Automation controller and operation fault protection method

Abstract

The invention discloses an automation controller, which comprises an AC power supply input module, a power supply conversion module, a power supply switching module, a charge and discharge managementmodule, a power storage module, a low-voltage protection module, a main control module, an on-off control module, an analog acquisition module, a remote communication data acquisition module, a directcurrent acquisition module, an operating panel module, a wireless communication module, a control output module, a coil and an output driving interface module, wherein the on-off control module adopts a bistable state combined self-holding relay, and the driving mode of the relay is bistable state reverse pulse driving. The beneficial effects of the invention are that the self-holding relay can ensure that an opening operation is not performed when an exception occurs inside the controller so as to ensure a switch to keep the original operating state; a closing state of the switch can still be kept when a fault occurs inside the controller; and a control module is locked when the low-voltage protection module loses effectiveness.

Description

technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to an automatic controller and an operation fault protection method thereof. Background technique [0002] Nanning Power Supply Bureau's 35KV Jinguang Station 10kV lower corrugated line 5 automation controllers were put into trial operation on July 5, 2016. After two days of operation, an abnormal trip occurred, resulting in 4 switches in the rear section without failure, voltage loss and opening, causing a power outage across the line. After the faulty controller was removed, it was found that there was serious water ingress inside, which caused the switching power supply to be damaged. The working power of the system was completely dependent on the battery for power supply. After the battery voltage was too low, the controller could not keep the switch on, causing a power outage on the line. The reasons for the failure are: 1. The faulty controller is not proper...

AI Technical Summary

Problems solved by technology

[0002] Nanning Power Supply Bureau's 35KV Jinguang Station 10kV lower corrugated line 5 automatic controllers were put into trial operation on July 5, 2016. After two days of operation, an abnormal trip occurred, resulting in 4 switches in the rear section without failure, loss of voltage and opening, causing a power outage across the line

After the faulty controller was disassembled, it was found that the internal water had entered seriously, causing damage to the switching power supply. The working power of the system was completely dependent on the battery power supply. After the battery voltage was too low, the controller could not keep the switch on, causing a power outage on the line.

The reasons for the failure are: 1. The faulty controller is not properly protected, resulting in water ingress inside; 2. After the switching power supply is damaged, when the battery is activated, the battery low voltage protection function is not activated, the battery is over-discharged, and the controller sends an error Action signal; 3. After the controller has an internal fault, it cannot maintain the closing state of the switch

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