含高比例风电的送端电网两阶段式暂态电压安全预防控制  

Two-stage transient voltage safety prevention and control of sending-endpower grid with high-proportion of wind power

作　　者：何成明 万忠杨 单体华 梁永亮[2] HE Chengming;WAN Zhongyang;SHAN Tihua;LIANG Yongliang(State Grid Jibei Electric Economic Research Institute,Beijing 100038,China;School of Electrical Engineering,Shandong University,Jinan 250061,Shandong,China)

机构地区：[1]国网冀北电力有限公司经济技术研究院,北京100038 [2]山东大学电气工程学院,山东济南250061

出　　处：《山东大学学报(工学版)》2024年第6期121-129,共9页Journal of Shandong University(Engineering Science)

基　　金：国网冀北经研院2023年考虑灵活性需求的“双高”电力系统网源协同规划技术研究资助项目(B3018F23000B)。

摘　　要：为提升风电消纳能力和电压支撑能力,面向含高比例风电场的送端电网研究风机和储能协调的两阶段式暂态电压安全控制策略。第一阶段以储能和风机的功率控制代价最小为目标,构建电网稳态阶段潮流优化模型,运用内点法进行模型优化求解,确定最优稳态运行点;第二阶段考虑电网暂态电压安全约束,以偏离稳态优化后的潮流运行点程度最小为目标,建立暂态电压安全预防控制优化模型,应用灰狼优化算法求解,进行潮流运行点的优化校正。通过对修改后的Nordic含高比例风电场的送端电网进行仿真,验证所提两阶段式预防控制策略能够有效提高风电消纳能力和暂态电压安全预防控制水平。To improve wind power absorption capacity and voltage support capacity,a two-stage transient voltage safety control strategy for wind power and energy storage coordination was studied for the sending-end power system with high renewable penetration level.In the first stage,the power flow optimization model of the power grid in the steady state stage was constructed with the goal of minimizing the cost of energy storage and wind power control.The interior point method was used to optimize the model and determine the optimal steady state operating point.In the second stage,considering the safety constraints of power grid transient voltage,a transient voltage safety prevention and control optimization model was established to minimize the degree of power flow operating point after steady-state optimization,and grey wolf optimization algorithm was applied to solve the problem and optimize the power flow operating point.Through the simulation of the modified Nordic power grid with high proportion wind farms,the proposed two-stage preventive control strategy could effectively improve the system′s wind power absorption capacity and transient voltage safety preventive control level.

关 键 词：高比例风电场 储能 风电消纳 暂态电压安全 协调控制 

分 类 号：TM712[电气工程—电力系统及自动化]