WO2014155648A1 - Système générateur d'énergie et procédé de commande de système générateur d'énergie - Google Patents

Système générateur d'énergie et procédé de commande de système générateur d'énergie Download PDF

Info

Publication number
WO2014155648A1
WO2014155648A1 PCT/JP2013/059446 JP2013059446W WO2014155648A1 WO 2014155648 A1 WO2014155648 A1 WO 2014155648A1 JP 2013059446 W JP2013059446 W JP 2013059446W WO 2014155648 A1 WO2014155648 A1 WO 2014155648A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit breaker
power
generation system
power generation
generator
Prior art date
Application number
PCT/JP2013/059446
Other languages
English (en)
Japanese (ja)
Inventor
日野　徳昭
智道 伊藤
尚弘 楠見
哲郎 森崎
高橋　一雄
コーテット アウン
Original Assignee
株式会社 日立製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社 日立製作所 filed Critical 株式会社 日立製作所
Priority to PCT/JP2013/059446 priority Critical patent/WO2014155648A1/fr
Priority to JP2015507855A priority patent/JP6101787B2/ja
Publication of WO2014155648A1 publication Critical patent/WO2014155648A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/40—Synchronising a generator for connection to a network or to another generator
    • H02J3/42—Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters

Definitions

  • the present invention relates to a power generation system, and more particularly to a power generation system that starts in cooperation with a system.
  • Patent Document 1 discloses a method for improving the performance of the twin-shaft gas turbine.
  • Patent Document 1 describes an apparatus in which a generator is attached to both shafts of a two-shaft gas turbine and electric power is obtained from both the generators.
  • the gas turbine starting method is described in, for example, Japanese Patent Application Laid-Open No. 6-264766 (Patent Document 2) and Japanese Patent Publication No. 59-9737 (Patent Document 3). That is, the compressor and the first turbine are rotated by the starter motor, and after the rotational speed has increased to a predetermined value, the fuel is ignited to obtain the compressor driving force. Then, adjust the fuel and intake air amount to increase the number of revolutions to the rated number of revolutions, and after the grid voltage of the grid and the terminal voltage phase difference of the generator are within the specified range, between the generator and the power grid The installed circuit breaker is inserted and the grid connection of the gas turbine power generation system is terminated.
  • Patent Document 2 Japanese Patent Application Laid-Open No. 6-264766
  • Patent Document 3 Japanese Patent Document 3
  • the impedance of the main generator is larger than that of the system side, and when the system is connected, the harmonic current flowing into the generator is small, so the loss is small and there are few problems.
  • all the harmonic currents of the inverter flow into the main generator, causing loss. For this reason, there is a problem that impairs the efficiency of the power generation system and the reliability of the generator.
  • the present application includes a plurality of means for solving the above-described problems.
  • a power source a generator driven by the power source, and a first provided between the generator and the AC system.
  • a circuit breaker A power converter connected between the generator and the first circuit breaker; a second circuit breaker provided between the first circuit breaker and the power converter; and A power generation system including a deblocker and a controller for controlling opening and closing of the first circuit breaker and the second circuit breaker, wherein the control device includes the first circuit breaker and the second circuit breaker.
  • the power generation system of the present invention it is possible to suppress the flow of current from the inverter to the main generator, reduce the loss of the main generator during start-up, stop, and standby, and improve the reliability of the power generation system.
  • the inverter and the main generator are connected to the system at the same time. It is possible to suppress the increase in the loss of the main generator mainly flowing in the system, and to perform highly efficient operation.
  • Example 1 of the present invention will be described with reference to FIG.
  • a power generation system 1 includes a main generator 3 driven by a power source 2, a power conversion unit 5, and a controller 10, and the power conversion unit 5 supplies power from a DC power source 7.
  • the main generator 3 is connected to the system 100 via the circuit breaker 61, and the power converter 5 is connected between the main generator 3 and the AC system 100 via the circuit breaker 62.
