CN109687570A - One kind zero flashes low-voltage distribution system and operating method - Google Patents
One kind zero flashes low-voltage distribution system and operating method Download PDFInfo
- Publication number
- CN109687570A CN109687570A CN201811542418.XA CN201811542418A CN109687570A CN 109687570 A CN109687570 A CN 109687570A CN 201811542418 A CN201811542418 A CN 201811542418A CN 109687570 A CN109687570 A CN 109687570A
- Authority
- CN
- China
- Prior art keywords
- power supply
- switch
- power
- emergency
- source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention discloses one kind zero to flash low-voltage distribution system and operating method, including the first power supply and second source being connected respectively in switchyard two common buses；One end of emergency bus, emergency bus is connected with moving emergency power supply and the first power supply respectively by the first double power supply automatic switching switch；The other end of emergency bus is connected with the static energy storage uninterruptible power supply of user side；And the second double power supply automatic switching switch or solid converting switch being connected with user load.The invention avoids load side double power supply automatic switching switch power switching operations under failure, to solve the problems, such as that load caused by voltage dip flashes in power supply switching, while solving the problems, such as voltage fluctuation.If static energy storage fault of uninterrupted power source or electricity do not obtain power supply supplement before exhausting, right wing power supply will will be switched power supply to by 2# double power supply automatic switching switch, sensitive load caused by voltage dip is had in power supply switching and flashes.
Description
[technical field]
The invention belongs to technical field of power systems, are related to a kind of emergency power system, and especially one kind zero flashes low pressure
Distribution system and operating method.
[background technique]
There is very close connection between low-voltage distribution system and electricity consumption user, therefore can the system healthy run,
It is directly related to the power quality of user.
Low-voltage distribution system common at present mostly uses single channel or supplies power with double circuit, and configures double power supply automatic switching switch
ATS, static state energy storage uninterruptible power supply UPS realize power supply switching and last for short power supply under fault condition, also have configuration to move
Supply vehicle, as interim emergency power supply, these devices although can temporarily restore power supply under certain fault conditions,
The time is needed from having a power failure to restoring electricity, from more than ten seconds to a few houres etc., influences general distribution demand.If in important field
Institute, even very of short duration power failure, also brings along tremendous influence and loss.And various devices do not have complete set
System wiring does not form efficient cooperation for various degrees of failure.
Common load is configured using the emergency service of " dual power supply+double power supply automatic switching switch ATS ", certain common load
Electrical wiring it is as shown in Figure 1.
Double power supply automatic switching switch ATS (Automatic transfer switching equipment) is used primarily in
It is the device for switching by load circuit from an automatic changing-over of power supply to another backup power source in emergency power supply system, is machine
Tool structure, conversion time will cause load power down in 100ms or more.
The common load dual power supply is cut in the case where single channel failure by dual power supply automatically from low pressure difference bus
It changes switch ATS and switches to another way power supply.The configuration of " dual power supply+double power supply automatic switching switch ATS " solves single channel failure
Caused power cut problem, but not can solve power cut problem caused by two-way failure, it can not also resist voltage fluctuation, power supply switching
In have load caused by voltage dip and flash.
The important load relatively low to power reguirements uses " dual power supply+emergency bus+double power supply automatic switching switch
The emergency service of ATS+ moving emergency power supply " configures, and electrical wiring is as shown in Figure 2.
Emergency bus is usually connect with common bus by double power supply automatic switching switch ATS, under normal circumstances dual power supply
Emergency bus is connected to by automatic transfer switch ATS with common bus, with external power supply disjunction.When common bus-bar fault, dual power supply
Emergency bus and common bus breaking are connected to by automatic transfer switch ATS with external power supply.The effect of emergency bus is will to weigh
It wants load to distinguish with common load, in common bus segment fault, is selectively only attached most importance to by moving emergency power supply
Load is wanted to continue to power.All 23 switchgear houses configure emergency bus for demonstration area, and it is female that all important loads access emergency
Line.Emergency bus extends to building exposed wall, the quick case of plugging into of setting, and power supply vehicle of meet an emergency can access in 2 minutes.
When bus-bar fault, passing through emergency bus by power supply vehicle of meet an emergency is the power supply of important based model for load duration." dual power supply+emergency
The emergency service configuration of bus+double power supply automatic switching switch ATS+ moving emergency power supply " solves to stop caused by two-way failure
Electric problem, but voltage fluctuation can not be resisted, load caused by voltage dip, which is had, in power supply switching flashes.
