WO2022183743A1 - 牵引网高次谐波抑制方法及系统、轨道交通车辆 - Google Patents
牵引网高次谐波抑制方法及系统、轨道交通车辆 Download PDFInfo
- Publication number
- WO2022183743A1 WO2022183743A1 PCT/CN2021/125456 CN2021125456W WO2022183743A1 WO 2022183743 A1 WO2022183743 A1 WO 2022183743A1 CN 2021125456 W CN2021125456 W CN 2021125456W WO 2022183743 A1 WO2022183743 A1 WO 2022183743A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- quadrant
- characteristic frequency
- control
- control mode
- network voltage
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000001629 suppression Effects 0.000 title claims abstract description 14
- 230000002159 abnormal effect Effects 0.000 claims abstract description 20
- 238000004364 calculation method Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 10
- 238000004422 calculation algorithm Methods 0.000 claims description 4
- 230000003137 locomotive effect Effects 0.000 description 12
- 238000001228 spectrum Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 241000271559 Dromaiidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
Definitions
- the invention relates to the field of rail transit, in particular to a method and system for suppressing high-order harmonics of a traction network, and a rail transit vehicle.
- High frequency resonance accident may cause a series of serious consequences, such as ground traction substation protection action, locomotive control logic action, ground, on-board lightning arrester and other high-voltage equipment burning. Therefore, the research and application of the high-frequency resonance suppression method of the train network can avoid accidents caused by high-frequency resonance and help maintain the normal transportation order of the railway. There is no research on the suppression of high-order harmonics in the traction network in the prior art.
- the technical problem to be solved by the present invention is to provide a method and system for suppressing high-order harmonics of a traction network, a rail transit vehicle, and effectively suppress the high-order harmonics of the traction network, aiming at the deficiencies of the prior art.
- the technical scheme adopted in the present invention is: a method for suppressing high-order harmonics of a traction network, comprising the following steps:
- S1 collect the catenary network pressure in real time, and calculate the harmonic content of the network pressure
- the method of the invention can effectively detect the high-frequency resonance of the traction network, accurately determine the output operation mode according to the comparison result, reliably suppress the high-frequency resonance generated by the traction network, improve the system stability, and provide multiple guarantees for the reliable operation of the locomotive.
- step S1 the harmonic content and characteristic frequency of the network voltage are calculated by using the FFT algorithm.
- the calculation process is simple and the calculation speed is fast.
- step S3 includes:
- step 2 1) Judging whether the characteristic frequency of the current network voltage is within the characteristic frequency range of the first four-quadrant control mode, if so, then enter step 2); otherwise, control the four-quadrant converter to operate in the first four-quadrant control mode ;
- step 3 2) Determine whether the characteristic frequency of the current network voltage is within the characteristic frequency range of the second four-quadrant control mode, if so, enter step 3); otherwise, control the four-quadrant converter to operate in the second four-quadrant control mode ;
- step 4 Judging whether the characteristic frequency of the current network voltage is within the characteristic frequency range of the third or fourth quadrant control mode, if so, enter step 4); otherwise, control the four-quadrant converter to operate in the third and fourth quadrant control mode ;
- the present invention also provides a traction network high-order harmonic suppression system, including:
- the network pressure detection unit is used to collect the catenary network pressure in real time
- a detection and calculation unit for calculating the harmonic content and characteristic frequency of the network voltage
- the central control unit is used to send the abnormal network voltage signal and the characteristic frequency of the current network voltage to the traction control unit when the harmonic content is not less than the preset threshold value; the current network voltage characteristic frequency and the preset four-quadrant control compare the characteristic frequency of the mode, and when the characteristic frequency of the current network voltage is not within the preset characteristic frequency range of the four-quadrant control mode, a signal to unlock the four-quadrant pulse is sent to the traction control unit; When the preset characteristic frequency of the four-quadrant control mode is within the preset characteristic frequency range, compare the characteristic frequency of the current network voltage with the characteristic frequencies of the remaining four-quadrant control modes, until the characteristic frequency of the current network voltage exceeds the characteristic frequency of one of the remaining four-quadrant control modes. When setting the range, control the four-quadrant converter to operate in the four-quadrant control mode;
- the traction control unit is used to block the four-quadrant pulse and control the four-quadrant converter to stop running when receiving the abnormal signal of network voltage; and, when receiving the signal of unlocking the four-quadrant pulse, control the four-quadrant converter to The corresponding four-quadrant control mode runs.
