CAJ | 학술논문

负荷突变情况下，含储能电源孤岛状态下的微电网为了满足快速功率分配，一般采用高下垂增益系数，针对高下垂增益系数影响微电网频率和电压稳定的问题，提出了一种改进的P／δ控制，引入了有功微分增益和无功积分增益系数，减轻了因负荷扰动导致的电压和频率瞬时突变，减小了对微电网造成的冲击，。为了实现二次调压和二次调频设计了二次调节器，提高了微电网孤岛情况下受到负荷扰动时的暂态稳定性，搭建了仿真模型和硬件实验平台验证所提控制策略的有效性。
부하돌변정황하，함저능전원고도상태하적미전망위료만족쾌속공솔분배，일반채용고하수증익계수，침대고하수증익계수영향미전망빈솔화전압은정적문제，제출료일충개진적P／δ공제，인입료유공미분증익화무공적분증익계수，감경료인부하우동도치적전압화빈솔순시돌변，감소료대미전망조성적충격，。위료실현이차조압화이차조빈설계료이차조절기，제고료미전망고도정황하수도부하우동시적잠태은정성，탑건료방진모형화경건실험평태험증소제공제책략적유효성。
Since microgrid is facing sudden load change , the islanded microgrid operates at a high droop gain coeffi-cient to meet the rapid power distribution .However there are contradictions between high droop gain coefficient and the regulation of frequency and the voltage stability .This paper puts forward an improved P/δdroop control which in-troduces the active differential gain and reactive integral gain coefficient .The strategy avoids the voltage and frequency mutations caused by load disturbance and reduces the impact on microgrid .In order to achieve the secondary voltage and frequency regulation ,the quadratic regulator is added to improve the stability of the transient state of the micro-grid.Simulation and experiments improve the validity of the proposed control strategy .