Compensation power ride-through type voltage transient generation device based on autotransformer

Abstract

The invention discloses a compensation power ride-through type voltage transient generation device based on an autotransformer. The device comprises a signal acquisition module, a main processor electrically connected with the signal acquisition module, a control module electrically connected with the main processor, a protection module electrically connected with the main processor, and a remoteman-machine interaction module electrically connected with the main processor. According to the compensation power ride-through type voltage transient change generation device based on the autotransformer, the operation loss and the heat productivity are reduced, the weight and the size are reduced, and voltage interruption in the gear shifting process is avoided.

Description

technical field [0001] The invention relates to the technical field of power devices, in particular to an autotransformer-based compensating power ride-through voltage transient generator. Background technique [0002] At present, there are four types of voltage transient generators based on amplifiers, switch impedances, inverters, or autovoltage regulators; amplifier-based voltage transient generators are mainly composed of power devices that work in the linear amplification region It has the characteristics of rich waveforms and good dynamic characteristics, but there are problems of high cost, high power consumption, and low power; the structure and control of the voltage transient generation device based on the switch impedance form are simple and easy to implement, but the energy loss is large , can not realize the two-way flow of energy; the voltage transient generator based on the inverter can simulate a variety of voltage faults, such as voltage sags and swells, har...

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Problems solved by technology

[0002] At present, there are four types of voltage transient generators based on amplifiers, switch impedances, inverters, or autovoltage regulators; amplifier-based voltage transient generators are mainly composed of power devices that work in the linear amplification region It has the characteristics of rich waveforms and good dynamic characteristics, but there are problems of high cost, high power consumption, and low power; the structure and control of the voltage transient generation device based on the switch impedance form are simple and easy to implement, but the energy loss is large , can not realize the two-way flow of energy; the voltage transient generator based on the inverter can simulate a variety of voltage faults, such as voltage sags and swells, harmonics, and three-phase asymmetrical operation, but because the output requires capacitor filtering, thus The rapidity of its voltage sag is affected; the full-power ride-through voltage transient generator based on autotransformer has the characteristics of general response speed, high efficiency, and bidirectional energy flow, and can realize voltage sag and transient at any time. The output of rising and irregular waveforms, but the loss is large, and the voltage is interrupted due to abnormal gear switching; and the full-power ride-through voltage transient generator based on the autotransformer is cost-effective, so it is widely used at present.

[0003] like figure 2 As shown, the current full-power ride-through voltage transient generator device based on autotransformer requires full power to pass through the autotransformer when it is working for compensation, resulting in relatively large loss, serious heat generation, and relatively large volume and weight of the device. A bad control strategy when switching is very likely to cause voltage interruption. If the gear switch is not selected properly, the corresponding speed will be reduced.

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