In conclusion needing a set of Fault Isolation time, power supply switching time shorter low-voltage distribution system, including connect
Line form and equipment, to ensure that most sensitive load will not be affected.
[summary of the invention]
The present invention resists voltage fluctuation to meet the moment offer continued power in route power loss, provides one kind
Zero flashes low-voltage distribution system and operating method, and device series connection between emergency bus and load enters between static energy storage not
Power-off source UPS is that " dual power supply+emergency bus+static state energy storage is uninterruptedly electric for the relatively high important load formation of power reguirements
The emergency service of source UPS+ double power supply automatic switching switch ATS+ moving emergency power supply " configures.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
One kind zero flashes low-voltage distribution system, comprising:
The first power supply and second source being connected respectively in switchyard two common buses；
One end of emergency bus, emergency bus is electric with moving emergency respectively by the first double power supply automatic switching switch ATS
Source is connected with the first power supply；The other end of emergency bus is connected with the static energy storage uninterruptible power supply UPS of user side；And
Second double power supply automatic switching switch ATS, user side load pass through the second double power supply automatic switching switch ATS points
It is not connected with static energy storage uninterruptible power supply UPS and second source.
A further improvement of the present invention lies in that:
Moving emergency power supply use power supply vehicle of meet an emergency, power supply vehicle of meet an emergency by quickly plug into case and the first dual power supply it is automatic
Switch switch ATS to be connected.
Moving emergency power supply is using mobile flywheel or diesel-driven generator.
One kind zero flashes low-voltage distribution system, comprising:
The first power supply and second source being connected respectively in switchyard two common buses；
One end of emergency bus, emergency bus is electric with moving emergency respectively by the first double power supply automatic switching switch ATS
Source is connected with the first power supply；The other end of emergency bus is connected with the static energy storage uninterruptible power supply UPS of user side；And
Solid converting switch SSTS, user side load are uninterrupted with static energy storage respectively by solid converting switch SSTS
Power supply UPS is connected with second source.
Itself further improvement is that
Moving emergency power supply use power supply vehicle of meet an emergency, power supply vehicle of meet an emergency by quickly plug into case and the first dual power supply it is automatic
Switch switch ATS to be connected.
Moving emergency power supply is using mobile flywheel or diesel-driven generator.
Solid converting switch SSTS is provided with multiple groups.
Solid converting switch SSTS includes the power switch Q1 and power switch being connected respectively with main power source and backup power source
Q2, main power source and backup power source pass through power switch Q1 respectively and power switch Q2 is connected with sensitive load；Power switch Q1 and
High speed machine is parallel on series thyristor switch TS1 and thyristor switch TS2 between power switch Q2, thyristor switch TS1
High speed machine switch PS2 is parallel on switch PS1, thyristor switch TS2；Thyristor switch TS1 and thyristor switch TS2 it
Between node be connected with sensitive load by power switch Q0.
A kind of zero flashes the operating method of low-voltage distribution system, comprising the following steps:
When main power source generation voltage dip, and temporary decline is more than that sensitive loads operate normally the limit value that can bear
When, solid converting switch SSTS control system issues switching command, high speed machine switch PS1 shutdown, while triggering thyristor and opening
TS1 conducting is closed, electric current is immediately transferred on thyristor；
Then the trigger signal of thyristor switch TS1 is cancelled, thyristor switch TS1 will electric current first time zero passage hereafter
When turn off；Then the thyristor switch TS2 conducting of the triggering other side, backup power source start powering load；
After stablizing, control system issues the order of closure high speed machine switch PS2 again, and thyristor switch TS2 is also at this time
It is being connected, close to zero, closure high speed machine switch PS2 will not generate electric arc for both ends pressure drop, then cancel thyristor switch
The trigger signal of TS2 completes entire handoff procedure.
Itself further improvement is that
When solid converting switch SSTS needs to safeguard, by power switch Q1 or power switch Q2 come to load not
Interruptedly supplying power.
