Economic Operation Of Transformer Based On SCADA

Along with our country city and countryside electrical network transformation and the electric power market development, to the distribution transformer security, the reliable movement set a higher request. Realizes the distribution transformer reasonable movement, not only must consider the economic agent, the realization power loss is smallest, must consider the electrical power system the security and the power supply reliability.The transformer economy movement, is refers in guarantees the transformer safe operation and the guarantee to the user electricity supply capacity foundation in, causes the transformer to lose under the low condition in the electrical energy to move. Its concrete meaning is refers in guarantees the transformer safe operation, the transmission electric quantity, satisfies the production request in the foundation, the full use existing equipment, does not increase (or increase are very few) the equipment investment, through selects the transformer according to qualification the best movement way, the load regulation optimization, the transformer operating position optimal fit as well as technical measures and so on improvement transformer movement condition, achieved maximum limit reduces the transformer the electrical energy to lose and to enhance the power source side power factor the goal. The transformer economy movement essence is under the technical economy permission condition transformer electricity saving movement.This article theoretically has first analyzed the transformer structure, the equivalent circuit, the technical parameter and the active power, the reactive power load loss characteristic, definite transformer economical movement region. From the economical movement angle, carries on the computation analysis to the transformer power loss size, chose in the different load situation reasonable movement way, and gave the example analysis. The accurate equipment parameter is the economical movement premise, this article uses the power distribution automated system real-time measurement transformer to active, data and so on idle work, voltage, establishes the corresponding database, uses the least squares method, through the curve fitting computation, carries on the real-time examination statistics to the transformer movement parameter and the power loss characteristic, obtains conforms to the actual situation transformer movement characteristic, arranges the transformer take this as the basis the reasonable movement way. Therefore, this article take a transformer substation 35/6.3kV distribution transformer as the example: Has carried on the active loss and the reactive loss load characteristics and the related parameter examination to it. Lays the foundation for the transformer economy movement.The transformer economy movement is in guarantees the transformer safe and in the foundation which supplies power normally to the user, the full use existing equipment and under the original fund condition, through selects the transformer, the adjustment load, technical measures and so on improvement transformer movement condition according to qualification, realizes the power loss to be smallest. The national standards "The industry and mining enterprise power transformer economy movement leads then" Stipulation: Is loaded with the spare transformer to use electricity the unit, should first choose the power loss small transformer to put the operation; Has the multi-Taiwan transformer parallel running transformer substation, should according to the variation of load rule, the choice optimal fit way movement; Under safe, economical, reasonable condition, through the adjustment load, enhances the load factor and the power factor, causes the transformer to work in the economical operating range optimal movement section. This article also cited the actual example to show.Moreover, this article to will shoulder the forecast to use in the transformer security economy movement, processed the load undulation the method to carry on the discussion correctly. Uses in the transformer the distribution network load forecast method the security economy movement, but how is the main purpose solves when the pure economical movement the pure consideration power loss adjusts the transformer load to create the system safety hidden danger many times the question and the science use transformer overload capacity question, also how deals with the load undulation issue which the random factors creates.