A kind of station electricity consumption wiring system for generation of electricity by new energy station
Technical field
The utility model relates to a kind of station power use system, is specifically related to a kind of station electricity consumption wiring system for generation of electricity by new energy station.
Background technology
Solar energy is inexhaustible new forms of energy, and wind energy is clean reproducible new forms of energy.China is vast in territory, and solar energy and wind energy deposit are all very abundant.Existing energy resource structure is taking thermal power generation as master, water generating are as auxiliary, and along with sustainable strategy development, the rational and efficient use of green cleaning new energy is more and more subject to extensive concern, will put into operation in increasing green cleaning new energy power station.
Generation of electricity by new energy station (wind power generation, photovoltaic generation) electrical system architecture is simple, its station power load quantity is few, and the busbar voltage of confluxing for generating electricity is established one-level conventionally, stands with the power supply of the desirable use of power supply from this bus, say from validity, single telegram in reply source only can be provided.But site, generation of electricity by new energy station remoteness, few man on duty, stands with power supply only for power supply in Dan Huizhan cannot ensure power station safe and reliable operation.
Utility model content
The purpose of this utility model is to provide a kind of station electricity consumption wiring system for generation of electricity by new energy station of effective raising power station safe operation reliability.
For achieving the above object, the utility model by the following technical solutions: comprise main power source, stand-by power supply, stand by section, described main power source successively transformer docking station for, stand with a section main power source lead-in circuit breaker, stand and use section; Described stand-by power supply is spare transformer, the use of standing a section stand-by power supply lead-in circuit breaker, the use of standing section for docking station successively; Described station is with being connected by power transfer device between section main power source lead-in circuit breaker and station section stand-by power supply lead-in circuit breaker; Described station connects some power consumption equipments by circuit breaker downstream by section.
Further, described main power source is power station bus rod, and described stand-by power supply is other transformer stations.
Further, described transformer for station, stand with spare transformer voltage change ratio be 35/0.4kV or 10/0.4kV.
Further, described power transfer device is automatic switching device of standby power supply or double power supply automatic switching switch device.
Further, described station is construction transformer with spare transformer.
Compared with prior art, the utility model is by arranging main power source and stand-by power supply, make to switch between main power source and stand-by power supply by power transfer device, switch in time stand-by power supply when the mains power failure moment, fault can be switched back main power source in time after getting rid of, ensure the reliability of power station safe operation, can normally have been worked in power station.
Further, be automatic switching device of standby power supply or double power supply automatic switching switch device ATS by power transfer device is set, ensure the automatic switchover of two circuit breakers.
Further, by transforming construction transformer as spare transformer, effectively saved investment.
Brief description of the drawings
Fig. 1 is the utility model winding diagram;
Wherein: 1 is main power source; 2 is stand-by power supply; 3 is section for station; 4 is station transformer; 5 is station spare transformer; 6 is section main power source lead-in circuit breaker for station; 7 is section stand-by power supply lead-in circuit breaker for station; 8 is power transfer device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail: referring to Fig. 1, comprise main power source 1, stand-by power supply 2, stand by section 3, main power source is taken from the our station bus confluxing that generates electricity, middle pressure (35kV or 10kV) system, stand-by power supply is drawn and is connect a reliable source of power (being generally 35kV or 10kV) by near transformer station, and described main power source 1 is transformer 4, the use of standing a section main power source lead-in circuit breaker 6, the use of standing section 3 for docking station successively; Described stand-by power supply 2 is spare transformer 5, the use of standing a section stand-by power supply lead-in circuit breaker 7, the use of standing section 3 for docking station successively; Described station is with being connected by power transfer device 8 between section main power source lead-in circuit breaker 6 and station section stand-by power supply lead-in circuit breaker 7, and power transfer device 8 adopts automatic switching device of standby power supply or double power supply automatic switching switch device ATS; Described station connects some power consumption equipments by circuit breaker downstream by section 3.Stand with transformer 4, stand with spare transformer 5 voltage change ratios be 35/0.4kV or 10/0.4kV.
Stand with spare transformer 5 can by construction transformer transform.Generation of electricity by new energy stands in first stage of construction and is typically provided with construction transformer, and its power supply draws near transformer station, and for power supply for construction, after power station is built up, construction transformer is removed.For reducing investment outlay, rationally utilize existing device, when power station is built up, the transformer-supplied of constructing Circuit Retrofit, is connected to 380/220V station and uses PC section, former construction power supply to be station electricity consumption stand-by power supply, and construction transformer continues operation as station with spare transformer.
Main power source: establish a station transformer in standing, voltage change ratio is 35/0.4kV or 10/0.4kV, by main power source lead-in circuit breaker, band 380/220V station PC section.
Stand-by power supply: establish a station spare transformer, voltage change ratio is 35/0.4kV or 10/0.4kV, by stand-by power supply lead-in circuit breaker, band 380/220V station PC section.
When station power use system normally moves, stand by section main power source lead-in circuit breaker 6 closures, stand and disconnect with a section stand-by power supply lead-in circuit breaker 7; In the time that main power source breaks down dead electricity, to stand and disconnect with a section main power source lead-in circuit breaker 6, section stand-by power supply lead-in circuit breaker 7 closures for station simultaneously, stands with section being powered by stand-by power supply.
When main power source recovers when normal power supply, stand and disconnect with a section stand-by power supply lead-in circuit breaker 7, section main power source lead-in circuit breaker 6 closures for station, stands and use a section switchback main power source to power simultaneously.
Stand with adopting power transfer device 8 to ensure circuit breaker automatic switching between section main power source lead-in circuit breaker 6 and station section stand-by power supply lead-in circuit breaker 7.Conventionally can adopt automatic switching device of standby power supply to realize this function, require high and require station section main power source lead-in circuit breaker 6 and station with a section power station for stand-by power supply lead-in circuit breaker 7 switchings in parallel for automation, power transfer device 8 also can adopt double power supply automatic switching switch device ATS.
Above content is in conjunction with concrete execution mode further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by submitted to claims.