JP2017192166A5 - - Google Patents
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- JP2017192166A5 JP2017192166A5 JP2016078724A JP2016078724A JP2017192166A5 JP 2017192166 A5 JP2017192166 A5 JP 2017192166A5 JP 2016078724 A JP2016078724 A JP 2016078724A JP 2016078724 A JP2016078724 A JP 2016078724A JP 2017192166 A5 JP2017192166 A5 JP 2017192166A5
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Claims (12)
前記電力変換部から出力される前記交流電力の出力周波数及び出力電圧を制御する交流電力制御部と、
前記交流電力の前記出力電圧を検出する電圧検出部と、
前記交流電力の出力電流を検出する電流検出部と、
を備え、
前記交流電力制御部は、
前記交流電力線に負荷が投入され、前記負荷に対して前記交流電力を定格周波数及び定格電圧で出力させた後、前記電圧検出部が検出した前記出力電圧及び前記電流検出部が検出した前記出力電流に基づき、前記交流電力の前記出力周波数及び前記出力電圧を、前記定格周波数及び前記定格電圧からそれぞれ低下させる垂下制御を実施し、前記出力周波数及び前記出力電圧を前記定格周波数及び前記定格電圧まで漸次修正する修正制御を実施し、
前記交流電力制御部は、
前記交流電力線に負荷が投入され、前記負荷に対して前記交流電力を前記定格周波数及び前記定格電圧で出力させた後、前記出力電圧及び前記出力電流に基づいて前記交流電力の拠出有効電力及び拠出無効電力を導出し、有効電力当たりの周波数低下量で規定される周波数垂下率及び前記拠出有効電力に基づいて、前記出力周波数を前記定格周波数から低下させる周波数垂下量を導出し、無効電力当たりの電圧低下量で規定される電圧垂下率及び前記拠出無効電力に基づいて、前記出力電圧を前記定格電圧から低下させる電圧垂下量を導出する垂下制御部と、
前記出力周波数を前記定格周波数まで修正する周波数修正値を導出し、前記周波数修正値に基づいて前記出力周波数を前記定格周波数まで漸次修正する過程における前記出力周波数を規定する周波数目標値を設定し、前記出力電圧を前記定格電圧まで修正する電圧修正値を導出し、前記電圧修正値に基づいて前記出力電圧を前記定格電圧まで漸次修正する過程における前記出力電圧を規定する電圧目標値を設定する修正制御部と、
前記垂下制御部が算出した前記周波数垂下量及び前記電圧垂下量に基づいて前記垂下制御を実施し、前記垂下制御の後、前記修正制御部が設定した前記周波数目標値及び前記電圧目標値に基づいて、前記出力周波数及び前記出力電圧を前記定格周波数及び前記定格電圧まで漸次修正する前記修正制御を実施する周波数電圧制御部と、
を備え、
前記垂下制御部は、
前記出力電圧及び前記出力電流に基づいて前記交流電力の前記拠出有効電力及び前記拠出無効電力を導出する電力演算部を備え、前記電力演算部により導出された前記拠出有効電力と前記周波数垂下率とを積算して前記周波数垂下量を導出し、前記電力演算部により導出された前記拠出無効電力と前記電圧垂下率とを積算して前記電圧垂下量を導出し、
前記修正制御部は、
前記電力演算部が導出した前記拠出有効電力及び前記拠出無効電力を監視する出力状況監視部と、予め設定された前記定格周波数、前記定格電圧、前記周波数垂下率及び前記電圧垂下率を格納するデータ格納部と、前記出力状況監視部が監視した前記拠出有効電力と、前記データ格納部に格納された前記周波数垂下率とを積算して前記周波数修正値を導出し、前記周波数修正値を周波数遅れ要素に入力し、前記周波数遅れ要素から出力される周波数漸次修正値に前記定格周波数を加算して得られた値を、前記出力周波数を前記定格周波数まで漸次修正する過程における前記出力周波数を規定する前記周波数目標値として設定し、前記出力状況監視部が監視した前記拠出無効電力と、前記データ格納部に格納された前記電圧垂下率とを積算して前記電圧修正値を導出し、前記電圧修正値を電圧遅れ要素に入力し、前記電圧遅れ要素から出力される電圧漸次修正値に前記定格電圧を加算して得られた値を、前記出力電圧を前記定格電圧まで漸次修正する過程における前記出力電圧を規定する前記電圧目標値として設定する指令値修正部と、を備え、
前記周波数電圧制御部は、
前記交流電力線に負荷が投入され、前記データ格納部に格納された前記定格周波数及び前記定格電圧を周波数指令値及び電圧指令値としてフィードバック制御部に入力し、前記フィードバック制御部が、入力された前記周波数指令値及び前記電圧指令値に基づいて、前記定格周波数及び前記定格電圧で前記交流電力を出力させた後、前記垂下制御部において導出された前記周波数垂下量に前記データ格納部に格納された前記定格周波数を加算して得られた値を前記周波数指令値として前記フィードバック制御部に入力し、前記垂下制御部において導出された前記電圧垂下量に前記データ格納部に格納された前記定格電圧を加算して得られた値を前記電圧指令値として前記フィードバック制御部に入力し、前記フィードバック制御部が、入力された前記周波数指令値及び前記電圧指令値に基づいて前記垂下制御を実施し、前記修正制御部の前記指令値修正部が設定した前記周波数目標値及び前記電圧目標値を前記周波数指令値及び前記電圧指令値として前記フィードバック制御部に入力し、前記フィードバック制御部が、入力された前記周波数指令値及び前記電圧指令値に基づいて、前記出力周波数及び前記出力電圧を前記定格周波数及び前記定格電圧まで漸次修正する前記修正制御を実施する、
電力変換装置。 A power converter that converts DC power input from a DC power source into AC power and outputs the AC power line; and
An AC power control unit that controls an output frequency and an output voltage of the AC power output from the power conversion unit;
A voltage detector for detecting the output voltage of the AC power;
A current detector for detecting an output current of the AC power;
With
The AC power control unit
A load is applied to the AC power line, and the AC power is output to the load at a rated frequency and a rated voltage, and then the output voltage detected by the voltage detector and the output current detected by the current detector. Based on the, the droop control to reduce the output frequency and the output voltage of the AC power from the rated frequency and the rated voltage, respectively, the output frequency and the output voltage gradually to the rated frequency and the rated voltage Implement corrective control to correct ,
