WO2011013187A1 - Dispositif auto-excité de compensation d'énergie réactive - Google Patents

Dispositif auto-excité de compensation d'énergie réactive Download PDF

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Publication number
WO2011013187A1
WO2011013187A1 PCT/JP2009/063325 JP2009063325W WO2011013187A1 WO 2011013187 A1 WO2011013187 A1 WO 2011013187A1 JP 2009063325 W JP2009063325 W JP 2009063325W WO 2011013187 A1 WO2011013187 A1 WO 2011013187A1
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Prior art keywords
self
voltage
excited
reactive power
control unit
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PCT/JP2009/063325
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English (en)
Japanese (ja)
Inventor
泰久 堀田
眞男 船橋
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東芝三菱電機産業システム株式会社
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Application filed by 東芝三菱電機産業システム株式会社 filed Critical 東芝三菱電機産業システム株式会社
Priority to JP2011524550A priority Critical patent/JP5490801B2/ja
Priority to PCT/JP2009/063325 priority patent/WO2011013187A1/fr
Publication of WO2011013187A1 publication Critical patent/WO2011013187A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
    • H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • 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
    • Y02E40/20—Active power filtering [APF]

Definitions

  • the present invention relates to a self-excited reactive power compensator, and more particularly to a self-excited reactive power compensator used in a power system.
  • Self-excited reactive power compensators such as STATCOM (Static Synchronous Compensator), SVG (Static Var Generator) or self-excited SVC (Static Var Compensator), are designed to improve system stability by controlling system reactive power. Often introduced.
  • the self-excited reactive power compensator is effective not only for improving the stability of the system during steady operation, but also for improving the transient stability of the system during and after a system fault.
  • control unit of the self-excited reactive power compensator is generally configured as follows. That is, the control unit outputs a reactive current command so that the system voltage follows the desired system voltage command (main loop), and power so that the output current of the power converter follows this reactive current command.
  • a current control loop (secondary loop) for controlling the output voltage of the converter.
  • Patent Document 1 discloses a semiconductor power conversion device that can control an output AC current at high speed following a set AC current.
  • This power converter includes a feedforward power control circuit that generates an output voltage command of a semiconductor power converter from the phase and amplitude of a set alternating current.
  • the output voltage command from the feedforward power control circuit is corrected based on the deviation between the set AC current and the system current. Further, the power converter is controlled based on the sum of the system voltage and the corrected output voltage command.
  • Non-patent Document 1 Hasegawa et al., “8MVA GTO-SVG Development Test”, IEEJ National Convention, 1989, 8-305-306 (Non-Patent Document 1)
  • a configuration is disclosed in which the stop of the inverter is released and the inverter is restarted after returning to step (1).
  • STATCOM includes a smoothing capacitor for smoothing an AC voltage, and a self-excited converter (inverter) that outputs reactive power to the power system using the voltage smoothed by the smoothing capacitor.
  • inverter self-excited converter
  • STATCOM stops switching of the switching element in the self-excited converter when the power system is interrupted and a stop command for stopping STATCOM is received from the host device, and then for maintenance of the device.
  • the circuit breaker provided between the STATCOM and the power system is opened, and the smoothing capacitor is discharged. Therefore, when the stop command is released and STATCOM is restarted, it is necessary to charge the smoothing capacitor first.
  • this charging usually takes 1 to 2 minutes, and after charging the smoothing capacitor, switching of the switching element in the self-excited converter is resumed. For this reason, it takes several minutes until the power system recovers from the power failure, the stop command from the host device is canceled, and STATCOM resumes operation.
  • This invention was made in order to solve the above-mentioned subject, and the purpose is to resume operation at an early stage when the stop command is canceled in a state where the operation is stopped in response to the stop command. It is to provide a possible self-excited reactive power compensator.
  • a self-excited reactive power compensator includes a capacitor for smoothing an alternating voltage, and a power that is coupled to a power system having a plurality of phases, includes a switching element, and is smoothed by the capacitor.
