Several abnormal operation instances of REB 103 bus differential relay are introduced. Most of these abnormal operation instances are detected in periodically inspection and commissioning of REB 103 on energized bus.

• 介绍了多起REB103中阻抗母差保护不正常运行实例,大多是在作者进行母差保护定期校验和带负荷试验中发现的。