摘要
随着电网中风电、光伏渗透率的逐渐提高,电网暂态电压稳定问题愈加严重,提出一种考虑暂态电压稳定的含高渗透率风光的电网动态无功规划方法。构造基于电压二元表的区域暂态电压安全裕度指标和无功规划基准场景;基于所提指标给出动态无功补偿装置的布点方法,建立差异化动态无功补偿优化模型,利用多目标灰狼优化算法求解配置容量,并采用改进的熵权逼近理想解距离法筛选出动态无功补偿装置的待配置方案;利用摄动法确定最终配置方案,确保所得规划方案适用于所有场景。改进的IEEE 39节点系统和实际电网的仿真结果验证了所提规划方法的普适性和合理性。
Along with the gradual increase of permeability of wind power and photovoltaic in power grid,the transient voltage stability problem of power grid becomes increasingly serious.A dynamic reactive power planning method for power grid with high permeability wind power and photovoltaic is proposed considering transient voltage stability.A regional transient voltage safety margin index based on voltage two-element notation and a benchmark scenario for reactive power planning are constructed.A layout method of dynamic reactive power compensation device is given based on the proposed index,an optimization model of differentiated dynamic reactive power compensation is established,the multi-objective grey wolf algorithm is used to solve the allocation capacity,and a technique for order preference by similarity to ideal solution method with improved entropy weight is adopted to screen out the scheme to be configured for dynamic reactive power compensation device.The perturbation method is used to determine the final configuration scheme,which ensures that the obtained planning scheme suitable to all scenarios.The simulative results of a modified IEEE 39-bus system and an actual power grid verify the universality and rationality of the proposed planning method.
作者
徐艳春
蒋伟俊
汪平
MI Lu
XU Yanchun;JIANG Weijun;WANG Ping;MI Lu(Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station,China Three Gorges University,Yichang 443002,China;Department of Electrical and Computer Engineering,Texas A&M University,College Station 77840,USA)
出处
《电力自动化设备》
EI
CSCD
北大核心
2022年第8期79-88,共10页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(51707102)。
关键词
高渗透率风光
暂态电压安全裕度指标
基准场景
差异化动态无功补偿
改进的熵权TOPSIS法
high permeability wind power and photovoltaic
transient voltage safety margin index
benchmark scenario
differentiated dynamic reactive power compensation
TOPSIS method with improved entropy weight
