【発明の詳細な説明】〔産業上の利用分野〕 この発明は、負荷時タツプ切換装置のタツプ切
換制御装置、特に負荷時タツプ切換装置を有する
３巻線変圧器に、２つの高圧母線が電気的に結合
された電源供給構成における、負荷時タツプ切換
装置付３巻線変圧器のタツプ切換制御装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a tap switching control device for an on-load tap switching device, particularly a three-winding transformer having an on-load tap switching device, in which two high-voltage busbars are electrically connected. The present invention relates to a tap-switching control device for a three-winding transformer with on-load tap-switching device in a coupled power supply configuration.
第３図は、例えば大岡 登、前川 定雄：東京
電機大学出版局発行、標準電気機器構座第６巻、
「変圧器」第５章P.98〜99（昭和43年１月20日）に
示された、従来の負荷時タツプ切換装置付２巻線
変圧器のタツプ切換制御装置を概略的に示すブロ
ツク図であり、図において１は電源と負荷との間
に設けられた負荷時タツプ切換装置付２巻線変圧
器、２は負荷時タツプ切換装置の駆動電動機、３
は負荷側電圧検出変成器、４はタツプ位置制御の
自動制御と手動制御を選択する選択切換スイツ
チ、５は電圧調整リレー、６は負荷側電圧の制御
目標値を設定する基準値設定信号、７および８は
それぞれ電圧調整リレー５のタツプ位置上げ信号
９を送るための接点と、タツプ位置下げ信号１０
を送るための接点である。 Figure 3 shows, for example, Noboru Ooka, Sadao Maekawa: Standard Electrical Equipment Structure Vol. 6, published by Tokyo Denki University Press.
A block schematically showing a tap switching control device for a conventional two-winding transformer with an on-load tap switching device, shown in "Transformers" Chapter 5, pages 98-99 (January 20, 1961). In the figure, 1 is a two-winding transformer with an on-load tap switching device installed between a power source and a load, 2 is a drive motor for the on-load tap switching device, and 3
is a load side voltage detection transformer, 4 is a selection switch for selecting automatic control or manual control of tap position control, 5 is a voltage adjustment relay, 6 is a reference value setting signal for setting the control target value of the load side voltage, 7 and 8 are contacts for sending a tap position raising signal 9 and a tap position lowering signal 10 of the voltage adjustment relay 5, respectively.
It is a contact point for sending.
次に動作について説明する。選択切換スイツチ
４を図示のように自動制御側に選択すると、電圧
調整リレー５は、変成器３で検出された負荷側電
圧を示す電圧信号と、基準値設定信号６とを比較
する。そして、負荷側の電圧が基準値設定信号６
より低い場合には、タツプ位置上げ信号９、高い
場合にはタツプ位置下げ信号１０を負荷時タツプ
切換装置の駆動電動機２に送る。そして、これら
の信号により、負荷側の電圧が基準値設定信号６
に等しくなるように、負荷時タツプ切換装置の駆
動電動機２が制御され、タツプ位置が切換えられ
る。なお、選択切換スイツチ４を手動制御側に選
択すれば、駆動電動機２の制御は手動で行われ
る。 Next, the operation will be explained. When the selection changeover switch 4 is selected to the automatic control side as shown, the voltage adjustment relay 5 compares the voltage signal indicating the load side voltage detected by the transformer 3 with the reference value setting signal 6. Then, the voltage on the load side is the reference value setting signal 6
If it is lower, a tap position raising signal 9 is sent, and if it is higher, a tap position lowering signal 10 is sent to the drive motor 2 of the on-load tap switching device. These signals cause the voltage on the load side to reach the reference value setting signal 6.
The drive motor 2 of the on-load tap switching device is controlled to switch the tap position so that the tap position is equal to . Note that if the selection changeover switch 4 is selected to the manual control side, the control of the drive motor 2 is performed manually.
従来の負荷時タツプ切換装置のタツプ切換制御
装置は、以上のように構成されているが、変圧器
が３巻線変圧器であり、これの二次巻線および三
次巻線のそれぞれに負荷が電気的に結合された配
電系統の場合には、いづれか一方の負荷電圧しか
制御できず、選択されない側の負荷は選択された
側の負荷の電圧によつて決定されるタツプ位置に
基づく電圧によつて運転されるため、適切でない
電圧によつて運転されるという問題点があつた。 The tap switching control device of the conventional tap switching device at the time of load is configured as described above, but the transformer is a three-winding transformer, and the load is applied to each of the secondary and tertiary windings of the transformer. In the case of electrically coupled distribution systems, only one of the load voltages can be controlled, and the unselected load is controlled by a voltage based on the tap position determined by the voltage of the selected load. However, there was a problem in that it was operated at an inappropriate voltage.
