一种低成本动态无功补偿装置及两级协同优化运行方法

为实现高能耗企业配电网低成本动态节能,提出了一种兼顾DSTATCOM快速无功补偿及TSC低成本大容量无功补偿优势的混合型无功动态补偿器.该新型拓扑结构由一台较小容量的DSTATCOM和较大容量的多组TSC构成.其中,DSTATCOM能实现快速连续无功调节,TSC实现无功的分级调节,二者协同工作实现低成本快速无级无功调节.在分析HVC基本工作原理的基础上,本文对HVC的控制方法进行了研究,提出基于专家决策的HVC复合控制策略,确保了HVC快速大容量地进行无功补偿.同时,本文对多组HVC装置同时工作时的优化运行问题进行了深入研究,提出利用两级协同优化补偿算法,获取各补偿装置的最优投运无功量,实现全局优化节能.基于上述思想,为某冶炼厂研制了低成本动态节能系统,运行结果表明该系统比传统无功补偿装置节能效果更佳,同时可推广应用于高压配电网.

A Novel Low-Cost Dynamic Var Compensator and Two-Level Collaborative Optimization Method

To realize energy-saving in distribution grid with low cost,this paper proposes a hybrid var compensator(HVC).The new topology consists of a small capacity DSTATCOM and multi-groups TSC.They work together to realize dynamic var compensation with low cost.Based on the principle analysis of HVC,the control methods of HVC are processed.A compound control strategy based on expert decision is proposed to make sure that the HVC can compensate reactive power with high speed and large capacity.Simultaneously a stud...