Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
03/2014
03/19/2014EP2707934A2 Control system for photovoltaic power plant
03/19/2014EP2707933A2 High voltage energy harvesting and conversion renewable energy utility size electric power systems and visual monitoring and control systems
03/19/2014EP2707932A1 A method in a controller controlling a dynamic compensator, a controller, computer programs and computer program products
03/19/2014CN203491937U Motor driving system of oil pumping unit
03/19/2014CN203491921U Active and reactive dispatchable control device of distributed photovoltaic power station
03/19/2014CN203491917U Reusable direct current ice melting device
03/19/2014CN203491916U Generator electric energy regeneration utilization device
03/19/2014CN203491794U Control system for micro-grid system
03/19/2014CN203491736U Emergency power supply device
03/19/2014CN203491720U Wind and solar generating electric control system
03/19/2014CN203491719U Thermal electric power system
03/19/2014CN203491718U Multi-voltage source multi-microgrid system framework
03/19/2014CN203491717U Distributed grid-connected and off-grid photovoltaically-generated power and gas-generated power complementation power generation apparatus
03/19/2014CN203491716U A control system suitable for a three-phase grid-connected wind-driven generator
03/19/2014CN203491715U A grid-connected off-grid integrated device for a microgrid wind-driven generator
03/19/2014CN203491714U A control system suitable for a three-phase wind-driven generator
03/19/2014CN203491713U A control system suitable for a three-phase four-wire wind-driven generator
03/19/2014CN203491712U Isolated network operation and switching detection structure for photovoltaic power generation system
03/19/2014CN203491711U Distributed power generation grid-connected control system
03/19/2014CN203491710U Multi-circuit DC emergency power modulating system based on PMU
03/19/2014CN203491709U Microgrid framework improving robustness
03/19/2014CN203491708U AC-DC intelligent allocating energy-storage current commutation apparatus
03/19/2014CN203491707U Energy storage system based on cascade utilization of power battery
03/19/2014CN203491706U Household charging pile energy supply system
03/19/2014CN203491705U Low-voltage double-capacity capacitor
03/19/2014CN203491704U Low-voltage intelligent reactive automatic compensation apparatus
03/19/2014CN203491703U Reactive compensation switch cabinet
03/19/2014CN203491702U Intelligent dynamic reactive power compensator
03/19/2014CN203491701U Harmonic-resistant intelligent integrated power capacitor
03/19/2014CN203491700U Intelligent integrated power capacitor
03/19/2014CN203491699U Active-filter main-power unit
03/19/2014CN203491698U Low-voltage distribution cabinet having function of treating power grid harmonic waves
03/19/2014CN203491697U Electric system
03/19/2014CN203491560U Combined unit type low voltage reactive power compensation device
03/19/2014CN203491063U Transformer used in cooperation with high-voltage large-power static var generator
03/19/2014CN103650320A Operating method for an inverter and network fault-tolerant inverter
03/19/2014CN103650319A Method for energizing a chain-link converter, controller, computer programs and computer program products
03/19/2014CN103650291A Power supply system
03/19/2014CN103650286A Power management system comprising a power source, a source of renewable energy, and a power converter
03/19/2014CN103650285A System and method for integrating and managing demand/response between alternative energy sources, grid power, and loads
03/19/2014CN103650284A Data transmitting method, data transmitting apparatus, and energy storage system including the same
03/19/2014CN103650283A Energy storage arrangement and alternating load consumer
03/19/2014CN103650282A A method in an electric power system, controller, computer programs, computer program products and electric power system
03/19/2014CN103650281A Centralized management of the supply of power to a plurality of local power networks
03/19/2014CN103647500A Motor speed-regulation system energy-saving controller based on super-capacitor energy storage and control method
03/19/2014CN103647470A Three-phase NPC grid-connected inverter based on repeated control
03/19/2014CN103647467A Particle swarm algorithm based VSC multi-target optimization direct power control method under imbalanced electrical network
03/19/2014CN103647466A Particle swarm algorithm based VSC multi-target optimization vector control method under harmonic wave electrical network
03/19/2014CN103647453A CCM-based micro inverter and control method thereof
03/19/2014CN103647442A Pre-charging loop and power generating system
03/19/2014CN103647355A Hybrid energy storage system topological structure for microgrid power smooth control
03/19/2014CN103647351A Multi-agent and heterogeneous communication technology based micro-grid intelligent measuring and controlling terminal and method
