CN206060218U - Novel seamless phase-change switch system - Google Patents
Novel seamless phase-change switch system Download PDFInfo
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- CN206060218U CN206060218U CN201621099513.3U CN201621099513U CN206060218U CN 206060218 U CN206060218 U CN 206060218U CN 201621099513 U CN201621099513 U CN 201621099513U CN 206060218 U CN206060218 U CN 206060218U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
Novel seamless phase-change switch system.There is provided a kind of completely seamless novel seamless phase-change switch system, seamless commutation can be accomplished, without arc commutation and user's " noninductive " commutation.Including ARM control modules, switch module, detection module and GPRS communication modules, the switch module, detection module are connected with ARM control modules by GPRS communication modules respectively, the switch module includes that a catalyst, a magnetic latching relay and a power diode, the power diode and magnetic latching relay are in parallel with catalyst after connecting.This utility model commutation process is the characteristic using three-phase electricity and the single-phase conducting of diode so as to forces from commutation, commutation process does not have a power failure, can accomplish seamless commutation, without arc commutation, user's " noninductive commutation ", accomplishes not power-off 0ms commutations to load.
Description
Technical field
This utility model is related to supply of electric power technical field, and in particular to a kind of novel seamless phase-change switch system.
Background technology
There is substantial amounts of single-phase load in low-voltage network, due to single-phase load distribution it is unbalanced different with input when
Property so that three-phase load unbalance becomes in low voltage electric network operation maintenance one and compares distinct issues.Three-phase load unbalance
Grid loss will be increased, power supply quality will be had a strong impact on, low voltage electric network, distribution transformer, 10～35kV high-tension lines will be caused
Harm.With the development of social economy, the increasingly raising of people's living standard, a large amount of powerful single-phase household electrical appliance are such as：It is empty
Device, water heater, microwave oven, electromagnetic oven etc. is adjusted to enter average family, these household electrical appliance bring comfortable, convenient, fast
While life, single-phase load surge is caused, the impact of low-voltage power supply system three-phase load unbalance has been further exacerbated by.It is low
The three-phase imbalance of voltage electric grid always perplexs one of subject matter of power supply unit.
The three-phrase burden balance work of low-voltage network has received power department more and more concern and attention, but
Limited by state of the art and measuring instrument, the balancing work of low-voltage three-phase load still only rest on routine test and
Load adjustment is rule of thumb removed, and equilibrium point is only conceived to balance at the minority test point such as step down side outlet, and do not had
In view of the balance inside low-voltage power network, so the DeGrain of adjustment.It is therefore desirable to carrying out low-voltage circuit three-phase
Balancing the load technical research, using advanced intelligent power grid technology, Power Electronic Technique, realizes that low-voltage circuit three-phase load is automatic
Balance, makes low-voltage circuit three-phase load all fronts, all the period of time keep balance.Carry out low-voltage circuit three-phrase burden balance technical research,
Distribution transforming, low-voltage circuit loss can be substantially reduced, power supply quality and utilization rate of equipment and installations is improved, power grid construction investment is reduced.
Patent No. " 200710055277.4 ", China of the patent name for " power intelligent seamless three-phase leveling system "
Patent provides the power intelligent seamless three-phase that a kind of employing detection module, server, handover module and switching switch are constituted
Leveling system, the structure of the concrete phase-change switch that the patent is proposed is as shown in fig. 7, as a example by being switched to B phases from A phases, introduce which
Commutation process.A phase contacts K1 closures, referring to Fig. 3, receive in a cycle before time tl tangent by A at the beginning
The instruction of B phases is changed to, to bidirectional thyristor triggering command and K2 adhesives is made, now the turn on thyristors of A phases.In A phase voltage mistakes
Zero point is the shut-off of t3 moment bidirectional thyristor, is then cut off A phase contact K2, now loads from A phases and disconnect.Next, closure B
The catalyst K2 of phase and B phase voltage zero crossings be bidirectional thyristor conducting, then close B phases catalyst K1 and disconnect B phases
Catalyst K2, now load access B phases, complete whole commutation process.Its commutation process load voltage waveform such as Fig. 8 institutes
Show there are 1/3rd cycles（t3-t4）Power-off, this has had a strong impact on the power supply quality of resident.The power-off of 7ms can cause electronics
Formula daylight lamp serious flicker, inductance type daylight lamp extinguish and restart, old-fashioned electric cooker false tripping, motor oscillating, for a user,
Noninductive commutation can not be accomplished.
