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发明公开
CN107508317A 一种风电机组零过渡动态并网系统 无效 - 驳回

一种风电机组零过渡动态并网系统
摘要：
一种风电机组零过渡动态并网系统，它包括风电机组、整流器、逆变器、滤波器、并网断路器，并网断路器与零过动态并网电力电子开关模块并联，零过动态并网电力电子开关模块包括电力电子开关、零过渡动态并网控制系统、零过渡动态并网条件与有功方向检测单元、信号系统，零过渡动态并网条件与有功方向检测单元的数据口分别与零过渡动态并网控制系统、信号系统连接，零过渡动态并网控制系统的数据口还与电力电子开关连接，信号系统的数据输入口分别与并网断路器两侧连接，信号系统的数据输出口与逆变器连接。本发明主要是为了解决风电机组解列时，容易引起潮流倒送现象，并且在解列瞬间，还会引起系统侧电流震荡的技术问题。
摘要（英）：

The invention discloses a zero transition dynamic grid-connected system for a wind turbine generator set, and the system comprises a wind turbine generator, a rectifier, an inverter, a filter, and a grid-connected circuit breaker. The grid-connected circuit breaker is in parallel connection with a zero transition dynamic grid-connected power electronic switch module, and the zero transition dynamic grid-connected power electronic switch module comprises a power electronic switch, a zero transition dynamic grid-connected control system, a zero transition dynamic grid-connected condition and active power direction detection unit, and a signal system. A data port of the zero transition dynamic grid-connected condition and active power direction detection unit is connected with the zero transition dynamic grid-connected control system and the signal system. A data port of the zero transition dynamic grid-connected control system is also connected with the power electronic switch, and a data input port of the signal system is connected with two sides of the grid-connected circuit breaker. A data output port of the signal system is connected with the inverter. The system is mainly used for solving a problem of back flowing during the splitting of the wind turbine generator set, and a technical problem of system-side current oscillation at a splitting moment.

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