Electric energy quality controller for traction transformer station
A traction substation, power quality technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of system instability, high grid voltage, high cost, reduce total capacity, excellent compensation performance, eliminate The effect of negative sequence current
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[0034] The embodiment of the present invention provides a test prototype of a power quality controller, and its main technical indicators are: (1) The power supply voltage is 220V / 50Hz, and the short-circuit capacity is 770KVA. (2) The three-phase converter consists of a voltage type inverter with a capacity of 10kVA. The isolation transformer is a Scott transformer with a capacity of 3kVA. (3) In the test device, the capacity of the balance transformer is 3kVA, the three-phase line voltage on the primary side of the transformer is 220V, and the two-phase voltage on the secondary side is 110V respectively. The load is a diode rectified load filtered by a smoothing reactor, which can simulate a traction load.
[0035] Actual operation results and simulation results show that the power quality controller proposed by the present invention can effectively compensate the harmonics, reactive power and negative sequence current in the traction grid, and the filtering effect of the f...
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