- the specific implementation process for the traction control unit to control the four-quadrant converter to operate in a corresponding four-quadrant control mode includes:
- step 2 1) Judging whether the characteristic frequency of the current network voltage is within the characteristic frequency range of the first four-quadrant control mode, if so, then enter step 2); otherwise, control the four-quadrant converter to operate in the first four-quadrant control mode ;
- step 3 2) Determine whether the characteristic frequency of the current network voltage is within the characteristic frequency range of the second four-quadrant control mode, if so, enter step 3); otherwise, control the four-quadrant converter to operate in the second four-quadrant control mode ;
- step 4 Judging whether the characteristic frequency of the current network voltage is within the characteristic frequency range of the third or fourth quadrant control mode, if so, enter step 4); otherwise, control the four-quadrant converter to operate in the third and fourth quadrant control mode ;
- the detection and calculation unit uses the FFT algorithm to calculate the harmonic content and characteristic frequency of the network voltage.
- the detection and calculation unit is integrated in the central control unit, which saves space, is light in weight, small in volume, low in cost, and has strong practicability.
- the present invention also provides a rail transit vehicle, which adopts the above-mentioned traction network high-order harmonic suppression system.
- the present invention also provides a computer-readable storage medium on which computer programs/instructions are stored; when the computer programs/instructions are executed by a processor, the method for suppressing higher harmonics of the traction network of the present invention is implemented. step.
- the present invention also provides a computer program product, comprising a computer program/instruction; when the computer program/instruction is executed by a processor, the steps of the method for suppressing higher harmonics of the traction network of the present invention are implemented.
- the present invention has the following beneficial effects:
- the present invention can effectively detect the high-frequency resonance of the traction network by adding a detection and calculation unit and preset four-quadrant different operation control modes. According to the comparison results, the output operation mode is judged, the high-frequency resonance generated by the traction network is reliably suppressed, the system stability is improved, and multiple guarantees are provided for the reliable operation of the locomotive.
- the present invention is easy to modify the newly added unit in the existing way without requiring excessive hardware and space, and is light in weight, small in volume, low in cost and strong in practicability.
- Embodiment 1 is a schematic diagram of a method in Embodiment 1 of the present invention.
- FIG. 2 is a block diagram of the system structure of Embodiment 2 of the present invention.
- Embodiment 1 of the present invention introduces a new type of signal acquisition, calculation unit and control logic without changing the hardware architecture of the existing control system of the locomotive, so as to realize the suppression of the high frequency resonance of the traction network.
- Embodiment 2 of the present invention adds FFT (Fast fourier transformation, fast Fourier transform) calculation and detection between the catenary power supply voltage acquisition unit (ie the network voltage detection unit) and the CCU (center control unit) central control unit Unit (ie detection and calculation unit), FFT calculation and detection unit calculates the harmonic content and characteristic frequency of grid voltage in real time, and judges whether the harmonic content on the grid side exceeds the set threshold value (such as 18%) in real time, and the CCU central control unit (ie the central Control unit) presets a variety of four-quadrant control operation modes according to the locomotive line matching test.
- FFT Fast Fourier transform
- the FFT When the FFT detects that the harmonic content on the grid side exceeds the set threshold value, it sends the abnormal network voltage signal and the characteristic frequency of the current grid voltage to the CCU. After receiving the abnormal signal of the grid voltage, the CCU sends the abnormal grid voltage signal to the TCU in time, and the TCU ( Traction control unit) receives the abnormal signal of the network voltage and executes the blockade of the four-quadrant pulse and stops the operation of the four-quadrant.
- the CCU receives the abnormal signal of the grid voltage, it compares the characteristic frequency of the current grid voltage with the characteristic frequency range generated by the different four-quadrant control methods preset by the CCU, and determines the characteristic frequency range of the grid-side current generated during the operation of the locomotive.
- the four-quadrant control method that does not include the characteristic frequency of the current network voltage is sent to the TCU, and the TCU switches to the corresponding four-quadrant control mode to continue running.
- the FFT calculation and detection unit collects the catenary grid voltage in real time and performs FFT calculation to determine whether the total harmonic content of the extracted grid-side voltage exceeds the preset grid voltage THD (Total Harmonic Distortion, total harmonic distortion value) threshold. value. If the collected network voltage harmonic content exceeds a predetermined value (such as 18%), FFT triggers a network voltage abnormal signal at this time, and FFT immediately transmits the network voltage abnormal signal and the current network voltage characteristic frequency to the CCU central control unit.
