JPS6111831A - Dc transformation device - Google Patents
Dc transformation deviceInfo
- Publication number
- JPS6111831A JPS6111831A JP59133994A JP13399484A JPS6111831A JP S6111831 A JPS6111831 A JP S6111831A JP 59133994 A JP59133994 A JP 59133994A JP 13399484 A JP13399484 A JP 13399484A JP S6111831 A JPS6111831 A JP S6111831A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- reactance
- transformer
- capacity
- equipment
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/70—Regulating power factor; Regulating reactive current or power
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は直流用変電装置に関するもので、詳しくは電
鉄用等の高配用変圧器を有さない直流用変電装置に係る
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a direct current transformer, and more particularly to a direct current transformer that does not have a high distribution transformer, such as for electric railways.
従来より、高配用変圧器を有する直流用変電所において
は、その力率や波形を改善するための装置を、高配用変
圧器の2次側に設置することが行われている。それは、
高圧用汎用機器を使用し得るために、最も経済的であり
、しかも簡便であるとの理由による。Conventionally, in a DC substation having a high distribution transformer, a device for improving the power factor and waveform has been installed on the secondary side of the high distribution transformer. it is,
This is because it is the most economical and simple method since it can use general-purpose equipment for high pressure.
ところで、上記のような高配用変圧器を有さない直流用
変電所においては、力率や波形を改善するための装置を
特高母線へ直接設置する必要がある。′この理由は、整
流器変圧器の2次側に力率や波形の改善装置を設置した
場合には、整流器に悪影響が生じてしまうということで
ある。しかしながら、上記のように力率や波形の改善装
置を特高母線に直接設置した場合には、一般に必要とさ
れるコンデンサ容量が小さく、全構成機器を特高機器と
しなければならないためきわ吟て不経済であるという問
題が゛ある。By the way, in a DC substation that does not have a high distribution transformer as described above, it is necessary to install a device for improving the power factor and waveform directly on the extra high voltage bus. 'The reason for this is that if a power factor or waveform improvement device is installed on the secondary side of the rectifier transformer, it will have an adverse effect on the rectifier. However, if a power factor or waveform improvement device is installed directly on the extra-high busbar as described above, the required capacitor capacity is generally small and all components must be made of extra-high-density equipment, so it must be carefully considered. There is a problem that it is uneconomical.
この発明は上記に鑑みなされたもので”、その目的は、
高配用変圧器を有さない場合であっても、整流器と並列
に設置することが可能であり、したがって経済的な力率
及び/又は波形の改善装置を提供することにある。This invention has been made in view of the above, and its purpose is to
Even in the case of not having a high distribution transformer, it is possible to install it in parallel with a rectifier, and therefore it is an object of the present invention to provide an economical power factor and/or waveform improving device.
本発明者は上記につき種々検討した結果、コンデンサ設
備に、相間短絡の期間となる転流期間において、短絡電
流を制限する転流リアクタンスに見合うリアクタンス値
を有する直列リアクタンスを設けておけば、整流器に悪
影響がなく、且つ力 。As a result of various studies regarding the above, the present inventor found that if the capacitor equipment is provided with a series reactance having a reactance value commensurate with the commutation reactance that limits the short-circuit current during the commutation period, which is the period of phase-to-phase short circuit, the rectifier No negative effects and strength.
率改善及び/又は波形改善効果が得られることを知見し
、本発明をなすに至った。The present inventors have discovered that the rate improvement and/or waveform improvement effect can be obtained, and have come to form the present invention.
すなわちこの発明の直流用変電装置は、特高母線を主整
流回路を介して負荷へと接続して成る直流用変電装置に
おいて、上記整流回路とは並列に、コンデンサと、この
コンデンサに直列に接続されたリアクトルとをそれぞれ
挿入したことを特徴とするものとなる。That is, the DC transformer of the present invention is a DC transformer in which an extra-high busbar is connected to a load via a main rectifier circuit, in which a capacitor is connected in parallel to the rectifier circuit, and a capacitor is connected in series to the capacitor. This is characterized by the fact that a reactor is inserted into each reactor.
次にこの発明の直流用変電装置の具体的な実施例につき
、図面を参照しつつ詳細に説明する。Next, specific embodiments of the DC transformer of the present invention will be described in detail with reference to the drawings.
