Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
05/2011
05/25/2011CN201846086U Complete set of dynamic reactive power compensation and filter device
05/25/2011CN201846085U Hybrid electrical energy quality governance device
05/25/2011CN201846084U Spaced stem used for parallel reactor
05/25/2011CN201846083U Low-voltage reactive power compensation device
05/25/2011CN201846082U Working condition monitoring device, capacitor and reactive power factor compensating device
05/25/2011CN201846081U Disaster-prevention reactive compensation device
05/25/2011CN201846080U Intelligent harmonic elimination controller
05/25/2011CN201846079U Modular filtering device
05/25/2011CN201846078U Staggered one-cycle control compensating current generator
05/25/2011CN201846077U Filter
05/25/2011CN201846076U LCL (lower control limit) filter of special frequency converter for mine hoist
05/25/2011CN201846009U Comprehensive control cabinet for transformer
05/25/2011CN201844350U Street lamp system adopting solar and wind power grid integration centralized power supply
05/25/2011CN1926742B Method for operating electric generator frequency-converter and wind-power turbomachine having electric generator operated by the method
05/25/2011CN102077454A Battery energy source arrangement and voltage source converter system
05/25/2011CN102077437A Method and system for operating a wind power plant comprising a number of wind turbine generators
05/25/2011CN102077436A Method for production of an oscillating signal and electrical protection - or measurement instrument having an oscillation identification device
05/25/2011CN102075014A Large grid real-time scheduling method for accepting access of wind power
05/25/2011CN102075006A Village supercharger
05/25/2011CN102074974A Device and method for eliminating grid-connected current zero-crossing distortion of unipolar control single-phase grid-connected inverter
05/25/2011CN102074973A Hosting mode-based distributed power supply synchronizing method and device
05/25/2011CN102074972A Energy feedback type traction power supply device with reactive compensation function and control method thereof
05/25/2011CN102074971A Feedback load energy-saving circuit for aging test and control method thereof
05/25/2011CN102074970A Energy management system and grid-connected energy storage system including the energy management system
05/25/2011CN102074969A Wind power plant and operation method for same
05/25/2011CN102074968A Photovoltaic miniature grid-connected inverter control device and control method thereof
05/25/2011CN102074967A Method for controlling energy storage type wind power station with synchronization property
05/25/2011CN102074966A System and method for combining distributed generation and distribution network in distribution network terminal
05/25/2011CN102074965A Device and method for reactive power compensation and harmonic suppression of grid-connected potovoltaic system
05/25/2011CN102074964A Method for rapidly analyzing reactive power balance and critical power flow of power system
05/25/2011CN102074963A Intelligent reactive compensation comprehensive control device
05/25/2011CN102074962A Combination switch type step controllable shunt reactor
05/25/2011CN102074961A Leveled controllable parallel reactor device configured by series public reactor
05/25/2011CN102074960A Thyristor valve control type controllable shunt reactor device adopting valve series type configuration
05/25/2011CN102074959A Thyristor valve-controlled controlled shunt reactor device
05/25/2011CN102074958A Thyristor valve controlled type controllable paralleling reactor device configured with parallel valve branches
05/25/2011CN102074957A Primary frequency regulation and automatic generation control (AGC) load regulation coordinated control method
05/25/2011CN102074956A Power grid risk management method and system
05/25/2011CN102074955A Method based on knowledge discovery technology for stability assessment and control of electric system
05/25/2011CN102074954A Comprehensive energy-conservation evaluation and decision-making method for urban and rural distribution network
05/25/2011CN102074953A Double-purpose micro-grid system structure used for power supply and experiment
05/25/2011CN102074952A Independent micro-grid system
05/25/2011CN102072778A System and method for determining the temperature of a permanent magnet in a machine
05/25/2011CN101609993B Self-adaptive leading time realizing method for synchronization function of measure and control device
05/25/2011CN101604848B Modified fuzzy sliding mode controlling method of monopole three-phase photovoltaic grid-connected system
05/25/2011CN101604847B Automatic switching method of automatic synchronized grid-connection device
05/25/2011CN101478161B Active electric filter compensation current control method under non-ideal voltage
05/25/2011CN101388564B Combined power supply device and operating method thereof