Compared with prior art, the invention has the following advantages:
" dual power supply+emergency bus+static state energy storage uninterruptible power supply UPS+ double power supply automatic switching switch ATS+ of the invention
The emergency service configuration of moving emergency power supply " avoids load side double power supply automatic switching switch ATS power supply switching behaviour under failure
Make, to solve the problems, such as that load caused by voltage dip flashes in power supply switching, while solving the problems, such as voltage fluctuation.But
Emergency service configuration can't ensure to power " zero flashes " completely, because to be built upon static energy storage uninterrupted for the above process
Power supply UPS can continue under the premise of working normally.If static energy storage uninterruptible power supply UPS failure or electricity do not have before exhausting
Power supply supplement is obtained, right wing power supply will will be switched power supply to by 2# double power supply automatic switching switch ATS, is had in power supply switching
Sensitive load caused by voltage dip flashes.
The present invention cuts emergency bus, double power supply automatic switching switch ATS, static energy storage uninterruptible power supply UPS, solid-state
Switch SSTS, power supply vehicle of meet an emergency combination are changed, the high low-voltage distribution system mode of connection of a set of reliability is provided.It answers
Anxious bus extends to building exposed wall, and installation supply vehicle is plugged into case, and access speed is fast, stable connection.Using mobile power vehicle, double
Automatic power switch ATS, in the case where whole external powers equal failure, sustainable power supply.It is uninterrupted using static energy storage
Power supply UPS, solid converting switch SSTS can resist voltage fluctuation, temporarily drop, persistently provide good power quality.Power supply switching
Time is unaffected most sensitive load within 5 milliseconds, realizes " zero flashes ".It is uninterruptedly electric to be equipped with static energy storage
Source UPS, mobile power vehicle have the emergency service ability under the extreme conditions such as the standby, war preparedness of calamity.User can be according to practical need
It asks, the equipment and equipment of flexible choice configuration are practical.
[Detailed description of the invention]
Fig. 1 is the electrical of emergency service configuration of the common load using " dual power supply+double power supply automatic switching switch ATS "
Wiring diagram；
Fig. 2 is that the important load relatively low to power reguirements uses " dual power supply+emergency bus+Dual-power automatic switching
The electric hookup of the emergency service configuration of switch ATS+ moving emergency power supply "；
Fig. 3 is important load electric hookup of the present invention；
Fig. 4 is the present invention especially important load electric hookup；
Fig. 5 is the basic structure schematic diagram of solid converting switch SSTS of the present invention.
Wherein: the first power supply of 1-；2- second source；3- power supply vehicle of meet an emergency；4- quickly plugs into case；5- emergency bus；6-
One double power supply automatic switching switch ATS；The second double power supply automatic switching switch of 7- ATS；8- solid converting switch SSTS；9- is quick
Feel load.
[specific embodiment]
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is the embodiment of a part of the invention, the embodiment being not all of, and it is not intended to limit range disclosed by the invention.In addition,
Below in explanation, descriptions of well-known structures and technologies are omitted, obscures concept disclosed by the invention to avoid unnecessary.
Based on the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, should fall within the scope of the present invention.
The various structural schematic diagrams for disclosing embodiment according to the present invention are shown in the attached drawings.These figures not be by than
What example was drawn, wherein some details are magnified in order to remove the purpose of expression, and some details may be omitted.Institute in figure
The shape in various regions, layer and relative size, the positional relationship between them shown is merely exemplary, and in practice may
It is deviated due to manufacturing tolerance or technical restriction, and those skilled in the art may be additionally designed as required
With different shapes and sizes, the regions/layers of relative position.
In context disclosed by the invention, when one layer/element is referred to as located at another layer/element "upper", the layer/member
Part can may exist intermediate layer/element on another layer/element or between them.In addition, if one
Kind towards in one layer/element be located at another layer/element "upper", then when turn towards when, the layer/element can be located at this separately
One layer/element "lower".
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that making in this way
Data are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein can be in addition to scheming herein
Sequence other than those of showing or describe is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units
Those of be not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes,
The intrinsic other step or units of method, product or equipment.
