有载调容变压器智能保护技术研究

发布时间：2018-03-09 08:14

本文选题：有载调容变压器　切入点：自适应容量变化过载保护策略(ACCOP)　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

【摘要】：有载调容变压器是一种新型节能变压器,能在不中断供电的情况下,根据负荷变化自动调节容量,避免用电负荷长期达不到变压器运行的经济负荷状态,即避免处于“大马拉小车”状态。其作为节能减排的利器,近年来广泛用于油田、排灌、水产养殖、农村电网等周期性、季节性负荷变化显著的场合。尤其在当前国家承担繁重的减排国际义务的背景下,电力系统使用节能设备的需求越来越迫切。有载调容变压器既要保证安全供电,又要兼顾降低变损的任务,使它的运行管理较常规的变压器有本质的区别,对有载调容变压器进行智能实时保护具有重要的实际意义。论文在当前有载调容变压器运行管理现状的基础上,通过深入研究分析有载调容变压器的工作原理、性能参数及功能缺失类型等情况,在现行调容变上运行控制技术上,增加自适应容量变化过载保护策略(Adaptive Capacity Change of Overload Protection,下文中简称ACCOP)和小容量切换到大容量时的负荷限制策略(Small Capacity to Switch to the Large Capacity Load Limit,下文中简称SSLLL),避免了由于变压器过载而导致的变压器损坏故障,提高供电质量,改善容量转换开关工况和延长使用寿命,延长运维周期,减少运维工作量。通过控制保护技术及功能的完善,来满足新型节能变压器的运行管理要求,从而保证了低压配电系统的安全供电和节能减排目标的双实现。
[Abstract]:Load regulating transformer is a new type of energy saving transformer, which can automatically adjust capacity according to load change without interruption of power supply, and avoid the economic load state that power load can not reach transformer operation for a long time. That is to say, to avoid being in a "big horse car" state. As a sharp tool for energy saving and emission reduction, it has been widely used in recent years in oil fields, irrigation and drainage, aquaculture, rural power grids, and so on. Especially in the context of the heavy international obligations of the state to reduce emissions, the demand for the use of energy-saving equipment in the power system is becoming more and more urgent. At the same time, it is necessary to take into account the task of reducing the loss, so that the operation and management of the transformer is essentially different from that of the conventional transformer. It is of great practical significance to carry out intelligent real-time protection for the on-load regulating transformer. On the basis of the current operating and management situation of the on-load regulating transformer, this paper analyzes the working principle of the load regulating transformer through in-depth research and analysis. Performance parameters and missing types of function, etc., in the current operation control technology, Add adaptive Capacity Change of Overload protection strategy and load restriction strategy for small Capacity to Switch to the Large Capacity Load limit when small capacity switches to large capacity. Transformer failure caused by load, To improve the quality of power supply, improve the working condition of capacity switch and prolong the service life, prolong the operation and maintenance period, reduce the workload of operation and maintenance. Through the improvement of control and protection technology and function, to meet the requirements of the operation and management of the new type of energy-saving transformer, Thus, the safe power supply and energy saving and emission reduction goals of low-voltage distribution system are guaranteed.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM41

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