JPH11111540A - Tap change control device for tap change transformer under load - Google Patents
Tap change control device for tap change transformer under loadInfo
- Publication number
- JPH11111540A JPH11111540A JP27227897A JP27227897A JPH11111540A JP H11111540 A JPH11111540 A JP H11111540A JP 27227897 A JP27227897 A JP 27227897A JP 27227897 A JP27227897 A JP 27227897A JP H11111540 A JPH11111540 A JP H11111540A
- Authority
- JP
- Japan
- Prior art keywords
- tap switching
- voltage
- load tap
- control device
- switching transformer
- 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.)
- Pending
Links
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
(57)【要約】
【課 題】 電力系統には電圧階級毎に複数の負荷時タ
ップ切替変圧器が設けられており、それぞれの負荷時タ
ップ切替変圧器に設けられるタップ切替制御装置により
それぞれが独立して電圧変動調整を行っているので、低
位系の電圧変動でも上位系のタップ切替制御装置が動作
していた。
【解決手段】 上位系のタップ切替制御装置の不要な動
作を防止するために、上位側負荷時タップ切替変圧器の
２次側電圧値と各送電線のインピーダンスおよび電流値
からそれぞれ下位側変電所（負荷時タップ切替変圧器）
の電圧を演算し、この演算電圧が下位側負荷時タップ切
替変圧器の電圧調整範囲を逸脱していると判断したとき
当該上位側負荷時タップ切替変圧器の２次側電圧の調整
を行なうものである。
(57) [Summary] [Problem] The power system is provided with a plurality of on-load tap switching transformers for each voltage class, and each of them is controlled by a tap switching control device provided for each on-load tap switching transformer. Since the voltage fluctuation is independently adjusted, the higher-order tap switching control device operates even when the voltage of the lower system changes. SOLUTION: In order to prevent unnecessary operation of a tap switching control device of an upper system, a lower substation is respectively determined from a secondary voltage value of an upper load tap switching transformer and an impedance and a current value of each transmission line. (Tap switching transformer under load)
And, when it is determined that the calculated voltage is out of the voltage adjustment range of the lower load tap switching transformer, the secondary voltage of the upper load tap switching transformer is adjusted. It is.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は負荷時タップ切替変
圧器（以下ＬＲＴと記述する。）のタップ切替制御装置
に用いる自動電圧調整器（以下ＡＶＲと記述する。）に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic voltage regulator (hereinafter, referred to as AVR) used in a tap switching control device of an on-load tap switching transformer (hereinafter, referred to as LRT).
【０００２】[0002]
【従来の技術】従来のＡＶＲはその整定電圧値とＬＲＴ
の２次側電圧を比較しＬＲＴに対してタップの昇圧もし
くは降圧指令を出す。これにより、ＬＲＴ２次側が所定
の電圧値に維持され、安定な電力供給が行われる。2. Description of the Related Art A conventional AVR has a settling voltage value and an LRT.
And outputs a tap boost or drop command to the LRT. Thereby, the LRT secondary side is maintained at a predetermined voltage value, and stable power supply is performed.
【０００３】[0003]
【発明が解決しようとする課題】電力系統には電圧階級
毎にＬＲＴが設けられているが従来のＡＶＲの機能で
は、低位系で電圧変動があった場合に上位系のＡＶＲも
動作しＬＲＴに対して昇圧もしくは降圧指令を出す事に
なっていた。The power system is provided with an LRT for each voltage class, but in the conventional AVR function, when there is a voltage fluctuation in the lower system, the AVR of the higher system also operates and the LRT is operated. On the other hand, a boost or buck command was issued.
【０００４】この事は低位系のＬＲＴのタップ切り替え
のみで電圧変動を調整可能な場合でも、上位系のＬＲＴ
のタップを不要に切り替える事となり、上位系ＬＲＴの
点検インターバルを短くするなどの問題があった。[0004] This means that even if the voltage fluctuation can be adjusted only by switching the taps of the low-order LRT, the LRT of the high-order LRT can be adjusted.