  • a self-excited converter for outputting reactive power to the power system, a first voltage detector for detecting the voltage of the power system, and a second for detecting the voltage across the capacitor.
  • the reactive power output from the self-excited converter to the power system is controlled by switching the switching element based on the generated current.
  • a control unit and a charger for charging the capacitor, and the control unit controls the charger so that a voltage detected by the second voltage detector is equal to or higher than a first predetermined value. The charging control is performed so as to charge the capacitor.
  • the operation when the operation is stopped in response to the stop command, the operation can be resumed early when the stop command is canceled.
  • FIG. 1 is a configuration diagram of a self-excited reactive power compensator according to a first embodiment of the present invention.
  • 1 is a circuit diagram of a self-excited converter 1.
  • FIG. It is a wave form diagram which shows operation
  • It is a figure which shows the stop sequence and restart sequence of the self-excited reactive power compensation apparatus which concern on the 1st Embodiment of this invention.
  • It is a wave form diagram which shows the operation
  • FIG. 1 is a configuration diagram of a self-excited reactive power compensator according to a first embodiment of the present invention.
  • self-excited reactive power compensator 101 includes self-excited converter 1, converter transformer 2, voltage detector 4, current detector 5, charger 51, and discharger 52. And a discharger 53, a voltage detector 9, a control unit 10, and a smoothing capacitor C.
  • the charger 51 includes a transformer 7, a rectifier 8, a resistor R1, and a switch SWA.
  • Discharger 52 includes a resistor R2 and a switch SWC.
  • Discharger 53 includes a resistor R3 and a switch SWB.
  • the charger 51 is provided to charge the capacitor C. More specifically, the transformer 7 transforms the AC voltage received from the AC power supply 6 via the switch SWA and the resistor R1 and outputs it to the rectifier 8.
  • the rectifier 8 is a diode rectifier, for example, and rectifies the AC voltage received from the transformer 7 and outputs it to the smoothing capacitor C.
  • the smoothing capacitor C smoothes the voltage rectified by the rectifier 8.
  • the voltage detector 9 detects the voltage across the capacitor C.
  • Self-excited converter 1 is coupled to power system 3 having u-phase, v-phase, and w-phase, includes a self-extinguishing type switching element, and is disabled to power system 3 based on the voltage smoothed by capacitor C Output power.
  • the converter transformer 2 transforms the voltage output from the self-excited converter 1 and outputs it to the power system 3.
  • the discharger 53 is provided for normal discharge of the smoothing capacitor C.
  • the discharger 52 is provided for rapid discharge of the smoothing capacitor C.
  • the discharger 53 has a discharge time constant larger than that of the discharger 52. That is, the resistance value of the resistor R2 in the discharger 52 is smaller than the resistance value of the resistor R3 in the discharger 53.
  • the switch SWB in the discharger 53 is, for example, a mechanical switch, and the switch SWC in the discharger 52 is, for example, a semiconductor switch.
  • the reliability of the self-excited reactive power compensator 101 can be improved by the configuration including the discharger 53 using a mechanical switch that is more reliable than the semiconductor switch, apart from the discharger 52.
  • the discharger 52 is provided to instantaneously reduce the voltage across the smoothing capacitor C to a predetermined level as will be described later. That is, since the discharger 52 only needs to discharge a part of the electric charge of the smoothing capacitor C by the configuration including the discharger 53 separately from the discharger 52, a resistor having a large rated capacity is used as the resistor R3 of the discharger 52. There is no need to use it, and the cost can be reduced.
  • FIG. 2 is a circuit diagram of the self-excited converter 1.
  • self-excited converter 1 includes switching elements Q1-Q6 and diodes D1-D6.
  • the switching elements Q1 to Q6 are, for example, GTO (Gate Turn Off thyristor), but are not limited to this as long as they are self-extinguishing type switching elements.
  • Diodes D1-D6 are connected in antiparallel to switching elements Q1-Q6, respectively.
  • a driving signal (gate pulse signal) is supplied from the control unit 10 to each of the switching elements Q1 to Q6.
