52results about How to "Grasp the running status in time" patented technology

A method for predicting the concentration of aluminum oxide in an electrobath relates to a real-time control for the concentration of aluminum oxide by using a bath control machine real-time measuringand displaying the concentration of aluminum oxide in an electrobath. The method is characterized in that: the real-time predicting process is using the bath control system and the voltage of the real-time detecting electrobath and system current and controlling the discharging interval, the time and the discharging capacity parameter to build an electrobath operating parameter and a relation mode of the aluminum oxide concentration and then predicting the concentration of aluminum oxide in an electrobath and displaying the real-time aluminum oxide concentration on the bath control machine. The method of this invention is suitable for the intermediate point type discharging pre-bake aluminum electrobath of the 70kA-350kA series. This method can control the prediction of the concentrationof aluminum oxide in aluminum and it is beneficial to the production technique and operating stuff to timely know the operating state of the electrobath which is a benefit for the management and control for the production of electrolytic aluminum.

A synchronization accuracy monitoring system of a time synchronization device for electric power equipment, including a central monitoring system, a network management system, and a measuring device. The measuring device is set in a substation and connected to the main clock device, extended clock device, and time-serving device in the substation; The device obtains the time signal of the master clock device in the substation where it is located, converts it into a PTP message encapsulated with E1, and transmits it to the central monitoring system through the E1 channel of the inter-station SDH. The time signal of the clock, compare the time of the main clock of the substation with its own current time, obtain the first time difference and transmit it to the network management system; the measuring device determines the time of the main clock device and the time of the extended clock device in the substation, the second time difference between the times of the timed devices, and transmit the second time difference to the network management system. The solution of the invention can grasp the output accuracy of the time synchronization device in time.

The invention relates to a non-invasive winding temperature measurement method of a forced oil circulation air-cooled layer winding transformer. The controller and the oil pump controller are connected together to collect corresponding data in real time, and at the same time input the transformer structural parameters, winding type, and structural size parameters; establish the heat balance equation between the forced oil circulation air-cooled layer winding transformer winding and the transformer oil; calculate Winding temperature of forced oil circulation air-cooled layer winding transformer. Aiming at the characteristics of the forced oil circulation air-cooled layer winding transformer, the present invention comprehensively considers the surface oil temperature of the transformer, the winding current, the cooling mode and the operation of the forced oil circulation air-cooled cooler, so as to measure the winding temperature of the transformer under various working conditions It is more accurate, which is conducive to transformer operation and maintenance personnel to grasp the operation status of the transformer in time.

The invention discloses a non-intrusive type winding temperature measurement method of an oil-immersed air-cooling layer type winding transformer. The oil-immersed air-cooling transformer layer type winding temperature measure and control instrument is connected with an oil surface thermometer, a current transformer, an environment thermometer and an air-cooling controller, and the corresponding data is collected in real time, and then the transformer structure parameter, the winding type and the structure size parameter are input; a thermal equilibrium equation is established between the oil-immersed air-cooling layer winding transformer winding and the transformer oil; and then the winding temperature is computed according to the surface oil temperature winding temperature, the average temperature rise on the inner oil by the winding, the average temperature on the surface oil by the inner oil, and a layer correction value. For the characteristics of the oil-immersed air-cooling layer type winding transformer, the winding current, the transformer structure size, the winding type, the external environment temperature, the cooler type, the working state and various influence elements are comprehensively considered, the measurement on the winding temperature by the transformer under various working conditions is more accurate, and the transformer operation state can be timely mastered by the transformer operation and maintenance personnel.