The taps are switched unnecessarily, which causes a problem such as shortening the inspection interval of the upper system LRT.
【０００５】よって、本発明は低位系で電圧変動があっ
た場合に、上位系のＡＶＲを動作させＬＲＴに対して昇
圧もしくは降圧指令を出す必要が有るかどうかを判定さ
せる事により、上位系のＬＲＴの不要なタップ切り替え
を抑制しＬＲＴの点検インターバルが短くなるなどを防
止するものである。Therefore, according to the present invention, when a voltage fluctuation occurs in the low-order system, the AVR of the high-order system is operated to determine whether or not it is necessary to issue a boost or step-down command to the LRT. It is intended to suppress unnecessary tap switching of the LRT and prevent the inspection interval of the LRT from being shortened.
【０００６】[0006]
【課題を解決するための手段】上位側ＬＲＴ２次側に接
続される各送電線（１〜ｎ回線）のインピーダンス（Ｚ
1 〜Ｚn ）を記憶する手段及び各送電線電流（Ｉ1 〜Ｉ
n ）を入力する手段を備える。そして、各低位系電気所
の電圧を［自端電圧−Ｚn ・Ｉn ］の演算式を用いて想
定し、低位系電気所のＬＲＴで電圧調整が出来ない場合
のみ上位系電気所のＡＶＲが動作しＬＲＴに対して昇圧
もしくは降圧指令を出すものとする。Means for Solving the Problems The impedance (Z) of each transmission line (1 to n lines) connected to the secondary side of the upper LRT.
1 to Z n ) and respective transmission line currents (I 1 to I 1)
n ) is provided. Then, AVR of the low system voltage of the electric plant is assumed by using an arithmetic expression of the local end voltage -Z n · I n], the upper device only when it is not possible voltage adjustment LRT of low system electric station substation Operates and issues a boost or step-down command to the LRT.
【０００７】上位側ＬＲＴ２次側に接続される送電線を
ｎ回線、各送電線のインピーダンスをＺn 、各送電線の
電流値をＩn 、上位側ＡＶＲ設置点の電圧をＶ、相手電
気所の下位側ＬＲＴで電圧調整可能範囲をＶnMax〜ＶnM
inした場合、ＡＶＲにて下記判定を行い、ＬＲＴに対し
て昇圧もしくは降圧指令を出すものとする。ＶnMax≧Ｖ
−Ｉn Ｚn の場合はＡＶＲより降圧指令を出す。ＶnMin
≦Ｖ−Ｉn Ｚn の場合はＡＶＲより昇圧指令を出す。[0007] upper LRT2 primary connected to the transmission line to n lines, each transmission line impedance Z n, each transmission line the current value of I n, the voltage of the upper AVR installation point V, counterpart substation The voltage adjustable range in the lower LRT of VnMax to VnM
If in, the following determination is made by the AVR, and a step-up or step-down command is issued to the LRT. VnMax ≧ V
For -I n Z n issues a stepping down instruction from the AVR. VnMin
For ≦ V-I n Z n issues a boost command from AVR.
【０００８】[0008]
【発明の実施の形態】図１にて構成例を説明する。図１
において上位系の電気所であるＡｓｓに設置された上位
側ＡＶＲ（１）が、各低位系変電所（第１ＳＳ〜第ｎＳ
Ｓ）への各送電線電流Ｉ1 〜Ｉn 及び上位側ＬＲＴ
（２）の２次電圧Ｖを導入し、各送電線のインピーダン
スＺ1 〜Ｚn を整定値として設定する事により以下の演
算を各変電所毎に実施する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A configuration example will be described with reference to FIG. FIG.
, The upper AVR (1) installed in the upper-level substation Ass is connected to each lower-level substation (first SS to nS-th substation).
Each transmission line current I 1 ~I n and the upper side LRT to S)
(2) introducing the secondary voltage V of, performed for each substation following operations by setting the impedance Z 1 to Z n for the respective power transmission lines as a setting value.
