Plant electric load distribution method

Abstract

The invention discloses a plant electric load distribution method. A medium-voltage plant power system includes two units, namely a first unit and a second unit. Each unit is provided with two segments of medium-voltage working busbars. The first and second units are provided with two segments of medium-voltage common busbars which are tapped to plant working busbars of different units and are respectively provided with interconnection switches. The two segments of medium-voltage common busbars are respectively connected to the two segments of medium-voltage working busbars of each unit. Single-row configuration fans of the medium-voltage plant power system are all connected to one of the two segments of medium-voltage working busbars. The unit load in the medium-voltage plant power systemis distributed and connected to the medium-voltage working busbars of each unit. The common load is connected to the medium-voltage common busbars. According to the invention, the medium-voltage common segments are configured separately for the common load of the whole plant, the single-row configuration fans are connected to the medium-voltage working busbars in a unified manner, and the medium-voltage common busbars are connected to the medium-voltage working busbars, so that the load balance after the auxiliary machine single row can be maintained.

Description

Technical field: [0001] The invention relates to the field of electric power technology, in particular to the field of plant power load distribution methods. Background technique: [0002] In the prior art, the power load configuration of the medium-voltage power plant in the power plant is as follows: the electric feed water pump is a starter pump, and there is one set for the two units; the condensate pump and the closed cooling water circulation pump are two sets, one for operation and one for standby; Coal mills are transported in five ways and prepared; primary fan, blower fan and induced draft fan are all configured in a single row; other loads such as auxiliary circulating water pumps, air compressors, rainwater pumps, and belt conveyors are public loads. [0003] After the primary fan, blower fan, and induced draft fan are configured in a single row, from the perspective of process flow, when the unit is running, the three major fans in a single row need to be starte...

AI Technical Summary

Problems solved by technology

In this way, the load balance between the two low-voltage split volumes of the high-voltage plant split transformer, which is easy to realize when the auxiliary equipment is double-rowed, is broken.

Therefore, the defect in the prior art is that the original load balance cannot be maintained when the single-row auxiliary machines are collectively arranged on the same medium-pressure working section of the unit.

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