36 results about "Power relationship" patented technology

Wireless terminals, e.g., mobile nodes, receive, identify, and measure broadcast signals from a plurality of cells. They determine relative transmission power relationships corresponding to the received measured signals and determine at least two channel gain ratios. A geographic area is determined corresponding to the obtained at least two channel gain ratios and information indicating the geographic region in which such gain ratios may be detected. Each cell's base station transmits broadcast signals, e.g., beacon signals, pilot signals, and/or assignment signals for one more carriers. Some base stations use multiple carriers at different power levels. Some adjacent cells use different power levels for the same carrier. This carrier diversity approach tends to reduce overall interference in the system, yet provides mobiles with a variety of different strength signals which may be monitored and which vary as a function of distance from the source transmitter.

The invention relates to a method, a computer program product and a device for evaluating a code which is orthogonal to one or more further codes. The method comprises the steps of receiving a signal which carries a code containing a sequence of code symbols, determining for a particular symbol instant at least one channel estimate, determining for the particular symbol instant a compensation value taking into account the at least one channel estimate, compensating each code symbol using the compensation value determined for the corresponding symbol instant, wherein the compensation is performed such that an original power relationship among the individual code symbols contained in the code is restored, and evaluating the code on the basis of the sequence of compensated code symbols exploiting the orthogonality to further codes.

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 discloses a method and a device for processing power parameters. The method comprises the following steps: user equipment (UE) acquires the power relationship parameter and the ratio of a first kind of sub-frames and a second kind of sub-frames, wherein the power relationship parameter is used for indicating the power relationship of the first kind of sub-frames and the second kind of sub-frames; and the UE performs data demodulation operation and/or channel measurement operation on the first kind of sub-frames by utilizing the power relationship parameter and the ratio. Through the method and the device provided by the invention, the problem that the data demodulation or channel measurement of the UE is inaccurate due to different power configurations of different kinds of sub-frames in correlation techniques is solved, and the system performance 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.

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 feasibility analyzing method for accessing distributed power supplies into a transformer station based on voltage deviation. The feasibility analyzing method comprises the following steps of (1) extracting voltage data of a power distribution network through a data acquisition system; (2) calculating the voltage deviation; (3) calculating the limit range of the power distribution network of the transformer station; and (4) calculating the maximal accessing scale of the power distribution network of the transformer station which accesses into the distributed photovoltaic power generation system. The data which is extracted from the step (1) are extracted and the voltage deviation of the power distribution network of the transformer station is calculated. According to a standard requirement, the limit range of the voltage of the power distribution network of the transformer station is obtained. The P-U relationship of different load characteristics of the power distribution network of the transformer station is obtained through analyzing according to a voltage stability P-U curve. The maximal value of the active power of the distributed photovoltaic power generation system which is accessed into the transformer station can be obtained according to the current, the receive-side voltage and a power relationship. Furthermore the maximal accessing scale of the power distribution network of the transformer station which accesses into the distributed photovoltaic power generation system is obtained.

A system and methods for providing substantially uninterrupted electric power to one or more critical loads that significantly allows superior utilization of equipment and physical space, as well as reduction in the environmental footprint of systems for providing substantially uninterrupted electric power to one or more critical loads. The system and methods comprise an arrangement of power modules configured for providing substantially uninterrupted electric power to one or more critical loads using a combination of loads. The combination of loads generally follows a detailed method that comprises grouping of loads and mathematically determining the power relationships between the power modules and one or more loads. Generally, the method comprises determining the characteristics of the power lines that deliver substantially uninterrupted electric power from the power modules to one or more critical loads. Further, the system may comprise a plurality of power delivery architectures.

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 a method for controlling a multi-computing-power board based on a single-path power supply. The method is suitable for a main control board to control the single-path power supply to output voltage to multiple computing power boards, and is characterized by comprising the following steps: establishing a voltage, computing power board optimal frequency point and first computing power relationship correspondence table; establishing a voltage, calculation power board frequency point, second calculation power and total power relationship correspondence table; and accordingto the selected working mode, inquiring the voltage, the optimal frequency point of the computing power board and the first computing power relationship corresponding table or inquiring the voltage, the frequency point of the computing power board, the second computing power and the total power relationship corresponding table, and calculating and outputting corresponding voltage and characteristic frequency points to each computing power board. The invention further discloses a device for controlling the multi-computing-power board based on the single-circuit power supply. The invention relates to the technical field of power supplies. The method and the device for controlling a multi-computing-power board based on a single-path power supply overcome the technical problem of high cost ofthe existing three-path power supply control equipment, save the cost and can randomly switch the working modes of the computing power boards.