  • the circuit breaker 61 is first closed to After connecting the machine 3 and the AC system 100, the circuit breaker 62 is closed and the power conversion unit 5 is connected to the main generator 3.
  • a circuit breaker is provided and controlled so that a state where the switching power converter 5 is connected to the generator 3 does not occur.
  • the power converter 5 is connected to the main generator 3.
  • the power supplied from the power conversion unit 5 is used for applications that absorb fast power fluctuations in the AC system 100 that cannot respond in time to the main generator 3 when the power generation system 1 transmits power to the system 100. May be.
  • the harmonics may affect the generator. For example, the same effects as those of the present embodiment described later can be obtained.
  • the reason why the power conversion unit 5 is deblocked during startup of the power generation system is based on the assumption that power is mainly supplied to the starter 4 for starting the power source, but is not limited thereto.
  • the power converter 5 is deblocked to supply power to drive the starter during the start-up of the power generation system, and the same Use of the power conversion unit 5 during normal operation is advantageous in terms of cost.
  • the main generator 3 is preferably a synchronous generator, but is not limited thereto.
  • the DC power source 7 for supplying power to the power converter 5 may be a DC power source such as a storage battery or a buffer for a capacitor, or a power source composed of another generator and a transformer / rectifier. As described above, it may be electric power supplied from a rotating machine coaxial with the compressor, or a combination thereof.
  • the power converter 5 generates harmonic current due to switching, whether it is a current-type or voltage-type single-phase to multi-phase inverter using IGBT, thyristor, or MOSFET, or a multi-level or multi-level inverter. The same effect as this embodiment can be obtained.
  • the inverter may be used as a rectifier on the contrary, and the power conversion function is not limited to the conversion from direct current to alternating current even if described as the inverter. Also, depending on the combination of inverters, it can also be an AC / AC converter such as a step-down transformer, and other power conversion means can be substituted, so the means for converting these powers is collectively referred to as a power conversion unit There is also.
  • Each circuit breaker is a generic term for devices having the function of connecting or disconnecting general electrical connections, and can be implemented by a switch, a switch, a certain protection circuit, or the like.
  • the present invention is characterized by the following procedure.
  • both the circuit breaker 61 and the circuit breaker 62 are open.
  • the power source 2 is started and the rotational speed of the main generator 3 is increased.
  • the power converter 5 is deblocked as necessary.
  • the circuit breaker 61 is closed and power transmission can be started.
  • the circuit breaker 62 is closed, and the power converter 5 is connected to the main generator 3 and the system 100 line.
  • the power converter 5 generates a harmonic current by switching or the like, and affects the connected peripheral devices.
  • the main generator 3 When the circuit breaker 61 and the circuit breaker 62 are both closed during normal operation of the power generation system, the main generator 3 generally has an impedance 3 to 10 times that of the system, and harmonics from the power converter 5 Almost flows into system 100.
  • the auxiliary power supply 555 having the power converter 5 is connected to the main generator 5 in a state where the main generator 3 is not connected to the system 100. Because most of the harmonics flow into the main generator 3, an electrical loss occurs in the main generator, and the harmonic component is included in the driving power of the generator, reducing the reliability of the generator There is.
  • harmonic current When an inverter that generates harmonic current is connected to a generator, harmonic current is induced in the armature winding of the generator. Excess current flows, heat generation increases, and a heating phenomenon may occur, leading to an accident. Furthermore, vibrations may occur in the rotor due to harmonic components. These may reduce the reliability of the generator. In addition, since the harmonic becomes an antiphase component, it works in the direction of weakening the magnetic flux, and accordingly, the output of the generator is lowered and there is a fear that the rotational speed increase speed of the generator is lowered.
