CAJ | 학술논문

自适应负荷型配电变压器具有自适应负荷功能和性能特点，可在不切断负荷的情况下，根据系统电压和负荷实际情况，实现变压器电压分接头调整、额定容量运行方式的自动切换、在线负荷换相以及分相无功补偿。阐述了自适应负荷型配电变压器的功能架构设计；解析了其在线负荷换相、有载调容、分相无功补偿和有载调压等功能实现控制原理；给出了动作定值设定方法；建立了功能实现仿真试验模型。经仿真分析，验证了自适应负荷型配电变压器较普通配电变压器具有明显功能优势，适用于负荷季节性强、年平均负载率低、空载损耗占比高、用户端电压合格率和功率因数偏低的农村配电网中，可提升配电台区经济运行水平，保障用户供电质量，降低配电网运行损耗，充分发挥配电层级的节能减排作用。
자괄응부하형배전변압기구유자괄응부하공능화성능특점，가재불절단부하적정황하，근거계통전압화부하실제정황，실현변압기전압분접두조정、액정용량운행방식적자동절환、재선부하환상이급분상무공보상。천술료자괄응부하형배전변압기적공능가구설계；해석료기재선부하환상、유재조용、분상무공보상화유재조압등공능실현공제원리；급출료동작정치설정방법；건립료공능실현방진시험모형。경방진분석，험증료자괄응부하형배전변압기교보통배전변압기구유명현공능우세，괄용우부하계절성강、년평균부재솔저、공재손모점비고、용호단전압합격솔화공솔인수편저적농촌배전망중，가제승배전태구경제운행수평，보장용호공전질량，강저배전망운행손모，충분발휘배전층급적절능감배작용。
A self-adaptive distribution transformer can automatically regulate its tap changer position rated operating capacity, online load phase rotation,and phase by phase reactive compensation according to the system voltage and loading conditions without disconnecting the load. The functional architecture of self-adaptive distribution transformer is described. The controlling principles of online load phase rotation,on-load capacity regulating,phase by phase reactive compensation,and on-load voltage regulation are analyzed.The methods to determine control setting points are proposed with simulation model. Simulation and analysis results demonstrate the obvious advantages of the proposed distribution transformer.It is suitable to be used in rural distribution network,which features seasonal load,low annual average load rate,high no-load losses,and under voltages at the end user terminals and low power factor.By using self-adaptive distribution transformers,the economic operation level of distribution area can be improved,the quality of power supply for end-users will be improved,the operation loss of power network will be reduced,the energy-saving and emission reduction at the distribution network level will be maximized.