有限台区信息下的分布式光伏逆变器协同调压策略  

Collaborative Voltage Regulation Strategy of Distributed Photovoltaic Inverter With Limited Distribution Area Information

作　　者：于海东 刘洋 李立生 张世栋 刘文彬 黄敏 张鹏平 YU Haidong;LIU Yang;LI Lisheng;ZHANG Shidong;LIU Wenbin;HUANG Min;ZHANG Pengping(State Grid Shandong Electric Power Research Institute,Jinan 250003,Shandong Province,China)

机构地区：[1]国网山东省电力公司电力科学研究院,山东省济南市250003

出　　处：《现代电力》2024年第3期593-600,共8页Modern Electric Power

基　　金：国网山东省电力公司科技项目资助(52062622000V)。

摘　　要：针对低压配电台区量测信息有限、计算资源不足的现实问题,提出一种基于实测灵敏度矩阵的光伏逆变器有功、无功协同调压策略。首先,通过调整光伏出力并观察记录节点电压变化,获取有功、无功调压灵敏度矩阵。然后,考虑逆变器容量约束、功率因数约束,在保证电压质量的前提下,以有功出力最大化、无功出力最小化为目标,提出多台光伏逆变器协同调压线性优化模型。最后,以某农村配电台区为例验证所提策略的有效性、控制精度以及计算速度。结果表明,该策略充分利用了逆变器无功调压能力,能够在精准控制台区电压水平的基础上有效减少弃光,同时求解速度较快,可适用于实际配电台区有限的计算资源。In allusion to the practical problems of limited measurement information and insufficient computing resources in low-voltage distribution area,a collaborative voltage regulation strategy for active power and reactive power of photovoltaic inverters was proposed based on voltage sensitivity matrices derived from actual measurement.Firstly,voltage sensitivity matrices of active power and reactive power regulation were obtained by adjusting the photovoltaic output and observing the node voltage shifting.Secondly,considering the capacity and power factor constraint of inverters,a linear optimization model for collaborative voltage regulation of multiple photovoltaic inverters was proposed to maximize the active output and minimize the reactive output under the premise of ensuring the voltage quality.Finally,a rural distribution area is selected as the study case to verify the effectiveness,control accuracy and calculation speed of the proposed strategy.The results show that by fully utilizing inverter’s reactive power regulation capacity,the proposed strategy can reduce the waste of photovoltaic energy on the basis of accurate voltage regulation of the distribution network with relatively fast solving speed,which make it feasible for limited computing resources in real distribution area.

关 键 词：配电网 分布式光伏 电压调节 功率调整 电压灵敏度 线性优化 

分 类 号：TM73[电气工程—电力系统及自动化]