  • a power generation system that uses the rotational energy of a two-shaft gas turbine as an auxiliary power source is supplied to the power converter 5 by supplying power generated by a motor connected to the compressor by a shaft. The method is shown.
  • the motor 4 is gas When used together as a turbine starter, there is a problem that harmonics enter the generator 3 when the power generation system is started.
  • the phenomenon that the AC system works as a ground for the harmonics generated by the voltage converter normally can be used in a simple start-up sequence efficiently even at the start-up of the power generation system, and shut off at the start-up.
  • the control for opening and closing the generator it is possible to obtain the effect of suppressing the harmonic inflow to the generator 3.
  • gas turbine power generation systems generally have a shorter start-up time than steam turbine power generation systems, they are expected to contribute to system stabilization when introducing renewable energy through short-time start-up.
  • the gas turbine power generation system includes a single shaft gas turbine power generation system in which a compressor, a turbine, and a generator are mechanically connected to one shaft.
  • the second turbine is provided on a first turbine and a second shaft that is not mechanically connected to the first turbine shaft, and the second turbine is rotated by exhaust of the first turbine, whereby the second turbine is rotated.
  • There is a two-shaft gas turbine power generation system that generates electric power by rotating a rotor of a generator mechanically connected to a second turbine shaft.
  • a twin-shaft gas turbine has the advantage of being compact and capable of generating high output.
  • the gas turbine 2 mainly includes a compressor 20 that compresses air, a combustor 21 that mixes and burns fuel supplied from a fuel tank (not shown) and compressed air supplied from the compressor 20, and exhaust expansion of the combustor 21
  • the high-pressure turbine 22 that rotates by receiving force
  • the low-pressure turbine 23 that receives exhaust from the turbine 22 and obtains rotational torque
  • a rotary shaft 24 that transmits to the side turbine 22 and a rotary shaft 25 that is connected to the low-pressure turbine 23 and transmits the rotational torque to the rotor of the generator 3 are configured.
  • the compressor 20 of the gas turbine 2 may be provided with an inlet guide vane (hereinafter referred to as IGV) 26 for adjusting the air flow rate sucked by the compressor, and a fuel injection amount adjusting valve 27 for the combustor 21. .
  • IGV inlet guide vane
  • Fuel is supplied to the combustor 21 via pipes 270 and 271.
  • the air compressed by the compressor 20 is supplied to the combustor 21 through the pipe 201.
  • Exhaust gas from the combustor 21 is supplied to the high-pressure turbine 22 through the pipe 210.
  • FIG. 4 shows the configuration of the second embodiment of the present invention.
  • the inverter 5 is a device that drives the motor 4.
  • a harmonic filter 85 may be used.
  • the voltage is converted by the transformer 82 in order to match the voltages of the inverter 51 and the main generator 3, and the breaker 62 is placed on the system side.
  • a transformer 83 is placed on the generator side of the circuit breaker 61 in order to match the voltages of the system 100 and the main generator 3.
  • the main generator 3 rotates coaxially with the low-pressure turbine 23, and keeps constant rotation to stabilize the system frequency.
  • the compressor 20, the high-pressure turbine 22 and the motor 4 are connected to the rotary shaft 24, but it is not always necessary to perform constant rotation. Therefore, if the speed of the rotating shaft 24 is made variable, the rotational energy can be converted into electric power using the motor 4 and the inverter 5 on the flywheel principle, and input / output to / from the system.
  • This can be regarded as an auxiliary power source composed of the power converter 5 and the DC power source 7 in the first embodiment.
  • Compressor speed N_HPC is measured by the rotation speed sensor 70.
  • This inverter 5 has a configuration in which two inverters 5A and 5B are connected by DC terminals and a capacitor is provided between them so that electric power can be sent in both directions.
  • a generator 92 is connected to a direct current portion between 5A and 5B via a rectifier 91.
  • the input signals to the controller 10 are the power load command MWD, the output P_GEN of the main generator 3 and the rotational speed N_GEN, and the motor output P_GEN and the rotational speed N_HPC of the high-pressure shaft 24.
  • the gas turbine 2 sends the fuel command Fuel_CMD and the IGV opening command IGV_CMD
  • the motor 4 sends the torque command Tq_CMD so that the sum of the generator output P_GEN and the motor output P_MOT matches the output command.
  • the starting method of this electric power generation system which is the 2nd Example of this invention is demonstrated using FIG. First, the generator 92 is activated with the circuit breaker 62 not turned on and not connected.
  • the voltage is converted into a direct current by the rectifier 91, and a voltage is applied to the direct current circuit between the inverters 5A and 5B.
  • the inverter 5B is deblocked, the motor 4 is driven, and the rotation speed of the compressor 20 is increased.
  • combustion is started in the combustor 21 and gradually increased until the rated rotation is reached.
  • the low-pressure turbine 23 starts rotating.
  • the inverter 5A remains blocked, the harmonic current of the inverter 5B is also applied to the transformer 82. However, no loss occurs in the main generator 3 because it is disconnected by the circuit breaker 62.
  • the gas turbine can be operated independently by the same procedure as in the first embodiment, the power from the generator 92 is stopped, and the motor 4 stops working.
  • the main generator 3 is controlled synchronously and is supplied to the system 100 by the circuit breaker 61 so that normal power generation becomes possible.
  • the circuit breaker 62 is turned on to cooperatively control both the motor 4 and the main generator 3.
  • the feature of the present embodiment is that the circuit breaker 62 is turned on after the circuit breaker 61 is turned on, so that the harmonic current caused by the inverter 5B that is starting the power generation system flows into the main generator 3. Can be prevented.
  • the inverter is used for startup for a long time, and it is possible to effectively suppress the harmonic loss of the generator from when deblocking of the initial inverter 5B is started to when the breaker 62 is turned on. .
  • connection place of the generator 92 that supplies power for driving the motor 4 may be between the inverter 5 ⁇ / b> A and the circuit breaker 62. Further, the connection place may be between the inverter 5B and the motor 4.
  • the generator 92 is an AC generator and is connected in parallel between the transformer 82 and the inverter via the circuit breaker 64. In this method, the AC power of the emergency generator 92 is converted to DC by the inverter 5A, and the motor 41 is driven by the inverter 5B.
  • the gas turbine is started with the circuit breaker 62 opened, and after the gas turbine normally generates power, the circuit breaker 62 is turned on and the motor 41 and Start coordinated control of generator 3. With this control method, the harmonic current flowing from the inverter 5 into the main generator 3 during startup can be eliminated.
  • FIG. 7 shows a configuration diagram of the gas turbine power generation system 1 of the present embodiment.
  • electric power for driving the motor 4 at the time of starting the gas turbine is supplied from the AC system 100.
  • switching means for freely switching the connection relationship between the power converter 5, the generator 3, and the AC system 100 is provided in a form including the circuit breaker 61 and the circuit breaker 62.
  • the configuration of this embodiment is effective in that it is not necessary to install a separate generator in order to secure electric power for driving the motor 4.
  • the power conversion unit 5 is connected to both the generator 3 side and the AC system 100 side of the circuit breaker 61, and switching means for switching the connection state by connecting or disconnecting these two connections. Is provided.
  • the starting method of the power generation system 1 in FIG. 7 is shown in FIG. 8 and is as follows. Initially, the power source 2, the generator 3, and the inverter 5 are stopped, and all circuit breakers are opened. After closing the circuit breaker 65, the power converter 5 is deblocked, and the motor 4 is driven to increase the rotational speed of the compressor. After confirming the gas turbine ignition, the circuit breaker 65 is opened to stop the driving of the motor 4, the circuit breaker 61 is closed after the generator 3 is synchronized with the system at a predetermined number of revolutions, and then the circuit breaker 62 is closed.
  • the switching means in this embodiment can also be implemented by connection as shown in FIG.
  • FIG. 9 In the power generation system of FIG. 9, there are two circuit breakers of a circuit breaker 61 and a circuit breaker 66 between the generator 3 and the AC system 100, and the power conversion unit 5 is connected to the circuit breaker 61 and the circuit breaker via the circuit breaker 62. It has the structure connected between 66.
  • the switching means in the present embodiment may have any other form as long as it has a function of appropriately switching the connection relationship between the inverter 5, the generator 3, and the AC system 100.
  • switching means is provided to supply electric power for driving the motor 4 from the AC system 100.
  • the motor 4 is connected to the starting motor 42 and the rotating shaft as shown in FIG.
  • the starter motor 42 can be divided into the motor 41 that inputs and outputs energy, and can also be implemented by connecting to the AC system 100 via the step-down transformer 81 and the circuit breaker 63.
  • another generator 92 may be provided to supply power to the starter motor 41.
  • the storage battery 7 may be provided in the DC part between the inverter 5A and the inverter 5B. In that case, the inverter 5B may be deblocked when the power generation system 1 is started, and the power of the storage battery 7 may be used to drive the motor 41. Conversely, the power generated by the motor 41 may be used as the storage battery 7 or the direct current. It may be stored in the capacitor of the part in preparation for the output fluctuation of the AC system 100.
  • control contents performed by the controller 10 in this embodiment are the same as those in the third embodiment except for the devices added as described above, and the command to the circuit breaker 65 is changed to the command to the circuit breaker 63 and the generator 92. Replacement and conforms to the contents of the flowchart of the third embodiment.
  • FIG. 12 shows a configuration diagram of a gas turbine power generation system 1 according to a fifth embodiment of the present invention.
  • the gas turbine power generation system 1 is mainly composed of a gas turbine 2 as a power source, a main generator 3 and a controller 10, and the gas turbine provides power to the shaft, and the main generator converts the shaft input into electric power.
  • the electric power generated by the main generator 3 is connected to the AC system 100 via the circuit breaker 61.
  • the DC power source 7 is connected to the AC system 100 via the inverter 5 and the circuit breaker 62 in parallel with the main generator. This is a configuration to cope with power fluctuations due to renewable energy, etc., and the power generation system 1 as a whole outputs a large amount of power from the main generator 3, and a small and steep fluctuation power from the auxiliary power source consisting of the DC power source 7 and the inverter 5. To do.
  • the inverter 5 since the inverter 5 is directly connected only to the generator 3, more harmonic current may flow into the generator 3, which improves the efficiency and reliability of the generator 3. The effect is greater than in the other embodiments.
  • the gas turbine 2 may be uniaxial or multi-axial.
  • the phenomenon in which the AC system 100 works as a ground for the harmonics generated by the inverter 5 can be used efficiently and with a simple start-up sequence even when the power generation system 1 is started. As a result, the effect of suppressing the harmonic inflow to the generator 3 can be obtained.
  • DC power supply 7 includes, for example, a combination of a storage battery, a generator and a rectifier.
  • a starter motor 4 connected to the shaft of the gas turbine 2 may be installed.
  • the power source of the starter motor 4 may be obtained from a system in the system, may be obtained from a power source prepared separately in the system, or a transformer 81 and a circuit breaker 63 as shown in FIG. It may be obtained from the system 100 via
  • the inverter 5 in this embodiment is a two-level inverter composed of three arms in which two IGBT elements are connected in series.
  • IGBT elements 5m to 5r are composed of an IGBT and a diode connected in reverse parallel to the IGBT.
  • the gate signal GateSig output from the controller 10 is input to the gate which is the control electrode of the IGBT elements 5m to 5r, and the IGBT is controlled to be turned on / off.
  • the inverter 5 outputs an AC voltage including harmonic components to the terminals U, V, and W by adjusting the on / off time ratio of the IGBT element.
  • Reactor 5fil is provided to suppress the harmonic current generated by the voltage harmonic.
  • DC power supply 7 is connected to terminals P and N, and DC power supply 7 supplies DC power to inverter 5 or supplies a constant DC voltage by charging DC power.
  • the inverter 5 may be connected to the main generator 3 and the AC system 100 via the transformer 5tr, and may be a harmonic filter with the effect of reducing harmonics due to leakage inductance. Furthermore, by using the transformer 5tr, it becomes possible to select an IGBT having an appropriate voltage / current specification regardless of the voltage of the AC system 100, so that the effect of increasing the degree of design freedom can be obtained.
  • the inverter 5 has the same effect even if it is a multi-level inverter represented by a three-level inverter as shown in FIG.
  • FIG. 15 shows the starting state of such a gas turbine power generation system.
  • the circuit breaker 63 is turned on, and the starting motor 4 is driven.
  • the rotational speed of the gas turbine 2 increases.
  • fuel is injected into the gas turbine 2 and combustion starts, and the rotational speed is increased by both the output of the gas turbine itself and the motor power.
  • the motor power is disconnected by the circuit breaker 63, and the rotation speed is increased while increasing the output of the gas turbine.
  • control is performed to synchronize the AC voltage and phase of the main generator 3 and the system 100 next.
  • the circuit breaker 61 is turned on and power generation can be started.
  • the circuit breaker 62 is turned on, and the inverter 5 is connected to the system.
  • the output voltage of the inverter 5 needs to be synchronized with the system 100 voltage as well as the synchronous control of the main generator 3. Therefore, switching of the inverter 5 is started (deblocked) in advance. At this time, even if the output command of the inverter 5 is set to zero, if the main generator 3 is not disconnected by the circuit breaker 62, harmonic current caused by switching flows through the main generator 3. This harmonic current has a problem of causing a flow loss in the stator winding of the main generator 3. However, if the circuit breaker 62 is used for cutting, there is no loss in the main generator 3. In this embodiment, the circuit breaker 62 is turned on after the circuit breaker 61 is turned on.
  • the harmonic current of the inverter 5 mainly flows to the system 100 side after the circuit breaker 61 is turned on.
  • the system 100 side and the main generator 3 side are parallel, and a current flows through the parallel circuit in inverse proportion to the impedance.
  • the impedance of the system is sufficiently smaller than the impedance of the generator, so that the harmonic current hardly flows into the main generator 3 after the circuit breaker 61 is turned on. For this reason, the circuit breaker 62 may be placed after the circuit breaker 61 is turned on.
  • This example relates to control when the power generation system 1 is stopped or when power transmission to the AC system 100 is interrupted. This will be described with reference to FIG.
  • the circuit breaker 61 When stopping the power generation system or interrupting power transmission to the AC system 100, the circuit breaker 61 is opened to disconnect the power generation system 1 from the AC system 100. At that time, the power conversion unit 5 is in operation. If the circuit breaker 62 is closed, the harmonic current generated in the power converter 5 may flow into the generator 3 in large quantities, and the problem of reducing the reliability of the generator is the same as when the power generation system is started. It is in.
  • the sequence for separating the power generation system 1 and the AC system 100 in this embodiment can be implemented by a power generation system having the structure described in the first to fifth embodiments.
  • the situation where the power converter 5 is activated in the present embodiment is assumed at the start stage of the sequence to be disconnected, the situation where the power converter 5 that was present at the start of the power generation system 1 is moved is, for example, the starter 4 or the like Configuration requirements are not mandatory.
  • the control content of the controller 10 in this embodiment is as shown in FIG.
  • the generator 3 is disconnected from the AC system 100 by first opening the circuit breaker 62 and then opening the circuit breaker 61.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Turbines (AREA)

Abstract

La présente invention vise à empêcher le courant de passer d'un onduleur à un générateur d'énergie principal afin de réduire la perte du générateur d'énergie principal, en améliorant ainsi la fiabilité d'un système générateur d'énergie. Le système générateur d'énergie comprend : une source d'énergie ; un générateur d'énergie entraîné par la source d'énergie ; un premier disjoncteur placé entre le générateur d'énergie et un système à courant alternatif ; une unité de conversion d'énergie reliée entre le générateur d'énergie et le premier disjoncteur; un second disjoncteur placé entre le premier disjoncteur et l'unité de conversion d'énergie ; et une unité de commande servant à commander le déblocage de l'unité de conversion d'énergie, ainsi que l'ouverture et la fermeture des premier et second disjoncteurs. Dans le système générateur d'énergie, l'unité de commande est conçue de telle sorte que, lorsqu'elle délivre une commande pour débloquer l'unité de conversion d'énergie tandis que les premier et second disjoncteurs sont ouverts, l'unité de commande délivre une commande pour fermer le second disjoncteur après avoir délivre une commande pour fermer le premier disjoncteur.
PCT/JP2013/059446 2013-03-29 2013-03-29 Système générateur d'énergie et procédé de commande de système générateur d'énergie WO2014155648A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2013/059446 WO2014155648A1 (fr) 2013-03-29 2013-03-29 Système générateur d'énergie et procédé de commande de système générateur d'énergie
JP2015507855A JP6101787B2 (ja) 2013-03-29 2013-03-29 発電システムおよび発電システムの制御方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/059446 WO2014155648A1 (fr) 2013-03-29 2013-03-29 Système générateur d'énergie et procédé de commande de système générateur d'énergie

Publications (1)

Publication Number Publication Date
WO2014155648A1 true WO2014155648A1 (fr) 2014-10-02

Family

ID=51622713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/059446 WO2014155648A1 (fr) 2013-03-29 2013-03-29 Système générateur d'énergie et procédé de commande de système générateur d'énergie

Country Status (2)

Country Link
JP (1) JP6101787B2 (fr)
WO (1) WO2014155648A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016096714A (ja) * 2014-10-31 2016-05-26 ゲーエー ジェンバッハー ゲーエムベーハー アンド コー オーゲー 発電プラント
US10637341B2 (en) 2016-07-22 2020-04-28 Mitsubishi Power Systems, Ltd. Two-shaft gas turbine power generating facility and control method for same
CN111564822A (zh) * 2020-05-21 2020-08-21 国家电网有限公司 发电机继电保护装置的跨域保护方法
WO2023218771A1 (fr) * 2022-05-09 2023-11-16 三菱パワー株式会社 Système de production d'énergie et procédé de commande
WO2023218776A1 (fr) * 2022-05-09 2023-11-16 三菱パワー株式会社 Système de génération d'énergie électrique et procédé de commande

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06261454A (ja) * 1993-03-09 1994-09-16 Hitachi Ltd 発電設備の始動装置
JPH06276688A (ja) * 1993-03-22 1994-09-30 Nishishiba Electric Co Ltd 誘導発電機による発電システム
JPH06288259A (ja) * 1993-04-02 1994-10-11 Toshiba Corp ガスタービン起動装置
JPH06327298A (ja) * 1993-05-13 1994-11-25 Ishikawajima Harima Heavy Ind Co Ltd 発電設備
JPH114597A (ja) * 1997-06-12 1999-01-06 Toshiba Corp 発電設備における静止形駆動装置の制御装置
JP2002089286A (ja) * 2000-09-13 2002-03-27 Mitsubishi Heavy Ind Ltd タービン発電装置
JP2007170391A (ja) * 2005-12-20 2007-07-05 General Electric Co <Ge> ガスタービンエンジン組立体
JP2008280860A (ja) * 2007-05-08 2008-11-20 Nishishiba Electric Co Ltd ガスタービン発電装置とその始動方法
JP2010065636A (ja) * 2008-09-12 2010-03-25 Hitachi Ltd ２軸式ガスタービン

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06261454A (ja) * 1993-03-09 1994-09-16 Hitachi Ltd 発電設備の始動装置
JPH06276688A (ja) * 1993-03-22 1994-09-30 Nishishiba Electric Co Ltd 誘導発電機による発電システム
JPH06288259A (ja) * 1993-04-02 1994-10-11 Toshiba Corp ガスタービン起動装置
JPH06327298A (ja) * 1993-05-13 1994-11-25 Ishikawajima Harima Heavy Ind Co Ltd 発電設備
JPH114597A (ja) * 1997-06-12 1999-01-06 Toshiba Corp 発電設備における静止形駆動装置の制御装置
JP2002089286A (ja) * 2000-09-13 2002-03-27 Mitsubishi Heavy Ind Ltd タービン発電装置
JP2007170391A (ja) * 2005-12-20 2007-07-05 General Electric Co <Ge> ガスタービンエンジン組立体
JP2008280860A (ja) * 2007-05-08 2008-11-20 Nishishiba Electric Co Ltd ガスタービン発電装置とその始動方法
JP2010065636A (ja) * 2008-09-12 2010-03-25 Hitachi Ltd ２軸式ガスタービン

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016096714A (ja) * 2014-10-31 2016-05-26 ゲーエー ジェンバッハー ゲーエムベーハー アンド コー オーゲー 発電プラント
US10637341B2 (en) 2016-07-22 2020-04-28 Mitsubishi Power Systems, Ltd. Two-shaft gas turbine power generating facility and control method for same
CN111564822A (zh) * 2020-05-21 2020-08-21 国家电网有限公司 发电机继电保护装置的跨域保护方法
CN111564822B (zh) * 2020-05-21 2022-08-23 国家电网有限公司 发电机继电保护装置的跨域保护方法
WO2023218771A1 (fr) * 2022-05-09 2023-11-16 三菱パワー株式会社 Système de production d'énergie et procédé de commande
WO2023218776A1 (fr) * 2022-05-09 2023-11-16 三菱パワー株式会社 Système de génération d'énergie électrique et procédé de commande

Also Published As

Publication number Publication date
JPWO2014155648A1 (ja) 2017-02-16
JP6101787B2 (ja) 2017-03-22

Similar Documents

Publication Publication Date Title
JP5340139B2 (ja) 廃熱回収式船舶推進システムの運転のための方法ならびに廃熱回収式船舶推進システム
JP6101787B2 (ja) 発電システムおよび発電システムの制御方法
EP2251953B1 (fr) Système de Genset avec stockage d&#39;énergie pour réponse transitoire
EP2778352B1 (fr) Systèmes et procédés de fonctionnement à vitesse variable de moteurs à combustion pour la production électrique
CA2809818C (fr) Procede de demarrage d&#39;une turbine a gaz avec convertisseur de frequence
JPH06261454A (ja) 発電設備の始動装置
JP5555442B2 (ja) 可変速度発電機を含むシステム及び方法
KR101543794B1 (ko) 발전기 시동 방법
JPH11122995A (ja) タービン発電機／電動機コントローラ
CN102420560B (zh) 变频交流起动发电系统励磁结构及交、直流励磁控制方法
US20090187326A1 (en) Electric motor for fuel pump with improved shutdown features
LeDoux et al. Starting large synchronous motors in weak power systems
CN104883107A (zh) 一种三级电励磁式同步电机动态起动控制方法
RU2112887C1 (ru) Газотурбинная установка и способ разгона газотурбинной установки
JP5822697B2 (ja) 発電システム及びその運転制御方法
JP6051293B2 (ja) 発電システム
US20180145620A1 (en) Systems and methods for providing grid stability
WO2019163236A1 (fr) Système générateur d&#39;électricité à moteur et son procédé de commande, et système de co-génération
RU2422977C1 (ru) Способ плавного пуска электродвигателя переменного тока
RU2419957C1 (ru) Электроэнергетическая установка
JP6073162B2 (ja) 発電システム、及び、その発電システムの運転方法
JP5537309B2 (ja) 発電システムの起動方法及びその起動装置
JPS6359798A (ja) 水車発電機
JP2024147467A (ja) 制御装置、及び発電システム
JP6730113B2 (ja) 制御装置および可変速発電電動機始動方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13880442

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2015507855

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13880442

Country of ref document: EP

Kind code of ref document: A1