Research Of On-load Capacity Transformer Intelligent Protection Techniques

On-load capacity transformer is a new type energy saving transformer,can in the case of uninterrupted power supply,according to the load changes automatically adjust the volume,avoid long-term electricity load short of transformer running state of economic load,namely,avoid in a state of "light load drive".As the most effective tools for energy conservation and emissions reduction in recent years is widely used in oil fields,drainage and irrigation,aquaculture,rural power grids and other cyclical change,seasonal load significantly.Especially in the current national bear heavy emissions under the background of international obligations,electric power systems using demand status of energy-saving equipment has become more and more urgent.Are adjustable capacity transformer is to ensure the safety of power supply,and to reduce the damage of the task,give attention to two or morethings make it running management of the conventional transformer have substaintial distinction,for intelligent real-time protection are adjustable capacity transformer has important practical significance.Based on the current status of on-load capacity transformer operation management as the background,first analyzed the working principle,performance parameters of adjustable capacity transformer,fault types;And then the current capacity increased on the universal operation control system on the overload protection function of Adaptive capacity change(the Adaptive capacity change of overload protection,hereafter referred to as "ACCOP synonymous)switch and Small capacity to large capacity load limit function(Small capacity to switch to the large capacity load limit,hereafter referred to as" SSLLL synonymous),avoid the damage of transformer overload,improve the quality of power supply,improve the capacity of working condition of switch to prolong service life,extend the operational cycle,reduce the operational work.By controlling the improvement of the protection function,meet the requirements of this new type of energy-saving transformer operation management,to ensure the safety of power supply of low voltage power distribution system and double to achieve energy conservation and emissions reduction targets.