この発明は、かかる問題点を解決するためにな
されたもので、負荷時タツプ切換装置を有する３
巻線変圧器に２つの高圧母線が接続されて並列運
転が行われる電源供給構成において、それぞれの
高圧母線に接続される負荷に、適切な高圧母線電
圧を設定するようにした負荷時タツプ切換装置付
３巻線変圧器のタツプ切換制御装置を提供するこ
とを目的としている。 This invention was made to solve this problem, and is a three-way switch having a load tap switching device.
In a power supply configuration in which two high-voltage buses are connected to a winding transformer and operated in parallel, an on-load tap switching device is configured to set an appropriate high-voltage bus voltage for the loads connected to each high-voltage bus. The object of the present invention is to provide a tap switching control device for a three-winding transformer.
上記の目的に鑑み、この発明は、一次巻線電圧
に対する二次巻線および三次巻線電圧の比率を変
えるための負荷時タツプ切換装置を有する３巻線
変圧器と、この３巻線変圧器の二次巻線および三
次巻線にそれぞれ電流しや断手段を介して接続さ
れた２つの分離された高圧母線とからなる電源供
給構成中に設置された負荷時タツプ切換装置のタ
ツプ切換制御装置であつて、各高圧母線の電圧を
検出する手段と、この電圧検出手段によつて検出
された母線電圧の平均値を求める演算手段と、こ
の演算手段および検出手段へ接続され、並列運転
の場合は平均値を、単独運転の場合には運転中の
高圧母線の検出電圧を切換えて出力するスイツチ
手段と、このスイツチ手段からの平均値または前
記検出電圧と制御目標値である基準値との大小関
係に従つて負荷時タツプ切換装置のタツプの切換
えを制御する手段と、を備えた負荷時タツプ切換
装置付３巻線変圧器のタツプ切換制御装置にあ
る。 In view of the above object, the present invention provides a three-winding transformer having an on-load tap switching device for changing the ratio of the secondary winding and tertiary winding voltages to the primary winding voltage, and the three-winding transformer. Tap-switching control device for an on-load tap-switching device installed in a power supply configuration consisting of two separate high-voltage busbars each connected to the secondary and tertiary windings of means for detecting the voltage of each high-voltage bus, a calculation means for calculating the average value of the bus voltage detected by the voltage detection means, and connected to the calculation means and the detection means, in the case of parallel operation. is the average value, and in the case of individual operation, the switching means that switches and outputs the detected voltage of the high voltage bus in operation, and the average value from this switching means or the magnitude of the detected voltage and the reference value which is the control target value. and means for controlling tap switching of the on-load tap changer according to the relationship.
この発明においては、各高圧母線のそれぞれの
母線電圧と共に、これらの母線電圧の平均値が検
出され、単独運転の場合にはその電圧母線の母線
電圧と制御目標値が、また並列運転の場合には、
運転されている各高圧母線の母線電圧の平均値と
制御目標値がそれぞれ比較され、これに従つてタ
ツプ位置が制御されるので、負荷に適切な運転電
圧が供給される。 In this invention, the bus voltage of each high voltage bus and the average value of these bus voltages are detected, and the bus voltage and control target value of the voltage bus are detected in the case of individual operation, and the bus voltage and control target value of the voltage bus in the case of parallel operation. teeth,
The average value of the bus voltage of each high-voltage bus being operated is compared with the control target value, and the tap position is controlled accordingly, so that an appropriate operating voltage is supplied to the load.