Utility model content
This utility model is directed to problem above, there is provided a kind of completely seamless novel seamless phase-change switch system, can be with
Accomplish seamless commutation, without arc commutation and user's " noninductive " commutation.
The technical solution of the utility model is：Including ARM control modules, switch module, detection module and GPRS communication mould
Block, the switch module, detection module are connected with ARM control modules by GPRS communication modules respectively, the switch module bag
Include three identical switch module A, switch module B and switch module C being connected on A, B, C line of electrical network, the switching molding
The other end of block A, switch module B and switch module C is connected on the live wire of same load；The detection module is used for detection three
Electric current, voltage signal in phase line, the switch module A, switch module B and switch module C respectively including catalyst,
One magnetic latching relay and a power diode, the power diode and magnetic latching relay series connection after and catalyst
It is in parallel.
The detection module includes that three one end are connected to switch module A, switch module B, switch module C and electrical network
A, B, C three-phase between, the other end be connected to the Hall voltage sensor on zero line, one be connected to switch module and load it
Between Hall current sensor.
The ARM controller includes signal receiving module, signal processing module, signal transmitting module and enumerator.
The beneficial effects of the utility model are：Commutation process is the characteristic using three-phase electricity and the single-phase conducting of diode, is made
Which is forced from commutation, and commutation process does not have a power failure, and can accomplish seamless commutation, without arc commutation, user's " noninductive commutation ", load is accomplished
Not power-off 0ms commutations；Magnetic latching relay is added to add the main circuit structure of power diode using catalyst using phase-change switch, one
, when Same Efficieney grade is reached, power diode is less expensive, and volume is also little than bidirectional thyristor, can so drop for aspect
The volume of low whole device, is easily installed；On the other hand, compared with bidirectional thyristor, power diode need not drive, and it drops
The low design difficulty of whole control circuit, improves the reliability and response speed of device commutation.Novel seamless phase-change switch,
Both commutation operation can be completed with remotely control, low pressure can be substantially increased by data by radioing to control centre again
Distribution automation level.Control centre takes effective three-phrase burden balance scheduling strategy, can substantially reduce power network current
Degree of unbalancedness, effectively reduces the loss of electrical network distribution line, improves rate of qualified voltage, improves power distribution network power supply quality, drop
The power supply cost of low enterprise, realizes the purpose of energy-saving and emission-reduction.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic diagram of switch module；
Fig. 3 is practical application schematic diagram of the present utility model；
Fig. 4 is three-phase voltage oscillogram；
Fig. 5 is the first embodiment commutation process load voltage waveform figure of this utility model；
Fig. 6 is second embodiment commutation process load voltage waveform figure of this utility model；
Fig. 7 is the structural representation of the phase-change switch in background technology；
Fig. 8 is commutation process load voltage waveform figure in background technology.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is illustrated.