  • the switching elements Q1 to Q6 perform a switching operation in accordance with the drive signal, convert the voltage smoothed by the smoothing capacitor C, that is, a DC voltage into an AC voltage, and supply it to the power system 3.
  • the voltage detector 4 detects the voltage (system voltage) of the power system 3.
  • the voltage detected by the voltage detector 4 is given to the control unit 10 as a feedback voltage.
  • the current detector 5 detects the output current of the self-excited converter 1, that is, the current flowing between the power system 3 and the self-excited converter 1.
  • the current detected by the current detector 5 is given to the control unit 10 as a feedback current.
  • the control unit 10 includes an amplitude detection unit 11, a reactive current detection unit 12, a voltage command generation unit 13, subtracters 14 and 16, a voltage control unit 15, a reactive current control unit 17, and a gate pulse generation unit 21. Including.
  • the control unit 10 controls the switching element based on the voltage detected by the voltage detector 4 and the current detected by the current detector 5, thereby reactive power output from the self-excited converter 1 to the power system 3. To control.
  • the amplitude detector 11 detects the amplitude value Vs by calculating the amplitude value Vs of the system voltage detected by the voltage detector 4, and subtracts the calculated (detected) amplitude value Vs.
  • the electric power system 3 includes a u phase, a v phase, and a w phase.
  • the amplitude detector 11 calculates an amplitude value Vs based on the following equation.
  • Vs (Vu 2 + Vv 2 + Vw 2 ) 1/2
  • the voltage command generator 13 generates and outputs a voltage command Vref indicating the reference value of the amplitude value Vs.
  • the reference value of the amplitude value Vs indicated by the voltage command Vref is constant.
  • the subtractor 14 calculates the deviation ⁇ V by subtracting the amplitude value Vs from the voltage command Vref, and gives the deviation ⁇ V to the voltage control unit 15.
  • the voltage control unit 15 is configured as an arithmetic unit that performs PI (Proportional Integral) control.
  • the voltage control unit 15 calculates a current reference Iref for reducing the input deviation ⁇ V, and outputs the current reference Iref.
  • the current reference Iref corresponds to the reference value of the reactive current Iq output from the self-excited converter 1.
  • the reactive current detector 12 detects the reactive current Iq output from the self-excited converter 1 based on the output current of the self-excited converter 1 detected by the current detector 5. Specifically, the reactive current detector 12 detects the reactive current Iq by performing three-phase / two-phase conversion on the u-phase current, the v-phase current, and the w-phase current detected by the current detector 5.
  • the subtractor 16 calculates the deviation ⁇ I by subtracting the reactive current Iq from the current reference Iref, and gives the deviation ⁇ I to the reactive current control unit 17.
  • the reactive current control unit 17 is configured as an arithmetic unit that performs PI control.
  • the reactive current control unit 17 calculates a voltage reference Vi for reducing the input deviation ⁇ I, and gives the voltage reference Vi to the gate pulse generation unit 21.
  • the gate pulse generator 21 generates switching signals Q1 to Q6 in the self-excited converter 1, for example, according to PWM (Pulse Width Modulation) control, for the self-excited converter 1 to output a voltage corresponding to the voltage reference Vi. To supply.
  • PWM Pulse Width Modulation
  • the voltage reference Vi is obtained as an output of a control system obtained by adding a current minor loop control using the reactive current control unit 17 as a controller to a voltage feedback control system using the voltage control unit 15 as a controller. With this control system, the voltage reference Vi can be changed following the change in the system voltage.
  • FIG. 3 is a waveform diagram showing the operation of the self-excited reactive power compensator according to the first embodiment of the present invention.
  • VC is a voltage across the smoothing capacitor C.
  • FIG. 4 is a diagram showing a stop sequence and a restart sequence of the self-excited reactive power compensator according to the first embodiment of the present invention.
  • control unit 10 in self-excited reactive power compensator 101 turns off switch SWA and turns on switch SWB at time t0, that is, before the start command is received from the host device.
