With the rapid development of power industry in our country, people have more and more demand for electric energy. There is a great contradiction between the demand for electric energy and electricity. Since there are many problems in the transmission of electric energy in substation operation, how to solve the problem of power transmission in substation operation has become an important issue in relay protection.%随着我国电力行业的快速发展,人们对电能的需求量越来越大,在电力能源和用电需求上产生很大的矛盾,由于变电运行中的电能输送存在很多问题,造成在电能使用上的资源紧张,如何解决变电运行中的电量输送已成为继电保护中的重要问题.
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