H
SECTION H — ELECTRICITY
 H02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
 H02J
CIRCUIT ARRANGEMENTS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY (control of a prime-mover/generator combination H02P; interrelated control of several motors H02P; control of high-frequency power H03B; additional use of power line or power network for transmission of information H04B)
 H02J

Note(s)

This sub-class deals with ac or dc mains or distribution networks and also deals with circuit arrangements for battery supplies, including charging or control thereof, or co-ordinated supply from two or more sources of any kind. Control of a single motor, generator or converter of the types covered by sub-classes H01F, H02K, and H02M, is dealt with in sub-class H02P; control of a single motor or generator, of the types covered by sub-class H02N, is dealt with in that sub-class.

 H02J 1/00
Circuit arrangements for dc mains or dc distribution networks
 H02J 1/02
·  Arrangements for reducing harmonics or ripples (in converters H02M 1/00)
 H02J 1/04
·  Constant-current supply systems
 H02J 1/06
·  Two-wire systems
 H02J 1/08
·  Three-wire systems; Systems having more than three wires
 H02J 1/10
·  Parallel operation of dc sources (involving batteries H02J 7/34)
 H02J 1/12
·  ·  Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
 H02J 1/14
·  Balancing the load in a network (by batteries H02J 7/34)
 H02J 1/16
·  ·  using dynamo-electric machines coupled to flywheels
 H02J 3/00
Circuit arrangements for ac mains or ac distribution networks
 H02J 3/02
·  using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
 H02J 3/04
·  for connecting networks of the same frequency but supplied from different sources
 H02J 3/06
·  ·  Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
 H02J 3/08
·  ·  Synchronising of networks
 H02J 3/10
·  Constant-current supply systems
 H02J 3/12
·  using compensating devices to adjust voltage in ac networks
 H02J 3/14
·  ·  by switching loads on to, or off from, network, e.g. progressively balanced loading
 H02J 3/16
·  ·  by adjustment of reactive power
 H02J 3/18
·  Arrangements for adjusting, eliminating, or compensating reactive power in networks (for adjustment of voltage H02J 3/12; use of Petersen coils H02H 1/02)
 H02J 3/20
·  ·  in long overhead lines
 H02J 3/22
·  ·  in cables
 H02J 3/24
·  Arrangements for preventing or reducing oscillations of power in networks (by control effected upon a single generator H02P 9/00)
 H02J 3/26
·  Arrangements for eliminating or reducing asymmetry in polyphase networks
 H02J 3/28
·  Arrangements for balancing the load in a network by storage of energy
 H02J 3/30
·  ·  using dynamo-electric machines coupled to flywheels
 H02J 3/32
·  ·  using batteries with converting means
 H02J 3/34
·  Arrangements for transfer of electric power between networks of substantially different frequency (frequency converters H02M)
 H02J 3/36
·  Arrangements for transfer of electric power between ac networks via a high-tension dc link
 H02J 3/38
·  Arrangements for parallelly feeding a single network by two or more generators, converters, or transformers
 H02J 3/40
·  ·  Synchronising a generator for connection to a network or to another generator
 H02J 3/42
·  ·  ·  with automatic parallel connection when synchronism is achieved
 H02J 3/44
·  ·  ·  with means for ensuring correct phase sequence
 H02J 3/46
·  ·  Controlling the sharing of output between the generators, converters, or transformers
 H02J 3/48
·  ·  ·  Controlling the sharing of the in-phase component
 H02J 3/50
·  ·  ·  Controlling the sharing of the out-of-phase component
 H02J 4/00
Circuit arrangements for mains or distribution networks not specified as ac or dc  [2]
 H02J 5/00
Circuit arrangements for transfer of electric power between ac networks and dc networks (H02J 3/36 takes precedence)
 H02J 7/00
Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
 H02J 7/02
·  for charging batteries from ac mains by converters
 H02J 7/04
·  ·  Regulation of the charging current or voltage
 H02J 7/06
·  ·  ·  using discharge tubes or semiconductor devices
 H02J 7/08
·  ·  ·  ·  using discharge tubes only
 H02J 7/10
·  ·  ·  ·  using semiconductor devices only
 H02J 7/12
·  ·  ·  using magnetic devices having controllable degree of saturation, i.e. transductors
 H02J 7/14
·  for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
 H02J 7/16
·  ·  Regulation of the charging current or voltage by variation of field
 H02J 7/18
·  ·  ·  due to variation of ohmic resistance in field circuit, using resistance switching in or out of circuit step by step
 H02J 7/20
·  ·  ·  due to variation of continuously-variable ohmic resistor
 H02J 7/22
·  ·  ·  due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator
 H02J 7/24
·  ·  ·  using discharge tubes or semiconductor devices
 H02J 7/26
·  ·  ·  using magnetic devices with controllable degree of saturation
 H02J 7/28
·  ·  ·  using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device
 H02J 7/30
·  ·  ·  using armature-reaction-excited machines
 H02J 7/32
·  for charging batteries from a charging set comprising a non-electric prime mover
 H02J 7/34
·  Parallel operation in mains networks using both storage and other dc sources, e.g. providing buffering
 H02J 7/36
·  Arrangements using end-cell switching
 H02J 9/00
Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (with provision for charging standby battery H02J 7/00)
 H02J 9/02
·  in which an auxiliary distribution system and its associated lamps are brought into service
 H02J 9/04
·  in which the distribution system is disconnected from the normal source and connected to a standby source
 H02J 9/06
·  ·  with automatic change-over
 H02J 9/08
·  ·  ·  requiring starting of a prime-mover
 H02J 11/00
Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed, or converted (emergency or standby arrangements H02J 9/00)
 H02J 13/00
Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuit-breaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
 H02J 15/00
Systems for storing electric energy (in chemical form H01M)  [2]
 H02J 15/02
·  in the form of hydraulic energy  [2]
 H02J 15/04
·  in the form of pneumatic energy (accumulators for supplying fluid under pressure F15B 1/04)  [2]