ１４
．制御装置１７からの制御信号をインバータ装［１５，
１Ｇのいずれか一方に切換・接続するための切換スイッ
チである。In FIG. 1, 13 is a current transformer (current detection means) for detecting the value of the circuit current flowing through the conductor 11a, and 14 is electrically connected to this current transformer 13 to convert the current detection signal into a predetermined control signal. A transducer 15 converts the electric blower 1 into
An inverter device (INV) is connected in series to the power supply circuit (not shown) of the electric blower 1 in order to operate the electric blower at variable speed and control the discharge air volume to the necessary minimum. 16 is the power source of the backup electric blower 2. The inverter device 15 is connected to a circuit (not shown).
Inverter device (INV) provided for the same purpose as
17 is a control circuit for driving the electric blower 1 or 2 on standby to rotate at low speed by the inverter device 15 or 16, and 18a and 18b are 1-transducer 14, respectively.
．． The control signal from the control device 17 is transferred to the inverter device [15,
This is a changeover switch for switching/connecting to either 1G.
次に、本実施例の装置の動作について説明する。Next, the operation of the apparatus of this embodiment will be explained.
変流器１３からの導体１１ａの回路電流値は、トランデ
ューサ１４で所定の制御信号に変換された後、切換スイ
ッチ１８ａを介してインバータ装置１５または１６へ送
られ、このインバータ装置１５または１６のいずれか一
方により、常用電動送風機１または予備用電動送風機２
のいずれか一方が可変速運転される。The circuit current value of the conductor 11a from the current transformer 13 is converted into a predetermined control signal by the transducer 14, and then sent to the inverter device 15 or 16 via the changeover switch 18a. Regular use electric blower 1 or standby electric blower 2 depending on either one.
Either one of them is operated at variable speed.
これに対し、トランスデユーサ１４からの制御信号を受
けない待機中の電動送風機２または１は、切換スイッチ
１８ｂを介して制御回路１７からの制御信号を受けるイ
ンバータ装置１６または１５により待機中は常時低速で
回転駆動される。On the other hand, the electric blower 2 or 1 that is on standby and does not receive the control signal from the transducer 14 is always operated by the inverter device 16 or 15 that receives the control signal from the control circuit 17 via the changeover switch 18b. Driven in rotation at low speed.
一般に、電動送風機１，２におけるモータ３゜４の所要
出力は、モータ回転数の３乗に比例するため、例えば定
格６０Ｈｚの運転に対し１０Ｈｚの低速回転をさせれば
、（１０／６０）’ｘｌＯＯ与０．５％の出力でよく、
消費電力が極めて少ない。Generally, the required output of the motors 3゜4 in the electric blowers 1 and 2 is proportional to the cube of the motor rotation speed, so for example, if the rated 60Hz operation is made to rotate at a low speed of 10Hz, the required output will be (10/60)' An output of 0.5% given xlOO is sufficient,
Power consumption is extremely low.
従って、待機中の電動送風機１または２をインバータ装
置１５または１６で低速回転させることは経済的である
。Therefore, it is economical to rotate the standby electric blower 1 or 2 at low speed using the inverter device 15 or 16.
このように、本実施例の装置によれば、運転中の電動送
風機１または２は、変流器１３にて検出された導体１１
ａを流れる電流値に応じ、インバータ装置１５または１
６により可変速運転される一方、待機中の電動送風機２
または１は、制御回路１７により、インバータ装置１６
または１５にて常時低速で回転駆動されるので、従来の
ごとく風量分流を行なうことなく待機中の電動送風機２
または１を安定的かつ経済的な低速回転状態に維持でき
、運転中の電動送風機１または２の省エネルギ化が実現
されるとともに、長期間にわたって待機中の電動送風機
２または１の駆動部等への損傷を防止できる信頼性の高
い装置が得られる。As described above, according to the device of this embodiment, the electric blower 1 or 2 in operation is controlled by the conductor 11 detected by the current transformer 13.
Depending on the current value flowing through a, the inverter device 15 or 1
While the electric blower 2 is operated at variable speed by the electric blower 6, it is on standby.
or 1, the control circuit 17 controls the inverter device 16
Or, since the electric blower 2 is always rotated at low speed at 15, the electric blower 2 is on standby without dividing the air volume as in the conventional case.
or 1 can be maintained in a stable and economical low-speed rotation state, realizing energy savings for the electric blower 1 or 2 during operation, and also for the drive unit of the electric blower 2 or 1 that is on standby for a long period of time. This results in a highly reliable device that can prevent damage to the device.