- THD Total Harmonic Distortion, total harmonic distortion value
- the CCU After the CCU receives the abnormal signal of the network voltage, it sends the command of the abnormal signal of the network voltage to the TCU, and the TCU receives the abnormal signal of the network voltage to block the pulse of the four-quadrant converter and stop the operation of the four-quadrant converter.
- the CCU judges whether the received network voltage characteristic frequency exceeds the preset four-quadrant characteristic frequency spectrum range of different control modes, if the real-time network voltage characteristic frequency exceeds the first four-quadrant control mode characteristic frequency spectrum range, At this time, the CCU judges that the four-quadrant converter operates in the first four-quadrant control mode, and sends a pulse signal to unlock the four-quadrant converter to the TCU.
- the TCU After receiving the unlocked pulse signal, the TCU unlocks the four-quadrant converter pulse signal, allowing four The quadrant converter operates in the first four-quadrant control mode. If the real-time network voltage characteristic frequency is within the range of the first four-quadrant control mode, the CCU continues to compare the real-time network voltage characteristic frequency with the preset characteristic frequency spectrum of the second four-quadrant control mode. The characteristic spectrum range of the quadrant control mode. At this time, it is judged that the four-quadrant converter operates in the second four-quadrant control mode, and sends a pulse signal to the TCU to unlock the four-quadrant converter, and the TCU unlocks the four-quadrant converter after receiving the unlock pulse signal.
- the CCU compares the characteristic frequency value of the real-time network voltage with the preset characteristic frequency spectrum of the third and fourth-quadrant control mode. The characteristic spectrum range of the three-quadrant control mode. At this time, it is judged that the four-quadrant converter operates in the third-quadrant control mode, and sends a pulse signal to unlock the four-quadrant converter to the TCU. After receiving the unlocking pulse signal, the TCU unlocks the four-quadrant converter.
- the converter pulses allow the four-quadrant converter to operate in the third and fourth-quadrant control mode. If the characteristic frequency of the real-time network voltage is within the characteristic frequency range of the third and fourth quadrant control mode, the CCU compares the value of the characteristic frequency of the real-time network voltage with the preset characteristic frequency spectrum of the fourth and fourth quadrant control mode. The characteristic spectrum range of the four-quadrant control mode. At this time, it is judged that the four-quadrant converter operates in the fourth and four-quadrant control mode, and sends a pulse signal to unlock the four-quadrant converter to the TCU, and the TCU unlocks the four-quadrant converter after receiving the unlocking pulse signal. converter pulse, allowing the four-quadrant converter to operate in the fourth four-quadrant control mode. According to this judgment, until the four-quadrant operation control mode suitable for the current line is judged.
- the FFT sends the network voltage abnormal signal and characteristic frequency to the CCU.
- the CCU receives the abnormal network voltage signal, it outputs the command to control the TCU to block the pulse action of the four-quadrant converter.
- the CCU judges the received network voltage characteristic frequency and the equivalent switching frequency of the configured four-quadrant control method to determine whether the network voltage harmonic content exceeds the set value range of the characteristic frequency of the four-quadrant converter for different control methods.
- the CCU sends the current four-quadrant control mode operation command, and the TCU unlocks the four-quadrant converter pulse after receiving the CCU control command, and switches to the current four-quadrant operation control mode.
- the detailed architecture is shown in Figure 1 for the high-frequency resonance suppression process diagram, and the detailed control logic is shown in Figure 2 for the high-frequency resonance suppression control logic diagram.
- a four-quadrant control mode of the present invention is shown in Table 1.
