CAJ | 학술논문

光伏并网逆变器对光伏发电系统的动态特性具有决定性作用，因此获得准确的光伏逆变器控制参数是分析光伏发电系统并网影响的基础。提出了一种针对典型光伏并网逆变器双环控制模型的dq 轴参数解耦辨识策略，并通过仿真算例比较了解耦模型在不同噪声水平下的辨识效果，分析了不同类型的扰动数据对辨识的影响规律，讨论了滤波电感参数有偏差时对辨识结果的影响，最后通过参数适用性检验算例验证了所提出辨识方法的有效性。
광복병망역변기대광복발전계통적동태특성구유결정성작용，인차획득준학적광복역변기공제삼수시분석광복발전계통병망영향적기출。제출료일충침대전형광복병망역변기쌍배공제모형적dq 축삼수해우변식책략，병통과방진산례비교료해우모형재불동조성수평하적변식효과，분석료불동류형적우동수거대변식적영향규률，토론료려파전감삼수유편차시대변식결과적영향，최후통과삼수괄용성검험산례험증료소제출변식방법적유효성。
The controller of grid-connected inverter plays a decisive role in the transient characteristics of the photovoltaic(PV) system.Therefore,the accuracy of the controller parameters is quite important in the analysis of PV system impact on the power system.This paper presents a dq axis decoupling parameter identification strategy for a typical PV inverter,which contains double loop control model.Furthermore,the parameter identification effects are compared,in terms of the impact of different levels of noise and different types of disturbances.In addition,the impact of the filter inductance error on the identification is discussed.Finally,the validity of the identification strategy is proved by case studies.