Dual Configuration Method of Transformer Intelligent Electronic Controller

Abstract

The dual configuration method of the transformer intelligent electronic controller of the present invention includes the following steps: the operation box compares the cooler control output signals of the two electronic controllers, and selects the electronic controller with the largest number of output groups as the effective controller; the two electronic controllers The transformer collects the operating parameters of the transformer separately to obtain the number X of coolers that should be started, and at the same time collects the number N of the current coolers to start; start or stop the cooler by comparing X and N. The present invention realizes the peer-to-peer redundant configuration of two controllers in a true sense, and the two sets of devices operate independently, and the operation box will automatically select the device with the best outlet for output without switching. When any controller fails The system realizes the disturbance-free operation. It ensures the integrity of the system functions, and also omits the communication process, which improves the reliability of the system.

Description

technical field [0001] The invention relates to a dual configuration method of an intelligent electronic controller of a transformer, which is used for a transformer product of an UHV DC converter to ensure reliable and stable operation of the high and low ends of the converter. Background technique [0002] The converter transformer transmits the AC power at the transmitting end to the rectifier, or receives power from the inverter and sends it to the AC power system at the receiving end. In order to ensure the normal operation of the converter transformer, it is necessary to monitor the overall operating status of the converter transformer. Monitoring and control, for the sake of safety, reliability and economy, it is necessary to use some devices to monitor and control the operation of the converter to ensure the safe and reliable operation of the converter. [0003] At present, the service life of the transformer is mainly affected by the long-term operating temperature....

AI Technical Summary

Problems solved by technology

[0007] The active-standby dual scheme requires communication and status synchronization between the active and standby devices, which may lead to switchover failure or even wrong switchover when communication fails

[0008] The relay outlets of the main equipment and the backup equipment of the main-standby dual scheme are connected in parallel to control the oil pump and fan of the transformer. When the controller outlet fails, the control signal for controlling the oil pump or fan may be locked. As a result, the entire system loses redundancy

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