Abstract
一种牵引网高次谐波抑制方法及系统、轨道交通车辆，实时采集接触网网压，计算所述网压的谐波含量及特征频率；若所述谐波含量不小于预设的门槛值，则判定网压异常，控制四象限变流器停止运行；判断当前网压的特征频率是否在某四象限控制方式特征频率预设范围内，若否，则控制所述四象限变流器以该四象限控制方式运行。
Description
本发明涉及轨道交通领域，特别是一种牵引网高次谐波抑制方法及系统、轨道交通车辆。
当前轨道交通领域电力机车和动车组主要采用交-直-交牵引电传动技术，牵引变压器将牵引网提供的高压单相交流电转换为合适的低压单相交流电，再通过四象限变流器(也称PWM变流器)转换为直流电，该直流电通过PWM逆变器转换成电压和频率可以调节的三相交流电，驱动牵引电机运行。网侧四象限变流器的采用，使得交流机车获得较高的功率因数和较低的网侧谐波电流，但是当四象限变流器投入运行在网侧产生的电流特征频谱与牵引网谐振频率重合时，容易引发牵引网高频谐振。高频谐振事故可能引起一系列严重后果，如地面牵引变电所保护动作、机车控制逻辑动作、地面、车上避雷器等高压设备烧损等。因此，车网高频谐振抑制方法的研究使用，可以避免高频谐振引起的事故，有助于维护铁路正常的运输秩序。现有技术没有针对牵引网高次谐波抑制的研究。
发明内容
本发明所要解决的技术问题是，针对现有技术不足，提供一种牵引网高次谐波抑制方法及系统、轨道交通车辆，有效抑制牵引网高次谐波。
为解决上述技术问题，本发明所采用的技术方案是：一种牵引网高次谐波抑制方法，包括以下步骤：
S1、实时采集接触网网压，计算所述网压的谐波含量；
S2、若所述谐波含量不小于预设的门槛值，则判定网压异常，控制四象限变流器停止运行；否则，输出当前网压的特征频率；
S3、判断当前网压的特征频率是否在某四象限控制方式特征频率预设范围内，若否，则控制所述四象限变流器以该四象限控制方式运行；若是，则将当前网压的特征频率与其余的四象限控制方式特征频率进行比较，直至当前网压的特征频率超出其余某一四象限控制方式特征频率预设范围时，控制所述四象限变流器以该四象限控制方式运行；若当前网压的特征频率在所有四象限控制方式特征频率预设范围内，则返回步骤S1。
本发明的方法能有效检测牵引网高频谐振，准确根据比对结果判断输出运行方式，可靠抑制牵引网产生的高频谐振，提高系统稳定性，为机车的可靠运行提供了多重保障。
步骤S1中，利用FFT算法计算所述网压的谐波含量及特征频率。计算过程简单，计算速度快。
步骤S3的具体实现过程包括：
1)判断当前网压的特征频率是否在第一四象限控制方式的特征频率范围内，若是，则进入步骤2)；否则，控制所述四象限变流器以该第一四象限控制方式运行；
2)判断当前网压的特征频率是否在第二四象限控制方式的特征频率范围内，若是，则进入步骤3)；否则，控制所述四象限变流器以该第二四象限控制方式运行；
3)判断当前网压的特征频率是否在第三四象限控制方式的特征频率范围内，若是，则进入步骤4)；否则，控制所述四象限变流器以该第三四象限控制方式运行；
4)判断当前网压的特征频率是否在第四四象限控制方式的特征频率范围内，若是，则返回S1；否则，控制所述四象限变流器以该第四四象限控制方式运行。
通过上述过程，在不改变传统大功率电力机车接触网供电工作模式主电路拓扑结构的基础上，预置四象限不同运行控制方式，进一步有效检测牵引网高频谐振。
相应地，本发明还提供了一种牵引网高次谐波抑制系统，包括：
网压检测单元，用于实时采集接触网网压；
检测计算单元，用于计算所述网压的谐波含量及特征频率；
中央控制单元，用于在谐波含量不小于预设的门槛值时，将网压异常信号和当前网压的特征频率发送至牵引控制单元；将当前网压特征频率与预设的四象限控制方式特征频率进行比较，并在当前网压特征频率不在所述预设的四象限控制方式特征频率范围内时，向牵引控制单元发出解锁四象限脉冲的信号；在当前网压特征频率在所述预设的四象限控制方式特征频率范围内时，将当前网压的特征频率与其余的四象限控制方式特征频率进行比较，直至当前网压的特征频率超出其余某一四象限控制方式特征频率预设范围时，控制所述四象限变流器以该四象限控制方式运行；
牵引控制单元，用于在收到网压异常信号时封锁四象限脉冲，控制四象限变流器停止运行；以及，在收到解锁四象限脉冲的信号时，控制所述四象限变流器以对应的四象限控制方式运行。
所述牵引控制单元控制所述四象限变流器以对应的四象限控制方式运行的具体实现过程包括：
1)判断当前网压的特征频率是否在第一四象限控制方式的特征频率范围内，若是，则进入步骤2)；否则，控制所述四象限变流器以该第一四象限控制方式运行；
2)判断当前网压的特征频率是否在第二四象限控制方式的特征频率范围内，若是，则进入步骤3)；否则，控制所述四象限变流器以该第二四象限控制方式运行；
3)判断当前网压的特征频率是否在第三四象限控制方式的特征频率范围内，若是，则进入步骤4)；否则，控制所述四象限变流器以该第三四象限控制方式运行；
4)判断当前网压的特征频率是否在第四四象限控制方式的特征频率范围内，若是，则返回S1；否则，控制所述四象限变流器以该第四四象限控制方式运行。
