双馈异步发电机新等效(值)电路及其电力潮流定量分析计算

New Equivalent Circuit of Doubly Fed Induction Generator and Its quantitative Analysis and Calculation of Power Flow

双馈异步发电机常规型等效(值)电路上,可以确定其定子端口、定子支路和转子端口、转子支路的有功功率和无功功率;由于,其双馈异步发电机激磁支路没能分解为定子侧激磁支路和转子侧激磁支路,所以,其激磁支路定子侧发电机内电势、转子侧发电机内电势或电动机电势和相应的有功功率和无功功率,以及其相互定量关系,还不能准确定量分析计算出来。但是,通过双馈异步发电机新等效电路及其电力潮流定量分析计算,可以确定定子侧激磁支路发电机内电势、转子侧激磁支路发电机内电势或电动机电势和相应的有功功率和无功功率,以及其相互定量关系。双馈异步发电机新等效(值)电路分基本型和简化型。双馈异步发电机基本型等效(值)电路,可以无条件地部分分解其激磁支路;双馈异步发电机简化型等效(值)电路,在激磁电阻为零的条件下,也可以把其激磁支路完全分解为定子侧激磁支路和转子侧激磁支路。

On the conventional equivalent circuit of doubly fed induction generator,the active power and reactive power of its stator port,stator branch,rotor port and rotor branch can be determined;Since the excitation power of the stator branch and the rotor side of the generator is not quantitatively decomposed,the excitation potential of the stator branch and the rotor side of the generator can not be quantitatively calculated,so the excitation power of the stator branch and the rotor side can not be accurately calculated.However,through the new equivalent circuit of doubly fed asynchronyous generator and its quantitative analysis and calculation of power flow,the internal potential of stator side excitation branch generator,rotor side excitation branch generator or motor potential and corresponding active power and reactive power,as well as their quantitative relationship can be determined.The new equivalent circuit of doubly fed induction generator is divided into basic type and simplified type.The basic equivalent circuit of doubly fed induction generator can unconditionally partially decompose its excitation branch;For the simplified equivalent circuit of doubly fed induction generator,under the condition of zero excitation resistance,its excitation branch can also be completely divided into stator side excitation branch and rotor side excitation branch.