13 results about "Switching loop" patented technology

The embodiment of the invention provides a control method, device and equipment for low-voltage side switching equipment of a main transformer, a storage medium and a program product. The method comprises the following steps: acquiring a first current in a switch loop of first switch equipment; in response to the first current greater than or equal to the target safety current, determining at least partial load according to the first current and the target safety current; transferring at least part of the load of the first switching device to at least one second switching device, the second switching device having a load margin; the first switch device and the second switch device are power distribution control devices running in parallel on the low-voltage side of the main transformer; the target safety current is determined according to the historical measurement current of the switch loop and the historical measurement temperature under the historical measurement current. The method is used for improving the control accuracy of the low-voltage side switch equipment of the main transformer.

The application discloses a high-voltage loop control method, a master control box and a power utilization equipment thereof, and is applied to a battery management unit. The battery management unit and a manual maintenance switch are connected in series to form an interlocking switch loop. A control unit is in communication connection with the high-voltage loop. The method comprises the following steps: collecting circuit parameters of the interlocking switch loop; judging whether the manual maintenance switch in the interlocking switch loop is turned on or not according to the circuit parameters of the interlocking switch loop; and if it is judged that the manual maintenance switch in the interlocking switch loop is turned on, turning on the high-voltage loop.

To provide an electric leakage detection system and an electric leakage detection method applied to a circuit board including a plurality of traces.SOLUTION: The system includes a plurality of parallel switch loops, a voltage generator, a controller, and a decision device. Providing a plurality of parallel switch loops, each switch loop being disposed with a first switch, a second switch, and a probe connected to a node between the first switch and the second switch, the probe corresponding to one of the plurality of traces of the circuit board, inputting a voltage to the first switch of each of the plurality of parallel switch loops, controlling conduction of each of the first switch and the second switch of each of the plurality of parallel switch loops to generate an electrical signal between two of the plurality of traces of the circuit board, and receiving the electrical signal and determining whether the electrical signal exceeds a preset threshold.SELECTED DRAWING: Figure 2

A relay contact rebound time testing device belongs to the technical field of relay time characteristic testing, and comprises a relay testing socket, a main control board, a touch screen and a 24V driving power supply, the main control board is respectively connected with contacts of the relay testing socket through a main control board connector, the touch screen is connected with the main control board through a serial port, and the 24V driving power supply is connected with the main control board. The main control board is provided with a single-chip microcomputer connected with the relay, input pins of the single-chip microcomputer are respectively connected to a series loop and a parallel loop of contacts of the tested relay, and output signals of the single-chip microcomputer are connected to a contact relation logic switching loop and a power supply access loop of the tested relay. According to the utility model, the contact of the relay to be tested is connected to the test interface of the main control unit on the main control board through the logic switching of the internal circuit of the main control board, the relay to be tested is driven by the 24V driving power supply to act, the automatic test of the relay contact rebound is completed, the test result is automatically saved, and whether the test result is qualified is automatically judged.

The application discloses a silicon controlled rectifier arc extinguishing failure detection method, device, medium and product, and relates to the field of relay arc extinguishing. The method comprises the following steps: when the first relay needs to be attracted, the silicon controlled rectifier is turned on, and the first relay is triggered to be attracted after detecting that the real-time current of a switch loop exists for a first preset time; after the first relay is attracted, the silicon controlled rectifier is turned off after waiting for a second preset time; after the first relay is attracted, the first current effective value of the switch loop is detected; when the first current effective value is lower than a preset threshold value and the duration reaches a third preset time, it is determined that the first relay is in an abnormal state; when the first relay needs to be turned off, the silicon controlled rectifier is turned on, and the first relay is synchronously triggered to be turned off; whether the first relay is in an abnormal state is further determined. The method realizes comprehensive detection on the working state of the silicon controlled rectifier arc extinguishing circuit, and improves the reliability of the silicon controlled rectifier arc extinguishing circuit in actual application.

The invention discloses an AI self-tuning direct-current converter system based on a coupling voltage-multiplying resonance network, which belongs to the technical field of power electronic converters and comprises an input filtering and switching loop, a charging and discharging loop, a voltage-multiplying filtering output loop and a deep learning control subsystem. Through the boosting effect of the voltage-multiplying filtering output loop and in combination with the charging and discharging characteristics of the three-winding coupling inductor, the turn ratio of the three-winding coupling inductor and the duty ratio D of the switching tube are cooperatively adjusted, so that the DC converter realizes high-gain and high-flexibility boosting performance; according to the topology, soft switching is achieved through resonance formed by the leakage inductor and the capacitor, and the working efficiency is remarkably improved; through deep learning and AI training, specific parameters of elements in a circuit are set and parasitic parameters are determined, and through a mode of AI self-tuning PID parameters, a control mode is simplified, and closed-loop control of a system is realized.