As illustrated in fig. 1 and 2, this utility model novel seamless phase-change switch system, including ARM control module, switching molding
Block, detection module and GPRS communication modules, the switch module, detection module pass through GPRS communication modules respectively and ARM is controlled
Module is connected, and the switch module includes three identical switch module A, switch module B being connected on A, B, C line of electrical network
With switch module C, the other end of the switch module A, switch module B and switch module C is connected to the fire of same customer charge
On line；Electric current that the detection module is used to detecting in three-phase line, voltage signal, the switch module A, switch module B and
Switch module C respectively include catalyst, a magnetic latching relay and a power diode, the power diode and
It is in parallel with catalyst after magnetic latching relay series connection.ARM control modules are received from control centre by GPRS communication modules
Commutation order, the control signal of ARM control modules can be with the break-make of controlling switch module, commutation order after drive amplification
Can both be the commutation instruction of power supply administration staff, it is also possible to be mounted to what the control centre of transformer outlet side calculated
Dispatch command.After ARM control modules receive commutation order, commutation operation is carried out to user using switch module.ARM controls mould
Block can also by the load current information of the user, the information of voltage of grid entry point, current grid-connected separate information transfer to control centre,
It is easy to visual remote detection and manages.
The detection module includes that three one end are connected to switch module A, switch module B, switch module C and electrical network
A, B, C three-phase between, the other end be connected to the Hall voltage sensor on zero line, for detecting the three-phase voltage of electrical network；One
The individual Hall current sensor being connected between switch module and load, for detecting load current, and by this current information
Control centre is reached, control centre gives each load according to the dispatching distribution algorithm based on the current separate and size of current of load
Send commutation instruction.
The ARM controller includes signal receiving module, signal processing module, signal transmitting module and enumerator.It is described
Signal receiving module receives the voltage signal in Hall voltage sensor, and signal processing module processes voltage signal and carries out respectively
Lock phase processor, is further calculated the voltage-phase of A, B, C three-phase；Control instruction is sent to switching molding by signal transmitting module
Block；The effect of enumerator is that corresponding electric network voltage phase information is converted into temporal information.
As shown in figure 3, control centre is installed on transformer outlet side, remaining each load passes through novel seamless phase-change switch
It is connected to power distribution network.When control centre, to detect distribute-electricity transformer district load unbalanced, will be communicated by GPRS according to scheduling strategy
Module sends commutation instruction to the novel seamless phase-change switch of corresponding load, and novel seamless phase-change switch receives commutation and instructed
Operate into commutation.Control centre may be alternatively located at the monitoring center of power supply administration, can carry out manual dispatching.
Method of work of the present utility model is：
Under normal operation, the catalyst on the switch module of only current phase is closure.
The voltage of electrical network A, B, C three-phase that Hall voltage sensor is surveyed, ARM control modules are to A, B, C three-phase for collecting
Voltage carries out lock phase processor respectively, is further calculated the voltage-phase of A, B, C three-phase, forms three-phase oscillogram such as Fig. 4 institutes
Show；
（1）When the switching command that ARM control modules are received is that A phases are switched to B phases or B phases are switched to C phases or C phases switch
To A phases, switching instant point is chosen by the following method：In a complete current phase sinusoidal cycles inside counting device interval t0 sampling one
Secondary, the voltage of the current phase of electrical network detected when Hall voltage sensor enters zero point from negative value, and the zero point is adopted as first
Sampling point, enumerator are designated as 1, the sampled point of the voltage of the current phase of electrical network detected for the first time when Hall voltage sensor more than 0
Enumerator is designated as 2；Current last front sampled point enumerator mutually equal with incision phase voltage is designated as x；The voltage of current phase
Sampled point enumerator less than 0 is designated as y for the first time；First sampled point counter counts less than 0 is z to incision phase voltage again；
After receiving commutation order, ARM controller is started working, whne it is current mutually enter next complete sinusoidal cycles when,
Enumerator is started counting up.
Between 1 and x, the catalyst of the switch module of current phase disconnects enumerator, and the switching molding of closed phase
The magnetic latching relay of block；
Enumerator disconnects the magnetic latching relay of switch module A, the catalyst of closure switch module B between y and z；
Enumerator after z has been crossed disconnects the magnetic latching relay of switch module B, finishes.
