Parameter optimization method for backup power parallel reactor based on anti-typhoon running mode of wind power plant

Abstract

The invention relates to a parameter optimization method for a backup power parallel reactor based on an anti-typhoon running mode of a wind power plant. The method comprises the following steps: firstly, integrally modeling for the system under the anti-typhoon running mode, wherein the system model comprises a backup power supply, a backup power parallel reactor, a backup power transformer, a direct buried cable and a plurality of multi-path wind turbine generator equivalent models; respectively calculating power loss of system elements in the models; confirming the parameter of the reactor requiring parallel connection according to the system power factor before optimization and the realized power factor after optimization. The parameter optimization method for the backup power parallel reactor based on the anti-typhoon running mode of the wind power plant, provided by the invention, is used for optimizing the oversize capacity current into lower sensitive current and is beneficial to the closing operation of the circuit breaker.

Description

technical field [0001] The invention relates to a parameter configuration method of a wind farm, in particular to a parameter optimization method of a backup power shunt reactor based on the anti-typhoon operation mode of the wind farm. Background technique [0002] In the southeastern coastal areas where typhoons are frequent, most wind farms currently use backup power sources (lead-acid battery packs, diesel generator sets) to supply power to the wind farms when typhoons strike, making the yaw system of the wind turbines yaw. In offshore or coastal wind farms, most of the on-site power transmission and transformation use direct buried cables for power transmission. Compared with overhead lines, the positive sequence capacitance of cables is large, so the impedance of transmission lines is capacitive. Since the capacitor has the characteristics of "blocking direct current and traffic" (for AC circuits, it is equivalent to short circuit), there will be a large capacitive cu...

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Problems solved by technology

[0003] In order to overcome the shortage that the capacitive current of the standby power shunt reactor in the existing wind farm is too large in the anti-typhoon operation mode, which is not conducive to the closing operation of the circuit breaker, the present invention provides a method to optimize the capacitive current to be relatively large Small inductive current, which is beneficial to the closing operation of the circuit breaker, based on the parameter optimization method of the backup power shunt reactor in the anti-typhoon operation mode of the wind farm

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