CAJ | 학술논문

在电力系统中，变压器主变是用来输送电能、升高和降低电压的关键设备。虽然变压器经过了不断的改进，但还是存在误动作的情况，这对电力系统的安全、稳定运行造成了很大影响，大大降低了供电的可靠性。简单介绍了变压器的故障、非正常运行工况和主变差动保护的基本原理。通过分析浦东地区改造中的变电站、运行中的变电站和新投运的变电站主变差动保护误动作的原因，提出了防止主变差动误动的对策。
재전력계통중，변압기주변시용래수송전능、승고화강저전압적관건설비。수연변압기경과료불단적개진，단환시존재오동작적정황，저대전력계통적안전、은정운행조성료흔대영향，대대강저료공전적가고성。간단개소료변압기적고장、비정상운행공황화주변차동보호적기본원리。통과분석포동지구개조중적변전참、운행중적변전참화신투운적변전참주변차동보호오동작적원인，제출료방지주변차동오동적대책。
In the electric power system, transformer main transformer is used to transport electricity, raise and lower the voltage of the key equipment. Although continuous improvement after the transformer, but there’s still a misoperation, the safe and stable operation of power system caused great influence, greatly reduces the power supply reliability. Simple introduced the transformer fault and abnormal operating conditions and the basic principles of main transformer differential protection. By analyzing the Pudong district redevelopment in substation, the running transformer substation and a new operation of substation main transformer differential protection misoperation reason, puts forward the measures to prevent the main transformer differential protection misoperation.