第１図は、この発明のタツプ切換制御装置の一
実施例を示すブロツク図である。図において２お
よび５〜１０は第３図に示した従来の装置のもの
と同じである。１１は電源、負荷間に設けられた
負荷時タツプ切換装置付３巻線変圧器（以下３巻
線変圧器とする）、１２Ａと１２Ｂは３巻線変圧
器１１に接続されたそれぞれＡ高圧母線およびＢ
高圧母線、１３ＡはＡ高圧母線１２Ａに接続され
たＡ高圧母線負荷、１３ＢはＢ高圧母線１２Ｂに
接続されたＢ高圧母線負荷、１４Ａと１４ＢはＡ
高圧母線１２Ａ、Ｂ高圧母線１２Ｂへの電流をし
や断するためのそれぞれＡ高圧母線入口しや断器
およびＢ高圧母線入口しや断器、１５Ａと１５Ｂ
はＡ高圧母線１２Ａ、Ｂ高圧母線１２Ｂの母線電
圧を検出し、これを示すＡ母線電圧信号VA、Ｂ
母線電圧信号VBを発生するためのそれぞれＡ高
圧母線変成器およびＢ高圧母線変成器、１６はＡ
母線電圧信号VAおよびＢ母線電圧信号VBの平
均を求めることによりＡ高圧母線１２Ａ、Ｂ高圧
母線１２Ｂの母線電圧の平均値を算出し、これを
示す電圧平均値信号Ｖを発生するための除算演算
器、そして１７は上述した各信号Ｖ，VA，VB
を運転状態に従つて選択して電圧調整リレー５に
送る選択切換スイツチである。 FIG. 1 is a block diagram showing an embodiment of the tap switching control device of the present invention. In the figure, numerals 2 and 5 to 10 are the same as those of the conventional device shown in FIG. 11 is a power supply, a 3-winding transformer (hereinafter referred to as a 3-winding transformer) with an on-load tap switching device installed between the loads, and 12A and 12B are A high-voltage buses connected to the 3-winding transformer 11, respectively. and B
High voltage bus, 13A is A high voltage bus load connected to A high voltage bus 12A, 13B is B high voltage bus load connected to B high voltage bus 12B, 14A and 14B are A
A high voltage bus inlet breaker and B high voltage bus inlet breaker for cutting off the current to the high voltage bus 12A and B high voltage bus 12B, respectively, 15A and 15B.
detects the bus voltages of the A high voltage bus 12A and the B high voltage bus 12B, and outputs A bus voltage signals VA and B that indicate this.
A high voltage bus transformer and B high voltage bus transformer, 16 respectively, for generating the bus voltage signal VB;
A division operation for calculating the average value of the bus voltages of the A high voltage bus 12A and the B high voltage bus 12B by calculating the average of the bus voltage signal VA and the B bus voltage signal VB, and generating a voltage average value signal V indicating this. and 17 each of the above-mentioned signals V, VA, VB.
This is a selection changeover switch that selects and sends the selected voltage to the voltage adjustment relay 5 according to the operating condition.
次に動作について説明する。まず、Ａ高圧母線
１２ＡとＢ高圧母線１２Ｂが並列運転中である時
には、Ａ高圧母線単独運転−Ｂ高圧母線単独運転
−Ａ、Ｂ高圧母線並列運転の３切換位置を有する
選択切換スイツチ１７を図示のようにＡ、Ｂ高圧
母線並列運転の位置に選択する。これにより、電
圧調整リレー５へ入力信号として、Ａ母線電圧信
号VA、Ｂ母線電圧信号VBの平均値を示す除算
演算器１６の出力信号である電圧平均値信号Ｖが
与えられる。電圧調整リレー５では、電圧平均値
信号Ｖと基準値設定信号６が比較されて、電圧平
均値信号Ｖが基準値設定信号６より小さい場合に
はタツプ位置上げ信号９が、大きい場合にはタツ
プ位置下げ信号１０が、負荷時タツプ切換装置の
駆動電動機２に送られ、タツプ位置が切換えされ
る。また、Ａ高圧母線１２Ａ或いはＢ高圧母線１
２Ｂの単独運転の場合には、選択切換スイツチ１
７をＡ高圧母線単独運転、或いはＢ高圧母線単独
運転の位置に選択することにより、Ａ母線電圧信
号VA、或いはＢ母線電圧信号VBが電圧調整リ
レー５に入力され、同様に基準値設定信号６との
比較により、タツプ位置上げ・下げ信号９，１０
が駆動電動機２に送られ、タツプ位置が切換えら
れる。 Next, the operation will be explained. First, when the A high-voltage bus 12A and the B high-voltage bus 12B are in parallel operation, a selection changeover switch 17 is shown which has three switching positions: A high-voltage bus individual operation, B high-voltage bus individual operation, and A and B high-voltage bus parallel operation. Select the position for parallel operation of A and B high voltage buses as shown below. As a result, a voltage average value signal V, which is an output signal of the division calculator 16 indicating the average value of the A bus voltage signal VA and the B bus voltage signal VB, is provided as an input signal to the voltage adjustment relay 5. The voltage adjustment relay 5 compares the voltage average value signal V and the reference value setting signal 6, and when the voltage average value signal V is smaller than the reference value setting signal 6, the tap position raising signal 9 is raised, and when it is larger, the tap position raising signal 9 is raised. A position lowering signal 10 is sent to the drive motor 2 of the on-load tap switching device to switch the tap position. In addition, A high voltage bus 12A or B high voltage bus 1
When operating 2B alone, select selector switch 1.
7 to the position of A high voltage bus independent operation or B high voltage bus independent operation, the A bus voltage signal VA or the B bus voltage signal VB is input to the voltage adjustment relay 5, and the reference value setting signal 6 is also inputted to the voltage adjustment relay 5. By comparison, tap position up/down signals 9 and 10
is sent to the drive motor 2, and the tap position is switched.
なお、上記実施例では、各母線電圧信号および
電圧平均値信号の選択切換えを選択切換スイツチ
で行つていたが、選択切換スイツチの代わりとし
て、各高圧母線に設けられた高圧母線入口しや断
器の補助接点で構成される論理回路を使用して、
単独運転、或いは並列運転状態に従つて所望の信
号を自動的に選択するようにしてもよい。そこ
で、その一実施例を第２図に示す。第２図におい
て、第１図と異なるところは、選択切換スイツチ
１７の代わりに論理回路１８を設けたことで、そ
の他は全く同じである。論理回路１８において、
AaはＡ高圧母線入口しや断器１４Ａのａ接点動
作の補助接点、Abはそのｂ接点動作の補助接点、
BaはＢ高圧母線入口しや断器１４Ｂのａ接点動
作の補助接点、Bbはそのｂ接点動作の補助接点
である。今、例えばＡ高圧母線１２ＡおよびＢ高
圧母線１２Ｂが並列運転されている場合を考える
と、それぞれの、Ａ、Ｂ高圧母線入口しや断器１
４Ａ，１４Ｂは共に“ON”されているため、各
補助接点は第２図に示すようになり、電圧平均値
信号Ｖが電圧調整リレー５に送られる。また、Ａ
高圧母線１２Ａの単独運転の場合には、Ｂ高圧母
線入口しや断器１４Ｂが“OFF”されるため、
電圧調整リレー５にはＡ母線電圧信号VAのみが
送られ、Ｂ高圧母線１２Ｂの単独運転の場合に
は、Ａ高圧母線入口しや断器１４Ａが“OFF”
するため、Ｂ母線電圧信号VBのみが送られる。
さらに、両高圧母線１２Ａ，１２Ｂ共、運転され
ていなければ、いずれの信号を電圧調整リレー５
には送られないことになる。 In the above embodiment, each bus voltage signal and voltage average value signal are selected by a selection changeover switch, but instead of the selection changeover switch, a high voltage bus inlet or disconnection provided on each high voltage bus may be used. Using a logic circuit consisting of the auxiliary contacts of the device,
A desired signal may be automatically selected depending on the individual operation or parallel operation status. An example of this is shown in FIG. 2. The difference between FIG. 2 and FIG. 1 is that a logic circuit 18 is provided in place of the selection switch 17, and the rest is exactly the same. In the logic circuit 18,
Aa is the auxiliary contact of the A high voltage bus inlet and disconnector 14A, which operates as the a contact, Ab is the auxiliary contact that operates as the b contact,
Ba is an auxiliary contact for the a contact operation of the B high voltage bus inlet and disconnector 14B, and Bb is an auxiliary contact for the b contact operation. Now, for example, if we consider a case where the A high voltage bus 12A and the B high voltage bus 12B are operated in parallel, each of the A and B high voltage bus inlets and disconnectors 1
Since both 4A and 14B are "ON", each auxiliary contact becomes as shown in FIG. 2, and the voltage average value signal V is sent to the voltage adjustment relay 5. Also, A
When the high voltage bus 12A is operating independently, the B high voltage bus inlet and disconnector 14B are turned OFF.
Only the A bus voltage signal VA is sent to the voltage adjustment relay 5, and when the B high voltage bus 12B is operating independently, the A high voltage bus inlet switch 14A is turned OFF.
Therefore, only the B bus voltage signal VB is sent.
Furthermore, if both high-voltage buses 12A and 12B are not in operation, either signal is sent to the voltage adjustment relay 5.
It will not be sent to
また除算演算器としては、補助変圧器或いは電
子式演算器を用いればよい。 Further, as the division arithmetic unit, an auxiliary transformer or an electronic arithmetic unit may be used.
