796 results about "Automatic Generation Control" patented technology

A system for dynamically managing an electrical power system that determines measures of performance and control criteria for the electric power system, collects at least one automatic generation control (AGC) input parameter to at least one AGC module and at least one automatic load control (ALC) input parameter to at least one ALC module, calculates AGC control signals and loads as resources (LAR) control signals in response to said measures of performance and control criteria, propagates AGC control signals to power generating units in response to control logic in AGC modules, and propagates LAR control signals to at least one LAR in response to control logic in ALC modules.

Methods and systems for simulating a phonocardiogram (PCG) signal that includes an anomalous condition are provided. The method generates pressure and flow signals from a lumped-parameter heart model responsive to anomaly parameters. The anomaly parameters represent the anomalous condition. A timing profile or the timing profile and an amplitude profile are extracted from at least one of the generated pressure and flow signals. An anomalous signal is generated using the anomaly parameters and the extracted timing profile or timing profile and amplitude profile. The anomalous signal is time-aligned and combined with a predetermined non-anomalous signal to represent the PCG signal.

A system for dynamically managing an electrical power system that determines measures of performance and control criteria for the electric power system, collects at least one automatic generation control (AGC) input parameter to at least one AGC module and at least one automatic load control (ALC) input parameter to at least one ALC module, calculates AGC control signals and loads as resources (LAR) control signals in response to said measures of performance and control criteria, propagates AGC control signals to power generating units in response to control logic in AGC modules, and propagates LAR control signals to at least one LAR in response to control logic in ALC modules.

The invention provides an integral optimization method and system for an automatic power generation system of a coal-fired unit. The method comprises the steps of carrying out control valve flow characteristic test and adjustment according to control valve flow characteristic parameters, carrying out combustion optimization on a wind and smoke subsystem and a combustion subsystem, carrying out a fuel disturbance test and a control valve disturbance test to generate typical test parameters, using the typical test parameters to generate a dynamic unit model, constructing a coordinating simulation system according to a coordinating controller and the dynamic unit model, using the dynamic unit model to optimize a feedforward controller and carry out simulation verification on the coordinating simulation system simultaneously, carrying out DCS configuration and parameter debugging in the simulation system, carrying out a constant-voltage slide-voltage variable-load test and a constant-load voltage-transformation test to generate technical indexes of the variable-load rate, the variable-load accuracy, variable-load response time and the main steam pressure accuracy, judging whether the technical indexes meet the preset technical indexes, and if on yes judgment, carrying out a slide-voltage variable-load test to enable the coal-fired unit to operate normally.

The invention provides a realization method for a heat-engine plant speed regulating system model in power system simulation, wherein, not only a coordinated control system of a boiler and a steam turbine is simulated, but also a speed regulation control system of the stem turbine is simulated. A coordinated control system model comprises a realization method of the primary frequency control, the steam turbine master control, the boiler master control and the feedforward control. A model of the speed regulation control system of the steam turbine comprises a realization method of the primary frequency regulation and a valve actuator model. The realization method can correctly simulate the primary frequency regulation function of the heat-engine plant, realize different configuration ways of speed regulation control, in addition, the method can be applied to a boiler model and an automatic power generation control model and meet the requirements of the electromechanical transient state and medium-term and long-term dynamic simulation of the power system on dynamic system simulation of the heat-engine plant.

An execution of a target software program that causes a particular bug to manifest itself is generated. A target software program is received. A bug report generated by an execution of the target software program is received. The bug report describes a particular bug within the target software program. A bug type of the particular bug is received. A synthesized execution file is generated based on the target software program, the bug report, and the bug type. The synthesized execution file specifies an execution of the target software program that causes the particular bug to manifest itself.

The invention provides a control method for coordination and automatic power generation of a coal quality self-adaptive thermal power generating unit. The method comprises the following steps of: 1, compressively determining the coal quality according to parameters including first-level pressure of a steam engine, drum pressure, coal feed, unit load and the like; 2, by the determined coal quality, performing the coal quality self-adaptive control over main control systems of fuel, coordination, air delivery and the like; 3, by core control strategies of boiler load commands, main steam pressure settings, a coal quality self-checking positive load upper limit and the like, realizing the control over the coal quality self-adaptive coordination and automatic power generation of the thermal power generating unit; and 4, realizing the automatic safe operation of the thermal power generating unit by improving safety locking conditions of the thermal power generating unit. The method has the following obviously advantages that: under a fluctuating condition of the coal quality of the thermal power generating unit, the automatic power generation and the coordination control of the thermal power generating unit are unnecessarily intervened by people, and the scheduling requirements are still met; and compared with the conventional control method, the control method of the invention has the advantages that: the accuracies of the main controlled parameters of the thermal power generating unit are further improved; and simultaneously, the automatic power generation control indexes and the safety and the economy of the thermal power generating unit are enhanced.