【０００９】第１変電所の電圧Ｖ１＝Ｖ−Ｉ1 ・Ｚ1 第ｎ変電所の電圧Ｖｎ＝Ｖ−Ｉn ・Ｚn そして、Ｖ１〜Ｖｎについて、それぞれ各変電所の低位
系ＬＲＴ（４）の電圧調整範囲を越えた場合のみＡｓｓ
のＡＶＲ（１）よりＬＲＴ（２）に対して昇圧もくしは
降圧指令を出すものとする。[0009] Voltage Vn = V-I n · Z n of the first substation voltage V1 = V-I 1 · Z 1 n-th substation and, for V1 to Vn, respectively lower system LRT for each substation (4 ) Only when the voltage adjustment range is exceeded
AVR (1) issues a step-up or step-down command to LRT (2).
【００１０】なお、Ｖ１〜Ｖｎの最小値及び最大値に基
づいて、電圧調整範囲を逸脱したか否か判断する構成と
しても良い。上位系の変電所であるＡｓｓに設置された
ＡＶＲで低位系変電所の電圧を線路インピーダンスとそ
の線路に流れる電流値により求め上位系のＬＲＴのタッ
プ切り替えの要否を判断し必要な場合のみＬＲＴに対し
て昇圧もしくは降圧指令を出す為に不要なタップ切り替
えが無くなる為、上位系ＬＲＴの点検インターバルが短
くなることを防ぐことができる。[0010] A configuration may be adopted in which whether or not the voltage is out of the voltage adjustment range is determined based on the minimum value and the maximum value of V1 to Vn. The voltage of the low-level substation is determined from the line impedance and the current value flowing through the line using the AVR installed in the upper-level substation Ass, and it is determined whether tap switching of the upper-level LRT is necessary. Since unnecessary tap switching for issuing a step-up or step-down command is eliminated, it is possible to prevent the inspection interval of the upper system LRT from becoming short.
【００１１】[0011]
【発明の効果】以上のように本発明は、低位系の電圧を
上位系電気所のＡＶＲで検出し低位系のＬＲＴで調整で
きる範囲の電圧変動であれば、上位系のＬＲＴを動作さ
せないように出来、低位系の電圧変動での不要な上位系
のＬＲＴの昇圧もしくは降圧動作を防ぐことができる。As described above, according to the present invention, if the voltage fluctuation of the lower system is detected by the AVR of the upper system electric station and the voltage can be adjusted by the lower system LRT, the upper system LRT is not operated. Thus, it is possible to prevent an unnecessary step-up or step-down operation of the upper system LRT due to the voltage fluctuation of the lower system.
【図１】本発明のタップ切替制御装置を示す図FIG. 1 is a diagram showing a tap switching control device of the present invention.
１…ＡＶＲ（自動電圧調整器）、２…上位系のＬＲＴ
（負荷時タップ切替変圧器）、３…ＰＴ、４…低位系の
ＬＲＴ1. AVR (automatic voltage regulator) 2. LRT of higher system
(Tap switching transformer under load), 3 ... PT, 4 ... Lower system LRT
Claims (1)
それぞれ送電線を介して接続される上位側負荷時タップ
切替変圧器の２次側電圧を所定値に維持するようにタッ
プの上げ、下げ制御を行なう負荷時タップ切替変圧器の
タップ切替制御装置において、前記各送電線のインピー
ダンスを記憶する記憶手段と、前記各送電線に流れる電
流値および当該上位側負荷時タップ切替変圧器の２次側
電圧値を入力する電気量入力手段と、上位側負荷時タッ
プ切替変圧器の前記２次側電圧値と各送電線の前記イン
ピーダンスおよび前記電流値からそれぞれ下位側負荷時
タップ切替変圧器の電圧を演算する電圧演算手段と、こ
の電圧演算手段にて演算した電圧が該当下位側負荷時タ
ップ切替変圧器の電圧調整範囲を逸脱しているか否かを
判断する判断手段と、この判断手段が電圧調整範囲を逸
脱していると判断したとき当該上位側負荷時タップ切替
変圧器の２次側電圧の調整を行なう調整手段とを具備す
ることを特徴とする負荷時タップ切替変圧器のタップ切
替制御装置。1. A tap is raised so as to maintain a secondary voltage of a plurality of lower load tap switching transformers connected to a plurality of lower load tap switching transformers via transmission lines, respectively, at a predetermined value. In a tap switching control device of a load tap switching transformer that performs drop control, a storage means for storing impedance of each transmission line, a current value flowing through each transmission line and the upper-side load tap switching transformer. An electric quantity input means for inputting a secondary voltage value, and a lower load tap switching transformer based on the secondary voltage value of the upper load tap switching transformer and the impedance and the current value of each transmission line. Voltage calculating means for calculating the voltage, and determining means for determining whether or not the voltage calculated by the voltage calculating means is out of the voltage adjustment range of the corresponding lower load tap switching transformer. And