36 results about "Power relationship" patented technology

The invention provides a power distribution monitoring terminal, which relates to the technical field of power distribution applications, including a collection module, a control module and an execution module; The power consumption of electrical equipment, and send the delivered power and consumed power to the control module; the control module is connected to the execution module, and is used to input the delivered power and consumed power into the calculation model to obtain the power relationship between the delivered power and consumed power , and judge whether the power relationship satisfies the threshold relationship range, if not, send the first control signal to the execution module; the execution module is used to perform corresponding operations according to the first control signal, and the power distribution detected by the power distribution monitoring terminal and power consumption, so that users can understand the power consumption situation, and when a suspected fault is detected, it can ensure power safety and avoid major property losses.

A method of monitoring a power transmission system of an aircraft, the aircraft including at least one main rotor driven in rotation by a rotor mast and an auxiliary unit having an auxiliary rotor. Control means control the auxiliary rotor. A power relationship is determined providing a first reduced power parameter of the auxiliary unit as a function of a position (POS) of the control means. A setpoint limit is set for a second power parameter for the rotor mast. A current position (POSACTU) of the control means is determined and a calculated value (Vcal) is also determined at least by applying the current position (POSACTU) to the power relationship. A limit value that is not to be exceeded by a power plant is determined, with the limit value being equal to the sum at least of the setpoint limit plus the calculated value.

The invention discloses an intelligent electric torque wrench and belongs to the technical field of electric torque wrenches. The intelligent electric torque wrench comprises a mechanical switch, a speed change mechanism, a speed reduction mechanism, a wrench output shaft and a counterforce arm and further comprises a torque control system. The torque control system comprises a power source, a voltage sensor module, a power control module, the mechanical switch, a motor, a current sensor module, a microprocessor module, a display module and a keyboard input module, wherein torque-power relationship data are stored in the microprocessor module; a normally-open contact closing signal of the mechanical switch is transmitted to the microprocessor module; the microprocessor module inquires the torque-power relationship data according to a required torque value so as to obtain the power value of the motor and drives the power control module; the motor rotates according to the power value controlled by the power control module. The intelligent electric torque wrench is high in anti-jamming capacity, and the output torque control precision of the wrench is improved.

The invention relates to a load flow calculation method based on a generator node type. The method is characterized in that a load flow calculation model containing a P beta node is generated by defining the P beta node, a new Jacobian matrix equation is established by adopting a Newton-Raphson method and finally the equation is modified to realize load flow iterative solution. By using the method, different voltage regulation requirements can be met by adjusting beta under the condition of given upper and lower limits of generator reactive power according to different positions of a generator in a system, the reactive regulation capacity of the generator can be fully utilized by correctly selecting beta, the situation that the generator loses the regulation capacity and becomes a PQ node due to a reason that reactive power exceeds the limits is avoided, and the actual voltage-reactive power relationship during the voltage regulation of the generator can be reflected.

A method of port policy management for active charging of a peripheral device having a first communication port and a second communication port may include: detecting whether there is an active power connection at the peripheral device; in response to detecting the active power connection, determining The relationship between the first communication port and the second communication port; based on the relationship, the peripheral device determines the power relationship between the peripheral device, the first communication port and the second communication port; selectively configures the first communication port, the second communication port and two communicating ports with the peripheral device to match a power relationship; and enabling active charging of the peripheral device if the power relationship supports active charging.

A method and apparatus for managing an Inline Power relationship between and among a first network device acting as power sourcing equipment (PSE) to provide Inline Power to a second Powered Device (PD) and a third device. In one aspect of the invention, the powered device(s) and the third device are powered (at least in part) by the PSE using inline power from at least one port (which may include more than one PSE) and they are powered over one or more sets of cables.

The invention relates to the field of moulds, and provides a power design method for injection mold parts and heating pipes thereof. The injection mold part provided by the present invention includes a mold body and a plurality of heating pipes. The mold body has a plurality of first mold cavities distributed in m rows and n columns. The first mold cavities in each row are distributed along the first direction, and the first mold cavities in each row are first The mold cavity is distributed along the second direction, at least m+1 of the multiple heating tubes are distributed into m+1 rows along the first direction, and at least n+1 of the multiple heating tubes are distributed into n+1 along the second direction The plurality of heating tubes encloses m×n spaces, and each first cavity corresponds to each space one by one. The present invention designs the power relationship of each heating tube according to the dimensional parameters among the first cavity, the end face and the heating tube, which not only helps to make each first cavity receive uniform heating, but also helps to improve the molding quality, and also helps to reduce heating The number of design experiments of the tubes is beneficial to quickly determine the power of each heating tube.

The invention discloses a reactive power regulation method for fans in a wind power farm under remote-control failure condition. The reactive power regulation method comprises a judgment mechanism of remote-control faliures, a conversion mechanism of a remote-control failure occurance trigger remote control mode and a one-machine mode, and a calling mechanism of a one-machine reactive power regulation mode, which are all triggered to be executed according to a certain time order in sequence, wherein the one-machine reactive power regulation mode is as follows: setting an active power-reactive power relationship curve of each fan in the wind power farm; and performing one-machine reactive power regulation according to change rules of the curve, wherein the curve is obtained by analyzing long-time operation record data of one fan in a whole regulation mode under a normal remote-control state. The reactive power regulation method has a good reactive power supporting capability in a remote-control failure state, and stablility of the bus voltage of the wind power farm under a remote-control failure condition can be guaranteed and a stable power grid is maintained.

The invention discloses a resource allocation method in a two-way relay cognitive radio system based on the DF protocol, which uses the capacity maximization feature of the DF protocol to obtain the power relationship between cognitive mobile users, base stations and each relay; and then Using this relationship and the power constraints used by cognitive mobile users to transmit signals to the relay, and the power constraints used by the base station to transmit signals to the relay, the two-way relay cognitive radio system is obtained when transmitting signals through each relay SNR, and then find a set of SNR combinations by permuting and combining all SNRs, the sum of all SNRs is the largest under the condition of meeting the interference limit, and then according to all the SNR combinations found The sum of the signal-to-noise ratio is used to obtain the maximum system capacity and the power used for the corresponding relay and relay broadcast signals; the advantage is that the system capacity is improved, and only the power used for each relay broadcast signal can be solved, simplifying The power solution process is simplified and the complexity is reduced.