在本文是以220KV三绕组变压器为保护对象，结合具体的变压器型号，简单

In this article, 220KV three-winding transformer is used as the protection object, combined with the specific transformer model, the failures that may occur during the operation of the transformer are briefly explained; then the working principle of the relay protection type of the transformer is briefly introduced and the principle of setting is analyzed ; Then, in combination with the transformer parameters given above, the short-circuit current calculations in the minimum operation mode and the maximum operation mode were performed, and the setting calculation and sensitivity verification of the relay protection configured on the target transformer were performed; finally, draw The overall configuration diagram of the transformer relay protection, and summarizes the full text of how to protect the transformer safety and stable operation.

In this paper is 220KV three winding transformer to protect the object, combined with the specific transformer model, a simple description of the transformer may be out of work failure, and then the transformer relay protection type of work principle, made a brief introduction and set principle analysis, and then, combined with the transformer parameters given in front, carried out the short-circuit current calculation under the minimum operating mode and the maximum operating mode, and the target transformer configured relay protection for the calibration calculation and sensitivity of the verification; The total configuration diagram of transformer relay protection is drawn out, and the paper summarizes how to protect the transformer's safe and stable operation.

In this paper, 220kV three winding transformer is taken as the protection object, combined with the specific transformer model, the possible faults of the transformer in operation are simply described; then, the working principle of the transformer relay protection type is briefly introduced and the setting principle is analyzed; then, combined with the parameters of the transformer given above, the minimum operation mode and the maximum operation mode are carried out The short-circuit current is calculated, and the setting calculation and sensitivity verification of the relay protection configured for the target transformer are carried out; finally, the general configuration diagram of the transformer relay protection is drawn, and the full text is summarized to propose how to protect the safe and stable operation of the transformer.<br>