JPS6287871A - Reactive power tide measuring apparatus - Google Patents
Reactive power tide measuring apparatusInfo
- Publication number
- JPS6287871A JPS6287871A JP60227682A JP22768285A JPS6287871A JP S6287871 A JPS6287871 A JP S6287871A JP 60227682 A JP60227682 A JP 60227682A JP 22768285 A JP22768285 A JP 22768285A JP S6287871 A JPS6287871 A JP S6287871A
- Authority
- JP
- Japan
- Prior art keywords
- reactive power
- power
- active power
- value
- active
- 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)
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】
〔発明の技術分野〕
本発明は電力系統運用の有効電力潮流の正方向または逆
方向を加味した無効電力の遅れまたは進みを判定する無
効電力潮流測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a reactive power flow measuring device that determines the delay or advance of reactive power in consideration of the forward or reverse direction of active power flow in power system operation.
無効電力は有効電力潮流の方向が一定とした場合の位相
角９０度以内の遅れまたは進みにより求められるもので
あるため、有効電力の正方向および逆方向に無関係に無
効電力が演算され、現在の無効電力は、遅れまたは進み
の表示を行なっている。Reactive power is determined by delay or advance within a phase angle of 90 degrees when the direction of active power flow is constant, so reactive power is calculated regardless of the forward and reverse directions of active power, and the current Reactive power is displayed as lagging or leading.
しかしながら遅れ無効電力が有効電力潮流正方向の時の
状態であったものが有効電力潮流逆方向になったとき、
無効電力表示の方向が変わらない状態では、電力系統運
用上は進み無効電力となり、現在の表示と、プラントの
運転状況が全く逆の判定をされるという問題があった。However, when the delayed reactive power is in the positive direction of the active power flow, when the active power flow is in the opposite direction,
In a state where the direction of the reactive power display does not change, the power system operation progresses to become reactive power, and there is a problem in that the current display and the operating status of the plant are determined to be completely opposite.
本発明は上記のような問題を解消するために成されたも
ので、その目的は、電力系統運用の現在プロセス値から
、有効電力の正逆潮流および無効電力の遅れ進みの両者
から無効電力の真の遅れ進みを判定することを可能とし
た無効電力潮流測定装置を提供することにある。The present invention has been made to solve the above-mentioned problems, and its purpose is to calculate reactive power from both forward and reverse flow of active power and lagging lead of reactive power from the current process values of power system operation. It is an object of the present invention to provide a reactive power flow measuring device that makes it possible to determine true lag/advancement.
本発明は現在電力系統運転状態を把握するため電力主回
路に接続された計器用変圧器の二次電圧である三相１１
０ｖ電圧、および変流器の二次電流である三相５Ａを入
力し、この入力値を有効電力演算し、有効電力正逆潮流
を求め、また同人力値を無効電力演算し遅れ進み無効電
力を求め、有効電力正逆結果および無効電力遅れ進み結
果より、現在有効電力潮流方向に於ける無効電力遅れ進
み潮流を求め、この結果を表示器に表示することにより
、真の遅れ進みをふまえた無効電力値を表示することを
特徴とする無効電力潮流測定装置である。The present invention uses the three-phase
Input the 0V voltage and the three-phase 5A which is the secondary current of the current transformer, calculate the active power from this input value, find the active power forward and reverse power flow, and calculate the reactive power from the same force value to obtain the lagging reactive power. Then, from the active power forward/reverse result and the reactive power lag/lead result, the reactive power lag/lead flow in the current active power flow direction is determined, and this result is displayed on the display to calculate the true lag/lead. This is a reactive power flow measuring device characterized by displaying reactive power values.
