Control method for wind generating set and wind generating set
The technology of a wind turbine generator set and a control method is applied in the control of wind turbines, the combination of wind turbines, the monitoring of wind turbines, etc., and can solve the problems of reducing power generation, shutdown of wind turbines, false triggering of high-voltage protection, etc., to ensure power generation. the effect of avoiding frequent downtime
Active Publication Date: 2019-10-22
CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP
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Problems solved by technology
At present, the high-voltage protection for the auxiliary power supply system of wind turbines is relatively simple. When encountering signal fluctuations in the voltage detection process, it is easy to cause false triggering of high-voltage protection, causing unnecessary shutdown of wind turbines and reducing power generation.
Method used
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[0033] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.
[0034] see figure 1 The wind turbine 100 shown in the present application, and figure 2 The control method of the wind power generating set of the present application is shown. The wind power generating set 100 of the present application includes a wind farm grid 10 , a transformer 20 , a power generation system 30 and an auxiliary power supply system 40 . The wind farm grid 10 is located at the end of the wind power generation unit 100 , the power generation system 30 is used to collect wind energy and convert it into electrical energy, and interact with the wind farm grid 10 for electrical energy. Both the wi...
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The invention provides a control method for a wind generating set and a wind generating set adopting the method. The wind generating set is connected with a wind farm power grid through a transformer.The control method comprises the steps that a voltage value is detected at an input end of an auxiliary power supply system in real time, and the voltage value detected in real time is matched with apreset power-off condition to be judged; and when the matching is judged successful, a main switch of the auxiliary power supply system is disconnected, so that the auxiliary power supply system is disconnected with a power generation system and the wind farm power grid. By detecting the voltage value at the input end of the auxiliary power supply system, the input voltage level of the auxiliarypower supply system can be known in real time, and then the judgement is carried out according to the input voltage level so as to more accurately control the voltage of the auxiliary power supply system, avoid frequent shutdown and ensure the power generation capacity of the wind generating set.
Description
technical field [0001] The invention relates to the field of new energy, in particular to a high-voltage protection control method for a wind power generating set, and a wind generating set adopting the control method. Background technique [0002] Wind turbines convert wind energy into electricity and transmit it to the wind farm grid. Since the wind farm grid is at the end of the grid, and the grid stability is poor, it is prone to overvoltage. At present, there are high-voltage ride-through standards, but high-voltage protection is mainly designed for power generation systems. The auxiliary power supply system parallel to the power generation system also needs to consider the impact of high-voltage breakdown to protect the safety of related equipment. At present, the high-voltage protection for the auxiliary power supply system of wind turbines is relatively simple. When encountering signal fluctuations in the voltage detection process, it is often easy to cause false tr...
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Login to View More IPC IPC(8): F03D17/00F03D9/25F03D9/11F03D7/04F03D80/00H02H3/20H02J3/38
CPCH02J3/386F03D17/00F03D9/255F03D9/11F03D7/048F03D80/00H02H3/20Y02E10/76Y02E10/72Y02E70/30
Inventor 何国华兰涌森杜炜杨微欧阳海黎张凯蔡梅园黄健胡海波
Owner CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP