access icon openaccess Active power dynamic interval control based on operation data mining for wind farms to improve regulation performance in AGC

With the real-time changes of wind speed and operating conditions, it is a challenge to fully tap the active power regulation ability and improve the control performance of automatic generation control (AGC) in a wind farm (WF). The essence of tapping the active power regulation ability is to realise the coordination and complementarity of each wind turbine's (WT's) dynamic adjustment performance (DAP). To address this, a novel data mining method is developed to derive the internal relations between WTs’ output power and pitch angle, impeller speed and pitch angle during the power adjustment process, and a unified mechanism model is established to describe DAP of WTs. Based on the discovered relationship between WTs’ DAP and its operating states, an active power distribution algorithm and a dynamic interval control method are proposed. Then, an active power dynamic interval control strategy that has been implemented using Java script in MyEclipse for WFs is further developed. The control strategy has been tested and applied in a 50 MW WF in northwest China. The preliminary results showed that the control strategy has improved the rapidity and accuracy of AGC in the WF.

Inspec keywords: Java; data mining; wind turbines; power engineering computing; power generation control; impellers; wind power plants; control engineering computing; authoring languages; power distribution control

Other keywords: wind turbine; power 50.0 MW; dynamic adjustment performance; active power distribution; JavaScript; wind speed; impeller speed; power adjustment process; pitch angle; MyEclipse; wind farm; automatic generation control; active power regulation; AGC; active power dynamic interval control; operation data mining; regulation performance

Subjects: Control of electric power systems; Data handling techniques; Distribution networks; Wind power plants; Knowledge engineering techniques; Power engineering computing; Control engineering computing; Object-oriented programming; Power system control

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