High-voltage transforming cubicle automatic control device suitable for electric arc heater

Abstract

The invention relates to a working state automatic control device of an integration high pressure transforming cabinet, comprising a DSP, a timer connected on the periphery of the DSP, a temperature sensor, a moisture sensor, three A / D converters and an external power source loop. Control signals output by the DSP is accessed to a control end of a contactor after being amplifying by a relay, and the control end of the contactor outputs a switching value to control on off of a high pressure transforming cabinet vacuum switch. Digital signals output by the DSP communicate with a host computer according to the RS485 rule after being converted through a MAX chip. The device works normally in a strong magnetic disturbance environment, and the integral aspect size is only 200*200*100mm, supplied by 12 VDC. According to the invention, the device monitors the temperature, moisture of the environment for the high pressure transforming cabinet, cooling water flow, intake pressure and leakage current of a power receiving device (an arc heater) and the like in the fastest speed of 1 time / s in the condition of 10000 VAC, 12-60 DEG C, 2-70% RH, and strong electromagnetic interference, wherein the error in monitoring of the system is in the second level or so.

Description

(1) Technical field [0001] The invention relates to the technology of a high-voltage transformer cabinet, in particular to an integrated automatic control device for the working state of a high-voltage transformer cabinet. (2) Background technology [0002] In the ground simulation experiment system for heat-resistant materials with the plasma arc heater as the core, the high-voltage transformer cabinet is the key device to provide power for the heater, and its working status is the decisive factor for the safety and stability of the entire system. The plasma arc heater needs a continuous 10000V, 800A AC power supply during the working process, and the high-voltage transformer cabinet is responsible for converting the voltage and current in the industrial grid to provide power for the heater. Due to the extremely large working voltage and current, the high-voltage substation cabinet has high requirements on the ambient temperature, humidity and other conditions in the workin...

AI Technical Summary

Problems solved by technology

At this stage, most of the control devices of high-voltage substation cabinets adopt the method of "decentralized monitoring and human control". A large number of sensors are used to monitor the working environment parameters of high-voltage substation cabinets and the working status of powered equipment, and the central console is used to centrally process sensor signals and prompt operators This control method has shortcomings such as complex on-site wiring, low degree of automation, poor anti-interference ability, and inability to respond to abnormal situations in time.

However, the new high-voltage substation cabinet control device with the characteristics of integration, miniaturization, high degree of automation, and sensitive response has not been reported yet.

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