JPH05153731A - Power system training simulator - Google Patents
Power system training simulatorInfo
- Publication number
- JPH05153731A JPH05153731A JP7596991A JP7596991A JPH05153731A JP H05153731 A JPH05153731 A JP H05153731A JP 7596991 A JP7596991 A JP 7596991A JP 7596991 A JP7596991 A JP 7596991A JP H05153731 A JPH05153731 A JP H05153731A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- reclosing
- power system
- accident
- reclosing relay
- 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
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000004088 simulation Methods 0.000 abstract description 18
- 230000001681 protective effect Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Supply And Distribution Of Alternating Current (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電力系統を実時間で模
擬して、平常状態及び事故状態における電力系統操作を
訓練するための電力系統訓練シミュレータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power system training simulator for simulating a power system in real time and training power system operation under normal conditions and accident conditions.
【０００２】[0002]
【従来の技術】図４によって従来の電力系統訓練シミュ
レータの構成を説明する。図４において、１は電力系統
模擬手段で、電力系統の応動を実時間で模擬し、その結
果を模擬系統データファイル２へ格納する。３は模擬系
統監視制御手段で、模擬系統データファイル２から系統
状態量を入力し、被訓練者（以下トレーニと称す）用マ
ン・マシン装置４に表示させたり、トレーニの操作や制
御信号を操作制御データファイル５を介して、電力系統
模擬手段１に渡す。６は保護リレー判定手段で、事故発
生手段７による事故発生時や、模擬系統監視制御手段３
からの系統操作により、事故点が再加圧されたと電力系
統模擬手段１が判断した場合に起動され、動作する保護
リレーやしゃ断器（以下ＣＢと称す）を決定し、電力系
統模擬手段１に通知する。訓練指導者（以下トレーナと
称す）用マン・マシン装置８は事故発生手段７を起動し
たり、現地操作の代行を電力系統模擬手段１に通知す
る。2. Description of the Related Art The configuration of a conventional power system training simulator will be described with reference to FIG. In FIG. 4, reference numeral 1 denotes a power system simulation means, which simulates the response of the power system in real time and stores the result in the simulated system data file 2. 3 is a simulated system monitoring and control means, which inputs the system state quantity from the simulated system data file 2 and displays it on the man-machine device 4 for trainees (hereinafter referred to as trainee), and operates trainees and control signals. It is passed to the power system simulation means 1 via the control data file 5. Reference numeral 6 is a protection relay determination means, which is used when an accident occurs by the accident occurrence means 7 or when the simulated system monitoring control means 3
When the power system simulating means 1 determines that the accident point has been repressurized by the system operation from, the protection relay and breaker (hereinafter referred to as CB) that are activated are determined, and the power system simulating means 1 is selected. Notice. A man-machine device 8 for a training instructor (hereinafter referred to as a trainer) activates the accident occurrence means 7 or notifies the power system simulation means 1 of a substitute for on-site operation.
【０００３】そして、再閉路リレーの模擬を行なう場合
は、トレーナが予め動作結果を予想して、動作するリレ
ーと投入するＣＢをトレーナ用マン・マシン装置８から
投入ＣＢスケジューリング手段９を用いて登録してお
く。訓練中はそのスケジュールに従って、電力系統模擬
手段１へ通知することで再閉路リレーの動作の模擬を行
なっていた。あるいは、再閉路リレーの動作の模擬を行
なうことができなかった。図５は投入ＣＢのスケジュー
ルの一例である。この例は、２回線事故により高速再閉
路の失敗後、低速再閉路リレーが動作し、片側の送電線
に事故が残っている場合のスケジュール例である。When simulating the reclosing relay, the trainer predicts the operation result in advance and registers the operated relay and the CB to be closed from the trainer man-machine device 8 using the closing CB scheduling means 9. I'll do it. During the training, the operation of the reclosing relay was simulated by notifying the power system simulation means 1 according to the schedule. Alternatively, it was not possible to simulate the operation of the reclosing relay. FIG. 5 is an example of a schedule of input CB. This example is an example of a schedule when the low speed reclosing relay operates after the failure of the high speed reclosing due to a two-line accident and the accident remains on the transmission line on one side.