所述检测计算单元采用FFT算法计算所述网压的谐波含量及特征频率。
所述检测计算单元集成于所述中央控制单元内，节省空间，重量轻、体积小、成本低，实用性强。
本发明还提供了一种轨道交通车辆，其采用上述牵引网高次谐波抑制系统。
作为一个发明构思，本发明还提供了一种计算机可读存储介质，其上存储有计算机程序/指令；所述计算机程序/指令被处理器执行时实现本发明牵引网高次谐波抑制方法的步骤。
作为一个发明构思，本发明还提供了一种计算机程序产品，包括计算机程序/指令；该计算机程序/指令被处理器执行时实现本发明牵引网高次谐波抑制方法的步骤。
与现有技术相比，本发明所具有的有益效果为：
1、本发明在不改变传统大功率电力机车接触网供电工作模式主电路拓扑结构的基础上，通过增加检测计算单元以及预置四象限不同运行控制方式，能有效检测牵引网高频谐振，准确根据比对结果判断输出运行方式，可靠抑制牵引网产生的高频谐振，提高系统稳定性，为机车的可靠运行提供了多重保障。
2、本发明在不需要过多的硬件和空间情况下，易于在既有方式上修改新增的单元，重量轻、体积小、成本低，实用性强。
图1为本发明实施例1方法原理图；
图2为本发明实施例2系统结构框图。
如图1所示，本发明实施例1在不改变机车既有控制系统硬件架构的基础上，引入新型信号采集、计算单元及控制逻辑，实现牵引网高频谐振的抑制。
如图2所示，本发明实施例2在接触网供电电压采集单元(即网压检测单元)和CCU(center control unit)中央控制单元之间增加FFT(Fast fourier transformation，快速傅立 叶变换)计算检测单元(即检测计算单元)，FFT计算检测单元实时计算网压谐波含量及特征频率，并实时判断网侧谐波含量是否超过设定门槛值(如18％)，CCU中央控制单元(即中央控制单元)根据机车线路匹配试验预置多种四象限控制运行方式。当FFT检测到网侧谐波含量超过设定门槛值，将网压异常信号和当前网压的特征频率送给CCU，CCU收到网压异常信号后及时发送网压异常信号给TCU，TCU(Traction control unit，牵引控制单元)收到网压异常信号执行封锁四象限脉冲，停止四象限运行。CCU在接收到网压异常信号的同时，将当前网压特征频率与CCU预置的不同四象限控制方法产生的特征频率范围进行比对，判断出机车运行过程中产生的网侧电流特征频率范围不包含当前网压特征频率的四象限控制方法，再将比对出来的四象限控制方法送给TCU，TCU切换到相应的四象限控制方式继续运行。
机车投入运行时，FFT计算检测单元实时采集接触网网压并进行FFT计算，判断提取的网侧电压谐波总含量是否超过预设的网压THD(Total Harmonic Distortion，谐波总失真值)门槛值。若采集的网压谐波含量超出预定值(如18％)，此时FFT触发网压异常信号，FFT立即将网压异常信号与当前网压特征频率输送给CCU中央控制单元。CCU接收到网压异常信号后，发出网压异常信号的指令给TCU，TCU收到网压异常信号执行封锁四象限变流器脉冲，停止四象限变流器运行。CCU在接收到网压异常信号的同时，判断接收的网压特征频率是否超出预置的四象限不同控制方式特征频谱范围，若实时网压特征频率超出第一四象限控制方式特征频频谱范围，此时CCU判断四象限变流器以第一四象限控制方式运行，并给TCU发出解锁四象限变流器脉冲信号，TCU收到解锁的脉冲信号后解锁四象限变流器脉冲信号，允许四象限变流器按第一四象限控制方式运行。若实时网压特征频率在第一四象限控制方式范围内，CCU继续将实时网压特征频率与预置的第二四象限控制方式特征频谱范围进行比较，若实时网压特征频率超出第二四象限控制方式特征频谱范围，此时判断四象限变流器以第二四象限控制方式运行，并给TCU发出解锁四象限变流器脉冲信号，TCU收到解锁脉冲信号后解锁四象限变流器脉冲，允许四象限变流器按第二四象限控制方式运行。若实时网压特征频率在第二四象限控制方式特征频率范围内，CCU将实时网压特征频率值与预置的第三四象限控制方式特征频谱范围进行比较，若实时网压特征频率超出第三四象限控制方式特征频谱范围，此时判断四象限变流器以第三四象限控制方式运行，并给TCU发出解锁四象限变流器脉冲信号，TCU收到解锁脉冲信号后解锁四象限变流器脉冲，允许四象限变流器按第三四象限控制方式运行。若实时网压特征频率在第三四象限控制方式特征频率范围内， CCU将实时网压特征频率值与预置的第四四象限控制方式特征频谱范围进行比较，若实时网压特征频率超出第四四象限控制方式特征频谱范围，此时判断四象限变流器以第四四象限控制方式运行，并给TCU发出解锁四象限变流器脉冲信号，TCU收到解锁脉冲信号后解锁四象限变流器脉冲，允许四象限变流器按第四四象限控制方式运行。依此判断，直到判断出适合当前线路的四象限运行控制方式。
即：
1)实测网压计算得到的网压THD(谐波总失真)值低于预设的网压THD值时，牵引供电电压正常，机车维持正常运行。
