【摘要】 主变保护的配置及整定对保证主设备的安全至关重要,介绍了750 kV官亭-兰州东输变电示范工程的系统接线及主变保护配置情况,分析和探讨了示范工程主变保护配置方案、整定、应用原则及整定中应注意的问题,供同行借鉴。750 kV主变后备保护的整定在灵敏性和选择性的取舍等诸多方面存在矛盾,在整定计算时应充分考虑保证电网主设备安全这一重要原则,对后备保护进行合理配置和正确的整定。更多还原

【Abstract】 The configuration and setting of transformer protection is very impoartant to ensure the safety of power equipment.This paper introduces the system connection and transformer protection configuration of 750 kV Guanting to Lanzhoudong substation.The application principle on the configuration and setting of this 750 kV transformer protection is analysed and discussed in datail.The problem needing to regard is also discussed for others′ reference.Since there are so much contradiction in the selectivity and sensitivity of transformer protection setting,the principle to ensure the safety of power equipment should be chiefly take into account in order to achieve a resonable configuration and setting.更多还原