  • Switch SWC is turned off.
  • the smoothing capacitor C is reliably discharged by the discharger 53, and the maintainability of the apparatus can be improved.
  • the control unit 10 receives a start command from the host device, turns on the switch SWA, and turns off the switch SWB.
  • the smoothing capacitor C is charged by the charger 51, that is, the voltage VC across the smoothing capacitor C is increased by the AC voltage supplied from the AC power supply 6.
  • control unit 10 When the voltage VC reaches a predetermined value V2 larger than the predetermined value V1 at time t2, the control unit 10 turns off the switch SWA. Thereby, the charging of the smoothing capacitor C by the charger 51 is stopped. Then, control unit 10 outputs a drive signal to switching elements Q1 to Q6, and restarts switching of switching elements Q1 to Q6. Even after the switch SWA is turned off, the capacitor C is charged by the switching of the switching elements Q1 to Q6, so that the voltage VC is maintained at a predetermined value V2 or more.
  • step S1 the power system 3 is blacked out, and a stop command is output from the host device to the self-excited reactive power compensator 101 (step S1).
  • the voltage VC greatly increases due to the power from the power system 3.
  • the control unit 10 receives this stop command from the host device and stops the output of the drive signals to the switching elements Q1 to Q6, thereby stopping the switching of the switching elements Q1 to Q6, that is, the self-excited converter 1 Stop. Thereby, the output of the reactive power from the self-excited reactive power compensator 101 to the power system 3 is stopped (step S2).
  • the control unit 10 turns off the switch SWC. Thereby, the rapid discharge of the smoothing capacitor C by the discharger 52 is stopped. Even after the switch SWC is turned off, the voltage VC decreases.
  • the control unit 10 turns on the switch SWA until the voltage VC reaches the predetermined value V2. As a result, the smoothing capacitor C is charged by the charger 51.
  • the power system 3 recovers from the power failure and the stop command from the host device is released (step S3).
  • the control unit 10 releases the stop of the self-excited converter 1, that is, outputs a drive signal to the switching elements Q1 to Q6, and resumes switching of the switching elements Q1 to Q6. (Step S4). Thereby, the output of the reactive power from the self-excited reactive power compensator 101 to the power system 3 is resumed (step S5).
  • the control unit 10 controls the charger 51 so that the voltage across the capacitor C becomes equal to or higher than the predetermined value V1.
  • charging control for charging the capacitor C is performed. More specifically, the control unit 10 performs charge control when the voltage detected by the voltage detector 9 is less than the predetermined value V1, and the voltage detected by the voltage detector 9 is greater than the predetermined value V1 and higher than the predetermined value V3.
  • the charging control is stopped.
  • the self-excited reactive power compensator in the state where the operation is stopped in response to the stop command, the operation can be resumed early when the stop command is canceled. it can.
  • the self-excited reactive power compensator according to the first embodiment of the present invention includes a discharger 52 for discharging the capacitor C. Then, when the voltage detected by the voltage detector 9 becomes equal to or higher than a predetermined value V3 larger than the predetermined value V1, the control unit 10 controls the discharger 52 to discharge the capacitor C.
  • the control unit 10 turns on the switch SWA and starts the charging operation of the charger 51 when the voltage VC becomes less than the predetermined value V1.
  • the switch SWA may be turned on immediately after receiving a stop command from the host device, and the charging operation of the charger 51 may be started.
  • the present embodiment relates to a self-excited reactive power compensator in which the stop sequence and the restart sequence are changed as compared with the self-excited reactive power compensator according to the first embodiment.
  • the contents other than those described below are the same as those of the self-excited reactive power compensator according to the first embodiment.
  • FIG. 5 is a configuration diagram of a self-excited reactive power compensator according to the second embodiment of the present invention.
  • self-excited reactive power compensator 102 is further provided with a circuit breaker CB and not a discharger 52 as compared with the self-excited reactive power compensator according to the first embodiment of the present invention.