2)实测网压计算得到的网压THD(谐波总失真)值达到或超过预设的网压THD值时，FFT发送网压异常信号和特征频率到CCU。CCU接收网压异常信号后，输出控制TCU封锁四象限变流器脉冲动作的命令。同时，CCU将接收的网压特征频率与已配置的四象限控制方法的等效开关频率进行判断，判断网压谐波含量是否超过四象限变流器不同控制方式特征频率设定值范围，若超过，则CCU发出当前四象限控制方式运行指令，TCU接收CCU控制命令后解锁四象限变流器脉冲，切换到当前四象限运行控制方式。详细架构见图1高频谐振抑制过程图，详细控制逻辑见图2高频谐振抑制控制逻辑图。
本发明的一种四象限控制方式见表1。
表1四象限控制方式下的特征频率范围
Claims (10)
- 一种牵引网高次谐波抑制方法，其特征在于，包括以下步骤：S1、实时采集接触网网压，计算所述网压的谐波含量；S2、若所述谐波含量不小于预设的门槛值，则判定网压异常，控制四象限变流器停止运行；否则，输出当前网压的特征频率；S3、判断当前网压的特征频率是否在某四象限控制方式特征频率预设范围内，若否，则控制所述四象限变流器以该四象限控制方式运行；若是，则将当前网压的特征频率与其余的四象限控制方式特征频率进行比较，直至当前网压的特征频率超出其余某一四象限控制方式特征频率预设范围时，控制所述四象限变流器以该四象限控制方式运行；若当前网压的特征频率在所有四象限控制方式特征频率预设范围内，则返回步骤S1。
- 根据权利要求1所述的牵引网高次谐波抑制方法，其特征在于，步骤S1中，利用FFT算法计算所述网压的谐波含量及特征频率。
- 根据权利要求1或2所述的牵引网高次谐波抑制方法，其特征在于，步骤S3的具体实现过程包括：1)判断当前网压的特征频率是否在第一四象限控制方式的特征频率范围内，若是，则进入步骤2)；否则，控制所述四象限变流器以该第一四象限控制方式运行；2)判断当前网压的特征频率是否在第二四象限控制方式的特征频率范围内，若是，则进入步骤3)；否则，控制所述四象限变流器以该第二四象限控制方式运行；3)判断当前网压的特征频率是否在第三四象限控制方式的特征频率范围内，若是，则进入步骤4)；否则，控制所述四象限变流器以该第三四象限控制方式运行；4)判断当前网压的特征频率是否在第四四象限控制方式的特征频率范围内，若是，则返回S1；否则，控制所述四象限变流器以该第四四象限控制方式运行。
- 一种牵引网高次谐波抑制系统，其特征在于，包括：网压检测单元，用于实时采集接触网网压；检测计算单元，用于计算所述网压的谐波含量及特征频率；中央控制单元，用于在谐波含量不小于预设的门槛值时，将网压异常信号和当前网压的特征频率发送至牵引控制单元；将当前网压特征频率与预设的四象限控制方式特征频率进行比较，并在当前网压特征频率不在所述预设的四象限控制方式特征频率范围内时，向牵引控制单元发出解锁四象限脉冲的信号；在当前网压特征频率在所述预设的四象限控制方式特征频率范围内时，将当前网压的特征频率与其余的四象限控制方式特征频率进行比较，直至当前网压的特征频率超出其余某一四象限控制方式特征频率预设范围时，控制所述四象限变流器以该四象限控制方式运行；牵引控制单元，用于在收到网压异常信号时封锁四象限脉冲，控制四象限变流器停止运行；以及，在收到解锁四象限脉冲的信号时，控制所述四象限变流器以对应的四象限控制方式运行。
- 根据权利要求4所述的牵引网高次谐波抑制系统，其特征在于，所述牵引控制单元控制所述四象限变流器以对应的四象限控制方式运行的具体实现过程包括：1)判断当前网压的特征频率是否在第一四象限控制方式的特征频率范围内，若是，则进入步骤2)；否则，控制所述四象限变流器以该第一四象限控制方式运行；2)判断当前网压的特征频率是否在第二四象限控制方式的特征频率范围内，若是，则进入步骤3)；否则，控制所述四象限变流器以该第二四象限控制方式运行；3)判断当前网压的特征频率是否在第三四象限控制方式的特征频率范围内，若是，则进入步骤4)；否则，控制所述四象限变流器以该第三四象限控制方式运行；4)判断当前网压的特征频率是否在第四四象限控制方式的特征频率范围内，若是，则返回S1；否则，控制所述四象限变流器以该第四四象限控制方式运行。
- 根据权利要求4所述的牵引网高次谐波抑制系统，其特征在于，所述检测计算单元采用FFT算法计算所述网压的谐波含量及特征频率。
- 根据权利要求4～6之一所述的牵引网高次谐波抑制系统，其特征在于，所述检测计算单元集成于所述中央控制单元内。
- 一种计算机可读存储介质，其上存储有计算机程序/指令；其特征在于，所述计算机程序/指令被处理器执行时实现权利要求1～3之一所述方法的步骤。
- 一种计算机程序产品，包括计算机程序/指令；其特征在于，该计算机程序/指令被处理器执行时实现权利要求1～3之一所述方法的步骤。