（2）When the switching command that ARM control modules are received is that A phases are switched to C phases or C phases are switched to B phases or B phases switch
To A phases, switching instant point is chosen by the following method：Switching instant point is chosen by the following method：One it is complete it is current mutually just
String cycle inside counting device interval t0 ' samples once, and the voltage of the current phase of electrical network detected when Hall voltage sensor is from negative value
Into zero point, the zero point is designated as 1 as first sampled point, enumerator, when the electricity that Hall voltage sensor is detected for the first time
Net sampled point enumerator of the voltage of current phase more than 0 and be designated as 2；Current last front sampling mutually equal with incision phase voltage
Point counter counts are designated as x '；The voltage of incision phase is designated as y ' less than 0 sampled point enumerator for the first time；
After receiving commutation order, ARM controller is started working, whne it is current mutually enter next complete sinusoidal cycles when,
Enumerator is started counting up.
Before rolling counters forward, the magnetic latching relay closure of current phase；
When enumerator is between 1 to 2, the catalyst of current phase is immediately turned off；
When enumerator is between 2 and x ', first the magnetic latching relay of closed phase disconnect again current phase magnetic keep after
Electrical equipment；
Enumerator between x ' and y ', the catalyst of closed phase；
Enumerator is finished in the magnetic latching relay of the switch module that incision phase is disconnected after y '.
Treat that the reason for correlation disconnects the magnetic latching relay of its switch module again into negative value is：One is in order to two
The electric current of pole pipe is transferred on catalyst, is set apart；After two are because voltage reversal, diode current is set to zero with regard to one,
Magnetic latching relay is now disconnected, belongs to the mechanical life that mechanical action can extend magnetic latching relay.
Embodiment 1（Grid condition 220V, 50HZ, 0.2S）The order for receiving is that A phases are switched to B phases
1）, the voltage of electrical network A, B, C three-phase surveyed of Hall voltage sensor, ARM control modules are to A, B, C tri- for collecting
Phase voltage carries out lock phase processor respectively, is further calculated the voltage-phase of A, B, C three-phase, forms three-phase oscillogram, with Fig. 4
As a example by；
2）, choose switching instant point：The sampling period of ARM is set in 0.1ms, i.e. a cycle 200 sampled points, four
Switching point is respectively：1（The t1 moment）、84（The t2 moment）、101（The t3 moment）、167（The t4 moment）；
3）, receive commutation instruction；
4）, perform commutation instruction：
Between 1 and 84, the catalyst of the switch module of A phases disconnects enumerator, and closes the magnetic of the switch module of B phases
Guard relay；Due to the unilateal conduction characteristic of diode, between t1 the and t2 moment, A phase voltages are higher than B phase voltages, therefore
Although the magnetic latching relay of switch module A and B is all closed, the diode in only switch module A has electric current to flow through, and has served as
After the t2 moment, because B phase voltages are higher than A phase voltages, the diode of switch module B has electric current to flow through, and switch module A
Diode reverse voltage clamp cut-off.
Enumerator i.e. between t3 the and t4 moment, disconnects the magnetic latching relay of the switch module of A phases, closes 101 and 167
Close the catalyst of the switch module of B phases；
Enumerator after having spent for 167 i.e. t4 moment disconnects the magnetic latching relay of the switch module of B phases, finishes；Its commutation
Process Duty voltage waveform loads not power-off as shown in figure 5, realize the seamless commutations of 0ms.