  • the circuit breaker CB is provided to interrupt the electrical connection between the power system 3 and the self-excited converter 1.
  • FIG. 6 is a waveform diagram showing the operation of the self-excited reactive power compensator according to the second embodiment of the present invention.
  • VC is the voltage across the smoothing capacitor C.
  • FIG. 7 is a diagram illustrating a stop sequence and a restart sequence of the self-excited reactive power compensator according to the second embodiment of the present invention.
  • control unit 10 in self-excited reactive power compensator 102 turns off switch SWA and turns on switch SWB at time t0, that is, before the start command is received from the host device. Open the circuit breaker CB.
  • the smoothing capacitor C is reliably discharged by the discharger 53, and the maintainability of the apparatus can be improved. Further, by opening the circuit breaker CB, it is possible to prevent the smoothing capacitor C from being charged by the power from the power system 3.
  • the control unit 10 receives a start command from the host device, turns on the switch SWA, turns off the switch SWB, and turns on the circuit breaker CB. Thereby, the electric power system 3 and the self-excited converter 1 are electrically connected. Further, the smoothing capacitor C is charged by the charger 51, that is, the voltage VC across the smoothing capacitor C is increased by the AC voltage supplied from the AC power supply 6.
  • control unit 10 When the voltage VC reaches a predetermined value V2 larger than the predetermined value V1 at time t2, the control unit 10 turns off the switch SWA. Thereby, the charging of the smoothing capacitor C by the charger 51 is stopped. Then, control unit 10 outputs a drive signal to switching elements Q1 to Q6, and restarts switching of switching elements Q1 to Q6. Even after the switch SWA is turned off, the capacitor C is charged by the switching of the switching elements Q1 to Q6, so that the voltage VC is maintained at a predetermined value V2 or more.
  • step S11 the power system 3 is blacked out, and a stop command is output from the host device to the self-excited reactive power compensator 102 (step S11).
  • the voltage VC greatly decreases.
  • the control unit 10 receives this stop command from the host device and stops the output of the drive signals to the switching elements Q1 to Q6, thereby stopping the switching of the switching elements Q1 to Q6, that is, the self-excited converter 1 Stop. Thereby, the output of the reactive power from the self-excited reactive power compensator 102 to the power system 3 is stopped (step S12).
  • step S13 the control part 10 interrupts
  • the control unit 10 turns on the switch SWA. As a result, the smoothing capacitor C is charged by the charger 51.
  • the control unit 10 turns off the switch SWA. Thereby, the charging of the smoothing capacitor C by the charger 51 is stopped.
  • the power system 3 returns from the power failure and the stop command from the host device is released (step S14).
  • the control unit 10 releases the stop of the self-excited converter 1, that is, outputs a drive signal to the switching elements Q1 to Q6, and resumes switching of the switching elements Q1 to Q6. (Step S15).
  • control part 10 electrically connects the electric power grid
  • step S17 The output of the reactive power from the self-excited reactive power compensator 102 to the power system 3 is restarted through steps S15 and S16 (step S17).
  • control unit 10 receives the stop command for stopping the self-excited reactive power compensator 102 and switches the switching elements Q1 ⁇ The switching of Q6 is stopped, and the circuit breaker CB is controlled to cut off the electrical connection between the power system 3 and the self-excited converter 1. Then, when the stop command is released, control unit 10 resumes switching of switching elements Q1 to Q6, and controls breaker CB to electrically connect power system 3 and self-excited converter 1.
  • the self-excited reactive power compensator in the state where the operation is stopped in response to the stop command, the operation is resumed as soon as the stop command is released. can do.
  • the smoothing capacitor C can be prevented from being overcharged by the electric power from the power system 3 until the stop command is canceled after the stop command is received, the self-according to the first embodiment. Compared with the excited reactive power compensator, the discharger 52 becomes unnecessary.