03/19/2014CN103647345A Micro source controller and method for realizing grid-connected and off-grid control
03/19/2014CN103647306A Automatic quasi-synchronization closing loop for preventing generator nonsynchronous closing
03/19/2014CN103647305A Parallelization method for black-start sub-systems of power grid without external support
03/19/2014CN103647304A Parallelization method for black-start sub-systems of power grid with external support
03/19/2014CN103647303A Double-feed wind power current transformer Crowbar protection circuit and control method
03/19/2014CN103647302A Multi-sub microgrid-contained mixed microgrid system and control method thereof
03/19/2014CN103647301A A ship power station parallel operation and protection analogue device
03/19/2014CN103647300A On-line connection/disconnection control method for extra-high voltage engineering converter
03/19/2014CN103647299A A controlling method of online switching on and off a parallel high-voltage DC power transmission system current transformer
03/19/2014CN103647298A Full-current composite high-voltage direct current transmission system
03/19/2014CN103647297A Wind-solar complementary power generation distributed energy storage control circuit
03/19/2014CN103647296A Microgrid power balance control method
03/19/2014CN103647295A Micro electrical network energy storage sectional type emergency frequency modulation control method
03/19/2014CN103647294A Mountain excavating method and mountain excavating system based on smart power grids
03/19/2014CN103647293A Low-voltage transformer area working condition monitoring and three-phase load balancing automatic adjusting system
03/19/2014CN103647292A Microgrid power smooth control method based on hybrid energy storage system
03/19/2014CN103647291A Control method and device for reactive compensation for power distribution network
03/19/2014CN103647290A Prefabricated cabin type high-voltage reactive compensation device and reactive supplementation method
03/19/2014CN103647289A Capacitance-continuously-adjustable power capacitor control method and device
03/19/2014CN103647288A Chain-type SVG power submodule interface device
03/19/2014CN103647287A Dynamic voltage reactive compensation method
03/19/2014CN103647286A Modularization multi-level converter island switching control method
03/19/2014CN103647285A Two-port Thevenin equivalent based loop closing voltage control feasible-region determining method
03/19/2014CN103647284A Voltage stability prediction method for solving single-time cross-section problem
03/19/2014CN103647283A Solar power grid and municipal power grid no-countercurrent combination power supply control system and method thereof
03/19/2014CN103647282A Double-feed wind generating set low-subharmonics current inhibition method
03/19/2014CN103647281A Harmonic-wave compensation system based on V2G
03/19/2014CN103647280A Intelligent two-circuit feeding connection controller and control method
03/19/2014CN103647279A Plant wiring information based anticipatory fault set generation method
03/19/2014CN103647278A High-capacity unified power disturbance generating device
03/19/2014CN103647277A Searching method based on optimized electric power system first-order modal resonant point
03/19/2014CN103647276A Electric energy quality early warning system and method thereof
03/19/2014CN103647275A Transformer area power supply method capable of meeting seasonal electricity utilization requirement
03/19/2014CN103647274A Micro-grid system being capable of grid-connected and off-grid operation, and energy control method
03/19/2014CN103647273A Power distribution network structure on-line loop closing flow optimization method
03/19/2014CN103647272A Alternating-current and direct-current power grid static equivalence method suitable for cascading failures
03/19/2014CN103645404A Micro-grid islanding detection method
03/19/2014CN103151147B Isolation transformer for filter circuit and filter circuit system
03/19/2014CN102790401B Method for inhibiting fluctuation of random power of alternative-current junctor
03/19/2014CN102780234B High-voltage electric debugging method for power generation project
03/19/2014CN102611143B Method for controlling grid-connected current of three-phase grid-connected inverter
03/19/2014CN102611134B Network voltage phase-frequency tracking method based on capturing unit
03/19/2014CN102611128B Direct-current power modulating method for high-voltage direct-current power transmission system
03/19/2014CN102522769B Hybrid excitation wind power generation system with wide wind speed range
03/19/2014CN102427266B Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof
03/19/2014CN102324744B Distribution network power state calculating method based on breadth-first traversal
03/19/2014CN102246379B A method of upgrading a plant for transmitting electric power and such a plant
03/19/2014CN102163847B Low-pressure reactive compensation filtering device for ore-smelting furnace
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