Embodiment 2（Grid condition 220V, 50HZ, 0.2S）The order for receiving is that A phases are switched to C phases
1）, the voltage of electrical network A, B, C three-phase surveyed of Hall voltage sensor, ARM control modules are to A, B, C tri- for collecting
Phase voltage carries out lock phase processor respectively, is further calculated the voltage-phase of A, B, C three-phase, forms three-phase oscillogram, with Fig. 4
As a example by；
2）, choose switching instant point：The sampling period of ARM is set in 0.1ms, i.e. a cycle 200 sampled points, four
Switching point is respectively：1（T1 ' the moment）、2（T2 ' the moment）、x’ （T3 ' the moment）And y '（T4 ' the moment）；
3）, receive commutation instruction；
4）, perform commutation instruction：
Before rolling counters forward, the magnetic latching relay of the switch module of A phases is closed；
When enumerator is between 1 to 2（I.e. when the voltage of A phases is shortly past zero point）, immediately turn off the catalyst of A phases, t1 '
The diode of A phases bears forward voltage, diode current flow and the t2 ' moment between；
When enumerator is between 2 and 16, the magnetic latching relay of C phases is first closed（As the diode of now C phases bears electricity
The pressure reduction of pressure CA, and now voltage CA is more than zero, so the diode current flow of t2 ' and t3 ' moment C phases, the diode of A phases is forced
Shut-off）The magnetic latching relay of A phases is disconnected again（Turned on the diode for preventing A phases again）；
Enumerator i.e. between t3 ' and t4 ' moment, closes the catalyst of C phases between 16 and 33；
Enumerator disconnects the magnetic latching relay of C phases after 33 i.e. t4 ' moment, finishes.Its commutation process load electricity
Corrugating loads not power-off as shown in fig. 6, realize the seamless commutations of 0ms.
Claims (3)
1. novel seamless phase-change switch system, including ARM control module, switch module, detection module and GPRS communication modules,
The switch module, detection module are connected with ARM control modules by GPRS communication modules respectively, and the switch module includes connecting
Three identical switch module A, switch module B and switch module C being connected on A, B, C line of electrical network, the switch module A,
The other end of switch module B and switch module C is connected on the live wire of same load；The detection module is used to detect triple line
Electric current, voltage signal in road, it is characterised in that the switch module A, switch module B and switch module C include one respectively
After catalyst, a magnetic latching relay and a power diode, the power diode and magnetic latching relay series connection
It is in parallel with catalyst.
2. novel seamless phase-change switch system according to claim 1, it is characterised in that the detection module includes three
One end is connected between A, B, C three-phase of switch module A, switch module B, switch module C and electrical network, the other end is connected to
Hall voltage sensor on zero line, one is connected to the Hall current sensor between switch module and load.
3. novel seamless phase-change switch system according to claim 1, it is characterised in that the ARM control modules include
Signal receiving module, signal processing module, signal transmitting module and enumerator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621099513.3U CN206060218U (en) | 2016-09-30 | 2016-09-30 | Novel seamless phase-change switch system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621099513.3U CN206060218U (en) | 2016-09-30 | 2016-09-30 | Novel seamless phase-change switch system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230004A (en) * | 2016-09-30 | 2016-12-14 | 国网江苏省电力公司扬州供电公司 | A kind of novel seamless phase-change switch system and method for work thereof |
| CN110098627A (en) * | 2019-06-17 | 2019-08-06 | 重庆大全泰来电气有限公司 | A kind of commutation device, method, system and three-phase power balance method, system |
| WO2023001378A1 (en) * | 2021-07-22 | 2023-01-26 | Hitachi Energy Switzerland Ag | Hybrid phase selector |
-
2016
- 2016-09-30 CN CN201621099513.3U patent/CN206060218U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230004A (en) * | 2016-09-30 | 2016-12-14 | 国网江苏省电力公司扬州供电公司 | A kind of novel seamless phase-change switch system and method for work thereof |
| CN106230004B (en) * | 2016-09-30 | 2018-10-26 | 国网江苏省电力公司扬州供电公司 | A kind of working method of seamless phase-change switch system |
| CN110098627A (en) * | 2019-06-17 | 2019-08-06 | 重庆大全泰来电气有限公司 | A kind of commutation device, method, system and three-phase power balance method, system |
| WO2023001378A1 (en) * | 2021-07-22 | 2023-01-26 | Hitachi Energy Switzerland Ag | Hybrid phase selector |
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