文章摘要
黄锐,兰洲,辛焕海,等.基于广义短路比的光伏多馈入系统容量优化方法[J].电力系统自动化,2019,43(3):147-154. DOI: 10.7500/AEPS20180120006.
HUANG Rui,LAN Zhou,XIN Huanhai, et al.Capacity Optimization Method for Multi-infeed Photovoltaic System Based on Generalized Short Circuit Ratio[J].Automation of Electric Power Systems,2019,43(3):147-154. DOI: 10.7500/AEPS20180120006.
基于广义短路比的光伏多馈入系统容量优化方法
Capacity Optimization Method for Multi-infeed Photovoltaic System Based on Generalized Short Circuit Ratio
DOI:10.7500/AEPS20180120006
关键词: 广义短路比  光伏多馈入系统  容量优化  灵敏度分析  等微增率准则
KeyWords: generalized short circuit ratio (gSCR)  multi-infeed photovoltaic system  capacity optimization  sensitivity analysis  equal incremental rate criterion
上网日期:2018-11-28
基金项目:国家重点研发计划资助项目(2017YFB0902000);国家自然科学基金资助项目(U1766206);国家电网公司科技项目(52110418000P)
作者单位E-mail
黄锐 浙江大学电气工程学院, 浙江省杭州市310027
 
 
兰洲 国网浙江省电力有限公司, 浙江省杭州市 310006  
辛焕海 浙江大学电气工程学院, 浙江省杭州市310027
 
xinhh@zju.edu.cn 
董炜 浙江大学电气工程学院, 浙江省杭州市310027
 
 
袁辉 浙江大学电气工程学院, 浙江省杭州市310027
 
 
摘要:
      广义短路比可用于描述电力电子多馈入系统小干扰稳定性,基于此指标研究了光伏发电(或场)多点馈入电网的总容量一定时,各点接入容量优化分配的问题,使光伏多馈入系统的小干扰稳定裕度最大。首先,建立了光伏多馈入系统的小干扰稳定分析模型;其次,利用广义短路比关于各馈入点光伏接入容量的灵敏度,提出了光伏多馈入系统的并网点容量优化方法;最后,以光伏三馈入系统为例,验证所提容量优化方法的可行性和有效性。仿真结果表明,合理分配多点接入时光伏的并网容量,能够有效提高系统的广义短路比和小干扰稳定裕度。
Abstract:
      Generalized short circuit ratio (gSCR) is able to characterize the small signal stability of multi-infeed system with power electronic devices. Based on the gSCR index, the allocation optimization problem of grid-connected capacity of each feeding point is investigated when the total grid-connected capacity of photovoltaic (PV) devices (or fields) is fixed to make the small signal stability margin of multi-infeed PV system maximized.Firstly, the small signal stability analysis model for multi-infeed PV system is established.Secondly, based on the sensitivity of gSCR to grid-connected PV capacity at each feeding point, a capacity optimization method for multi-infeed PV system is proposed. Finally, with three-infeed PV system as an calculation example, the feasibility and effectiveness of the proposed capacity optimization method are verified.The simulation results show that the reasonable distribution of grid-connected PV capacity accessed to multiple points can effectively enhance the gSCR of multi-infeed PV system and increase the small signal stability margin.
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