  • 1 self-excited converter 2 transformer, 4 voltage detector, 5 current detector, 7 transformer, 8 rectifier, 9 voltage detector, 10 control unit, 11 amplitude detection unit, 12 reactive current detection unit, 13 Voltage command generator, 14, 16 subtractor, 15 voltage controller, 17 reactive current controller, 21 gate pulse generator, 51 charger, 52 discharger, 53 discharger, 101, 102 self-excited reactive power compensator, C smoothing capacitor, R1, R2, R3 resistance, SWA, SWB, SWC switch, Q1-Q6 switching element, D1-D6 diode, CB breaker.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

L'invention porte sur un dispositif auto-excité de compensation d'énergie réactive comportant un condensateur (C) destiné à lisser une tension alternative, un convertisseur auto-excité (1) couplé à un système d'alimentation (3) multiphasé et comprenant un élément de commutation afin de délivrer en sortie une énergie réactive au système d'alimentation (3) en fonction de l'énergie électrique lissée par le condensateur (C), et une unité de commande (10) destinée à commander l'énergie réactive délivrée en sortie par le convertisseur auto-excité (1) au système d'alimentation (3) par commutation de l'élément de commutation en fonction de la tension du système d'alimentation (3) détectée par un premier détecteur de tension (4) et d'un courant électrique circulant entre le système d'alimentation (3) et le convertisseur auto-excité (1), détecté par un détecteur de courant (5). L'unité de commande (10) commande un chargeur (51) pour ainsi réaliser une commande de charge destinée à charger le condensateur (C) de telle sorte que la tension entre les deux bornes du condensateur (C), détectée par un second détecteur de tension (9) est une égale ou supérieure à une première valeur prédéterminée.
PCT/JP2009/063325 2009-07-27 2009-07-27 Dispositif auto-excité de compensation d'énergie réactive WO2011013187A1 (fr)

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Application Number Priority Date Filing Date Title
JP2011524550A JP5490801B2 (ja) 2009-07-27 2009-07-27 自励式無効電力補償装置
PCT/JP2009/063325 WO2011013187A1 (fr) 2009-07-27 2009-07-27 Dispositif auto-excité de compensation d'énergie réactive

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PCT/JP2009/063325 WO2011013187A1 (fr) 2009-07-27 2009-07-27 Dispositif auto-excité de compensation d'énergie réactive

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014203356A (ja) * 2013-04-08 2014-10-27 株式会社東芝 無効電力補償装置
JP6261842B1 (ja) * 2017-05-18 2018-01-17 三菱電機株式会社 無効電力補償装置およびその制御方法
WO2019164425A1 (fr) * 2018-02-21 2019-08-29 Telefonaktiebolaget Lm Ericsson (Publ) Commande de puissance réactive dans des systèmes d'alimentation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0956072A (ja) * 1995-08-18 1997-02-25 Nissin Electric Co Ltd 自励式無効電力補償装置の運転方法
JP2002247760A (ja) * 2001-02-15 2002-08-30 Toshiba Corp 直列補償装置の起動方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0956072A (ja) * 1995-08-18 1997-02-25 Nissin Electric Co Ltd 自励式無効電力補償装置の運転方法
JP2002247760A (ja) * 2001-02-15 2002-08-30 Toshiba Corp 直列補償装置の起動方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014203356A (ja) * 2013-04-08 2014-10-27 株式会社東芝 無効電力補償装置
JP6261842B1 (ja) * 2017-05-18 2018-01-17 三菱電機株式会社 無効電力補償装置およびその制御方法
WO2018211658A1 (fr) * 2017-05-18 2018-11-22 三菱電機株式会社 Dispositif de compensation de puissance réactive et son procédé de commande
US11101656B2 (en) 2017-05-18 2021-08-24 Mitsubishi Electric Corporation Reactive power compensation device and method for controlling the same
WO2019164425A1 (fr) * 2018-02-21 2019-08-29 Telefonaktiebolaget Lm Ericsson (Publ) Commande de puissance réactive dans des systèmes d'alimentation
US10985562B2 (en) 2018-02-21 2021-04-20 Telefonaktiebolaget Lm Ericsson (Publ) Reactive power control in power systems

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