Voltage feed-forward control method suitable for parallel connection of a plurality of stationary synchronous compensators
A static synchronous compensation, voltage feedforward technology, applied in reactive power adjustment/elimination/compensation, flexible AC transmission systems, AC networks to reduce harmonics/ripples, etc. Problems such as parallel operation of static synchronous compensators
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[0046] The present invention will be described in detail below with reference to the drawings and specific embodiments.
[0047] Such as figure 1 Shown here is a flowchart of a voltage feedforward control method suitable for parallel connection of multiple static synchronous compensators in this application;
[0048] 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 1 And L 2 Is the filter inductance, Z g Measure impedance for the network; U ga , U gb , U gc Are the three-phase voltage of the system, U pcc / ab And U pcc / bc Is the compensation point line voltage, θ is the extracted compensation point voltage phase, I dref And I qref They are the reference value of reactive current and the reference value of active current.
[0049] Such as Figure 4 Shown is the topological structure diagram of the parallel system of multiple static synchronous compensators, where I...
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