2results about How to "Convenient on-site debugging" patented technology

The utility model relates to a kind of protective atmosphere electroslag furnace with furnace leg pneumatic clamping device, gas cylinder telescopic component is set in the lower of upper furnace leg;Lower furnace leg is set in the lower of upper furnace leg;Pneumatic clamping component is set in the upper of lower furnace leg;Gas cylinder telescopic component is through telescopic to pneumatic clamping component;Pneumatic clamping component clamps gas cylinder telescopic component, connects or disconnects the large current passage between upper furnace leg and lower furnace leg.Compared with the furnace leg clamping system of traditional single furnace head double-station rotary gas-protected electroslag furnace, the above problems are solved by adopting cylinder clamping mode and position encoder positioning mode, which has the advantages of low investment cost, high positioning accuracy, safe and reliable operation, convenient maintenance, good environmental compatibility and other advantages, solves the technical problems of traditional single furnace head double-station rotary electroslag furnace, such as complex sealing system, difficult leakage maintenance, large space occupation, high investment cost, poor environmental compatibility, large positioning error, low control accuracy and low production efficiency.

The application discloses a kind of hybrid signal injection type capacitance current compensation method, system, equipment and medium based on parameter self-correction, is specifically related to electrical automation and digital technology field.The method comprises: by main station to distribution network inject wideband signal, response signal and zero sequence signal are collected by column device;Based on U1, I1 data, using improved recursive least square method on-line real-time identification line equivalent capacitance and resistance to ground, realize parameter self-correction;According to zero sequence voltage amplitude automatic switching signal injection method and displacement voltage method calculate capacitance current, and utilize Kalman filtering to carry out data fusion calibration;Finally based on identification parameter, through parameter-compensation amount mapping model dynamic determination arc suppression coil adjustment step size, carry out fast closed loop compensation.The application realizes on-line real-time identification and self-correction of distribution network capacitance parameter to ground, reaches fast, accurate compensation capacitance current under all-weather operation condition, ensures that system residual flow meets requirements.