- 一种轨道交通车辆，其特征在于，其采用权利要求4～7之一所述的牵引网高次谐波抑制系统。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21928817.2A EP4300748A1 (en) | 2021-03-01 | 2021-10-22 | Traction network high harmonic suppression method and system, and rail transit vehicle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110223229.1A CN112886590B (zh) | 2021-03-01 | 2021-03-01 | 牵引网高次谐波抑制方法及系统、轨道交通车辆 |
| CN202110223229.1 | 2021-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022183743A1 true WO2022183743A1 (zh) | 2022-09-09 |
Family
ID=76054976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2021/125456 WO2022183743A1 (zh) | 2021-03-01 | 2021-10-22 | 牵引网高次谐波抑制方法及系统、轨道交通车辆 |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4300748A1 (zh) |
| CN (1) | CN112886590B (zh) |
| WO (1) | WO2022183743A1 (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112886590B (zh) * | 2021-03-01 | 2022-05-13 | 中车株洲电力机车有限公司 | 牵引网高次谐波抑制方法及系统、轨道交通车辆 |
| CN115149531A (zh) * | 2022-06-09 | 2022-10-04 | 株洲中车时代电气股份有限公司 | 一种适应牵引供电网的调节方法及系统 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276089A (zh) * | 2017-06-13 | 2017-10-20 | 湖南大学 | 电铁统一电能质量控制器的牵引网谐波谐振自动抑制方法 |
| CN107453349A (zh) * | 2017-06-21 | 2017-12-08 | 湖南华大紫光科技股份有限公司 | 一种电铁谐波谐振抑制装置及抑制方法 |
| CN111917096A (zh) * | 2019-06-13 | 2020-11-10 | 中车大同电力机车有限公司 | 机车受电弓控制系统和机车 |
| CN112886590A (zh) * | 2021-03-01 | 2021-06-01 | 中车株洲电力机车有限公司 | 牵引网高次谐波抑制方法及系统、轨道交通车辆 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5559712B2 (ja) * | 2011-01-18 | 2014-07-23 | 東芝三菱電機産業システム株式会社 | 高調波最適化システム |
| CN103293378B (zh) * | 2013-05-03 | 2015-08-19 | 西南交通大学 | 一种牵引供电系统谐波谐振频率的辨识方法 |
| CN106602582B (zh) * | 2017-01-26 | 2023-12-12 | 湖南铁道职业技术学院 | 基于自适应陷波器的牵引供电系统谐振抑制方法及装置 |
| CN107196542B (zh) * | 2017-06-05 | 2019-06-21 | 中车株洲电力机车研究所有限公司 | 一种特定谐波消除脉宽调制变模式控制方法及其装置 |
| CN107733275A (zh) * | 2017-11-08 | 2018-02-23 | 中车永济电机有限公司 | 机车牵引变流器的四象限整流器控制方法及装置 |
-
2021
- 2021-03-01 CN CN202110223229.1A patent/CN112886590B/zh active Active
- 2021-10-22 WO PCT/CN2021/125456 patent/WO2022183743A1/zh active Application Filing
- 2021-10-22 EP EP21928817.2A patent/EP4300748A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276089A (zh) * | 2017-06-13 | 2017-10-20 | 湖南大学 | 电铁统一电能质量控制器的牵引网谐波谐振自动抑制方法 |
| CN107453349A (zh) * | 2017-06-21 | 2017-12-08 | 湖南华大紫光科技股份有限公司 | 一种电铁谐波谐振抑制装置及抑制方法 |
