高比例光伏接入的电力系统暂态过电压控制策略  

TRANSIENT OVERVOLTAGE CONTROL STRATEGY OF POWER SYSTEM CONSIDERING HIGH PROPORTION PHOTOVOLTAIC ACCESS

作　　者：王蒙 张文朝 汪莹 柳顺楠 王聪 崔曦文 Wang Meng;Zhang Wenchao;Wang Ying;Liu Shunnan;Wang Cong;Cui Xiwen(Northwest Branch of State Grid Corporation of China,Xi’an 710048,China;Beijing Kedong Electric Power Control System Co.,Ltd.,Beijing 100089,China)

机构地区：[1]国家电网公司西北分部,西安710048 [2]北京科东电力控制系统有限责任公司,北京100089

出　　处：《太阳能学报》2023年第10期148-155,共8页Acta Energiae Solaris Sinica

摘　　要：为确保高比例光伏接入的电力系统安全稳定运行,提出一种“整流站-光伏电站”暂态过电压分层控制策略。首先,对高比例光伏直流外送系统送端电网暂态过电压原理进行分析,建立“整流站-光伏电站”暂态过电压分层控制模型。然后,结合联合调用法和一致性算法对控制模型进行求解,通过整流站调相机参数优化控制和光伏逆变器无功回退分配控制对暂态过电压进行抑制。最后,以中国西北地区某高比例光伏电网为例,建立高比例光伏接入的直流外送系统实验仿真模型。算例结果分析表明,所提出的暂态过电压分层控制策略显著增强了系统的电压调节能力,提升了系统运行的可靠性。The paper proposes a"rectifier station-photovoltaic power station"transient overvoltage hierarchical control strategy.Firstly,the principle of transient overvoltage at the sending end of the high-proportion photovoltaic DC transmission system is analyzed,and a layered control model of transient overvoltage of"rectifier station-photovoltaic power station"is established.Then,combined with the joint calling method and the consistency algorithm,the control model is solved,and the transient overvoltage is suppressed through the optimization control of the rectifier station camera parameters and the reactive power back-off distribution control of the photovoltaic inverter.Finally,taking a high-proportion photovoltaic power grid in Northwest of our country as an example,an experimental simulation model of a DC transmission system with high-proportion photovoltaic access is established.The example analysis results show that the transient overvoltage hierarchical control strategy proposed in this paper massively enhances the regulation capability of the power system.

关 键 词：光伏发电 高压直流输电 分层控制系统 暂态过电压保护 

分 类 号：TM73[电气工程—电力系统及自动化]