JPS58148628A - Reactive power controller - Google Patents
Reactive power controllerInfo
- Publication number
- JPS58148628A JPS58148628A JP57032866A JP3286682A JPS58148628A JP S58148628 A JPS58148628 A JP S58148628A JP 57032866 A JP57032866 A JP 57032866A JP 3286682 A JP3286682 A JP 3286682A JP S58148628 A JPS58148628 A JP S58148628A
- Authority
- JP
- Japan
- Prior art keywords
- power transmission
- reactive
- reactive power
- section
- power
- 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
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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は送電系統における無効電力制御装置に関するも
ので、その目的とするところは、3相の内、1相の電流
信号と他の2相の電圧信号により、無効電流あるいは無
効電力を検出する装置に、送電方向判別機能及びコンデ
ンサ、リアクトルの定格電流もしくは定格容量の記憶機
能を有することにより、逆方向送電特に補償機能を持た
せて装置を良好に動作させようとするものである。Detailed Description of the Invention The present invention relates to a reactive power control device in a power transmission system, and its purpose is to control reactive current by controlling a current signal of one phase among three phases and voltage signals of the other two phases. Alternatively, by providing a device that detects reactive power with a power transmission direction determination function and a memory function of the rated current or rated capacity of a capacitor or reactor, the device can be made to operate favorably by providing a compensation function, especially for reverse power transmission. It is something.
従来、送電系統の無効電力を軽減させる装置の制御方式
として、時間制御、無効電力制御、電圧制御等が考案さ
れているが、その中でも無効電力(無効電流)方式は、
送電系統の送電方向によって問題が生じるおそれがあっ
た。つまり、制御装置は通常の送電方向の状態で正常動
作をするが、逆方向送電発生時には正常動作と反対の動
作をするようになっているからである。これは、逆方向
送電により、電流位相が180°反転することにより、
負荷側の系統が゛遅れ、の状態では制御装置は“進み、
の動作をすることになり、良好な制御が行なわれない欠
点があった。Conventionally, time control, reactive power control, voltage control, etc. have been devised as control methods for devices that reduce reactive power in power transmission systems, but among these, the reactive power (reactive current) method is
Problems could arise depending on the direction of power transmission in the power transmission system. That is, the control device operates normally in the normal power transmission direction state, but operates in the opposite direction when reverse direction power transmission occurs. This is because the current phase is reversed by 180° due to reverse power transmission.
When the load-side system is “lag”, the control device will “advance”.
This has the drawback that good control cannot be performed.
本発明は上記のような欠点を解消したもので、以下実施
例として示した図面に従いその構成を説明する。h相の
電流信号は、CTを通して抵抗Riの両端にeiの信号
として出力される。 S 111間の線間電圧は、P
Tを通して抵抗Rvの両端にevのイ=号として出力さ
れる。The present invention eliminates the above-mentioned drawbacks, and the structure thereof will be explained below with reference to the drawings shown as embodiments. The h-phase current signal is output as a signal ei to both ends of the resistor Ri through the CT. The line voltage between S111 is P
It is output as the i= sign of ev to both ends of the resistor Rv through T.
第1図の回路図において、(1)はアナログスイッチ部
、(2)は無効電力データ出力部、(3)は制御部、(
4)は開閉器操作部である。(5)は−移相および波形
成形部、(6)は波形成形部、(7)はインバーター(
位相反転用)、(8)はアナログスイッチ部、(9)は
アナログスイッチ部、顛はアナログスイッチ部、Qll
は送電方向判別信号出力部である。021はインバータ
ー、a3は逆方向送電兼誤接続表示部である。■はアナ
ログスイッチ部(投入信号用)、α5ンはアナログスイ
ッチ部、Q61は容量記憶部である。先ず本°発明制御
装置を取付ける段階において、逆方向送電表示兼誤接続
表示部α3の表示によって接続を正しい状態にしておく
。In the circuit diagram of Fig. 1, (1) is an analog switch section, (2) is a reactive power data output section, (3) is a control section, (
4) is the switch operating section. (5) is a -phase shift and waveform shaping section, (6) is a waveform shaping section, and (7) is an inverter (
(for phase inversion), (8) is an analog switch section, (9) is an analog switch section, 2 is an analog switch section, Qll
is a power transmission direction determination signal output unit. 021 is an inverter, and a3 is a reverse power transmission/misconnection indicator. (2) is an analog switch section (for input signal), α5 is an analog switch section, and Q61 is a capacitor storage section. First, at the stage of installing the control device of the present invention, the connection is set in the correct state by displaying the reverse direction power transmission/misconnection display section α3.