The exemplary embodiments described herein are related to techniques for automatically generating narratives about data based on communication goal data structures that are associated with configurable content blocks. The use of such communication goal data structures facilitates modes of operation whereby narratives can be generated in real-time and / or interactive manners.

The exemplary embodiments described herein are related to techniques for automatically generating narratives about data based on communication goal data structures that are associated with configurable content blocks. The use of such communication goal data structures facilitates modes of operation whereby narratives can be generated in real-time and / or interactive manners.

A method and apparatus for automatic gain control of a receiver provides compensation of gain control operations for received signal disruptions. In one embodiment, an automatic gain control circuit remembers control state information from a time just before a given disruption, and uses it to reset the automatic gain control circuit at the end of the disruption, or to maintain the automatic gain control circuit during the disruption. The remembering function may be triggered, such by detecting an impending disruption, or done periodically at a high enough update rate that the remembered information is always current with respect to any given disruption. Thus, an exemplary automatic gain control circuit may generate a receiver gain control signal by filtering received signal power measurements, and compensate the generation of that gain control signal by capturing filter state information just prior to signal disruptions. Compensation may comprise resetting or freezing the filter.

The invention relates to the field of electric power systems, and particularly to a diversified energy automatic generation control method considering wind power acceptance. The method comprises the following steps: classifying units according to different AGC adjustment performances and unit types, and dividing load changing tendencies (rising / declining / stable) by combining with a load prediction result; calculating an area control error ACE of a current region, and defining a zone (dead zone / help zone / secondary emergency zone / emergency zone) which the area control error ACE of the current region belongs to; and adopting different ACG adjustment tactics according to the differences of the load tendencies and ACEs. The method conducts classification on all units; the units match with each other to carry out the water-fire-wind combined automatic generation control; the frequency adjustment ability of a system is fully excavated to lower the frequency regulation reserve of the system; and the purpose of more accepting the wind power output is realized while the control quality is ensured.

The invention discloses a coordination AGC (Automatic Generation Control) control method of an interconnected network, comprising the following steps of: providing a unified coordination AGC control method of an interconnected network for rapid development of power generation in China and the requirement of access consumption; making specific technical requirements on the control body, balance manner, adjustment resource, safety restriction and communication transmission of AGC control between the interconnected network areas; providing two specific realizing methods for unified coordination control, i.e., the control mode of total network single machine and the control mode of dispatching equivalence; and describing the area modeling, data uploading, calculating distribution, instruction issuing, and the like in the dispatching coordination control. The invention makes full use of various adjusting resources and consumes the impact triggered by wind power wave in the range of the total network, thereby improving the recovery ability of the electrical network for resisting the wind power fault power deficiency and further effectively exerting the potentiality of AGC coordination control of the total network.

An automatic gain control (AGC) method and circuit (10) within a receiver uses a digital state machine (26) to implement the AGC function. independent from interaction with a host processor (36) and for multiple modulation protocols without duplicating circuitry. Modulation protocol and parameters for any of various gain responses are stored in a register (29). Multiple states, each corresponding to a predetermined range of RF input signal strength, are stored in the register. Each state contains parameters that determine a gain control signal for controlling a variable gain amplifier (16). The states are independent and may be selectively disabled to create asymmetric responses. Within any state, an adaptable number of iterations may be set to implement a different update rate or step size after a predetermined number of closed loop gain change iterations has not resulted in a transition to a state that represents a desired output gain.

An automatic operation vehicle control apparatus includes a contact detecting unit, an override detecting unit, and an automatic operation control unit. The contact detecting unit detects the presence of contact of a hand or hands of a driver with a steering wheel of a vehicle. The override detecting unit detects the presence of override on the steering wheel by the driver on the basis of the result of the detection by the contact detecting unit. The automatic operation control unit switches the operation mode at least including the automatic operation and the manual operation of the vehicle on the basis of the result of the detection by the override detecting unit.

A vital radio based automatic train control system that will interface seamlessly with existing onboard ATC equipment via existing track receiver inputs or directly. The invention provides a means of extending ATC signal territory with reduced equipment installation as compared to traditional cab or wayside based ATC. The invention can be used to reduce train braking distances and reduce headway. Furthermore, the radio cab signal can be used for additional purposes including but not limited to wayside equipment monitoring and rolling equipment monitoring.

An automatic generation control (AGC) augmentation system and method for wind power plant integration for controlling the power contribution to a grid by the wind plant is disclosed that provides for the calculation of the area control error (ACE) by actively communicating to the wind plant ramp rate limits and curtailment requests contributing to the ACE calculation. The augmented control of the ACE minimizes the amount of lost energy production by the wind plant.