【０００４】[0004]
【発明が解決しようとする課題】上記したように再閉路
リレー動作については、従来は全く考慮されていなかっ
たか、あるいはＣＢの投入スケジュールを予め登録して
おいて模擬を行なう方式であった。このような方法で
は、訓練中にトレーナが系統の状態及び保護リレー動作
からの時間を考慮しながら操作しなければならず、ある
いは、事故によるしゃ断ＣＢに対する再閉路リレー動作
による投入ＣＢをトレーナが全て設定しなければならな
い上、訓練中に系統構成が変化した場合には、それに応
じてトレーナが投入ＣＢを投入しなくしたり、投入して
も再しゃ断したりする必要がるという問題点があった。As described above, the reclosing relay operation has not been considered at all in the past, or the CB closing schedule has been registered in advance and the simulation has been performed. In such a method, the trainer must operate while taking into consideration the state of the system and the time from the protection relay operation during training, or the trainer must make all the closing CB for the reclosing relay operation for the interruption CB due to an accident. In addition to the need to set it, there was a problem that if the system configuration changed during the training, the trainer would have to stop inputting CB or cut off again even if it was input. ..
【０００５】本発明は上記事情に鑑みてなされたもので
あり、系統構成や事故種別を考慮して動作する保護リレ
ーに加えて、系統構成，系統の電圧状態，事故種別を考
慮して動作する再閉路リレーを実時間で決定し、訓練を
効果的に行なうことの可能な電力系統訓練シミュレータ
を提供することを目的としている。The present invention has been made in view of the above circumstances, and operates in consideration of a system configuration, a voltage state of the system, and an accident type in addition to a protection relay that operates in consideration of the system configuration and an accident type. It is an object of the present invention to provide a power system training simulator capable of determining a reclosing relay in real time and effectively performing training.
【０００６】[0006]
【課題を解決するための手段及び作用】上記目的を達成
するため、本発明では電力系統の訓練シミュレータに、
系統事故に対して動作する保護リレーと、しゃ断するし
ゃ断器に応じて動作する再閉路リレーと、投入するしゃ
断器を予め決められたルールに従って決定する再閉路リ
レー動作判定手段を付加する構成とした。ここで、再閉
路リレー動作判定手段は、事故の場所と種別及び保護リ
レー動作判定手段の判定結果をもとにし、事故発生後の
系統状態（接続及び電圧状態）をチェックし、予め決め
られたスケジュールに従って動作する再閉路リレー及び
投入するしゃ断器を決定する。そして、その決定された
結果に従って再閉路リレーに関する電力系統模擬が行な
われる。この時、再閉路動作によって、事故継続中の事
故点が再加圧された場合は、再しゃ断の模擬も行なう。
この場合、トレーナが予め設定したおかなければならな
いものは、事故発生時刻と事故点及び事故種別だけでよ
い。事故種別とは、短絡／地絡の区別や事故相及び事故
継続時間等の事故固有の情報をさす。In order to achieve the above-mentioned object, the present invention provides a training simulator for a power system,
A protection relay that operates against a system fault, a reclosing relay that operates according to a circuit breaker that is to be interrupted, and a reclosing circuit operation determination unit that determines the circuit breaker to be closed according to a predetermined rule are added. .. Here, the reclosing relay operation judging means checks the system status (connection and voltage status) after the accident based on the location and type of the accident and the judgment result of the protection relay operation judging means, and is determined in advance. Determine the reclosing relay and the circuit breaker to be operated according to the schedule. Then, the power system simulation for the reclosing relay is performed according to the determined result. At this time, if the accident point during the accident is repressurized by the reclosing operation, a simulation of recutting is also performed.
In this case, all that the trainer has to set in advance is the accident occurrence time, the accident point, and the accident type. The accident type refers to information unique to the accident, such as short-circuit / ground fault distinction, accident phase, and accident duration.
