摘要
分布式光伏大规模接入低压配电网将引起电压越限及反向重过载问题。光伏并网点具有灵活的有功、无功调节潜力,但目前相关研究多停留在理论分析及仿真验证层面,缺乏现场应用实践。首先分析光伏并网潮流特性,然后基于目前配电台区广泛应用的采集、计算设备,提出一种“云边端”协同的低压分布式光伏柔性调节体系架构,最后在某配电网台区开展现场测试,验证“云边端”协同架构的有效性,并综合分析光伏有功、无功调压效果。结果表明,控制指令可准确快速响应,电压越限、反向重过载治理效果明显。
The large-scale access of distributed photovoltaic to low-voltage distribution network will cause voltage violation and reverse heavy overload.Photovoltaic grid-connected points have the potential for flexible adjustment of active and reactive power.The related research is currently concentrated in theoretical analysis and simulation verification,mostly,however,by now,it is lack of practical application.First,power flow characteristics of photovoltaic grid-connected system are analyzed.Based on the acquisition and computing equipment widely used in the current distribution transformer district,a flexible regulation architecture of distributed photovoltage based on Cloud-Edge-End collaboration is proposed.Finally,field tests are carried out in a certain distribution transformer distric in order to verify the effectiveness of the Cloud-Edge-End collaborative architecture and comprehensively analyze the effect of photovoltaic active and reactive voltage regulation.The results demonstrate that the control command can achieve accurate and fast response,and the treatment effect on voltage violation and reverse heavy overload is obvious.
作者
刘洋
于海东
刘文彬
黄敏
LIU Yang;YU Haidong;LIU Wenbin;HUANG Min(State Grid Shandong Electric Power Research Institute,Jinan 250003,China)
出处
《山东电力技术》
2023年第7期23-29,共7页
Shandong Electric Power
基金
国网山东省电力公司科技项目“基于边端协同的配电台区状态综合管控技术研究及应用”(520626210017)。
关键词
分布式光伏
“云边端”协同
电压越限
反向重过载
无功调压
distributed photovoltaic generation
Cloud-Edge-End collaboration
distribution network voltage violation
reverse heavy overload
reactive power voltage regulation