まず第1図に、高圧回路を有さない直流変電装置の直接
形コンデンサ設備を示すが、図において、1は特高母線
、2は整流器変圧器、3は整流器、4はコンデンサ設備
番それぞれ示しており、コンデンサ設備4は、コンデン
サ5と、このコンデンサ5に直列に接続されたリアクト
ル6を有している。First, Figure 1 shows the direct capacitor equipment of a DC transformer that does not have a high-voltage circuit. The capacitor equipment 4 includes a capacitor 5 and a reactor 6 connected to the capacitor 5 in series.
上記のような装置において、いま転流リアクタンスをも
とにして、設置可能なコンデンサ設備容量を計算すると
、次のようになる。なお、式中における記号は次の通り
である。In the above-mentioned device, the capacitor installation capacity that can be installed is calculated as follows based on the commutation reactance. Note that the symbols in the formula are as follows.
PT:)ランス容量(KVA )
PC:コンデンサ設備容量(KVA )XT :主整流
トランスの実りアクタンス(Ω)XL ;コンデンサ設
備の直列リアクトルのりアクタンス(Ω)
XC:コンデンサ設備のコンデンサのりアクタンス(Ω
)
α :リアクトル比=XL/XC(単位法)β : X
L /XT (単位法)ZT:)ランスのリアクタ
ンス(1pL位法)上記式から、
となる。PT:) Lance capacity (KVA) PC: Capacity of capacitor equipment (KVA) XT: Actual actance of main rectifier transformer (Ω) XL; Actance of series reactor of capacitor equipment (Ω) XC: Actance of capacitor equipment of capacitor equipment (Ω)
) α: Reactor ratio = XL/XC (unit method) β: X
L/XT (unit method) ZT:) Lance reactance (1 pL order method) From the above formula, it becomes as follows.
上記式から、次の第1表を得る。From the above formula, the following Table 1 is obtained.
第1表
第2図は、上記第1表を図示したもので、コンデンサの
直列リアクトルのリアクタンスと転流す゛アクタンスの
比であるβをパラメータとして、コンデンサ設備のりア
クタ・シス率αを横軸に、設置可能なコンデンサ容量を
縦軸として、α値とPC/PTO値の関係を示している
。Table 1 and Figure 2 are diagrams of Table 1 above, where β, which is the ratio of the reactance of the series reactor of the capacitor to the commutating actance, is taken as a parameter, and the capacitor equipment reactor cis ratio α is plotted on the horizontal axis. , shows the relationship between the α value and the PC/PTO value, with the vertical axis representing the installable capacitor capacity.
上記の図において、力率改善のみを目標とするときには
、コンデンサもリアクトルも汎用品を使用する方が経済
的であるから、コンデンサ設備の高調波含有率を規定値
以下におさめなければならない。したがって、このため
には大きなα値を選択すればよい。In the above diagram, when the only goal is to improve the power factor, it is more economical to use general-purpose capacitors and reactors, so the harmonic content of the capacitor equipment must be kept below the specified value. Therefore, for this purpose, a large α value may be selected.
一方、高調波の吸収を目標とする場合には、小さなα値
を選択すればよい。例えば、第5高調波に対してα=4
%を選択すると、β=2位を考えないと、設備の高調波
含有率は著しく大きくなる。On the other hand, if the goal is to absorb harmonics, a small α value may be selected. For example, for the 5th harmonic α=4
%, the harmonic content of the equipment becomes significantly large unless β=2nd place is considered.
この場合、PC/PTは17%程度となり、設備の高調
波含有率は100%程度となる。したがって、コンデン
サもリアクトルも特殊なものを必要とすることになる。In this case, PC/PT will be about 17%, and the harmonic content of the equipment will be about 100%. Therefore, special capacitors and reactors are required.
以上のように、上記装置においては、上記(11式を満
足するような場合には、力率及び/又は波形の改善を行
うことが可能となる。As described above, in the above-mentioned device, it is possible to improve the power factor and/or waveform when the above-mentioned formula (11) is satisfied.
