摘要
变压器位于电网枢纽位置,是无功与谐波等不良因素的聚集地。以变压器为补偿节点,提出一种将级联混合无功补偿设备与变压器结合的新型装置。混合无功补偿系统通过DYn11变压器的高压侧三角形绕组抽头与系统相连,向抽头注入无功电流实现电能质量提升;根据无功补偿设备性能特点,在瞬时功率理论基础上,提出将功率分解应用于混合无功补偿系统,将高频功率分配给静止无功发生器(Static Var Generator,SVG)补偿,低频功率分配给新型结构进行补偿;提出一种基于自适应控制算法的控制策略,提升系统鲁棒性。经仿真验证方案的有效性,对级联结构的混合无功补偿系统的发展具有一定参考意义。
Transformer is the hub of power grid,which is the gathering place of adverse factors such as reactive power and harmonic. Taking transformer as compensation node,a new device combining cascade hybrid reactive power compensation equipment with transformer was proposed.The hybrid reactive power compensation system was connected with the system through the tap of triangular winding on the high voltage side of DYn11 transformer,and the reactive current was injected into the tap to improve the power quality.According to the performance characteristics of reactive power compensation equipment and based on the instantaneous power theory,a method of applying power decomposition to hybrid reactive power compensation system was proposed.The high-frequency power was distributed to the static reactive power generator for compensation,and the low-frequency power was distributed to the new structure for compensation.A control strategy based on adaptive control algorithm was proposed to improve the robustness of the system.The effectiveness of the scheme was verified by simulation,which has a certain reference significance for the development of hybrid reactive power compensation system with cascade structure.
作者
张永熙
朱亮亮
柯振宇
白祥宇
杨胜林
ZHANG Yongxi;ZHU Liangliang;KE Zhenyu;BAI Xiangyu;YANG Shenglin(State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi Power Supply Company,Urumqi 830000,China)
出处
《山东电力技术》
2022年第9期22-28,67,共8页
Shandong Electric Power
基金
国网新疆电力有限公司重点科技项目“基于振动法变压器内部部件松动故障诊断关键技术及工程应用”(SGXJWL00CBJS21004)。
关键词
静止无功发生器
粒子群算法
混合无功补偿
static var generator
particle swarm optimization algorithm
hybrid reactive power compensation
作者简介
张永熙(1992),男,工程师,从事变电一次检修,主要研究方向为电力系统无功补偿。