The invention discloses a transformer air cooling control system dual-power-supply automatic switching loop and a control method, and relates to the technical field of power equipment control. The method comprises the following steps: monitoring voltage and frequency parameters of main and standby power supplies in real time and calculating quality indexes thereof; meanwhile, on the basis of the transformer winding temperature, the environment temperature and the change rate of the transformer winding temperature and the environment temperature, the future trend is predicted through an ARIMA time sequence model, and therefore the cooling load requirement is dynamically evaluated; and finally, judging and executing switching by integrating the power supply quality index, the cooling load demand and the change trend thereof through the integrated decision logic and integrating the power supply quality index and the cooling load demand. A corresponding loop comprises a power supply monitoring module, a power supply quality calculation module, a load demand acquisition module, a switching judgment module and a switching control module. According to the invention, by introducing a self-adaptive threshold adjustment mechanism based on the cooling load, the problem that a traditional fixed threshold switching method cannot adapt to the dynamic working condition of the transformer is solved, and more accurate, reliable and impact-free dual-power automatic switching is realized.

The invention provides an SRB switch loop detection method, a related device and a computer storage medium, and the method comprises the steps: receiving message information, and recording the message information and a first port number into a message table; wherein the message information comprises a timestamp and source address information; the first port number is a port number receiving the message information; if a second port receives the message information which is the same as the timestamp and the source address information in the message table, determining that a loop exists at present; wherein the second port is a port except the first port; and if no message information which is the same as the timestamp and the source address information is received by the second port in the message table, determining that no loop exists at present. According to the invention, no extra loop detection protocol is needed, no complex configuration is needed, whether the loop appears on the SRB switch can be detected only by using the characteristics of the service message, and the loop detection efficiency and accuracy are effectively improved.

The application discloses a substation transformer spare phase automatic switching loop, characterized in that: collecting main transformer normal phase related primary equipment signals, the main transformer normal phase including transformer A phase, transformer B phase and transformer C phase, judging whether the spare phase is put into based on the three-phase state of the main transformer normal phase, when the spare phase is put into, switching the non-electric quantity signal of the spare phase and the current signal of the spare phase to the control protection circuit of the relay protection. The main transformer normal phase related primary equipment signals include the position state of the main transformer high-voltage side knife switch, the position state of the main transformer high-voltage side bypass knife switch and the position state of the main transformer medium-voltage side knife switch. The conditions for judging whether the spare phase is put into include: when the corresponding phase of the main transformer normal phase on both sides of the bypass knife switch is closed, it indicates that the corresponding phase of the main transformer normal phase is withdrawn, and at the same time, the spare phase is in the put-in state; and only when the three phases of the main transformer normal phase are in the put-in state, the spare phase is withdrawn.

The utility model discloses a channel switching connector used for calibrating an SOE tester. The channel switching connector comprises a first dial switch, a second dial switch, an SOE tester connection socket, a first female joint, a second female joint and a DC power supply socket connected with a DC power supply for power supply. A first dial switch and a second dial switch are adopted to form a switch loop for calibrating the SOE tester, a direct-current voltage source is connected into the switch loop of the calibrated tester, the successive action closing process of a switch group is converted into a form of sequentially outputting levels, and the time difference generated by any two paths of levels is measured through a time interval measuring instrument. Therefore, the calibration of the time interval parameter of the SOE tester is realized.

The application relates to a high-voltage switch loop resistance rapid testing method, device, equipment, storage medium and program product. The method comprises the following steps: sequentially applying a strong pulse current with a first time period and a target test current with a second time period to a conductive loop of a high-voltage switch to be tested; the first time period is less than the second time period, and the current value of the strong pulse current is greater than the current value of the target test current; during the application of the target test current, after the loop current of the conductive loop enters a stable state, a plurality of loop voltage values and corresponding plurality of loop current values between the two ends of the conductive loop are collected; and the loop resistance value of the conductive loop is determined according to the plurality of loop voltage values and the corresponding plurality of loop current values between the two ends of the conductive loop. The method can improve the high-voltage switch loop resistance test efficiency.

One aspect of the disclosure relates to an electric leakage detection system and method. The invention discloses an electric leakage detection system and method applied to a circuit board. The circuit board comprises a plurality of lines. The electric leakage detection system comprises a plurality of switch loops which are connected in parallel, a voltage generator, a controller and a judgment device. The electric leakage detection method comprises the following steps: providing a plurality of switch loops connected in parallel, each switch loop being configured with a first switch, a second switch and a probe connected to a node between the first switch and the second switch, the probe corresponding to a line in the plurality of lines of the circuit board; inputting a voltage to a first switch of the plurality of switching loops; controlling the conduction of the first switch and the second switch of each switch loop so as to generate an electric signal between any two lines on the circuit board; and receiving the electrical signal and determining whether the electrical signal is greater than a default critical value.

The invention relates to a loop resistance test wiring device of a handcart switch, and belongs to the technical field of electric power system equipment, the loop resistance test wiring device comprises a central rotating rod, the bottom end of the central rotating rod is rotatably provided with a hinge assembly I, and the side surface of the hinge assembly I is uniformly provided with at least two foldable hinge frames in a hinged manner along the circumferential direction; the center rotating rod is further rotationally sleeved with a second hinge assembly used for driving the hinge frame to be folded or unfolded when the center rotating rod rotates. The free end of the hinge frame is hinged to a connecting piece, and the connecting piece is provided with a binding post used for being connected with a loop resistance tester. According to the invention, reliable wiring can be completed, one-time firm and reliable wiring of the loop resistor is realized, and the efficiency of a handcart switch loop resistor test experiment is remarkably improved.