以上のように、この発明によれば、２つの分離
された高圧母線が接続され、これらの高圧母線に
電力供給を行う負荷時タツプ切換装置付３巻線変
圧器に、高圧母線が単独運転される時は、単独運
転される高圧母線の母線電圧を検出し、この母線
電圧と制御目標値を比較した値に従つて負荷時タ
ツプ切換装置の駆動電動機にタツプ位置上げ・下
げ信号を与えることによつてタツプ位置を切換
え、また、２つの高圧母線が並列運転される時
は、２つの高圧母線の母線電圧の平均値を検出
し、この電圧平均値と制御目標を比較した値に従
つて負荷時タツプ切換装置の駆動電動機にタツプ
位置上げ・下げ信号を与えることによつてタツプ
位置を切換えるタツプ切換制御装置により、各高
圧母線に接続される負荷に適切な運転電圧が与え
られるという効果が得られる。 As described above, according to the present invention, two separated high-voltage buses are connected, and the high-voltage bus is operated independently by a three-winding transformer with an on-load tap switching device that supplies power to these high-voltage buses. When the high-voltage bus is operated independently, the bus voltage of the high-voltage bus is detected, and a tap position raising/lowering signal is given to the drive motor of the on-load tap switching device according to the value obtained by comparing this bus voltage with the control target value. Therefore, when the tap position is changed and two high voltage buses are operated in parallel, the average value of the bus voltage of the two high voltage buses is detected, and the load is adjusted according to the value obtained by comparing this voltage average value with the control target. The tap switching control device which switches the tap position by giving a tap position up/down signal to the drive motor of the time tap switching device has the effect of giving an appropriate operating voltage to the load connected to each high voltage bus. It will be done.
第１図は、この発明の負荷時タツプ切換装置付
３巻線変圧器のタツプ切換制御装置の一実施例を
示すブロツク図、第２図はこの発明の他の実施例
を示すブロツク図、第３図は従来のこの種のタツ
プ切換制御装置を概略的に示すブロツク図であ
る。 図において、２は負荷時タツプ切換装置の駆動
電動機、５は電圧調整リレー、６は基準値設定信
号、７と８は接点、９はタツプ位置上げ信号、１
０はタツプ位置下げ信号、１１は負荷時タツプ切
換装置付３巻線変圧器、１２ＡはＡ高圧母線、１
２ＢはＢ高圧母線、１３ＡはＡ高圧母線負荷、１
３ＢはＢ高圧母線負荷、１４ＡはＡ高圧母線入口
しや断器、１４ＢはＢ高圧母線入口しや断器、１
５ＡはＡ高圧母線変成器、１５ＢはＢ高圧母線変
成器、１６は除算演算器、１７は選択切換スイツ
チ、１８は論理回路、AaとAbとBaとBbは補助
接点、VAはＡ母線電圧信号、VBはＢ母線電圧
信号、Ｖは電圧平均値信号である。なお、各図
中、同一符号は同一又は相当部分を示す。 FIG. 1 is a block diagram showing one embodiment of a tap switching control device for a three-winding transformer with an on-load tap switching device according to the present invention, and FIG. 2 is a block diagram showing another embodiment of the present invention. FIG. 3 is a block diagram schematically showing a conventional tap switching control device of this type. In the figure, 2 is the drive motor of the tap switching device on load, 5 is the voltage adjustment relay, 6 is the reference value setting signal, 7 and 8 are contacts, 9 is the tap position raising signal, 1
0 is a tap position lowering signal, 11 is a 3-winding transformer with a tap switching device on load, 12A is an A high voltage bus, 1
2B is B high voltage bus, 13A is A high voltage bus load, 1
3B is the B high-voltage bus load, 14A is the A high-voltage bus inlet breaker, 14B is the B high-voltage bus inlet breaker, 1
5A is the A high voltage bus transformer, 15B is the B high voltage bus transformer, 16 is the division calculator, 17 is the selection switch, 18 is the logic circuit, Aa, Ab, Ba and Bb are auxiliary contacts, VA is the A bus voltage signal , VB is the B bus voltage signal, and V is the voltage average value signal. In each figure, the same reference numerals indicate the same or equivalent parts.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25409084AJPS61133616A (en) | 1984-12-03 | 1984-12-03 | Tap switching control device for 3-winding transformer with on-load tap switching device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25409084AJPS61133616A (en) | 1984-12-03 | 1984-12-03 | Tap switching control device for 3-winding transformer with on-load tap switching device |
| Publication Number | Publication Date |
|---|---|
| JPS61133616A JPS61133616A (en) | 1986-06-20 |
| JPH0367329B2true JPH0367329B2 (en) | 1991-10-22 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25409084AGrantedJPS61133616A (en) | 1984-12-03 | 1984-12-03 | Tap switching control device for 3-winding transformer with on-load tap switching device |
| Country | Link |
|---|---|
| JP (1) | JPS61133616A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54145918A (en)* | 1978-05-09 | 1979-11-14 | Toshiba Corp | Automatic tap deviation control circuit for on-load tap changing transformer |
| Publication number | Publication date |
|---|---|
| JPS61133616A (en) | 1986-06-20 |
| Publication | Publication Date | Title |
|---|---|---|
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