초록 ▼

The invention relates to a method for the operation of a wind power plant (11) with a rotor (10) and a rotating apparatus (20, 22, 24) connected with the rotor (10), wherein a rotor speed (nR) and a rotating apparatus speed (n) are interrelated via a specifiable transmission ratio, wherein the rotat

The invention relates to a method for the operation of a wind power plant (11) with a rotor (10) and a rotating apparatus (20, 22, 24) connected with the rotor (10), wherein a rotor speed (nR) and a rotating apparatus speed (n) are interrelated via a specifiable transmission ratio, wherein the rotating apparatus speed (n) is determined, and wherein a rotational speed measurement value (rpmi) is captured for the determination of the rotating apparatus speed (n). The method according to the invention is characterized in that the rotational speed measurement value (rpmi) is corrected with an intermittently variable correction value (rpmi,c) so that the determined rotating apparatus speed (rpmi,f) results, and wherein the determined rotating apparatus speed (rpmi,f) is fed as the actual value into a regulation apparatus (36) of the wind power plant (11).

대표청구항 ▼

1. A method for operation of a wind power plant (11) with a rotor (10) and a rotating apparatus (20, 22, 24) connected with the rotor (10), wherein a rotor speed (nR) and a rotating apparatus speed (n) are interrelated via a specifiable transmission ratio, comprising steps of: determining the rotati

1. A method for operation of a wind power plant (11) with a rotor (10) and a rotating apparatus (20, 22, 24) connected with the rotor (10), wherein a rotor speed (nR) and a rotating apparatus speed (n) are interrelated via a specifiable transmission ratio, comprising steps of: determining the rotating apparatus speed (n), wherein for the determination of the rotating apparatus speed (n) a rotational speed measurement value (rpmi) is captured by a measurement device,correcting the rotational speed measurement value (rpmi) to eliminate a measurement error caused by inaccuracy of the measurement device with an intermittently variable correction value (rpmi,c), such that the determined rotating apparatus speed (rpmi,f) results, andfeeding the determined rotating apparatus speed (rpmi,f) to a regulation apparatus (36) of the wind power plant (11) as an actual value wherein a difference or a quotient of the rotational speed measurement value (rpmi) to a rotational speed measurement value average ( rpmi) is made for the determination of the correction value (rpmi,c) of the rotational speed measurement value (rpmi) wherein a rotational speed measurement value average ( rpmi) of the rotational speed measurement value (rpmi) captured during a revolution is formed for each full revolution of the rotating apparatus (20, 22, 24) wherein a fitting curve (46), is formed between two consecutive rotational speed measurement value averages ( rpmi, rpmi+1), wherein a difference or a quotient of the rotational speed measurement value (rpmi) to the fitting curve (46) is also formed for the determination of the correction value (rpmi,c) of the rotational speed measurement value (rpmi), and wherein the formed differences or quotients are filtered for the determination of the rotating apparatus speed (n, rpmi,f) of the rotating apparatus (20, 22, 24). 2. The method according to claim 1, wherein several rotational speed measurement values (rpmi) per revolution of the rotating apparatus (20, 22, 24) are captured and corrected with an at least intermittently variable correction value (rpmi,c). 3. The method according to claim 1, wherein the filtering step comprises a difference equation. 4. The method according to claim 1, wherein N rotational speed measurement values (rpmi) are captured for each full revolution of the rotating apparatus (20, 22, 24), wherein N is a natural number. 5. The method according to claim 1, wherein it is checked whether each capturable rotational speed measurement value (rpmi) is captured. 6. The method according to claim 5, wherein each captured rotational speed measurement value (rpmi) is continuously corrected. 7. The method according to claim 1, wherein the intermittently variable correction value (rpmi,c) is firmly set after a specifiable time (t), a specifiable number of revolutions (48, 49) or after falling below a specifiable upper limit of a variance of a first correction value (rpmi,c) of a revolution of the rotating apparatus (20, 22, 24) to the first correction value (rpmi,c) of a next revolution of the rotating apparatus (20, 22, 24). 8. The method according to claim 1, wherein an infeed of the determined rotating apparatus speed (rpmi,f) as the actual value occurs to a regulation apparatus (36) of the wind power plant (11) for setting of the rotor blade adjustment angle υi or for setting of electrical parameters of an electrical system (38) of the wind power plant (11), the parameters including at least one of: power, torque and phase of the alternating voltage. 9. The method according to claim 1, wherein the rotating apparatus speed (n,rpmi,f) is limited when a specifiable rotational speed range, which is adjustable during operation, is exceeded or fallen short of. 10. The method according to claim 1, wherein when a specifiable difference is exceeded between two consecutive rotational speed measurement values (rpmi) or two consecutive rotational speed measurement value averages ( rpmi), a last rotational speed measurement value (rpmi) or rotational speed measurement value average ( rpmi) is ignored. 11. The method according to claim 1, wherein when an amount of the difference of the rotational speed measurement value (rpmi) to a rotational speed measurement value average ( rpmi) exceeds a specifiable value, the correction value (rpmi,c) is limited to a specifiable maximum value. 12. The method according to claim 9, wherein an error message is triggered when the rotating apparatus speed (n,rpmi,f) is limited. 13. The method according to claim 1, wherein the fitting curve (46) is a best fit straight line.