集成可再生能源的电力系统继电保护参数动态计算方法研究  

Research on dynamic calculation method of relay protection parameters of power system with integrated renewable energy

作　　者：李辰 朱铭霞 赵宏大 Li Chen;Zhu Mingxia;Zhao Hongda(Economic and Technical Research Institute,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing210000,China)

机构地区：[1]国网江苏省电力有限公司经济技术研究院,江苏南京210000

出　　处：《能源与环保》2024年第12期241-247,258,共8页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国网江苏经研院2024年科技项目(B710EB237KR9)。

摘　　要：随着可再生能源和储能系统的集成,电力系统的运作模式正在经历重大变革。在紧急情况下,这种集成方式可能会影响系统运行条件的变化率和最低运行阈值,从而增加继电保护装置误动作的风险。为应对这一挑战,提出了一种基于HRTSim软件的数学建模方法。首先,通过构建任意规模、无简化和限制的电力系统模型,结合完整的继电保护模型,分析了可再生能源集成对电力系统中继电保护性能的影响;其次,讨论了电力系统、初级换能器和继电保护装置在各种正常与异常状态下的行为,并通过多样化的运行场景模拟,评估了继电保护的响应灵敏度与选择性;最后,分析了数学模拟过程中的误差边际,以提高模拟结果的精确度。实验结果表明,该方法能够有效确定在特定条件下确保继电保护正确动作所需的参数,为开发新的继电保护调整策略和工具提供了坚实的科学基础。所提出的方法不仅增强了继电保护的可靠性和适应性,也为电力系统的稳定运行提供了一种创新工具。With the integration of renewable energy and energy storage systems,the operation mode of electric power systems is undergoing significant transformation.In emergency situations,this integration method may affect the rate of change in system operating conditions and the minimum operating thresholds,thereby increasing the risk of relay protection device malfunctions.To address this challenge,a mathematical modeling method based on HRTSim software was proposed.Firstly,a model of the electric power system of any scale,without simplifications and restrictions was constructed,combining with a complete relay protection model,the impact of renewable energy integration on relay protection performance in the power system was analyzed.Secondly,the behavior of the power system,primary converters,and relay protection devices under various normal and abnormal conditions was discussed,and the response sensitivity and selectivity of relay protection through diverse operational scenario simulations were evaluated.Finally,the error margins in the mathematical simulation process to improve the accuracy of the simulation results was analyzed.Experimental results show that this method can effectively determine the parameters required to ensure correct relay protection operation under specific conditions,providing a solid scientific foundation for developing new relay protection adjustment strategies and tools.The proposed method not only enhances the reliability and adaptability of relay protection but also provides an innovative tool for the stable operation of power systems.

关 键 词：可再生能源 继电保护 储能系统 HRTSim软件 

分 类 号：TM774[电气工程—电力系统及自动化]