以上にこの発明の直流変電装置の一実施例の説明をした
が、この発明の直流変電装置は上記実施例に限定される
ものではなく、この発明の目的の範囲内において種々変
更して実施し得るものであることは、明白であろう。Although one embodiment of the DC transformer of the present invention has been described above, the DC transformer of the present invention is not limited to the above embodiment, and can be implemented with various modifications within the scope of the purpose of the present invention. It's obvious that you can get it.
この発明の直流変電装置は上記のように構成されたもの
であり、したがってこの発明によれば、高配用変圧器を
有さない場合であっても、整流器と並列に設置すること
が可能であり、したがって経済的な力率及び/又は波形
の改善装置を提供することが可能となる。The DC transformer of this invention is configured as described above, and therefore, according to this invention, even if it does not have a high distribution transformer, it can be installed in parallel with a rectifier. Therefore, it is possible to provide an economical power factor and/or waveform improvement device.
第1図はこの発明の直流変電装置の一実施例を示す回路
図、第2図はα値とPc/F1との関係を示すグラフで
ある。
1・・・特高母線、2・・・整流器変圧器、3・・・整
流器、4・・・コンデンサ設備、5・・・コンデンサ、
6・・・リアクトル。
特許出願人 日本国有鉄道
三菱電機株式会社
株式会社指月電機製作所
第1図
第2図
→伏槽(幻FIG. 1 is a circuit diagram showing an embodiment of a DC transformer according to the present invention, and FIG. 2 is a graph showing the relationship between α value and Pc/F1. 1... Special high bus bar, 2... Rectifier transformer, 3... Rectifier, 4... Capacitor equipment, 5... Capacitor,
6...Reactor. Patent applicant Japanese National Railway Mitsubishi Electric Co., Ltd. Shizuki Electric Manufacturing Co., Ltd. Figure 1 Figure 2
Claims (1)
る直流用変電装置において、上記整流回路とは並列に、
コンデンサと、このコンデンサに直列に接続されたリア
クトルとをそれぞれ挿入したことを特徴とする直流用変
電装置。1. In a DC substation consisting of an extra-high bus connected to a load via a main rectifier circuit, in parallel with the rectifier circuit,
A direct current transformer characterized by inserting a capacitor and a reactor connected in series to the capacitor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59133994A JPS6111831A (en) | 1984-06-27 | 1984-06-27 | Dc transformation device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59133994A JPS6111831A (en) | 1984-06-27 | 1984-06-27 | Dc transformation device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6111831A true JPS6111831A (en) | 1986-01-20 |
JPH0341842B2 JPH0341842B2 (en) | 1991-06-25 |
Family
ID=15117899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59133994A Granted JPS6111831A (en) | 1984-06-27 | 1984-06-27 | Dc transformation device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6111831A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5526010A (en) * | 1978-08-11 | 1980-02-25 | Hitachi Ltd | Capacitor device for improving higher-harmonic characteristic and power-factor of thyristor converter |
JPS5622538A (en) * | 1979-08-01 | 1981-03-03 | Shinwa Giken Kk | Power factor automatic control device |
JPS5625337A (en) * | 1979-08-07 | 1981-03-11 | Tokyo Shibaura Electric Co | Reactive power control device |
JPS5647564A (en) * | 1979-09-26 | 1981-04-30 | Ulvac Corp | Operation of magnetron-type sputtering device |
JPS5854414A (en) * | 1981-09-26 | 1983-03-31 | Mitsubishi Electric Corp | Countermeasure system for voltage variation |
-
1984
- 1984-06-27 JP JP59133994A patent/JPS6111831A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5526010A (en) * | 1978-08-11 | 1980-02-25 | Hitachi Ltd | Capacitor device for improving higher-harmonic characteristic and power-factor of thyristor converter |
JPS5622538A (en) * | 1979-08-01 | 1981-03-03 | Shinwa Giken Kk | Power factor automatic control device |
JPS5625337A (en) * | 1979-08-07 | 1981-03-11 | Tokyo Shibaura Electric Co | Reactive power control device |
JPS5647564A (en) * | 1979-09-26 | 1981-04-30 | Ulvac Corp | Operation of magnetron-type sputtering device |
JPS5854414A (en) * | 1981-09-26 | 1983-03-31 | Mitsubishi Electric Corp | Countermeasure system for voltage variation |
Also Published As
Publication number | Publication date |
---|---|
JPH0341842B2 (en) | 1991-06-25 |
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