METHOD FOR BRAKING STATE MONITORING AND WIND ENERGY INSTALLATION FOR CARRYING OUT THE METHOD
A method for determining the state of a braking apparatus of a wind energy installation can include obtaining data relating to load behavior of the braking apparatus, recording a measured value during a time period between a start of a braking process and an end of the braking process, and determining a brake state characteristic value based on the data and the measured value. A wind energy installation for performing the method can include a braking apparatus, a sensor, a control unit configured to instruct the sensor to record a measured value in a time period between a start of a braking process and an end of a braking process, a data memory configured to store data relating to load behavior of the braking apparatus, and a computation module configured to determine a brake state characteristic value based on the data and the measured value.
1 . A method for monitoring the state of a braking apparatus of a wind energy installation, comprising:
monitoring a braking apparatus;
obtaining data relating to load behavior of the braking apparatus;
recording a measured value during a time period between a start of a braking process and an end of the braking process; and
determining a brake state characteristic value based on the data and the measured value.
2 . The method of claim 1 , wherein the measured value comprises a measure for braking travel of the braking apparatus.
3 . The method of claim 1 , wherein the measured value comprises a measure for a difference between a rotation speed at the start of the braking process and a rotation speed at the end of the braking process.
4 . The method of claim 1 , wherein the measured value comprises a measure for a duration of the braking process.
5 . The method of claim 1 , wherein the measured value is recorded independently of the monitoring of the braking apparatus using a sensor included in the wind energy installation.
6 . The method of claim 1 , wherein the brake state characteristic value is determined after the end of the braking process.
7 . The method of claim 1 , further comprising determining a brake cooling time (T B ) based on the brake state characteristic value.
8 . The method of claim 1 , further comprising determining a wear characteristic value (V K ) from based on the brake state characteristic value.
9 . A wind energy installation comprising:
a braking apparatus;
a sensor;
a control unit configured to instruct the sensor to record a measured value in a time period between a start of a braking process and an end of a braking process;
a data memory configured to store data relating to load behavior of the braking apparatus; and
a computation module configured to determine a brake state characteristic value based on the data and the measured value.
10 . The wind energy installation of claim 9 , wherein the computation module is configured to calculate a brake cooling time (T B ) based on the brake state characteristic value.
11 . The wind energy installation of claim 9 , wherein the computation module is configured to calculate a wear characteristic value (V K ) based on the brake state characteristic value.
12 . The wind energy installation of claim 9 , wherein the control unit is configured to process measured values recorded using the sensor to determine a suitable operating point for the wind energy installation.