Main transformer cooler switching method and system

Abstract

The invention provides a main transformer cooler switching method. The main transformer cooler switching method comprises the following steps that a main control module sets a cooler with the running state value being 1 as a main cooler, sets a cooler with the running state value being 2 as an auxiliary cooler and sets a cooler with the running state value being 3 as a standby cooler; the main control module judges whether to start the main cooler or not according to the first state information and a first judgment method; second state information is collected, and the main control module judges whether the auxiliary cooler is started or not according to the second state information and a second judgment method; third state information is collected, and the main control module judges whether the standby cooler is started or not according to the third state information and a third judgment method; and one is added to the operation state values of the plurality of coolers to realize priority switching, and a new main cooler, a new auxiliary cooler and a new standby cooler are set according to a new operation state value, thereby realizing priority adjustment of the coolers.

Description

Technical field [0001] The present invention relates to the field of main converter cooling control, and more particularly to a primary change cooler switching method and system. Background technique [0002] Pumped energy storage power plant main transformer is converted into thermal energy to increase the temperature of the transformer winding and the temperature of the insulating oil therein. The role of the primary change cooler is to reduce the temperature of the insulating oil in the transformer, thereby reducing the temperature of the transformer winding and the core, so that the main transformer is operating normally. Therefore, whether the primary change cooler is safe and reliable, there is a significant impact on the normal operation of the main transformer. At present, the cooler is not automatically switched automatically. It does not distinguish whether the cooler (leak / motor) failure is in use, which will start the spare cooler, which may cause the temperature th...

AI Technical Summary

Problems solved by technology

At present, when the cooler fails, the priority will not be automatically switched. The original logic does not distinguish whether the cooler with the (leakage / motor) failure is in use or not, and will start the backup cooler, which may cause the temperature to not reach the start when the auxiliary cooler is put in. , the auxiliary cooler (leakage / motor) fails and the standby cooler is activated, so the coolers put in exceed the actual cooling demand of the main transformer, resulting in a large energy waste

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