【０００７】[0007]
【実施例】以下図面を参照して実施例を説明する。図１
は本発明による電力系統訓練シミュレータを説明する一
実施例の構成図であり、図１において図４と同一部分に
ついては同一符号を付して説明を省略する。10は再閉路
リレー動作判定手段で、保護リレー動作判定手段６によ
って保護リレーが動作すると決定した時に起動され、動
作する再閉路リレーや投入ＣＢを決定し、電力系統模擬
手段１に通知する。再閉路リレー動作判定手段10は、事
故発生から１秒以内の動作判定が必要な高速再閉路リレ
ー動作判定手段と、10秒から数分程度の比較的長い時間
にわたって動作判定が必要な中低速再閉路リレー動作判
定手段の２つに分けることができる。Embodiments will be described below with reference to the drawings. Figure 1
FIG. 3 is a configuration diagram of an embodiment for explaining a power system training simulator according to the present invention. In FIG. 1, the same parts as those in FIG. Reference numeral 10 is a reclosing relay operation determining means, which is activated when the protection relay operation determining means 6 determines that the protection relay operates, determines the reclosing relay and the closing CB to operate, and notifies the power system simulating means 1. The reclosing relay operation judging means 10 includes a high-speed reclosing relay operation judging means which requires an operation judgment within 1 second from the occurrence of an accident, and a medium-low speed re-judgment which requires an operation judgment over a relatively long time of 10 seconds to several minutes. It can be divided into two types of circuit-relay operation determining means.
【０００８】以下では２つの再閉路リレー動作判定手段
に関して、そのアルゴリズムを説明する。高速再閉路リ
レー動作判定手段は事故発生手段７による事故発生時
や、模擬系統監視制御手段３からの系統操作により、事
故点が再加圧されたと電力系統模擬手段１が判断した場
合に、起動された保護リレー動作判定手段６が決定した
動作保護リレーとしゃ断ＣＢに対応して動作判定を行な
う。The algorithm of the two reclosing relay operation determining means will be described below. The high-speed reclosing relay operation determination means is started when the accident occurs by the accident occurrence means 7 or when the power system simulation means 1 determines that the accident point is repressurized by the system operation from the simulated system monitoring control means 3. The operation determination is performed corresponding to the operation protection relay and the interruption CB determined by the protection relay operation determination means 6 thus determined.
【０００９】図２は高速再閉路リレー動作判定手段の処
理内容の一例を示しており、これが予め決められたルー
ルに対応するものになる。起動された高速再閉路リレー
動作判定手段は、まず、模擬系統の状態データの中から
該当する再閉路リレーの準備状態データを取り出し、ス
テップS21 で準備完了かどうかの判定を行ない、完了で
なければ高速再閉路リレーの模擬を行なわずに、ステッ
プS22 で最終しゃ断という結果を電力系統模擬手段１へ
通知する。一方、準備完了であった場合には、高速再閉
路リレーの動作が可能と判断され、以下のステップが実
行される。ステップS23 では高速再閉路実施のための条
件が成立しているかどうかを判定する。条件としては、
事故相と健全相の関係及び隣送電線の潮流状態が判定に
使用される。このステップS23 で条件が不成立と判定さ
れると、ステップS24 で条件不成立及び高速再閉路不実
施という結果を電力系統模擬手段１へ通知する。FIG. 2 shows an example of processing contents of the high speed reclosing relay operation judging means, which corresponds to a predetermined rule. The activated high-speed reclosing relay operation judging means first takes out the preparation status data of the corresponding reclosing relay from the status data of the simulated system, judges in step S21 whether or not the preparation is completed, and if not completed, Without simulating the high speed reclosing relay, the result of the final interruption is notified to the power system simulating means 1 in step S22. On the other hand, when the preparation is completed, it is determined that the operation of the high speed reclosing relay is possible, and the following steps are executed. In step S23, it is determined whether or not the condition for executing high-speed reclosing is satisfied. As a condition,
The relationship between the accident phase and the sound phase and the power flow state of the adjacent transmission line are used for judgment. When it is determined that the condition is not satisfied in step S23, the result that the condition is not satisfied and the high-speed reclosing is not performed is notified to the power system simulation means 1 in step S24.
