光伏驱动新能源同步机并网的调频能力研究  

Research on Frequency Regulation Capability of Photovoltaic Integration via a Motor-Generator Pair

作　　者：付文启 黄永章[1,2] 杨鑫 管飞[1] 谷昱君 FU Wenqi;HUANG Yongzhang;YANG Xin;GUAN Fei;GU Yujun(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;NCEPU(Yantai)Power Semiconductor Technology Research Institute Co.,Ltd.,Yantai 264000,Shandong,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]华电(烟台)功率半导体技术研究院有限公司,山东烟台264000

出　　处：《电气传动》2022年第10期21-27,共7页Electric Drive

基　　金：贵州电网公司科技项目(067600KK52180007)。

摘　　要：大规模新能源机组并网降低了电力系统的惯性,新能源同步机(MGP)能为新能源电网提供真实的、无延时的惯性响应。从MGP并网系统结构出发,建立了MGP的电气-机械模型,对比了MGP与虚拟惯量控制的惯性响应原理。通过类比传统机组与新能源同步机在频率响应上的异同点,提出了基于光伏减载运行和下垂控制相结合的有功控制策略。在3机9节点仿真系统中验证了MGP的惯性响应能力和改进控制策略的有效性,进而通过与虚拟惯量和下垂控制策略的对比,验证了所提出策略对于光伏调频能力的提升作用。实验结果表明,改进控制策略能增强光伏经MGP并网的频率响应能力。The integration of large-scale renewable energy source causes the reduction of rotational inertia in power systems.A motor-generator pair(MGP)can provide a real inertial response(IR)capability without delay for renewable energy generations.The electrical-mechanical model of the MGP was established based on the grid connection structure of the MGP system,and the inertial response principle between MGP system and virtual inertia control was compared.Referring to the similarities and differences on frequency response between traditional synchronous generators and MGP,a modified active power control strategy based on the combination of photovoltaic(PV)de-loading operation and droop control was proposed.The inertial response capability of the MGP and the improved control strategy were verified in the three machines and nine nodes simulation system.Furthermore,the promotion effect of the improved control strategy on frequency regulation ability was verified by comparing the virtual inertia with the droop control strategy.The experimental results show that the improved control strategy can enhance the frequency support capability of the PV integration via anMGP.

关 键 词：光伏发电 新能源同步机 惯性 下垂控制 一次调频 

分 类 号：TM341[电气工程—电机]