The invention provides an energy router modeling and optimization control method based on data driving, and the method comprises the steps: dividing the power data corresponding to the ports of an energy router into a load demand set and a scheduling set; obtaining enough data samples by collecting the electrical data of each port during the operation of the energy router, and then establishing a mathematical mapping model between two types of ports online by using a data mining technology as a power relationship constraint between the ports; meanwhile, establishing mathematical constraint forms corresponding to different optimization modes, converting the optimization scheduling mode of the energy router into an index optimization problem with constraints, and calling a group optimization algorithm to obtain optimization scheduling parameters; then establishing a model based on data driving between the optimal optimization scheduling parameters and the demand load, thereby realizing real-time optimization control of the energy router under different operation loads. The method realizes high transportability and high real-time optimization capability, and can be used for improving operation performance indexes of various energy routers.

The embodiment of the invention provides an electric vehicle power control method and device and a processing circuit. The method comprises the following steps: respectively receiving a voltage signal and a temperature signal output by a battery; the battery output voltage signal is used for describing the voltage output by a battery on the electric vehicle; the temperature signal is used for describing the temperature of the control module; determining a first limiting current corresponding to the battery output voltage signal based on a voltage-limited power relationship; the voltage-limited power relationship is used for limiting the relationship between voltage and current on the basis of combining the residual electric quantity of the battery; obtaining a second limiting current corresponding to the temperature signal through a temperature-limited power relationship; the temperature-limited power relationship is used for describing the relationship between the temperature and the current on the basis of limiting the temperature of the control module; and adjusting the output current of the control module according to the first limiting current and the second limiting current to control the running power of the electric vehicle. Through the method, the problem that the motor cannot work normally due to the influence of voltage or temperature is avoided, and the user experience is optimized.

A method for port policy management for active charge through of a peripheral device that has a first communication port and a second communication port may include detecting whether a valid power connection exists at the peripheral device, in response to detecting the valid power connection, determining a relationship between the first communication port and the second communication port, based on the relationship, determining, by the peripheral device, a power relationship among the peripheral device, the first communication port, and the second communication port, selectively configuring the first communication port, the second communication port, and the peripheral device to match the power relationship, and enabling active charging through of the peripheral device if active charging through is supported by the power relationship.

The invention provides a calibration system and a method for a CD-ROM light-emitting device. The calibration system for a light-emitting device comprises a diode laser as a device to be calibrated, a first microprocessor, an optical detector and a signal calibration circuit. In a calibration mode, the first microprocessor controls power of the light-emitting device by changing values of a drive signal to the light-emitting device, receives a power indication corresponding to the light emitted by the light-emitting device, and determines a power relationship relating values of the drive signal to powers of the light-emitting device according to a power indication for each of a plurality of values of the drive signal. The light detector is used for detecting the light emitted by the light-emitting device to generate an analog signal having a direct ratio to the strength o the output light. The signal calibration circuit having a set reference voltage is used for generating a power indication reverse to the analog signal so as to guide the power indication to be a set maximum value when the analog signal shows that no light is output from the light-emitting device, wherein the set maximum value is a function of the set reference voltage.

The invention relates to a method for determining a voltage power relationship of a voltage droop control converter station. The invention aims to provide a method for determining a voltage power relationship of a voltage droop control converter station, which is suitable for a multi-terminal flexible direct current system and comprises the following steps of: S01, determining a node voltage equation of a whole direct current network by taking a converter station direct current voltage as a variable according to a topological structure of the direct current system and a direct current line parameter; based on the node voltage equation, determining the direct current of any direct current line and the direct current of the converter station so as to determine an analytical formula of the loss of the whole direct current system; S02, selecting various typical operation conditions of the multi-terminal flexible DC system, and calculating the voltage and power level of each converter station under the condition that the loss of the DC system is minimum for each condition; and S03, calculating and fitting a DC voltage power characteristic curve of the converter station based on the voltage and power levels of the converter station under various typical operation conditions. The invention is applicable to the technical field of power system power transmission and distribution.