Rail traction power supply system based on flywheel energy storage device and method for increasing power quality thereof
A flywheel energy storage and power supply system technology, applied in the direction of AC network load balancing, etc., can solve problems such as phase voltage balance and harmonic pollution of incapable traction transformers, and achieve the effects of improving operating efficiency, improving system power quality, and reducing investment.
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[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] see figure 1 , a railway traction power supply system based on a flywheel energy storage device, including the existing railway power distribution room, the equipment that needs to be added is: Step-down transformer, install fuses and circuit breakers on the high-voltage side of the step-down transformer. In the entire electrical circuit, the flywheel energy storage device is connected to the feeder bus a and b through a converter and a transformer. The system composed of the transformer and the converter converts the single-phase alternating current on the feeder bus into a direct current output to the flywheel energy storage The flywheel energy storage device implements its own control strategy by collecting the voltage and current of the converter system.
[0031] see figure 2 , the back-to-back converter system connects the two-port tra...
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