A system and method for improving the traction of a vehicle uses weight distribution control to improve wheel to driving surface friction. A driven axle and a non-driven axle support a vehicle load through adjustable suspension members. The suspension members are, for example, air bags. Actuators and controllers adjust the suspension members in a selectable predetermined manner. The selection can be based on operator preference, vehicle operating mode, or a sensed loss of traction. The driven axle carries a drive axle maximum rated load in order to maximize drive wheel traction at all times.

A method and a device for search engine optimization, that receives an identifier that identifies a domain, one or more keywords for analysis relative to a search engine, and search engine usage data, for each received keyword, gathering search engine results data, for at least one received keyword, mapping the at least one keyword to at least one web page within the identified domain, said mapping based on at least one of said search engine usage data and said search engine results data, and for at least one of the received keywords, generating at least one instruction to modify a web page element in a web page to which the at least one received keyword is mapped.

The invention relates to the field of the renewable energy with grid-connected operating, in particular to a design method of an automatic generation control model under an intermittent energy grid-connection. The design method of the automatic generation control model under the intermittent energy grid-connection includes the steps of building second-dimensional disturbance source of time-amplitude disturbed by grid-connected intermittent energy, analyzing the power fluctuation feature of a grid, determining a distribution scheme for an automatic generation control (AGC) system assembly, determining the size and the type of the spare power supply of the AGC system, making a control strategy for the AGC system, selecting frequency deviation coefficient and determining the design parameter of automatic generation control model. The design method of the automatic generation control model under the intermittent energy grid-connection relates to the influences of a large-scale wind power and a solar photovoltaic power to a secondary frequency modulation of the power grid, can build an automatic generation control model and the parameter on the basis of the influence, and therefore effectively copes with an intermittent power disturbance of the wind power and the photovoltaic power supply, enhances the secondary frequency modulation effect of the power grid under the intermittent energy power supply fluctuation, and improves the acceptance ability of the power grid for renewable energy.

An automatic gain control system combining both analog and digital gain units, both controlled by a common digital control system. The overall system gain settings are selected by a combination of analog gain settings and digital gain settings. The number of analog gain settings is less than the total number of system gain settings, so that the board or chip area required for the analog gain settings is reduced, while sufficient range is provided to maintain a good signal to noise ratio from an A / D converter. When a required gain adjustment exceeds one step of the analog gain stage, the system simultaneously adjusts the analog gain and the digital gain unit to provide a smooth transition.

A parking assist system for guiding a vehicle under automatic steering control from a predetermined step position via a turning-direction switching position to a parking target position. With this parking assist system, based upon an operation of a steering wheel by a driver at the predetermined stop position, a parking mode and a parking target position corresponding to that parking mode are determined. And, regardless of the amount of the operation of the steering wheel given at the time of the determination of the parking mode, the vehicle is guided with a correction such that a deflection angle of the vehicle relative to the parking target position may be a predetermined deflection angle, at a corrected switching position nearby the switching'position.

A system for automatic generation control in a wind farm is provided. The system includes a wind farm controller for controlling the plurality of energy storage elements. The wind farm controller receives an automatic generation control set point from an independent system operator, generates a farm-level storage power set point for the wind farm based on the automatic generation control set point, generates individual storage power set points for the plurality of energy storage elements based on states of charge of the respective energy storage elements, and controls the plurality of energy storage elements based on the individual storage power set points for dispatching storage power to perform automatic generation control.

The invention discloses an automatic generation method for routes and a device thereof, which are applied to a dynamic virtual private network (DVPN) comprising a VPN address management (VAM) Server and VAM Clients. The method comprises the steps that a login request is sent to the VAM Server by one VAM Client, and a private network address and the corresponding network segment of the VAM Client, which are carried in the login request, are obtained by the VAM Server; and when acknowledgement information responded by the VAM Server is received by the VAM Client, private network addresses and the corresponding network segments of other already-registered VAM Clients are obtained by the VAM Client from the VAM Server, and routes of the other already-registered VAM Clients are generated according to the obtained private network addresses and the corresponding network segments of the other already-registered VAM Clients. By adopting the automatic generation method for the routes, the route of each node in the DVPN can be automatically generated, and therefore the route generation efficiency of the DVPN is improved.

The invention discloses a hydropower station AGC active allocation method based on a unit commitment output model. A unit AGC control module receives AGC active allocation values of a whole station and compares the values with an operation area given by a unit commitment output model module, an AGC allocation process is started to acquire a single unit AGC active allocation value input into each AGC unit, and the allocation value is issued to the unit. The method solves the problems of active power allocation, avoidance of a hydropower station unit vibration area (or prohibited operation area), compatibility of primary frequency modulation and the like, functional partitioning, parameter arrangement and strategy design are performed on automatic power generation active control of the hydropower station, and functional blocks form an organic whole through data exchange and strategy cooperation.

