CAJ | 학술논문

为了分析光伏电站接入孤立电网的可靠性和稳定性,开发了基于 PSASP 的光伏电站仿真模型及其储能系统控制策略.利用 PSASP 的用户自定义模型(UDM),设计了完整的适于工程应用的光伏阵列模型、逆变器装置模型、MPPT 控制模型以及蓄电池储能装置模型.分析了储能系统的工作原理,确定了蓄电池储能系统的容量配置方法和并网控制策略,并对实际孤立电网进行了仿真分析.仿真结果表明,在发生光照强度变化和三相短路故障的情况下,蓄电池储能系统能够维持电网的功率平衡以及并网点的电压水平,减小故障后的系统振荡,确保了孤立电网的稳定性,证明了该系统及其控制策略稳定可靠.
위료분석광복전참접입고립전망적가고성화은정성,개발료기우 PSASP 적광복전참방진모형급기저능계통공제책략.이용 PSASP 적용호자정의모형(UDM),설계료완정적괄우공정응용적광복진렬모형、역변기장치모형、MPPT 공제모형이급축전지저능장치모형.분석료저능계통적공작원리,학정료축전지저능계통적용량배치방법화병망공제책략,병대실제고립전망진행료방진분석.방진결과표명,재발생광조강도변화화삼상단로고장적정황하,축전지저능계통능구유지전망적공솔평형이급병망점적전압수평,감소고장후적계통진탕,학보료고립전망적은정성,증명료해계통급기공제책략은정가고.
A simulation model of photovoltaic (PV) station and a control strategy of energy storage system are developed in order to analyze the reliability and stability of isolated grid with photovoltaic (PV) station connected. Using the User Defined Model (UDM) based on PSASP, the photovoltaic array model, inverter model, MPPT controller model and storage battery system model are designed, which can be suitable for engineering application. The operation principle of energy storage system is analyzed. The capacity allocation method and grid-connected control strategy of storage battery system are determined. Simulation analysis results based on a practical isolated grid indicate that the battery energy storage system is capable of maintaining grid power balance and a constant voltage, reducing the oscillation of the system after faults, ensuring the stability of the isolated grid, when the change of the sunshine intensity and three-phase short-circuit fault happen respectively. The system and its control strategies are proved stable and reliable.