The invention will be described in further detail with reference to the accompanying drawing:
Embodiment 1:
As shown in figure 3, in order to meet the moment offer continued power in route power loss, while voltage fluctuation is resisted, it is answering
Series connection enters static energy storage uninterruptible power supply UPS between anxious bus 5 and load, is the relatively high important load of power reguirements
Form " dual power supply+emergency bus 5+ static state energy storage uninterruptible power supply UPS+ double power supply automatic switching switch ATS+ moving emergency electricity
The emergency service in source " configures；
The 4# bus and 5# bus of switchyard are connected composition by the first power supply 1 with switchgear house 4# bus and 5# bus respectively
The dual power supply formed with second source 2；One end of emergency bus 5 by the first double power supply automatic switching switch ATS 6 respectively with
Moving emergency power supply and the first power supply 1 are connected, and the other end of emergency bus 5 connects static energy storage uninterruptible power supply ups power,
User side important load by the second double power supply automatic switching switch ATS 7 respectively with static energy storage uninterruptible power supply ups power
It is connected with second source 2, " dual power supply+emergency bus 5+ static state energy storage uninterruptible power supply UPS+ Dual-power automatic switching is opened for formation
The emergency service configuration of pass ATS+ moving emergency power supply ".Wherein, moving emergency power supply uses power supply vehicle of meet an emergency 3, emergency power supply
Vehicle 3 is connected by case 4 of quickly plugging into the first double power supply automatic switching switch ATS 6.
Static energy storage uninterruptible power supply UPS (Uninterrupted Power Supply), is that battery is passed through inversion
The modules such as device by DC conversion at the system equipment of alternating current, be mainly used for single computer, computer network system or its
The offers such as its power electronic equipment such as solenoid valve, pressure transmitter stabilization, continual power supply.When alternating current input is normal
When, static energy storage uninterruptible power supply UPS will be supplied to load to use after alternating current pressure stabilizing, static energy storage uninterruptible power supply at this time
UPS is exactly an AC system electricity voltage-stablizer, while it also charges to self-contained battery；When commercial power interruption, static energy storage is uninterrupted
Power supply UPS by the direct current energy of battery, continues to supply 220V exchange by the square normal load of inverter switching conversion immediately
Electricity makes load maintain to work normally and protects load soft and hardware not damaged.Static energy storage uninterruptible power supply UPS equipment is usual
Protection can be provided to overtension or brownout.
Embodiment 2
As shown in figure 4, using " dual power supply+emergency bus 5+ static state energy storage uninterruptible power supply UPS+ to special important load
The emergency service of solid converting switch SSTS 8+ moving emergency power supply " configures；
The 4# bus and 5# bus of switchyard are connected composition by the first power supply 1 with switchgear house 4# bus and 5# bus respectively
The dual power supply formed with second source 2；One end of emergency bus 5 by the first double power supply automatic switching switch ATS 6 respectively with
Moving emergency power supply and the first power supply 1 are connected, and the other end of emergency bus 5 connects static energy storage uninterruptible power supply ups power,
User side important load is electric with static energy storage uninterruptible power supply ups power and second respectively by solid converting switch SSTS 8
Source 2 is connected, and forms " dual power supply+emergency bus 5+ static state energy storage uninterruptible power supply UPS+ solid converting switch SSTS 8+ movement
The emergency service of emergency power supply " configures.Wherein, moving emergency power supply uses power supply vehicle of meet an emergency 3, and power supply vehicle of meet an emergency 3 passes through quick
Case 4 of plugging into is connected with the first double power supply automatic switching switch ATS 6.
Solid converting switch SSTS 8 (SolidState Transfer Switch) is that power supply alternative is cut automatically
Changing device, when main power source is in normal voltage range, load is connected to always main power source；When main power source breaks down,
Load automatic switch is to backup power source, and after main power source restores normal, load automatically switches to main power source again.Solid converting switch
8 typical switching time of SSTS is 5ms, not will cause sensitive loads power-off, automated system, petrochemical industry in power industry
Power-supply system, computer and telecommunication center, the automation in building and security system etc. be widely used.
As shown in figure 5, Fig. 5 be 8 basic structure of solid converting switch SSTS, including respectively with main power source and backup power source
Connected power switch Q1 and power switch Q2, main power source and backup power source pass through power switch Q1 and power switch Q2 respectively
It is connected with sensitive load 9；Series thyristor switch TS1 and thyristor switch TS2 between power switch Q1 and power switch Q2,
It is parallel with high speed machine switch PS1 on thyristor switch TS1, high speed machine switch PS2 is parallel on thyristor switch TS2；It is brilliant
Node between thyristor switch TS1 and thyristor switch TS2 is connected by power switch Q0 with sensitive load 9.
