主要介绍了继电保护中的几个误区，引导有关人员冷静对待、正确思考问题，在电气生产一线具有一定实用性。
The paper mainly introduces the misunderstanding in relay protection, guiding the calm treatment and correct thinking of the workers, which is very practical in electrical production.
此系统改变了传统的设计方法，提高了设计效率，具有一定的实用性。
The system may change the traditional design method and enhance design efficiency, and has some practicability.
试验验证了设计方案的合理性和可行性，并具有一定的实用性。
The experimental results show that our design is reasonable and feasible, and has certain practicality.
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