本発明装置は上記のような構成をとったので、アナログ
スイッチ部顛は、PTによるev位相を一移相かつ矩形
成形部(5)を通して成形された波形信号でスイッチン
グされる。逆方向送電か発生すると、送電方向判別信号
出力部0υからの出力信号により、8v位相を180°
反転させた矩形波形でアナログスイッチ部(1)かスイ
ッチングされることになる。このようにして、位相関係
は通常送電時と同じになる。又容量記憶部Q61に制御
するコンデンサα&もしくはりアクドルの容量を記憶さ
せておき、逆方向送電発生中の開閉器C171の投入信
号により、検出無効電力量か補正されるようにした。従
って、第2図に示す通り通常の送電方向においては、無
効電力状態がコンデンサもしくは、リアクトルの投入レ
ベル状態に達すると、投入信号により開閉器がONされ
、検出装置は相殺された無効電力量を検出することにな
り、又逆方向送電においても、検出装置はコンデンサ、
もしくはリアクトルの容量を見込まない電力量、即ち負
荷の無効電力そのままを検出しないように補正されるの
で、正確な動作が期待できるようになった。Since the device of the present invention has the above-described configuration, the analog switch section is switched by a waveform signal shaped through the rectangular shaping section (5) with one phase shift of the ev phase by the PT. When reverse power transmission occurs, the output signal from the power transmission direction determination signal output section 0υ changes the 8V phase to 180°.
The analog switch section (1) is switched using the inverted rectangular waveform. In this way, the phase relationship is the same as during normal power transmission. In addition, the capacitance of the capacitor α and the capacitor to be controlled is stored in the capacitance storage unit Q61, and the detected reactive power amount is corrected by the closing signal of the switch C171 during the occurrence of reverse power transmission. Therefore, in the normal power transmission direction as shown in Figure 2, when the reactive power state reaches the closing level of the capacitor or reactor, the switch is turned on by the closing signal, and the detection device detects the canceled amount of reactive power. Also, in reverse power transmission, the detection device is a capacitor,
Alternatively, accurate operation can be expected because the amount of power that does not take into account the capacity of the reactor, that is, the reactive power of the load is corrected so as not to be detected as it is.
本発明は上記のように装置に逆方向送電補償機能を持た
せることにより、逆送電時も装置を停止することなく良
好に動作させることが可能となり、優れた無効電力制御
装置を提供できた。By providing the device with a reverse power transmission compensation function as described above, the present invention enables the device to operate satisfactorily without stopping even during reverse power transmission, thereby providing an excellent reactive power control device.
第1図は本発明装置の実施例として示した回路図、第2
図は逆方向送電時の補正状態を示す回路図、
(ei)・・・電流信号、(ev)・・・電圧信号、(
1)■(141(15)・・・アナログスイッチ部、Q
ll・・・送電方向判別信号出力部、(161・・・容
量記憶部。
代理人 弁理士人 島 −公Fig. 1 is a circuit diagram shown as an embodiment of the device of the present invention;
The figure is a circuit diagram showing the correction state during reverse direction power transmission. (ei)...Current signal, (ev)...Voltage signal, (
1)■(141(15)...Analog switch section, Q
ll... Power transmission direction determination signal output unit, (161... Capacity storage unit. Agent Patent attorney Hito Shima - Public
Claims (1)
無効電流もしくは、無効電力を検出し無効電力を軽減さ
せる制御装置において、送電方向判別信号出力部を設け
、投入させるコンデンサもしくはりアクドルの定格電流
もしくは定格容量を記憶させる容量記憶部を有し、逆方
向送電時の検出無効電力もしくは無効電流を補正するよ
うアナログスイッチ部を設けたことを特徴とする無効電
力制御装置。(1) In a control device that detects reactive current or reactive power in the power transmission system using voltage and current signals of the power transmission system and reduces the reactive power, a power transmission direction determination signal output section is provided, and the rating of the capacitor or accelerator to be turned on is provided. 1. A reactive power control device comprising a capacity storage section for storing current or rated capacity, and an analog switch section for correcting detected reactive power or reactive current during reverse direction power transmission.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57032866A JPS58148628A (en) | 1982-03-01 | 1982-03-01 | Reactive power controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57032866A JPS58148628A (en) | 1982-03-01 | 1982-03-01 | Reactive power controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58148628A true JPS58148628A (en) | 1983-09-03 |
Family
ID=12370773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57032866A Pending JPS58148628A (en) | 1982-03-01 | 1982-03-01 | Reactive power controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58148628A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007113997A (en) * | 2005-10-19 | 2007-05-10 | Yazaki Corp | Liquid level sensor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56136136A (en) * | 1980-03-26 | 1981-10-24 | Matsushita Electric Ind Co Ltd | Advance phase condenser control device |
-
1982
- 1982-03-01 JP JP57032866A patent/JPS58148628A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56136136A (en) * | 1980-03-26 | 1981-10-24 | Matsushita Electric Ind Co Ltd | Advance phase condenser control device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007113997A (en) * | 2005-10-19 | 2007-05-10 | Yazaki Corp | Liquid level sensor |
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