an adjusting means for adjusting the secondary voltage of the upper-side load tap switching transformer when the judging means judges that the tap deviation is out of the voltage adjustment range. Transformer tap switching control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27227897A JPH11111540A (en) | 1997-10-06 | 1997-10-06 | Tap change control device for tap change transformer under load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27227897A JPH11111540A (en) | 1997-10-06 | 1997-10-06 | Tap change control device for tap change transformer under load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11111540A true JPH11111540A (en) | 1999-04-23 |
Family
ID=17511633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27227897A Pending JPH11111540A (en) | 1997-10-06 | 1997-10-06 | Tap change control device for tap change transformer under load |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11111540A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100445225B1 (en) * | 2002-07-22 | 2004-08-21 | 한국전력공사 | Oltc blocking system of mtr |
-
1997
- 1997-10-06 JP JP27227897A patent/JPH11111540A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100445225B1 (en) * | 2002-07-22 | 2004-08-21 | 한국전력공사 | Oltc blocking system of mtr |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Baran et al. | Volt/var control at distribution substations | |
| EP2506384B1 (en) | System and method for operating a tap changer | |
| JP2009065788A (en) | Optimal voltage controller for distribution system | |
| JP6517857B2 (en) | Voltage control apparatus for voltage regulator and voltage control method therefor | |
| JP6877295B2 (en) | Judgment method of voltage regulator and voltage regulator | |
| JP2005117734A (en) | Method and device for voltage management of power distribution system | |
| KR20240132231A (en) | Control apparatus of photovoltaic inverter | |
| JP2014023303A (en) | Reverse power flow factor determination method and device for power distribution automatic voltage regulator | |
| JPH0578250B2 (en) | ||
| CN109921407B (en) | A secondary regulator, system and method for DC microgrid current distribution | |
| JP4224309B2 (en) | Voltage adjustment method for distribution system and automatic voltage adjustment device used for the method | |
| JPH11111540A (en) | Tap change control device for tap change transformer under load | |
| JP2021197854A (en) | Set value determination system, voltage regulator, and set value determination method | |
| KR20190043297A (en) | Apparatus for controlling voltage regulation based on voltage measurement, Method thereof, and Computer readable storage medium having the same | |
| JP2003259554A (en) | Voltage reactive power monitoring control device and voltage reactive power monitoring control program | |
| Liu et al. | Power sharing analysis of power-based droop control for DC microgrids considering cable impedances | |
| JP2003259553A (en) | Voltage regulating control device for distribution system | |
| Kulaev et al. | Regulation of voltage and optimization of power losses in active-adaptive networks | |
| Aldrich et al. | Distributed generation voltage control issues and solutions | |
| JP3028213B2 (en) | Voltage regulator | |
| JP7725210B2 (en) | Voltage regulator and voltage regulation method | |
| JPH05344653A (en) | Automatic voltage controller for power plant | |
| JP2631547B2 (en) | Substation bus voltage control method | |
| KR200416148Y1 (en) | Voltage regulator using reactor transformer | |
| JP2023177404A (en) | Distribution voltage adjustment device, and method thereof |