The AC power control unit
A load is applied to the AC power line, and after the AC power is output to the load at the rated frequency and the rated voltage, the AC power is contributed to the effective power and the output based on the output voltage and the output current. Deriving reactive power, deriving a frequency droop amount that lowers the output frequency from the rated frequency based on the frequency droop rate defined by the frequency drop amount per active power and the contributing active power, and per reactive power A droop control unit that derives a voltage droop amount that lowers the output voltage from the rated voltage based on the voltage droop rate defined by the voltage drop amount and the contribution reactive power; and
Deriving a frequency correction value for correcting the output frequency to the rated frequency, and setting a frequency target value that defines the output frequency in the process of gradually correcting the output frequency to the rated frequency based on the frequency correction value, Deriving a voltage correction value for correcting the output voltage to the rated voltage, and setting a voltage target value that defines the output voltage in the process of gradually correcting the output voltage to the rated voltage based on the voltage correction value A control unit;
Based on the frequency droop amount calculated by the droop control unit and the voltage droop amount, the droop control is performed, and after the droop control, based on the frequency target value and the voltage target value set by the correction control unit. A frequency voltage control unit for performing the correction control for gradually correcting the output frequency and the output voltage to the rated frequency and the rated voltage;
With
The drooping control unit
A power calculation unit for deriving the contribution active power and the contribution reactive power of the AC power based on the output voltage and the output current, the contribution active power derived by the power calculation unit and the frequency droop rate; The frequency droop amount is derived by integrating the contribution reactive power derived by the power calculation unit and the voltage droop rate to derive the voltage droop amount,
The correction control unit
An output status monitoring unit that monitors the contribution active power and the contribution reactive power derived by the power calculation unit, and data that stores the preset rated frequency, the rated voltage, the frequency droop rate, and the voltage droop rate. The frequency correction value is derived by accumulating the contribution active power monitored by the storage unit, the output status monitoring unit, and the frequency droop rate stored in the data storage unit, and the frequency correction value is frequency-delayed. The value obtained by adding the rated frequency to the frequency gradual correction value output from the frequency lag element is input to the element, and the output frequency in the process of gradually correcting the