次に本発明の詳細な説明する。負荷３，４の容量により
電力潮流は正方向９または逆方向１ｏとなる。この正方
向９または逆方向１０の現在プロセス値を変流器５およ
び計器用変圧器６を介して、三相５Ａおよび三相１ｉｏ
ｖをプロセス値入力処理部１２に入力する。この値を用
い、有効電力潮流方向判定処理部１３で、 ＶＩｃｏｓ
θの演算を行いＣＯ５θが正値のとき、有効電力潮流は
正方向９、ｃｏｓ Ｏが負値のとき、有効電力潮流は逆
方向ｌＯと判定する。一方、入力値を用い、無効電力圧
／負判定処理部１４で、ＶＩｓｉｎ Ｏの演算を行い、
ｓｉｎθが負値のとき無効電力は負方向、 ｓｉｎθ
が正値のとき無効電力は正方向と判定するとともにＶ
Ｉｓｉｎθ の路体値を無効電力値とする。次に求めら
れた有効電力の正方向、逆方向および無効電力の正方向
、負方向の４個の正負条件を無効電力遅／進判定処理部
１５により演算する。この無効電力遅／進判定処理部１
５での処理は次の演算により行う。まず有効電力潮流の
正方向９のときで無効電力正方向のときは進み無効電力
であり、同条件下で無効電力負方向のときは遅れ無効電
力であると判定する。一方、有効電力潮流が逆方向１０
のときで無効電力正方向のときは、遅れ無効電力であり
、同条件下で無効電力負方向のときは、進み無効電力で
あると判定する。Next, the present invention will be explained in detail. Depending on the capacity of the loads 3 and 4, the power flow is in the forward direction 9 or in the reverse direction 1o. This current process value in the forward direction 9 or reverse direction 10 is transferred through a current transformer 5 and an instrument transformer 6 to three-phase 5A and three-phase 1io.
v is input to the process value input processing section 12. Using this value, in the active power flow direction determination processing section 13, VIcos
When θ is calculated, it is determined that when CO5θ is a positive value, the active power flow is in the positive direction 9, and when cos O is a negative value, the active power flow is determined to be in the reverse direction lO. On the other hand, using the input value, the reactive power pressure/negative determination processing unit 14 calculates VIsin O,
When sinθ is a negative value, the reactive power is in the negative direction, sinθ
When is a positive value, the reactive power is determined to be in the positive direction, and V
Let the road body value of Isinθ be the reactive power value. Next, the four positive/negative conditions of the positive and negative directions of the active power and the positive and negative directions of the reactive power are calculated by the reactive power slow/lead determination processing section 15. This reactive power slow/lead determination processing section 1
The processing in step 5 is performed by the following calculation. First, when the active power flow is in the positive direction 9 and the reactive power is in the positive direction, it is determined that it is leading reactive power, and when the reactive power is in the negative direction under the same conditions, it is determined that it is lagging reactive power. On the other hand, the active power flow is in the opposite direction 10
When the reactive power is in the positive direction under the same conditions, it is determined to be lagging reactive power, and when the reactive power is in the negative direction under the same conditions, it is determined to be leading reactive power.
以上の無効電力遅れ、進み判定結果と、無効電ヵ絶体値
演算結果を無効電力表示部１６に表示する。The reactive power delay and advance determination results and the reactive power absolute value calculation results are displayed on the reactive power display section 16.
これらの作用により有効電力潮流の方向をふまえた真の
無効電力の遅れ・進み状況が把握されたことになる。Through these effects, the true delay/advance situation of reactive power based on the direction of active power flow can be grasped.
以上説明したように本発明によれば、従来の無効電力指
示計の正負指示が、遅れか進みか判定できなかった監視
が、有効電力潮流の方向をふまえた無効電力の真の遅れ
、進みを監視できるため、電力系統運用上の有効無効電
力潮流監視の適確な判断および無効電力操作・制御の適
確な運用が図れるなど極めて適確な無効電力潮流測定装
置が提供できる。As explained above, according to the present invention, the monitoring that could not determine whether the positive or negative indication of the conventional reactive power indicator is delayed or advanced can now be used to detect the true delay or advance of reactive power based on the direction of active power flow. Since it can be monitored, it is possible to provide an extremely accurate reactive power flow measuring device that can make accurate judgments regarding active reactive power flow monitoring during power system operation and ensure accurate operation and control of reactive power.