The course of work of solid converting switch SSTS 8 is as follows:
During normal operation, by main power source powering load, parallel high-speed mechanical switch PS1 closure, thyristor switch
TS1 is bypassed, power switch Q0 closure.When main power source generation voltage dip, and temporary decline is more than that sensitive loads are normally transported
When the limit value that row can bear, 8 control system of solid converting switch SSTS issues switching command, and high speed machine switch PS1 is closed
It is disconnected, while thyristor switch TS1 conducting is triggered, electric current is immediately transferred on thyristor, when high speed machine switch PS1 is opened,
Hardly have electric arc, though have as the conducting of thyristor and extinguish rapidly.Then cancel thyristor switch TS1's
Trigger signal, thyristor will hereafter electric current first time zero passage when turn off.Then the thyristor switch TS2 of the triggering other side is led
Logical, backup power source starts powering load.At this point, actually oneself is completed switching.After control after stable after a period of time
System processed issues the order of closure high speed machine switch PS2 again, and thyristor switch TS2 is also being connected at this time, and both ends pressure drop connects
It is bordering on zero, closure high speed machine switch PS2 will not generate electric arc, and the trigger signal completion for then cancelling thyristor switch TS2 is whole
A handoff procedure.When solid converting switch SSTS 8 needs to safeguard, by power switch Q1 or power switch Q2 come to negative
Carry uninterrupted power supply.
As shown in figure 4, not obtaining power supply supplement when in 30 minutes of static energy storage uninterruptible power supply UPS continued power
Or period static state energy storage uninterruptible power supply UPS failure, it will be switched power supply in 5 milliseconds by solid converting switch SSTS 8
Right side, even sensitive load 9 is also unaffected, whole process powers " zero flashes ".The present invention is able to achieve to flash for electrical zero and want
It asks, the whole circuits and device configured from distribution transformer to load end are referred to as " zero flashes " power supply system.Fig. 4 institute
Show and exactly a set of is answered by dual power supply, emergency bus 5, static energy storage uninterruptible power supply UPS, solid converting switch SSTS 8, movement
" zero flashes " emergency power supply system that urgent telegram source is composed.
The principle of the present invention:
Power quality refers to the quality that the AC energy of user terminal is supplied by utility network.The public power of perfect condition
Net should be with constant frequency, sinusoidal waveform and normal voltage to customer power supply.Meanwhile in three-phase alternating current system, each phase voltage
Answer equal in magnitude, phase symmetrical with the amplitude of electric current and 120 ° of mutual deviation.But due to generator, transformer and the route in system
Etc. equipment it is non-linear or asymmetric, load character is changeable, and control measures are not perfect in addition and operation operation, external interference and each
Kind of failure and other reasons, this ideal state are simultaneously not present, therefore produce operation of power networks, power equipment and for electricity consumption link
In various problems, also just produce the concept of power quality.Around power quality meaning, usually packet is understood from different perspectives
It includes:
(1) quality of voltage: being the deviation with virtual voltage and desired voltage, the electricity that reflection power supply enterprise supplies to user
Can whether He Ge concept.This definition can include most of power quality problems, but cannot include electric energy matter caused by frequency
Amount problem does not include influence and pollution of the electrical equipment to grid power quality yet.
(2) current quality: reflecting the variation for the electric current for having substantial connection with quality of voltage, is that power consumer is removed to friendship
Galvanic electricity source has outside the requirement of constant frequency, sinusoidal waveform, also requires current waveform and supply voltage same-phase to guarantee high power
Factor operation.This definition facilitates the improvement of grid power quality and reduces line loss, but cannot summarize most of because of voltage original
The power quality problem because caused by.
(3) power supply quality: its art-recognized meanings refers to quality of voltage and power supply reliability, and non-technical meaning refers to Service Quality
Amount.Including power supply enterprise to reasonability, the transparency etc. of reflection speed and the electricity price composition of customer complaint.
(4) power quality: including current quality and reflect the power for the electricity consumption side in electricity consumption dyadic interaction and influence
Benefit, responsibilities and obligations also include whether on schedule, in full power consumer pays electricity charge etc..
Currently, research and solution power quality problem have become the task of top priority of electric power development.Main Topics packet
It includes:
(1) research harmonic wave pollutes grid power quality influence simultaneously takes corresponding countermeasure.Since the metals such as steel are molten
Refine the development of enterprise, the increase of chemical industry rectifier equipment, the exploitation of high-power thyristor fairing and power electronic devices
Using, make utility network harmonic wave influence be on the rise, the waveform of power supply produces serious distortion, affects power grid security
Reliability service.
(2) it influence of the research harmonic wave to electric power metering device and takes appropriate measures.Due to wave distortion, make electric power
The accuracy of metering and accuracy cause measurement error, generate additional power loss, cause unnecessary economy to influence
Loss.
(3) research power quality pollutes the influence to new high-tech enterprise and takes corresponding technological means.Due to calculating
Machine system and the automation production flow line and emerging IT industry, microelectronic chip manufacture controlled based on microelectric technique
Enterprise etc., the requirement and sensitivity to power quality are more much higher than general power equipment, the electric energy of any transient state and transient state
Quality problems all may cause damage or the operation exception of equipment, influence normally to produce, and cause economic damage to power consumer
It loses.
(4) reinforce the development of power quality control device.Even if the basic function of utility power quality control device will be at any
Part, even improves power quality under extremely severe condition of power supply, guarantee the stabilization, reliable of supply voltage, electric current, humorous
The moment that wave interference generates can be suppressed or eliminated immediately.
" zero flashes " refers to that end mains ripple is lower than the 1% of voltage rating, makes one to be detectable lamp illuminance not
Visual sense caused by stabilization.Zero, which flashes low-voltage distribution system, refers to when power quality changes, and realizes that zero flashes power demands
Slave distribution transformer to the general designation of the package unit of load end.
When 4# bus power loss, important load is by static energy storage uninterruptible power supply UPS continued power, and powers duration is up to 30
Minute, important load is unaffected.And static state energy storage uninterruptible power supply UPS has filtering and voltage stabilizing function, can resist voltage
Fluctuation and temporarily drop, improve power quality.
The present invention configures emergency bus 5 in all 23 switchgear houses in demonstration area, and important load accesses emergency bus 5,
Emergency bus 5 extends to building exposed wall, the quick case 4 of plugging into of setting.User side distribute rationally double power supply automatic switching switch ATS,
Centralization static state energy storage uninterruptible power supply UPS and distributing static state energy storage uninterruptible power supply UPS, EPS, to special important load
Configure 5 groups of solid converting switch SSTS 8.Emergency guarantee center is being set up at 1.1 kilometers of user, it is synchronous to be equipped with movable type
The moving emergencies power supply such as flywheel and diesel-driven generator constructs domestic first set by " dual power supply+emergency bus 5+ static state energy storage is not
The zero of uninterruptible power UPS+ solid converting switch SSTS 8+ moving emergency power supply " composition flashes low-voltage distribution system.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (10)
1. one kind zero flashes low-voltage distribution system characterized by comprising
The first power supply (1) and second source (2) being connected respectively in switchyard two common buses；
It is answered respectively with movement by the first double power supply automatic switching switch ATS (6) one end of emergency bus (5), emergency bus (5)
Urgent telegram source is connected with the first power supply (1)；The static energy storage uninterruptible power supply UPS phase of the other end of emergency bus (5) and user side
Even；And
Second double power supply automatic switching switch ATS (7), user side load pass through the second double power supply automatic switching switch ATS (7) points
It is not connected with static energy storage uninterruptible power supply UPS and second source (2).
2. according to claim 1 zero flashes low-voltage distribution system, which is characterized in that moving emergency power supply uses and answers urgent telegram
Source vehicle (3), power supply vehicle of meet an emergency (3) are connected by case (4) of quickly plugging into the first double power supply automatic switching switch ATS (6).
3. according to claim 1 zero flashes low-voltage distribution system, which is characterized in that moving emergency power supply is using mobile
Flywheel or diesel-driven generator.
4. one kind zero flashes low-voltage distribution system characterized by comprising
The first power supply (1) and second source (2) being connected respectively in switchyard two common buses；
It is answered respectively with movement by the first double power supply automatic switching switch ATS (6) one end of emergency bus (5), emergency bus (5)
Urgent telegram source is connected with the first power supply (1)；The static energy storage uninterruptible power supply UPS phase of the other end of emergency bus (5) and user side
Even；And
Solid converting switch SSTS (8), user side load are uninterrupted with static energy storage respectively by solid converting switch SSTS (8)
Power supply UPS is connected with second source (2).
5. according to claim 4 zero flashes low-voltage distribution system, which is characterized in that moving emergency power supply uses and answers urgent telegram
Source vehicle (3), power supply vehicle of meet an emergency (3) are connected by case (4) of quickly plugging into the first double power supply automatic switching switch ATS (6).
6. according to claim 4 zero flashes low-voltage distribution system, which is characterized in that moving emergency power supply is using mobile
Flywheel or diesel-driven generator.
7. according to claim 4 zero flashes low-voltage distribution system, which is characterized in that solid converting switch SSTS (8) is set
It is equipped with multiple groups.
8. zero flashes low-voltage distribution system according to claim 4-7 any one, which is characterized in that solid converting switch
SSTS (8) includes the power switch Q1 being connected respectively with main power source and backup power source and power switch Q2, main power source and standby electricity
Source passes through power switch Q1 and power switch Q2 respectively and is connected with sensitive load (9)；Between power switch Q1 and power switch Q2
High speed machine switch PS1, thyristor are parallel on series thyristor switch TS1 and thyristor switch TS2, thyristor switch TS1
High speed machine switch PS2 is parallel on switch TS2；Node between thyristor switch TS1 and thyristor switch TS2 passes through electric power
Switch Q0 is connected with sensitive load (9).
9. zero operating method for flashing low-voltage distribution system described in a kind of claim 8, which comprises the following steps:
When voltage dip occurs for main power source, and temporary decline is more than that sensitive loads operate normally the limit value that can bear, Gu
State switches switch SSTS (8) control system and issues switching command, high speed machine switch PS1 shutdown, while triggering thyristor switch
TS1 conducting, electric current are immediately transferred on thyristor；
Then cancel thyristor switch TS1 trigger signal, thyristor switch TS1 will hereafter electric current first time zero passage when close
It is disconnected；Then the thyristor switch TS2 conducting of the triggering other side, backup power source start powering load；
After stablizing, control system issues the order of closure high speed machine switch PS2 again, and thyristor switch TS2 is also being led at this time
Logical, close to zero, closure high speed machine switch PS2 will not generate electric arc for both ends pressure drop, then cancel the touching of thyristor switch TS2
It signals to complete entire handoff procedure.
10. operating method according to claim 9, which is characterized in that when solid converting switch SSTS (8) needs to safeguard
When, load uninterrupted power supply is given by power switch Q1 or power switch Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542418.XA CN109687570B (en) | 2018-12-17 | 2018-12-17 | Zero-flicker low-voltage power distribution system and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542418.XA CN109687570B (en) | 2018-12-17 | 2018-12-17 | Zero-flicker low-voltage power distribution system and operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109687570A true CN109687570A (en) | 2019-04-26 |
| CN109687570B CN109687570B (en) | 2021-03-02 |
Family
ID=66186162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811542418.XA Active CN109687570B (en) | 2018-12-17 | 2018-12-17 | Zero-flicker low-voltage power distribution system and operation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109687570B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601351A (en) * | 2019-09-25 | 2019-12-20 | 华北电力大学 | Dual-power seamless switching device and method |
| CN111654034A (en) * | 2020-06-24 | 2020-09-11 | 广东电网有限责任公司电力科学研究院 | Park level voltage sag layered and graded treatment system and method and terminal equipment |
| CN112531690A (en) * | 2020-11-26 | 2021-03-19 | 广东电网有限责任公司清远供电局 | Power supply switching system and method |
| WO2024044631A1 (en) * | 2022-08-24 | 2024-02-29 | Chase Arnold | Emergency reserve power system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204089328U (en) * | 2014-10-11 | 2015-01-07 | 万达酒店设计研究院有限公司 | For the device that hotel Nei Chaifa and civil power switch |
| CN104332989A (en) * | 2014-10-24 | 2015-02-04 | 清华大学 | Active power distribution network voltage dip treatment method based on eddy current drive quick breaker |
| CN206759152U (en) * | 2017-04-25 | 2017-12-15 | 安徽伊格瑞德电气设备有限公司 | A kind of dual power supply switching undisturbed device |
| US20170366040A1 (en) * | 2016-06-16 | 2017-12-21 | Eaton Corporation | Transfer switch apparatus and methods using transition time monitoring and adaptation |
| CN206878548U (en) * | 2017-05-25 | 2018-01-12 | 昆明理工大学 | A kind of distributed generation system for thering is the quality of power supply to support to priority loads |