output frequency to the rated frequency is defined. The frequency target value is set, and the contribution reactive power monitored by the output status monitoring unit and the voltage droop rate stored in the data storage unit are integrated. A voltage correction value is derived, the voltage correction value is input to a voltage delay element, and a value obtained by adding the rated voltage to the voltage gradual correction value output from the voltage delay element is expressed as the output voltage. A command value correction unit that sets the output voltage in the process of gradually correcting the rated voltage as the voltage target value,
The frequency voltage controller is
A load is applied to the AC power line, and the rated frequency and the rated voltage stored in the data storage unit are input to a feedback control unit as a frequency command value and a voltage command value, and the feedback control unit is input the Based on the frequency command value and the voltage command value, the AC power is output at the rated frequency and the rated voltage, and then stored in the data storage unit in the frequency droop amount derived in the droop control unit A value obtained by adding the rated frequencies is input to the feedback control unit as the frequency command value, and the rated voltage stored in the data storage unit is added to the voltage droop amount derived in the droop control unit. A value obtained by addition is input to the feedback control unit as the voltage command value, and the feedback control unit inputs the value. The drooping control is performed based on the frequency command value and the voltage command value, and the frequency target value and the voltage target value set by the command value correction unit of the correction control unit are set as the frequency command value and the voltage. A command value is input to the feedback control unit, and the feedback control unit gradually increases the output frequency and the output voltage to the rated frequency and the rated voltage based on the input frequency command value and the voltage command value. Performing the correction control to correct ,
Power conversion device.
複数の前記電力変換装置を並列運転させる場合に、
それぞれの前記電力変換装置において、前記垂下制御及び前記修正制御を実施する、
電力変換装置。 The power conversion device according to claim 1,
When operating a plurality of the power converters in parallel,
In each of the power converters, the drooping control and the correction control are performed.
Power conversion device.
複数の前記電力変換装置を並列運転させる場合に、
それぞれの前記電力変換装置において、前記垂下制御及び前記修正制御を実施する、
電力変換装置。 The power conversion device according to claim 1 ,
When operating a plurality of the power converters in parallel,
In each of the power converters, the drooping control and the correction control are performed.
Power conversion device.
複数の前記電力変換装置を並列運転させる場合に、
それぞれの前記電力変換装置において、前記垂下制御及び前記修正制御を実施する、
電力変換装置。 The power conversion device according to claim 1 ,
When operating a plurality of the power converters in parallel,
In each of the power converters, the drooping control and the correction control are performed.
Power conversion device.
前記直流電源が太陽電池パネルである、
電力変換装置。 It is a power converter device of any one of Claims 1-4 , Comprising:
The DC power source is a solar cell panel;
Power conversion device.
前記垂下制御部は、
前記出力電圧及び前記出力電流に基づいて前記交流電力の前記拠出有効電力及び前記拠出無効電力を導出する電力演算部を備え、前記電力演算部により導出された前記拠出有効電力と前記周波数垂下率とを積算して前記周波数垂下量を導出し、前記電力演算部により導出された前記拠出無効電力と前記電圧垂下率とを積算して前記電圧垂下量を導出し、
前記修正制御部は、
前記電力演算部が導出した前記拠出有効電力及び前記拠出無効電力を監視する出力状況監視部と、予め設定された前記定格周波数、前記定格電圧、前記周波数垂下率及び前記電圧垂下率を格納するデータ格納部と、前記修正制御における前記出力周波数及び前記出力電圧を規定する指令値修正部と、並列運転に係る他の前記電力変換装置とのデータの送受信を実施するネットワークインタフェイス部と、並列運転に係る他の前記電力変換装置と協調して前記修正制御を実施させる協調制御部と、を備え、前記指令値修正部が、前記出力状況監視部が監視した前記拠出有効電力と、前記データ格納部に格納された前記周波数垂下率とを積算して内部周波数修正値を導出し、前記ネットワークインタフェイス部が、他の前記電力変換装置が出力した他の前記電力変換装置の前記内部周波数修正値を受信し、前記協調制御部が、前記ネットワークインタフェイス部が受信した他の前記電力変換装置の前記内部周波数修正値を外部周波数修正値として外部周波数修正値格納部に格納し、前記外部周波数修正値格納部に格納された全ての前記外部周波数修正値を比較して最大の前記外部周波数修正値を最大外部周波数修正値として前記指令値修正部に出力し、前記指令値修正部が、前記内部周波数修正値及び前記最大外部周波数修正値のいずれか大きい値を前記周波数修正値として導出し、前記周波数修正値を周波数遅れ要素に入力し、前記周波数遅れ要素から出力される周波数漸次修正値に前記定格周波数を加算して得られた値を、前記出力周波数を前記定格周波数まで漸次修正する過程における前記出力周波数を規定する前記周波数目標値として設定し、前記指令値修正部が、前記出力状況監視部が監視した前記拠出無効電力と、前記データ格納部に格納された前記電圧垂下率とを積算して内部電圧修正値を導出し、前記ネットワークインタフェイス部が、他の前記電力変換装置が出力した他の前記電力変換装置の前記内部電圧修正値を受信し、前記協調制御部が、前記ネットワークインタフェイス部が受信した他の前記電力変換装置の前記内部電圧修正値を外部電圧修正値として外部電圧修正値格納部に格納し、前記外部電圧修正値格納部に格納された全ての前記外部電圧修正値を比較して最大の前記外部電圧修正値を最大外部電圧修正値として前記指令値修正部に出力し、前記指令値修正部が、前記内部電圧修正値及び前記最大外部電圧修正値のいずれか大きい値を前記電圧修正値として導出し、前記電圧修正値を電圧遅れ要素に入力し、前記電圧遅れ要素から出力される電圧漸次修正値に前記定格電圧を加算して得られた値を、前記出力電圧を前記定格電圧まで漸次修正する過程における前記出力電圧を規定する前記電圧目標値として設定し、
前記周波数電圧制御部は、
前記交流電力線に負荷が投入され、前記データ格納部に格納された前記定格周波数及び前記定格電圧を周波数指令値及び電圧指令値としてフィードバック制御部に入力し、前記フィードバック制御部が、入力された前記周波数指令値及び前記電圧指令値に基づいて、前記定格周波数及び前記定格電圧で前記交流電力を出力させた後、前記垂下制御部において導出された前記周波数垂下量に前記データ格納部に格納された前記定格周波数を加算して得られた値を前記周波数指令値として前記フィードバック制御部に入力し、前記垂下制御部において導出された前記電圧垂下量に前記データ格納部に格納された前記定格電圧を加算して得られた値を前記電圧指令値として前記フィードバック制御部に入力し、前記フィードバック制御部が、入力された前記周波数指令値及び前記電圧指令値に基づいて前記垂下制御を実施し、前記修正制御部の前記指令値修正部が設定した前記周波数目標値及び前記電圧目標値を前記周波数指令値及び前記電圧指令値として前記フィードバック制御部に入力し、前記フィードバック制御部が、入力された前記周波数指令値及び前記電圧指令値に基づいて、前記出力周波数及び前記出力電圧を前記定格周波数及び前記定格電圧まで漸次修正する前記修正制御を実施する、
電力変換装置。 The power conversion device according to claim 1 ,
The drooping control unit
A power calculation unit for deriving the contribution active power and the contribution reactive power of the AC power based on the output voltage and the output current, the contribution active power derived by the power calculation unit and the frequency droop rate; The frequency droop amount is derived by integrating the contribution reactive power derived by the power calculation unit and the voltage droop rate to derive the voltage droop amount,
The correction control unit
An output status monitoring unit that monitors the contribution active power and the contribution reactive power derived by the power calculation unit, and data that stores the preset rated frequency, the rated voltage, the frequency droop rate, and the voltage droop rate. A storage unit, a command value correction unit that defines the output frequency and the output voltage in the correction control, a network interface unit that performs transmission and reception of data with the other power conversion device related to parallel operation, and parallel operation A coordinated control unit that performs the correction control in cooperation with the other power conversion device according to the invention, wherein the command value correction unit monitors the contribution active power monitored by the output status monitoring unit, and the data storage The frequency droop rate stored in the unit is integrated to derive an internal frequency correction value, and the network interface unit outputs the other power conversion device. Receiving the internal frequency correction value of the other of said power converter, the cooperative control section, an external frequency the internal frequency correction value of the other of said power converter, wherein the network interface unit receives an external frequency correction value Store in the correction value storage unit, compare all the external frequency correction values stored in the external frequency correction value storage unit, and set the maximum external frequency correction value as the maximum external frequency correction value to the command value correction unit The command value correction unit derives a larger one of the internal frequency correction value and the maximum external frequency correction value as the frequency correction value, and inputs the frequency correction value to a frequency delay element, In the process of gradually correcting the output frequency to the rated frequency, the value obtained by adding the rated frequency to the frequency gradually corrected value output from the delay element The output frequency is set as the frequency target value, and the command value correcting unit monitors the contribution reactive power monitored by the output status monitoring unit and the voltage droop rate stored in the data storage unit. An internal voltage correction value is derived by integration, and the network interface unit receives the internal voltage correction value of the other power conversion device output by the other power conversion device, and the cooperative control unit, The internal voltage correction value of the other power conversion device received by the network interface unit is stored in the external voltage correction value storage unit as an external voltage correction value, and all the external voltages stored in the external voltage correction value storage unit are stored. Voltage correction values are compared, and the maximum external voltage correction value is output to the command value correction unit as the maximum external voltage correction value. The command value correction unit is configured to output the internal voltage correction value and the maximum voltage correction value. The larger one of the large external voltage correction values is derived as the voltage correction value, the voltage correction value is input to the voltage delay element, and the rated voltage is added to the voltage gradual correction value output from the voltage delay element. The value obtained in this manner is set as the voltage target value that defines the output voltage in the process of gradually correcting the output voltage to the rated voltage,
The frequency voltage controller is
A load is applied to the AC power line, and the rated frequency and the rated voltage stored in the data storage unit are input to a feedback control unit as a frequency command value and a voltage command value, and the feedback control unit is input the Based on the frequency command value and the voltage command value, the AC power is output at the rated frequency and the rated voltage, and then stored in the data storage unit in the frequency droop amount derived in the droop control unit A value obtained by adding the rated frequencies is input to the feedback control unit as the frequency command value, and the rated voltage stored in the data storage unit is added to the voltage droop amount derived in the droop control unit. A value obtained by addition is input to the feedback control unit as the voltage command value, and the feedback control unit inputs the value. The drooping control is performed based on the frequency command value and the voltage command value, and the frequency target value and the voltage target value set by the command value correction unit of the correction control unit are set as the frequency command value and the voltage. A command value is input to the feedback control unit, and the feedback control unit gradually increases the output frequency and the output voltage to the rated frequency and the rated voltage based on the input frequency command value and the voltage command value. Performing the correction control to correct,
Power conversion device.
前記指令値修正部は、前記周波数修正値を前記周波数遅れ要素に入力するか否かを選択する周波数修正スイッチング部と、
前記電圧修正値を前記電圧遅れ要素に入力するか否かを選択する電圧修正スイッチング部と、を備えている
電力変換装置。 The power conversion device according to claim 6 ,
The command value correction unit is a frequency correction switching unit that selects whether to input the frequency correction value to the frequency delay element;
And a voltage correction switching unit that selects whether or not to input the voltage correction value to the voltage delay element.
前記負荷に交流電力を供給する前記電力変換装置に対して別個の前記電力変換装置を並列運転させる際に、
前記別個の電力変換装置は、前記周波数修正スイッチング部及び前記電圧修正スイッチング部が非アクティブの状態で並列運転が開始され、
並列運転が開始されてから、前記周波数修正スイッチング部及び前記電圧修正スイッチング部がアクティブの状態にされる、
電力変換装置。 The power conversion device according to claim 7 ,
When operating the separate power converters in parallel with respect to the power converter that supplies AC power to the load,
The separate power conversion devices start parallel operation in a state where the frequency correction switching unit and the voltage correction switching unit are inactive,
After the parallel operation is started, the frequency correction switching unit and the voltage correction switching unit are activated.
Power conversion device.
複数の前記電力変換装置を並列運転させる場合に、それぞれの前記電力変換装置において、前記垂下制御及び前記修正制御を実施する、
電力変換装置。 The power conversion device according to claim 6 ,
When the plurality of power conversion devices are operated in parallel, the droop control and the correction control are performed in each of the power conversion devices.
Power conversion device.
複数の前記電力変換装置を並列運転させる場合に、それぞれの前記電力変換装置において、前記垂下制御及び前記修正制御を実施する、
電力変換装置。 The power conversion device according to claim 7 ,
When the plurality of power conversion devices are operated in parallel, the droop control and the correction control are performed in each of the power conversion devices.
Power conversion device.
複数の前記電力変換装置を並列運転させる場合に、それぞれの前記電力変換装置において、前記垂下制御及び前記修正制御を実施する、
電力変換装置。 The power conversion device according to claim 8 , wherein
When the plurality of power conversion devices are operated in parallel, the droop control and the correction control are performed in each of the power conversion devices.
Power conversion device.
前記直流電源が蓄電池である、
電力変換装置。 A power converter according to any one of claims 6-1 1,
The DC power source is a storage battery;
Power conversion device.
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| JP2016078724A JP6609506B2 (en) | 2016-04-11 | 2016-04-11 | Power converter |
| PCT/JP2017/006584 WO2017179306A1 (en) | 2016-04-11 | 2017-02-22 | Power conversion device |
| CN201780010117.XA CN108702103B (en) | 2016-04-11 | 2017-02-22 | Power conversion device |
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| JP2016078724A JP6609506B2 (en) | 2016-04-11 | 2016-04-11 | Power converter |
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| JP6877640B2 (en) * | 2018-05-15 | 2021-05-26 | 三菱電機株式会社 | Power converter and power conversion system |
| JP7351620B2 (en) * | 2019-02-01 | 2023-09-27 | 三菱重工エンジン＆ターボチャージャ株式会社 | Command generation device and command generation method in multiple generation power supply system |
| KR20200117152A (en) * | 2019-04-03 | 2020-10-14 | 엘에스일렉트릭(주) | Apparatus for controlling inverter |
| CN110838799A (en) * | 2019-09-27 | 2020-02-25 | 湖南沃森电气科技有限公司 | Inverter droop method for realizing uniform load under multi-drive transmission |
| CN110762794B (en) * | 2019-10-31 | 2021-07-20 | 广东美的制冷设备有限公司 | Power supply voltage determining method and device, compressor and air conditioner |
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| JP3679949B2 (en) * | 1999-06-29 | 2005-08-03 | 東芝トランスポートエンジニアリング株式会社 | Railway train power supply system |
| JP3778493B2 (en) * | 2001-09-28 | 2006-05-24 | デンヨー株式会社 | Inverter-controlled engine-driven generator |
| TWI415359B (en) * | 2011-09-16 | 2013-11-11 | Nat Univ Tsing Hua | A droop control system for grid-connected synchronization |
| EP2940826B1 (en) * | 2012-12-27 | 2018-01-31 | Kawasaki Jukogyo Kabushiki Kaisha | Combined power generation system having power converting device |
| CN103414207A (en) * | 2013-07-15 | 2013-11-27 | 中国科学院电工研究所 | Droop control-based smooth switching method |
| DE112014004589T5 (en) * | 2013-10-02 | 2016-08-18 | Murata Manufacturing Co., Ltd. | Power system |
| CN103956778A (en) * | 2014-04-16 | 2014-07-30 | 中国科学院广州能源研究所 | Micro-grid system and networking method based on phase angle droop control |
| CN104578144B (en) * | 2014-12-15 | 2017-01-18 | 浙江大学 | Anti-sagging control method for photovoltaic inverter in microgrid |
| CN105429170B (en) * | 2015-11-11 | 2018-01-26 | 中南大学 | A kind of microgrid inverter droop control method based on adjustable virtual impedance |
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