CAJ | 학술논문

为满足并网规程的要求，提出一种逆变型分布式电源的低电压穿越运行控制策略。在此基础上，从逆变器控制器的动态响应特性出发，对逆变型分布式电源的故障电流特性进行研究。建立逆变型分布式电源在对称故障和不对称故障下短路电流的计算模型，并对含逆变型分布式电源的配电网故障分析理论和方法进行探讨和分析。数字仿真结果验证了理论分析结果的正确性。研究结果有助于提高逆变型分布式电源的故障穿越运行能力，并深化其故障特性分析，为分布式电源规模化接入后电网的继电保护原理研究和性能评估提供参考。
위만족병망규정적요구，제출일충역변형분포식전원적저전압천월운행공제책략。재차기출상，종역변기공제기적동태향응특성출발，대역변형분포식전원적고장전류특성진행연구。건립역변형분포식전원재대칭고장화불대칭고장하단로전류적계산모형，병대함역변형분포식전원적배전망고장분석이론화방법진행탐토화분석。수자방진결과험증료이론분석결과적정학성。연구결과유조우제고역변형분포식전원적고장천월운행능력，병심화기고장특성분석，위분포식전원규모화접입후전망적계전보호원리연구화성능평고제공삼고。
In order to meet the grid code of distributed generation, a control strategy for low voltage ride through (LVRT) of inverter interfaced distributed generation (IIDG) is proposed. Based on it, the dynamic responses of inverter controller and fault current characteristics of IIDG are studied under conditions of symmetric fault and asymmetric fault. Besides, the calculation model of the fault current of IIDG is established. Moreover, the fault analysis method for the distribution network with penetration of IIDGs is analyzed. Digital simulation results validate the correctness of the theoretical analysis results. The research results are helpful to improve the LVRT capability of IIDG and study the fault characteristics of the power grid with IIDGs. The research results can also provide reference for principle study and performance evaluation of the relaying protection which is applicable for the power gird with penetration of IIDGs.