なお、上記実施例では、相分離母線１１の風冷装置につ
いて説明したが、本発明は、これに限定されるものでは
なく、電流を通電する他の導電装置であれば同様にして
適用され上記実施例と同様の効果を奏する。また、上記
実施例では、密閉循環式冷却風路構成としているが、開
放冷却式風路構成であってもよく、この場合も上記実施
例と同様の効果を奏する。Although the above embodiment describes an air cooling device for the phase separation bus 11, the present invention is not limited to this, and can be similarly applied to any other conductive device that conducts current. The same effects as in the embodiment are achieved. Further, in the above embodiment, a closed circulation type cooling air passage configuration is used, but an open cooling type air passage configuration may be used, and in this case, the same effects as in the above embodiment can be obtained.
［発明の効果］
以上のように、この発明によれば、運転中の電動送風機
を、電流検出手段からの電流導体の電流値に応じインバ
ータ装置により可変速運転する一方、待機中の電動送風
機を、制御回路によりインバータ装置にて常時低速で回
転駆動するように構成したので、運転中の電動送風機の
省エネルギ化が実現できるほか、待機中の電動送風機に
おいては、安定的かつ経済的な低速回転状態を維持でき
、長期間にわたって駆動部等への損傷が発生しない信頼
性の高いものが得られる効果がある。[Effects of the Invention] As described above, according to the present invention, the electric blower in operation is operated at variable speed by the inverter device according to the current value of the current conductor from the current detection means, while the electric blower in standby is operated at variable speed. Since the control circuit is configured so that the inverter device always rotates at a low speed, it is possible to save energy while the electric blower is in operation. This has the effect of providing a highly reliable product that maintains its condition and does not cause damage to the drive unit or the like over a long period of time.
第１図はこの発明の一実施例による電流導体の風冷装置
を示す概略構成図、第２図は従来の電流導体の風冷装置
を示す概略構成図である。
図において、１−常用電動送風機、２−予備用電動送風
機、１１ ａ −導体、１３変流器（電流検出手段）、
１５．１６−・−インバータ装置、１７−制御回路。
なお１図中、同一の符号は同一、又１ま相当部分を示し
ている。FIG. 1 is a schematic configuration diagram showing an air cooling device for a current conductor according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing a conventional air cooling device for a current conductor. In the figure, 1 - regular electric blower, 2 - standby electric blower, 11 a - conductor, 13 current transformer (current detection means),
15.16--Inverter device, 17-Control circuit. In addition, in FIG. 1, the same reference numerals indicate the same or corresponding parts.
Claims (1)
用電動送風機および予備用電動送風機をそなえてなる電
流導体の風冷装置において、上記電流導体を流れる電流
値を検出する電流検出手段と、同電流検出手段からの検
出結果に基づき上記の各電動送風機の作動状態を制御す
べく上記常用電動送風機の電源回路および上記予備用電
動送風機の電源回路にそれぞれ直列的に介装されたイン
バータ装置とがそなえられるとともに、上記電動送風機
のうち待機中である一方の電動送風機を上記インバータ
装置により低速回転駆動させる制御回路がそなえられた
ことを特徴とする電流導体の風冷装置。In a current conductor air cooling device comprising a regular electric blower and a standby electric blower that blow cooling air to the current conductor to cool the current conductor, a current detection means for detecting the value of the current flowing through the current conductor; , an inverter device interposed in series with the power circuit of the regular electric blower and the power circuit of the standby electric blower to control the operating state of each of the electric blowers based on the detection result from the current detection means. 1. A current conductor air cooling device comprising: a control circuit for causing one of the electric blowers on standby to rotate at a low speed by the inverter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1127218A JP2715546B2 (en) | 1989-05-18 | 1989-05-18 | Winding device for current conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1127218A JP2715546B2 (en) | 1989-05-18 | 1989-05-18 | Winding device for current conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02307320A true JPH02307320A (en) | 1990-12-20 |
| JP2715546B2 JP2715546B2 (en) | 1998-02-18 |
Family
ID=14954653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1127218A Expired - Lifetime JP2715546B2 (en) | 1989-05-18 | 1989-05-18 | Winding device for current conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2715546B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6236184B1 (en) | 1998-12-23 | 2001-05-22 | Hamilton Sundstrand Corporation | Variable speed cooling fan control |
-
1989
- 1989-05-18 JP JP1127218A patent/JP2715546B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6236184B1 (en) | 1998-12-23 | 2001-05-22 | Hamilton Sundstrand Corporation | Variable speed cooling fan control |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2715546B2 (en) | 1998-02-18 |
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