The invention relates to an active steering system combined with an electrical power-assisted steering function and a control method thereof, belonging to the field of vehicle steering systems. The system sequentially comprises a steering wheel, a steering input shaft, a planetary gear mechanism, a steering output shaft, a steering engine, a steering tie rod, a steering motor, a steering wheel angle sensor, a yaw velocity sensor, a lateral acceleration sensor and an ECU performing automatic steering control. The system is characterized by further comprising a steering wheel torque sensor mounted on the steering input shaft, a turbine worm retarding mechanism connected with the pinion of the steering engine, and a power-assisted motor connected with the turbine worm retarding mechanism; the ECU further receives the signal of the steering wheel torque measured by the steering wheel torque sensor and the speed signal acquired by a CAN bus so as to perform the steering system assistance and the return control as well as implement the electrically-assisted steering function. The system can improve the operation stability of the whole vehicle according to the operation condition of the vehicle, improve the road-feel of drivers, and ensure the vehicle to have stronger returnability.

A special drive system that provides automatic and uniform application control of granular materials. It provides an automatic application control of a granular material from a granular material spreader and is comprised of (a) at least one electric motor for driving the conveyor and spinner at a speed, the said speed which determines a rate of discharge of the granular material; (b) a power source for the motor; (c) a means for controlling the power from the power source to the at least one motor; (d) a means for inputting a signal to the means for controlling the power; (e) a wiring harness with control and power electrical connectors; and (f) a means to mechanically mount the special drive system to the grain spreader wherein the result of the system is an accurately controlled rate of discharge and hence dispensing of the granular materials.

An energy storage device system for a primary frequency modulation and automatic generation control (AGC) auxiliary regulation technology comprises a power generation set, a transformer, a power grid, a DC-AC converter and energy storage battery packs and is characterized in that a multi-port DC-DC converter is also arranged, so that connection ports of a plurality of energy storage battery packs are connected with respective port of the DC-DC converter, and at least one supercapacitor is also connected with the respective port of the DC-DC converter; and moreover, a load allocation system is used for receiving a dispatched AGC instruction or forming a load instruction according to a frequency of the power grid, the instruction is divided into two paths, one path passes through an energy management system to be connected with the multi-port DC-DC converter and the DC-AC converter, and the other path is connected with a distributed control system (DCS) and digital electric hydraulic (DEH) control system of the generation set to control the power generation set to work. Therefore, the peak load regulation capability of a power system can be improved, the primary frequency regulation ability and the AGC response capability of a coal-fired unit are improved, the stable running of a power plant is ensured, and energy is saved.

The invention relates to a FPGA (field programmable gate array) based digital AGC (automatic gain control) system and method of an ultra-short wave radio set. An RF (radio frequency signal) IN of a receiver is sent to a digital attenuator I to achieve an IF (intermediate frequency) signal through a mixer. One part of the IF signal enters a digital attenuator II, and the other part of the IF signal enters a detector for the detection. An IF-RSSI (received signal strength indicator), received by the detector, is converted into a digital signal by an A / D (analog / digital) converter and entered the FPGA. The signal processing is performed to the FPGA by adopting the sliding window smoothing algorithm to acquire average value of the IF signal. The FPGA judges according to the IF-RSSI. The digital attenuator I and the digital attenuator II are controlled through RFAGC (radio frequency automatic gain control), IFAGC 1(intermediate frequency automatic gain control) and IFAGC2, and a variable gain amplifier is controlled through an SPI interface to achieve constant output of the IF signal. By the use of the FPGA-based digital AGC system and method, automatic gain control on the RF signal reception is achieved within a wide dynamic range, thus the IF signal is maintained within a stable range, and smooth output of the IF signal is realized.

The invention discloses a method for participating in automatic generation control by controllable loads. Aiming at the conditions of increased adjustment complexity of a power grid and more diversified regulation and control means caused by the novel controllable loads in the power grid, the scattered controllable loads are aggregated and are enabled to be equivalent to virtual adjustable units whose outputs are negative values, parameters including an adjusting threshold and an adjusting range thereof are automatically calculated, the controllable loads are brought into a conventional automatic generation control system and participate in the adjustment of the power grid with other energies together, the automatic generation control is developed towards automatic power generation and consumption combined control, centralized cooperative control of the adjustable units of the whole grid is realized, the comprehensive regulation and control effect of the power grid is achieved to the maximum, and technical means is provided for interaction of the energies, the grid, and the loads.