摘要
传统采用退火—逐步优化算法对电力系统中的电容器,进行多形态高载荷负荷协调时,未综合考虑谐波影响下电容器的负荷状态,无法对总谐波畸变进行有效控制,降损效果差;因此提出新的谐波影响下电力电容器的协调无功降损方法,通过谐振影响下的电力电容器优化配置数学模型,综合考虑谐波影响下电力电容器电能消耗总金额和配置电容器所需的费用,获取谐波影响下电容器的电压总谐波畸变率;通过微粒群优化算法,确保各节点电压总谐波畸变率控制在规定限值以内,对电容器进行优化配置,实现电容器的无功降损控制。实验结果说明,采用所提方法优化配置后的电容器可有效抑制谐振发生,可降低约37%的电网损耗,具有节能高的优势。
When the traditional annealing-stepwise optimi⁃zation algorithm is used to coordinate the capacitors in power sys⁃tem,because the load state of the capacitors under the influence of harmonics is not considered,the total harmonic distortion can not be effectively controlled,and the effect of loss reduction is poor.To this end,a new coordinated reactive power reduction method for power capacitors under the influence of harmonics is proposed.Through the optimal mathematical model of power ca⁃pacitors under the influence of resonance,and comprehensively considering the total amount of power consumption and the cost of capacitors under the influence of harmonics,the total voltage harmonic distortion rate of the capacitors under the influence of harmonics is obtained.Through the particle swarm optimization algorithm,the total harmonic distortion rate of the voltage of each node is controlled within the specified limit value,and the capac⁃itor is optimally configured to realize the reactive power loss re⁃duction control of the capacitor.The experimental results show that using the proposed mrthod,the optimized capacitor can effec⁃tively inhibit the harmonic generation,reduce the power grid loss by about 37%,and have the advantage of high energy saving.
作者
宋波
SONG Bo(College of Water Resources and Hydro-Electric Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China)
出处
《电网与清洁能源》
2019年第11期7-12,共6页
Power System and Clean Energy
基金
国家自然科学基金资助项目(51077109)~~
关键词
谐波影响
电力电容器
协调
无功降损
优化配置
畸变
harmonic effects
power capacitors
coordina⁃tion
reactive power loss
optimize configuration
distortion
