Voltage Feedforward Control Applicable to Multiple Static Synchronous Compensators in Parallel Connection
A static synchronous compensation, voltage feedforward technology, applied in reactive power adjustment/elimination/compensation, flexible AC transmission systems, harmonic reduction devices, etc., can solve resonance, limit the parallel operation of large-scale static synchronous compensators, cannot Operation and other problems, to achieve the effect of reducing pollution, wide adaptability, and good accuracy
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[0045] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0046] Such as figure 1 Shown is a flow chart of a voltage feedforward control method suitable for parallel connection of multiple static synchronous compensators of the present application;
[0047] Such as image 3 Shown is the control circuit diagram of the three-phase static synchronous compensator, where C dc and C DC side capacitor and filter capacitor, L 1and L 2 is the filter inductance, Z g Measure the impedance of the network; U ga , U gb , U gc Respectively, the three-phase voltage of the system, U pcc / ab and U pcc / bc is the compensation point line voltage, θ is the phase of the extracted compensation point voltage, I dref and I qref Respectively, the reactive current reference value and the active current reference value.
[0048] Such as Figure 4 Shown is the topology diagram of multiple static synchronous compensat...
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