【００１０】ステップS23 で条件成立と判定された場合
は、更にステップS25 において設定された事故状態が継
続中であるか、消滅しているかをトレーナが予め設定し
ている事故継続時間から判断して決定する。事故が消滅
していると判定された場合は、ステップS26 において再
閉路成功という結果を、事故が継続中と判定された場合
は、ステップS27 において再閉路失敗という結果を、電
力系統模擬手段１へ通知する。If it is determined in step S23 that the condition is satisfied, it is further determined from the accident duration preset by the trainer whether the accident state set in step S25 is continuing or disappearing. decide. If it is determined that the accident has disappeared, the result of reclosing is successful in step S26, and if it is determined that the accident is continuing, the result of reclosing is failed in step S27 to the power system simulating means 1. Notice.
【００１１】次に、中低速再閉路リレー動作判定手段に
ついて説明する。中低速再閉路リレー動作判定手段は、
高速再閉路リレーが設置されていない個所に対して、事
故発生手段７を用いて事故を発生させた時及び上記の高
速再閉路リレー動作判定手段において、再閉路不実施又
は再閉路失敗と判定して電力系統模擬手段１へ通知した
場合に、該当する中低速再閉路リレーの動作時刻を電力
系統模擬手段１が定周期で判定して、動作時刻になった
時に電力系統模擬手段１によって起動される。Next, the medium / low speed reclosing relay operation determining means will be described. The medium-low speed reclosing relay operation judgment means is
When an accident occurs using the accident occurrence means 7 at a place where no high-speed reclosing relay is installed, and when the high-speed reclosing relay operation judging means judges that reclosing is not performed or reclosing fails. If the power system simulating means 1 is notified by the power system simulating means 1, the power system simulating means 1 determines the operation time of the corresponding medium-low speed reclosing relay in a fixed cycle, and when the operation time comes, the power system simulating means 1 is activated. It
【００１２】図３は中低速再閉路リレー動作判定手段の
処理内容の一例を示しており、図２と同様に、これが予
め決められたルールに対応するものになる。起動された
中低速再閉路リレー動作判定手段は、まず、模擬系統の
状態データの中から該当する再閉路リレーの準備状態デ
ータを取り出し、ステップS31 で準備完了かどうかの判
定を行ない、完了でなければ中低速再閉路リレーの模擬
を行なわずに、ステップS32 で最終しゃ断という結果を
電力系統模擬手段１へ通知する。FIG. 3 shows an example of the processing contents of the medium / low speed reclosing relay operation judging means, and like FIG. 2, this corresponds to a predetermined rule. The activated medium-low-speed reclosing relay operation determination means first takes out the preparation state data of the corresponding reclosing relay from the state data of the simulated system, determines whether or not the preparation is completed in step S31, and if it is completed, For example, without simulating the medium-low speed reclosing relay, the result of the final interruption is notified to the power system simulating means 1 in step S32.
【００１３】一方、準備完了であった場合には、中低速
再閉路リレーの動作が可能と判断され、以下のステップ
が実行される。ステップS33 では該当の中低速再閉路リ
レーの設置個所が送電端か受電端かを判定し、その判定
結果に応じて処理内容が変わる。送電端と判定された場
合はステップS34 へ進み、ここで、中低速再閉路実施の
ための条件が成立しているかどかを判定する。条件とし
ては、該当のしゃ断されているＣＢの両端の電圧（母線
電圧と線路電圧）に関して、母線電圧ありでかつ線路電
圧なしであれば、条件成立と判定する。ステップS34 で
条件不成立と判定されると、ステップS35 で再閉路不実
施が最終しゃ断という結果を電力系統模擬手段１へ通知
する。On the other hand, when the preparation is completed, it is judged that the operation of the medium / low speed reclosing relay is possible, and the following steps are executed. In step S33, it is determined whether the installation location of the corresponding medium-low speed reclosing relay is the power transmission end or the power reception end, and the processing content changes depending on the determination result. If it is determined to be the power transmission end, the process proceeds to step S34, where it is determined whether or not the condition for executing the medium-low speed reclosing is satisfied. As for the condition, with respect to the voltage (bus voltage and line voltage) across the corresponding cut off CB, if the bus voltage is present and the line voltage is not present, it is determined that the condition is satisfied. When it is determined that the condition is not satisfied in step S34, the result that the reclosing is not performed is the final cutoff is notified to the power system simulation means 1 in step S35.
