Power supply device for control system of wind driven generator
A technology for wind turbines and control systems, applied in wind energy generation, circuit devices, electrical components, etc., can solve problems such as failure to respond to operation commands and loss of control power for the fan control system
Inactive Publication Date: 2012-07-04
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology
While the current wiring method ( figure 1 ) is difficult to meet this requirement - when the circuit breaker on any side of the transformer is disconnected, the fan control system will lose control power, and then cannot respond to remote operation commands
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Embodiment Construction
[0014] Such as figure 2 In the PT loop auxiliary power supply wiring diagram of the wind generator control system power supply device shown, a PT coil 7 is installed at the front end of the high-voltage side switch 1 of the step-up transformer 2, and together with the UPS control power supply 6, it constitutes the backup power supply of the control loop. When the auxiliary transformer 5 fails to supply power normally for some reason, the circuit can still ensure the continuous operation of the fan control system.
[0015] Under normal circumstances, the switches on both sides of the step-up transformer 2 - the high-voltage side switch 1 and the low-voltage side switch 8, and the fan outlet switch 3 are all closed, and the fan operates normally to generate electricity. At this time, the control power supply, lighting power supply and auxiliary power supply of the blower fan are all provided by the auxiliary transformer 5;
[0016] When the step-up transformer 2 is out of oper...
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The invention relates to a power supply device for a control system of a wind driven generator. Electric energy generated by the wind driven generator is boosted by a booster transformer after passing through a gate out switch of the wind driven generator, and then is connected to a power grid after passing through a high-voltage side switch. An auxiliary transformer is arranged at the front end of the gate out switch of the wind driven generator, and provides control power for a fan. The control power is supplied to the control system through an uninterrupted power supply (UPS). The device further comprises a potential transformer (PT) coil. A winding of the PT coil is connected with the UPS at the front end of the high-voltage side switch of the booster transformer, and the UPS and the PT coil form a PT loop which serves as a standby control power supply loop. By the device, the shortcoming of loss of the control power of the conventional fan control system when the booster transformer fails or is maintained is overcome, the control system of the wind driven generator is ensured to work in a live state when the booster transformer is out of service, and the wind driven generator can be monitored.
Description
technical field [0001] The invention relates to an auxiliary power supply device, in particular to a device for providing auxiliary power supply to a control system of a wind power generator. Background technique [0002] Generally speaking, if figure 1 As shown in the wiring diagram of the wind power generation system, the electric energy generated by the wind power generator is raised to the required voltage level of the power grid through the step-up transformer 2 through the outlet switch 3 of the wind power generator, and then connected to the power grid through the high-voltage side switch 1 . There is an auxiliary transformer 5 at the front end of the outlet switch 3 of the wind power generator, and the UPS control power supply 6 provides control auxiliary power for the whole system through the auxiliary transformer 5 . [0003] The disadvantage of this solution is that when the step-up transformer cannot be energized for some reason (such as transformer maintenance,...
Claims
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IPC IPC(8): H02J9/04
CPCY02B10/72Y02E10/766Y02B10/70Y02E10/76
Inventor 涂轶昀
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER