IPC 6 English version H02J !A-H02J 17/00

H02J-H02J01700

SECTION H– ELECTRICITY

H 02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

H 02 J

CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY (power supply circuits for apparatus for measuring X-radiation, gamma radiation, corpuscular radiation or cosmic radiation G 01 T 1/175; for digital computers G 06 F 1/18; for discharge tubes H 01 J 37/248; circuits or apparatus for the conversion of electric power, arrangements for control or regulation of such circuits or apparatus H 02 M; interrelated control of several motors, control of a prime-mover/generator combination H 02 P; control of high-frequency power H 03 L; additional use of power line or power network for transmission of information H 04 B)

Notes

(1)

This subclass covers:

–

ac or dc mains or distribution networks;

–

circuit arrangements for battery supplies, including charging or control thereof, or co-ordinated supply from two or more sources of any kind;

–

systems for supplying or distributing electric power by electromagnetic waves.

(2)

This subclass does not cover:

–

control of a single motor, generator or dynamo-electric converter, of the types covered by subclass H 01 F or H 02 K, which is covered by subclass H 02 P;

–

control of a single motor or generator, of the types covered by subclass H 02 N, which is covered by that subclass.

Circuit arrangements for dc mains or dc distribution networks

Arrangements for reducing harmonics or ripples (in converters H 02 M 1/00)

Constant-current supply systems

Two-wire systems

Three-wire systems; Systems having more than three wires

Parallel operation of dc sources (involving batteries H 02 J 7/34)

Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier

Balancing the load in a network (by batteries H 02 J 7/34)

using dynamo-electric machines coupled to flywheels

Circuit arrangements for ac mains or ac distribution networks

Arrangements for reducing harmonics or ripples (in converters H 02 M 1/00) [3]

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

for connecting networks of the same frequency but supplied from different sources

Controlling transfer of power between connected networks; Controlling sharing of load between connected networks

Synchronising of networks

Constant-current supply systems

for adjusting voltage in ac networks by changing a characteristic of the network load

by switching loads on to, or off from, network, e.g. progressively balanced loading

by adjustment of reactive power

Arrangements for adjusting, eliminating, or compensating reactive power in networks (for adjustment of voltage H 02 J 3/12; use of Petersen coils H 02 H 9/08)

in long overhead lines

in cables

Arrangements for preventing or reducing oscillations of power in networks (by control effected upon a single generator H 02 P 9/00)

Arrangements for eliminating or reducing asymmetry in polyphase networks

Arrangements for balancing the load in a network by storage of energy

using dynamo-electric machines coupled to flywheels

using batteries with converting means

Arrangements for transfer of electric power between networks of substantially different frequency (frequency converters H 02 M)

Arrangements for transfer of electric power between ac networks via a high-tension dc link

Arrangements for parallelly feeding a single network by two or more generators, converters, or transformers

Synchronising a generator for connection to a network or to another generator

with automatic parallel connection when synchronism is achieved

with means for ensuring correct phase sequence

Controlling the sharing of output between the generators, converters, or transformers

Controlling the sharing of the in-phase component

Controlling the sharing of the out-of-phase component

Circuit arrangements for mains or distribution networks not specified as ac or dc [2]

Circuit arrangements for transfer of electric power between ac networks and dc networks (H 02 J 3/36 takes precedence)

Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

for charging batteries from ac mains by converters

Regulation of the charging current or voltage

using discharge tubes or semiconductor devices

using discharge tubes only

using semiconductor devices only

using magnetic devices having controllable degree of saturation, i.e. transductors

for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle

Regulation of the charging current or voltage by variation of field

due to variation of ohmic resistance in field circuit, using resistance switching in or out of circuit step by step

due to variation of continuously-variable ohmic resistor

due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator

using discharge tubes or semiconductor devices

using magnetic devices with controllable degree of saturation

using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device

using armature-reaction-excited machines

for charging batteries from a charging set comprising a non-electric prime mover

Parallel operation in networks using both storage and other dc sources, e.g. providing buffering (H 02 J 7/14 takes precedence) [4]

with light sensitive cells [4]

Arrangements using end-cell switching

Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (with provision for charging standby battery H 02 J 7/00)

in which an auxiliary distribution system and its associated lamps are brought into service

in which the distribution system is disconnected from the normal source and connected to a standby source

with automatic change-over

requiring starting of a prime-mover

11/

Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed, or converted (emergency or standby arrangements H 02 J 9/00)

13/

Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker 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

15/

Systems for storing electric energy (mechanical systems therefor F 01 to F 04; in chemical form H 01 M) [2]

17/

Systems for supplying or distributing electric power by electromagnetic waves [3]