| CN111917096A (zh) * | 2019-06-13 | 2020-11-10 | 中车大同电力机车有限公司 | 机车受电弓控制系统和机车 |
| CN112886590A (zh) * | 2021-03-01 | 2021-06-01 | 中车株洲电力机车有限公司 | 牵引网高次谐波抑制方法及系统、轨道交通车辆 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112886590A (zh) | 2021-06-01 |
| CN112886590B (zh) | 2022-05-13 |
| EP4300748A1 (en) | 2024-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022183743A1 (zh) | 牵引网高次谐波抑制方法及系统、轨道交通车辆 | |
| CN111193287B (zh) | 基于陷波器和比例谐振控制器的光伏并网控制方法及系统 | |
| CN110233490B (zh) | 避免连续换相失败的直流输电故障恢复控制方法及系统 | |
| WO2021248839A1 (zh) | 牵引变流器接地故障检测方法及装置 | |
| CN111740455B (zh) | 一种交流不平衡电压与直流脉动电压统一补偿的母线接口变换器控制方法 | |
| CN110703138B (zh) | 动车组牵引系统接地故障检测方法及装置 | |
| CN109449966B (zh) | 一种电池储能电站应对直流换相失败的控制方法 | |
| CN109955739B (zh) | 一种列车弓网离线穿越控制装置、系统及方法 | |
| Suarez et al. | Measurement of locomotive input admittance to analyse low frequency instability on AC rail networks | |
| CN110231793B (zh) | 一种直流融冰装置全功率试验控制方法 | |
| CN105576646A (zh) | 基于附加有功信号的vsc-mtdc系统平衡控制系统及其方法 | |
| CN112242796A (zh) | 机车牵引变流器网压波动复合检测控制装置及其控制方法 | |
| Zhang et al. | Research on power quality control method of V2G system of electric vehicle based on APF | |
| CN110474358A (zh) | 特高压直流分层接入方式下抑制连续换相失败的控制方法 | |
| CN108667309B (zh) | 用于有轨电车辅助变流系统的dc-dc控制方法 | |
| CN114374214B (zh) | 一种特高压混合直流输电系统暂态电压控制方法及装置 | |
| CN203339701U (zh) | 多目标降损装置 | |
| CN112098705A (zh) | 一种交直流供电制式快速辨识系统及方法 | |
| Yao et al. | The analysis and modeling of TCSC in the low-frequency oscillation suppression of electrified railway | |
| CN201682316U (zh) | 机车空调高频软开关不间断电源 | |
| Chin et al. | Design of Single-Tuned Harmonic Passive Filters for DC Electric Railway Traction Power Supply System | |
| CN111313455A (zh) | 储能型statcom抑制换相失败的控制方法及逆变器控制方法 | |
| CN111082448A (zh) | 双调谐滤波器控制方法、双调滤波器及直流输电系统 | |
| Wang et al. | Research on Train Secondary Pulsation Elimination Method | |
| Li et al. | Electric locomotive grounding detection circuit optimization |
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: 21928817 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2021928817 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2021928817 Country of ref document: EP Effective date: 20230929 |