05/25/2011CN101363406B Wind power generation system with multi-blower fans connection in parallel
05/25/2011CN101345508B Controllable afterflow method of magnetic controlled shunt reactor
05/25/2011CN101340098B Dynamic reactive compensating method
05/25/2011CN101299546B Solar power plant
05/25/2011CN101291129B Wind power electricity generating apparatus
05/25/2011CN101286723B Control method for ultra-high/extra-high voltage magnetic control type parallel reactor
05/25/2011CN101277017B Method for regulating static reactive compensator of power transmission system
05/25/2011CN101188359B Distribution network reliability evaluation method based on failure transfer feature of components
05/25/2011CN101174759B Integrated monitoring apparatus for electrical power distribution
05/25/2011CN101091057B Wind park with robust reactive power adjustment system and method for the operation thereof
05/25/2011CN101068082B Comprehensive compensating device and method
05/25/2011CN101044663B Device for the safe isolation of a nuclea power plant from a power grid, power plant equipment and industrial equipment
05/25/2011CN101009475B Wind turbine dump load system and method
05/24/2011US7949615 System and method of controlling delivery and/or usage of a commodity
05/24/2011US7948116 Method and apparatus for controlling a supply current for a circuit or a plurality of circuit blocks
05/24/2011US7948115 Controller for a domestic appliance and associated method
05/24/2011US7948114 Apparatus and method for providing a power switch array with adjustable current rating power switches
05/19/2011WO2011059425A2 Improved internal electrification scheme for power generation plants
05/19/2011WO2011058412A1 Power distribution system
05/19/2011WO2011058405A1 Power distribution system
05/19/2011WO2011058170A1 Method and device for operation of a wind power plant
05/19/2011US20110118891 Grid responsive control device
05/19/2011US20110115302 System and method for synchronizing an auxiliary electrical generator to an electrical system
05/19/2011US20110115301 Method and area electric power system detecting islanding by employing controlled reactive power injection by a number of inverters
05/19/2011US20110115293 Method for replacing a load control device of a load control system
05/19/2011US20110115292 Power operation system, power operation method and photovoltaic power generator
05/19/2011DE102009042865A1 Verfahren und Vorrichtung zur automatischen Stabilisierung eines Netzes die für elektrische Energieversorgung mit zumindest einem Stromrichter Method and apparatus for automatic stabilization of a network for the supply of electrical energy to at least one power converter
05/18/2011EP2321885A2 Systems and methods for conditioning and controlling power usage
05/18/2011EP2321855A1 An electrical power distribution installation
05/18/2011EP2223410B1 Modelling a power production network for distributing the load
05/18/2011CN201839257U Frequency-conversion and reactive-compensation comprehensive device
05/18/2011CN201839200U Power factor correction circuit with variable duty cycle control
05/18/2011CN201839050U Electric vehicle charging station with energy storage device
05/18/2011CN201839018U Large-scale wind power independent transmitting system based on synthesis reactive power compensation technology
05/18/2011CN201839017U Wind and solar temperature difference hybrid power generation combined power grid
05/18/2011CN201839016U Compact arranging structure for wind driven generator and networking box type transformer
05/18/2011CN201839015U Power converter component for solar power station
05/18/2011CN201839014U Renewable electricity feedback device of lifter
05/18/2011CN201839013U Device for restarting high-voltage frequency converter in instant power failure of power grid
05/18/2011CN201839012U Startup charging and shutdown discharging circuit of static var generator
05/18/2011CN201839011U SVG (static var generator) static reactive compensation device automatically controlling shunt capacitor switching
05/18/2011CN201839010U Intelligent energy-saving environment protection device
05/18/2011CN201839009U Reactive dynamic voltage compensator
05/18/2011CN201839008U Disaster-preventive reactive power compensation controller
05/18/2011CN201839007U Remote control automatic phase selecting switch
05/18/2011CN201839006U 电力品质控制系统装置 Power quality control system devices
05/18/2011CN201839005U Active power filter with hybrid structure
05/18/2011CN201839004U 油井控制箱 Well Control Box
05/18/2011CN201839003U Following-setting TSC resonance prevention type complete equipment for arc extinction and grounding compensation
05/18/2011CN201836793U LED roadway illumination system with grid-connected power supply
05/18/2011CN102067430A A voltage source converter
05/18/2011CN102067408A Power control system for distributing power to power demanding facilities