第１図は本発明の一実施例を説明する無効電力潮流測定
装置の構成図、第２図は第１図の無効電力潮流測定装置
の詳細な構成図である。
１．２・・・電力供給源 ３，４・・・負荷５・・・
変流器 ６・・・計器用変圧器７・・・電力
指示計 ８・・・無効電力指示計９・・・有効電
力潮流正方向
１０・・・有効電力潮流逆方向
１１・・・無効電力潮流測定装置
１２・・・プロセス値入力処理部
１３・・・有効電力潮流方向判定処理部１４・・・無効
電力圧／負判定処理部
１５・・・無効電力遅／進判定処理部
１６・・・無効電力表示部
代理人 弁理士 則 近 憲 佑
同 三俣弘文
第 １ 図
第 ２ 図FIG. 1 is a configuration diagram of a reactive power flow measuring device illustrating an embodiment of the present invention, and FIG. 2 is a detailed configuration diagram of the reactive power flow measuring device of FIG. 1. 1.2...Power supply source 3,4...Load 5...
Current transformer 6... Instrument transformer 7... Power indicator 8... Reactive power indicator 9... Active power flow forward direction 10... Active power flow reverse direction 11... Reactive power Power flow measuring device 12...Process value input processing section 13...Active power flow direction judgment processing section 14...Reactive power pressure/negative judgment processing section 15...Reactive power slow/advanced judgment processing section 16...・Reactive Power Display Department Representative Patent Attorney Nori Chika Ken Yudo Hirofumi Mitsumata Figure 1 Figure 2
Claims (1)
方向又は逆方向を判定する有効電力潮流演算部 （ハ）前記入力値を用いて無効電力の正方向または逆方
向を判定する無効電力演算部 （ニ）前記有効電力の正方向又は逆方向及び前記無効電
力の正方向又は逆方向を用いて有効電力潮流に対応した
無効電力の遅れ又は進み状況を判定する判定演算部 （ホ）この判定演算部の判定結果による無効電力の遅れ
又は進みを含む無効電力値を表示する表示装置[Claims] A reactive power flow measuring device comprising the following components. (B) Input processing unit that inputs the process value (B) Active power flow calculation unit that uses the input value from this input processing unit to determine whether the active power is in the forward or reverse direction (C) Invalidation using the input value Reactive power calculation unit that determines the forward direction or reverse direction of power (d) Delay or delay of reactive power corresponding to the active power flow using the forward direction or reverse direction of the active power and the forward direction or reverse direction of the reactive power Judgment calculation unit that judges the progress status (e) A display device that displays the reactive power value including delay or advance of reactive power based on the judgment result of this judgment calculation unit
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60227682A JPS6287871A (en) | 1985-10-15 | 1985-10-15 | Reactive power tide measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60227682A JPS6287871A (en) | 1985-10-15 | 1985-10-15 | Reactive power tide measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6287871A true JPS6287871A (en) | 1987-04-22 |
Family
ID=16864678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60227682A Pending JPS6287871A (en) | 1985-10-15 | 1985-10-15 | Reactive power tide measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6287871A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0707216A3 (en) * | 1994-10-13 | 1996-09-25 | Gen Electronik Gmbh Bei Magdeb | Method and clip-on current probe for determining the compensation capacity of an electrical network |
| JP2022113378A (en) * | 2021-01-25 | 2022-08-04 | 中国電力株式会社 | electricity meter |
-
1985
- 1985-10-15 JP JP60227682A patent/JPS6287871A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0707216A3 (en) * | 1994-10-13 | 1996-09-25 | Gen Electronik Gmbh Bei Magdeb | Method and clip-on current probe for determining the compensation capacity of an electrical network |
| JP2022113378A (en) * | 2021-01-25 | 2022-08-04 | 中国電力株式会社 | electricity meter |
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