| CN107769367A (en) * | 2017-10-17 | 2018-03-06 | 国网江苏省电力公司盐城供电公司 | Load seamless switching device is pressed in a kind of distribution based on solid-state switch |
| CN208046310U (en) * | 2018-03-29 | 2018-11-02 | 安徽尚途电力保护设备有限公司 | One kind shaking dual power supply undisturbed fast switching system based on LC |
-
2018
- 2018-12-17 CN CN201811542418.XA patent/CN109687570B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204089328U (en) * | 2014-10-11 | 2015-01-07 | 万达酒店设计研究院有限公司 | For the device that hotel Nei Chaifa and civil power switch |
| CN104332989A (en) * | 2014-10-24 | 2015-02-04 | 清华大学 | Active power distribution network voltage dip treatment method based on eddy current drive quick breaker |
| US20170366040A1 (en) * | 2016-06-16 | 2017-12-21 | Eaton Corporation | Transfer switch apparatus and methods using transition time monitoring and adaptation |
| CN206759152U (en) * | 2017-04-25 | 2017-12-15 | 安徽伊格瑞德电气设备有限公司 | A kind of dual power supply switching undisturbed device |
| CN206878548U (en) * | 2017-05-25 | 2018-01-12 | 昆明理工大学 | A kind of distributed generation system for thering is the quality of power supply to support to priority loads |
| CN107769367A (en) * | 2017-10-17 | 2018-03-06 | 国网江苏省电力公司盐城供电公司 | Load seamless switching device is pressed in a kind of distribution based on solid-state switch |
| CN208046310U (en) * | 2018-03-29 | 2018-11-02 | 安徽尚途电力保护设备有限公司 | One kind shaking dual power supply undisturbed fast switching system based on LC |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601351A (en) * | 2019-09-25 | 2019-12-20 | 华北电力大学 | Dual-power seamless switching device and method |
| CN111654034A (en) * | 2020-06-24 | 2020-09-11 | 广东电网有限责任公司电力科学研究院 | Park level voltage sag layered and graded treatment system and method and terminal equipment |
| CN112531690A (en) * | 2020-11-26 | 2021-03-19 | 广东电网有限责任公司清远供电局 | Power supply switching system and method |
| WO2024044631A1 (en) * | 2022-08-24 | 2024-02-29 | Chase Arnold | Emergency reserve power system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109687570B (en) | 2021-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109687570A (en) | One kind zero flashes low-voltage distribution system and operating method | |
| McGranaghan et al. | Technical and system requirements for advanced distribution automation | |
| CN201789329U (en) | Uninterruptable AC and DC power supply system | |
| CN103364662B (en) | For the power supply test macro of machine room | |
| CN103001254B (en) | Alternating current and direct current hybrid micro-grid system | |
| CN207753466U (en) | A kind of Ac/dc Power Systems based on dual redundant electric power electric transformer | |
| CN104917286A (en) | High-reliability complete machine cabinet continuous power supply device and method | |
| CN207652128U (en) | A kind of dual power supply uninterruptible power system | |
| CN101969227B (en) | Self-powered automatic switching and closing high-voltage control system | |
| CN101710728A (en) | Method and device for supplying power to chassis equipment of communication machine room | |
| CN208874352U (en) | Centralized multi-purpose cargo ship ups system | |
| CN201378749Y (en) | Fire-fighting device emergency power supply | |
| CN201153219Y (en) | Auto-switch-on ring network cabinet for PLC controlled double electricity supply | |
| CN103457350A (en) | Automatic throw-in equipment of emergency power supply | |
| CN203056681U (en) | Railway section relay station power unit | |
| CN215120269U (en) | Uninterrupted power supply system | |
| CN214626385U (en) | Micro-grid device combining vehicle-mounted gas turbine generator set and energy storage | |
| CN103904776A (en) | Intelligent power distribution room power system | |
| CN214045032U (en) | Novel intelligent direct current of transformer substation screen | |
| CN205178860U (en) | Uninterrupted power source supply ware of alternating current -direct current input | |
| CN104377805A (en) | Communication station low-voltage distribution system | |
| CN205123393U (en) | Power switch and reserve control electrical power generating system of inside control device thereof | |
| CN204706949U (en) | Intelligent substation solar energy UPS emergency power supply system | |
| Kabir et al. | Automatic Transfer Switch Using Programmable Logic Controller | |
| Kumar et al. | Solid-state circuit breakers in distributed energy resources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |