A method for primary frequency modulation of wind farms based on supercapacitors and DC bus capacitors
A technology of DC bus capacitors and super capacitors, which is applied in wind power generation, electrical components, circuit devices, etc., can solve the problems of coordination and control without super capacitors and DC bus capacitors, and achieve primary frequency modulation, good primary frequency modulation, and resource saving. Effect
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[0021] Specific examples of the present invention are given below. The specific embodiments are only used to further describe the present invention in detail, and do not limit the protection scope of the claims of the present application.
[0022] The invention provides a method (abbreviation method) for realizing primary frequency modulation of a wind farm based on a supercapacitor and a DC bus capacitor, which is characterized in that it comprises the following steps:
[0023] Step 1, connect supercapacitors in parallel on the DC bus side of the wind farm;
[0024] Step 2. When the power system is running normally, the frequency is 49.5-50.2HZ, and there is no need for the wind farm to support the power system. At this time, the controller uses the power system frequency, output power and power system voltage as input to control On and off of the DC bus switch, connect the super capacitor, disconnect the traditional DC bus capacitor, use the super capacitor as the voltage r...
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