【００１４】ステップS34 において、条件成立と判定さ
れた場合は、更にステップS36 において設定された事故
状態が、継続中であるか消滅しているかを、トレーナが
予め設定している事故継続時間から判断して決定する。
事故が消滅していると判定された場合は、ステップS37
において再閉路成功という結果を、事故が継続中と判定
された場合は、ステップS38 において再閉路失敗という
結果を、電力系統模擬手段１へ通知する。If it is determined in step S34 that the condition is satisfied, it is further determined from the accident duration preset by the trainer whether the accident state set in step S36 is continuing or disappearing. And decide.
If it is determined that the accident has disappeared, step S37.
When it is determined that the result of the reclosing is successful in step S38, the result of the failure of the reclosing is notified to the power system simulation means 1 in step S38.
【００１５】ステップS33 において受電端と判定された
場合はステップS39 へ進み、ここで送電端の場合と同様
に、中低速再閉路実施のための条件が成立しているかど
うかを判定する。条件としては、該当のしゃ断されてい
るＣＢの両端電圧に関して、線路電圧ありでかつ母線電
圧なし、又は線路電圧ありでかつ母線電圧ありでかつ両
端が同一系統に属しているならば条件成立と判定する。
ステップS39 で条件不成立と判定されると、ステップS4
0 で再閉路不実施及び最終しゃ断という結果を電力系統
模擬手段１へ通知する。ステップS41 以降はステップS3
6 からステップS38 と同じ処理なので省略する。上記の
処理はあくまで一例であり、各判定ステップでの判定条
件を実系統に合わせて変更したり、条件ステップの追加
を行なうことにより、実系統に合わせた詳細な模擬を行
なうことが可能となる。If it is determined in step S33 that the terminal is the power receiving end, the process proceeds to step S39, where it is determined whether or not the conditions for executing the medium-low speed reclosing are satisfied, as in the case of the power transmitting end. Regarding the condition, regarding the voltage between both ends of the corresponding cut off CB, it is determined that the condition is satisfied if there is a line voltage and no bus voltage, or if there is a line voltage and a bus voltage and both ends belong to the same system. To do.
If the condition is not satisfied in step S39, step S4
At 0, the results of the non-implementation of the reclosing and the final cutoff are notified to the power system simulation means 1. After step S41, step S3
Since the process is the same as that from step 6 to step S38, it will be omitted. The above processing is just an example, and it is possible to perform a detailed simulation according to the actual system by changing the determination condition at each determination step according to the actual system or by adding a condition step. ..
【００１６】[0016]
【発明の効果】以上説明したように、本発明によれば事
故点と事故種別及び事故発生時刻といった事故固有の情
報を設定するだけで、訓練中に動作する保護リレーだけ
でなく、再閉路リレーに関しても実時間で正確に判定
し、模擬することができる。これにより、トレーナの負
担の軽減を図ることが可能となる。又、正確な模擬によ
り、訓練の効果を飛躍的に上げることが可能である。As described above, according to the present invention, only the accident-specific information such as the accident point, the accident type, and the accident occurrence time is set, and not only the protection relay that operates during the training but also the reclosing relay. With respect to, it is possible to accurately determine and simulate in real time. This makes it possible to reduce the burden on the trainer. Moreover, the effect of the training can be dramatically improved by the accurate simulation.
【図１】本発明による電力系統訓練シミュレータを説明
するための一実施例の構成図。FIG. 1 is a configuration diagram of an embodiment for explaining a power system training simulator according to the present invention.
【図２】高速再閉路リレー動作判定手段の処理内容を説
明するフローチャート。FIG. 2 is a flowchart for explaining the processing contents of a high speed reclosing relay operation determination means.
【図３】中低速再閉路リレー動作判定手段の処理内容を
説明するフローチャート。FIG. 3 is a flowchart for explaining the processing contents of a medium / low speed reclosing relay operation determination means.
【図４】従来の電力系統訓練シミュレータを説明するた
めの構成図。FIG. 4 is a configuration diagram for explaining a conventional power system training simulator.
【図５】従来行なっていた投入ＣＢのスケジューリング
の一例図。FIG. 5 is a diagram showing an example of a conventional scheduling of input CB.
１ 電力系統模擬手段 ２ 模擬系統データファイル ３ 模擬系統監視制御手段 ４ 被訓練者用マン・マシン装置 ５ 操作制御データファイル ６ 保護リレー動作判定手段 ７ 事故発生手段 ８ トレーナ用マン・マシン装置 ９ 投入ＣＢスケジューリング手段 10 再閉路リレー動作判定手段 1 Electric Power System Simulation Means 2 Simulated System Data Files 3 Simulated System Monitoring and Control Means 4 Trainee Man / Machine Equipment 5 Operation Control Data File 6 Protective Relay Operation Judgment Means 7 Accident Occurring Means 8 Trainer Man / Machine Equipment 9 Input CB Scheduling means 10 Reclosing relay operation judging means
Claims (1)
系統模擬手段と、模擬系統の状態を表示し被訓練者の操
作や制御信号を、前記電力系統模擬手段へ送る模擬系統
監視制御手段と、設定された系統事故に対して動作する
保護リレーとしゃ断するしゃ断器を、予め決められたル
ールに従って決定する保護リレー動作判定手段からなる
電力系統訓練シミュレータにおいて、動作する保護リレ
ーとしゃ断するしゃ断器に対して応動する再閉路リレー
と投入するしゃ断器を決定する再閉路リレー動作判定手
段を備えたことを特徴とする電力系統訓練シミュレー
タ。1. A power system simulating means for simulating the response of the power system in real time, and a simulated system monitoring control means for displaying the state of the simulated system and sending the trainee's operation and control signals to the power system simulating means. And a circuit breaker that cuts off a protection relay that operates against a set system fault according to a predetermined rule.In a power system training simulator that includes protection relay operation determination means, a circuit breaker that cuts off the protection relay that operates. A power system training simulator comprising a reclosing relay that responds to a switch and a reclosing relay operation determination means that determines a breaker to be turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7596991A JP3133092B2 (en) | 1991-02-12 | 1991-02-12 | Power system training simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7596991A JP3133092B2 (en) | 1991-02-12 | 1991-02-12 | Power system training simulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05153731A true JPH05153731A (en) | 1993-06-18 |
| JP3133092B2 JP3133092B2 (en) | 2001-02-05 |
Family
ID=13591570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7596991A Expired - Lifetime JP3133092B2 (en) | 1991-02-12 | 1991-02-12 | Power system training simulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3133092B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665379B1 (en) * | 2004-10-30 | 2007-01-04 | 한국전력공사 | Training-Purpose HVDC Controller for Power System Engineers and operating method thereof |
| KR100863672B1 (en) * | 2006-10-31 | 2008-10-15 | 한국전력공사 | Training simulator of distribution automation system and drivig method there of |
| CN113327471A (en) * | 2021-05-17 | 2021-08-31 | 国家电网有限公司 | Relay protection tripping circuit troubleshooting training device and method |
-
1991
- 1991-02-12 JP JP7596991A patent/JP3133092B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665379B1 (en) * | 2004-10-30 | 2007-01-04 | 한국전력공사 | Training-Purpose HVDC Controller for Power System Engineers and operating method thereof |
| KR100863672B1 (en) * | 2006-10-31 | 2008-10-15 | 한국전력공사 | Training simulator of distribution automation system and drivig method there of |
| CN113327471A (en) * | 2021-05-17 | 2021-08-31 | 国家电网有限公司 | Relay protection tripping circuit troubleshooting training device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3133092B2 (en) | 2001-02-05 |
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